Some small code improvements

ChangeLog

@@ -1,6 +1,7 @@
 2018-09-02  Markus Gans  <guru.mail@muenster.de>
 	* Fix mouse wheel behavior over horizontal scroll bars
 	  in FTextView
+	* Some small code improvements
 
 2018-09-01  Markus Gans  <guru.mail@muenster.de>
 	* Compiles now with newer gcc

examples/opti-move.cpp

@@ -91,7 +91,7 @@ void move (int xold, int yold, int xnew, int ynew)
   // prints the cursor move escape sequence
   std::string sequence;
   char* buffer;
-  char  from[10], to[10], byte[20];
+  char  from[26], to[26], byte[20];
   uInt  len;
   const std::string ctrl_character[] =
   {
@@ -104,8 +104,8 @@ void move (int xold, int yold, int xnew, int ynew)
 
   term_boundaries(xold, yold);
   term_boundaries(xnew, ynew);
-  snprintf (from, sizeof(from), "(%d;%d)", xold, yold);
+  snprintf (from, sizeof(from), "(%3d;%3d)", xold, yold);
-  snprintf (to, sizeof(to), "(%d;%d)", xnew, ynew);
+  snprintf (to, sizeof(to), "(%3d;%3d)", xnew, ynew);
   std::cout << std::right << std::setw(10) << from
             << " -> "
             << std::left << std::setw(10) << to

src/fkeyboard.cpp

@@ -372,8 +372,12 @@ int FKeyboard::UTF8decode (const char utf8[])
 {
   register int ucs = 0;
   const int max = 4;
+  int len = int(std::strlen(utf8));
 
-  for (register int i = 0; i < int(std::strlen(utf8)) && i < max; ++i)
+  if ( len > max )
+    len = max;
+
+  for (register int i = 0; i < len; ++i)
   {
     register uChar ch = uChar(utf8[i]);
 

src/flineedit.cpp

@@ -538,15 +538,11 @@ void FLineEdit::onTimer (FTimerEvent*)
         return;
       }
 
-      text_offset--;
+      if ( text_offset > 0 )
+        text_offset--;
 
-      if ( text_offset < 0 )
+      if ( cursor_pos > 0 )
-        text_offset = 0;
+        cursor_pos--;
-
-      cursor_pos--;
-
-      if ( cursor_pos < 0 )
-        cursor_pos = 0;
 
       break;
 
@@ -557,15 +553,11 @@ void FLineEdit::onTimer (FTimerEvent*)
         return;
       }
 
-      text_offset++;
+      if ( text_offset <= len - getWidth() + 1 )
+        text_offset++;
 
-      if ( text_offset > len - getWidth() + 2 )
+      if ( cursor_pos < len )
-        text_offset = len - getWidth() + 2;
+        cursor_pos++;
-
-      cursor_pos++;
-
-      if ( cursor_pos > len )
-        cursor_pos = len;
 
       break;
 
@@ -804,10 +796,8 @@ void FLineEdit::drawInputField()
 //----------------------------------------------------------------------
 inline void FLineEdit::keyLeft()
 {
-  cursor_pos--;
+  if ( cursor_pos > 0 )
-
+    cursor_pos--;
-  if ( cursor_pos < 0 )
-    cursor_pos = 0;
 
   if ( cursor_pos < text_offset )
     text_offset--;
@@ -817,10 +807,9 @@ inline void FLineEdit::keyLeft()
 inline void FLineEdit::keyRight()
 {
   int len = int(text.getLength());
-  cursor_pos++;
 
-  if ( cursor_pos >= len )
+  if ( cursor_pos < len )
-    cursor_pos = len;
+    cursor_pos++;
 
   if ( cursor_pos - text_offset >= getWidth() - 2
     && text_offset <= len - getWidth() + 1 )

src/flistview.cpp

@@ -1814,10 +1814,8 @@ inline void FListView::keyLeft (int& first_line_position_before)
   else
   {
     // Scroll left
-    xoffset--;
+    if ( xoffset > 0 )
-
+      xoffset--;
-    if ( xoffset < 0 )
-      xoffset = 0;
   }
 }
 
@@ -1838,10 +1836,8 @@ inline void FListView::keyRight (int& first_line_position_before)
   else
   {
     // Scroll right
-    xoffset++;
+    if ( xoffset < xoffset_end )
-
+      xoffset++;
-    if ( xoffset > xoffset_end )
-      xoffset = xoffset_end;
 
     if ( xoffset < 0 )
       xoffset = 0;