Update VTerm information only in case of changes

examples/calculator.cpp

@@ -838,7 +838,7 @@ void Calc::tangent (lDouble& x)
 void Calc::draw()
 {
   setBold();
-  setColor (fc::Blue, fc::Cyan);
+  setColor (fc::LightBlue, fc::Cyan);
   clearArea (vdesktop, fc::MediumShade);
   unsetBold();
   finalcut::FDialog::draw();

src/ffiledialog.cpp

@@ -35,9 +35,6 @@
 namespace finalcut
 {
 
-// static class attributes
-FSystem*  FFileDialog::fsystem = nullptr;
-
 // non-member functions
 //----------------------------------------------------------------------
 bool sortByName ( const FFileDialog::dir_entry& lhs
@@ -92,6 +89,8 @@ const FString fileChooser ( FWidget* parent
   return ret;
 }
 
+// static class attributes
+FSystem*  FFileDialog::fsystem = nullptr;
 
 //----------------------------------------------------------------------
 // class FFileDialog

src/fvterm.cpp

@@ -262,18 +262,31 @@ void FVTerm::updateTerminal()
     }
   }
 
-  // Check terminal size has changed
   auto data = getFTerm().getFTermData();
 
-  if ( data->hasTermResized() )
+  // Checks if the resizing of the terminal is not finished
+  if ( data && data->hasTermResized() )
     return;
 
+  // Monitor whether the terminal size has changed
+  if ( isTermSizeChanged() )
+  {
+    raise (SIGWINCH);  // Send SIGWINCH
+    return;
+  }
+
   // Update data on VTerm
   updateVTerm();
 
+  // Checks if VTerm has changes
+  if ( ! vterm->has_changes )
+    return;
+
   for (uInt y = 0; y < uInt(vterm->height); y++)
     updateTerminalLine (y);
 
+  vterm->has_changes = false;
+
   // sets the new input cursor position
   updateTerminalCursor();
 }
@@ -852,6 +865,8 @@ void FVTerm::restoreVTerm (const FRect& box)
     if ( int(vterm->changes[ypos].xmax) < x + w - 1 )
       vterm->changes[ypos].xmax = uInt(x + w - 1);
   }
+
+  vterm->has_changes = true;
 }
 
 //----------------------------------------------------------------------
@@ -1251,6 +1266,7 @@ void FVTerm::updateVTerm (term_area* area)
     area->changes[y].xmax = 0;
   }
 
+  vterm->has_changes = true;
   updateVTermCursor(area);
 }
 
@@ -1286,6 +1302,7 @@ bool FVTerm::updateVTermCursor (term_area* area)
       vterm->input_cursor_x = x;
       vterm->input_cursor_y = y;
       vterm->input_cursor_visible = true;
+      vterm->has_changes = true;
       return true;
     }
   }
@@ -1472,6 +1489,8 @@ void FVTerm::putArea (const FPoint& pos, term_area* area)
     if ( ax + length - 1 > int(vterm->changes[ay + y].xmax) )
       vterm->changes[ay + y].xmax = uInt(ax + length - 1);
   }
+
+  vterm->has_changes = true;
 }
 
 //----------------------------------------------------------------------
@@ -2609,6 +2628,25 @@ bool FVTerm::isInsideTerminal (const FPoint& pos)
     return false;
 }
 
+//----------------------------------------------------------------------
+inline bool FVTerm::isTermSizeChanged()
+{
+  auto data = getFTerm().getFTermData();
+
+  if ( ! data )
+    return false;
+
+  auto old_term_geometry = data->getTermGeometry();
+  getFTerm().detectTermSize();
+  auto term_geometry = data->getTermGeometry();
+  term_geometry.move (-1, -1);
+
+  if ( old_term_geometry.getSize() != term_geometry.getSize() )
+    return true;
+
+  return false;
+}
+
 //----------------------------------------------------------------------
 inline void FVTerm::markAsPrinted (uInt pos, uInt line)
 {

src/include/final/fsystem.h

@@ -70,8 +70,8 @@ class FSystem
     virtual int   tputs (const char*, int, int (*)(int)) = 0;
     virtual uid_t getuid() = 0;
     virtual uid_t geteuid() = 0;
-    virtual int   getpwuid_r ( uid_t, struct passwd*, char*, size_t ,
-                               struct passwd**) = 0;
+    virtual int   getpwuid_r ( uid_t, struct passwd*, char*
+                             , size_t, struct passwd**) = 0;
     virtual char* realpath (const char*, char*) = 0;
 };
 #pragma pack(pop)

src/include/final/fvterm.h

@@ -454,6 +454,7 @@ class FVTerm
     void                  updateTerminalLine (uInt);
     bool                  updateTerminalCursor();
     bool                  isInsideTerminal (const FPoint&);
+    bool                  isTermSizeChanged();
     static void           markAsPrinted (uInt, uInt);
     static void           markAsPrinted (uInt, uInt, uInt);
     static void           newFontChanges (charData*&);

src/include/final/fwidget.h

@@ -333,7 +333,7 @@ class FWidget : public FVTerm, public FObject
     virtual bool        focusLastChild();
     FPoint              termToWidgetPos (const FPoint&);
     void                detectTermSize();
-    void                print (const FPoint& p) override;
+    void                print (const FPoint&) override;
     virtual void        move (const FPoint&);
     void                drawShadow();
     void                clearShadow();

test/ftermfreebsd-test.cpp

@@ -67,6 +67,8 @@ class FSystemTest : public finalcut::FSystem
     int              tputs (const char*, int, int (*)(int)) override;
     uid_t            getuid() override;
     uid_t            geteuid() override;
+    int              getpwuid_r (uid_t, struct passwd*, char*
+                                , size_t, struct passwd** ) override;
     char*            realpath (const char*, char*) override;
     std::string&     getCharacters();
     int&             getCursorType();
@@ -543,16 +545,16 @@ uid_t FSystemTest::geteuid()
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*, size_t
-                            , struct passwd** )
+int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*
+                            , size_t, struct passwd** )
 {
   return 0;
 }
 
 //----------------------------------------------------------------------
-char* FSystemTest::realpath (const char*, char*);
+char* FSystemTest::realpath (const char*, char*)
 {
-  return "";
+  return const_cast<char*>("");
 }
 
 //----------------------------------------------------------------------

test/ftermlinux-test.cpp

@@ -117,6 +117,8 @@ class FSystemTest : public finalcut::FSystem
     int              tputs (const char*, int, int (*)(int)) override;
     uid_t            getuid() override;
     uid_t            geteuid() override;
+    int              getpwuid_r (uid_t, struct passwd*, char*
+                                , size_t, struct passwd** ) override;
     char*            realpath (const char*, char*) override;
     rgb&             getRGB (std::size_t);
     console_font_op& getConsoleFont();
@@ -1357,16 +1359,16 @@ uid_t FSystemTest::geteuid()
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*, size_t
-                            , struct passwd** )
+int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*
+                            , size_t, struct passwd** )
 {
   return 0;
 }
 
 //----------------------------------------------------------------------
-char* FSystemTest::realpath (const char*, char*);
+char* FSystemTest::realpath (const char*, char*)
 {
-  return "";
+  return const_cast<char*>("");
 }
 
 //----------------------------------------------------------------------

test/ftermopenbsd-test.cpp

@@ -85,6 +85,8 @@ class FSystemTest : public finalcut::FSystem
     int              tputs (const char*, int, int (*)(int)) override;
     uid_t            getuid() override;
     uid_t            geteuid() override;
+    int              getpwuid_r (uid_t, struct passwd*, char*
+                                , size_t, struct passwd** ) override;
     char*            realpath (const char*, char*) override;
     wskbd_bell_data& getBell();
 
@@ -283,16 +285,16 @@ uid_t FSystemTest::geteuid()
 }
 
 //----------------------------------------------------------------------
-int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*, size_t
-                            , struct passwd** )
+int FSystemTest::getpwuid_r ( uid_t, struct passwd*, char*
+                            , size_t, struct passwd** )
 {
   return 0;
 }
 
 //----------------------------------------------------------------------
-char* FSystemTest::realpath (const char*, char*);
+char* FSystemTest::realpath (const char*, char*)
 {
-  return "";
+  return const_cast<char*>("");
 }
 
 //----------------------------------------------------------------------