clear() and remove() were added to FListView

ChangeLog

@@ -1,3 +1,8 @@
+2020-02-02  Markus Gans  <guru.mail@muenster.de>
+	* The methods clear() and remove() were added to FListView
+	* Add some const type qualifiers
+	* A small GNU autoconf-archive check
+
 2020-01-12  Markus Gans  <guru.mail@muenster.de>
 	* Add a "widget layout" chapter to the first steps document
 

configure.ac

@@ -13,6 +13,9 @@ AM_INIT_AUTOMAKE
 AC_PROG_CC
 AC_PROG_CXX
 
+m4_pattern_forbid([^AX_CHECK_COMPILE_FLAG\b],
+		  [Macro AX_CHECK_COMPILE_FLAG not found. Please install GNU autoconf-archive])
+
 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS( \

examples/7segment.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -200,14 +200,14 @@ void SegmentView::draw()
 
   for (auto&& ch : Input.getText().toUpper())
   {
-    FColorPair color(fc::LightRed, fc::Black);
+    const FColorPair color(fc::LightRed, fc::Black);
     get7Segment(ch);
 
     for (std::size_t i{0}; i < 3; i++)
       tbuffer[i] << color << line[i] << " ";
   }
 
-  std::size_t length = tbuffer[0].getLength();
+  const std::size_t length = tbuffer[0].getLength();
 
   if ( length < 36 )
     left_space << finalcut::FString(36 - length, ' ');

examples/background-color.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -189,8 +189,8 @@ void Background::cb_choice (finalcut::FWidget*, FDataPtr)
     return;
 
   uChar r{}, g{}, b{};
-  FDataPtr data_ptr = color_choice.getItemData();
+  const FDataPtr data_ptr = color_choice.getItemData();
-  RGB* rgb = reinterpret_cast<RGB*>(data_ptr);
+  const RGB* rgb = reinterpret_cast<RGB*>(data_ptr);
   std::tie(r, g, b) = *rgb;
   red.setValue(r);
   green.setValue(g);

examples/calculator.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -92,7 +92,7 @@ void Button::setChecked (bool enable)
 //----------------------------------------------------------------------
 void Button::onKeyPress (finalcut::FKeyEvent* ev)
 {
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   // catch the enter key
   if ( key == fc::Fkey_return || key == fc::Fkey_enter )
@@ -210,7 +210,7 @@ class Calc : public finalcut::FDialog
     void           clearInfixOperator();
     void           calcInfixOperator();
     void           adjustSize() override;
-    const wchar_t* getButtonText (std::size_t);
+    const wchar_t* getButtonText (const std::size_t);
     void           mapKeyFunctions();
 
     // Data members
@@ -257,9 +257,9 @@ Calc::Calc (FWidget* parent)
       btn->setGeometry(FPoint(30, 15), FSize(5, 3));
     else
     {
-      std::size_t n = ( key <= Three ) ? 0 : 1;
+      const std::size_t n = ( key <= Three ) ? 0 : 1;
-      int x = int(key + n) % 5 * 7 + 2;
+      const int x = int(key + n) % 5 * 7 + 2;
-      int y = int(key + n) / 5 * 2 + 3;
+      const int y = int(key + n) / 5 * 2 + 3;
       btn->setGeometry(FPoint(x, y), FSize(5, 1));
     }
 
@@ -338,17 +338,17 @@ void Calc::drawDispay()
 
   if ( isNewFont() )
   {
-    wchar_t bottom_line     {fc::NF_border_line_bottom};
+    const wchar_t bottom_line     {fc::NF_border_line_bottom};
-    wchar_t top_bottom_line {fc::NF_border_line_up_and_down};
+    const wchar_t top_bottom_line {fc::NF_border_line_up_and_down};
-    wchar_t top_line        {fc::NF_border_line_upper};
+    const wchar_t top_line        {fc::NF_border_line_upper};
-    wchar_t right_line      {fc::NF_rev_border_line_right};
+    const wchar_t right_line      {fc::NF_rev_border_line_right};
-    wchar_t left_line       {fc::NF_border_line_left};
+    const wchar_t left_line       {fc::NF_border_line_left};
     print() << FPoint(3, 2) << finalcut::FString(33, bottom_line);
     print() << FPoint(2, 3) << right_line;
     print() << FPoint(36, 3) << left_line;
     print() << FPoint(3, 4);
-    finalcut::FString top_bottom_line_5 (5, top_bottom_line);
+    const finalcut::FString top_bottom_line_5 (5, top_bottom_line);
-    finalcut::FString top_line_2 (2, top_line);
+    const finalcut::FString top_line_2 (2, top_line);
     print ( top_bottom_line_5 + top_line_2
           + top_bottom_line_5 + top_line_2
           + top_bottom_line_5 + top_line_2
@@ -357,9 +357,9 @@ void Calc::drawDispay()
   }
   else
   {
-    wchar_t vertical_and_right {fc::BoxDrawingsVerticalAndRight};
+    const wchar_t vertical_and_right {fc::BoxDrawingsVerticalAndRight};
-    wchar_t horizontal         {fc::BoxDrawingsHorizontal};
+    const wchar_t horizontal         {fc::BoxDrawingsHorizontal};
-    wchar_t vertical_and_left  {fc::BoxDrawingsVerticalAndLeft};
+    const wchar_t vertical_and_left  {fc::BoxDrawingsVerticalAndLeft};
     finalcut::FString separator ( finalcut::FString(vertical_and_right)
                                 + finalcut::FString(35, horizontal)
                                 + finalcut::FString(vertical_and_left) );
@@ -601,7 +601,7 @@ void Calc::pi (lDouble& x)
 //----------------------------------------------------------------------
 void Calc::open_bracket (lDouble&)
 {
-  stack_data d{ a, infix_operator };
+  const stack_data d{ a, infix_operator };
   bracket_stack.push(d);
   clearInfixOperator();
   input = "";
@@ -617,7 +617,7 @@ void Calc::close_bracket (lDouble&)
 
   calcInfixOperator();
   setDisplay(a);
-  stack_data d = bracket_stack.top();
+  const stack_data d = bracket_stack.top();
   bracket_stack.pop();
   b = d.term;
   infix_operator = d.infix_operator;
@@ -841,7 +841,7 @@ void Calc::draw()
 bool Calc::isDataEntryKey (int key)
 {
   // Test if key is in {'.', '0'..'9'}
-  int data_entry_keys[] =
+  const int data_entry_keys[] =
   {
     Decimal_point,
     Zero,
@@ -856,7 +856,7 @@ bool Calc::isDataEntryKey (int key)
     Nine
   };
 
-  int* iter = std::find (data_entry_keys, data_entry_keys + 11, key);
+  const int* iter = std::find (data_entry_keys, data_entry_keys + 11, key);
 
   if ( iter != data_entry_keys + 11 )
     return true;
@@ -868,7 +868,7 @@ bool Calc::isDataEntryKey (int key)
 bool Calc::isOperatorKey(int key)
 {
   // Test if key is in {'*', '/', '+', '-', '^', '='}
-  int operators[] =
+  const int operators[] =
   {
     Multiply,
     Divide,
@@ -878,7 +878,7 @@ bool Calc::isOperatorKey(int key)
     Equals
   };
 
-  int* iter = std::find (operators, operators + 6, key);
+  const int* iter = std::find (operators, operators + 6, key);
 
   if ( iter != operators + 6 )
     return true;
@@ -980,8 +980,8 @@ void Calc::calcInfixOperator()
 //----------------------------------------------------------------------
 void Calc::onKeyPress (finalcut::FKeyEvent* ev)
 {
-  std::size_t len = input.getLength();
+  const std::size_t len = input.getLength();
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -1040,7 +1040,7 @@ void Calc::onClose (finalcut::FCloseEvent* ev)
 void Calc::cb_buttonClicked (finalcut::FWidget*, FDataPtr data)
 {
   lDouble& x = getValue();
-  Calc::button key = *(static_cast<Calc::button*>(data));
+  const Calc::button key = *(static_cast<Calc::button*>(data));
 
   // Call the key function
   (this->*key_map[key])(x);
@@ -1071,15 +1071,15 @@ void Calc::cb_buttonClicked (finalcut::FWidget*, FDataPtr data)
 //----------------------------------------------------------------------
 void Calc::adjustSize()
 {
-  std::size_t pw = getDesktopWidth();
+  const std::size_t pw = getDesktopWidth();
-  std::size_t ph = getDesktopHeight();
+  const std::size_t ph = getDesktopHeight();
   setX (1 + int(pw - getWidth()) / 2, false);
   setY (1 + int(ph - getHeight()) / 2, false);
   finalcut::FDialog::adjustSize();
 }
 
 //----------------------------------------------------------------------
-const wchar_t* Calc::getButtonText (std::size_t key)
+const wchar_t* Calc::getButtonText (const std::size_t key)
 {
   static const wchar_t* const button_text[Calc::NUM_OF_BUTTONS] =
   {

examples/checklist.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -73,7 +73,7 @@ CheckList::CheckList (finalcut::FWidget* parent)
 {
   setText (L"Shopping list");
   setShadow();
-  std::size_t nf_offset = ( isNewFont() ) ? 1 : 0;
+  const std::size_t nf_offset = ( isNewFont() ) ? 1 : 0;
   setGeometry ( FPoint(int(1 + (parent->getWidth() - 28) / 2), 5)
               , FSize(28 + nf_offset, 13) );
   listView.ignorePadding();

examples/choice.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -106,10 +106,10 @@ int main (int argc, char* argv[])
     finalcut::FDialog dgl(&app);
     dgl.setModal();
     dgl.setText ("UNIX select");
-    std::size_t w{20};
+    const std::size_t w{20};
-    std::size_t h{13};
+    const std::size_t h{13};
-    int x = int(app.getDesktopWidth() - w) / 2;
+    const int x = int(app.getDesktopWidth() - w) / 2;
-    int y = int(app.getDesktopHeight() - h) / 2;
+    const int y = int(app.getDesktopHeight() - h) / 2;
     dgl.setGeometry (FPoint(x, y), FSize(w, h));
 
     // Create a button group

examples/keyboard.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -53,7 +53,7 @@ Keyboard::Keyboard (finalcut::FWidget* parent)
 //----------------------------------------------------------------------
 void Keyboard::onKeyPress (finalcut::FKeyEvent* ev)
 {
-  FKey key_id = ev->key();
+  const FKey key_id = ev->key();
   bool is_last_line{false};
 
   if ( getPrintPos().getY() == int(getDesktopHeight()) )

examples/listview.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -175,7 +175,7 @@ void Listview::populate()
 
   for (const auto& place : weather)
   {
-    finalcut::FStringList line (&place[0], &place[0] + 5);
+    const finalcut::FStringList line (&place[0], &place[0] + 5);
     listView.insert (line);
   }
 }

examples/mandelbrot.cpp

@@ -67,23 +67,23 @@ void Mandelbrot::draw()
 {
   finalcut::FDialog::draw();
 
-  double x_min{-2.20};
+  const double x_min{-2.20};
-  double x_max{+1.00};
+  const double x_max{+1.00};
-  double y_min{-1.05};
+  const double y_min{-1.05};
-  double y_max{+1.05};
+  const double y_max{+1.05};
-  int max_iter{99};
+  const int max_iter{99};
 
-  int xoffset{2};
+  const int xoffset{2};
-  int yoffset{2};
+  const int yoffset{2};
+  const int Cols = int(getClientWidth());
+  const int Lines = int(getClientHeight());
   int current_line{0};
-  int Cols = int(getClientWidth());
-  int Lines = int(getClientHeight());
 
   if ( Cols < 2 || Lines < 2 )
     return;
 
-  double dX = (x_max - x_min) / (Cols - 1);
+  const double dX = (x_max - x_min) / (Cols - 1);
-  double dY = (y_max - y_min) / Lines;
+  const double dY = (y_max - y_min) / Lines;
 
   for (double y0 = y_min; y0 < y_max && current_line < Lines; y0 += dY)
   {
@@ -98,7 +98,7 @@ void Mandelbrot::draw()
 
       while ( x * x + y * y < 4 && iter < max_iter )
       {
-        double xtemp = x * x - y * y + x0;
+        const double xtemp = x * x - y * y + x0;
         y = 2 * x * y + y0;
         x = xtemp;
         iter++;
@@ -138,8 +138,8 @@ void Mandelbrot::onClose (finalcut::FCloseEvent* ev)
 //----------------------------------------------------------------------
 void Mandelbrot::adjustSize()
 {
-  std::size_t h = getDesktopHeight() - 1;
+  const std::size_t h = getDesktopHeight() - 1;
-  std::size_t w = getDesktopWidth() - 10;
+  const std::size_t w = getDesktopWidth() - 10;
   setGeometry(FPoint(6, 1), FSize(w, h), false);
   finalcut::FDialog::adjustSize();
 }

examples/menu.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -288,8 +288,8 @@ void Menu::defaultCallback (finalcut::FMenuList* mb)
 //----------------------------------------------------------------------
 void Menu::adjustSize()
 {
-  int pw = int(getDesktopWidth());
+  const int pw = int(getDesktopWidth());
-  int ph = int(getDesktopHeight());
+  const int ph = int(getDesktopHeight());
   setX (1 + (pw - int(getWidth())) / 2, false);
   setY (1 + (ph - int(getHeight())) / 4, false);
   finalcut::FDialog::adjustSize();
@@ -304,7 +304,7 @@ void Menu::onClose (finalcut::FCloseEvent* ev)
 //----------------------------------------------------------------------
 void Menu::cb_message (finalcut::FWidget* widget, FDataPtr)
 {
-  auto menuitem = static_cast<finalcut::FMenuItem*>(widget);
+  const auto& menuitem = static_cast<finalcut::FMenuItem*>(widget);
   auto text = menuitem->getText();
   text = text.replace('&', "");
   finalcut::FMessageBox::info ( this

examples/mouse.cpp

@@ -76,8 +76,8 @@ ColorChooser::ColorChooser (finalcut::FWidget* parent)
 
   if ( parent )
   {
-    FColor fg = parent->getForegroundColor();
+    const FColor fg = parent->getForegroundColor();
-    FColor bg = parent->getBackgroundColor();
+    const FColor bg = parent->getBackgroundColor();
     setForegroundColor(fg);
     setBackgroundColor(bg);
     headline.setForegroundColor(fg);
@@ -98,17 +98,17 @@ ColorChooser::~ColorChooser()
 //----------------------------------------------------------------------
 void ColorChooser::onMouseDown (finalcut::FMouseEvent* ev)
 {
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( ev->getButton() == fc::MiddleButton )
     return;
 
   for (int c{0}; c < 16; c++)
   {
-    int xmin = 2 + (c / 8) * 3;
+    const int xmin = 2 + (c / 8) * 3;
-    int xmax = 4 + (c / 8) * 3;
+    const int xmax = 4 + (c / 8) * 3;
-    int y = 3 + c % 8;
+    const int y = 3 + c % 8;
 
     if ( mouse_x >= xmin && mouse_x <= xmax && mouse_y == y )
     {
@@ -219,8 +219,8 @@ Brushes::Brushes (finalcut::FWidget* parent)
 
   if ( parent )
   {
-    FColor fg = parent->getForegroundColor();
+    const FColor fg = parent->getForegroundColor();
-    FColor bg = parent->getBackgroundColor();
+    const FColor bg = parent->getBackgroundColor();
     setForegroundColor(fg);
     setBackgroundColor(bg);
     headline.setForegroundColor(fg);
@@ -267,8 +267,8 @@ void Brushes::drawBorder()
 //----------------------------------------------------------------------
 void Brushes::onMouseDown (finalcut::FMouseEvent* ev)
 {
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( ev->getButton() != fc::LeftButton )
     return;
@@ -381,12 +381,12 @@ MouseDraw::~MouseDraw()
 void MouseDraw::setGeometry ( const FPoint& p, const FSize& s, bool adjust)
 {
   finalcut::FDialog::setGeometry (p, s, adjust);
-  std::size_t w = s.getWidth();
+  const std::size_t w = s.getWidth();
-  std::size_t h = s.getHeight();
+  const std::size_t h = s.getHeight();
-  finalcut::FRect scroll_geometry (FPoint(0, 0), FSize(w - 11, h - 3));
+  const finalcut::FRect scroll_geometry (FPoint(0, 0), FSize(w - 11, h - 3));
-  FSize no_shadow(0, 0);
+  const FSize no_shadow(0, 0);
-  int old_w = canvas->width;
+  const int old_w = canvas->width;
-  int old_h = canvas->height;
+  const int old_h = canvas->height;
   resizeArea (scroll_geometry, no_shadow, canvas);
 
   if ( old_w != canvas->width || old_h != canvas->height )
@@ -420,7 +420,7 @@ void MouseDraw::onClose (finalcut::FCloseEvent* ev)
 //----------------------------------------------------------------------
 void MouseDraw::draw()
 {
-  int y_max = int(getHeight());
+  const int y_max = int(getHeight());
   finalcut::FDialog::draw();
   setColor();
 
@@ -455,8 +455,8 @@ void MouseDraw::draw()
 //----------------------------------------------------------------------
 void MouseDraw::drawBrush (int x, int y, bool swap_color)
 {
-  int Cols = int(getWidth());
+  const int Cols = int(getWidth());
-  int Lines = int(getHeight());
+  const int Lines = int(getHeight());
 
   if ( x > 10 && x < Cols && y > 2 && y < Lines )
   {
@@ -485,11 +485,11 @@ void MouseDraw::drawCanvas()
     return;
 
   auto printarea = getCurrentPrintArea();
-  int ax = 9 + getTermX() - printarea->offset_left
+  const int ax = 9 + getTermX() - printarea->offset_left;
-    , ay = 1 + getTermY() - printarea->offset_top
+  const int ay = 1 + getTermY() - printarea->offset_top;
-    , y_end = canvas->height
+  const int y_end = canvas->height;
-    , x_end = canvas->width
+  const int x_end = canvas->width;
-    , w_line_len = printarea->width + printarea->right_shadow;
+  const int w_line_len = printarea->width + printarea->right_shadow;
 
   for (int y{0}; y < y_end; y++)  // line loop
   {
@@ -514,9 +514,9 @@ void MouseDraw::drawCanvas()
 //----------------------------------------------------------------------
 void MouseDraw::adjustSize()
 {
-  std::size_t w{60}, h{18};
+  const std::size_t w{60}, h{18};
-  int x = 1 + int((getParentWidget()->getWidth() - w) / 2);
+  const int x = 1 + int((getParentWidget()->getWidth() - w) / 2);
-  int y = 1 + int((getParentWidget()->getHeight() - h) / 2);
+  const int y = 1 + int((getParentWidget()->getHeight() - h) / 2);
   setGeometry (FPoint(x, y), FSize(w, h), false);
   finalcut::FDialog::adjustSize();
 }

examples/opti-move.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -64,8 +64,8 @@ bool keyPressed()
 void term_boundaries (int& x, int& y)
 {
   // checks and corrects the terminal boundaries
-  int term_width  = int(app->getDesktopWidth());
+  const int term_width  = int(app->getDesktopWidth());
-  int term_height = int(app->getDesktopHeight());
+  const int term_height = int(app->getDesktopHeight());
 
   if ( x < 0 )
     x = 0;
@@ -115,7 +115,7 @@ void move (int xold, int yold, int xnew, int ynew)
 
   from.sprintf ("(%3d;%3d)", xold, yold);
   to.sprintf ("(%3d;%3d)", xnew, ynew);
-  std::size_t len = buffer.getLength();
+  const std::size_t len = buffer.getLength();
 
   if ( len <= 1 )
     byte.sprintf ("%d byte ", len);

examples/scrollview.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -118,8 +118,8 @@ Scrollview::~Scrollview()
 void Scrollview::setScrollSize (const FSize& size)
 {
   FScrollView::setScrollSize (size);
-  int width = int(size.getWidth());
+  const int width = int(size.getWidth());
-  int height = int(size.getHeight());
+  const int height = int(size.getHeight());
   go_south.setPos (FPoint(width - 5, 1));
   go_west.setPos (FPoint(width - 5, height - 1));
   go_north.setPos (FPoint(1, height - 1));

examples/term-attributes.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -122,7 +122,7 @@ void AttribDlg::onKeyPress (finalcut::FKeyEvent* ev)
 //----------------------------------------------------------------------
 void AttribDlg::onWheel (finalcut::FWheelEvent* ev)
 {
-  int wheel = ev->getWheel();
+  const int wheel = ev->getWheel();
 
   if ( wheel == fc::WheelUp )
     cb_next();
@@ -251,7 +251,7 @@ AttribDemo::AttribDemo (finalcut::FWidget* parent)
 //----------------------------------------------------------------------
 void AttribDemo::printColorLine()
 {
-  auto parent = static_cast<AttribDlg*>(getParent());
+  const auto& parent = static_cast<AttribDlg*>(getParent());
 
   for (FColor color{0}; color < last_color; color++)
   {
@@ -263,7 +263,7 @@ void AttribDemo::printColorLine()
 void AttribDemo::printAltCharset()
 {
   const auto& wc = getFWidgetColors();
-  auto parent = static_cast<AttribDlg*>(getParent());
+  const auto& parent = static_cast<AttribDlg*>(getParent());
 
   if ( ! isMonochron() )
     setColor (wc.label_fg, wc.label_bg);
@@ -416,7 +416,7 @@ void AttribDemo::draw()
   const auto& wc = getFWidgetColors();
   printAltCharset();
 
-  std::vector<std::function<void()> > effect
+  const std::vector<std::function<void()> > effect
   {
     [&] { printDim(); },
     [&] { printNormal(); },
@@ -448,7 +448,7 @@ void AttribDemo::draw()
     setColor(wc.label_fg, wc.label_bg);
 
   print() << FPoint(1, 15);
-  FColor bg = static_cast<AttribDlg*>(getParent())->bgcolor;
+  const FColor bg = static_cast<AttribDlg*>(getParent())->bgcolor;
   print (" Background color:");
 
   if ( bg == fc::Default )

examples/termcap.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -174,11 +174,11 @@ void tcapString (const std::string& name, const char cap_str[])
     return;
   }
 
-  uInt len = uInt(std::strlen(cap_str));
+  const uInt len = uInt(std::strlen(cap_str));
 
   for (uInt i{0}; i < len; i++)
   {
-    uChar c = uChar(cap_str[i]);
+    const uChar c = uChar(cap_str[i]);
 
     if ( c > 127 )
     {
@@ -209,7 +209,7 @@ void tcapString (const std::string& name, const char cap_str[])
 #if DEBUG
 void debug (finalcut::FApplication& TermApp)
 {
-  auto& fterm = TermApp.getFTerm();
+  const auto& fterm = TermApp.getFTerm();
   auto& debug_data = fterm.getFTermDebugData();
   const finalcut::FString& ab_s = debug_data.getAnswerbackString();
   const finalcut::FString& sec_da = debug_data.getSecDAString();
@@ -278,7 +278,7 @@ void numeric()
 void string()
 {
   std::cout << "\r\n[String]\r\n";
-  finalcut::FTermcap::tcap_map (&tcap_strings)[] \
+  const finalcut::FTermcap::tcap_map (&tcap_strings)[] \
       = finalcut::FTermcap::strings;
 
   for (const auto& entry : data::strings)
@@ -294,7 +294,7 @@ void string()
 //----------------------------------------------------------------------
 int main (int argc, char* argv[])
 {
-  bool disable_alt_screen{true};
+  const bool disable_alt_screen{true};
   finalcut::FApplication TermApp (argc, argv, disable_alt_screen);
 
   std::cout << "--------\r\nFTermcap\r\n--------\r\n\n";

examples/timer.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -49,7 +49,7 @@ Timer::Timer (finalcut::FWidget* parent)
   : finalcut::FWidget(parent)
 {
   addTimer (60000);              // 1-minute timer
-  int id = addTimer (50);  // 50-millisecond timer
+  const int id = addTimer (50);  // 50-millisecond timer
   addTimer (1000);               // 1-second timer
   delTimer (id);
   addTimer (250);                // 250-millisecond timer
@@ -72,7 +72,7 @@ void Timer::draw()
 void Timer::onTimer (finalcut::FTimerEvent* ev)
 {
   bool is_last_line{false};
-  int timer_id = ev->getTimerId();
+  const int timer_id = ev->getTimerId();
 
   if ( getPrintPos().getY() == int(getDesktopHeight()) )
     is_last_line = true;

examples/transparent.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -105,7 +105,7 @@ void Transparent::draw()
   else
     setTransparent();
 
-  finalcut::FString line(getClientWidth(), '.');
+  const finalcut::FString line(getClientWidth(), '.');
 
   for (int n{1}; n <= int(getClientHeight()); n++)
   {

examples/treeview.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -338,7 +338,7 @@ Treeview::Treeview (finalcut::FWidget* parent)
     TreeItem* country_list = continent.child_element;
     finalcut::FStringList continent_line ( continent.begin()
                                          , continent.end() );
-    const auto& iter = listView.insert (continent_line);
+    auto iter = listView.insert (continent_line);
 
     while ( country_list && country_list->name )
     {

examples/ui.cpp

@@ -738,7 +738,7 @@ void MyDialog::initWidgetsCallbacks()
 //----------------------------------------------------------------------
 void MyDialog::adjustSize()
 {
-  auto h = getParentWidget()->getHeight() - 4;
+  const auto h = getParentWidget()->getHeight() - 4;
   setHeight (h, false);
   int X = int((getDesktopWidth() - getWidth()) / 2);
 
@@ -788,8 +788,8 @@ void MyDialog::cb_about (finalcut::FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void MyDialog::cb_terminfo (finalcut::FWidget*, FDataPtr)
 {
-  auto x = getDesktopWidth();
+  const auto x = getDesktopWidth();
-  auto y = getDesktopHeight();
+  const auto y = getDesktopHeight();
   finalcut::FMessageBox info1 \
   (
     "Environment"
@@ -918,7 +918,7 @@ void MyDialog::cb_updateNumber (finalcut::FWidget* widget, FDataPtr data)
 {
   auto& list = *(static_cast<finalcut::FListBox*>(widget));
   auto& num = *(static_cast<finalcut::FLabel*>(data));
-  const auto& count = list.getCount();
+  const auto count = list.getCount();
   int select_num = 0;
 
   for (std::size_t n{1}; n <= count; n++)
@@ -948,7 +948,7 @@ void MyDialog::cb_activateButton (finalcut::FWidget* widget, FDataPtr data)
 void MyDialog::cb_view (finalcut::FWidget*, FDataPtr data)
 {
   finalcut::FString file;
-  auto item = static_cast<finalcut::FMenuItem*>(data);
+  const auto& item = static_cast<finalcut::FMenuItem*>(data);
 
   if ( item && ! item->getText().isEmpty() )
     file = item->getText();

examples/watch.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -76,7 +76,7 @@ Watch::Watch (FWidget* parent)
   : finalcut::FDialog(parent)
 {
   setText ("Watch");
-  int pw = int(getParentWidget()->getWidth());
+  const int pw = int(getParentWidget()->getWidth());
   setGeometry (FPoint(1 + (pw - 22) / 2, 3), FSize(22, 13));
 
   // Labels
@@ -126,7 +126,7 @@ void Watch::printTime()
   finalcut::FString str{};
   std::tm now{};
 
-  std::time_t t = std::time(0);  // get current time
+  const std::time_t t = std::time(0);  // get current time
   localtime_r(&t, &now);
 
   if ( sec )
@@ -190,7 +190,7 @@ void Watch::cb_seconds (finalcut::FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void Watch::adjustSize()
 {
-  int pw = int(getParentWidget()->getWidth());
+  const int pw = int(getParentWidget()->getWidth());
   setX (1 + (pw - 22) / 2, false);
   finalcut::FDialog::adjustSize();
 }

examples/windows.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -69,9 +69,8 @@ SmallWindow::SmallWindow (finalcut::FWidget* parent)
   : finalcut::FDialog(parent)
 {
   const auto& wc = getFWidgetColors();
-  wchar_t arrow_up, arrow_down;
+  const wchar_t arrow_up = fc::BlackUpPointingTriangle;
-  arrow_up = fc::BlackUpPointingTriangle;
+  const wchar_t arrow_down = fc::BlackDownPointingTriangle;
-  arrow_down = fc::BlackDownPointingTriangle;
 
   left_arrow = arrow_up;
   left_arrow.setForegroundColor (wc.label_inactive_fg);
@@ -330,7 +329,7 @@ void Window::activateWindow (finalcut::FDialog* win)
   if ( ! win || win->isWindowHidden() || win->isWindowActive() )
     return;
 
-  bool has_raised = finalcut::FWindow::raiseWindow(win);
+  const bool has_raised = finalcut::FWindow::raiseWindow(win);
   win->activateDialog();
 
   if ( has_raised )
@@ -342,27 +341,27 @@ void Window::activateWindow (finalcut::FDialog* win)
 //----------------------------------------------------------------------
 void Window::adjustSize()
 {
-  std::size_t w = getDesktopWidth();
+  const std::size_t w = getDesktopWidth();
-  std::size_t h = getDesktopHeight();
+  const std::size_t h = getDesktopHeight();
-  int X = int(1 + (w - 40) / 2);
+  const int X = int(1 + (w - 40) / 2);
   int Y = int(1 + (h - 22) / 2);
-  int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
+  const int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
-  int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
+  const int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
 
   if ( Y < 2 )
     Y = 2;
 
   setPos (FPoint(X, Y));
-  auto first = windows.begin();
+  const auto& first = windows.begin();
   auto iter = first;
 
   while ( iter != windows.end() )
   {
     if ( (*iter)->is_open )
     {
-      int n = int(std::distance(first, iter));
+      const int n = int(std::distance(first, iter));
-      int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
+      const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
-      int y = dy + 11 + int(n / 3) * 3;
+      const int y = dy + 11 + int(n / 3) * 3;
       (*iter)->dgl->setPos (FPoint(x, y));
     }
 
@@ -409,12 +408,12 @@ void Window::onClose (finalcut::FCloseEvent* ev)
 //----------------------------------------------------------------------
 void Window::cb_createWindows (finalcut::FWidget*, FDataPtr)
 {
-  auto first = windows.begin();
+  const auto& first = windows.begin();
   auto iter = first;
-  auto w = getRootWidget()->getWidth();
+  const auto w = getRootWidget()->getWidth();
-  auto h = getRootWidget()->getHeight();
+  const auto h = getRootWidget()->getHeight();
-  int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
+  const int dx = ( w > 80 ) ? int(w - 80) / 2 : 0;
-  int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
+  const int dy = ( h > 24 ) ? int(h - 24) / 2 : 0;
 
   while ( iter != windows.end() )
   {
@@ -425,9 +424,9 @@ void Window::cb_createWindows (finalcut::FWidget*, FDataPtr)
       win_dat->dgl = win;
       win_dat->is_open = true;
       win->setText(win_dat->title);
-      int n = int(std::distance(first, iter))
+      const int n = int(std::distance(first, iter));
-        , x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3
+      const int x = dx + 5 + (n % 3) * 25 + int(n / 3) * 3;
-        , y = dy + 11 + int(n / 3) * 3;
+      const int y = dy + 11 + int(n / 3) * 3;
       win->setGeometry (FPoint(x, y), FSize(20, 8));
       win->setMinimumSize (FSize(20, 8));
       win->setResizeable();
@@ -454,7 +453,7 @@ void Window::cb_closeWindows (finalcut::FWidget*, FDataPtr)
     return;
 
   auto iter = getDialogList()->end();
-  auto first = getDialogList()->begin();
+  const auto& first = getDialogList()->begin();
   activateWindow(this);
 
   do

src/fapplication.cpp

@@ -140,7 +140,7 @@ int FApplication::enterLoop()  // event loop
   loop_level++;
   quit_now = false;
 
-  bool old_app_exit_loop = app_exit_loop;
+  const bool old_app_exit_loop = app_exit_loop;
   app_exit_loop = false;
 
   while ( ! (quit_now || app_exit_loop) )
@@ -350,7 +350,7 @@ void FApplication::showParameterUsage()
 //----------------------------------------------------------------------
 void FApplication::closeConfirmationDialog (FWidget* w, FCloseEvent* ev)
 {
-  int ret = FMessageBox::info ( w, "Quit"
+  const int ret = FMessageBox::info ( w, "Quit"
                                     , "Do you really want\n"
                                       "to quit the program ?"
                                     , FMessageBox::Yes
@@ -435,7 +435,7 @@ void FApplication::cmd_options (const int& argc, char* argv[])
 
     opterr = 0;
     int idx{0};
-    int c = getopt_long (argc, argv, "", long_options, &idx);
+    const int c = getopt_long (argc, argv, "", long_options, &idx);
 
     if ( c == -1 )
       break;
@@ -597,8 +597,8 @@ inline void FApplication::performKeyboardAction()
       break;
 
     default:
-      bool acceptKeyDown = sendKeyDownEvent (keyboard_widget);
+      const bool acceptKeyDown = sendKeyDownEvent (keyboard_widget);
-      bool acceptKeyPress = sendKeyPressEvent (keyboard_widget);
+      const bool acceptKeyPress = sendKeyPressEvent (keyboard_widget);
 
       if ( ! (acceptKeyDown || acceptKeyPress) )
         sendKeyboardAccelerator();
@@ -693,9 +693,9 @@ bool FApplication::processDialogSwitchAccelerator()
   if ( keyboard->getKey() >= fc::Fmkey_1
     && keyboard->getKey() <= fc::Fmkey_9 )
   {
-    FKey key = keyboard->getKey();
+    const FKey key = keyboard->getKey();
-    std::size_t n = key - fc::Fmkey_0;
+    const std::size_t n = key - fc::Fmkey_0;
-    std::size_t s = getDialogList()->size();
+    const std::size_t s = getDialogList()->size();
 
     if ( s > 0 && s >= n )
     {
@@ -727,7 +727,7 @@ bool FApplication::processAccelerator (const FWidget*& widget)
     && ! widget->getAcceleratorList().empty() )
   {
     auto iter = widget->getAcceleratorList().begin();
-    auto last = widget->getAcceleratorList().end();
+    const auto& last = widget->getAcceleratorList().end();
 
     while ( iter != last )
     {
@@ -791,7 +791,7 @@ FWidget*& FApplication::determineClickedWidget()
     && ! mouse->isWheelDown() )
     return clicked;
 
-  const auto& mouse_position = mouse->getPos();
+  auto mouse_position = mouse->getPos();
 
   // Determine the window object on the current click position
   auto window = FWindow::getWindowWidgetAt (mouse_position);
@@ -830,7 +830,7 @@ void FApplication::closeDropDown()
   if ( ! mouse || mouse->isMoved() )
     return;
 
-  const auto& mouse_position = mouse->getPos();
+  auto mouse_position = mouse->getPos();
   finalcut::closeDropDown (this, mouse_position);
 }
 
@@ -839,7 +839,7 @@ void FApplication::unselectMenubarItems()
 {
   // Unselect the menu bar items
 
-  auto openmenu = FWidget::getOpenMenu();
+  const auto& openmenu = FWidget::getOpenMenu();
   auto menu_bar = FWidget::getMenuBar();
 
   if ( openmenu || (mouse && mouse->isMoved()) )
@@ -890,7 +890,7 @@ void FApplication::sendMouseEvent()
   if ( mouse->isMetaKeyPressed() )
     key_state |= fc::MetaButton;
 
-  auto widgetMousePos = clicked->termToWidgetPos(mouse_position);
+  const auto& widgetMousePos = clicked->termToWidgetPos(mouse_position);
 
   if ( mouse->isMoved() )
   {

src/fbutton.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -217,15 +217,15 @@ void FButton::hide()
   }
   else
   {
-    const auto& wc = getFWidgetColors();
+    auto wc = getFWidgetColors();
     fg = wc.dialog_fg;
     bg = wc.dialog_bg;
   }
 
   setColor (fg, bg);
-  std::size_t s = hasShadow() ? 1 : 0;
+  const std::size_t s = hasShadow() ? 1 : 0;
-  std::size_t f = isFlat() ? 1 : 0;
+  const std::size_t f = isFlat() ? 1 : 0;
-  std::size_t size = getWidth() + s + (f << 1);
+  const std::size_t size = getWidth() + s + (f << 1);
 
   if ( size == 0 )
     return;
@@ -243,7 +243,7 @@ void FButton::onKeyPress (FKeyEvent* ev)
   if ( ! isEnabled() )
     return;
 
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -285,7 +285,7 @@ void FButton::onMouseDown (FMouseEvent* ev)
       getStatusBar()->drawMessage();
   }
 
-  FPoint tPos(ev->getTermPos());
+  const FPoint tPos(ev->getTermPos());
 
   if ( getTermGeometry().contains(tPos) )
     setDown();
@@ -312,7 +312,7 @@ void FButton::onMouseMove (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton )
     return;
 
-  FPoint tPos(ev->getTermPos());
+  const FPoint tPos(ev->getTermPos());
 
   if ( click_animation )
   {
@@ -575,7 +575,7 @@ inline void FButton::drawButtonTextLine (const FString& button_text)
       print (button_text[z]);
     }
 
-    auto char_width = getColumnWidth (button_text[z]);
+    const auto char_width = getColumnWidth (button_text[z]);
     columns += char_width;
     pos += char_width;
   }
@@ -597,7 +597,7 @@ inline void FButton::drawButtonTextLine (const FString& button_text)
 void FButton::draw()
 {
   FString button_text{};
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
   column_width = getColumnWidth(text);
   space_char = int(' ');
   active_focus = getFlags().active && getFlags().focus;

src/fbuttongroup.cpp

@@ -4,7 +4,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -129,7 +129,7 @@ void FButtonGroup::setText (const FString& txt)
 //----------------------------------------------------------------------
 bool FButtonGroup::isChecked (int index) const
 {
-  auto button = getButton(index);
+  const auto& button = getButton(index);
 
   if ( button )
     return button->isChecked();
@@ -145,7 +145,7 @@ bool FButtonGroup::hasFocusedButton() const
 
   for (auto&& item : buttonlist)
   {
-    auto toggle_button = static_cast<FToggleButton*>(item);
+    const auto& toggle_button = static_cast<FToggleButton*>(item);
 
     if ( toggle_button->hasFocus() )
       return true;
@@ -162,7 +162,7 @@ bool FButtonGroup::hasCheckedButton() const
 
   for (auto&& item : buttonlist)
   {
-    auto toggle_button = static_cast<FToggleButton*>(item);
+    const auto& toggle_button = static_cast<FToggleButton*>(item);
 
     if ( toggle_button->isChecked() )
       return true;
@@ -176,7 +176,7 @@ void FButtonGroup::hide()
 {
   FColor fg{}, bg{};
   FWidget::hide();
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
 
   if ( ! buttonlist.empty() )
   {
@@ -201,7 +201,7 @@ void FButtonGroup::hide()
   }
 
   setColor (fg, bg);
-  std::size_t size = getWidth();
+  const std::size_t size = getWidth();
 
   if ( size == 0 )
     return;
@@ -253,7 +253,7 @@ void FButtonGroup::remove (FToggleButton* button)
 
   while ( iter != buttonlist.end() )
   {
-    auto toggle_button = static_cast<FToggleButton*>(*iter);
+    const auto& toggle_button = static_cast<FToggleButton*>(*iter);
 
     if ( toggle_button == button )
     {
@@ -280,11 +280,11 @@ void FButtonGroup::checkScrollSize (const FRect& r)
 {
   // Check and adjust the scroll size
 
-  FRect scrollgeometry (1, 1, getScrollWidth(), getScrollHeight());
+  const FRect scrollgeometry (1, 1, getScrollWidth(), getScrollHeight());
 
   if ( ! scrollgeometry.contains(r) )
   {
-    FRect r_combined (scrollgeometry.combined(r));
+    const FRect r_combined (scrollgeometry.combined(r));
     setScrollSize (r_combined.getSize());
   }
 }
@@ -399,9 +399,9 @@ void FButtonGroup::drawLabel()
     return;
 
   FString label_text{};
-  FString txt{" " + text + " "};
+  const FString txt{" " + text + " "};
   unsetViewportPrint();
-  auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
+  const auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
 
   if ( hasBorder() )
     FWidget::setPrintPos (FPoint(2, 1));
@@ -438,14 +438,14 @@ void FButtonGroup::drawText ( const FString& label_text
                             , std::size_t hotkeypos )
 {
   const auto& wc = getFWidgetColors();
-  std::size_t column_width = getColumnWidth(label_text);
+  const std::size_t column_width = getColumnWidth(label_text);
   std::size_t length = label_text.getLength();
   bool ellipsis{false};
 
   if ( column_width > getClientWidth() )
   {
-    std::size_t len = getClientWidth() - 3;
+    const std::size_t len = getClientWidth() - 3;
-    FString s = finalcut::getColumnSubString (label_text, 1, len);
+    const FString s = finalcut::getColumnSubString (label_text, 1, len);
     length = s.getLength();
     ellipsis = true;
   }
@@ -546,7 +546,7 @@ void FButtonGroup::directFocus()
 //----------------------------------------------------------------------
 void FButtonGroup::cb_buttonToggled (FWidget* widget, FDataPtr)
 {
-  auto button = static_cast<FToggleButton*>(widget);
+  const auto& button = static_cast<FToggleButton*>(widget);
 
   if ( ! button->isChecked() )
     return;

src/fcombobox.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -51,14 +51,14 @@ FDropDownListBox::FDropDownListBox (FWidget* parent)
 //----------------------------------------------------------------------
 FDropDownListBox::~FDropDownListBox()  // destructor
 {
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
 
   if ( fapp->isQuit() )
     return;
 
   FWindow* parent_win{nullptr};
 
-  if ( auto parent = getParentWidget() )
+  if ( const auto& parent = getParentWidget() )
     parent_win = getWindowWidget(parent);
 
   if ( parent_win )
@@ -294,7 +294,7 @@ void FComboBox::remove (std::size_t item)
 
   if ( ! list_window.isEmpty() )
   {
-    std::size_t index = list_window.list.currentItem();
+    const std::size_t index = list_window.list.currentItem();
     input_field = list_window.list.getItem(index).getText();
     input_field.redraw();
   }
@@ -329,12 +329,8 @@ void FComboBox::showDropDown()
   FPoint p(getTermPos());
   p.move(0 - int(nf), 1);
   setClickedWidget(&list_window.list);
-  std::size_t w = getWidth();
+  const std::size_t w = getWidth();
-  std::size_t h = getCount();
+  const std::size_t h = ( getCount() <= max_items ) ? getCount() : max_items;
-
-  if ( h > max_items)
-    h = max_items;
-
   list_window.setGeometry(p, FSize(w + std::size_t(nf), h + border));
   list_window.show();
   list_window.list.setFocus();
@@ -418,8 +414,8 @@ void FComboBox::onMouseDown (FMouseEvent* ev)
       getStatusBar()->drawMessage();
   }
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x >= int(getWidth()) - nf
     && mouse_x <= int(getWidth()) && mouse_y == 1 )
@@ -481,7 +477,7 @@ bool FComboBox::isMouseOverListWindow (const FPoint& termpos)
 {
   if ( list_window.isShown() )
   {
-    const auto& list_geometry = list_window.getTermGeometry();
+    auto list_geometry = list_window.getTermGeometry();
 
     if ( list_geometry.contains(termpos) )
       return true;
@@ -494,7 +490,7 @@ bool FComboBox::isMouseOverListWindow (const FPoint& termpos)
 void FComboBox::init()
 {
   setShadow();
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
   FLabel* label = input_field.getLabelObject();
   label->setParent(getParent());
   label->setForegroundColor (parent_widget->getForegroundColor());
@@ -544,7 +540,7 @@ void FComboBox::draw()
 {
   const auto& wc = getFWidgetColors();
 
-  FColorPair button_color = [&] () -> FColorPair
+  const FColorPair button_color = [&] () -> FColorPair
   {
     if ( list_window.isEmpty() )
       return FColorPair ( wc.scrollbar_button_inactive_fg
@@ -605,7 +601,7 @@ void FComboBox::passEventToListWindow (FMouseEvent*& ev)
 
   const auto& t = ev->getTermPos();
   const auto& p = list_window.list.termToWidgetPos(t);
-  int b = ev->getButton();
+  const int b = ev->getButton();
 
   try
   {
@@ -637,7 +633,7 @@ void FComboBox::processChanged()
 void FComboBox::cb_setInputField (FWidget*, FDataPtr)
 {
   auto& list = list_window.list;
-  std::size_t index = list.currentItem();
+  const std::size_t index = list.currentItem();
   input_field = list.getItem(index).getText();
   input_field.redraw();
   processChanged();
@@ -653,7 +649,7 @@ void FComboBox::cb_closeComboBox (FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void FComboBox::cb_inputFieldSwitch (FWidget*, FDataPtr)
 {
-  auto mouse = getFMouseControl();
+  const auto& mouse = getFMouseControl();
 
   if ( mouse && ! mouse->isLeftButtonPressed() )
     return;
@@ -685,14 +681,14 @@ void FComboBox::cb_inputFieldSwitch (FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void FComboBox::cb_inputFieldHandOver (FWidget*, FDataPtr)
 {
-  auto mouse = getFMouseControl();
+  const auto& mouse = getFMouseControl();
 
   if ( ! mouse || list_window.isHidden() )
     return;
 
   const auto& t = mouse->getPos();
-  auto p = list_window.list.termToWidgetPos(t);
+  const auto& p = list_window.list.termToWidgetPos(t);
-  int b = ( mouse->isLeftButtonPressed() ) ? fc::LeftButton : 0;
+  const int b = ( mouse->isLeftButtonPressed() ) ? fc::LeftButton : 0;
 
   try
   {

src/fdialog.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -57,8 +57,8 @@ FDialog::FDialog (const FString& txt, FWidget* parent)
 //----------------------------------------------------------------------
 FDialog::~FDialog()  // destructor
 {
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
-  bool is_quit = fapp->isQuit();
+  const bool is_quit = fapp->isQuit();
   delete dialog_menu;
   dgl_menuitem = nullptr;
 
@@ -176,14 +176,14 @@ void FDialog::setPos (const FPoint& pos, bool)
     return;
   }
 
-  int dx = getX() - pos.getX();
+  const int dx = getX() - pos.getX();
-  int dy = getY() - pos.getY();
+  const int dy = getY() - pos.getY();
-  int old_x = getTermX();
+  const int old_x = getTermX();
-  int old_y = getTermY();
+  const int old_y = getTermY();
   const auto& shadow = getShadow();
-  std::size_t width = getWidth() + shadow.getWidth();  // width + right shadow
+  const std::size_t width = getWidth() + shadow.getWidth();  // width + right shadow
-  std::size_t height = getHeight() + shadow.getHeight();  // height + bottom shadow
+  const std::size_t height = getHeight() + shadow.getHeight();  // height + bottom shadow
-  FRect old_geometry (getTermGeometryWithShadow());
+  const FRect old_geometry (getTermGeometryWithShadow());
 
   // move to the new position
   FWindow::setPos(pos, false);
@@ -193,8 +193,8 @@ void FDialog::setPos (const FPoint& pos, bool)
   if ( getTermGeometry().overlap(old_geometry) )
   {
     FRect restore{};
-    std::size_t d_width = std::size_t(std::abs(dx));
+    const std::size_t d_width = std::size_t(std::abs(dx));
-    std::size_t d_height = std::size_t(std::abs(dy));
+    const std::size_t d_height = std::size_t(std::abs(dy));
 
     // dx > 0 : move left
     // dx = 0 : move vertical
@@ -285,16 +285,16 @@ void FDialog::setSize (const FSize& size, bool adjust)
     return;
   }
 
-  int x = getTermX();
+  const int x = getTermX();
-  int y = getTermY();
+  const int y = getTermY();
-  int dw = int(getWidth()) - int(size.getWidth());
+  const int dw = int(getWidth()) - int(size.getWidth());
-  int dh = int(getHeight()) - int(size.getHeight());
+  const int dh = int(getHeight()) - int(size.getHeight());
   const auto& shadow = getShadow();
   FWindow::setSize (size, adjust);
 
   // get adjust width and height
-  std::size_t w = getWidth() + shadow.getWidth();
+  const std::size_t w = getWidth() + shadow.getWidth();
-  std::size_t h = getHeight() + shadow.getHeight();
+  const std::size_t h = getHeight() + shadow.getHeight();
 
   // dw > 0 : scale down width
   // dw = 0 : scale only height
@@ -303,8 +303,8 @@ void FDialog::setSize (const FSize& size, bool adjust)
   // dh = 0 : scale only width
   // dh < 0 : scale up height
 
-  std::size_t d_width = std::size_t(dw);
+  const std::size_t d_width = std::size_t(dw);
-  std::size_t d_height = std::size_t(dh);
+  const std::size_t d_height = std::size_t(dh);
 
   // restoring the non-covered terminal areas
   if ( dw > 0 )
@@ -437,9 +437,9 @@ void FDialog::onKeyPress (FKeyEvent* ev)
 //----------------------------------------------------------------------
 void FDialog::onMouseDown (FMouseEvent* ev)
 {
-  int width = int(getWidth());
+  const int width = int(getWidth());
 
-  mouseStates ms =
+  const mouseStates ms =
   {
     ev->getX(),
     ev->getY(),
@@ -498,7 +498,7 @@ void FDialog::onMouseDown (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FDialog::onMouseUp (FMouseEvent* ev)
 {
-  mouseStates ms =
+  const mouseStates ms =
   {
     ev->getX(),
     ev->getY(),
@@ -509,15 +509,15 @@ void FDialog::onMouseUp (FMouseEvent* ev)
 
   if ( ev->getButton() == fc::LeftButton )
   {
-    int titlebar_x = titlebar_click_pos.getX()
+    const int titlebar_x = titlebar_click_pos.getX();
-      , titlebar_y = titlebar_click_pos.getY();
+    const int titlebar_y = titlebar_click_pos.getY();
 
     if ( ! titlebar_click_pos.isOrigin()
       && titlebar_x > int(getTermX()) + 3
       && titlebar_x < getTermX() + int(getWidth())
       && titlebar_y == int(getTermY()) )
     {
-      FPoint deltaPos(ms.termPos - titlebar_click_pos);
+      const FPoint deltaPos(ms.termPos - titlebar_click_pos);
       move (deltaPos);
       titlebar_click_pos = ms.termPos;
     }
@@ -547,7 +547,7 @@ void FDialog::onMouseUp (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FDialog::onMouseMove (FMouseEvent* ev)
 {
-  mouseStates ms =
+  const mouseStates ms =
   {
     ev->getX(),
     ev->getY(),
@@ -561,7 +561,7 @@ void FDialog::onMouseMove (FMouseEvent* ev)
 
   if ( ! titlebar_click_pos.isOrigin() )
   {
-    FPoint deltaPos(ms.termPos - titlebar_click_pos);
+    const FPoint deltaPos(ms.termPos - titlebar_click_pos);
     move (deltaPos);
     titlebar_click_pos = ms.termPos;
   }
@@ -577,7 +577,7 @@ void FDialog::onMouseMove (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FDialog::onMouseDoubleClick (FMouseEvent* ev)
 {
-  mouseStates ms =
+  const mouseStates ms =
   {
     ev->getX(),
     ev->getY(),
@@ -589,10 +589,10 @@ void FDialog::onMouseDoubleClick (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton )
     return;
 
-  int x = getTermX();
+  const int x = getTermX();
-  int y = getTermY();
+  const int y = getTermY();
-  FRect title_button(x, y, 3, 1);
+  const FRect title_button(x, y, 3, 1);
-  FPoint tPos(ms.termPos);
+  const FPoint tPos(ms.termPos);
 
   if ( title_button.contains(tPos) )
   {
@@ -629,7 +629,7 @@ void FDialog::onAccel (FAccelEvent*)
 {
   if ( ! (isWindowHidden() || isWindowActive()) )
   {
-    bool has_raised = raiseWindow();
+    const bool has_raised = raiseWindow();
     activateDialog();
 
     if ( has_raised )
@@ -913,7 +913,7 @@ void FDialog::drawBorder()
 
   if ( isNewFont() )  // Draw a newfont U-shaped frame
   {
-    FRect r(FPoint(1, 1), getSize());
+    const FRect r(FPoint(1, 1), getSize());
 
     for (int y = r.getY1() + 1; y < r.getY2(); y++)
     {
@@ -1092,9 +1092,9 @@ void FDialog::drawTextBar()
   else
     setColor (wc.titlebar_inactive_fg, wc.titlebar_inactive_bg);
 
-  auto width = getWidth();
+  const auto width = getWidth();
-  auto zoom_btn = getZoomButtonWidth();
+  const auto zoom_btn = getZoomButtonWidth();
-  auto length = getColumnWidth(tb_text);
+  const auto length = getColumnWidth(tb_text);
 
   if ( width > length + MENU_BTN + zoom_btn )
     center_offset = (width - length - MENU_BTN - zoom_btn) / 2;
@@ -1154,7 +1154,7 @@ void FDialog::setCursorToFocusWidget()
     && focus->isShown()
     && focus->hasVisibleCursor() )
   {
-    FPoint cursor_pos(focus->getCursorPos());
+    const FPoint cursor_pos(focus->getCursorPos());
     focus->setCursorPos(cursor_pos);
     updateVTermCursor(getVWin());
   }
@@ -1310,7 +1310,7 @@ void FDialog::pressZoomButton (const mouseStates& ms)
 //----------------------------------------------------------------------
 inline bool FDialog::isMouseOverMenu (const FPoint& termpos)
 {
-  const auto& menu_geometry = dialog_menu->getTermGeometry();
+  auto menu_geometry = dialog_menu->getTermGeometry();
 
   if ( dialog_menu->getCount() > 0 && menu_geometry.contains(termpos) )
     return true;
@@ -1329,7 +1329,7 @@ inline void FDialog::passEventToSubMenu ( const mouseStates& ms
 
   const auto& g = ms.termPos;
   const auto& p = dialog_menu->termToWidgetPos(g);
-  int b = ev->getButton();
+  const int b = ev->getButton();
 
   try
   {
@@ -1415,7 +1415,7 @@ inline void FDialog::moveSizeKey (FKeyEvent* ev)
 //----------------------------------------------------------------------
 inline void FDialog::raiseActivateDialog()
 {
-  bool has_raised = raiseWindow();
+  const bool has_raised = raiseWindow();
   activateDialog();
 
   if ( has_raised )
@@ -1425,7 +1425,7 @@ inline void FDialog::raiseActivateDialog()
 //----------------------------------------------------------------------
 inline void FDialog::lowerActivateDialog()
 {
-  bool has_lowered = lowerWindow();
+  const bool has_lowered = lowerWindow();
 
   if ( ! isWindowActive() )
     activateDialog();
@@ -1472,13 +1472,13 @@ void FDialog::resizeMouseDown (const mouseStates& ms)
   if ( isResizeable() && isLowerRightResizeCorner(ms) )
   {
     resize_click_pos = ms.termPos;
-    FPoint lower_right_pos(getTermGeometry().getLowerRightPos());
+    const FPoint lower_right_pos(getTermGeometry().getLowerRightPos());
 
     if ( ms.termPos != lower_right_pos )
     {
-      FPoint deltaPos(ms.termPos - lower_right_pos);
+      const FPoint deltaPos(ms.termPos - lower_right_pos);
-      int w = lower_right_pos.getX() + deltaPos.getX() - getTermX() + 1;
+      const int w = lower_right_pos.getX() + deltaPos.getX() - getTermX() + 1;
-      int h = lower_right_pos.getY() + deltaPos.getY() - getTermY() + 1;
+      const int h = lower_right_pos.getY() + deltaPos.getY() - getTermY() + 1;
       const FSize& size = FSize(std::size_t(w), std::size_t(h));
       setSize (size, true);
     }
@@ -1495,12 +1495,12 @@ void FDialog::resizeMouseUpMove (const mouseStates& ms, bool mouse_up)
   // Resize the dialog
   if ( isResizeable() && ! resize_click_pos.isOrigin() )
   {
-    auto r = getRootWidget();
+    const auto& r = getRootWidget();
     resize_click_pos = ms.termPos;
-    int x2 = resize_click_pos.getX()
+    const int x2 = resize_click_pos.getX();
-      , y2 = resize_click_pos.getY()
+    const int y2 = resize_click_pos.getY();
-      , x2_offset{0}
+    int x2_offset{0};
-      , y2_offset{0};
+    int y2_offset{0};
 
     if ( r )
     {
@@ -1511,7 +1511,7 @@ void FDialog::resizeMouseUpMove (const mouseStates& ms, bool mouse_up)
     if ( ms.termPos != getTermGeometry().getLowerRightPos() )
     {
       int w{}, h{};
-      FPoint deltaPos(ms.termPos - resize_click_pos);
+      const FPoint deltaPos(ms.termPos - resize_click_pos);
 
       if ( x2 - x2_offset <= int(getMaxWidth()) )
         w = resize_click_pos.getX() + deltaPos.getX() - getTermX() + 1;

src/fdialoglistmenu.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *

src/ffiledialog.cpp

@@ -167,7 +167,7 @@ FFileDialog& FFileDialog::operator = (const FFileDialog& fdlg)
 //----------------------------------------------------------------------
 const FString FFileDialog::getSelectedFile() const
 {
-  uLong n = uLong(filebrowser.currentItem() - 1);
+  const uLong n = uLong(filebrowser.currentItem() - 1);
 
   if ( dir_entries[n].directory )
     return FString("");
@@ -244,7 +244,7 @@ void FFileDialog::onKeyPress (FKeyEvent* ev)
   if ( ! filebrowser.hasFocus() )
     return;
 
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -281,7 +281,7 @@ const FString FFileDialog::fileSaveChooser ( FWidget* parent
 void FFileDialog::adjustSize()
 {
   std::size_t max_width{}, max_height{};
-  auto root_widget = getRootWidget();
+  const auto& root_widget = getRootWidget();
 
   if ( root_widget )
   {
@@ -304,8 +304,8 @@ void FFileDialog::adjustSize()
     h = 30;
 
   setHeight (h, false);
-  int X = 1 + int((max_width - getWidth()) / 2);
+  const int X = 1 + int((max_width - getWidth()) / 2);
-  int Y = 1 + int((max_height - getHeight()) / 3);
+  const int Y = 1 + int((max_height - getHeight()) / 3);
   setPos(FPoint(X, Y), false);
   filebrowser.setHeight (h - 8, false);
   hidden_check.setY (int(h) - 4, false);
@@ -328,7 +328,7 @@ void FFileDialog::init()
     fsystem = FTerm::getFSystem();
 
   setGeometry(FPoint(1, 1), FSize(w, h), false);
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
 
   if ( parent_widget )
   {
@@ -458,7 +458,7 @@ sInt64 FFileDialog::numOfDirs()
   if ( dir_entries.empty() )
     return 0;
 
-  sInt64 n = std::count_if ( std::begin(dir_entries)
+  const sInt64 n = std::count_if ( std::begin(dir_entries)
                                  , std::end(dir_entries)
                                  , [] (dir_entry& entry)
                                    {
@@ -477,7 +477,7 @@ void FFileDialog::sortDir()
   if ( std::strcmp((*dir_entries.begin()).name, "..") == 0 )
     start = 1;
 
-  sInt64 dir_num = numOfDirs();
+  const sInt64 dir_num = numOfDirs();
   // directories first
   std::sort ( dir_entries.begin() + start
             , dir_entries.end()
@@ -727,13 +727,13 @@ void FFileDialog::printPath (const FString& txt)
 {
   const auto& path = txt;
   const std::size_t max_width = filebrowser.getWidth() - 4;
-  std::size_t column_width = getColumnWidth(path);
+  const std::size_t column_width = getColumnWidth(path);
 
   if ( column_width > max_width )
   {
     const std::size_t width = max_width - 2;
-    std::size_t first = column_width + 1 - width;
+    const std::size_t first = column_width + 1 - width;
-    FString sub_str(getColumnSubString (path, first, width));
+    const FString sub_str(getColumnSubString (path, first, width));
     filebrowser.setText(".." + sub_str);
   }
   else
@@ -750,7 +750,7 @@ const FString FFileDialog::getHomeDir()
   if ( ! fsystem )
     fsystem = FTerm::getFSystem();
 
-  uid_t euid = fsystem->geteuid();
+  const uid_t euid = fsystem->geteuid();
 
   if ( fsystem->getpwuid_r(euid, &pwd, buf, sizeof(buf), &pwd_ptr) )
     return FString("");

src/fkeyboard.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -81,7 +81,7 @@ void FKeyboard::fetchKeyCode()
 }
 
 //----------------------------------------------------------------------
-const FString FKeyboard::getKeyName (FKey keynum)
+const FString FKeyboard::getKeyName (const FKey keynum)
 {
   for (std::size_t i{0}; fc::fkeyname[i].string[0] != 0; i++)
     if ( fc::fkeyname[i].num && fc::fkeyname[i].num == keynum )
@@ -118,13 +118,13 @@ bool FKeyboard::isKeyPressed()
 {
   fd_set ifds{};
   struct timeval tv{};
-  int stdin_no = FTermios::getStdIn();
+  const int stdin_no = FTermios::getStdIn();
 
   FD_ZERO(&ifds);
   FD_SET(stdin_no, &ifds);
   tv.tv_sec  = 0;
   tv.tv_usec = 100000;  // 100 ms
-  int result = select (stdin_no + 1, &ifds, 0, 0, &tv);
+  const int result = select (stdin_no + 1, &ifds, 0, 0, &tv);
 
   if ( result > 0 && FD_ISSET(stdin_no, &ifds) )
     FD_CLR (stdin_no, &ifds);
@@ -185,7 +185,7 @@ inline FKey FKeyboard::getMouseProtocolKey()
   if ( ! mouse_support )
     return NOT_SET;
 
-  std::size_t buf_len = std::strlen(fifo_buf);
+  const std::size_t buf_len = std::strlen(fifo_buf);
 
   // x11 mouse tracking
   if ( buf_len >= 6 && fifo_buf[1] == '[' && fifo_buf[2] == 'M' )
@@ -217,8 +217,8 @@ inline FKey FKeyboard::getTermcapKey()
 
   for (std::size_t i{0}; key_map[i].tname[0] != 0; i++)
   {
-    char* k = key_map[i].string;
+    const char* k = key_map[i].string;
-    std::size_t len = ( k ) ? std::strlen(k) : 0;
+    const std::size_t len = ( k ) ? std::strlen(k) : 0;
 
     if ( k && std::strncmp(k, fifo_buf, len) == 0 )  // found
     {
@@ -247,8 +247,8 @@ inline FKey FKeyboard::getMetaKey()
 
   for (std::size_t i{0}; fc::fmetakey[i].string[0] != 0; i++)
   {
-    char* kmeta = fc::fmetakey[i].string;  // The string is never null
+    const char* kmeta = fc::fmetakey[i].string;  // The string is never null
-    std::size_t len = std::strlen(kmeta);
+    const std::size_t len = std::strlen(kmeta);
 
     if ( std::strncmp(kmeta, fifo_buf, len) == 0 )  // found
     {
@@ -283,7 +283,7 @@ inline FKey FKeyboard::getSingleKey()
 
   std::size_t n{};
   std::size_t len{1};
-  uChar firstchar = uChar(fifo_buf[0]);
+  const uChar firstchar = uChar(fifo_buf[0]);
   FKey keycode{};
 
   // Look for a utf-8 character
@@ -362,7 +362,7 @@ FKey FKeyboard::UTF8decode (const char utf8[])
 
   for (std::size_t i{0}; i < len; ++i)
   {
-    uChar ch = uChar(utf8[i]);
+    const uChar ch = uChar(utf8[i]);
 
     if ( (ch & 0xc0) == 0x80 )
     {
@@ -403,7 +403,7 @@ FKey FKeyboard::UTF8decode (const char utf8[])
 inline ssize_t FKeyboard::readKey()
 {
   setNonBlockingInput();
-  ssize_t bytes = read(FTermios::getStdIn(), &read_buf, READ_BUF_SIZE - 1);
+  const ssize_t bytes = read(FTermios::getStdIn(), &read_buf, READ_BUF_SIZE - 1);
   unsetNonBlockingInput();
   return bytes;
 }
@@ -459,7 +459,7 @@ void FKeyboard::parseKeyBuffer()
 //----------------------------------------------------------------------
 FKey FKeyboard::parseKeyString()
 {
-  uChar firstchar = uChar(fifo_buf[0]);
+  const uChar firstchar = uChar(fifo_buf[0]);
 
   if ( firstchar == ESC[0] )
   {

src/flabel.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -163,7 +163,7 @@ void FLabel::onMouseDown (FMouseEvent* ev)
     // send click to the parent widget
     if ( auto parent = getParentWidget() )
     {
-      int b = ev->getButton();
+      const int b = ev->getButton();
       const auto& tp = ev->getTermPos();
       const auto& p = parent->termToWidgetPos(tp);
 
@@ -245,7 +245,7 @@ void FLabel::cb_accel_widget_destroyed (FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void FLabel::init()
 {
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
   unsetFocusable();
 
   if ( parent_widget )
@@ -268,9 +268,9 @@ void FLabel::setHotkeyAccelerator()
 }
 
 //----------------------------------------------------------------------
-std::size_t FLabel::getAlignOffset (std::size_t length)
+std::size_t FLabel::getAlignOffset (const std::size_t length)
 {
-  std::size_t width(getWidth());
+  const std::size_t width(getWidth());
 
   switch ( alignment )
   {
@@ -331,14 +331,14 @@ void FLabel::draw()
 void FLabel::drawMultiLine()
 {
   std::size_t y{0};
-  std::size_t text_lines = multiline_text.size();
+  const std::size_t text_lines = multiline_text.size();
   bool hotkey_printed{false};
 
   while ( y < text_lines && y < std::size_t(getHeight()) )
   {
     FString label_text{};
     hotkeypos = NOT_SET;
-    auto length = multiline_text[y].getLength();
+    const auto length = multiline_text[y].getLength();
     column_width = getColumnWidth(multiline_text[y]);
 
     if ( ! hotkey_printed )
@@ -381,7 +381,7 @@ void FLabel::printLine (FString&& line)
 {
   std::size_t to_char{};
   std::size_t to_column{};
-  std::size_t width(getWidth());
+  const std::size_t width(getWidth());
 
   if ( align_offset > 0 )
     print (FString(align_offset, ' '));  // leading spaces
@@ -443,7 +443,7 @@ void FLabel::printLine (FString&& line)
   else if ( align_offset + to_column < width )
   {
     // Print trailing spaces
-    std::size_t len = width - align_offset - to_column;
+    const std::size_t len = width - align_offset - to_column;
     print (FString(len, ' '));
   }
 

src/flineedit.cpp

@@ -280,7 +280,7 @@ void FLineEdit::hide()
     label->hide();
 
   FWidget::hide();
-  FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
+  const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
   hideArea (getSize() + shadow);
 }
 
@@ -302,7 +302,7 @@ void FLineEdit::onKeyPress (FKeyEvent* ev)
   if ( isReadOnly() )
     return;
 
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -387,13 +387,13 @@ void FLineEdit::onMouseDown (FMouseEvent* ev)
       getStatusBar()->drawMessage();
   }
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
-  int xmin = 2 + int(char_width_offset);
+  const int xmin = 2 + int(char_width_offset);
 
   if ( mouse_x >= xmin && mouse_x <= int(getWidth()) && mouse_y == 1 )
   {
-    std::size_t len = print_text.getLength();
+    const std::size_t len = print_text.getLength();
     cursor_pos = clickPosToCursorPos (std::size_t(mouse_x) - 2);
 
     if ( cursor_pos >= len )
@@ -424,9 +424,9 @@ void FLineEdit::onMouseMove (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton || isReadOnly() )
     return;
 
-  std::size_t len = print_text.getLength();
+  const std::size_t len = print_text.getLength();
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x >= 2 && mouse_x <= int(getWidth()) && mouse_y == 1 )
   {
@@ -498,7 +498,7 @@ void FLineEdit::onWheel (FWheelEvent* ev)
 //----------------------------------------------------------------------
 void FLineEdit::onTimer (FTimerEvent*)
 {
-  auto len = print_text.getLength();
+  const auto len = print_text.getLength();
 
   switch ( int(drag_scroll) )
   {
@@ -616,7 +616,7 @@ void FLineEdit::onFocusOut (FFocusEvent*)
 void FLineEdit::adjustLabel()
 {
   auto label_width = getColumnWidth(label_text);
-  auto w = label_associated_widget;
+  const auto& w = label_associated_widget;
 
   if ( ! w )
     return;
@@ -722,7 +722,7 @@ void FLineEdit::draw()
 //----------------------------------------------------------------------
 void FLineEdit::drawInputField()
 {
-  bool isActiveFocus = getFlags().active && getFlags().focus;
+  const bool isActiveFocus = getFlags().active && getFlags().focus;
   print() << FPoint(1, 1);
 
   if ( isMonochron() )
@@ -744,7 +744,7 @@ void FLineEdit::drawInputField()
   if ( isActiveFocus && getMaxColor() < 16 )
     setBold();
 
-  std::size_t text_offset_column = [&] () -> std::size_t
+  const std::size_t text_offset_column = [&] () -> std::size_t
   {
     switch ( input_type )
     {
@@ -777,8 +777,8 @@ void FLineEdit::drawInputField()
     drawShadow(this);
 
   // set the cursor to the insert pos.
-  auto cursor_pos_column = getCursorColumnPos();
+  const auto cursor_pos_column = getCursorColumnPos();
-  int xpos = int(2 + cursor_pos_column
+  const int xpos = int(2 + cursor_pos_column
                          - text_offset_column
                          + char_width_offset);
   setCursorPos (FPoint(xpos, 1));
@@ -787,8 +787,8 @@ void FLineEdit::drawInputField()
 //----------------------------------------------------------------------
 inline std::size_t FLineEdit::printTextField()
 {
-  std::size_t text_offset_column = getColumnWidth (print_text, text_offset);
+  const std::size_t text_offset_column = getColumnWidth (print_text, text_offset);
-  std::size_t start_column = text_offset_column - char_width_offset + 1;
+  const std::size_t start_column = text_offset_column - char_width_offset + 1;
   const FString& show_text = \
       getColumnSubString(print_text, start_column, getWidth() - 2);
 
@@ -802,8 +802,8 @@ inline std::size_t FLineEdit::printTextField()
 //----------------------------------------------------------------------
 inline std::size_t FLineEdit::printPassword()
 {
-  std::size_t text_offset_column = text_offset;
+  const std::size_t text_offset_column = text_offset;
-  FString show_text(print_text.mid(1 + text_offset, getWidth() - 2));
+  const FString show_text(print_text.mid(1 + text_offset, getWidth() - 2));
 
   if ( ! show_text.isEmpty() )
     print() << FString(show_text.getLength(), fc::Bullet);  // •
@@ -844,14 +844,23 @@ inline FLineEdit::offsetPair FLineEdit::endPosToOffset (std::size_t pos)
 {
   std::size_t input_width = getWidth() - 2;
   std::size_t fullwidth_char_offset{0};
-  std::size_t len = print_text.getLength();
+  const std::size_t len = print_text.getLength();
 
   if ( pos >= len )
     pos = len - 1;
 
   while ( pos > 0 && input_width > 0 )
   {
-    std::size_t char_width = getColumnWidth(print_text[pos]);
+    std::size_t char_width{};
+
+    try
+    {
+      char_width = getColumnWidth(print_text[pos]);
+    }
+    catch (const std::out_of_range& ex)
+    {
+      std::cerr << "Out of Range error: " << ex.what() << std::endl;
+    }
 
     if ( input_width >= char_width )
       input_width -= char_width;
@@ -862,6 +871,8 @@ inline FLineEdit::offsetPair FLineEdit::endPosToOffset (std::size_t pos)
     if ( input_width == 1)
     {
       if ( char_width == 1 )
+      {
+        try
         {
           if ( getColumnWidth(print_text[pos - 1]) == 2 )  // pos is always > 0
           {
@@ -869,6 +880,11 @@ inline FLineEdit::offsetPair FLineEdit::endPosToOffset (std::size_t pos)
             break;
           }
         }
+        catch (const std::out_of_range& ex)
+        {
+          std::cerr << "Out of Range error: " << ex.what() << std::endl;
+        }
+      }
 
       if ( char_width == 2 )
       {
@@ -888,12 +904,22 @@ std::size_t FLineEdit::clickPosToCursorPos (std::size_t pos)
 {
   std::size_t click_width{0};
   std::size_t idx = text_offset;
-  std::size_t len = print_text.getLength();
+  const std::size_t len = print_text.getLength();
   pos -= char_width_offset;
 
   while ( click_width < pos && idx < len )
   {
-    std::size_t char_width = getColumnWidth(print_text[idx]);
+    std::size_t char_width{};
+
+    try
+    {
+      char_width = getColumnWidth(print_text[idx]);
+    }
+    catch (const std::out_of_range& ex)
+    {
+      std::cerr << "Out of Range error: " << ex.what() << std::endl;
+    }
+
     idx++;
     click_width += char_width;
 
@@ -907,11 +933,11 @@ std::size_t FLineEdit::clickPosToCursorPos (std::size_t pos)
 //----------------------------------------------------------------------
 void FLineEdit::adjustTextOffset()
 {
-  std::size_t input_width = getWidth() - 2;
+  const std::size_t input_width = getWidth() - 2;
-  std::size_t len = print_text.getLength();
+  const std::size_t len = print_text.getLength();
-  std::size_t len_column = getColumnWidth (print_text);
+  const std::size_t len_column = getColumnWidth (print_text);
   std::size_t text_offset_column = getColumnWidth (print_text, text_offset);
-  std::size_t cursor_pos_column = getColumnWidth (print_text, cursor_pos);
+  const std::size_t cursor_pos_column = getColumnWidth (print_text, cursor_pos);
   std::size_t first_char_width{0};
   std::size_t cursor_char_width{1};
   char_width_offset = 0;
@@ -929,7 +955,16 @@ void FLineEdit::adjustTextOffset()
   }
 
   if ( len > 0 )
+  {
+    try
+    {
       first_char_width = getColumnWidth(print_text[0]);
+    }
+    catch (const std::out_of_range& ex)
+    {
+      std::cerr << "Out of Range error: " << ex.what() << std::endl;
+    }
+  }
 
   // Text alignment right for long lines
   while ( text_offset > 0 && len_column - text_offset_column < input_width )
@@ -941,7 +976,7 @@ void FLineEdit::adjustTextOffset()
   // Right cursor overflow
   if ( cursor_pos_column + 1 > text_offset_column + input_width )
   {
-    offsetPair offset_pair = endPosToOffset(cursor_pos);
+    const offsetPair offset_pair = endPosToOffset(cursor_pos);
     text_offset = offset_pair.first;
     char_width_offset = offset_pair.second;
     text_offset_column = getColumnWidth (print_text, text_offset);
@@ -974,7 +1009,7 @@ inline void FLineEdit::cursorLeft()
 //----------------------------------------------------------------------
 inline void FLineEdit::cursorRight()
 {
-  auto len = text.getLength();
+  const auto& len = text.getLength();
 
   if ( cursor_pos < len )
     cursor_pos++;
@@ -993,7 +1028,7 @@ inline void FLineEdit::cursorHome()
 //----------------------------------------------------------------------
 inline void FLineEdit::cursorEnd()
 {
-  auto len = text.getLength();
+  const auto& len = text.getLength();
 
   if ( cursor_pos == len )
     return;
@@ -1007,7 +1042,7 @@ inline void FLineEdit::deleteCurrentCharacter()
 {
   // Delete key functionality
 
-  auto len = text.getLength();
+  const auto& len = text.getLength();
 
   if ( len > 0 && cursor_pos < len )
   {
@@ -1063,7 +1098,7 @@ inline bool FLineEdit::keyInput (FKey key)
   if ( key >= 0x20 && key <= 0x10fff )
   {
     auto len = text.getLength();
-    auto ch = characterFilter(wchar_t(key));
+    const auto ch = characterFilter(wchar_t(key));
 
     if ( ch == L'\0' )
       return false;
@@ -1098,7 +1133,7 @@ inline wchar_t FLineEdit::characterFilter (const wchar_t c)
   if ( input_filter.empty() )
     return c;
 
-  wchar_t character[2]{c, L'\0'};
+  const wchar_t character[2]{c, L'\0'};
 
   if ( regex_match(character, std::wregex(input_filter)) )
     return c;

src/flistbox.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -106,7 +106,7 @@ void FListBox::setCurrentItem (std::size_t index)
   if ( index == current )
     return;
 
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
 
   if ( index > element_count )
     current = element_count;
@@ -125,12 +125,12 @@ void FListBox::setCurrentItem (std::size_t index)
 //----------------------------------------------------------------------
 void FListBox::setCurrentItem (listBoxItems::iterator iter)
 {
-  std::size_t index = std::size_t(std::distance(itemlist.begin(), iter)) + 1;
+  const auto index = std::size_t(std::distance(itemlist.begin(), iter)) + 1;
   setCurrentItem(index);
 }
 
 //----------------------------------------------------------------------
-void FListBox::showInsideBrackets ( std::size_t index
+void FListBox::showInsideBrackets ( const std::size_t index
                                   , fc::brackets_type b )
 {
   auto iter = index2iterator(index - 1);
@@ -139,7 +139,7 @@ void FListBox::showInsideBrackets ( std::size_t index
   if ( b == fc::NoBrackets )
     return;
 
-  std::size_t column_width = getColumnWidth(iter->getText()) + 2;
+  const auto column_width = getColumnWidth(iter->getText()) + 2;
 
   if ( column_width > max_line_width )
   {
@@ -147,7 +147,7 @@ void FListBox::showInsideBrackets ( std::size_t index
 
     if ( column_width >= getWidth() - nf_offset - 3 )
     {
-      int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
+      const int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
                        ? int(max_line_width - getWidth() + nf_offset + 4)
                        : 0;
       hbar->setMaximum (hmax);
@@ -191,8 +191,8 @@ void FListBox::hide()
 //----------------------------------------------------------------------
 void FListBox::insert (FListBoxItem listItem)
 {
-  std::size_t column_width = getColumnWidth(listItem.text);
+  const std::size_t column_width = getColumnWidth(listItem.text);
-  bool has_brackets(listItem.brackets);
+  const bool has_brackets(listItem.brackets);
   recalculateHorizontalBar (column_width, has_brackets);
 
   itemlist.push_back (listItem);
@@ -211,18 +211,18 @@ void FListBox::remove (std::size_t item)
     return;
 
   itemlist.erase (itemlist.begin() + int(item) - 1);
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
   max_line_width = 0;
 
   for (auto&& listbox_item : itemlist)
   {
-    std::size_t column_width = getColumnWidth(listbox_item.getText());
+    const auto column_width = getColumnWidth(listbox_item.getText());
 
     if ( column_width > max_line_width )
       max_line_width = column_width;
   }
 
-  int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
+  const int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
                    ? int(max_line_width - getWidth() + nf_offset + 4)
                    : 0;
   hbar->setMaximum (hmax);
@@ -231,7 +231,7 @@ void FListBox::remove (std::size_t item)
   if ( hbar->isShown() && isHorizontallyScrollable() )
     hbar->hide();
 
-  int vmax = ( element_count + 2 > getHeight() )
+  const int vmax = ( element_count + 2 > getHeight() )
                    ? int(element_count - getHeight()) + 2
                    : 0;
   vbar->setMaximum (vmax);
@@ -276,7 +276,7 @@ void FListBox::clear()
   // clear list from screen
   const auto& wc = getFWidgetColors();
   setColor (wc.list_fg, wc.list_bg);
-  std::size_t size = getWidth() - 2;
+  const std::size_t size = getWidth() - 2;
   drawBorder();
   drawHeadline();
 
@@ -292,9 +292,9 @@ void FListBox::clear()
 //----------------------------------------------------------------------
 void FListBox::onKeyPress (FKeyEvent* ev)
 {
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int xoffset_before = xoffset;
+  const int xoffset_before = xoffset;
-  int yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
   processKeyAction(ev);  // Process the keystrokes
 
   if ( current_before != current )
@@ -302,8 +302,8 @@ void FListBox::onKeyPress (FKeyEvent* ev)
 
   if ( ev->isAccepted() )
   {
-    bool draw_vbar( yoffset_before != yoffset );
+    const bool draw_vbar( yoffset_before != yoffset );
-    bool draw_hbar( xoffset_before != xoffset );
+    const bool draw_hbar( xoffset_before != xoffset );
     updateDrawing (draw_vbar, draw_hbar);
   }
 }
@@ -322,16 +322,16 @@ void FListBox::onMouseDown (FMouseEvent* ev)
 
   getWidgetFocus();
 
-  int yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
   {
     click_on_list = true;
-    std::size_t element_count = getCount();
+    const std::size_t element_count = getCount();
     current = std::size_t(yoffset + mouse_y - 1);
 
     if ( current > element_count )
@@ -370,8 +370,8 @@ void FListBox::onMouseUp (FMouseEvent* ev)
 
   if ( ev->getButton() == fc::LeftButton )
   {
-    int mouse_x = ev->getX();
+    const int mouse_x = ev->getX();
-    int mouse_y = ev->getY();
+    const int mouse_y = ev->getY();
 
     if ( mouse_x > 1 && mouse_x < int(getWidth())
       && mouse_y > 1 && mouse_y < int(getHeight()) )
@@ -392,16 +392,16 @@ void FListBox::onMouseMove (FMouseEvent* ev)
   if ( ev->getButton() == fc::RightButton && ! isMultiSelection() )
     return;
 
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
   {
     click_on_list = true;
-    std::size_t element_count = getCount();
+    const std::size_t element_count = getCount();
     current = std::size_t(yoffset + mouse_y - 1);
 
     if ( current > element_count )
@@ -448,8 +448,8 @@ void FListBox::onMouseDoubleClick (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton )
     return;
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
@@ -464,8 +464,8 @@ void FListBox::onMouseDoubleClick (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FListBox::onTimer (FTimerEvent*)
 {
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
 
   switch ( int(drag_scroll) )
   {
@@ -514,10 +514,10 @@ void FListBox::onTimer (FTimerEvent*)
 //----------------------------------------------------------------------
 void FListBox::onWheel (FWheelEvent* ev)
 {
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
-  int pagesize{4};
+  static constexpr int wheel_distance = 4;
-  int wheel = ev->getWheel();
+  const int wheel = ev->getWheel();
 
   if ( drag_scroll != fc::noScroll )
     stopDragScroll();
@@ -525,11 +525,11 @@ void FListBox::onWheel (FWheelEvent* ev)
   switch ( wheel )
   {
     case fc::WheelUp:
-      wheelUp (pagesize);
+      wheelUp (wheel_distance);
       break;
 
     case fc::WheelDown:
-      wheelDown (pagesize);
+      wheelDown (wheel_distance);
       break;
 
     default:
@@ -581,7 +581,7 @@ void FListBox::onFocusOut (FFocusEvent*)
 //----------------------------------------------------------------------
 void FListBox::adjustYOffset (std::size_t element_count)
 {
-  std::size_t height = getClientHeight();
+  const std::size_t height = getClientHeight();
 
   if ( height == 0 || element_count == 0 )
     return;
@@ -603,13 +603,13 @@ void FListBox::adjustYOffset (std::size_t element_count)
 void FListBox::adjustSize()
 {
   FWidget::adjustSize();
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
-  std::size_t width = getClientWidth();
+  const std::size_t width = getClientWidth();
-  std::size_t height = getClientHeight();
+  const std::size_t height = getClientHeight();
 
   adjustYOffset (element_count);
 
-  int vmax = ( element_count > height )
+  const int vmax = ( element_count > height )
                    ? int(element_count - height)
                    : 0;
   vbar->setMaximum (vmax);
@@ -618,7 +618,7 @@ void FListBox::adjustSize()
   vbar->setHeight (height, false);
   vbar->resize();
 
-  int hmax = ( max_line_width + 2 > width )
+  const int hmax = ( max_line_width + 2 > width )
                    ? int(max_line_width - width + 2)
                    : 0;
   hbar->setMaximum (hmax);
@@ -698,7 +698,7 @@ inline void FListBox::mapKeyFunctions()
 //----------------------------------------------------------------------
 void FListBox::processKeyAction (FKeyEvent* ev)
 {
-  int idx = int(ev->key());
+  const int idx = int(ev->key());
 
   if ( key_map.find(idx) != key_map.end() )
   {
@@ -789,8 +789,8 @@ void FListBox::drawHeadline()
   if ( text.isNull() || text.isEmpty() )
     return;
 
-  FString txt(" " + text + " ");
+  const FString txt(" " + text + " ");
-  auto column_width = getColumnWidth(txt);
+  const auto column_width = getColumnWidth(txt);
   print() << FPoint(2, 1);
   const auto& wc = getFWidgetColors();
 
@@ -826,8 +826,8 @@ void FListBox::drawList()
     && last_current != int(current) )
   {
     // speed up: redraw only the changed rows
-    std::size_t last_pos = current - std::size_t(yoffset) - 1;
+    const auto last_pos = current - std::size_t(yoffset) - 1;
-    std::size_t current_pos = std::size_t(last_current - yoffset) - 1;
+    const auto current_pos = std::size_t(last_current - yoffset) - 1;
     start = std::min(last_pos, current_pos);
     num = std::max(last_pos, current_pos) + 1;
   }
@@ -837,7 +837,7 @@ void FListBox::drawList()
   for (std::size_t y = start; y < num && iter != itemlist.end() ; y++)
   {
     bool serach_mark{false};
-    bool lineHasBrackets = hasBrackets(iter);
+    const bool lineHasBrackets = hasBrackets(iter);
 
     // Import data via lazy conversion
     lazyConvert (iter, int(y));
@@ -869,12 +869,12 @@ inline void FListBox::drawListLine ( int y
                                    , listBoxItems::iterator iter
                                    , bool serach_mark )
 {
-  std::size_t inc_len = inc_search.getLength();
+  const std::size_t inc_len = inc_search.getLength();
   const auto& wc = getFWidgetColors();
-  bool isCurrentLine( y + yoffset + 1 == int(current) );
+  const bool isCurrentLine( y + yoffset + 1 == int(current) );
-  std::size_t first = std::size_t(xoffset) + 1;
+  const std::size_t first = std::size_t(xoffset) + 1;
-  std::size_t max_width = getWidth() - nf_offset - 4;
+  const std::size_t max_width = getWidth() - nf_offset - 4;
-  FString element(getColumnSubString (getString(iter), first, max_width));
+  const FString element(getColumnSubString (getString(iter), first, max_width));
   std::size_t column_width = getColumnWidth(element);
 
   if ( isMonochron() && isCurrentLine && getFlags().focus )
@@ -924,9 +924,9 @@ inline void FListBox::drawListBracketsLine ( int y
                                            , listBoxItems::iterator iter
                                            , bool serach_mark )
 {
-  std::size_t inc_len = inc_search.getLength()
+  std::size_t b{0};
-            , b{0};
+  const std::size_t inc_len = inc_search.getLength();
-  bool isCurrentLine( y + yoffset + 1 == int(current) );
+  const bool isCurrentLine( y + yoffset + 1 == int(current) );
 
   if ( isMonochron() && isCurrentLine && getFlags().focus )
     print (fc::BlackRightPointingPointer);  // ►
@@ -939,11 +939,11 @@ inline void FListBox::drawListBracketsLine ( int y
     printLeftBracket (iter->brackets);
   }
 
-  std::size_t first = std::size_t(xoffset);
+  const std::size_t first = std::size_t(xoffset);
-  std::size_t max_width = getWidth() - nf_offset - 4 - b;
+  const std::size_t max_width = getWidth() - nf_offset - 4 - b;
-  FString element(getColumnSubString (getString(iter), first, max_width));
+  const FString element(getColumnSubString (getString(iter), first, max_width));
   std::size_t column_width = getColumnWidth(element);
-  std::size_t text_width = getColumnWidth(getString(iter));
+  const std::size_t text_width = getColumnWidth(getString(iter));
   std::size_t i{0};
   const auto& wc = getFWidgetColors();
 
@@ -987,9 +987,9 @@ inline void FListBox::setLineAttributes ( int y
                                         , bool lineHasBrackets
                                         , bool& serach_mark )
 {
-  bool isCurrentLine( y + yoffset + 1 == int(current) );
+  const bool isCurrentLine( y + yoffset + 1 == int(current) );
-  std::size_t inc_len = inc_search.getLength();
+  const std::size_t inc_len = inc_search.getLength();
-  std::size_t inc_width = getColumnWidth(inc_search);
+  const std::size_t inc_width = getColumnWidth(inc_search);
   const auto& wc = getFWidgetColors();
   print() << FPoint(2, 2 + int(y));
 
@@ -1035,7 +1035,7 @@ inline void FListBox::setLineAttributes ( int y
       {
         setColor ( wc.current_element_focus_fg
                  , wc.current_element_focus_bg );
-        int b = ( lineHasBrackets ) ? 1: 0;
+        const int b = ( lineHasBrackets ) ? 1: 0;
 
         if ( inc_len > 0 )  // incremental search
         {
@@ -1105,7 +1105,7 @@ void FListBox::recalculateHorizontalBar (std::size_t len, bool has_brackets)
 
   if ( len >= getWidth() - nf_offset - 3 )
   {
-    int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
+    const int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
                      ? int(max_line_width - getWidth() + nf_offset + 4)
                      : 0;
     hbar->setMaximum (hmax);
@@ -1125,7 +1125,7 @@ void FListBox::recalculateHorizontalBar (std::size_t len, bool has_brackets)
 //----------------------------------------------------------------------
 void FListBox::recalculateVerticalBar (std::size_t element_count)
 {
-  int vmax = ( element_count + 2 > getHeight() )
+  const int vmax = ( element_count + 2 > getHeight() )
                    ? int(element_count - getHeight() + 2)
                    : 0;
   vbar->setMaximum (vmax);
@@ -1237,7 +1237,7 @@ void FListBox::wheelUp (int pagesize)
 //----------------------------------------------------------------------
 void FListBox::wheelDown (int pagesize)
 {
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
   int yoffset_end = int(element_count - getClientHeight());
 
   if ( yoffset_end < 0 )
@@ -1276,7 +1276,7 @@ bool FListBox::dragScrollUp()
 //----------------------------------------------------------------------
 bool FListBox::dragScrollDown()
 {
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
 
   if ( current == element_count )
   {
@@ -1370,8 +1370,8 @@ void FListBox::prevListItem (int distance)
 //----------------------------------------------------------------------
 void FListBox::nextListItem (int distance)
 {
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
-  int yoffset_end = int(element_count - getClientHeight());
+  const int yoffset_end = int(element_count - getClientHeight());
 
   if ( current == element_count )
     return;
@@ -1393,7 +1393,8 @@ void FListBox::nextListItem (int distance)
 void FListBox::scrollToX (int val)
 {
   static constexpr std::size_t padding_space = 2;  // 1 leading + 1 trailing space
-  std::size_t xoffset_end = max_line_width - getClientWidth() + padding_space;
+  const std::size_t xoffset_end = max_line_width - getClientWidth()
+                                + padding_space;
 
   if ( xoffset == val )
     return;
@@ -1410,13 +1411,13 @@ void FListBox::scrollToX (int val)
 //----------------------------------------------------------------------
 void FListBox::scrollToY (int val)
 {
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
-  int yoffset_end = int(element_count - getClientHeight());
+  const int yoffset_end = int(element_count - getClientHeight());
 
   if ( yoffset == val )
     return;
 
-  int c = int(current) - yoffset;
+  const int c = int(current) - yoffset;
   yoffset = val;
 
   if ( yoffset > yoffset_end )
@@ -1450,7 +1451,8 @@ void FListBox::scrollLeft (int distance)
 void FListBox::scrollRight (int distance)
 {
   static constexpr std::size_t padding_space = 2;  // 1 leading + 1 trailing space
-  std::size_t xoffset_end = max_line_width - getClientWidth() + padding_space;
+  const std::size_t xoffset_end = max_line_width - getClientWidth()
+                                + padding_space;
   xoffset += distance;
 
   if ( xoffset == int(xoffset_end) )
@@ -1494,7 +1496,7 @@ inline void FListBox::onePosDown()
 //----------------------------------------------------------------------
 inline void FListBox::onePageUp()
 {
-  int pagesize = int(getClientHeight()) - 1;
+  const int pagesize = int(getClientHeight()) - 1;
   prevListItem (pagesize);
   inc_search.clear();
 }
@@ -1502,7 +1504,7 @@ inline void FListBox::onePageUp()
 //----------------------------------------------------------------------
 inline void FListBox::onePageDown()
 {
-  int pagesize = int(getClientHeight()) - 1;
+  const int pagesize = int(getClientHeight()) - 1;
   nextListItem (pagesize);
   inc_search.clear();
 }
@@ -1518,8 +1520,8 @@ inline void FListBox::firstPos()
 //----------------------------------------------------------------------
 inline void FListBox::lastPos()
 {
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
-  int yoffset_end = int(element_count - getClientHeight());
+  const int yoffset_end = int(element_count - getClientHeight());
   current = element_count;
 
   if ( current > getClientHeight() )
@@ -1550,7 +1552,7 @@ inline void FListBox::acceptSelection()
 //----------------------------------------------------------------------
 inline bool FListBox::spacebarProcessing()
 {
-  std::size_t inc_len = inc_search.getLength();
+  const std::size_t inc_len = inc_search.getLength();
 
   if ( inc_len > 0 )  // Enter a spacebar for incremental search
   {
@@ -1623,7 +1625,7 @@ inline bool FListBox::changeSelectionAndPosition()
 //----------------------------------------------------------------------
 inline bool FListBox::deletePreviousCharacter()
 {
-  std::size_t inc_len = inc_search.getLength();
+  const std::size_t inc_len = inc_search.getLength();
 
   if ( inc_len > 0 )
   {
@@ -1735,7 +1737,7 @@ void FListBox::lazyConvert(listBoxItems::iterator iter, int y)
     return;
 
   lazy_inserter (*iter, source_container, y + yoffset);
-  std::size_t column_width = getColumnWidth(iter->text);
+  const auto column_width = getColumnWidth(iter->text);
   recalculateHorizontalBar (column_width, hasBrackets(iter));
 
   if ( hbar->isShown() )
@@ -1746,10 +1748,10 @@ void FListBox::lazyConvert(listBoxItems::iterator iter, int y)
 void FListBox::cb_VBarChange (FWidget*, FDataPtr)
 {
   FScrollbar::sType scrollType;
-  std::size_t current_before = current;
+  const std::size_t current_before = current;
-  int distance{1}
+  static constexpr int wheel_distance = 4;
-    , pagesize{4}
+  int distance{1};
-    , yoffset_before = yoffset;
+  const int yoffset_before = yoffset;
   scrollType = vbar->getScrollType();
 
   switch ( scrollType )
@@ -1776,11 +1778,11 @@ void FListBox::cb_VBarChange (FWidget*, FDataPtr)
       break;
 
     case FScrollbar::scrollWheelUp:
-      wheelUp (pagesize);
+      wheelUp (wheel_distance);
       break;
 
     case FScrollbar::scrollWheelDown:
-      wheelDown (pagesize);
+      wheelDown (wheel_distance);
       break;
   }
 
@@ -1809,10 +1811,10 @@ void FListBox::cb_VBarChange (FWidget*, FDataPtr)
 void FListBox::cb_HBarChange (FWidget*, FDataPtr)
 {
   static constexpr int padding_space = 2;  // 1 leading space + 1 trailing space
+  static constexpr int wheel_distance = 4;
   FScrollbar::sType scrollType;
-  int distance{1}
+  int distance{1};
-    , pagesize{4}
+  const int xoffset_before = xoffset;
-    , xoffset_before = xoffset;
   scrollType = hbar->getScrollType();
 
   switch ( scrollType )
@@ -1839,11 +1841,11 @@ void FListBox::cb_HBarChange (FWidget*, FDataPtr)
       break;
 
     case FScrollbar::scrollWheelUp:
-      scrollLeft (pagesize);
+      scrollLeft (wheel_distance);
       break;
 
     case FScrollbar::scrollWheelDown:
-      scrollRight (pagesize);
+      scrollRight (wheel_distance);
       break;
   }
 

src/flistview.cpp

@@ -89,8 +89,8 @@ uInt64 firstNumberFromString (const FString& str)
     return 0;
 
   uInt64 number;
-  std::size_t pos = std::size_t(std::distance(str.begin(), first_pos)) + 1;
+  const auto pos = std::size_t(std::distance(str.begin(), first_pos)) + 1;
-  std::size_t length = std::size_t(std::distance(first_pos, last_pos));
+  const auto length = std::size_t(std::distance(first_pos, last_pos));
   const auto& num_str = str.mid(pos, length);
 
   try
@@ -108,8 +108,8 @@ uInt64 firstNumberFromString (const FString& str)
 //----------------------------------------------------------------------
 bool sortAscendingByName (const FObject* lhs, const FObject* rhs)
 {
-  const auto l_item = static_cast<const FListViewItem*>(lhs);
+  const auto& l_item = static_cast<const FListViewItem*>(lhs);
-  const auto r_item = static_cast<const FListViewItem*>(rhs);
+  const auto& r_item = static_cast<const FListViewItem*>(rhs);
   const int column = l_item->getSortColumn();
   const auto& l_string = l_item->getText(column);
   const auto& r_string = r_item->getText(column);
@@ -121,8 +121,8 @@ bool sortAscendingByName (const FObject* lhs, const FObject* rhs)
 //----------------------------------------------------------------------
 bool sortDescendingByName (const FObject* lhs, const FObject* rhs)
 {
-  const auto l_item = static_cast<const FListViewItem*>(lhs);
+  const auto& l_item = static_cast<const FListViewItem*>(lhs);
-  const auto r_item = static_cast<const FListViewItem*>(rhs);
+  const auto& r_item = static_cast<const FListViewItem*>(rhs);
   const int column = l_item->getSortColumn();
   const auto& l_string = l_item->getText(column);
   const auto& r_string = r_item->getText(column);
@@ -134,8 +134,8 @@ bool sortDescendingByName (const FObject* lhs, const FObject* rhs)
 //----------------------------------------------------------------------
 bool sortAscendingByNumber (const FObject* lhs, const FObject* rhs)
 {
-  const auto l_item = static_cast<const FListViewItem*>(lhs);
+  const auto& l_item = static_cast<const FListViewItem*>(lhs);
-  const auto r_item = static_cast<const FListViewItem*>(rhs);
+  const auto& r_item = static_cast<const FListViewItem*>(rhs);
   const int column = l_item->getSortColumn();
   const auto& l_number = firstNumberFromString(l_item->getText(column));
   const auto& r_number = firstNumberFromString(r_item->getText(column));
@@ -147,8 +147,8 @@ bool sortAscendingByNumber (const FObject* lhs, const FObject* rhs)
 //----------------------------------------------------------------------
 bool sortDescendingByNumber (const FObject* lhs, const FObject* rhs)
 {
-  const auto l_item = static_cast<const FListViewItem*>(lhs);
+  const auto& l_item = static_cast<const FListViewItem*>(lhs);
-  const auto r_item = static_cast<const FListViewItem*>(rhs);
+  const auto& r_item = static_cast<const FListViewItem*>(rhs);
   const int column = l_item->getSortColumn();
   const auto& l_number = firstNumberFromString(l_item->getText(column));
   const auto& r_number = firstNumberFromString(r_item->getText(column));
@@ -208,7 +208,23 @@ FListViewItem::FListViewItem ( const FStringList& cols
 
 //----------------------------------------------------------------------
 FListViewItem::~FListViewItem()  // destructor
-{ }
+{
+  // Remove from parent itemlist
+
+  auto parent = getParent();
+
+  if ( ! parent )
+    return;
+
+  if ( parent->isInstanceOf("FListView") )
+  {
+    static_cast<FListView*>(parent)->remove (this);
+  }
+  else if ( parent->isInstanceOf("FListViewItem") )
+  {
+    static_cast<FListViewItem*>(parent)->remove (this);
+  }
+}
 
 
 // public methods of FListViewItem
@@ -218,7 +234,7 @@ int FListViewItem::getSortColumn() const
   if ( ! *root )
     return -1;
 
-  auto root_obj = static_cast<FListView*>(*root);
+  const auto& root_obj = static_cast<FListView*>(*root);
   return root_obj->getSortColumn();
 }
 
@@ -231,18 +247,18 @@ FString FListViewItem::getText (int column) const
     return fc::emptyFString::get();
 
   // Convert column position to address offset (index)
-  std::size_t index = std::size_t(column - 1);
+  const std::size_t index = std::size_t(column - 1);
   return column_list[index];
 }
 
 //----------------------------------------------------------------------
 uInt FListViewItem::getDepth() const
 {
-  auto parent = getParent();
+  const auto& parent = getParent();
 
   if ( parent && parent->isInstanceOf("FListViewItem") )
   {
-    auto parent_item = static_cast<FListViewItem*>(parent);
+    const auto& parent_item = static_cast<FListViewItem*>(parent);
     return parent_item->getDepth() + 1;
   }
 
@@ -258,7 +274,7 @@ void FListViewItem::setText (int column, const FString& text)
     return;
 
   // Convert column position to address offset (index)
-  std::size_t index = std::size_t(column - 1);
+  const auto index = std::size_t(column - 1);
   auto parent = getParent();
 
   if ( parent && parent->isInstanceOf("FListView") )
@@ -267,7 +283,7 @@ void FListViewItem::setText (int column, const FString& text)
 
     if ( ! listview->header[index].fixed_width )
     {
-      int column_width = int(getColumnWidth(text));
+      const int column_width = int(getColumnWidth(text));
 
       if ( column_width > listview->header[index].width )
         listview->header[index].width = column_width;
@@ -313,6 +329,43 @@ FObject::iterator FListViewItem::insert ( FListViewItem* child
   return FListView::null_iter;
 }
 
+//----------------------------------------------------------------------
+void FListViewItem::remove (FListViewItem* item)
+{
+  if ( item == nullptr || item == *FListView::null_iter )
+    return;
+
+  auto parent = item->getParent();
+
+  // Search for a FListView parent in my object tree
+  while ( parent && ! parent->isInstanceOf("FListView") )
+  {
+    parent = parent->getParent();
+  }
+
+  if ( parent == nullptr )
+    return;
+
+  if ( parent->isInstanceOf("FListView") )
+  {
+    auto listview = static_cast<FListView*>(parent);
+    listview->remove(item);
+  }
+  else
+  {
+    parent = item->getParent();
+    parent->delChild(item);
+    auto parent_item = static_cast<FListViewItem*>(parent);
+    parent_item->visible_lines--;
+
+    if ( ! parent_item->hasChildren() )
+    {
+      parent_item->expandable = false;
+      parent_item->is_expand = false;
+    }
+  }
+}
+
 //----------------------------------------------------------------------
 void FListViewItem::expand()
 {
@@ -391,7 +444,7 @@ std::size_t FListViewItem::getVisibleLines()
 
   while ( iter != FObject::end() )
   {
-    auto child = static_cast<FListViewItem*>(*iter);
+    const auto& child = static_cast<FListViewItem*>(*iter);
     visible_lines += child->getVisibleLines();
     ++iter;
   }
@@ -497,7 +550,7 @@ FListViewIterator& FListViewIterator::operator -= (volatile int n)
 //----------------------------------------------------------------------
 void FListViewIterator::nextElement (iterator& iter)
 {
-  auto item = static_cast<FListViewItem*>(*iter);
+  const auto& item = static_cast<FListViewItem*>(*iter);
 
   if ( item->isExpandable() && item->isExpand() )
   {
@@ -512,7 +565,7 @@ void FListViewIterator::nextElement (iterator& iter)
 
     if ( ! iter_path.empty() )
     {
-      auto& parent_iter = iter_path.top();
+      const auto& parent_iter = iter_path.top();
 
       if ( iter == (*parent_iter)->end() )
       {
@@ -531,9 +584,9 @@ void FListViewIterator::prevElement (iterator& iter)
 
   if ( ! iter_path.empty() )
   {
-    auto& parent_iter = iter_path.top();
+    const auto& parent_iter = iter_path.top();
 
-    if ( start_iter == (*parent_iter)->begin() )
+    if ( start_iter == (*parent_iter)->begin() )  // First sub-item
     {
       iter = parent_iter;
       position--;
@@ -545,7 +598,7 @@ void FListViewIterator::prevElement (iterator& iter)
   --iter;
   auto item = static_cast<FListViewItem*>(*iter);
 
-  if ( iter == start_iter )
+  if ( iter == start_iter )  // No changes
     return;
   else
     position--;
@@ -565,7 +618,7 @@ void FListViewIterator::parentElement()
   if ( iter_path.empty() )
     return;
 
-  auto& parent_iter = iter_path.top();
+  const auto& parent_iter = iter_path.top();
 
   while ( node != parent_iter )
     prevElement(node);
@@ -598,7 +651,7 @@ std::size_t FListView::getCount()
 
   for (auto&& item : itemlist)
   {
-    auto listitem = static_cast<FListViewItem*>(item);
+    const auto& listitem = static_cast<FListViewItem*>(item);
     n += listitem->getVisibleLines();
   }
 
@@ -614,7 +667,7 @@ fc::text_alignment FListView::getColumnAlignment (int column) const
     return fc::alignLeft;
 
   // Convert column position to address offset (index)
-  std::size_t index = std::size_t(column - 1);
+  const std::size_t index = std::size_t(column - 1);
   return header[index].alignment;
 }
 
@@ -627,7 +680,7 @@ FString FListView::getColumnText (int column) const
     return fc::emptyFString::get();
 
   // Convert column position to address offset (index)
-  std::size_t index = std::size_t(column - 1);
+  const std::size_t index = std::size_t(column - 1);
   return header[index].name;
 }
 
@@ -635,7 +688,7 @@ FString FListView::getColumnText (int column) const
 fc::sorting_type FListView::getColumnSortType (int column) const
 {
   fc::sorting_type type;
-  std::size_t col = std::size_t(column);
+  const std::size_t col = std::size_t(column);
 
   try
   {
@@ -673,7 +726,7 @@ void FListView::setColumnAlignment (int column, fc::text_alignment align)
     return;
 
   // Convert column position to address offset (index)
-  std::size_t index = std::size_t(column - 1);
+  const std::size_t index = std::size_t(column - 1);
   header[index].alignment = align;
 }
 
@@ -690,7 +743,7 @@ void FListView::setColumnText (int column, const FString& label)
 
   if ( ! header[index].fixed_width )
   {
-    int column_width = int(getColumnWidth(label));
+    const int column_width = int(getColumnWidth(label));
 
     if ( column_width > header[index].width )
       header[index].width = column_width;
@@ -707,7 +760,7 @@ void FListView::setColumnSortType (int column, fc::sorting_type type)
   if ( column < 1 || header.empty() || column > int(header.size()) )
     return;
 
-  std::size_t size = std::size_t(column) + 1;
+  const std::size_t size = std::size_t(column) + 1;
 
   if ( sort_type.empty() || sort_type.size() < size )
     sort_type.resize(size);
@@ -816,6 +869,93 @@ FObject::iterator FListView::insert ( const FStringList& cols
   return insert(item, parent_iter);
 }
 
+//----------------------------------------------------------------------
+void FListView::remove (FListViewItem* item)
+{
+  if ( item == nullptr || itemlist.empty() )
+    return;
+
+  auto parent = item->getParent();
+  const auto& current_item = static_cast<FListViewItem*>(*current_iter);
+  const auto& first_item = itemlist.front();
+  auto end_iter = static_cast<FListViewIterator>(itemlist.end());
+  const auto& last_item = *(--end_iter);
+  const bool is_current_line( item == current_item );
+  const bool is_first_line( item == first_item );
+  const bool is_last_line( item == last_item );
+
+  if ( is_current_line )
+  {
+    if ( is_last_line || current_item == itemlist.back() )
+      stepBackward();
+    else
+    {
+      collapseSubtree();
+      stepForward();
+    }
+  }
+
+  if ( is_first_line )
+    ++first_visible_line;
+
+  if ( parent )
+  {
+    if ( this == parent )
+    {
+      itemlist.remove(item);
+      delChild(item);
+      current_iter.getPosition()--;
+    }
+    else
+    {
+      parent->delChild(item);
+      auto parent_item = static_cast<FListViewItem*>(parent);
+      parent_item->visible_lines--;
+      current_iter.getPosition()--;
+
+      if ( ! parent_item->hasChildren() )
+      {
+        parent_item->expandable = false;
+        parent_item->is_expand = false;
+      }
+    }
+  }
+
+  const std::size_t element_count = getCount();
+  recalculateVerticalBar (element_count);
+
+  if ( itemlist.empty() )
+  {
+    current_iter = FListView::null_iter;
+    first_visible_line = FListView::null_iter;
+    last_visible_line = FListView::null_iter;
+    clearList();
+  }
+  else
+  {
+    drawList();
+    drawBorder();
+    drawHeadlines();
+    drawScrollbars();
+  }
+}
+
+//----------------------------------------------------------------------
+void FListView::clear()
+{
+  itemlist.clear();
+  current_iter = FListView::null_iter;
+  first_visible_line = FListView::null_iter;
+  last_visible_line = FListView::null_iter;
+  recalculateVerticalBar (0);
+  first_line_position_before = -1;
+  xoffset = 0;
+  vbar->setMinimum(0);
+  vbar->setValue(0);
+  vbar->hide();
+  clearList();
+}
+
 //----------------------------------------------------------------------
 void FListView::sort()
 {
@@ -868,8 +1008,8 @@ void FListView::sort()
 //----------------------------------------------------------------------
 void FListView::onKeyPress (FKeyEvent* ev)
 {
-  int position_before = current_iter.getPosition();
+  const int position_before = current_iter.getPosition();
-  int xoffset_before = xoffset;
+  const int xoffset_before = xoffset;
   first_line_position_before = first_visible_line.getPosition();
   clicked_expander_pos.setPoint(-1, -1);
   processKeyAction(ev);  // Process the keystrokes
@@ -879,9 +1019,9 @@ void FListView::onKeyPress (FKeyEvent* ev)
 
   if ( ev->isAccepted() )
   {
-    bool draw_vbar( first_line_position_before
+    const bool draw_vbar( first_line_position_before
                        != first_visible_line.getPosition() );
-    bool draw_hbar(xoffset_before != xoffset);
+    const bool draw_hbar(xoffset_before != xoffset);
     updateDrawing (draw_vbar, draw_hbar);
   }
 }
@@ -907,8 +1047,8 @@ void FListView::onMouseDown (FMouseEvent* ev)
       getStatusBar()->drawMessage();
   }
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
   first_line_position_before = first_visible_line.getPosition();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth()) )
@@ -923,12 +1063,12 @@ void FListView::onMouseDown (FMouseEvent* ev)
         return;
 
       int indent = 0;
-      int new_pos = first_visible_line.getPosition() + mouse_y - 2;
+      const int new_pos = first_visible_line.getPosition() + mouse_y - 2;
 
       if ( new_pos < int(getCount()) )
         setRelativePosition (mouse_y - 2);
 
-      const auto item = getCurrentItem();
+      const auto& item = getCurrentItem();
 
       if ( tree_view )
       {
@@ -973,8 +1113,8 @@ void FListView::onMouseUp (FMouseEvent* ev)
 
   if ( ev->getButton() == fc::LeftButton )
   {
-    int mouse_x = ev->getX();
+    const int mouse_x = ev->getX();
-    int mouse_y = ev->getY();
+    const int mouse_y = ev->getY();
 
     if ( mouse_x > 1 && mouse_x < int(getWidth()) )
     {
@@ -988,7 +1128,7 @@ void FListView::onMouseUp (FMouseEvent* ev)
           return;
 
         int indent{0};
-        auto item = getCurrentItem();
+        const auto& item = getCurrentItem();
 
         if ( tree_view )
         {
@@ -1044,14 +1184,14 @@ void FListView::onMouseMove (FMouseEvent* ev)
     return;
   }
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
   first_line_position_before = first_visible_line.getPosition();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
   {
-    int new_pos = first_visible_line.getPosition() + mouse_y - 2;
+    const int new_pos = first_visible_line.getPosition() + mouse_y - 2;
 
     if ( new_pos < int(getCount()) )
       setRelativePosition (mouse_y - 2);
@@ -1083,8 +1223,8 @@ void FListView::onMouseDoubleClick (FMouseEvent* ev)
   if ( ev->getButton() != fc::LeftButton )
     return;
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x > 1 && mouse_x < int(getWidth())
     && mouse_y > 1 && mouse_y < int(getHeight()) )
@@ -1119,7 +1259,7 @@ void FListView::onMouseDoubleClick (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FListView::onTimer (FTimerEvent*)
 {
-  int position_before = current_iter.getPosition();
+  const int position_before = current_iter.getPosition();
   first_line_position_before = first_visible_line.getPosition();
 
   switch ( int(drag_scroll) )
@@ -1158,8 +1298,8 @@ void FListView::onTimer (FTimerEvent*)
 //----------------------------------------------------------------------
 void FListView::onWheel (FWheelEvent* ev)
 {
-  int position_before = current_iter.getPosition();
+  const int position_before = current_iter.getPosition();
-  int pagesize{4};
+  static constexpr int wheel_distance = 4;
   first_line_position_before = first_visible_line.getPosition();
 
   if ( drag_scroll != fc::noScroll )
@@ -1168,11 +1308,11 @@ void FListView::onWheel (FWheelEvent* ev)
   switch ( ev->getWheel() )
   {
     case fc::WheelUp:
-      wheelUp (pagesize);
+      wheelUp (wheel_distance);
       break;
 
     case fc::WheelDown:
-      wheelDown (pagesize);
+      wheelDown (wheel_distance);
       break;
 
     default:
@@ -1218,7 +1358,7 @@ void FListView::onFocusOut (FFocusEvent*)
 //----------------------------------------------------------------------
 void FListView::adjustViewport (int element_count)
 {
-  int height = int(getClientHeight());
+  const int height = int(getClientHeight());
 
   if ( height <= 0 || element_count == 0 )
     return;
@@ -1232,7 +1372,7 @@ void FListView::adjustViewport (int element_count)
 
   if ( first_visible_line.getPosition() > element_count - height  )
   {
-    int difference = first_visible_line.getPosition()
+    const int difference = first_visible_line.getPosition()
                          - (element_count - height);
 
     if ( first_visible_line.getPosition() >= difference )
@@ -1242,7 +1382,7 @@ void FListView::adjustViewport (int element_count)
     }
   }
 
-  int after_last_visible_line = first_visible_line.getPosition()
+  const int after_last_visible_line = first_visible_line.getPosition()
                                     + height;
 
   if ( last_visible_line.getPosition() >= after_last_visible_line )
@@ -1259,13 +1399,13 @@ void FListView::adjustViewport (int element_count)
 void FListView::adjustSize()
 {
   FWidget::adjustSize();
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
-  std::size_t width = getClientWidth();
+  const std::size_t width = getClientWidth();
-  std::size_t height = getClientHeight();
+  const std::size_t height = getClientHeight();
 
   adjustViewport (int(element_count));
 
-  int vmax = ( element_count > height )
+  const int vmax = ( element_count > height )
                    ? int(element_count - height)
                    : 0;
   vbar->setMaximum (vmax);
@@ -1274,7 +1414,7 @@ void FListView::adjustSize()
   vbar->setHeight (height, false);
   vbar->resize();
 
-  int hmax = ( max_line_width > width )
+  const int hmax = ( max_line_width > width )
                    ? int(max_line_width - width)
                    : 0;
   hbar->setMaximum (hmax);
@@ -1340,7 +1480,7 @@ inline void FListView::mapKeyFunctions()
 //----------------------------------------------------------------------
 void FListView::processKeyAction (FKeyEvent* ev)
 {
-  int idx = int(ev->key());
+  const int idx = int(ev->key());
 
   if ( key_map.find(idx) != key_map.end() )
   {
@@ -1371,7 +1511,7 @@ void FListView::sort (Compare cmp)
 }
 
 //----------------------------------------------------------------------
-std::size_t FListView::getAlignOffset ( fc::text_alignment align
+std::size_t FListView::getAlignOffset ( const fc::text_alignment align
                                       , std::size_t column_width
                                       , std::size_t width )
 {
@@ -1444,7 +1584,7 @@ void FListView::draw()
 //----------------------------------------------------------------------
 void FListView::drawBorder()
 {
-  FRect box(FPoint(1, 1), getSize());
+  const FRect box(FPoint(1, 1), getSize());
   finalcut::drawListBorder (this, box);
 }
 
@@ -1502,15 +1642,15 @@ void FListView::drawList()
     return;
 
   uInt y{0};
-  uInt page_height = uInt(getHeight()) - 2;
+  const uInt page_height = uInt(getHeight()) - 2;
   auto iter = first_visible_line;
 
   while ( iter != itemlist.end() && y < page_height )
   {
-    bool is_current_line( iter == current_iter );
+    const bool is_current_line( iter == current_iter );
-    const auto item = static_cast<FListViewItem*>(*iter);
+    const auto& item = static_cast<FListViewItem*>(*iter);
-    int tree_offset = ( tree_view ) ? int(item->getDepth() << 1) + 1 : 0;
+    const int tree_offset = ( tree_view ) ? int(item->getDepth() << 1) + 1 : 0;
-    int checkbox_offset = ( item->isCheckable() ) ? 1 : 0;
+    const int checkbox_offset = ( item->isCheckable() ) ? 1 : 0;
     print() << FPoint(2, 2 + int(y));
 
     // Draw one FListViewItem
@@ -1556,7 +1696,7 @@ void FListView::drawListLine ( const FListViewItem* item
   setLineAttributes (is_current, is_focus);
 
   // Print the entry
-  std::size_t indent = item->getDepth() << 1;  // indent = 2 * depth
+  const std::size_t indent = item->getDepth() << 1;  // indent = 2 * depth
   FString line(getLinePrefix (item, indent));
 
   // Print columns
@@ -1567,12 +1707,12 @@ void FListView::drawListLine ( const FListViewItem* item
       static constexpr std::size_t ellipsis_length = 2;
       const auto& text = item->column_list[col];
       std::size_t width = std::size_t(header[col].width);
-      std::size_t column_width = getColumnWidth(text);
+      const std::size_t column_width = getColumnWidth(text);
       // Increment the value of col for the column position
       // and the next iteration
       col++;
-      fc::text_alignment align = getColumnAlignment(int(col));
+      const fc::text_alignment align = getColumnAlignment(int(col));
-      std::size_t align_offset = getAlignOffset (align, column_width, width);
+      const std::size_t align_offset = getAlignOffset (align, column_width, width);
 
       if ( tree_view && col == 1 )
       {
@@ -1597,7 +1737,7 @@ void FListView::drawListLine ( const FListViewItem* item
       else if ( align == fc::alignRight )
       {
         // Ellipse right align text
-        std::size_t first = getColumnWidth(text) + 1 - width;
+        const std::size_t first = getColumnWidth(text) + 1 - width;
         line += FString (L"..");
         line += getColumnSubString (text, first, width - ellipsis_length);
         line += L' ';
@@ -1611,9 +1751,9 @@ void FListView::drawListLine ( const FListViewItem* item
     }
   }
 
-  std::size_t width = getWidth() - nf_offset - 2;
+  const std::size_t width = getWidth() - nf_offset - 2;
   line = getColumnSubString ( line, std::size_t(xoffset) + 1, width );
-  std::size_t len = line.getLength();
+  const std::size_t len = line.getLength();
   std::size_t char_width{0};
 
   for (std::size_t i{0}; i < len; i++)
@@ -1626,6 +1766,28 @@ void FListView::drawListLine ( const FListViewItem* item
     print (' ');
 }
 
+//----------------------------------------------------------------------
+void FListView::clearList()
+{
+  // Clear list from terminal screen
+
+  const auto& wc = getFWidgetColors();
+  setColor (wc.list_fg, wc.list_bg);
+  const std::size_t size = getWidth() - 2;
+  drawBorder();
+  drawHeadlines();
+
+  if ( size == 0 )
+    return;
+
+  for (int y{0}; y < int(getHeight()) - 2; y++)
+  {
+    print() << FPoint(2, 2 + y) << FString(size, L' ');
+  }
+
+  drawScrollbars();
+}
+
 //----------------------------------------------------------------------
 inline void FListView::setLineAttributes ( bool is_current
                                          , bool is_focus )
@@ -1757,12 +1919,12 @@ void FListView::drawHeadlineLabel (const headerItems::const_iterator& iter)
   static constexpr std::size_t leading_space = 1;
   const auto& text = iter->name;
   FString txt(" " + text);
-  std::size_t width = std::size_t(iter->width);
+  const std::size_t width = std::size_t(iter->width);
   std::size_t column_width = getColumnWidth(txt);
-  std::size_t column_max = leading_space + width;
+  const std::size_t column_max = leading_space + width;
-  headerItems::const_iterator first = header.begin();
+  const headerItems::const_iterator first = header.begin();
-  int column = int(std::distance(first, iter)) + 1;
+  const int column = int(std::distance(first, iter)) + 1;
-  bool has_sort_indicator( sort_column == column && ! hide_sort_indicator );
+  const bool has_sort_indicator( sort_column == column && ! hide_sort_indicator );
   const auto& wc = getFWidgetColors();
 
   if ( isEnabled() )
@@ -1844,7 +2006,7 @@ void FListView::drawBufferedHeadline()
 
     for (auto&& tc : FTermBuffer(first, last))
     {
-      uInt8 char_width = tc.attr.bit.char_width;
+      const uInt8 char_width = tc.attr.bit.char_width;
 
       if ( column_width + char_width > getClientWidth() )
       {
@@ -1891,7 +2053,7 @@ void FListView::drawColumnEllipsis ( const headerItems::const_iterator& iter
 {
   // Print label ellipsis
   static constexpr int ellipsis_length = 2;
-  int width = iter->width;
+  const int width = iter->width;
   const auto& wc = getFWidgetColors();
 
   headerline << ' '
@@ -1929,15 +2091,15 @@ std::size_t FListView::determineLineWidth (FListViewItem* item)
   static constexpr std::size_t padding_space = 1;
   std::size_t line_width = padding_space;  // leading space
   std::size_t column_idx{0};
-  std::size_t entries = std::size_t(item->column_list.size());
+  const auto entries = std::size_t(item->column_list.size());
 
   if ( hasCheckableItems() )
     line_width += checkbox_space;
 
   for (auto&& header_item : header)
   {
-    std::size_t width = std::size_t(header_item.width);
+    const std::size_t width = std::size_t(header_item.width);
-    bool fixed_width = header_item.fixed_width;
+    const bool fixed_width = header_item.fixed_width;
 
     if ( ! fixed_width )
     {
@@ -1980,7 +2142,7 @@ inline void FListView::afterInsertion()
   // Sort list by a column (only if activated)
   sort();
 
-  std::size_t element_count = getCount();
+  const std::size_t element_count = getCount();
   recalculateVerticalBar (element_count);
 }
 
@@ -1994,7 +2156,7 @@ void FListView::recalculateHorizontalBar (std::size_t len)
 
   if ( len >= getWidth() - nf_offset - 3 )
   {
-    int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
+    const int hmax = ( max_line_width > getWidth() - nf_offset - 4 )
                      ? int(max_line_width - getWidth() + nf_offset + 4)
                      : 0;
     hbar->setMaximum (hmax);
@@ -2014,7 +2176,7 @@ void FListView::recalculateHorizontalBar (std::size_t len)
 //----------------------------------------------------------------------
 void FListView::recalculateVerticalBar (std::size_t element_count)
 {
-  int vmax = ( element_count + 2 > getHeight() )
+  const int vmax = ( element_count + 2 > getHeight() )
                    ? int(element_count - getHeight() + 2)
                    : 0;
   vbar->setMaximum (vmax);
@@ -2034,14 +2196,14 @@ void FListView::recalculateVerticalBar (std::size_t element_count)
 void FListView::mouseHeaderClicked()
 {
   int column{1};
-  int checkbox_offset = ( hasCheckableItems() ) ? checkbox_space : 0;
+  const int checkbox_offset = ( hasCheckableItems() ) ? checkbox_space : 0;
+  const int header_pos = clicked_header_pos.getX() + xoffset;
   int header_start = 2 + checkbox_offset;
-  int header_pos = clicked_header_pos.getX() + xoffset;
 
   for (auto&& item : header)
   {
     static constexpr int leading_space = 1;
-    bool has_sort_indicator( column == sort_column );
+    const bool has_sort_indicator( column == sort_column );
     int click_width = int(getColumnWidth(item.name));
 
     if ( has_sort_indicator )
@@ -2086,9 +2248,9 @@ void FListView::wheelUp (int pagesize)
   else
   {
     // Save relative position from the first line
-    int ry = current_iter.getPosition() - first_visible_line.getPosition();
+    const int ry = current_iter.getPosition() - first_visible_line.getPosition();
     // Save difference from top
-    int difference = first_visible_line.getPosition();
+    const int difference = first_visible_line.getPosition();
     first_visible_line -= difference;
     last_visible_line -= difference;
     setRelativePosition(ry);
@@ -2101,7 +2263,7 @@ void FListView::wheelDown (int pagesize)
   if ( itemlist.empty() )
     return;
 
-  int element_count = int(getCount());
+  const int element_count = int(getCount());
 
   if ( current_iter.getPosition() + 1 == element_count )
     return;
@@ -2115,9 +2277,9 @@ void FListView::wheelDown (int pagesize)
   else
   {
     // Save relative position from the first line
-    int ry = current_iter.getPosition() - first_visible_line.getPosition();
+    const int ry = current_iter.getPosition() - first_visible_line.getPosition();
     // Save difference from bottom
-    int differenz = element_count - last_visible_line.getPosition() - 1;
+    const int differenz = element_count - last_visible_line.getPosition() - 1;
     first_visible_line += differenz;
     last_visible_line += differenz;
     setRelativePosition(ry);
@@ -2140,7 +2302,7 @@ bool FListView::dragScrollUp (int position_before)
 //----------------------------------------------------------------------
 bool FListView::dragScrollDown (int position_before)
 {
-  int element_count = int(getCount());
+  const int element_count = int(getCount());
 
   if ( position_before + 1 == element_count )
   {
@@ -2265,20 +2427,17 @@ inline void FListView::toggleCheckbox()
 //----------------------------------------------------------------------
 inline void FListView::collapseAndScrollLeft()
 {
-  if ( itemlist.empty() )
+  const int position_before = current_iter.getPosition();
-    return;
-
-  int position_before = current_iter.getPosition();
   auto item = getCurrentItem();
 
-  if ( xoffset == 0 )
+  if ( xoffset == 0 && item && ! itemlist.empty() )
   {
     if ( tree_view && item->isExpandable() && item->isExpand() )
     {
       // Collapse element
       item->collapse();
       adjustSize();
-      std::size_t  element_count = getCount();
+      const std::size_t  element_count = getCount();
       recalculateVerticalBar (element_count);
       // Force vertical scrollbar redraw
       first_line_position_before = -1;
@@ -2286,7 +2445,7 @@ inline void FListView::collapseAndScrollLeft()
     else if ( item->hasParent() )
     {
       // Jump to parent element
-      auto parent = item->getParent();
+      const auto& parent = item->getParent();
 
       if ( parent->isInstanceOf("FListViewItem") )
       {
@@ -2294,7 +2453,7 @@ inline void FListView::collapseAndScrollLeft()
 
         if ( current_iter.getPosition() < first_line_position_before )
         {
-          int difference = position_before - current_iter.getPosition();
+          const int difference = position_before - current_iter.getPosition();
 
           if ( first_visible_line.getPosition() - difference >= 0 )
           {
@@ -2303,7 +2462,7 @@ inline void FListView::collapseAndScrollLeft()
           }
           else
           {
-            int d = first_visible_line.getPosition();
+            const int d = first_visible_line.getPosition();
             first_visible_line -= d;
             last_visible_line -= d;
           }
@@ -2322,13 +2481,11 @@ inline void FListView::collapseAndScrollLeft()
 //----------------------------------------------------------------------
 inline void FListView::expandAndScrollRight()
 {
-  if ( itemlist.empty() )
+  const int xoffset_end = int(max_line_width) - int(getClientWidth());
-    return;
-
-  int xoffset_end = int(max_line_width) - int(getClientWidth());
   auto item = getCurrentItem();
 
-  if ( tree_view && item->isExpandable() && ! item->isExpand() )
+  if ( tree_view && ! itemlist.empty() && item
+    && item->isExpandable() && ! item->isExpand() )
   {
     // Expand element
     item->expand();
@@ -2354,7 +2511,7 @@ inline void FListView::firstPos()
     return;
 
   current_iter -= current_iter.getPosition();
-  int difference = first_visible_line.getPosition();
+  const int difference = first_visible_line.getPosition();
   first_visible_line -= difference;
   last_visible_line -= difference;
 }
@@ -2365,9 +2522,9 @@ inline void FListView::lastPos()
   if ( itemlist.empty() )
     return;
 
-  int element_count = int(getCount());
+  const int element_count = int(getCount());
   current_iter += element_count - current_iter.getPosition() - 1;
-  int difference = element_count - last_visible_line.getPosition() - 1;
+  const int difference = element_count - last_visible_line.getPosition() - 1;
   first_visible_line += difference;
   last_visible_line += difference;
 }
@@ -2460,7 +2617,7 @@ void FListView::stepForward (int distance)
   if ( itemlist.empty() )
     return;
 
-  int element_count = int(getCount());
+  const int element_count = int(getCount());
 
   if ( current_iter.getPosition() + 1 == element_count )
     return;
@@ -2483,7 +2640,7 @@ void FListView::stepForward (int distance)
     }
     else
     {
-      int differenz = element_count - last_visible_line.getPosition() - 1;
+      const int differenz = element_count - last_visible_line.getPosition() - 1;
       first_visible_line += differenz;
       last_visible_line += differenz;
     }
@@ -2514,7 +2671,7 @@ void FListView::stepBackward (int distance)
     }
     else
     {
-      int difference = first_visible_line.getPosition();
+      const int difference = first_visible_line.getPosition();
       first_visible_line -= difference;
       last_visible_line -= difference;
     }
@@ -2524,7 +2681,7 @@ void FListView::stepBackward (int distance)
 //----------------------------------------------------------------------
 void FListView::scrollToX (int x)
 {
-  int xoffset_end = int(max_line_width) - int(getClientWidth());
+  const int xoffset_end = int(max_line_width) - int(getClientWidth());
 
   if ( xoffset == x )
     return;
@@ -2541,14 +2698,14 @@ void FListView::scrollToX (int x)
 //----------------------------------------------------------------------
 void FListView::scrollToY (int y)
 {
-  int pagesize = int(getClientHeight()) - 1;
+  const int pagesize = int(getClientHeight()) - 1;
-  int element_count = int(getCount());
+  const int element_count = int(getCount());
 
   if ( first_visible_line.getPosition() == y )
     return;
 
   // Save relative position from the top line
-  int ry = current_iter.getPosition() - first_visible_line.getPosition();
+  const int ry = current_iter.getPosition() - first_visible_line.getPosition();
 
   if ( y + pagesize <= element_count )
   {
@@ -2560,7 +2717,7 @@ void FListView::scrollToY (int y)
   }
   else
   {
-    int differenz = element_count - last_visible_line.getPosition() - 1;
+    const int differenz = element_count - last_visible_line.getPosition() - 1;
     current_iter += differenz;
     first_visible_line += differenz;
     last_visible_line += differenz;
@@ -2590,8 +2747,8 @@ void FListView::scrollBy (int dx, int dy)
 void FListView::cb_VBarChange (FWidget*, FDataPtr)
 {
   FScrollbar::sType scrollType = vbar->getScrollType();
+  static constexpr int wheel_distance = 4;
   int distance{1};
-  int pagesize{4};
   first_line_position_before = first_visible_line.getPosition();
 
   switch ( scrollType )
@@ -2621,11 +2778,11 @@ void FListView::cb_VBarChange (FWidget*, FDataPtr)
     }
 
     case FScrollbar::scrollWheelUp:
-    wheelUp (pagesize);
+    wheelUp (wheel_distance);
     break;
 
     case FScrollbar::scrollWheelDown:
-    wheelDown (pagesize);
+    wheelDown (wheel_distance);
     break;
   }
 
@@ -2649,9 +2806,9 @@ void FListView::cb_VBarChange (FWidget*, FDataPtr)
 void FListView::cb_HBarChange (FWidget*, FDataPtr)
 {
   FScrollbar::sType scrollType = hbar->getScrollType();
-  int distance{1}
+  static constexpr int wheel_distance = 4;
-    , pagesize{4}
+  int distance{1};
-    , xoffset_before = xoffset;
+  const int xoffset_before = xoffset;
 
   switch ( scrollType )
   {
@@ -2674,17 +2831,17 @@ void FListView::cb_HBarChange (FWidget*, FDataPtr)
 
     case FScrollbar::scrollJump:
     {
-      int value = hbar->getValue();
+      const int value = hbar->getValue();
       scrollToX(value);
       break;
     }
 
     case FScrollbar::scrollWheelUp:
-      scrollBy (-pagesize, 0);
+      scrollBy (-wheel_distance, 0);
       break;
 
     case FScrollbar::scrollWheelDown:
-      scrollBy (pagesize, 0);
+      scrollBy (wheel_distance, 0);
       break;
   }
 

src/fmenu.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -60,7 +60,7 @@ FMenu::FMenu (const FString& txt, FWidget* parent)
 //----------------------------------------------------------------------
 FMenu::~FMenu()  // destructor
 {
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
 
   if ( ! fapp->isQuit() )
     switchToPrevWindow(this);  // Switch to previous window
@@ -321,7 +321,7 @@ void FMenu::onMouseMove (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FMenu::cb_menuitem_toggled (FWidget* widget, FDataPtr)
 {
-  auto m_item = static_cast<FMenuItem*>(widget);
+  const auto& m_item = static_cast<FMenuItem*>(widget);
 
   if ( ! has_checkable_items )
     return;
@@ -374,7 +374,7 @@ bool FMenu::isRadioMenuItem (const FWidget* w) const
 //----------------------------------------------------------------------
 bool FMenu::isSubMenu() const
 {
-  auto super = getSuperMenu();
+  const auto& super = getSuperMenu();
 
   if ( super && isMenu(super) )
     return true;
@@ -385,7 +385,7 @@ bool FMenu::isSubMenu() const
 //----------------------------------------------------------------------
 bool FMenu::isDialogMenu() const
 {
-  auto super = getSuperMenu();
+  const auto& super = getSuperMenu();
   return ( super ) ? super->isDialogWidget() : false;
 }
 
@@ -415,7 +415,7 @@ bool FMenu::isMouseOverSubMenu (const FPoint& termpos)
 //----------------------------------------------------------------------
 bool FMenu::isMouseOverSuperMenu (const FPoint& termpos)
 {
-  const auto smenu = superMenuAt (termpos);
+  const auto& smenu = superMenuAt (termpos);
 
   if ( smenu )
     return true;
@@ -481,8 +481,8 @@ void FMenu::calculateDimensions()
   for (auto&& item : getItemList())
   {
     std::size_t item_width = item->getTextWidth() + 2;
-    FKey        accel_key  = item->accel_key;
+    const FKey  accel_key  = item->accel_key;
-    bool        has_menu   = item->hasMenu();
+    const bool  has_menu   = item->hasMenu();
 
     if ( has_menu )
     {
@@ -490,7 +490,7 @@ void FMenu::calculateDimensions()
     }
     else if ( accel_key )
     {
-      std::size_t accel_len = getKeyName(accel_key).getLength();
+      const std::size_t accel_len = getKeyName(accel_key).getLength();
       item_width += accel_len + 2;
     }
 
@@ -501,14 +501,14 @@ void FMenu::calculateDimensions()
       max_item_width = item_width;
   }
 
-  int adjust_X = adjustX(getX());
+  const int adjust_X = adjustX(getX());
 
   // set widget geometry
   setGeometry ( FPoint(adjust_X, getY())
               , FSize(max_item_width + 2, getCount() + 2) );
 
   // set geometry of all items
-  int item_X = 1;
+  const int item_X = 1;
   int item_Y = 1;
 
   for (auto&& item : getItemList())
@@ -517,8 +517,8 @@ void FMenu::calculateDimensions()
 
     if ( item->hasMenu() )
     {
-      int menu_X = getTermX() + int(max_item_width) + 1;
+      const int menu_X = getTermX() + int(max_item_width) + 1;
-      int menu_Y = item->getTermY() - 2;
+      const int menu_Y = item->getTermY() - 2;
       // set sub-menu position
       item->getMenu()->setPos (FPoint(menu_X, menu_Y), false);
     }
@@ -537,7 +537,7 @@ void FMenu::adjustItems()
       auto menu = item->getMenu();
       int menu_X = getTermX() + int(max_item_width) + 1;
       menu_X = menu->adjustX(menu_X);
-      int menu_Y = item->getTermY() - 2;
+      const int menu_Y = item->getTermY() - 2;
 
       // set sub-menu position
       menu->setPos (FPoint(menu_X, menu_Y));
@@ -658,11 +658,11 @@ bool FMenu::mouseDownOverList (FPoint mouse_pos)
 
   for (auto&& item : getItemList())
   {
-    int x1 = item->getX()
+    const int x1 = item->getX();
-      , x2 = item->getX() + int(item->getWidth())
+    const int x2 = item->getX() + int(item->getWidth());
-      , y  = item->getY()
+    const int y  = item->getY();
-      , mouse_x = mouse_pos.getX()
+    const int mouse_x = mouse_pos.getX();
-      , mouse_y = mouse_pos.getY();
+    const int mouse_y = mouse_pos.getY();
 
     if ( mouse_x >= x1
       && mouse_x < x2
@@ -729,7 +729,8 @@ void FMenu::mouseDownSelection (FMenuItem* m_item, bool& focus_changed)
 
   if ( m_item->hasMenu() )
   {
-    auto sub_menu = m_item->getMenu();
+    const auto& sub_menu = m_item->getMenu();
+
     if ( ! sub_menu->isShown() )
       shown_sub_menu = sub_menu;
   }
@@ -742,11 +743,11 @@ bool FMenu::mouseUpOverList (FPoint mouse_pos)
 
   for (auto&& item : getItemList())
   {
-    int x1 = item->getX()
+    const int x1 = item->getX();
-      , x2 = item->getX() + int(item->getWidth())
+    const int x2 = item->getX() + int(item->getWidth());
-      , y  = item->getY()
+    const int y  = item->getY();
-      , mouse_x = mouse_pos.getX()
+    const int mouse_x = mouse_pos.getX();
-      , mouse_y = mouse_pos.getY();
+    const int mouse_y = mouse_pos.getY();
 
     if ( item->isSelected()
       && mouse_x >= x1
@@ -797,11 +798,11 @@ void FMenu::mouseMoveOverList (FPoint mouse_pos, mouseStates& ms)
 
   for (auto&& item : getItemList())
   {
-    int x1 = item->getX()
+    const int x1 = item->getX();
-      , x2 = item->getX() + int(item->getWidth())
+    const int x2 = item->getX() + int(item->getWidth());
-      , y  = item->getY()
+    const int y  = item->getY();
-      , mouse_x = mouse_pos.getX()
+    const int mouse_x = mouse_pos.getX();
-      , mouse_y = mouse_pos.getY();
+    const int mouse_y = mouse_pos.getY();
 
     if ( mouse_x >= x1 && mouse_x < x2 && mouse_y == y )
       mouseMoveSelection (item, ms);
@@ -834,7 +835,7 @@ void FMenu::mouseMoveSelection (FMenuItem* m_item, mouseStates& ms)
   // Sub menu handling
   if ( m_item->hasMenu() )
   {
-    auto sub_menu = m_item->getMenu();
+    const auto& sub_menu = m_item->getMenu();
 
     if ( ! sub_menu->isShown() )
       shown_sub_menu = sub_menu;
@@ -900,7 +901,7 @@ void FMenu::passEventToSubMenu (FMouseEvent*& ev)
 
   const auto& t = ev->getTermPos();
   const auto& p = opened_sub_menu->termToWidgetPos(t);
-  int b = ev->getButton();
+  const int b = ev->getButton();
 
   try
   {
@@ -921,10 +922,10 @@ void FMenu::passEventToSuperMenu (FMouseEvent*& ev)
 {
   // Mouse event handover to super-menu
 
-  const auto& smenu = superMenuAt (ev->getTermPos());
+  auto smenu = superMenuAt (ev->getTermPos());
   const auto& t = ev->getTermPos();
   const auto& p = smenu->termToWidgetPos(t);
-  int b = ev->getButton();
+  const int b = ev->getButton();
 
   try
   {
@@ -945,10 +946,10 @@ void FMenu::passEventToMenuBar (FMouseEvent*& ev)
 {
   // Mouse event handover to the menu bar
 
-  const auto& menu_bar = getMenuBar();
+  auto menu_bar = getMenuBar();
   const auto& t = ev->getTermPos();
   const auto& p = menu_bar->termToWidgetPos(t);
-  int b = ev->getButton();
+  const int b = ev->getButton();
 
   try
   {
@@ -970,7 +971,7 @@ bool FMenu::containsMenuStructure (int x, int y)
 {
   // Check mouse click position for item, menu and all sub menus
 
-  auto si = getSelectedItem();
+  const auto& si = getSelectedItem();
 
   if ( getTermGeometry().contains(x, y) )
     return true;
@@ -998,7 +999,7 @@ FMenu* FMenu::superMenuAt (int x, int y)
       return static_cast<FMenu*>(super);
     else
     {
-      auto smenu = static_cast<FMenu*>(getSuperMenu());
+      const auto& smenu = static_cast<FMenu*>(getSuperMenu());
 
       if ( smenu )
         return smenu->superMenuAt(x, y);
@@ -1011,7 +1012,7 @@ FMenu* FMenu::superMenuAt (int x, int y)
 //----------------------------------------------------------------------
 bool FMenu::selectNextItem()
 {
-  auto list = getItemList();
+  const auto& list = getItemList();
   auto iter = list.begin();
 
   while ( iter != list.end() )
@@ -1059,7 +1060,7 @@ bool FMenu::selectNextItem()
 //----------------------------------------------------------------------
 bool FMenu::selectPrevItem()
 {
-  auto list = getItemList();
+  const auto& list = getItemList();
   auto iter = list.end();
 
   do
@@ -1123,7 +1124,7 @@ bool FMenu::hotkeyMenu (FKeyEvent* ev)
     {
       bool found{false};
       FKey hotkey = item->getHotkey();
-      FKey key = ev->key();
+      const FKey key = ev->key();
 
       if ( hotkey > 0xff00 && hotkey < 0xff5f )  // full-width character
         hotkey -= 0xfee0;
@@ -1245,9 +1246,9 @@ inline void FMenu::drawMenuLine (FMenuItem* m_item, int y)
   FString txt(m_item->getText());
   menuText txtdata{};
   std::size_t column_width = getColumnWidth(txt);
-  FKey accel_key   = m_item->accel_key;
+  const FKey accel_key   = m_item->accel_key;
-  bool is_enabled  = m_item->isEnabled();
+  const bool is_enabled  = m_item->isEnabled();
-  bool is_selected = m_item->isSelected();
+  const bool is_selected = m_item->isSelected();
 
   // Set screen position and attributes
   setLineAttributes (m_item, y);
@@ -1289,9 +1290,9 @@ inline void FMenu::drawMenuLine (FMenuItem* m_item, int y)
 //----------------------------------------------------------------------
 inline void FMenu::drawCheckMarkPrefix (FMenuItem* m_item)
 {
-  bool is_checked   = m_item->isChecked();
+  const bool is_checked   = m_item->isChecked();
-  bool is_checkable = m_item->checkable;
+  const bool is_checkable = m_item->checkable;
-  bool is_radio_btn = m_item->radio_button;
+  const bool is_radio_btn = m_item->radio_button;
 
   if ( ! has_checkable_items )
     return;
@@ -1373,8 +1374,8 @@ inline void FMenu::drawMenuText (menuText& data)
 //----------------------------------------------------------------------
 inline void FMenu::drawSubMenuIndicator (std::size_t& startpos)
 {
-  std::size_t c = ( has_checkable_items ) ? 1 : 0;
+  const std::size_t c = ( has_checkable_items ) ? 1 : 0;
-  std::size_t len = max_item_width - (startpos + c + 3);
+  const std::size_t len = max_item_width - (startpos + c + 3);
 
   if ( len > 0 )
   {
@@ -1389,15 +1390,15 @@ inline void FMenu::drawSubMenuIndicator (std::size_t& startpos)
 //----------------------------------------------------------------------
 inline void FMenu::drawAcceleratorKey (std::size_t& startpos, FKey accel_key)
 {
-  FString accel_name (getKeyName(accel_key));
+  const FString accel_name (getKeyName(accel_key));
-  std::size_t c = ( has_checkable_items ) ? 1 : 0;
+  const std::size_t c = ( has_checkable_items ) ? 1 : 0;
-  std::size_t accel_len = accel_name.getLength();
+  const std::size_t accel_len = accel_name.getLength();
-  std::size_t len = max_item_width - (startpos + accel_len + c + 2);
+  const std::size_t len = max_item_width - (startpos + accel_len + c + 2);
 
   if ( len > 0 )
   {
     // Print filling blank spaces + accelerator key name
-    FString spaces (len, L' ');
+    const FString spaces (len, L' ');
     print (spaces + accel_name);
     startpos = max_item_width - (c + 2);
   }
@@ -1406,7 +1407,7 @@ inline void FMenu::drawAcceleratorKey (std::size_t& startpos, FKey accel_key)
 //----------------------------------------------------------------------
 inline void FMenu::drawTrailingSpaces (std::size_t startpos)
 {
-  std::size_t c = ( has_checkable_items ) ? 1 : 0;
+  const std::size_t c = ( has_checkable_items ) ? 1 : 0;
 
   // Print trailing blank space
   for (std::size_t i = startpos + c; i < max_item_width - 1; i++)
@@ -1416,8 +1417,8 @@ inline void FMenu::drawTrailingSpaces (std::size_t startpos)
 //----------------------------------------------------------------------
 inline void FMenu::setLineAttributes (FMenuItem* m_item, int y)
 {
-  bool is_enabled  = m_item->isEnabled();
+  const bool is_enabled  = m_item->isEnabled();
-  bool is_selected = m_item->isSelected();
+  const bool is_selected = m_item->isSelected();
   const auto& wc = getFWidgetColors();
 
   if ( is_enabled )
@@ -1455,8 +1456,8 @@ inline void FMenu::setLineAttributes (FMenuItem* m_item, int y)
 //----------------------------------------------------------------------
 inline void FMenu::setCursorToHotkeyPosition (FMenuItem* m_item)
 {
-  bool is_checkable = m_item->checkable;
+  const bool is_checkable = m_item->checkable;
-  bool is_selected  = m_item->isSelected();
+  const bool is_selected  = m_item->isSelected();
 
   if ( hotkeypos == NOT_SET )
   {
@@ -1474,7 +1475,7 @@ inline void FMenu::setCursorToHotkeyPosition (FMenuItem* m_item)
     if ( is_selected )
     {
       // set cursor to the hotkey position
-      auto x = getColumnWidth (m_item->getText(), hotkeypos);
+      const auto x = getColumnWidth (m_item->getText(), hotkeypos);
 
       if ( is_checkable )
         m_item->setCursorPos (FPoint(3 + int(x), 1));
@@ -1561,7 +1562,7 @@ inline void FMenu::closeMenu()
   }
   else
   {
-    auto super = getSuperMenu();
+    const auto& super = getSuperMenu();
     hideSuperMenus();
 
     if ( getStatusBar() )

src/fmenubar.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -931,7 +931,7 @@ void FMenuBar::passEventToMenu (const FMouseEvent*& ev)
     return;
 
   // Mouse event handover to the menu
-  const auto& menu = getSelectedItem()->getMenu();
+  auto menu = getSelectedItem()->getMenu();
   const auto& menu_geometry = menu->getTermGeometry();
 
   if ( menu->getCount() > 0
@@ -939,7 +939,7 @@ void FMenuBar::passEventToMenu (const FMouseEvent*& ev)
   {
     const auto& t = ev->getTermPos();
     const auto& p = menu->termToWidgetPos(t);
-    int b = ev->getButton();
+    const int b = ev->getButton();
 
     try
     {

src/fmenuitem.cpp

@@ -185,7 +185,7 @@ void FMenuItem::setText (const FString& txt)
 //----------------------------------------------------------------------
 void FMenuItem::addAccelerator (FKey key, FWidget* obj)
 {
-  auto root = getRootWidget();
+  const auto& root = getRootWidget();
   FAccelerator accel = { key, obj };
 
   if ( root )
@@ -475,8 +475,8 @@ bool FMenuItem::isMenu (FWidget* w) const
   if ( ! w )
     return false;
 
-  bool m1 = w->isInstanceOf("FMenu");
+  const bool m1 = w->isInstanceOf("FMenu");
-  bool m2 = w->isInstanceOf("FDialogListMenu");
+  const bool m2 = w->isInstanceOf("FDialogListMenu");
   return bool( m1 || m2 );
 }
 
@@ -583,7 +583,7 @@ void FMenuItem::createDialogList (FMenu* winmenu)
 
   if ( getDialogList() && ! getDialogList()->empty() )
   {
-    auto first = getDialogList()->begin();
+    const auto& first = getDialogList()->begin();
     auto iter = first;
 
     while ( iter != getDialogList()->end() && *iter )
@@ -593,7 +593,7 @@ void FMenuItem::createDialogList (FMenu* winmenu)
       if ( win )
       {
         FMenuItem* win_item{};
-        uInt32 n = uInt32(std::distance(first, iter));
+        const uInt32 n = uInt32(std::distance(first, iter));
         // get the dialog title
         const auto& name = win->getText();
 
@@ -644,7 +644,7 @@ void FMenuItem::passMouseEvent ( T widget, FMouseEvent* ev
 
   const auto& t = ev->getTermPos();
   const auto& p2 = widget->termToWidgetPos(t);
-  int b = ev->getButton();
+  const int b = ev->getButton();
   std::shared_ptr<FMouseEvent> _ev;
 
   try
@@ -694,7 +694,7 @@ void FMenuItem::cb_switchToDialog (FWidget*, FDataPtr data)
 void FMenuItem::cb_destroyDialog (FWidget* widget, FDataPtr)
 {
   auto win = static_cast<FDialog*>(widget);
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
 
   if ( win && fapp )
   {

src/fmessagebox.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -137,7 +137,7 @@ void FMessageBox::setHeadline (const FString& headline)
   for (uInt n{0}; n < num_buttons; n++)
     button[n]->setY (int(getHeight()) - 4, false);
 
-  std::size_t column_width = getColumnWidth(headline_text);
+  const std::size_t column_width = getColumnWidth(headline_text);
 
   if ( column_width > max_line_width )
     max_line_width = column_width;
@@ -166,7 +166,7 @@ void FMessageBox::adjustSize()
 {
   std::size_t max_width{};
   std::size_t max_height{};
-  auto root_widget = getRootWidget();
+  const auto& root_widget = getRootWidget();
 
   if ( root_widget )
   {
@@ -180,8 +180,8 @@ void FMessageBox::adjustSize()
     max_height = 24;
   }
 
-  int x = 1 + int((max_width - getWidth()) / 2);
+  const int x = 1 + int((max_width - getWidth()) / 2);
-  int y = 1 + int((max_height - getHeight()) / 3);
+  const int y = 1 + int((max_height - getHeight()) / 3);
   setPos(FPoint(x, y), false);
   FDialog::adjustSize();
 }
@@ -189,7 +189,7 @@ void FMessageBox::adjustSize()
 //----------------------------------------------------------------------
 void FMessageBox::cb_processClick (FWidget*, FDataPtr data)
 {
-  int reply = *(static_cast<int*>(data));
+  const int reply = *(static_cast<int*>(data));
   done (reply);
 }
 
@@ -321,7 +321,7 @@ void FMessageBox::calculateDimensions()
 
   for (auto&& line : text_components)
   {
-    std::size_t column_width = getColumnWidth(line);
+    const std::size_t column_width = getColumnWidth(line);
 
     if ( column_width > max_line_width )
       max_line_width = column_width;
@@ -345,7 +345,7 @@ void FMessageBox::draw()
   int head_offset{0};
   int center_x{0};
   // center the whole block
-  int msg_x = int((getWidth() - max_line_width) / 2);
+  const int msg_x = int((getWidth() - max_line_width) / 2);
 
   if ( isMonochron() )
     setReverse(true);
@@ -353,7 +353,7 @@ void FMessageBox::draw()
   if ( ! headline_text.isEmpty() )
   {
     setColor(emphasis_color, getBackgroundColor());
-    std::size_t headline_width = getColumnWidth(headline_text);
+    const std::size_t headline_width = getColumnWidth(headline_text);
 
     if ( center_text )  // center one line
       center_x = int((max_line_width - headline_width) / 2);
@@ -366,7 +366,7 @@ void FMessageBox::draw()
 
   for (auto&& line : text_components)
   {
-    std::size_t line_width = getColumnWidth(line);
+    const std::size_t line_width = getColumnWidth(line);
 
     if ( center_text )  // center one line
       center_x = int((max_line_width - line_width) / 2);
@@ -428,13 +428,13 @@ void FMessageBox::adjustButtons()
   if ( btn_width + 4 >= getWidth() )
   {
     std::size_t max_width;
-    auto root_widget = getRootWidget();
+    const auto& root_widget = getRootWidget();
     setWidth(btn_width + 5);
     max_width = ( root_widget ) ? root_widget->getClientWidth() : 80;
     setX (int((max_width - getWidth()) / 2));
   }
 
-  int btn_x = int((getWidth() - btn_width) / 2);
+  const int btn_x = int((getWidth() - btn_width) / 2);
 
   for (std::size_t n{0}; n < num_buttons; n++)
   {
@@ -442,7 +442,7 @@ void FMessageBox::adjustButtons()
       button[n]->setX(btn_x);
     else
     {
-      int btn_size = int(button[n]->getWidth());
+      const int btn_size = int(button[n]->getWidth());
       button[n]->setX(btn_x + int(n) * (btn_size + int(gap)));
     }
   }

src/fmouse.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -178,7 +178,7 @@ inline bool FMouse::isInputDataPending()
 }
 
 //----------------------------------------------------------------------
-inline FMouse* FMouse::createMouseObject (mouse_type mt)
+inline FMouse* FMouse::createMouseObject (const mouse_type mt)
 {
   switch ( mt )
   {
@@ -491,7 +491,7 @@ bool FMouseGPM::getGpmKeyPressed (bool is_pending)
 {
   setPending(is_pending);
   has_gpm_mouse_data = false;
-  int type = gpmEvent();
+  const int type = gpmEvent();
 
   switch ( type )
   {
@@ -519,7 +519,7 @@ void FMouseGPM::drawGpmPointer()
 //----------------------------------------------------------------------
 int FMouseGPM::gpmEvent (bool clear)
 {
-  int max = ( gpm_fd > stdin_no ) ? gpm_fd : stdin_no;
+  const int max = ( gpm_fd > stdin_no ) ? gpm_fd : stdin_no;
   fd_set ifds{};
   struct timeval tv{};
 
@@ -528,7 +528,7 @@ int FMouseGPM::gpmEvent (bool clear)
   FD_SET(gpm_fd, &ifds);
   tv.tv_sec  = 0;
   tv.tv_usec = 100000;  // 100 ms
-  int result = select (max + 1, &ifds, 0, 0, &tv);
+  const int result = select (max + 1, &ifds, 0, 0, &tv);
 
   if ( result > 0 && FD_ISSET(stdin_no, &ifds) )
   {
@@ -572,7 +572,7 @@ void FMouseX11::setRawData (FKeyboard::keybuffer& fifo_buf)
   // Import the X11 xterm mouse protocol (SGR-Mode) raw mouse data
 
   static constexpr std::size_t len = 6;
-  std::size_t fifo_buf_size{sizeof(fifo_buf)};
+  const std::size_t fifo_buf_size{sizeof(fifo_buf)};
   std::size_t n{};
   x11_mouse[0] = fifo_buf[3];
   x11_mouse[1] = fifo_buf[4];
@@ -598,9 +598,9 @@ void FMouseX11::processEvent (struct timeval* time)
   // Parse and interpret the X11 xterm mouse string
 
   const auto& mouse_position = getPos();
-  uChar x = uChar(x11_mouse[1] - 0x20);
+  const uChar x = uChar(x11_mouse[1] - 0x20);
-  uChar y = uChar(x11_mouse[2] - 0x20);
+  const uChar y = uChar(x11_mouse[2] - 0x20);
-  int btn = x11_mouse[0];
+  const int btn = x11_mouse[0];
   setNewPos (x, y);
   clearButtonState();
   setKeyState (btn);
@@ -652,7 +652,7 @@ void FMouseX11::setMoveState (const FPoint& mouse_position, int btn)
 }
 
 //----------------------------------------------------------------------
-void FMouseX11::setButtonState (int btn, struct timeval* time)
+void FMouseX11::setButtonState (const int btn, struct timeval* time)
 {
   // Get the x11 mouse button state
 
@@ -749,7 +749,7 @@ void FMouseSGR::setRawData (FKeyboard::keybuffer& fifo_buf)
 {
   // Import the X11 xterm mouse protocol (SGR-Mode) raw mouse data
 
-  std::size_t fifo_buf_size = sizeof(fifo_buf);
+  const std::size_t fifo_buf_size = sizeof(fifo_buf);
   std::size_t len = std::strlen(fifo_buf);
   std::size_t n{3};
 
@@ -784,7 +784,7 @@ void FMouseSGR::processEvent (struct timeval* time)
   int btn{0};
 
   // parse the SGR mouse string
-  char* p = sgr_mouse;
+  const char* p = sgr_mouse;
 
   while ( *p && *p != ';' )
   {
@@ -877,7 +877,7 @@ void FMouseSGR::setMoveState (const FPoint& mouse_position, int btn)
 }
 
 //----------------------------------------------------------------------
-void FMouseSGR::setPressedButtonState (int btn, struct timeval* time)
+void FMouseSGR::setPressedButtonState (const int btn, struct timeval* time)
 {
   // Gets the extended x11 mouse mode (SGR) status for pressed buttons
 
@@ -929,7 +929,7 @@ void FMouseSGR::setPressedButtonState (int btn, struct timeval* time)
 }
 
 //----------------------------------------------------------------------
-void FMouseSGR::setReleasedButtonState (int btn)
+void FMouseSGR::setReleasedButtonState (const int btn)
 {
   // Gets the extended x11 mouse mode (SGR) status for released buttons
 
@@ -978,7 +978,7 @@ void FMouseUrxvt::setRawData (FKeyboard::keybuffer& fifo_buf)
 {
   // Import the X11 xterm mouse protocol (Urxvt-Mode) raw mouse data
 
-  std::size_t fifo_buf_size = sizeof(fifo_buf);
+  const std::size_t fifo_buf_size = sizeof(fifo_buf);
   std::size_t len = std::strlen(fifo_buf);
   std::size_t n{2};
 
@@ -1015,7 +1015,7 @@ void FMouseUrxvt::processEvent (struct timeval* time)
   int btn{0};
 
   // Parse the Urxvt mouse string
-  char* p = urxvt_mouse;
+  const char* p = urxvt_mouse;
   bool x_neg{false};
   bool y_neg{false};
 
@@ -1132,7 +1132,7 @@ void FMouseUrxvt::setMoveState (const FPoint& mouse_position, int btn)
 }
 
 //----------------------------------------------------------------------
-void FMouseUrxvt::setButtonState (int btn, struct timeval* time)
+void FMouseUrxvt::setButtonState (const int btn, struct timeval* time)
 {
   // Get the urxvt mouse button state
 
@@ -1236,7 +1236,7 @@ FMouseControl::~FMouseControl()  // destructor
 //----------------------------------------------------------------------
 FPoint& FMouseControl::getPos()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->getPos();
@@ -1303,7 +1303,7 @@ void FMouseControl::useXtermMouse (bool enable)
 //----------------------------------------------------------------------
 bool FMouseControl::hasData()
 {
-  auto mouse_object = getMouseWithData();
+  const auto& mouse_object = getMouseWithData();
 
   if ( mouse_object )  // with data
     return true;
@@ -1314,7 +1314,7 @@ bool FMouseControl::hasData()
 //----------------------------------------------------------------------
 bool FMouseControl::hasEvent()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )  // with event
     return true;
@@ -1325,7 +1325,7 @@ bool FMouseControl::hasEvent()
 //----------------------------------------------------------------------
 bool FMouseControl::isLeftButtonPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isLeftButtonPressed();
@@ -1336,7 +1336,7 @@ bool FMouseControl::isLeftButtonPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isLeftButtonReleased()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isLeftButtonReleased();
@@ -1347,7 +1347,7 @@ bool FMouseControl::isLeftButtonReleased()
 //----------------------------------------------------------------------
 bool FMouseControl::isLeftButtonDoubleClick()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isLeftButtonDoubleClick();
@@ -1358,7 +1358,7 @@ bool FMouseControl::isLeftButtonDoubleClick()
 //----------------------------------------------------------------------
 bool FMouseControl::isRightButtonPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isRightButtonPressed();
@@ -1369,7 +1369,7 @@ bool FMouseControl::isRightButtonPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isRightButtonReleased()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isRightButtonReleased();
@@ -1380,7 +1380,7 @@ bool FMouseControl::isRightButtonReleased()
 //----------------------------------------------------------------------
 bool FMouseControl::isMiddleButtonPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isMiddleButtonPressed();
@@ -1391,7 +1391,7 @@ bool FMouseControl::isMiddleButtonPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isMiddleButtonReleased()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isMiddleButtonReleased();
@@ -1402,7 +1402,7 @@ bool FMouseControl::isMiddleButtonReleased()
 //----------------------------------------------------------------------
 bool FMouseControl::isShiftKeyPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isShiftKeyPressed();
@@ -1413,7 +1413,7 @@ bool FMouseControl::isShiftKeyPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isControlKeyPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isControlKeyPressed();
@@ -1424,7 +1424,7 @@ bool FMouseControl::isControlKeyPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isMetaKeyPressed()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isMetaKeyPressed();
@@ -1435,7 +1435,7 @@ bool FMouseControl::isMetaKeyPressed()
 //----------------------------------------------------------------------
 bool FMouseControl::isWheelUp()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isWheelUp();
@@ -1446,7 +1446,7 @@ bool FMouseControl::isWheelUp()
 //----------------------------------------------------------------------
 bool FMouseControl::isWheelDown()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isWheelDown();
@@ -1457,7 +1457,7 @@ bool FMouseControl::isWheelDown()
 //----------------------------------------------------------------------
 bool FMouseControl::isMoved()
 {
-  auto mouse_object = getMouseWithEvent();
+  const auto& mouse_object = getMouseWithEvent();
 
   if ( mouse_object )
     return mouse_object->isMoved();
@@ -1485,8 +1485,8 @@ bool FMouseControl::isGpmMouseEnabled()
   if ( mouse_protocol.empty() )
     return false;
 
-  auto mouse = mouse_protocol[FMouse::gpm];
+  const auto& mouse = mouse_protocol[FMouse::gpm];
-  auto gpm_mouse = static_cast<FMouseGPM*>(mouse);
+  const auto& gpm_mouse = static_cast<FMouseGPM*>(mouse);
 
   if ( gpm_mouse )
     return gpm_mouse->isGpmMouseEnabled();

src/fobject.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -183,7 +183,6 @@ void FObject::setParent (FObject* parent)
     return;
 
   removeParent();
-
   parent_obj = parent;
   has_parent = true;
   parent->children_list.push_back(this);
@@ -256,7 +255,7 @@ bool FObject::isTimeout (timeval* time, uInt64 timeout)
     diff.tv_usec += 1000000;
   }
 
-  uInt64 diff_usec = uInt64((diff.tv_sec * 1000000) + diff.tv_usec);
+  const uInt64 diff_usec = uInt64((diff.tv_sec * 1000000) + diff.tv_usec);
   return ( diff_usec > timeout );
 }
 
@@ -275,7 +274,7 @@ int FObject::addTimer (int interval)
   if ( ! timer_list->empty() )
   {
     auto iter = timer_list->begin();
-    auto last = timer_list->end();
+    const auto& last = timer_list->end();
 
     while ( iter != last )
     {
@@ -300,14 +299,13 @@ int FObject::addTimer (int interval)
 
   // insert in list sorted by timeout
   auto iter = timer_list->begin();
-  auto last = timer_list->end();
+  const auto& last = timer_list->end();
 
   while ( iter != last && iter->timeout < t.timeout )
     ++iter;
 
   timer_list->insert (iter, t);
   timer_modify_lock = false;
-
   return id;
 }
 
@@ -321,7 +319,7 @@ bool FObject::delTimer (int id)
 
   timer_modify_lock = true;
   auto iter = timer_list->begin();
-  auto last = timer_list->end();
+  const auto& last = timer_list->end();
 
   while ( iter != last && iter->id != id )
     ++iter;

src/foptiattr.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -1458,7 +1458,7 @@ inline void FOptiAttr::change_to_default_color ( FChar*& term
     else if ( bg == fc::Default && term->bg_color != fc::Default )
     {
       char* sgr_49;
-      auto& op = F_orig_pair.cap;
+      const auto& op = F_orig_pair.cap;
 
       if ( op && std::strncmp (op, CSI "39;49;25m", 11) == 0 )
         sgr_49 = C_STR(CSI "49;25m");
@@ -1482,20 +1482,20 @@ inline void FOptiAttr::change_current_color ( FChar*& term
                                             , FColor fg, FColor bg )
 {
   char* color_str{};
-  auto& AF = F_set_a_foreground.cap;
+  const auto& AF = F_set_a_foreground.cap;
-  auto& AB = F_set_a_background.cap;
+  const auto& AB = F_set_a_background.cap;
-  auto& Sf = F_set_foreground.cap;
+  const auto& Sf = F_set_foreground.cap;
-  auto& Sb = F_set_background.cap;
+  const auto& Sb = F_set_background.cap;
-  auto& sp = F_set_color_pair.cap;
+  const auto& sp = F_set_color_pair.cap;
-  bool frev ( ( off.attr.bit.reverse
+  const bool frev ( ( off.attr.bit.reverse
                    || off.attr.bit.standout
                    || term->attr.bit.reverse
                    || term->attr.bit.standout ) && fake_reverse );
 
   if ( AF && AB )
   {
-    auto ansi_fg = vga2ansi(fg);
+    const auto ansi_fg = vga2ansi(fg);
-    auto ansi_bg = vga2ansi(bg);
+    const auto ansi_bg = vga2ansi(bg);
 
     if ( (term->fg_color != fg || frev)
       && (color_str = tparm(AF, ansi_fg, 0, 0, 0, 0, 0, 0, 0, 0)) )
@@ -1552,9 +1552,9 @@ bool FOptiAttr::caused_reset_attributes (char cap[], uChar test)
 
   if ( cap )
   {
-    auto& ue = F_exit_underline_mode.cap;
+    const auto& ue = F_exit_underline_mode.cap;
-    auto& se = F_exit_standout_mode.cap;
+    const auto& se = F_exit_standout_mode.cap;
-    auto& me = F_exit_attribute_mode.cap;
+    const auto& me = F_exit_attribute_mode.cap;
 
     if ( (test & test_ansi_reset) && std::strncmp (cap, CSI "m", 3) == 0 )
       return true;
@@ -1582,10 +1582,10 @@ inline bool FOptiAttr::hasCharsetEquivalence()
 {
   // Detect if alt charset and pc charset are the same sequences
 
-  auto& alt_on  = F_enter_alt_charset_mode.cap;
+  const auto& alt_on  = F_enter_alt_charset_mode.cap;
-  auto& alt_off = F_enter_pc_charset_mode.cap;
+  const auto& alt_off = F_enter_pc_charset_mode.cap;
-  auto& pc_on   = F_enter_pc_charset_mode.cap;
+  const auto& pc_on   = F_enter_pc_charset_mode.cap;
-  auto& pc_off  = F_exit_pc_charset_mode.cap;
+  const auto& pc_off  = F_exit_pc_charset_mode.cap;
 
   if ( alt_on && pc_on && std::strcmp (alt_on, pc_on) == 0 )
     return true;

src/foptimove.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -600,8 +600,8 @@ int FOptiMove::repeatedAppend ( const capability& o
                               , volatile int count
                               , char* dst )
 {
-  std::size_t src_len = std::strlen(o.cap);
+  const std::size_t src_len = std::strlen(o.cap);
-  std::size_t dst_len = ( dst != nullptr ) ? std::strlen(dst) : 0;
+  const std::size_t dst_len = ( dst != nullptr ) ? std::strlen(dst) : 0;
   int total{0};
 
   if ( (dst_len + uInt(count) * src_len) < BUF_SIZE - 1 )
@@ -698,7 +698,7 @@ inline int FOptiMove::verticalMove (char move[], int from_y, int to_y)
 inline void FOptiMove::downMove ( char move[], int& vtime
                                 , int from_y, int to_y )
 {
-  int num = to_y - from_y;
+  const int num = to_y - from_y;
 
   if ( F_parm_down_cursor.cap && F_parm_down_cursor.duration < vtime )
   {
@@ -726,7 +726,7 @@ inline void FOptiMove::downMove ( char move[], int& vtime
 inline void FOptiMove::upMove ( char move[], int& vtime
                               , int from_y, int to_y )
 {
-  int num = from_y - to_y;
+  const int num = from_y - to_y;
 
   if ( F_parm_up_cursor.cap && F_parm_up_cursor.duration < vtime )
   {
@@ -801,7 +801,7 @@ inline void FOptiMove::rightMove ( char hmove[], int& htime
 
       while ( true )
       {
-        int tab_pos = pos + tabstop - (pos % tabstop);
+        const int tab_pos = pos + tabstop - (pos % tabstop);
 
         if ( tab_pos > to_x )
           break;
@@ -856,7 +856,7 @@ inline void FOptiMove::leftMove ( char hmove[], int& htime
 
       while ( true )
       {
-        int tab_pos = ( pos > 0 ) ? ((pos - 1) / tabstop) * tabstop : -1;
+        const int tab_pos = ( pos > 0 ) ? ((pos - 1) / tabstop) * tabstop : -1;
 
         if ( tab_pos < to_x )
           break;
@@ -898,7 +898,7 @@ inline bool FOptiMove::isMethod0Faster ( int& move_time
                                        , int xnew, int ynew )
 {
   // Test method 0: direct cursor addressing
-  char* move_xy = tgoto(F_cursor_address.cap, xnew, ynew);
+  const char* move_xy = tgoto(F_cursor_address.cap, xnew, ynew);
 
   if ( move_xy )
   {
@@ -922,7 +922,7 @@ inline bool FOptiMove::isMethod1Faster ( int& move_time
   if ( xold >= 0 && yold >= 0 )
   {
     char null_result[BUF_SIZE];
-    int  new_time = relativeMove (null_result, xold, yold, xnew, ynew);
+    const int new_time = relativeMove (null_result, xold, yold, xnew, ynew);
 
     if ( new_time < LONG_DURATION && new_time < move_time )
     {
@@ -944,7 +944,7 @@ inline bool FOptiMove::isMethod2Faster ( int& move_time
   if ( yold >= 0 && F_carriage_return.cap )
   {
     char null_result[BUF_SIZE];
-    int  new_time = relativeMove (null_result, 0, yold, xnew, ynew);
+    const int new_time = relativeMove (null_result, 0, yold, xnew, ynew);
 
     if ( new_time < LONG_DURATION
       && F_carriage_return.duration + new_time < move_time )
@@ -966,7 +966,7 @@ inline bool FOptiMove::isMethod3Faster ( int& move_time
   if ( F_cursor_home.cap )
   {
     char null_result[BUF_SIZE];
-    int  new_time = relativeMove (null_result, 0, 0, xnew, ynew);
+    const int new_time = relativeMove (null_result, 0, 0, xnew, ynew);
 
     if ( new_time < LONG_DURATION
       && F_cursor_home.duration + new_time < move_time )
@@ -987,7 +987,7 @@ inline bool FOptiMove::isMethod4Faster ( int& move_time
   if ( F_cursor_to_ll.cap )
   {
     char null_result[BUF_SIZE];
-    int  new_time = relativeMove ( null_result
+    const int new_time = relativeMove ( null_result
                                       , 0, int(screen_height) - 1
                                       , xnew, ynew );
 
@@ -1014,7 +1014,7 @@ inline bool FOptiMove::isMethod5Faster ( int& move_time
     && F_cursor_left.cap )
   {
     char null_result[BUF_SIZE];
-    int  new_time = relativeMove ( null_result
+    const int new_time = relativeMove ( null_result
                                       , int(screen_width) - 1, yold - 1
                                       , xnew, ynew );
 

src/fprogressbar.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -111,7 +111,7 @@ bool FProgressbar::setShadow (bool enable)
 void FProgressbar::hide()
 {
   FWidget::hide();
-  FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
+  const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
   hideArea (getSize() + shadow);
   print() << FPoint(int(getWidth()) - 4, 0)
           << ("      ");  // hide percentage
@@ -148,7 +148,7 @@ void FProgressbar::draw()
 //----------------------------------------------------------------------
 void FProgressbar::drawProgressLabel()
 {
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
 
   if ( parent_widget )
     setColor ( parent_widget->getForegroundColor()
@@ -156,7 +156,7 @@ void FProgressbar::drawProgressLabel()
   else
   {
     const auto& wc = getFWidgetColors();
-    setColor ( wc.dialog_fg, wc.dialog_bg );
+    setColor (wc.dialog_fg, wc.dialog_bg);
   }
 
   if ( isMonochron() )
@@ -199,9 +199,9 @@ std::size_t FProgressbar::drawProgressIndicator()
   if ( isMonochron() )
     setReverse(true);
 
-  double length = double(bar_length * percentage) / 100;
-  auto len = std::size_t(trunc(length));
   const auto& wc = getFWidgetColors();
+  const double length = double(bar_length * percentage) / 100;
+  auto len = std::size_t(trunc(length));
   print() << FColorPair (wc.progressbar_fg, wc.progressbar_fg)
           << FString (len, fc::FullBlock);  // █
 
@@ -233,7 +233,7 @@ void FProgressbar::drawProgressBackground (std::size_t len)
 {
   // Draw the progress background
 
-  std::size_t bg_len = bar_length - len;
+  const std::size_t bg_len = bar_length - len;
   const auto& wc = getFWidgetColors();
   setColor (wc.progressbar_fg, wc.progressbar_bg);
 

src/frect.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -123,7 +123,7 @@ void FRect::setY2 (int n)
 //----------------------------------------------------------------------
 void FRect::setX (int n)
 {
-  int dX = X2 - X1;
+  const int dX = X2 - X1;
   X1 = n;
   X2 = X1 + dX;
 }
@@ -131,7 +131,7 @@ void FRect::setX (int n)
 //----------------------------------------------------------------------
 void FRect::setY (int n)
 {
-  int dY = Y2 - Y1;
+  const int dY = Y2 - Y1;
   Y1 = n;
   Y2 = Y1 + dY;
 }
@@ -139,8 +139,8 @@ void FRect::setY (int n)
 //----------------------------------------------------------------------
 void FRect::setPos (int x, int y)
 {
-  int dX = X2 - X1;
+  const int dX = X2 - X1;
-  int dY = Y2 - Y1;
+  const int dY = Y2 - Y1;
   X1 = x;
   Y1 = y;
   X2 = X1 + dX;
@@ -150,8 +150,8 @@ void FRect::setPos (int x, int y)
 //----------------------------------------------------------------------
 void FRect::setPos (const FPoint& p)
 {
-  int dX = X2 - X1;
+  const int dX = X2 - X1;
-  int dY = Y2 - Y1;
+  const int dY = Y2 - Y1;
   X1 = p.getX();
   Y1 = p.getY();
   X2 = X1 + dX;

src/fscrollbar.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -208,7 +208,7 @@ void FScrollbar::calculateSliderValues()
     return;
   }
 
-  std::size_t v = ( min < 0 ) ? std::size_t(val - min) : std::size_t(val);
+  const std::size_t v = ( min < 0 ) ? std::size_t(val - min) : std::size_t(val);
 
   if ( slider_length >= bar_length )
     slider_pos = 0;
@@ -249,8 +249,8 @@ void FScrollbar::onMouseDown (FMouseEvent* ev)
   if ( min == max )
     return;
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( ev->getButton() == fc::MiddleButton )
   {
@@ -317,8 +317,8 @@ void FScrollbar::onMouseMove (FMouseEvent* ev)
     && ev->getButton() != fc::MiddleButton )
     return;
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( ev->getButton() == fc::MiddleButton )
   {
@@ -327,7 +327,7 @@ void FScrollbar::onMouseMove (FMouseEvent* ev)
   }
 
   // Process left mouse button
-  int new_scroll_type = getClickedScrollType(mouse_x, mouse_y);
+  const int new_scroll_type = getClickedScrollType(mouse_x, mouse_y);
 
   if ( scroll_type == FScrollbar::scrollJump )
   {
@@ -335,14 +335,14 @@ void FScrollbar::onMouseMove (FMouseEvent* ev)
 
     if ( bar_orientation == fc::vertical )
     {
-      int dy = mouse_y - slider_click_pos;
+      const int dy = mouse_y - slider_click_pos;
       slider_click_pos = mouse_y;
       new_val = int( round ( double((max - min) * (slider_pos + dy))
                            / double(bar_length - slider_length) ) );
     }
     else  // horizontal
     {
-      int dx = mouse_x - slider_click_pos;
+      const int dx = mouse_x - slider_click_pos;
       slider_click_pos = mouse_x;
       new_val = int( round ( double((max - min) * (slider_pos + dx))
                            / double(bar_length - slider_length) ) );
@@ -376,7 +376,7 @@ void FScrollbar::onMouseMove (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FScrollbar::onWheel (FWheelEvent* ev)
 {
-  int wheel = ev->getWheel();
+  const int wheel = ev->getWheel();
 
   if ( scroll_type != FScrollbar::noScroll )
   {
@@ -411,7 +411,7 @@ void FScrollbar::onTimer (FTimerEvent*)
     || ( scroll_type == FScrollbar::scrollPageForward
       && slider_pos == slider_click_stop_pos ) )
   {
-    int max_slider_pos = int(bar_length - slider_length);
+    const int max_slider_pos = int(bar_length - slider_length);
 
     if ( scroll_type == FScrollbar::scrollPageBackward
       && slider_pos == 0 )
@@ -449,7 +449,9 @@ void FScrollbar::draw()
   if ( length < 2 )
     return;
 
+  if ( isShown() )
     drawButtons();
+
   current_slider_pos = -1;
   drawBar();
 }
@@ -739,7 +741,7 @@ void FScrollbar::jumpToClickPos (int x, int y)
   }
   else  // horizontal
   {
-    int nf = isNewFont() ? 1 : 0;
+    const int nf = isNewFont() ? 1 : 0;
 
     if ( x > 1 + nf && x < int(getWidth()) - nf )
     {
@@ -799,8 +801,8 @@ void FScrollbar::processScroll()
 void FScrollbar::changeOnResize()
 {
   const FSize& size = getSize();
-  std::size_t w = size.getWidth();
+  const std::size_t w = size.getWidth();
-  std::size_t h = size.getHeight();
+  const std::size_t h = size.getHeight();
   length = ( bar_orientation == fc::vertical ) ? h : w;
 
   if ( bar_orientation == fc::vertical )

src/fscrollview.cpp

@@ -4,7 +4,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -64,7 +64,7 @@ void FScrollView::setScrollWidth (std::size_t width)
 
   if ( viewport )
   {
-    FSize no_shadow(0, 0);
+    const FSize no_shadow(0, 0);
     scroll_geometry.setWidth (width);
     resizeArea (scroll_geometry, no_shadow, viewport);
 
@@ -94,7 +94,7 @@ void FScrollView::setScrollHeight (std::size_t height)
 
   if ( viewport )
   {
-    FSize no_shadow(0, 0);
+    const FSize no_shadow(0, 0);
     scroll_geometry.setHeight (height);
     resizeArea (scroll_geometry, no_shadow, viewport);
     addPreprocessingHandler
@@ -129,7 +129,7 @@ void FScrollView::setScrollSize (const FSize& size)
 
   if ( viewport )
   {
-    FSize no_shadow(0, 0);
+    const FSize no_shadow(0, 0);
     scroll_geometry.setSize (width, height);
     resizeArea (scroll_geometry, no_shadow, viewport);
     addPreprocessingHandler
@@ -139,8 +139,8 @@ void FScrollView::setScrollSize (const FSize& size)
     setChildPrintArea (viewport);
   }
 
-  int xoffset_end = int(getScrollWidth() - getViewportWidth());
+  const int xoffset_end = int(getScrollWidth() - getViewportWidth());
-  int yoffset_end = int(getScrollHeight() - getViewportHeight());
+  const int yoffset_end = int(getScrollHeight() - getViewportHeight());
   setTopPadding (1 - getScrollY());
   setLeftPadding (1 - getScrollX());
   setBottomPadding (1 - (yoffset_end - getScrollY()));
@@ -237,8 +237,8 @@ void FScrollView::setHeight (std::size_t h, bool adjust)
 //----------------------------------------------------------------------
 void FScrollView::setSize (const FSize& size, bool adjust)
 {
-  std::size_t w = size.getWidth();
+  const std::size_t w = size.getWidth();
-  std::size_t h = size.getHeight();
+  const std::size_t h = size.getHeight();
   FWidget::setSize (size, adjust);
   viewport_geometry.setSize ( w - vertical_border_spacing - nf_offset
                             , h - horizontal_border_spacing );
@@ -256,8 +256,8 @@ void FScrollView::setGeometry ( const FPoint& pos, const FSize& size
   // Set the scroll view geometry
 
   FWidget::setGeometry (pos, size, adjust);
-  std::size_t w = size.getWidth();
+  const std::size_t w = size.getWidth();
-  std::size_t h = size.getHeight();
+  const std::size_t h = size.getHeight();
   scroll_geometry.setPos ( getTermX() + getLeftPadding() - 1
                          , getTermY() + getTopPadding() - 1 );
   viewport_geometry.setSize ( w - vertical_border_spacing - nf_offset
@@ -344,14 +344,12 @@ void FScrollView::scrollTo (int x, int y)
 {
   int& xoffset = viewport_geometry.x1_ref();
   int& yoffset = viewport_geometry.y1_ref();
-  int  xoffset_before = xoffset;
+  const int  xoffset_before = xoffset;
-  int  yoffset_before = yoffset;
+  const int  yoffset_before = yoffset;
-  int  xoffset_end = int(getScrollWidth() - getViewportWidth());
+  const int  xoffset_end = int(getScrollWidth() - getViewportWidth());
-  int  yoffset_end = int(getScrollHeight() - getViewportHeight());
+  const int  yoffset_end = int(getScrollHeight() - getViewportHeight());
-  std::size_t save_width = viewport_geometry.getWidth();
+  const std::size_t save_width = viewport_geometry.getWidth();
-  std::size_t save_height = viewport_geometry.getHeight();
+  const std::size_t save_height = viewport_geometry.getHeight();
-  bool changeX{false};
-  bool changeY{false};
   x--;
   y--;
 
@@ -373,8 +371,8 @@ void FScrollView::scrollTo (int x, int y)
   if ( xoffset > xoffset_end )
     xoffset = xoffset_end;
 
-  changeX = bool( xoffset_before != xoffset );
+  const bool changeX( xoffset_before != xoffset );
-  changeY = bool( yoffset_before != yoffset );
+  const bool changeY( yoffset_before != yoffset );
 
   if ( ! isShown() || ! viewport || ! (changeX || changeY) )
     return;
@@ -424,7 +422,7 @@ void FScrollView::draw()
   if ( isMonochron() )
     setReverse(true);
 
-  if ( auto p = getParentWidget() )
+  if ( const auto& p = getParentWidget() )
     setColor (p->getForegroundColor(), p->getBackgroundColor());
   else
     setColor();
@@ -451,14 +449,14 @@ void FScrollView::draw()
 //----------------------------------------------------------------------
 void FScrollView::drawBorder()
 {
-  FRect box(FPoint(1, 1), getSize());
+  const FRect box(FPoint(1, 1), getSize());
   finalcut::drawListBorder (this, box);
 }
 
 //----------------------------------------------------------------------
 void FScrollView::onKeyPress (FKeyEvent* ev)
 {
-  int idx = int(ev->key());
+  const int idx = int(ev->key());
 
   if ( key_map.find(idx) != key_map.end() )
   {
@@ -470,7 +468,7 @@ void FScrollView::onKeyPress (FKeyEvent* ev)
 //----------------------------------------------------------------------
 void FScrollView::onWheel (FWheelEvent* ev)
 {
-  int distance{4};
+  static constexpr int distance = 4;
 
   switch ( ev->getWheel() )
   {
@@ -517,25 +515,23 @@ void FScrollView::onChildFocusIn (FFocusEvent*)
 {
   // Scrolls the viewport so that the focused widget is visible
 
-  FRect widget_geometry;
+  const auto& focus = FWidget::getFocusWidget();
-  FRect vp_geometry;
-  auto focus = FWidget::getFocusWidget();
 
   if ( ! focus )
     return;
 
-  widget_geometry = focus->getGeometryWithShadow();
+  const FRect widget_geometry = focus->getGeometryWithShadow();
-  vp_geometry = viewport_geometry;
+  FRect vp_geometry = viewport_geometry;
   vp_geometry.move(1, 1);
 
   if ( ! vp_geometry.contains(widget_geometry) )
   {
-    int x{}
+    int x{};
-      , y{}
+    int y{};
-      , vx = vp_geometry.getX()
+    const int vx = vp_geometry.getX();
-      , vy = vp_geometry.getY()
+    const int vy = vp_geometry.getY();
-      , wx = widget_geometry.getX()
+    const int wx = widget_geometry.getX();
-      , wy = widget_geometry.getY();
+    const int wy = widget_geometry.getY();
 
     if ( wx > vx )
       x = widget_geometry.getX2() - int(vp_geometry.getWidth()) + 1;
@@ -556,11 +552,11 @@ void FScrollView::onChildFocusOut (FFocusEvent* out_ev)
 {
   // Change the focus away from FScrollView to another widget
 
-  auto focus = FWidget::getFocusWidget();
+  const auto& focus = FWidget::getFocusWidget();
 
   if ( out_ev->getFocusType() == fc::FocusNextWidget )
   {
-    auto last_widget = getLastFocusableWidget(getChildren());
+    const auto& last_widget = getLastFocusableWidget(getChildren());
 
     if ( focus == last_widget )
     {
@@ -570,7 +566,7 @@ void FScrollView::onChildFocusOut (FFocusEvent* out_ev)
   }
   else if ( out_ev->getFocusType() == fc::FocusPreviousWidget )
   {
-    auto first_widget = getFirstFocusableWidget(getChildren());
+    const auto& first_widget = getFirstFocusableWidget(getChildren());
 
     if ( focus == first_widget )
     {
@@ -602,10 +598,10 @@ FVTerm::FTermArea* FScrollView::getPrintArea()
 void FScrollView::adjustSize()
 {
   FWidget::adjustSize();
-  std::size_t width = getWidth();
+  const std::size_t width = getWidth();
-  std::size_t height = getHeight();
+  const std::size_t height = getHeight();
-  int xoffset = viewport_geometry.getX();
+  const int xoffset = viewport_geometry.getX();
-  int yoffset = viewport_geometry.getY();
+  const int yoffset = viewport_geometry.getY();
 
   scroll_geometry.setPos ( getTermX() + getLeftPadding() - 1
                          , getTermY() + getTopPadding() - 1 );
@@ -652,12 +648,12 @@ void FScrollView::copy2area()
     return;
 
   auto printarea = getCurrentPrintArea();
-  int ax = getTermX() - printarea->offset_left
+  const int ax = getTermX() - printarea->offset_left;
-    , ay = getTermY() - printarea->offset_top
+  const int ay = getTermY() - printarea->offset_top;
-    , dx = viewport_geometry.getX()
+  const int dx = viewport_geometry.getX();
-    , dy = viewport_geometry.getY()
+  const int dy = viewport_geometry.getY();
-    , y_end = int(getViewportHeight())
+  int y_end = int(getViewportHeight());
-    , x_end = int(getViewportWidth());
+  int x_end = int(getViewportWidth());
 
   // viewport width does not fit into the printarea
   if ( printarea->width <= ax + x_end )
@@ -671,8 +667,8 @@ void FScrollView::copy2area()
   {
     FChar* vc{};  // viewport character
     FChar* ac{};  // area character
-    int v_line_len = viewport->width;
+    const int v_line_len = viewport->width;
-    int a_line_len = printarea->width + printarea->right_shadow;
+    const int a_line_len = printarea->width + printarea->right_shadow;
     vc = &viewport->data[(dy + y) * v_line_len + dx];
     ac = &printarea->data[(ay + y) * a_line_len + ax];
     std::memcpy (ac, vc, sizeof(FChar) * unsigned(x_end));
@@ -694,15 +690,15 @@ void FScrollView::copy2area()
 //----------------------------------------------------------------------
 inline FPoint FScrollView::getViewportCursorPos()
 {
-  auto window = FWindow::getWindowWidget(this);
+  const auto& window = FWindow::getWindowWidget(this);
 
   if ( window )
   {
-    int widget_offsetX = getTermX() - window->getTermX()
+    const int widget_offsetX = getTermX() - window->getTermX();
-      , widget_offsetY = getTermY() - window->getTermY()
+    const int widget_offsetY = getTermY() - window->getTermY();
-      , x = widget_offsetX + viewport->input_cursor_x
+    const int x = widget_offsetX + viewport->input_cursor_x
-          - viewport_geometry.getX()
+                - viewport_geometry.getX();
-      , y = widget_offsetY + viewport->input_cursor_y
+    const int y = widget_offsetY + viewport->input_cursor_y
                 - viewport_geometry.getY();
     return FPoint (x, y);
   }
@@ -724,14 +720,14 @@ void FScrollView::init (FWidget* parent)
   setBackgroundColor (wc.dialog_bg);
   setGeometry (FPoint(1, 1), FSize(4, 4));
   setMinimumSize (FSize(4, 4));
-  int xoffset_end = int(getScrollWidth() - getViewportWidth());
+  const int xoffset_end = int(getScrollWidth() - getViewportWidth());
-  int yoffset_end = int(getScrollHeight() - getViewportHeight());
+  const int yoffset_end = int(getScrollHeight() - getViewportHeight());
   nf_offset = isNewFont() ? 1 : 0;
   setTopPadding (1 - getScrollY());
   setLeftPadding (1 - getScrollX());
   setBottomPadding (1 - (yoffset_end - getScrollY()));
   setRightPadding (1 - (xoffset_end - getScrollX()) + nf_offset);
-  FSize no_shadow(0, 0);
+  const FSize no_shadow(0, 0);
   std::size_t w = getViewportWidth();
   std::size_t h = getViewportHeight();
 
@@ -773,8 +769,8 @@ inline void FScrollView::mapKeyFunctions()
 //----------------------------------------------------------------------
 void FScrollView::calculateScrollbarPos()
 {
-  std::size_t width  = getWidth();
+  const std::size_t width  = getWidth();
-  std::size_t height = getHeight();
+  const std::size_t height = getHeight();
 
   if ( isNewFont() )
   {
@@ -841,9 +837,9 @@ void FScrollView::setViewportCursor()
   if ( ! isChild(getFocusWidget()) )
     return;
 
-  FPoint cursor_pos ( viewport->input_cursor_x - 1
+  const FPoint cursor_pos ( viewport->input_cursor_x - 1
                           , viewport->input_cursor_y - 1 );
-  FPoint window_cursor_pos(getViewportCursorPos());
+  const FPoint window_cursor_pos(getViewportCursorPos());
   auto printarea = getCurrentPrintArea();
   printarea->input_cursor_x = window_cursor_pos.getX();
   printarea->input_cursor_y = window_cursor_pos.getY();
@@ -859,8 +855,8 @@ void FScrollView::setViewportCursor()
 void FScrollView::cb_VBarChange (FWidget*, FDataPtr)
 {
   FScrollbar::sType scrollType = vbar->getScrollType();
+  static constexpr int wheel_distance = 4;
   int distance{1};
-  int wheel_distance{4};
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
   {
@@ -910,8 +906,8 @@ void FScrollView::cb_VBarChange (FWidget*, FDataPtr)
 void FScrollView::cb_HBarChange (FWidget*, FDataPtr)
 {
   FScrollbar::sType scrollType = hbar->getScrollType();
+  static constexpr int wheel_distance = 4;
   int distance{1};
-  int wheel_distance{4};
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
   {

src/fspinbox.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -163,7 +163,7 @@ void FSpinBox::hide()
 {
   input_field.hide();
   FWidget::hide();
-  FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
+  const FSize shadow = hasShadow() ? FSize(1, 1) : FSize(0, 0);
   hideArea (getSize() + shadow);
 }
 
@@ -173,7 +173,7 @@ void FSpinBox::onKeyPress (FKeyEvent* ev)
   if ( ! isEnabled() )
     return;
 
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -215,8 +215,8 @@ void FSpinBox::onMouseDown (FMouseEvent* ev)
   if ( min == max )
     return;
 
-  int mouse_x = ev->getX();
+  const int mouse_x = ev->getX();
-  int mouse_y = ev->getY();
+  const int mouse_y = ev->getY();
 
   if ( mouse_x == int(getWidth()) - 1 && mouse_y == 1 )
   {
@@ -248,7 +248,7 @@ void FSpinBox::onMouseUp (FMouseEvent*)
 //----------------------------------------------------------------------
 void FSpinBox::onWheel (FWheelEvent* ev)
 {
-  int wheel = ev->getWheel();
+  const int wheel = ev->getWheel();
 
   delOwnTimer();
   forceFocus();
@@ -324,7 +324,7 @@ void FSpinBox::draw()
 {
   const auto& wc = getFWidgetColors();
 
-  FColorPair inc_button_color = [&] () -> FColorPair
+  const FColorPair inc_button_color = [&] () -> FColorPair
   {
     if ( value == max )
       return FColorPair ( wc.scrollbar_button_inactive_fg
@@ -334,7 +334,7 @@ void FSpinBox::draw()
                         , wc.scrollbar_button_bg );
   }();
 
-  FColorPair dec_button_color = [&] () -> FColorPair
+  const FColorPair dec_button_color = [&] () -> FColorPair
   {
     if ( value == min )
       return FColorPair ( wc.scrollbar_button_inactive_fg
@@ -415,7 +415,7 @@ void FSpinBox::forceFocus()
 //----------------------------------------------------------------------
 void FSpinBox::cb_inputFieldChange (finalcut::FWidget* w, FDataPtr)
 {
-  auto lineedit = static_cast<FLineEdit*>(w);
+  const auto& lineedit = static_cast<FLineEdit*>(w);
 
   if ( lineedit->getText().isEmpty() )
     value = 0;
@@ -427,7 +427,7 @@ void FSpinBox::cb_inputFieldChange (finalcut::FWidget* w, FDataPtr)
 
     if ( std::regex_search(text, match, regex) )
     {
-      FString tmp(match[0]);
+      const FString tmp(match[0]);
       value = tmp.toLong();
     }
     else

src/fstatusbar.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -175,8 +175,8 @@ bool FStatusBar::hasActivatedKey()
 void FStatusBar::hide()
 {
   const auto& wc = getFWidgetColors();
-  FColor fg = wc.term_fg;
+  const FColor fg = wc.term_fg;
-  FColor bg = wc.term_bg;
+  const FColor bg = wc.term_bg;
   setColor (fg, bg);
   print() << FPoint(1, 1) << FString(getDesktopWidth(), L' ');
   updateTerminal();
@@ -194,13 +194,13 @@ void FStatusBar::drawMessage()
 
   x = x_msg;
   int space_offset{1};
-  bool hasKeys( ! key_list.empty() );
   bool isLastActiveFocus{false};
-  std::size_t termWidth = getDesktopWidth();
+  const bool hasKeys( ! key_list.empty() );
+  const std::size_t termWidth = getDesktopWidth();
 
   if ( hasKeys )
   {
-    auto iter = key_list.end();
+    const auto& iter = key_list.end();
     isLastActiveFocus = bool ( (*(iter - 1))->isActivated()
                             || (*(iter - 1))->hasMouseFocus() );
   }
@@ -234,7 +234,7 @@ void FStatusBar::drawMessage()
         print (' ');
       }
 
-      auto msg_length = getColumnWidth(getMessage());
+      const auto msg_length = getColumnWidth(getMessage());
       x += int(msg_length);
 
       if ( x - 1 <= int(termWidth) )
@@ -242,7 +242,7 @@ void FStatusBar::drawMessage()
       else
       {
         // Print ellipsis
-        std::size_t len = msg_length + termWidth - uInt(x) - 1;
+        const std::size_t len = msg_length + termWidth - uInt(x) - 1;
         print() << getColumnSubString ( getMessage(), 1, len)
                 << "..";
       }
@@ -330,7 +330,7 @@ void FStatusBar::onMouseDown (FMouseEvent* ev)
     if ( ! key_list.empty() )
     {
       auto iter = key_list.begin();
-      auto last = key_list.end();
+      const auto& last = key_list.end();
 
       while ( iter != last )
       {
@@ -352,16 +352,16 @@ void FStatusBar::onMouseDown (FMouseEvent* ev)
   {
     int X{1};
     auto iter = key_list.begin();
-    auto last = key_list.end();
+    const auto& last = key_list.end();
 
     while ( iter != last )
     {
-      int x1 = X
+      const int x1 = X;
-        , kname_len = getKeyNameWidth(*iter)
+      const int kname_len = getKeyNameWidth(*iter);
-        , txt_length = getKeyTextWidth(*iter)
+      const int txt_length = getKeyTextWidth(*iter);
-        , x2 = x1 + kname_len + txt_length + 1
+      const int x2 = x1 + kname_len + txt_length + 1;
-        , mouse_x = ev->getX()
+      const int mouse_x = ev->getX();
-        , mouse_y = ev->getY();
+      const int mouse_y = ev->getY();
 
       if ( mouse_x >= x1
         && mouse_x <= x2
@@ -395,20 +395,20 @@ void FStatusBar::onMouseUp (FMouseEvent* ev)
     {
       int X{1};
       auto iter = key_list.begin();
-      auto last = key_list.end();
+      const auto& last = key_list.end();
 
       while ( iter != last )
       {
-        int x1 = X
+        const int x1 = X;
-          , kname_len = getKeyNameWidth(*iter)
+        const int kname_len = getKeyNameWidth(*iter);
-          , txt_length = getKeyTextWidth(*iter)
+        const int txt_length = getKeyTextWidth(*iter);
-          , x2 = x1 + kname_len + txt_length + 1;
+        const int x2 = x1 + kname_len + txt_length + 1;
 
         if ( (*iter)->hasMouseFocus() )
         {
           (*iter)->unsetMouseFocus();
-          int mouse_x = ev->getX();
+          const int mouse_x = ev->getX();
-          int mouse_y = ev->getY();
+          const int mouse_y = ev->getY();
 
           if ( mouse_x >= x1 && mouse_x <= x2 && mouse_y == 1 )
             (*iter)->setActive();
@@ -439,16 +439,16 @@ void FStatusBar::onMouseMove (FMouseEvent* ev)
     bool focus_changed{false};
     int X{1};
     auto iter = key_list.begin();
-    auto last = key_list.end();
+    const auto& last = key_list.end();
 
     while ( iter != last )
     {
-      int x1 = X
+      const int x1 = X;
-        , kname_len = getKeyNameWidth(*iter)
+      const int kname_len = getKeyNameWidth(*iter);
-        , txt_length = getKeyTextWidth(*iter)
+      const int txt_length = getKeyTextWidth(*iter);
-        , x2 = x1 + kname_len + txt_length + 1
+      const int x2 = x1 + kname_len + txt_length + 1;
-        , mouse_x = ev->getX()
+      const int mouse_x = ev->getX();
-        , mouse_y = ev->getY();
+      const int mouse_y = ev->getY();
 
       if ( mouse_x >= x1
         && mouse_x <= x2
@@ -483,9 +483,9 @@ void FStatusBar::cb_statuskey_activated (FWidget* widget, FDataPtr)
 {
   if ( ! key_list.empty() )
   {
-    auto statuskey = static_cast<FStatusKey*>(widget);
+    const auto& statuskey = static_cast<FStatusKey*>(widget);
     auto iter = key_list.begin();
-    auto last = key_list.end();
+    const auto& last = key_list.end();
 
     while ( iter != last )
     {
@@ -503,9 +503,9 @@ void FStatusBar::cb_statuskey_activated (FWidget* widget, FDataPtr)
 //----------------------------------------------------------------------
 void FStatusBar::init()
 {
-  auto r = getRootWidget();
+  const auto& r = getRootWidget();
-  std::size_t w = r->getWidth();
+  const std::size_t w = r->getWidth();
-  int h = int(r->getHeight());
+  const int h = int(r->getHeight());
   // initialize geometry values
   setGeometry (FPoint(1, h), FSize(w, 1), false);
   setAlwaysOnTop();
@@ -564,7 +564,7 @@ void FStatusBar::drawKeys()
 
   while ( iter != key_list.end() )
   {
-    auto item = *iter;
+    const auto& item = *iter;
     keyname_len = getKeyNameWidth(item);
 
     if ( x + keyname_len + 2 < int(screenWidth) )
@@ -597,7 +597,7 @@ void FStatusBar::drawKey (keyList::const_iterator iter)
 {
   // Draw not active key
 
-  auto item = *iter;
+  const auto item = *iter;
   const auto& wc = getFWidgetColors();
   setColor (wc.statusbar_hotkey_fg, wc.statusbar_hotkey_bg);
   x++;
@@ -607,7 +607,7 @@ void FStatusBar::drawKey (keyList::const_iterator iter)
   setColor (wc.statusbar_fg, wc.statusbar_bg);
   x++;
   print ('-');
-  auto column_width = getColumnWidth (item->getText());
+  const auto column_width = getColumnWidth (item->getText());
   x += int(column_width);
 
   if ( x - 1 <= int(screenWidth) )
@@ -615,7 +615,7 @@ void FStatusBar::drawKey (keyList::const_iterator iter)
   else
   {
     // Print ellipsis
-    std::size_t len = column_width + screenWidth - std::size_t(x) - 1;
+    const std::size_t len = column_width + screenWidth - std::size_t(x) - 1;
     print() << getColumnSubString(item->getText(), 1, len)
             << "..";
   }
@@ -655,7 +655,7 @@ void FStatusBar::drawActiveKey (keyList::const_iterator iter)
 {
   // Draw active key
 
-  auto item = *iter;
+  const auto& item = *iter;
 
   if ( isMonochron() )
     setReverse(false);
@@ -670,7 +670,7 @@ void FStatusBar::drawActiveKey (keyList::const_iterator iter)
   setColor (wc.statusbar_active_fg, wc.statusbar_active_bg);
   x++;
   print ('-');
-  auto column_width = getColumnWidth (item->getText());
+  const auto column_width = getColumnWidth (item->getText());
   x += int(column_width);
 
   if ( x <= int(screenWidth) )

src/fstring.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -446,7 +446,7 @@ FString FString::toUpper() const
 //----------------------------------------------------------------------
 sInt16 FString::toShort() const
 {
-  long num = toLong();
+  const long num = toLong();
 
   if ( num > SHRT_MAX )
     throw std::overflow_error ("overflow");
@@ -460,7 +460,7 @@ sInt16 FString::toShort() const
 //----------------------------------------------------------------------
 uInt16 FString::toUShort() const
 {
-  uLong num = uLong(toULong());
+  const uLong num = uLong(toULong());
 
   if ( num > USHRT_MAX )
     throw std::overflow_error ("overflow");
@@ -485,7 +485,7 @@ int FString::toInt() const
 //----------------------------------------------------------------------
 uInt FString::toUInt() const
 {
-  uLong num = uLong(toULong());
+  const uLong num = uLong(toULong());
 
   if ( num > UINT_MAX )
     throw std::overflow_error ("overflow");
@@ -500,7 +500,7 @@ long FString::toLong() const
   long num{0};
   long tenth_limit{LONG_MAX / 10};
   long tenth_limit_digit{LONG_MAX % 10};
-  FString s(trim());
+  const FString s(trim());
   const wchar_t* p = s.string;
 
   if ( ! p )
@@ -551,9 +551,9 @@ long FString::toLong() const
 uLong FString::toULong() const
 {
   uLong num{0};
-  uLong tenth_limit{ULONG_MAX / 10};
+  const uLong tenth_limit{ULONG_MAX / 10};
-  uLong tenth_limit_digit{ULONG_MAX % 10};
+  const uLong tenth_limit_digit{ULONG_MAX % 10};
-  FString s(trim());
+  const FString s(trim());
   const wchar_t* p = s.string;
 
   if ( ! p )
@@ -573,7 +573,7 @@ uLong FString::toULong() const
 
   while ( std::iswdigit(std::wint_t(*p)) )
   {
-    uChar d = uChar(*p - L'0');
+    const uChar d = uChar(*p - L'0');
 
     if ( num > tenth_limit
       || (num == tenth_limit && d > tenth_limit_digit) )
@@ -594,7 +594,7 @@ uLong FString::toULong() const
 //----------------------------------------------------------------------
 float FString::toFloat() const
 {
-  double num = toDouble();
+  const double num = toDouble();
 
   if ( num > double(FLT_MAX) || num < double(-FLT_MAX) )
     throw std::overflow_error ("overflow");
@@ -615,7 +615,7 @@ double FString::toDouble() const
     throw std::invalid_argument ("empty value");
 
   wchar_t* p{};
-  double ret = std::wcstod(string, &p);
+  const double ret = std::wcstod(string, &p);
 
   if ( p != 0 && *p != '\0' )
     throw std::invalid_argument ("no valid floating point value");
@@ -635,7 +635,7 @@ double FString::toDouble() const
 //----------------------------------------------------------------------
 FString FString::ltrim() const
 {
-  FString s(string);
+  const FString s(string);
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -679,7 +679,7 @@ FString FString::trim() const
   if ( ! (string && *string) )
     return *this;
 
-  FString s(ltrim());
+  const FString s(ltrim());
   return s.rtrim();
 }
 
@@ -704,7 +704,7 @@ FString FString::left (std::size_t len) const
 //----------------------------------------------------------------------
 FString FString::right (std::size_t len) const
 {
-  FString s(string);
+  const FString s(string);
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -721,7 +721,7 @@ FString FString::right (std::size_t len) const
 //----------------------------------------------------------------------
 FString FString::mid (std::size_t pos, std::size_t len) const
 {
-  FString s(string);
+  const FString s(string);
 
   // handle NULL and empty string
   if ( ! (string && *string) )
@@ -745,7 +745,7 @@ FString FString::mid (std::size_t pos, std::size_t len) const
 //----------------------------------------------------------------------
 FStringList FString::split (const FString& delimiter)
 {
-  FString s(string);
+  const FString s(string);
   FStringList string_list{};
 
   // handle NULL and empty string
@@ -1025,8 +1025,8 @@ FString FString::replace (const FString& from, const FString& to)
     return s;
 
   const wchar_t* p = s.string;
-  std::size_t from_length = from.getLength();
+  const std::size_t from_length = from.getLength();
-  std::size_t to_length = to.getLength();
+  const std::size_t to_length = to.getLength();
   std::size_t pos{0};
 
   while ( *p )
@@ -1083,13 +1083,13 @@ FString FString::expandTabs (int tabstop) const
   if ( tabstop <= 0 )
     return instr;
 
-  FStringList tab_split = instr.split("\t");
+  const FStringList tab_split = instr.split("\t");
-  uLong last = tab_split.size();
+  const uLong last = tab_split.size();
 
   for (std::size_t i{0}; i < last; i++)
   {
-    std::size_t len = tab_split[i].getLength();
+    const std::size_t len = tab_split[i].getLength();
-    std::size_t tab_len = std::size_t(tabstop);
+    const std::size_t tab_len = std::size_t(tabstop);
 
     if ( i == last - 1 )
       outstr += tab_split[i];
@@ -1419,8 +1419,8 @@ inline char* FString::wc_to_c_str (const wchar_t s[]) const
   if ( c_string )
     delete[](c_string);
 
-  int size = int(std::wcslen(s)) + 1;
+  const int size = int(std::wcslen(s)) + 1;
-  int dest_size = size * int(CHAR_SIZE);
+  const int dest_size = size * int(CHAR_SIZE);
   const wchar_t* src = s;
   std::mbstate_t state{};
   std::memset (&state, '\0', sizeof(mbstate_t));
@@ -1438,7 +1438,7 @@ inline char* FString::wc_to_c_str (const wchar_t s[]) const
     return 0;
   }
 
-  int mblength = \
+  const int mblength = \
       int(std::wcsrtombs (c_string, &src, std::size_t(dest_size), &state));
 
   if ( mblength == -1 && errno != EILSEQ )
@@ -1471,8 +1471,8 @@ inline wchar_t* FString::c_to_wc_str (const char s[]) const
     }
   }
 
-  int size = int(std::strlen(s)) + 1;
+  const int size = int(std::strlen(s)) + 1;
-  int dest_size = size * int(CHAR_SIZE);
+  const int dest_size = size * int(CHAR_SIZE);
   const char* src = s;
   wchar_t* dest{};
   std::mbstate_t state{};
@@ -1490,7 +1490,7 @@ inline wchar_t* FString::c_to_wc_str (const char s[]) const
     return 0;
   }
 
-  int wclength = \
+  const int wclength = \
       int(std::mbsrtowcs (dest, &src, std::size_t(dest_size), &state));
 
   if ( wclength == -1 )
@@ -1636,7 +1636,7 @@ std::ostream& operator << (std::ostream& outstr, const FString& s)
   }
   else if ( width > 0 )
   {
-    FString fill_str(width, outstr.fill());
+    const FString fill_str(width, outstr.fill());
     outstr << s.wc_to_c_str(fill_str.string);
   }
 
@@ -1670,7 +1670,7 @@ std::wostream& operator << (std::wostream& outstr, const FString& s)
   }
   else if ( width > 0 )
   {
-    FString fill_str(width, outstr.fill());
+    const FString fill_str(width, outstr.fill());
     outstr << fill_str.string;
   }
 

src/fswitch.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -142,7 +142,7 @@ void FSwitch::drawCheckButton()
 inline void FSwitch::drawChecked()
 {
   wchar_t on[6]{L"  On "};
-  wchar_t off[6]{L" Off "};
+  const wchar_t off[6]{L" Off "};
   const auto& wc = getFWidgetColors();
 
   if ( hasFocus() && ! button_pressed )
@@ -191,7 +191,7 @@ inline void FSwitch::drawChecked()
 //----------------------------------------------------------------------
 inline void FSwitch::drawUnchecked()
 {
-  wchar_t on[6]{L"  On "};
+  const wchar_t on[6]{L"  On "};
   wchar_t off[6]{L" Off "};
 
   const auto& wc = getFWidgetColors();

src/fterm.cpp

@@ -118,7 +118,7 @@ FTerm::~FTerm()  // destructor
 //----------------------------------------------------------------------
 std::size_t FTerm::getLineNumber()
 {
-  auto& term_geometry = data->getTermGeometry();
+  const auto& term_geometry = data->getTermGeometry();
 
   if ( term_geometry.getHeight() == 0 )
     detectTermSize();
@@ -129,7 +129,7 @@ std::size_t FTerm::getLineNumber()
 //----------------------------------------------------------------------
 std::size_t FTerm::getColumnNumber()
 {
-  auto& term_geometry = data->getTermGeometry();
+  const auto& term_geometry = data->getTermGeometry();
 
   if ( term_geometry.getWidth() == 0 )
     detectTermSize();
@@ -808,7 +808,7 @@ int FTerm::closeConsole()
   if ( ! data )
     data = FTerm::getFTermData();
 
-  int fd = data->getTTYFileDescriptor();
+  const int fd = data->getTTYFileDescriptor();
   int ret{-1};
 
   if ( fd < 0 )  // console is already closed
@@ -981,9 +981,9 @@ void FTerm::setPalette (FColor index, int r, int g, int b)
   {
     const char* color_str{};
 
-    int rr = (r * 1001) / 256
+    const int rr = (r * 1001) / 256;
-      , gg = (g * 1001) / 256
+    const int gg = (g * 1001) / 256;
-      , bb = (b * 1001) / 256;
+    const int bb = (b * 1001) / 256;
 
     if ( Ic )
       color_str = tparm(Ic, index, rr, gg, bb, 0, 0, 0, 0, 0);
@@ -1113,9 +1113,9 @@ fc::encoding FTerm::getEncoding()
 //----------------------------------------------------------------------
 std::string FTerm::getEncodingString()
 {
-  auto term_encoding = data->getTermEncoding();
+  const auto& term_encoding = data->getTermEncoding();
-  auto& encoding_list = data->getEncodingList();
+  const auto& encoding_list = data->getEncodingList();
-  auto end = encoding_list.end();
+  const auto& end = encoding_list.end();
 
   for (auto it = encoding_list.begin(); it != end; ++it )
     if ( it->second == term_encoding )
@@ -1127,7 +1127,7 @@ std::string FTerm::getEncodingString()
 //----------------------------------------------------------------------
 bool FTerm::charEncodable (wchar_t c)
 {
-  wchar_t ch = charEncode(c);
+  const wchar_t ch = charEncode(c);
   return bool(ch > 0 && ch != c);
 }
 
@@ -1333,7 +1333,7 @@ void FTerm::init_global_values (bool disable_alt_screen)
 void FTerm::init_terminal_device_path()
 {
   char termfilename[256]{};
-  int  stdout_no = FTermios::getStdOut();
+  const int  stdout_no = FTermios::getStdOut();
 
   if ( ttyname_r(stdout_no, termfilename, sizeof(termfilename)) )
     termfilename[0] = '\0';
@@ -1378,8 +1378,8 @@ void FTerm::init_alt_charset()
     for (std::size_t n{0}; TCAP(fc::t_acs_chars)[n]; n += 2)
     {
       // insert the VT100 key/value pairs into a map
-      uChar p1 = uChar(TCAP(fc::t_acs_chars)[n]);
+      const uChar p1 = uChar(TCAP(fc::t_acs_chars)[n]);
-      uChar p2 = uChar(TCAP(fc::t_acs_chars)[n + 1]);
+      const uChar p2 = uChar(TCAP(fc::t_acs_chars)[n + 1]);
       vt100_alt_char[p1] = p2;
     }
   }
@@ -1393,17 +1393,17 @@ void FTerm::init_alt_charset()
   // Update array 'character' with discovered VT100 pairs
   for (std::size_t n{0}; n <= fc::lastKeyItem; n++ )
   {
-    uChar keyChar = uChar(fc::vt100_key_to_utf8[n][vt100_key]);
+    const uChar keyChar = uChar(fc::vt100_key_to_utf8[n][vt100_key]);
-    uChar altChar = uChar(vt100_alt_char[keyChar]);
+    const uChar altChar = uChar(vt100_alt_char[keyChar]);
-    uInt utf8char = uInt(fc::vt100_key_to_utf8[n][utf8_char]);
+    const uInt utf8char = uInt(fc::vt100_key_to_utf8[n][utf8_char]);
-    fc::encoding num{fc::NUM_OF_ENCODINGS};
+    const fc::encoding num{fc::NUM_OF_ENCODINGS};
 
     uInt* p = std::find ( fc::character[0]
                         , fc::character[fc::lastCharItem] + num
                         , utf8char );
     if ( p != fc::character[fc::lastCharItem] + num )  // found in character
     {
-      int item = int(std::distance(fc::character[0], p) / num);
+      const int item = int(std::distance(fc::character[0], p) / num);
 
       if ( altChar )                 // update alternate character set
         fc::character[item][fc::VT100] = altChar;
@@ -1751,7 +1751,7 @@ inline void FTerm::init_encoding_set()
 //----------------------------------------------------------------------
 void FTerm::init_term_encoding()
 {
-  int stdout_no = FTermios::getStdOut();
+  const int stdout_no = FTermios::getStdOut();
   const char* termtype = data->getTermType();
 
   if ( ! fsys )
@@ -1831,7 +1831,7 @@ void FTerm::init_tab_quirks()
   // on the terminal and does not move the cursor to the next tab stop
   // position
 
-  auto enc = data->getTermEncoding();
+  const auto& enc = data->getTermEncoding();
 
   if ( enc == fc::VT100 || enc == fc::PC )
   {
@@ -2362,8 +2362,8 @@ void FTerm::initTermspecifics()
 //----------------------------------------------------------------------
 void FTerm::initBaudRate()
 {
-  int stdout_no = FTermios::getStdOut();
+  const int stdout_no = FTermios::getStdOut();
-  uInt baud = FTermios::getBaudRate();
+  const uInt baud = FTermios::getBaudRate();
   data->setBaudrate(baud);
 
   if ( ! fsys )

src/fterm_functions.cpp

@@ -190,7 +190,7 @@ const wchar_t reverse_newfont_list[] =
 //----------------------------------------------------------------------
 uInt env2uint (const char* env)
 {
-  FString str(getenv(env));
+  const FString str(getenv(env));
 
   if ( str.isEmpty() )
     return 0;
@@ -424,7 +424,7 @@ std::size_t getColumnWidth (const FString& s, std::size_t pos)
     return 0;
 
   std::size_t column_width{0};
-  auto length = s.getLength();
+  const auto length = s.getLength();
 
   if ( pos > length )
     pos = length;
@@ -483,7 +483,7 @@ std::size_t getColumnWidth (const wchar_t wchar)
 //----------------------------------------------------------------------
 std::size_t getColumnWidth (FChar& term_char)
 {
-  std::size_t char_width = getColumnWidth(term_char.ch);
+  const std::size_t char_width = getColumnWidth(term_char.ch);
 
   if ( char_width == 2 && FTerm::getEncoding() != fc::UTF8 )
   {

src/ftermbuffer.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2017-2019 Markus Gans                                      *
+* Copyright 2017-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -56,7 +56,7 @@ const FString FTermBuffer::toString() const
 int FTermBuffer::write (const FString& string)
 {
   assert ( ! string.isNull() );
-  int len = int(string.getLength());
+  const int len = int(string.getLength());
 
   for (auto&& c : string)
   {

src/ftermcap.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -84,7 +84,7 @@ void FTermcap::termcap()
   static char string_buf[2048]{};
   char* buffer = string_buf;
   int status = uninitialized;
-  bool color256 = term_detection->canDisplay256Colors();
+  const bool color256 = term_detection->canDisplay256Colors();
 
   // Open termcap file
 #if defined(__sun) && defined(__SVR4)

src/ftermcapquirks.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -58,7 +58,7 @@ void FTermcapQuirks::terminalFixup()
 {
   fterm_data = FTerm::getFTermData();
   term_detection = FTerm::getFTermDetection();
-  auto& td = term_detection;
+  const auto& td = term_detection;
 
   if ( td->isCygwinTerminal() )
   {

src/ftermdetection.cpp

@@ -543,7 +543,7 @@ const FString FTermDetection::getXTermColorName (FColor color)
   FString color_str{""};
   fd_set ifds{};
   struct timeval tv{};
-  int stdin_no = FTermios::getStdIn();
+  const int stdin_no = FTermios::getStdIn();
 
   // get color
   std::fprintf (stdout, OSC "4;%hu;?" BEL, color);
@@ -627,7 +627,7 @@ const FString FTermDetection::getAnswerbackMsg()
   fd_set ifds{};
   struct timeval tv{};
   char temp[10]{};
-  int stdin_no = FTermios::getStdIn();
+  const int stdin_no = FTermios::getStdIn();
 
   std::putchar (ENQ[0]);  // Send enquiry character
   std::fflush(stdout);
@@ -671,9 +671,9 @@ char* FTermDetection::parseSecDA (char current_termtype[])
   // remove the last byte ("c")
   temp.remove(temp.getLength() - 1, 1);
   // split into components
-  FStringList sec_da_list = temp.split(';');
+  const FStringList sec_da_list = temp.split(';');
 
-  uLong num_components = sec_da_list.size();
+  const uLong num_components = sec_da_list.size();
 
   // The second device attribute (SEC_DA) always has 3 parameters,
   // otherwise it usually has a copy of the device attribute (primary DA)
@@ -728,16 +728,16 @@ const FString FTermDetection::getSecDA()
 {
   FString sec_da_str{""};
 
-  int a{0}
+  int a{0};
-    , b{0}
+  int b{0};
-    , c{0}
+  int c{0};
-    , stdin_no{FTermios::getStdIn()}
+  const int stdin_no{FTermios::getStdIn()};
-    , stdout_no{FTermios::getStdOut()};
+  const int stdout_no{FTermios::getStdOut()};
   fd_set ifds{};
   struct timeval tv{};
 
   // Get the secondary device attributes
-  ssize_t ret = write(stdout_no, SECDA, std::strlen(SECDA));
+  const ssize_t ret = write(stdout_no, SECDA, std::strlen(SECDA));
 
   if ( ret == -1 )
     return sec_da_str;

src/ftermlinux.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -138,7 +138,7 @@ bool FTermLinux::isLinuxConsole()
     fsystem = FTerm::getFSystem();
 
   char arg{0};
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
 
   // Get keyboard type an compare
   return ( fsystem->isTTY(fd_tty)
@@ -217,8 +217,8 @@ void FTermLinux::initCharMap()
   {
     for (std::size_t i{0}; i <= fc::lastCharItem; i++ )
     {
-      auto ucs = wchar_t(fc::character[i][fc::UTF8]);
+      const auto ucs = wchar_t(fc::character[i][fc::UTF8]);
-      sInt16 fontpos = getFontPos(ucs);
+      const sInt16 fontpos = getFontPos(ucs);
 
       // Fix for a non-cp437 Linux console with PC charset encoding
       if ( fontpos > 255 || fontpos == NOT_FOUND )
@@ -267,7 +267,7 @@ bool FTermLinux::loadVGAFont()
     if ( isLinuxConsole() )
     {
       // Set the standard vga font 8x16
-      int ret = setScreenFont(fc::__8x16std, 256, 8, 16);
+      const int ret = setScreenFont(fc::__8x16std, 256, 8, 16);
 
       if ( ret != 0 )
         vga_font = false;
@@ -354,7 +354,7 @@ bool FTermLinux::loadOldFont()
     {
       if ( screen_font.data )
       {
-        int ret = setScreenFont ( screen_font.data
+        const int ret = setScreenFont ( screen_font.data
                                       , screen_font.charcount
                                       , screen_font.width
                                       , screen_font.height
@@ -532,7 +532,7 @@ int FTermLinux::getFramebuffer_bpp()
 bool FTermLinux::getScreenFont()
 {
   struct console_font_op font{};
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
   int ret{-1};
 
   if ( fd_tty < 0 )
@@ -581,7 +581,7 @@ bool FTermLinux::getScreenFont()
 //----------------------------------------------------------------------
 bool FTermLinux::getUnicodeMap()
 {
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
   int ret{-1};
 
   if ( fd_tty < 0 )
@@ -596,7 +596,7 @@ bool FTermLinux::getUnicodeMap()
 
   if ( ret != 0 )
   {
-    std::size_t count = screen_unicode_map.entry_ct;
+    const std::size_t count = screen_unicode_map.entry_ct;
 
     if ( errno != ENOMEM || count == 0 )
       return false;
@@ -657,7 +657,7 @@ int FTermLinux::setScreenFont ( uChar fontdata[], uInt count
                               , bool direct)
 {
   struct console_font_op font{};
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
   int ret{-1};
 
   if ( fd_tty < 0 )
@@ -720,7 +720,7 @@ int FTermLinux::setScreenFont ( uChar fontdata[], uInt count
 int FTermLinux::setUnicodeMap (struct unimapdesc* unimap)
 {
   struct unimapinit advice;
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
   int ret{-1};
 
   if ( fd_tty < 0 )
@@ -771,7 +771,7 @@ inline uInt16 FTermLinux::getInputStatusRegisterOne()
 
   // Miscellaneous output (read port)
   static constexpr uInt16 misc_read = 0x3cc;
-  uChar misc_value = fsystem->inPortByte(misc_read);
+  const uChar misc_value = fsystem->inPortByte(misc_read);
   const uInt16 io_base = ( misc_value & 0x01 ) ? 0x3d0 : 0x3b0;
   // 0x3ba : Input status 1 mono/MDA (read port)
   // 0x3da : Input status 1 color/CGA (read port)
@@ -794,7 +794,7 @@ uChar FTermLinux::readAttributeController (uChar index)
 
   fsystem->inPortByte (input_status_1);  // switch to index mode
   fsystem->outPortByte (index & 0x1f, attrib_cntlr_write);  // selects address register
-  uChar res = fsystem->inPortByte (attrib_cntlr_read);  // read from data register
+  const uChar res = fsystem->inPortByte (attrib_cntlr_read);  // read from data register
 
   // Disable access to the palette and unblank the display
   fsystem->inPortByte (input_status_1);  // switch to index mode
@@ -853,7 +853,7 @@ int FTermLinux::setBlinkAsIntensity (bool enable)
   if ( ! fsystem )
     fsystem = FTerm::getFSystem();
 
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
 
   // Test if the blink-bit is used by the screen font (512 characters)
   if ( screen_font.charcount > 256 )
@@ -893,7 +893,7 @@ bool FTermLinux::has9BitCharacters()
   if ( ! fsystem )
     fsystem = FTerm::getFSystem();
 
-  int fd_tty = FTerm::getTTYFileDescriptor();
+  const int fd_tty = FTerm::getTTYFileDescriptor();
 
   if ( fsystem->getuid() != 0 )  // Direct hardware access requires root privileges
     return false;
@@ -905,7 +905,7 @@ bool FTermLinux::has9BitCharacters()
   if ( fsystem->ioctl(fd_tty, KDENABIO, 0) < 0 )
     return false;  // error on KDENABIO
 
-  bool nine_bit_char( getAttributeMode() & 0x04 );
+  const bool nine_bit_char( getAttributeMode() & 0x04 );
 
     // Disable access to VGA I/O ports
   if ( fsystem->ioctl(fd_tty, KDDISABIO, 0) < 0 )
@@ -1282,9 +1282,9 @@ FKey FTermLinux::shiftCtrlAltKeyCorrection (const FKey& key_id)
 //----------------------------------------------------------------------
 inline void FTermLinux::initSpecialCharacter()
 {
-  wchar_t c1 = fc::UpperHalfBlock;
+  const wchar_t c1 = fc::UpperHalfBlock;
-  wchar_t c2 = fc::LowerHalfBlock;
+  const wchar_t c2 = fc::LowerHalfBlock;
-  wchar_t c3 = fc::FullBlock;
+  const wchar_t c3 = fc::FullBlock;
 
   if ( FTerm::charEncode(c1, fc::PC) == FTerm::charEncode(c1, fc::ASCII)
     || FTerm::charEncode(c2, fc::PC) == FTerm::charEncode(c2, fc::ASCII)
@@ -1293,8 +1293,8 @@ inline void FTermLinux::initSpecialCharacter()
     fterm_data->supportShadowCharacter (false);
   }
 
-  wchar_t c4 = fc::RightHalfBlock;
+  const wchar_t c4 = fc::RightHalfBlock;
-  wchar_t c5 = fc::LeftHalfBlock;
+  const wchar_t c5 = fc::LeftHalfBlock;
 
   if ( FTerm::charEncode(c4, fc::PC) == FTerm::charEncode(c4, fc::ASCII)
     || FTerm::charEncode(c5, fc::PC) == FTerm::charEncode(c5, fc::ASCII) )

src/ftermxterminal.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -691,7 +691,7 @@ const FString FTermXTerminal::captureXTermFont()
   {
     fd_set ifds{};
     struct timeval tv{};
-    int stdin_no = FTermios::getStdIn();
+    const int stdin_no = FTermios::getStdIn();
 
     oscPrefix();
     FTerm::putstring (OSC "50;?" BEL);  // get font
@@ -710,7 +710,7 @@ const FString FTermXTerminal::captureXTermFont()
 
       if ( std::scanf("\033]50;%148[^\n]s", temp) == 1 )
       {
-        std::size_t n = std::strlen(temp);
+        const std::size_t n = std::strlen(temp);
 
         // BEL + '\0' = string terminator
         if ( n >= 5 && temp[n - 1] == BEL[0] && temp[n] == '\0' )
@@ -732,7 +732,7 @@ const FString FTermXTerminal::captureXTermTitle()
 
   fd_set ifds{};
   struct timeval tv{};
-  int stdin_no = FTermios::getStdIn();
+  const int stdin_no = FTermios::getStdIn();
 
   FTerm::putstring (CSI "21t");  // get title
   std::fflush(stdout);
@@ -749,7 +749,7 @@ const FString FTermXTerminal::captureXTermTitle()
 
     if ( std::scanf("\033]l%509[^\n]s", temp) == 1 )
     {
-      std::size_t n = std::strlen(temp);
+      const std::size_t n = std::strlen(temp);
 
       // Esc + \ = OSC string terminator
       if ( n >= 2 && temp[n - 2] == ESC[0] && temp[n - 1] == '\\' )

src/ftextview.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -132,15 +132,15 @@ void FTextView::scrollBy (int dx, int dy)
 //----------------------------------------------------------------------
 void FTextView::scrollTo (int x, int y)
 {
-  bool changeX( x != xoffset );
+  const bool changeX( x != xoffset );
-  bool changeY( y != yoffset );
+  const bool changeY( y != yoffset );
 
   if ( ! isShown() || ! (changeX || changeY) )
     return;
 
   if ( changeX && isHorizontallyScrollable() )
   {
-    int xoffset_end = int(maxLineWidth - getTextWidth());
+    const int xoffset_end = int(maxLineWidth - getTextWidth());
     xoffset = x;
 
     if ( xoffset < 0 )
@@ -158,7 +158,7 @@ void FTextView::scrollTo (int x, int y)
 
   if ( changeY && isVerticallyScrollable() )
   {
-    int yoffset_end = int(getRows() - getTextHeight());
+    const int yoffset_end = int(getRows() - getTextHeight());
     yoffset = y;
 
     if ( yoffset < 0 )
@@ -213,7 +213,7 @@ void FTextView::insert (const FString& str, int pos)
                .removeDel()
                .replaceControlCodes()
                .rtrim();
-    auto column_width = getColumnWidth(line);
+    const auto column_width = getColumnWidth(line);
 
     if ( column_width > maxLineWidth )
     {
@@ -221,7 +221,7 @@ void FTextView::insert (const FString& str, int pos)
 
       if ( column_width > getTextWidth() )
       {
-        int hmax = ( maxLineWidth > getTextWidth() )
+        const int hmax = ( maxLineWidth > getTextWidth() )
                          ? int(maxLineWidth) - int(getTextWidth())
                          : 0;
         hbar->setMaximum (hmax);
@@ -236,7 +236,7 @@ void FTextView::insert (const FString& str, int pos)
 
   auto iter = data.begin();
   data.insert (iter + pos, text_split.begin(), text_split.end());
-  int vmax = ( getRows() > getTextHeight() )
+  const int vmax = ( getRows() > getTextHeight() )
                    ? int(getRows()) - int(getTextHeight())
                    : 0;
   vbar->setMaximum (vmax);
@@ -296,7 +296,7 @@ void FTextView::clear()
   else
     drawBorder();
 
-  std::size_t size = getWidth() - 2;
+  const std::size_t size = getWidth() - 2;
 
   if ( size == 0 )
     return;
@@ -314,7 +314,7 @@ void FTextView::clear()
 //----------------------------------------------------------------------
 void FTextView::onKeyPress (FKeyEvent* ev)
 {
-  int idx = int(ev->key());
+  const int idx = int(ev->key());
 
   if ( key_map.find(idx) != key_map.end() )
   {
@@ -346,13 +346,13 @@ void FTextView::onMouseDown (FMouseEvent* ev)
   if ( ! parent )
     return;
 
-  auto dialog = static_cast<FDialog*>(parent);
+  const auto& dialog = static_cast<FDialog*>(parent);
 
   if ( parent->isDialogWidget()
     && dialog->isResizeable()
     && ! dialog->isZoomed() )
   {
-    int b = ev->getButton();
+    const int b = ev->getButton();
     const auto& tp = ev->getTermPos();
     const auto& p = parent->termToWidgetPos(tp);
     parent->setFocus();
@@ -377,11 +377,11 @@ void FTextView::onMouseUp (FMouseEvent* ev)
 
   if ( parent && parent->isDialogWidget() )
   {
-    auto dialog = static_cast<FDialog*>(parent);
+    const auto& dialog = static_cast<FDialog*>(parent);
 
     if ( dialog->isResizeable() && ! dialog->isZoomed() )
     {
-      int b = ev->getButton();
+      const int b = ev->getButton();
       const auto& tp = ev->getTermPos();
       const auto& p = parent->termToWidgetPos(tp);
       parent->setFocus();
@@ -410,11 +410,11 @@ void FTextView::onMouseMove (FMouseEvent* ev)
 
   if ( parent && parent->isDialogWidget() )
   {
-    auto dialog = static_cast<FDialog*>(parent);
+    const auto& dialog = static_cast<FDialog*>(parent);
 
     if ( dialog->isResizeable() && ! dialog->isZoomed() )
     {
-      int b = ev->getButton();
+      const int b = ev->getButton();
       const auto& tp = ev->getTermPos();
       const auto& p = parent->termToWidgetPos(tp);
       parent->setFocus();
@@ -436,7 +436,7 @@ void FTextView::onMouseMove (FMouseEvent* ev)
 //----------------------------------------------------------------------
 void FTextView::onWheel (FWheelEvent* ev)
 {
-  int distance{4};
+  static constexpr int distance = 4;
 
   switch ( ev->getWheel() )
   {
@@ -481,10 +481,10 @@ void FTextView::onFocusOut (FFocusEvent*)
 void FTextView::adjustSize()
 {
   FWidget::adjustSize();
-  std::size_t width = getWidth();
+  const std::size_t width = getWidth();
-  std::size_t height = getHeight();
+  const std::size_t height = getHeight();
-  int last_line = int(getRows());
+  const int last_line = int(getRows());
-  int max_width = int(maxLineWidth);
+  const int max_width = int(maxLineWidth);
 
   if ( xoffset >= max_width - int(width) - nf_offset )
     xoffset = max_width - int(width) - nf_offset - 1;
@@ -501,7 +501,7 @@ void FTextView::adjustSize()
   if ( height < 3 )
     return;
 
-  int vmax = ( last_line > int(height) - 2 + nf_offset )
+  const int vmax = ( last_line > int(height) - 2 + nf_offset )
                    ? last_line - int(height) + 2 - nf_offset
                    : 0;
   vbar->setMaximum (vmax);
@@ -514,7 +514,7 @@ void FTextView::adjustSize()
   if ( width < 3 )
     return;
 
-  int hmax = ( max_width > int(width) - nf_offset - 2 )
+  const int hmax = ( max_width > int(width) - nf_offset - 2 )
                    ? max_width - int(width) + nf_offset + 2
                    : 0;
   hbar->setMaximum (hmax);
@@ -614,7 +614,7 @@ void FTextView::drawBorder()
     if ( isMonochron() )
       setReverse(true);
 
-    FRect box(FPoint(1, 1), getSize());
+    const FRect box(FPoint(1, 1), getSize());
     finalcut::drawListBorder (this, box);
 
     if ( isMonochron() )
@@ -654,12 +654,12 @@ void FTextView::drawText()
 
   for (std::size_t y{0}; y < num; y++)  // Line loop
   {
-    std::size_t n = std::size_t(yoffset) + y;
+    const std::size_t n = std::size_t(yoffset) + y;
-    std::size_t pos = std::size_t(xoffset) + 1;
+    const std::size_t pos = std::size_t(xoffset) + 1;
+    const auto text_width = getTextWidth();
+    const FString line(getColumnSubString(data[n], pos, text_width));
+    const auto column_width = getColumnWidth(line);
     std::size_t trailing_whitespace{0};
-    auto text_width = getTextWidth();
-    FString line(getColumnSubString(data[n], pos, text_width));
-    auto column_width = getColumnWidth(line);
     print() << FPoint(2, 2 - nf_offset + int(y));
 
     for (auto&& ch : line)  // Column loop
@@ -685,7 +685,7 @@ void FTextView::drawText()
 //----------------------------------------------------------------------
 inline bool FTextView::useFDialogBorder()
 {
-  auto parent = getParentWidget();
+  const auto& parent = getParentWidget();
   bool use_fdialog_border{false};
 
   if ( parent
@@ -707,7 +707,7 @@ inline bool FTextView::isPrintable (wchar_t ch)
 {
   // Check for printable characters
 
-  bool utf8 = ( getEncoding() == fc::UTF8 ) ? true : false;
+  const bool utf8 = ( getEncoding() == fc::UTF8 ) ? true : false;
 
   if ( (utf8 && std::iswprint(std::wint_t(ch)))
     || (!utf8 && std::isprint(ch)) )
@@ -725,8 +725,8 @@ void FTextView::processChanged()
 //----------------------------------------------------------------------
 void FTextView::changeOnResize()
 {
-  std::size_t width  = getWidth();
+  const std::size_t width  = getWidth();
-  std::size_t height = getHeight();
+  const std::size_t height = getHeight();
 
   if ( isNewFont() )
   {
@@ -746,9 +746,9 @@ void FTextView::changeOnResize()
 //----------------------------------------------------------------------
 void FTextView::cb_VBarChange (FWidget*, FDataPtr)
 {
-  FScrollbar::sType scrollType = vbar->getScrollType();
+  const FScrollbar::sType scrollType = vbar->getScrollType();
+  static constexpr int wheel_distance = 4;
   int distance{1};
-  int wheel_distance{4};
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
     update_scrollbar = true;
@@ -797,9 +797,9 @@ void FTextView::cb_VBarChange (FWidget*, FDataPtr)
 //----------------------------------------------------------------------
 void FTextView::cb_HBarChange (FWidget*, FDataPtr)
 {
-  FScrollbar::sType scrollType = hbar->getScrollType();
+  const FScrollbar::sType scrollType = hbar->getScrollType();
+  static constexpr int wheel_distance = 4;
   int distance{1};
-  int wheel_distance{4};
 
   if ( scrollType >= FScrollbar::scrollStepBackward )
     update_scrollbar = true;

src/ftogglebutton.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -411,7 +411,7 @@ void FToggleButton::drawLabel()
   if ( text.isNull() || text.isEmpty() )
     return;
 
-  FString txt(text);
+  const FString txt(text);
   FString label_text{};
   auto hotkeypos = finalcut::getHotkeyPos(txt, label_text);
   print() << FPoint(1 + int(label_offset_pos), 1);
@@ -436,7 +436,7 @@ void FToggleButton::onKeyPress (FKeyEvent* ev)
   if ( ! isEnabled() )
     return;
 
-  FKey key = ev->key();
+  const FKey key = ev->key();
 
   switch ( key )
   {
@@ -559,9 +559,9 @@ void FToggleButton::drawText (FString&& label_text, std::size_t hotkeypos)
 //----------------------------------------------------------------------
 void FToggleButton::correctSize (FSize& size)
 {
-  std::size_t hotkey_mark = ( getHotkey(text) ) ? 1 : 0;
+  const std::size_t hotkey_mark = ( getHotkey(text) ) ? 1 : 0;
-  std::size_t column_width = getColumnWidth(text);
+  const std::size_t column_width = getColumnWidth(text);
-  std::size_t min_width = button_width + column_width - hotkey_mark;
+  const std::size_t min_width = button_width + column_width - hotkey_mark;
 
   if ( size.getWidth() < min_width )
     size.setWidth(min_width);

src/ftooltip.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -50,7 +50,7 @@ FToolTip::FToolTip (const FString& txt, FWidget* parent)
 //----------------------------------------------------------------------
 FToolTip::~FToolTip()  // destructor
 {
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
 
   if ( fapp->isQuit() )
     return;
@@ -131,8 +131,6 @@ void FToolTip::draw()
 //----------------------------------------------------------------------
 void FToolTip::calculateDimensions()
 {
-  int x{}, y{};
-  auto r = getRootWidget();
   max_line_width = 0;
   text_components = text.split("\n");
   text_num_lines = std::size_t(text_components.size());
@@ -148,8 +146,10 @@ void FToolTip::calculateDimensions()
       max_line_width = column_width;
   }
 
-  std::size_t h = text_num_lines + 2;
+  int x{}, y{};
-  std::size_t w = max_line_width + 4;
+  const std::size_t h = text_num_lines + 2;
+  const std::size_t w = max_line_width + 4;
+  const auto& r = getRootWidget();
 
   if ( r )
   {

src/fvterm.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2016-2019 Markus Gans                                      *
+* Copyright 2016-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -104,7 +104,7 @@ FVTerm& FVTerm::operator << (const FTermBuffer& term_buffer)
 //----------------------------------------------------------------------
 FPoint FVTerm::getPrintCursor()
 {
-  auto win = getPrintArea();
+  const auto& win = getPrintArea();
 
   if ( win )
     return FPoint ( win->offset_left + win->cursor_x
@@ -121,8 +121,8 @@ void FVTerm::setTermXY (int x, int y)
   if ( term_pos->getX() == x && term_pos->getY() == y )
     return;
 
-  int term_width = int(getColumnNumber());
+  const int term_width = int(getColumnNumber());
-  int term_height = int(getLineNumber());
+  const int term_height = int(getLineNumber());
 
   if ( x >= term_width && term_width > 0 )
   {
@@ -136,9 +136,8 @@ void FVTerm::setTermXY (int x, int y)
   if ( y >= term_height )
     y = term_height - 1;
 
-  int term_x = term_pos->getX();
+  const int term_x = term_pos->getX();
-  int term_y = term_pos->getY();
+  const int term_y = term_pos->getY();
-
   const char* move_str = FTerm::moveCursorString (term_x, term_y, x, y);
 
   if ( move_str )
@@ -176,9 +175,9 @@ FColor FVTerm::rgb2ColorIndex (uInt8 r, uInt8 g, uInt8 b)
 {
   // Converts a 24-bit RGB color to a 256-color compatible approximation
 
-  FColor ri = (((r * 5) + 127) / 255) * 36;
+  const FColor ri = (((r * 5) + 127) / 255) * 36;
-  FColor gi = (((g * 5) + 127) / 255) * 6;
+  const FColor gi = (((g * 5) + 127) / 255) * 6;
-  FColor bi = (((b * 5) + 127) / 255);
+  const FColor bi = (((b * 5) + 127) / 255);
   return 16 + ri + gi + bi;
 }
 
@@ -259,7 +258,7 @@ void FVTerm::updateTerminal()
     }
   }
 
-  auto data = getFTerm().getFTermData();
+  const auto& data = getFTerm().getFTermData();
 
   // Checks if the resizing of the terminal is not finished
   if ( data && data->hasTermResized() )
@@ -406,7 +405,7 @@ int FVTerm::print (const std::vector<FChar>& term_string)
 int FVTerm::print (FTermArea* area, const std::vector<FChar>& term_string)
 {
   int len{0};
-  uInt tabstop = uInt(getTabstop());
+  const uInt tabstop = uInt(getTabstop());
 
   if ( ! area )
     return -1;
@@ -508,13 +507,13 @@ int FVTerm::print (FTermArea* area, FChar& term_char)
   if ( ! area )
     return -1;
 
-  int width  = area->width;
+  const int width  = area->width;
-  int height = area->height;
+  const int height = area->height;
-  int rsh    = area->right_shadow;
+  const int rsh    = area->right_shadow;
-  int bsh    = area->bottom_shadow;
+  const int bsh    = area->bottom_shadow;
-  int ax     = area->cursor_x - 1;
+  const int ax     = area->cursor_x - 1;
-  int ay     = area->cursor_y - 1;
+  const int ay     = area->cursor_y - 1;
-  std::size_t char_width = getColumnWidth(nc);  // add column width
+  const std::size_t char_width = getColumnWidth(nc);  // add column width
 
   if ( char_width == 0 && ! nc.attr.bit.fullwidth_padding )
     return 0;
@@ -524,7 +523,7 @@ int FVTerm::print (FTermArea* area, FChar& term_char)
     && ax < area->width + area->right_shadow
     && ay < area->height + area->bottom_shadow )
   {
-    int line_len = area->width + area->right_shadow;
+    const int line_len = area->width + area->right_shadow;
     auto ac = &area->data[ay * line_len + ax];  // area character
 
     if ( *ac != nc )  // compare with an overloaded operator
@@ -659,12 +658,12 @@ void FVTerm::resizeArea ( const FRect& box
 {
   // Resize the virtual window to a new size.
 
-  int offset_left = box.getX();
+  const int offset_left = box.getX();
-  int offset_top  = box.getY();
+  const int offset_top  = box.getY();
-  int width = int(box.getWidth());
+  const int width = int(box.getWidth());
-  int height = int(box.getHeight());
+  const int height = int(box.getHeight());
-  int rsw = int(shadow.getWidth());
+  const int rsw = int(shadow.getWidth());
-  int bsh = int(shadow.getHeight());
+  const int bsh = int(shadow.getHeight());
 
   assert ( offset_top >= 0 );
   assert ( width > 0 && width + rsw > 0 );
@@ -690,9 +689,9 @@ void FVTerm::resizeArea ( const FRect& box
   }
 
   bool realloc_success{false};
-  std::size_t full_width = std::size_t(width) + std::size_t(rsw);
+  const std::size_t full_width = std::size_t(width) + std::size_t(rsw);
-  std::size_t full_height = std::size_t(height) + std::size_t(bsh);
+  const std::size_t full_height = std::size_t(height) + std::size_t(bsh);
-  std::size_t area_size = full_width * full_height;
+  const std::size_t area_size = full_width * full_height;
 
   if ( area->height + area->bottom_shadow != int(full_height) )
   {
@@ -718,7 +717,7 @@ void FVTerm::resizeArea ( const FRect& box
   area->bottom_shadow = bsh;
   area->has_changes   = false;
 
-  FSize size(full_width, full_height);
+  const FSize size(full_width, full_height);
   setTextToDefault (area, size);
 }
 
@@ -774,11 +773,11 @@ void FVTerm::restoreVTerm (const FRect& box)
 
   for (int ty{0}; ty < h; ty++)
   {
-    int ypos = y + ty;
+    const int ypos = y + ty;
 
     for (int tx{0}; tx < w; tx++)
     {
-      int xpos = x + tx;
+      const int xpos = x + tx;
       auto tc = &vterm->data[ypos * vterm->width + xpos];  // terminal character
       auto sc = generateCharacter(FPoint(xpos, ypos));  // shown character
       std::memcpy (tc, &sc, sizeof(*tc));
@@ -809,14 +808,14 @@ bool FVTerm::updateVTermCursor (FTermArea* area)
   if ( area->input_cursor_visible )
   {
     // area offset
-    int ax  = area->offset_left;
+    const int ax  = area->offset_left;
-    int ay  = area->offset_top;
+    const int ay  = area->offset_top;
     // area cursor position
-    int cx = area->input_cursor_x;
+    const int cx = area->input_cursor_x;
-    int cy = area->input_cursor_y;
+    const int cy = area->input_cursor_y;
     // terminal position
-    int x  = ax + cx;
+    const int x  = ax + cx;
-    int y  = ay + cy;
+    const int y  = ay + cy;
 
     if ( isInsideArea (FPoint(cx, cy), area)
       && isInsideTerminal (FPoint(x, y))
@@ -855,8 +854,8 @@ void FVTerm::getArea (const FPoint& pos, FTermArea* area)
   if ( ! area )
     return;
 
-  int ax = pos.getX() - 1;
+  const int ax = pos.getX() - 1;
-  int ay = pos.getY() - 1;
+  const int ay = pos.getY() - 1;
   int y_end{}, length{};
 
   if ( area->height + ay > vterm->height )
@@ -891,12 +890,12 @@ void FVTerm::getArea (const FRect& box, FTermArea* area)
   if ( ! area )
     return;
 
-  int x = box.getX();
+  const int x = box.getX();
-  int y = box.getY();
+  const int y = box.getY();
-  int w = int(box.getWidth());
+  const int w = int(box.getWidth());
-  int h = int(box.getHeight());
+  const int h = int(box.getHeight());
-  int dx = x - area->offset_left + 1;
+  const int dx = x - area->offset_left + 1;
-  int dy = y - area->offset_top + 1;
+  const int dy = y - area->offset_top + 1;
   int y_end{}, length{};
 
   if ( x < 0 || y < 0 )
@@ -917,7 +916,7 @@ void FVTerm::getArea (const FRect& box, FTermArea* area)
 
   for (int _y = 0; _y < y_end; _y++)  // line loop
   {
-    int line_len = area->width + area->right_shadow;
+    const int line_len = area->width + area->right_shadow;
     auto tc = &vterm->data[(y + _y - 1) * vterm->width + x - 1];  // terminal character
     auto ac = &area->data[(dy + _y) * line_len + dx];  // area character
     std::memcpy (ac, tc, sizeof(*ac) * unsigned(length));
@@ -939,9 +938,9 @@ void FVTerm::putArea (FTermArea* area)
     return;
 
   int ax  = area->offset_left;
-  int ay  = area->offset_top;
+  const int ay  = area->offset_top;
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
-  int height = area->height + area->bottom_shadow;
+  const int height = area->height + area->bottom_shadow;
   int ol{0};  // Outside left
   int y_end{};
 
@@ -981,7 +980,7 @@ void FVTerm::putArea (FTermArea* area)
     {
       // Global terminal positions
       int tx = ax + x;
-      int ty = ay + y;
+      const int ty = ay + y;
 
       if ( tx < 0 || ty < 0 )
         continue;
@@ -1027,9 +1026,9 @@ void FVTerm::putArea (const FPoint& pos, FTermArea* area)
     return;
 
   int ax = pos.getX() - 1;
-  int ay = pos.getY() - 1;
+  const int ay = pos.getY() - 1;
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
-  int height = area->height + area->bottom_shadow;
+  const int height = area->height + area->bottom_shadow;
   int ol{0};  // outside left
   int y_end{}, length{};
 
@@ -1066,8 +1065,8 @@ void FVTerm::putArea (const FPoint& pos, FTermArea* area)
       // Line has one or more transparent characters
       for (int x{0}; x < length; x++)  // column loop
       {
-        int cx = ax + x;
+        const int cx = ax + x;
-        int cy = ay + y;
+        const int cy = ay + y;
         ac = &area->data[y * width + ol + x];
         tc = &vterm->data[cy * vterm->width + cx];
         putAreaCharacter (FPoint(cx + 1, cy + 1), area->widget, ac, tc);
@@ -1098,14 +1097,14 @@ void FVTerm::scrollAreaForward (FTermArea* area)
   if ( area->height <= 1 )
     return;
 
-  int length = area->width;
+  const int length = area->width;
-  int total_width = area->width + area->right_shadow;
+  const int total_width = area->width + area->right_shadow;
-  int y_max = area->height - 1;
+  const int y_max = area->height - 1;
 
   for (int y{0}; y < y_max; y++)
   {
-    int pos1 = y * total_width;
+    const int pos1 = y * total_width;
-    int pos2 = (y + 1) * total_width;
+    const int pos2 = (y + 1) * total_width;
     auto sc = &area->data[pos2];  // source character
     dc = &area->data[pos1];
     std::memcpy (dc, sc, sizeof(*dc) * unsigned(length));
@@ -1156,14 +1155,14 @@ void FVTerm::scrollAreaReverse (FTermArea* area)
   if ( area->height <= 1 )
     return;
 
-  int length = area->width;
+  const int length = area->width;
-  int total_width = area->width + area->right_shadow;
+  const int total_width = area->width + area->right_shadow;
-  int y_max = area->height - 1;
+  const int y_max = area->height - 1;
 
   for (int y = y_max; y > 0; y--)
   {
-    int pos1 = (y - 1) * total_width;
+    const int pos1 = (y - 1) * total_width;
-    int pos2 = y * total_width;
+    const int pos2 = y * total_width;
     auto sc = &area->data[pos1];  // source character
     dc = &area->data[pos2];
     std::memcpy (dc, sc, sizeof(*dc) * unsigned(length));
@@ -1216,7 +1215,7 @@ void FVTerm::clearArea (FTermArea* area, int fillchar)
     return;
   }
 
-  uInt w = uInt(area->width + area->right_shadow);
+  const uInt w = uInt(area->width + area->right_shadow);
 
   if ( area->right_shadow == 0 )
   {
@@ -1243,7 +1242,7 @@ void FVTerm::clearArea (FTermArea* area, int fillchar)
 
   for (int i{0}; i < area->bottom_shadow; i++)
   {
-    int y = area->height + i;
+    const int y = area->height + i;
     area->changes[y].xmin = 0;
     area->changes[y].xmax = w - 1;
     area->changes[y].trans_count = w;
@@ -1384,7 +1383,7 @@ FVTerm::covered_state FVTerm::isCovered ( const FPoint& pos
 
     for (auto& win_obj : *FWidget::getWindowList())
     {
-      auto win = win_obj->getVWin();
+      const auto& win = win_obj->getVWin();
 
       if ( ! win )
         continue;
@@ -1392,18 +1391,17 @@ FVTerm::covered_state FVTerm::isCovered ( const FPoint& pos
       if ( ! win->visible )
         continue;
 
-      int win_x = win->offset_left;
+      const int win_x = win->offset_left;
-      int win_y = win->offset_top;
+      const int win_y = win->offset_top;
-      FRect geometry ( win_x
+      const FRect geometry ( win_x , win_y
-                     , win_y
           , std::size_t(win->width) + std::size_t(win->right_shadow)
           , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
 
       if ( found && geometry.contains(pos) )
       {
-        int width = win->width + win->right_shadow;
+        const int width = win->width + win->right_shadow;
-        int x = pos.getX();
+        const int x = pos.getX();
-        int y = pos.getY();
+        const int y = pos.getY();
         auto tmp = &win->data[(y - win_y) * width + (x - win_x)];
 
         if ( tmp->attr.bit.trans_shadow )
@@ -1432,11 +1430,11 @@ void FVTerm::updateOverlappedColor ( FTermArea* area
 {
   // Add the overlapping color to this character
 
-  int x = area_pos.getX();
+  const int x = area_pos.getX();
-  int y = area_pos.getY();
+  const int y = area_pos.getY();
-  int tx = terminal_pos.getX();
+  const int tx = terminal_pos.getX();
-  int ty = terminal_pos.getY();
+  const int ty = terminal_pos.getY();
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
   // Area character
   auto ac = &area->data[y * width + x];
   // Terminal character
@@ -1470,8 +1468,8 @@ void FVTerm::updateOverlappedCharacter ( FTermArea* area
   // Restore one character on vterm
 
   // Terminal character
-  int  tx = terminal_pos.getX();
+  const int tx = terminal_pos.getX();
-  int  ty = terminal_pos.getY();
+  const int ty = terminal_pos.getY();
   auto tc = &vterm->data[ty * vterm->width + tx];
   // Overlapped character
   auto oc = getCoveredCharacter (terminal_pos + FPoint(1, 1), area->widget);
@@ -1486,15 +1484,15 @@ void FVTerm::updateShadedCharacter ( FTermArea* area
 {
   // Get covered character + add the current color
 
-  int x = area_pos.getX();
+  const int x = area_pos.getX();
-  int y = area_pos.getY();
+  const int y = area_pos.getY();
-  int tx = terminal_pos.getX();
+  const int tx = terminal_pos.getX();
-  int ty = terminal_pos.getY();
+  const int ty = terminal_pos.getY();
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
   // Area character
-  auto ac = &area->data[y * width + x];
+  const auto ac = &area->data[y * width + x];
   // Terminal character
-  auto tc = &vterm->data[ty * vterm->width + tx];
+  const auto tc = &vterm->data[ty * vterm->width + tx];
   // Overlapped character
   auto oc = getCoveredCharacter (terminal_pos + FPoint(1, 1), area->widget);
   oc.fg_color = ac->fg_color;
@@ -1521,13 +1519,13 @@ void FVTerm::updateInheritBackground ( FTermArea* area
 {
   // Add the covered background to this character
 
-  int x = area_pos.getX();
+  const int x = area_pos.getX();
-  int y = area_pos.getY();
+  const int y = area_pos.getY();
-  int tx = terminal_pos.getX();
+  const int tx = terminal_pos.getX();
-  int ty = terminal_pos.getY();
+  const int ty = terminal_pos.getY();
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
   // Area character
-  auto ac = &area->data[y * width + x];
+  const auto ac = &area->data[y * width + x];
   // Terminal character
   auto tc = &vterm->data[ty * vterm->width + tx];
   // New character
@@ -1547,13 +1545,13 @@ void FVTerm::updateCharacter ( FTermArea* area
 {
   // Copy a area character to the virtual terminal
 
-  int x = area_pos.getX();
+  const int x = area_pos.getX();
-  int y = area_pos.getY();
+  const int y = area_pos.getY();
-  int tx = terminal_pos.getX();
+  const int tx = terminal_pos.getX();
-  int ty = terminal_pos.getY();
+  const int ty = terminal_pos.getY();
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
   // Area character
-  auto ac = &area->data[y * width + x];
+  const auto ac = &area->data[y * width + x];
   // Terminal character
   auto tc = &vterm->data[ty * vterm->width + tx];
   std::memcpy (tc, ac, sizeof(*tc));
@@ -1569,14 +1567,14 @@ bool FVTerm::updateVTermCharacter ( FTermArea* area
                                   , const FPoint& area_pos
                                   , const FPoint& terminal_pos )
 {
-  int x = area_pos.getX();
+  const int x = area_pos.getX();
-  int y = area_pos.getY();
+  const int y = area_pos.getY();
-  int width = area->width + area->right_shadow;
+  const int width = area->width + area->right_shadow;
   // Area character
   auto ac = &area->data[y * width + x];
 
   // Get covered state
-  auto is_covered = isCovered(terminal_pos, area);
+  const auto is_covered = isCovered(terminal_pos, area);
 
   if ( is_covered == fully_covered )
     return false;
@@ -1619,7 +1617,7 @@ void FVTerm::updateVTerm()
     vdesktop->has_changes = false;
   }
 
-  FWidget* widget = static_cast<FWidget*>(vterm->widget);
+  const FWidget* widget = static_cast<FWidget*>(vterm->widget);
 
   if ( ! widget->getWindowList() || widget->getWindowList()->empty() )
     return;
@@ -1696,8 +1694,8 @@ bool FVTerm::isInsideArea (const FPoint& pos, FTermArea* area)
 {
   // Check whether the coordinates are within the area
 
-  auto aw = std::size_t(area->width);
+  const auto aw = std::size_t(area->width);
-  auto ah = std::size_t(area->height);
+  const auto ah = std::size_t(area->height);
   FRect area_geometry(0, 0, aw, ah);
 
   if ( area_geometry.contains(pos) )
@@ -1711,8 +1709,8 @@ FChar FVTerm::generateCharacter (const FPoint& pos)
 {
   // Generates characters for a given position considering all areas
 
-  int x = pos.getX();
+  const int x = pos.getX();
-  int y = pos.getY();
+  const int y = pos.getY();
   auto sc = &vdesktop->data[y * vdesktop->width + x];  // shown character
 
   if ( ! FWidget::getWindowList() || FWidget::getWindowList()->empty() )
@@ -1720,22 +1718,21 @@ FChar FVTerm::generateCharacter (const FPoint& pos)
 
   for (auto& win_obj : *FWidget::getWindowList())
   {
-    auto win = win_obj->getVWin();
+    const auto& win = win_obj->getVWin();
 
     if ( ! win || ! win->visible )
       continue;
 
-    int win_x = win->offset_left;
+    const int win_x = win->offset_left;
-    int win_y = win->offset_top;
+    const int win_y = win->offset_top;
-    FRect geometry ( win_x
+    const FRect geometry ( win_x, win_y
-                   , win_y
         , std::size_t(win->width) + std::size_t(win->right_shadow)
         , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
 
     // Window is visible and contains current character
     if ( geometry.contains(x, y) )
     {
-      int line_len = win->width + win->right_shadow;
+      const int line_len = win->width + win->right_shadow;
       auto tmp = &win->data[(y - win_y) * line_len + (x - win_x)];
 
       if ( ! tmp->attr.bit.transparent )   // Current character not transparent
@@ -1784,16 +1781,10 @@ FChar FVTerm::getCharacter ( character_type char_type
 {
   // Gets the overlapped or the covered character for a given position
 
-  int x = pos.getX() - 1;
+  const int x = pos.getX() - 1;
-  int y = pos.getY() - 1;
+  const int y = pos.getY() - 1;
-  int xx = x;
+  int xx = ( x > 0 ) ? x : 0;
-  int yy = y;
+  int yy = ( y > 0 ) ? y : 0;
-
-  if ( xx < 0 )
-    xx = 0;
-
-  if ( yy < 0 )
-    yy = 0;
 
   if ( xx >= vterm->width )
     xx = vterm->width - 1;
@@ -1807,8 +1798,8 @@ FChar FVTerm::getCharacter ( character_type char_type
     return *cc;
 
   // Get the window layer of this object
-  auto w = static_cast<FWidget*>(obj);
+  const auto& w = static_cast<FWidget*>(obj);
-  int layer = FWindow::getWindowLayer(w);
+  const int layer = FWindow::getWindowLayer(w);
 
   for (auto&& win_obj : *FWidget::getWindowList())
   {
@@ -1823,13 +1814,12 @@ FChar FVTerm::getCharacter ( character_type char_type
 
     if ( obj && win_obj != obj && significant_char )
     {
-      auto win = win_obj->getVWin();
+      const auto& win = win_obj->getVWin();
 
       if ( ! win || ! win->visible )
         continue;
 
-      FRect geometry ( win->offset_left
+      const FRect geometry ( win->offset_left, win->offset_top
-                     , win->offset_top
           , std::size_t(win->width) + std::size_t(win->right_shadow)
           , std::size_t(win->height) + std::size_t(win->bottom_shadow) );
 
@@ -2016,11 +2006,11 @@ void FVTerm::putAreaCharacter ( const FPoint& pos, FVTerm* obj
 void FVTerm::getAreaCharacter ( const FPoint& pos, FTermArea* area
                               , FChar*& cc )
 {
-  int area_x = area->offset_left;
+  const int area_x = area->offset_left;
-  int area_y = area->offset_top;
+  const int area_y = area->offset_top;
-  int line_len = area->width + area->right_shadow;
+  const int line_len = area->width + area->right_shadow;
-  int x = pos.getX();
+  const int x = pos.getX();
-  int y = pos.getY();
+  const int y = pos.getY();
   auto tmp = &area->data[(y - area_y) * line_len + (x - area_x)];
 
   // Current character not transparent
@@ -2053,12 +2043,12 @@ bool FVTerm::clearTerm (int fillchar)
 {
   // Clear the real terminal and put cursor at home
 
-  auto& cl = TCAP(fc::t_clear_screen);
+  const auto& cl = TCAP(fc::t_clear_screen);
-  auto& cd = TCAP(fc::t_clr_eos);
+  const auto& cd = TCAP(fc::t_clr_eos);
-  auto& cb = TCAP(fc::t_clr_eol);
+  const auto& cb = TCAP(fc::t_clr_eol);
-  bool ut = FTermcap::background_color_erase;
+  const bool ut = FTermcap::background_color_erase;
   auto next = &next_attribute;
-  bool normal = FTerm::isNormal(next);
+  const bool normal = FTerm::isNormal(next);
   appendAttributes(next);
 
   if ( ! ( (cl || cd || cb) && (normal || ut) )
@@ -2099,7 +2089,7 @@ bool FVTerm::clearTerm (int fillchar)
 bool FVTerm::clearFullArea (FTermArea* area, FChar& nc)
 {
   // Clear area
-  int area_size = area->width * area->height;
+  const int area_size = area->width * area->height;
   std::fill_n (area->data, area_size, nc);
 
   if ( area != vdesktop )  // Is the area identical to the desktop?
@@ -2130,12 +2120,12 @@ bool FVTerm::clearFullArea (FTermArea* area, FChar& nc)
 void FVTerm::clearAreaWithShadow (FTermArea* area, FChar& nc)
 {
   FChar t_char = nc;
-  int total_width = area->width + area->right_shadow;
+  const int total_width = area->width + area->right_shadow;
   t_char.attr.bit.transparent = true;
 
   for (int y{0}; y < area->height; y++)
   {
-    int pos = y * total_width;
+    const int pos = y * total_width;
     // Clear area
     std::fill_n (&area->data[pos], total_width, nc);
     // Make right shadow transparent
@@ -2145,7 +2135,7 @@ void FVTerm::clearAreaWithShadow (FTermArea* area, FChar& nc)
   // Make bottom shadow transparent
   for (int y{0}; y < area->bottom_shadow; y++)
   {
-    int pos = total_width * (y + area->height);
+    const int pos = total_width * (y + area->height);
     std::fill_n (&area->data[pos], total_width, t_char);
   }
 }
@@ -2157,14 +2147,14 @@ bool FVTerm::canClearToEOL (uInt xmin, uInt y)
   // => clear to end of line
 
   FTermArea*& vt = vterm;
-  auto& ce = TCAP(fc::t_clr_eol);
+  const auto& ce = TCAP(fc::t_clr_eol);
   auto min_char = &vt->data[y * uInt(vt->width) + xmin];
 
   if ( ce && min_char->ch == ' ' )
   {
     uInt beginning_whitespace = 1;
-    bool normal = FTerm::isNormal(min_char);
+    const bool normal = FTerm::isNormal(min_char);
-    bool& ut = FTermcap::background_color_erase;
+    const bool& ut = FTermcap::background_color_erase;
 
     for (uInt x = xmin + 1; x < uInt(vt->width); x++)
     {
@@ -2192,14 +2182,14 @@ bool FVTerm::canClearLeadingWS (uInt& xmin, uInt y)
   // => clear from xmin to beginning of line
 
   FTermArea*& vt = vterm;
-  auto& cb = TCAP(fc::t_clr_bol);
+  const auto& cb = TCAP(fc::t_clr_bol);
   auto first_char = &vt->data[y * uInt(vt->width)];
 
   if ( cb && first_char->ch == ' ' )
   {
     uInt leading_whitespace = 1;
-    bool normal = FTerm::isNormal(first_char);
+    const bool normal = FTerm::isNormal(first_char);
-    bool& ut = FTermcap::background_color_erase;
+    const bool& ut = FTermcap::background_color_erase;
 
     for (uInt x{1}; x < uInt(vt->width); x++)
     {
@@ -2230,14 +2220,14 @@ bool FVTerm::canClearTrailingWS (uInt& xmax, uInt y)
   // => clear from xmax to end of line
 
   FTermArea*& vt = vterm;
-  auto& ce = TCAP(fc::t_clr_eol);
+  const auto& ce = TCAP(fc::t_clr_eol);
   auto last_char = &vt->data[(y + 1) * uInt(vt->width) - 1];
 
   if ( ce && last_char->ch == ' ' )
   {
     uInt trailing_whitespace = 1;
-    bool normal = FTerm::isNormal(last_char);
+    const bool normal = FTerm::isNormal(last_char);
-    bool& ut = FTermcap::background_color_erase;
+    const bool& ut = FTermcap::background_color_erase;
 
     for (uInt x = uInt(vt->width) - 1; x >  0 ; x--)
     {
@@ -2302,8 +2292,8 @@ void FVTerm::printRange ( uInt xmin, uInt xmax, uInt y
   for (uInt x = xmin; x <= xmax; x++)
   {
     FTermArea*& vt = vterm;
-    auto& ec = TCAP(fc::t_erase_chars);
+    const auto& ec = TCAP(fc::t_erase_chars);
-    auto& rp = TCAP(fc::t_repeat_char);
+    const auto& rp = TCAP(fc::t_repeat_char);
     auto print_char = &vt->data[y * uInt(vt->width) + x];
     print_char->attr.bit.printed = true;
     replaceNonPrintableFullwidth (x, print_char);
@@ -2384,7 +2374,7 @@ void FVTerm::printCharacter ( uInt& x, uInt y, bool min_and_not_max
 void FVTerm::printFullWidthCharacter ( uInt& x, uInt y
                                      , FChar*& print_char )
 {
-  auto vt = vterm;
+  const auto vt = vterm;
   auto next_char = &vt->data[y * uInt(vt->width) + x + 1];
 
   if ( print_char->attr.byte[0] == next_char->attr.byte[0]
@@ -2423,7 +2413,7 @@ void FVTerm::printFullWidthCharacter ( uInt& x, uInt y
 void FVTerm::printFullWidthPaddingCharacter ( uInt& x, uInt y
                                             , FChar*& print_char)
 {
-  auto vt = vterm;
+  const auto vt = vterm;
   auto prev_char = &vt->data[y * uInt(vt->width) + x - 1];
 
   if ( print_char->attr.byte[0] == prev_char->attr.byte[0]
@@ -2434,8 +2424,8 @@ void FVTerm::printFullWidthPaddingCharacter ( uInt& x, uInt y
     && isFullWidthPaddingChar(print_char) )
   {
     // Move cursor one character to the left
-    auto& le = TCAP(fc::t_cursor_left);
+    const auto& le = TCAP(fc::t_cursor_left);
-    auto& RI = TCAP(fc::t_parm_right_cursor);
+    const auto& RI = TCAP(fc::t_parm_right_cursor);
 
     if ( le )
       appendOutputBuffer (le);
@@ -2468,14 +2458,14 @@ void FVTerm::printFullWidthPaddingCharacter ( uInt& x, uInt y
 void FVTerm::printHalfCovertFullWidthCharacter ( uInt& x, uInt y
                                                , FChar*& print_char )
 {
-  auto vt = vterm;
+  const auto vt = vterm;
   auto prev_char = &vt->data[y * uInt(vt->width) + x - 1];
 
   if ( isFullWidthChar(prev_char) && ! isFullWidthPaddingChar(print_char) )
   {
     // Move cursor one character to the left
-    auto& le = TCAP(fc::t_cursor_left);
+    const auto& le = TCAP(fc::t_cursor_left);
-    auto& RI = TCAP(fc::t_parm_right_cursor);
+    const auto& RI = TCAP(fc::t_parm_right_cursor);
 
     if ( le )
       appendOutputBuffer (le);
@@ -2518,15 +2508,15 @@ FVTerm::exit_state FVTerm::eraseCharacters ( uInt& x, uInt xmax, uInt y
 {
   // Erase a number of characters to draw simple whitespaces
 
-  FTermArea*& vt = vterm;
+  const auto& vt = vterm;
-  auto& ec = TCAP(fc::t_erase_chars);
+  const auto& ec = TCAP(fc::t_erase_chars);
   auto print_char = &vt->data[y * uInt(vt->width) + x];
 
   if ( ! ec || print_char->ch != ' ' )
     return not_used;
 
   uInt whitespace{1};
-  bool normal = FTerm::isNormal(print_char);
+  const bool normal = FTerm::isNormal(print_char);
 
   for (uInt i = x + 1; i <= xmax; i++)
   {
@@ -2545,8 +2535,8 @@ FVTerm::exit_state FVTerm::eraseCharacters ( uInt& x, uInt xmax, uInt y
   }
   else
   {
-    uInt start_pos = x;
+    const uInt start_pos = x;
-    bool& ut = FTermcap::background_color_erase;
+    const bool& ut = FTermcap::background_color_erase;
 
     if ( whitespace > erase_char_length + cursor_address_length
       && (ut || normal) )
@@ -2580,8 +2570,8 @@ FVTerm::exit_state FVTerm::repeatCharacter (uInt& x, uInt xmax, uInt y)
 {
   // Repeat one character n-fold
 
-  FTermArea*& vt = vterm;
+  const auto& vt = vterm;
-  auto& rp = TCAP(fc::t_repeat_char);
+  const auto& rp = TCAP(fc::t_repeat_char);
   auto print_char = &vt->data[y * uInt(vt->width) + x];
 
   if ( ! rp )
@@ -2606,7 +2596,7 @@ FVTerm::exit_state FVTerm::repeatCharacter (uInt& x, uInt xmax, uInt y)
   }
   else
   {
-    uInt start_pos = x;
+    const uInt start_pos = x;
 
     if ( repetitions > repeat_char_length
       && print_char->ch < 128 )
@@ -2648,7 +2638,7 @@ inline bool FVTerm::isFullWidthPaddingChar (FChar*& ch)
 void FVTerm::cursorWrap()
 {
   // Wrap the cursor
-  FTermArea*& vt = vterm;
+  const auto& vt = vterm;
 
   if ( term_pos->getX() >= vt->width )
   {
@@ -2675,10 +2665,10 @@ void FVTerm::cursorWrap()
 bool FVTerm::printWrap (FTermArea* area)
 {
   bool end_of_area{false};
-  int width  = area->width
+  const int width  = area->width;
-    , height = area->height
+  const int height = area->height;
-    , rsh    = area->right_shadow
+  const int rsh    = area->right_shadow;
-    , bsh    = area->bottom_shadow;
+  const int bsh    = area->bottom_shadow;
 
   // Line break at right margin
   if ( area->cursor_x > width + rsh )
@@ -2730,7 +2720,7 @@ void FVTerm::updateTerminalLine (uInt y)
 {
   // Updates pending changes from line y to the terminal
 
-  FTermArea*& vt = vterm;
+  const auto& vt = vterm;
   uInt& xmin = vt->changes[y].xmin;
   uInt& xmax = vt->changes[y].xmax;
 
@@ -2738,7 +2728,7 @@ void FVTerm::updateTerminalLine (uInt y)
   {
     bool draw_leading_ws = false;
     bool draw_trailing_ws = false;
-    auto& ce = TCAP(fc::t_clr_eol);
+    const auto& ce = TCAP(fc::t_clr_eol);
     auto first_char = &vt->data[y * uInt(vt->width)];
     auto last_char  = &vt->data[(y + 1) * uInt(vt->width) - 1];
     auto min_char   = &vt->data[y * uInt(vt->width) + xmin];
@@ -2767,7 +2757,7 @@ void FVTerm::updateTerminalLine (uInt y)
     {
       if ( draw_leading_ws )
       {
-        auto& cb = TCAP(fc::t_clr_bol);
+        const auto& cb = TCAP(fc::t_clr_bol);
         appendAttributes (first_char);
         appendOutputBuffer (cb);
         markAsPrinted (0, xmin, y);
@@ -2797,8 +2787,8 @@ bool FVTerm::updateTerminalCursor()
   // Updates the input cursor visibility and the position
   if ( vterm && vterm->input_cursor_visible )
   {
-    int x = vterm->input_cursor_x;
+    const int x = vterm->input_cursor_x;
-    int y = vterm->input_cursor_y;
+    const int y = vterm->input_cursor_y;
 
     if ( isInsideTerminal(FPoint(x, y)) )
     {
@@ -2818,7 +2808,7 @@ bool FVTerm::isInsideTerminal (const FPoint& pos)
 {
   // Check whether the coordinates are within the virtual terminal
 
-  FRect term_geometry (0, 0, getColumnNumber(), getLineNumber());
+  const FRect term_geometry (0, 0, getColumnNumber(), getLineNumber());
 
   if ( term_geometry.contains(pos) )
     return true;
@@ -2829,12 +2819,12 @@ bool FVTerm::isInsideTerminal (const FPoint& pos)
 //----------------------------------------------------------------------
 inline bool FVTerm::isTermSizeChanged()
 {
-  auto data = getFTerm().getFTermData();
+  const auto& data = getFTerm().getFTermData();
 
   if ( ! data )
     return false;
 
-  auto old_term_geometry = data->getTermGeometry();
+  const auto& old_term_geometry = data->getTermGeometry();
   FTerm::detectTermSize();
   auto term_geometry = data->getTermGeometry();
   term_geometry.move (-1, -1);
@@ -2881,13 +2871,13 @@ inline void FVTerm::newFontChanges (FChar*& next_char)
 //----------------------------------------------------------------------
 inline void FVTerm::charsetChanges (FChar*& next_char)
 {
-  wchar_t& ch = next_char->ch;
+  const wchar_t& ch = next_char->ch;
   next_char->encoded_char = ch;
 
   if ( getEncoding() == fc::UTF8 )
     return;
 
-  wchar_t ch_enc = FTerm::charEncode(ch);
+  const wchar_t ch_enc = FTerm::charEncode(ch);
 
   if ( ch_enc == ch )
     return;
@@ -2925,8 +2915,8 @@ inline void FVTerm::charsetChanges (FChar*& next_char)
 //----------------------------------------------------------------------
 inline void FVTerm::appendCharacter (FChar*& next_char)
 {
-  int term_width = vterm->width - 1;
+  const int term_width = vterm->width - 1;
-  int term_height = vterm->height - 1;
+  const int term_height = vterm->height - 1;
 
   if ( term_pos->getX() == term_width
     && term_pos->getY() == term_height )
@@ -2953,7 +2943,7 @@ inline void FVTerm::appendAttributes (FChar*& next_attr)
   auto term_attr = &term_attribute;
 
   // generate attribute string for the next character
-  char* attr_str = FTerm::changeAttribute (term_attr, next_attr);
+  const char* attr_str = FTerm::changeAttribute (term_attr, next_attr);
 
   if ( attr_str )
     appendOutputBuffer (attr_str);
@@ -2962,8 +2952,8 @@ inline void FVTerm::appendAttributes (FChar*& next_attr)
 //----------------------------------------------------------------------
 int FVTerm::appendLowerRight (FChar*& screen_char)
 {
-  auto& SA = TCAP(fc::t_enter_am_mode);
+  const auto& SA = TCAP(fc::t_enter_am_mode);
-  auto& RA = TCAP(fc::t_exit_am_mode);
+  const auto& RA = TCAP(fc::t_exit_am_mode);
 
   if ( ! FTermcap::automatic_right_margin )
   {
@@ -2977,14 +2967,14 @@ int FVTerm::appendLowerRight (FChar*& screen_char)
   }
   else
   {
-    auto& IC = TCAP(fc::t_parm_ich);
+    const auto& IC = TCAP(fc::t_parm_ich);
-    auto& im = TCAP(fc::t_enter_insert_mode);
+    const auto& im = TCAP(fc::t_enter_insert_mode);
-    auto& ei = TCAP(fc::t_exit_insert_mode);
+    const auto& ei = TCAP(fc::t_exit_insert_mode);
-    auto& ip = TCAP(fc::t_insert_padding);
+    const auto& ip = TCAP(fc::t_insert_padding);
-    auto& ic = TCAP(fc::t_insert_character);
+    const auto& ic = TCAP(fc::t_insert_character);
 
-    int x = int(getColumnNumber()) - 2;
+    const int x = int(getColumnNumber()) - 2;
-    int y = int(getLineNumber()) - 1;
+    const int y = int(getLineNumber()) - 1;
     setTermXY (x, y);
     appendChar (screen_char);
     term_pos->x_ref()++;

src/fwidget.cpp

@@ -243,7 +243,7 @@ std::vector<bool>& FWidget::doubleFlatLine_ref (fc::sides side)
 //----------------------------------------------------------------------
 FPoint FWidget::getPrintPos()
 {
-  const auto cur = getPrintCursor();
+  const auto& cur = getPrintCursor();
   return FPoint ( cur.getX() - woffset.getX1() - getX() + 1
                 , cur.getY() - woffset.getY1() - getY() + 1 );
 }
@@ -545,8 +545,8 @@ void FWidget::setGeometry (const FPoint& p, const FSize& s, bool adjust)
 {
   // Sets the geometry of the widget relative to its parent
 
-  int x = p.getX();
+  const int x = p.getX();
-  int y = p.getY();
+  const int y = p.getY();
   std::size_t w = s.getWidth();
   std::size_t h = s.getHeight();
   w = std::min (w, size_hints.max_width);
@@ -572,8 +572,8 @@ void FWidget::setGeometry (const FPoint& p, const FSize& s, bool adjust)
   ( h < 1 ) ? wsize.setHeight(1) : wsize.setHeight(h);
 
   adjust_wsize = wsize;
-  int term_x = getTermX();
+  const int term_x = getTermX();
-  int term_y = getTermY();
+  const int term_y = getTermY();
 
   wclient_offset.setCoordinates ( term_x - 1 + padding.left
                                 , term_y - 1 + padding.top
@@ -602,7 +602,7 @@ bool FWidget::setCursorPos (const FPoint& pos)
   if ( ! FWindow::getWindowWidget(this) )
     return false;
 
-  auto area = getPrintArea();
+  const auto& area = getPrintArea();
 
   if ( area->widget )
   {
@@ -628,7 +628,7 @@ bool FWidget::setCursorPos (const FPoint& pos)
 //----------------------------------------------------------------------
 void FWidget::setPrintPos (const FPoint& pos)
 {
-  FPoint p{ woffset.getX1() + getX() + pos.getX() - 1,
+  const FPoint p{ woffset.getX1() + getX() + pos.getX() - 1,
                   woffset.getY1() + getY() + pos.getY() - 1 };
   setPrintCursor(p);
 }
@@ -678,7 +678,7 @@ void FWidget::setDoubleFlatLine (fc::sides side, int pos, bool bit)
   assert ( pos >= 1 );
 
   uLong length{};
-  uLong index = uLong(pos - 1);
+  const uLong index = uLong(pos - 1);
 
   switch ( side )
   {
@@ -754,7 +754,7 @@ int FWidget::numOfFocusableChildren()
   {
     if ( child->isWidget() )
     {
-      auto widget = static_cast<FWidget*>(child);
+      const auto& widget = static_cast<FWidget*>(child);
 
       if ( widget->isShown()
         && widget->acceptFocus()
@@ -961,7 +961,7 @@ void FWidget::resize()
 {
   if ( isRootWidget() )
   {
-    FRect old_term_geometry (getTermGeometry());
+    const FRect old_term_geometry (getTermGeometry());
     detectTermSize();
     FRect term_geometry (getTermGeometry());
     term_geometry.move (-1, -1);
@@ -997,7 +997,7 @@ void FWidget::show()
     initScreenSettings();
 
     // draw the vdesktop
-    auto r = getRootWidget();
+    const auto& r = getRootWidget();
     setColor(r->getForegroundColor(), r->getBackgroundColor());
     clearArea (getVirtualDesktop());
     init_desktop = true;
@@ -1072,7 +1072,7 @@ bool FWidget::focusFirstChild()
     return false;
 
   auto iter = FObject::begin();
-  auto last = FObject::end();
+  const auto last = FObject::end();
 
   while ( iter != last )
   {
@@ -1104,6 +1104,7 @@ bool FWidget::focusFirstChild()
 
     ++iter;
   }
+
   return false;
 }
 
@@ -1114,7 +1115,7 @@ bool FWidget::focusLastChild()
     return false;
 
   auto iter  = FObject::end();
-  auto first = FObject::begin();
+  const auto first = FObject::begin();
 
   do
   {
@@ -1217,7 +1218,7 @@ void FWidget::delPreprocessingHandler (FVTerm* instance)
 //----------------------------------------------------------------------
 bool FWidget::isChildPrintArea() const
 {
-  auto p_obj = static_cast<FWidget*>(getParent());
+  const auto& p_obj = static_cast<FWidget*>(getParent());
 
   if ( p_obj
     && p_obj->getChildPrintArea()
@@ -1254,7 +1255,7 @@ void FWidget::setMenuBar (FMenuBar* mbar)
 //----------------------------------------------------------------------
 void FWidget::setParentOffset()
 {
-  auto p = getParentWidget();
+  const auto& p = getParentWidget();
 
   if ( p )
     woffset = p->wclient_offset;
@@ -1263,16 +1264,16 @@ void FWidget::setParentOffset()
 //----------------------------------------------------------------------
 void FWidget::setTermOffset()
 {
-  auto r = getRootWidget();
+  const auto& r = getRootWidget();
-  int w = int(r->getWidth());
+  const int w = int(r->getWidth());
-  int h = int(r->getHeight());
+  const int h = int(r->getHeight());
   woffset.setCoordinates (0, 0, w - 1, h - 1);
 }
 
 //----------------------------------------------------------------------
 void FWidget::setTermOffsetWithPadding()
 {
-  auto r = getRootWidget();
+  const auto& r = getRootWidget();
   woffset.setCoordinates ( r->getLeftPadding()
                          , r->getTopPadding()
                          , int(r->getWidth()) - 1 - r->getRightPadding()
@@ -1284,7 +1285,7 @@ void FWidget::adjustSize()
 {
   if ( ! isRootWidget() )
   {
-    auto p = getParentWidget();
+    const auto& p = getParentWidget();
 
     if ( isWindowWidget() )
     {
@@ -1356,7 +1357,7 @@ void FWidget::hideArea (const FSize& size)
     return;
 
   FColor fg{}, bg{};
-  auto parent_widget = getParentWidget();
+  const auto& parent_widget = getParentWidget();
 
   if ( parent_widget )
   {
@@ -1388,7 +1389,7 @@ bool FWidget::focusNextChild()
   if ( isDialogWidget() || ! hasParent() )
     return false;
 
-  auto parent = getParentWidget();
+  const auto& parent = getParentWidget();
 
   if ( ! parent
     || ! parent->hasChildren()
@@ -1396,7 +1397,7 @@ bool FWidget::focusNextChild()
     return false;
 
   auto iter = parent->begin();
-  auto last = parent->end();
+  const auto last = parent->end();
 
   while ( iter != last )
   {
@@ -1406,7 +1407,7 @@ bool FWidget::focusNextChild()
       continue;
     }
 
-    auto w = static_cast<FWidget*>(*iter);
+    const auto& w = static_cast<FWidget*>(*iter);
 
     if ( w != this )
     {
@@ -1451,7 +1452,7 @@ bool FWidget::focusPrevChild()
   if ( isDialogWidget() || ! hasParent() )
     return false;
 
-  auto parent = getParentWidget();
+  const auto& parent = getParentWidget();
 
   if ( ! parent
     || ! parent->hasChildren()
@@ -1459,7 +1460,7 @@ bool FWidget::focusPrevChild()
     return false;
 
   auto iter = parent->end();
-  auto first = parent->begin();
+  const auto first = parent->begin();
 
   do
   {
@@ -1468,7 +1469,7 @@ bool FWidget::focusPrevChild()
     if ( ! (*iter)->isWidget() )
       continue;
 
-    auto w = static_cast<FWidget*>(*iter);
+    const auto& w = static_cast<FWidget*>(*iter);
 
     if ( w != this )
       continue;
@@ -1495,7 +1496,7 @@ bool FWidget::focusPrevChild()
            || ! prev->isShown()
            || prev->isWindowWidget() );
 
-    bool accpt = changeFocus (prev, parent, fc::FocusPreviousWidget);
+    const bool accpt = changeFocus (prev, parent, fc::FocusPreviousWidget);
 
     if ( ! accpt )
       return false;
@@ -1803,7 +1804,7 @@ void FWidget::KeyPressEvent (FKeyEvent* kev)
 
     if ( ! kev->isAccepted() )
     {
-      FKey key = kev->key();
+      const FKey key = kev->key();
 
       if ( [&] () -> bool
            {
@@ -1845,7 +1846,7 @@ void FWidget::KeyDownEvent (FKeyEvent* kev)
 //----------------------------------------------------------------------
 void FWidget::emitWheelCallback (FWheelEvent* ev)
 {
-  int wheel = ev->getWheel();
+  const int wheel = ev->getWheel();
 
   if ( wheel == fc::WheelUp )
     emitCallback("mouse-wheel-up");
@@ -1948,8 +1949,8 @@ void FWidget::drawWindows()
     if ( window->isShown() )
     {
       auto v_win = window->getVWin();
-      int w = v_win->width  + v_win->right_shadow;
+      const int w = v_win->width  + v_win->right_shadow;
-      int h = v_win->height + v_win->bottom_shadow;
+      const int h = v_win->height + v_win->bottom_shadow;
       std::fill_n (v_win->data, w * h, default_char);
       window->redraw();
     }
@@ -2011,7 +2012,7 @@ void FWidget::setStatusbarText (bool enable)
 //----------------------------------------------------------------------
 void detectTermSize()
 {
-  auto r = rootObject;
+  const auto& r = rootObject;
   FTerm::detectTermSize();
   r->adjust_wsize.setRect (1, 1, r->getDesktopWidth(), r->getDesktopHeight());
   r->woffset.setRect (0, 0, r->getDesktopWidth(), r->getDesktopHeight());

src/fwidget_functions.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -28,7 +28,7 @@ namespace finalcut
 
 // FWidget non-member functions
 //----------------------------------------------------------------------
-bool isFocusNextKey (FKey key)
+bool isFocusNextKey (const FKey key)
 {
   if ( key == fc::Fkey_tab
     || key == fc::Fkey_right
@@ -39,7 +39,7 @@ bool isFocusNextKey (FKey key)
 }
 
 //----------------------------------------------------------------------
-bool isFocusPrevKey (FKey key)
+bool isFocusPrevKey (const FKey key)
 {
   if ( key == fc::Fkey_btab
     || key == fc::Fkey_left
@@ -58,7 +58,7 @@ FKey getHotkey (const FString& text)
   if ( text.isEmpty() )
     return 0;
 
-  std::size_t length = text.getLength();
+  const std::size_t length = text.getLength();
 
   for (std::size_t i{0}; i < length; i++)
   {
@@ -150,8 +150,8 @@ void drawTransparentShadow (FWidget* w)
 {
   // transparent shadow
 
-  std::size_t width = w->getWidth();
+  const std::size_t width = w->getWidth();
-  std::size_t height = w->getHeight();
+  const std::size_t height = w->getHeight();
   w->setTransparent();
   w->print() << FPoint(int(width) + 1, 1) << "  ";
   w->unsetTransparent();
@@ -185,8 +185,8 @@ void drawBlockShadow (FWidget* w)
   if ( ! w->hasShadowCharacter() )
     return;
 
-  std::size_t width = w->getWidth();
+  const std::size_t width = w->getWidth();
-  std::size_t height = w->getHeight();
+  const std::size_t height = w->getHeight();
   w->print() << FPoint(int(width) + 1, 1);
 
   if ( w->isWindowWidget() )
@@ -224,8 +224,8 @@ void clearShadow (FWidget* w)
   if ( w->isMonochron() )
     return;
 
-  std::size_t width = w->getWidth();
+  const std::size_t width = w->getWidth();
-  std::size_t height = w->getHeight();
+  const std::size_t height = w->getHeight();
 
   if ( w->isWindowWidget() )
   {
@@ -264,8 +264,8 @@ void drawFlatBorder (FWidget* w)
   else
     w->setColor (w->wcolors.dialog_fg, w->wcolors.dialog_bg);
 
-  std::size_t width = w->getWidth();
+  const std::size_t width = w->getWidth();
-  std::size_t height = w->getHeight();
+  const std::size_t height = w->getHeight();
 
   for (std::size_t y{0}; y < height; y++)
   {
@@ -324,8 +324,8 @@ void clearFlatBorder (FWidget* w)
   else
     w->setColor (w->wcolors.dialog_fg, w->wcolors.dialog_bg);
 
-  std::size_t width = w->getWidth();
+  const std::size_t width = w->getWidth();
-  std::size_t height = w->getHeight();
+  const std::size_t height = w->getHeight();
 
   for (std::size_t y{0}; y < height; y++)
   {
@@ -370,7 +370,7 @@ void clearFlatBorder (FWidget* w)
 }
 
 //----------------------------------------------------------------------
-inline void checkBorder (FWidget* w, FRect r)
+inline void checkBorder (FWidget* w, FRect& r)
 {
   if ( r.x1_ref() > r.x2_ref() )
     std::swap (r.x1_ref(), r.x2_ref());
@@ -403,7 +403,7 @@ void drawBorder (FWidget* w, FRect r)
 }
 
 //----------------------------------------------------------------------
-void drawListBorder (FWidget* w, const FRect& r)
+void drawListBorder (FWidget* w, FRect r)
 {
   checkBorder (w, r);
 

src/fwindow.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2015-2019 Markus Gans                                      *
+* Copyright 2015-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -56,7 +56,7 @@ FWindow::FWindow(FWidget* parent)
 //----------------------------------------------------------------------
 FWindow::~FWindow()  // destructor
 {
-  auto fapp = FApplication::getApplicationObject();
+  const auto& fapp = FApplication::getApplicationObject();
 
   if ( previous_window == this )
     previous_window = nullptr;
@@ -243,7 +243,7 @@ void FWindow::drawBorder()
 {
   if ( isNewFont() )  // Draw a newfont outer frame
   {
-    FRect r(FPoint(1, 1), getSize());
+    const FRect r(FPoint(1, 1), getSize());
     print() << r.getUpperLeftPos()
             << fc::NF_border_corner_upper_left                      // ⎡
             << FString(r.getWidth() - 2, fc::NF_border_line_upper)  // ¯
@@ -328,7 +328,7 @@ void FWindow::setPos (const FPoint& p, bool adjust)
 //----------------------------------------------------------------------
 void FWindow::setWidth (std::size_t w, bool adjust)
 {
-  std::size_t old_width = getWidth();
+  const std::size_t old_width = getWidth();
   FWidget::setWidth (w, adjust);
 
   if ( isVirtualWindow() && getWidth() != old_width )
@@ -342,7 +342,7 @@ void FWindow::setWidth (std::size_t w, bool adjust)
 //----------------------------------------------------------------------
 void FWindow::setHeight (std::size_t h, bool adjust)
 {
-  std::size_t old_height = getHeight();
+  const std::size_t old_height = getHeight();
   FWidget::setHeight (h, adjust);
 
   if ( isVirtualWindow() && getHeight() != old_height )
@@ -356,8 +356,8 @@ void FWindow::setHeight (std::size_t h, bool adjust)
 //----------------------------------------------------------------------
 void FWindow::setSize (const FSize& size, bool adjust)
 {
-  std::size_t old_width = getWidth();
+  const std::size_t old_width = getWidth();
-  std::size_t old_height = getHeight();
+  const std::size_t old_height = getHeight();
   FWidget::setSize (size, adjust);
 
   if ( isVirtualWindow()
@@ -374,10 +374,10 @@ void FWindow::setGeometry ( const FPoint& p, const FSize& size, bool adjust)
 {
   // Sets the geometry of the widget
 
-  int old_x = getX();
+  const int old_x = getX();
-  int old_y = getY();
+  const int old_y = getY();
   FPoint pos(p);
-  FSize old_size(getSize());
+  const FSize old_size(getSize());
 
   if ( pos.getY() < 1 )
     pos.setY(1);
@@ -423,7 +423,7 @@ FWindow* FWindow::getWindowWidgetAt (int x, int y)
   if ( getWindowList() && ! getWindowList()->empty() )
   {
     auto iter = getWindowList()->end();
-    auto begin = getWindowList()->begin();
+    const auto begin = getWindowList()->begin();
 
     do
     {
@@ -514,7 +514,7 @@ int FWindow::getWindowLayer (const FWidget* obj)
     window = obj;
 
   auto iter = getWindowList()->begin();
-  auto end  = getWindowList()->end();
+  const auto end  = getWindowList()->end();
 
   while ( iter != end )
   {
@@ -545,7 +545,7 @@ void FWindow::swapWindow (FWidget* obj1, FWidget* obj2)
     return;
 
   auto iter = getWindowList()->begin();
-  auto end   = getWindowList()->end();
+  const auto end = getWindowList()->end();
   auto iter1 = end;
   auto iter2 = end;
 
@@ -649,7 +649,7 @@ bool FWindow::zoomWindow()
   if ( zoomed )
   {
     zoomed = false;
-    FRect oldGeometry (getTermGeometryWithShadow());
+    const FRect oldGeometry (getTermGeometryWithShadow());
     setGeometry (normalGeometry);
     restoreVTerm (oldGeometry);
     redraw();
@@ -659,7 +659,7 @@ bool FWindow::zoomWindow()
     zoomed = true;
     // save the current geometry
     normalGeometry = getGeometry();
-    FRect oldGeometry (getTermGeometryWithShadow());
+    const FRect oldGeometry (getTermGeometryWithShadow());
     setGeometry (FPoint(1, 1), FSize(getMaxWidth(), getMaxHeight()));
     restoreVTerm (oldGeometry);
     redraw();
@@ -678,7 +678,7 @@ void FWindow::switchToPrevWindow (FWidget* widget)
   if ( widget )
     widget->updateTerminal (FVTerm::stop_refresh);
 
-  bool is_activated = activatePrevWindow();
+  const bool is_activated = activatePrevWindow();
   auto active_win = static_cast<FWindow*>(getActiveWindow());
 
   if ( ! is_activated )
@@ -687,7 +687,7 @@ void FWindow::switchToPrevWindow (FWidget* widget)
     if ( getWindowList() && getWindowList()->size() > 1 )
     {
       auto iter = getWindowList()->end();
-      auto begin = getWindowList()->begin();
+      const auto begin = getWindowList()->begin();
 
       do
       {
@@ -715,7 +715,7 @@ void FWindow::switchToPrevWindow (FWidget* widget)
     if ( ! active_win->isWindowActive() )
       setActiveWindow(active_win);
 
-    if ( focus)
+    if ( focus )
     {
       focus->setFocus();
 
@@ -733,7 +733,7 @@ void FWindow::switchToPrevWindow (FWidget* widget)
 bool FWindow::activatePrevWindow()
 {
   // activate the previous window
-  auto w = previous_window;
+  const auto& w = previous_window;
 
   if ( w )
   {
@@ -770,8 +770,8 @@ void FWindow::setShadowSize (const FSize& size)
 //----------------------------------------------------------------------
 void FWindow::adjustSize()
 {
-  int old_x = getTermX();
+  const int old_x = getTermX();
-  int old_y = getTermY();
+  const int old_y = getTermY();
   FWidget::adjustSize();
 
   if ( zoomed )

src/include/final/fcombobox.h

@@ -250,7 +250,7 @@ inline FString FComboBox::getText() const
 //----------------------------------------------------------------------
 inline FDataPtr FComboBox::getItemData()
 {
-  std::size_t index = list_window.list.currentItem();
+  const std::size_t index = list_window.list.currentItem();
   return list_window.list.getItem(index).getData();
 }
 

src/include/final/fkeyboard.h

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -101,7 +101,7 @@ class FKeyboard final
     // Accessors
     virtual const FString getClassName() const;
     FKey                  getKey();
-    const FString         getKeyName (FKey);
+    const FString         getKeyName (const FKey);
     keybuffer&            getKeyBuffer();
     timeval*              getKeyPressedTime();
 

src/include/final/flabel.h

@@ -131,7 +131,7 @@ class FLabel : public FWidget
     // Methods
     void                init();
     void                setHotkeyAccelerator();
-    std::size_t         getAlignOffset (std::size_t);
+    std::size_t         getAlignOffset (const std::size_t);
     void                draw() override;
     void                drawMultiLine();
     void                drawSingleLine();

src/include/final/flistbox.h

@@ -176,7 +176,7 @@ class FListBox : public FWidget
     void                selectItem (listBoxItems::iterator);
     void                unselectItem (std::size_t);
     void                unselectItem (listBoxItems::iterator);
-    void                showInsideBrackets (std::size_t, fc::brackets_type);
+    void                showInsideBrackets (const std::size_t, fc::brackets_type);
     void                showNoBrackets (std::size_t);
     void                showNoBrackets (listBoxItems::iterator);
     void                setSize (const FSize&, bool = true) override;
@@ -496,7 +496,7 @@ void FListBox::insert (Container container, LazyConverter convert)
   conv_type = lazy_convert;
   source_container = container;
   lazy_inserter = convert;
-  std::size_t size = container->size();
+  const std::size_t size = container->size();
 
   if ( size > 0 )
     itemlist.resize(size);

src/include/final/flistview.h

@@ -104,6 +104,7 @@ class FListViewItem : public FObject
     // Methods
     iterator            insert (FListViewItem*);
     iterator            insert (FListViewItem*, iterator);
+    void                remove (FListViewItem*);
     void                expand();
     void                collapse();
 
@@ -204,7 +205,7 @@ class FListViewIterator
 
     // Accessor
     const FString      getClassName() const;
-    int                getPosition() const;
+    int&               getPosition();
 
     // Methods
     void               parentElement();
@@ -243,7 +244,7 @@ inline const FString FListViewIterator::getClassName() const
 { return "FListViewIterator"; }
 
 //----------------------------------------------------------------------
-inline int FListViewIterator::getPosition() const
+inline int& FListViewIterator::getPosition()
 { return position; }
 
 
@@ -330,7 +331,8 @@ class FListView : public FWidget
     iterator             insert ( const std::vector<ColT>&
                                 , FDataPtr
                                 , iterator );
-
+    void                 remove (FListViewItem*);
+    void                 clear();
     iterator             beginOfList();
     iterator             endOfList();
     virtual void         sort();
@@ -380,7 +382,7 @@ class FListView : public FWidget
     void                 processKeyAction (FKeyEvent*);
     template <typename Compare>
     void                 sort (Compare);
-    std::size_t          getAlignOffset ( fc::text_alignment
+    std::size_t          getAlignOffset ( const fc::text_alignment
                                         , std::size_t
                                         , std::size_t );
     void                 draw() override;
@@ -389,6 +391,7 @@ class FListView : public FWidget
     void                 drawHeadlines();
     void                 drawList();
     void                 drawListLine (const FListViewItem*, bool, bool);
+    void                 clearList();
     void                 setLineAttributes (bool, bool);
     FString              getCheckBox (const FListViewItem* item);
     FString              getLinePrefix (const FListViewItem*, std::size_t);

src/include/final/fmessagebox.h

@@ -207,7 +207,7 @@ int FMessageBox::info ( FWidget* parent
                    , FString() << message
                    , button0, button1, button2
                    , parent );
-  int reply = mbox.exec();
+  const int reply = mbox.exec();
   return reply;
 }
 
@@ -232,7 +232,7 @@ int FMessageBox::error ( FWidget* parent
   mbox.setForegroundColor(wc.error_box_fg);
   mbox.setBackgroundColor(wc.error_box_bg);
   mbox.emphasis_color = wc.error_box_emphasis_fg;
-  int reply = mbox.exec();
+  const int reply = mbox.exec();
   return reply;
 }
 

src/include/final/fmouse.h

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2018-2019 Markus Gans                                      *
+* Copyright 2018-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -130,7 +130,7 @@ class FMouse
     bool                  isInputDataPending();
 
     // Methods
-    static FMouse*        createMouseObject (mouse_type);
+    static FMouse*        createMouseObject (const mouse_type);
     void                  clearButtonState();
     virtual void          setRawData (FKeyboard::keybuffer&) = 0;
     virtual void          processEvent (struct timeval*) = 0;
@@ -312,7 +312,7 @@ class FMouseX11 final : public FMouse
     // Methods
     void         setKeyState (int);
     void         setMoveState (const FPoint&, int);
-    void         setButtonState (int, struct timeval*);
+    void         setButtonState (const int, struct timeval*);
 
     // Data member
     char  x11_mouse[MOUSE_BUF_SIZE]{'\0'};
@@ -370,8 +370,8 @@ class FMouseSGR final : public FMouse
     // Methods
     void          setKeyState (int);
     void          setMoveState (const FPoint&, int);
-    void          setPressedButtonState (int, struct timeval*);
+    void          setPressedButtonState (const int, struct timeval*);
-    void          setReleasedButtonState (int);
+    void          setReleasedButtonState (const int);
 
     // Data members
     char  sgr_mouse[MOUSE_BUF_SIZE]{'\0'};
@@ -430,7 +430,7 @@ class FMouseUrxvt final : public FMouse
     // Methods
     void          setKeyState (int);
     void          setMoveState (const FPoint&, int);
-    void          setButtonState (int, struct timeval*);
+    void          setButtonState (const int, struct timeval*);
 
     // Data members
     char  urxvt_mouse[MOUSE_BUF_SIZE]{'\0'};

src/include/final/frect.h

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -204,14 +204,14 @@ inline int FRect::getY() const
 //----------------------------------------------------------------------
 inline std::size_t FRect::getWidth() const
 {
-  int w = X2 - X1 + 1;
+  const int w = X2 - X1 + 1;
   return ( w < 0 ) ? 0 : std::size_t(w);
 }
 
 //----------------------------------------------------------------------
 inline std::size_t FRect::getHeight() const
 {
-  int h = Y2 - Y1 + 1;
+  const int h = Y2 - Y1 + 1;
   return ( h < 0 ) ? 0 : std::size_t(h);
 }
 

src/include/final/fsize.h

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2014-2019 Markus Gans                                      *
+* Copyright 2014-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -182,16 +182,16 @@ inline bool operator > (const FSize& s1, const FSize& s2)
 inline FSize operator + (const FSize& s1, const FSize& s2)
 {
   constexpr std::size_t max = std::numeric_limits<std::size_t>::max();
-  std::size_t w = ( s1.width < max - s2.width) ? s1.width + s2.width : max;
+  const std::size_t w = ( s1.width < max - s2.width) ? s1.width + s2.width : max;
-  std::size_t h = ( s1.height < max - s2.height) ? s1.height + s2.height : max;
+  const std::size_t h = ( s1.height < max - s2.height) ? s1.height + s2.height : max;
   return FSize(w, h);
 }
 
 //----------------------------------------------------------------------
 inline FSize operator - (const FSize& s1, const FSize& s2)
 {
-  std::size_t w = ( s1.width >= s2.width ) ? s1.width - s2.width : 0;
+  const std::size_t w = ( s1.width >= s2.width ) ? s1.width - s2.width : 0;
-  std::size_t h = ( s1.height >= s2.height ) ? s1.height - s2.height : 0;
+  const std::size_t h = ( s1.height >= s2.height ) ? s1.height - s2.height : 0;
   return FSize(w, h);
 }
 

src/include/final/fstring.h

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2012-2019 Markus Gans                                      *
+* Copyright 2012-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -290,7 +290,7 @@ template <typename NumT
                                  , int>::type >
 inline FString& FString::operator << (const NumT val)
 {
-  FString numstr(FString().setNumber(val));
+  const FString numstr(FString().setNumber(val));
   _insert (length, numstr.length, numstr.string);
   return *this;
 }

src/include/final/fterm.h

@@ -423,7 +423,7 @@ inline bool FTerm::unsetUTF8()
 template<typename... Args>
 inline void FTerm::putstringf (const char format[], Args&&... args)
 {
-  int size = std::snprintf ( nullptr, 0, format
+  const int size = std::snprintf ( nullptr, 0, format
                                  , std::forward<Args>(args)... ) + 1;
 
   if ( size == -1 )
@@ -432,7 +432,7 @@ inline void FTerm::putstringf (const char format[], Args&&... args)
   if ( ! fsys )
     getFSystem();
 
-  std::size_t count = std::size_t(size);
+  const std::size_t count = std::size_t(size);
   std::vector<char> buf(count);
   std::snprintf (&buf[0], count, format, std::forward<Args>(args)...);
   fsys->tputs (&buf[0], 1, FTerm::putchar_ASCII);

src/include/final/fwidget.h

@@ -526,8 +526,8 @@ class FWidget : public FVTerm, public FObject
 // implemented in fwidget_functions.cpp
 //----------------------------------------------------------------------
 void        detectTermSize();
-bool        isFocusNextKey (FKey);
+bool        isFocusNextKey (const FKey);
-bool        isFocusPrevKey (FKey);
+bool        isFocusPrevKey (const FKey);
 FKey        getHotkey (const FString&);
 std::size_t getHotkeyPos (const FString& src, FString& dest);
 void        setHotkeyViaString (FWidget*, const FString&);
@@ -537,9 +537,9 @@ void        drawBlockShadow (FWidget*);
 void        clearShadow (FWidget*);
 void        drawFlatBorder (FWidget*);
 void        clearFlatBorder (FWidget*);
-void        checkBorder (FWidget*, FRect);
+void        checkBorder (FWidget*, FRect&);
 void        drawBorder (FWidget*, FRect);
-void        drawListBorder (FWidget*, const FRect&);
+void        drawListBorder (FWidget*, FRect);
 void        drawBox (FWidget*, const FRect&);
 void        drawNewFontBox (FWidget*, const FRect&);
 void        drawNewFontListBox (FWidget*, const FRect&);

src/sgr_optimizer.cpp

@@ -3,7 +3,7 @@
 *                                                                      *
 * This file is part of the Final Cut widget toolkit                    *
 *                                                                      *
-* Copyright 2019 Markus Gans                                           *
+* Copyright 2019-2020 Markus Gans                                      *
 *                                                                      *
 * The Final Cut is free software; you can redistribute it and/or       *
 * modify it under the terms of the GNU Lesser General Public License   *
@@ -58,7 +58,7 @@ void SGRoptimizer::findParameter()
 {
   // Find ANSI X3.64 terminal SGR (Select Graphic Rendition) strings
 
-  std::size_t len = std::strlen(seq);
+  const std::size_t len = std::strlen(seq);
   csi_parameter.clear();
 
   if ( len < 6 )