More function declared as const

src/foptimove.cpp

@@ -641,7 +641,7 @@ int FOptiMove::repeatedAppend ( const capability& o
 //----------------------------------------------------------------------
 int FOptiMove::relativeMove ( char move[]
                             , int from_x, int from_y
-                            , int to_x, int to_y )
+                            , int to_x, int to_y ) const
 {
   int vtime{0};
   int htime{0};

src/ftermxterminal.cpp

@@ -202,7 +202,7 @@ void FTermXTerminal::setDefaults()
 }
 
 //----------------------------------------------------------------------
-void FTermXTerminal::resetColorMap()
+void FTermXTerminal::resetColorMap() const
 {
   // Reset the entire color table
 

src/fvterm.cpp

@@ -1256,7 +1256,7 @@ void FVTerm::scrollAreaReverse (FTermArea* area) const
 }
 
 //----------------------------------------------------------------------
-void FVTerm::clearArea (FTermArea* area, int fillchar)
+void FVTerm::clearArea (FTermArea* area, int fillchar) const
 {
   // Clear the area with the current attributes
 
@@ -1682,7 +1682,7 @@ bool FVTerm::updateVTermCharacter ( const FTermArea* area
 }
 
 //----------------------------------------------------------------------
-void FVTerm::updateVTerm()
+void FVTerm::updateVTerm() const
 {
   // Updates the character data from all areas to VTerm
 
@@ -2991,7 +2991,7 @@ inline void FVTerm::charsetChanges (FChar*& next_char)
 }
 
 //----------------------------------------------------------------------
-inline void FVTerm::appendCharacter (FChar*& next_char)
+inline void FVTerm::appendCharacter (FChar*& next_char) const
 {
   const int term_width = vterm->width - 1;
   const int term_height = vterm->height - 1;

src/include/final/fdata.h

@@ -31,9 +31,29 @@ template<typename T>
 struct FData
 {
   explicit FData (T v)
-    : value(v)
+    : value{v}
   { }
 
+  FData (const FData& d)  // Copy constructor
+    : value{d.value}
+  { }
+
+  FData& operator = (const FData& d)  // Copy assignment operator (=)
+  {
+    value = d.value;
+    return *this;
+  }
+
+  FData (FData&& d) noexcept  // Move constructor
+    : value{std::move(d.value)}
+  { }
+
+  FData& operator = (FData&& d) noexcept  // Move assignment operator (=)
+  {
+    value = std::move(d.value);
+    return *this;
+  }
+
   T operator () () const
   {
     return value;

src/include/final/fevent.h

@@ -327,7 +327,7 @@ class FTimerEvent : public FEvent  // timer event
 // class FUserEvent
 //----------------------------------------------------------------------
 
-class FUserEvent : public FEvent  // timer event
+class FUserEvent : public FEvent  // user event
 {
   public:
     FUserEvent() = default;

src/include/final/foptimove.h

@@ -169,7 +169,7 @@ class FOptiMove final
     int           capDuration (const char[], int) const;
     int           capDurationToLength (int) const;
     int           repeatedAppend (const capability&, volatile int, char*) const;
-    int           relativeMove (char[], int, int, int, int);
+    int           relativeMove (char[], int, int, int, int) const;
     int           verticalMove (char[], int, int) const;
     void          downMove (char[], int&, int, int) const;
     void          upMove (char[], int&, int, int) const;

src/include/final/ftermxterminal.h

@@ -98,7 +98,7 @@ class FTermXTerminal final
     // Methods
     void                  init();
     void                  setDefaults();
-    void                  resetColorMap();
+    void                  resetColorMap() const;
     void                  resetForeground();
     void                  resetBackground();
     void                  resetCursorColor();

src/include/final/fvterm.h

@@ -313,7 +313,7 @@ class FVTerm
     static void           putArea (const FPoint&, const FTermArea*);
     void                  scrollAreaForward (FTermArea*) const;
     void                  scrollAreaReverse (FTermArea*) const;
-    void                  clearArea (FTermArea*, int = ' ');
+    void                  clearArea (FTermArea*, int = ' ') const;
     void                  processTerminalUpdate();
     static void           startTerminalUpdate();
     static void           finishTerminalUpdate();
@@ -364,7 +364,7 @@ class FVTerm
     static bool           updateVTermCharacter ( const FTermArea*
                                                , const FPoint&
                                                , const FPoint& );
-    void                  updateVTerm();
+    void                  updateVTerm() const;
     static void           callPreprocessingHandler (const FTermArea*);
     bool                  hasChildAreaChanges (FTermArea*) const;
     void                  clearChildAreaChanges (const FTermArea*) const;
@@ -412,7 +412,7 @@ class FVTerm
     static void           markAsPrinted (uInt, uInt, uInt);
     static void           newFontChanges (FChar*&);
     static void           charsetChanges (FChar*&);
-    void                  appendCharacter (FChar*&);
+    void                  appendCharacter (FChar*&) const;
     void                  appendChar (FChar*&) const;
     void                  appendAttributes (FChar*&) const;
     int                   appendLowerRight (FChar*&) const;