Passing COLOR4D parameter using constant reference.

common/gal/cairo/cairo_gal.cpp

@@ -413,7 +413,7 @@ void CAIRO_GAL::DrawCurve( const VECTOR2D& aStartPoint, const VECTOR2D& aControl
 }
 
 
-void CAIRO_GAL::SetBackgroundColor( COLOR4D aColor )
+void CAIRO_GAL::SetBackgroundColor( const COLOR4D& aColor )
 {
     backgroundColor = aColor;
 }
@@ -449,7 +449,7 @@ void CAIRO_GAL::SetIsStroke( bool aIsStrokeEnabled )
 }
 
 
-void CAIRO_GAL::SetStrokeColor( COLOR4D aColor )
+void CAIRO_GAL::SetStrokeColor( const COLOR4D& aColor )
 {
     storePath();
 
@@ -468,7 +468,7 @@ void CAIRO_GAL::SetStrokeColor( COLOR4D aColor )
 }
 
 
-void CAIRO_GAL::SetFillColor( COLOR4D aColor )
+void CAIRO_GAL::SetFillColor( const COLOR4D& aColor )
 {
     storePath();
     fillColor = aColor;

common/gal/opengl/opengl_gal.cpp

@@ -1440,7 +1440,7 @@ void OPENGL_GAL::DrawCurve( const VECTOR2D& aStartPoint, const VECTOR2D& aContro
 }
 
 
-void OPENGL_GAL::SetStrokeColor( COLOR4D aColor )
+void OPENGL_GAL::SetStrokeColor( const COLOR4D& aColor )
 {
     isSetAttributes = true;
     strokeColor     = aColor;
@@ -1450,14 +1450,14 @@ void OPENGL_GAL::SetStrokeColor( COLOR4D aColor )
 }
 
 
-void OPENGL_GAL::SetFillColor( COLOR4D aColor )
+void OPENGL_GAL::SetFillColor( const COLOR4D& aColor )
 {
     isSetAttributes = true;
     fillColor = aColor;
 }
 
 
-void OPENGL_GAL::SetBackgroundColor( COLOR4D aColor )
+void OPENGL_GAL::SetBackgroundColor( const COLOR4D& aColor )
 {
     isSetAttributes = true;
     backgroundColor = aColor;

include/gal/cairo/cairo_gal.h

@@ -148,16 +148,16 @@ public:
     virtual void SetIsStroke( bool aIsStrokeEnabled );
 
     /// @copydoc GAL::SetFillColor()
-    virtual void SetFillColor( COLOR4D aColor );
+    virtual void SetFillColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::SetStrokeColor()
-    virtual void SetStrokeColor( COLOR4D aColor );
+    virtual void SetStrokeColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::GetStrokeColor()
     COLOR4D      GetStrokeColor();
 
     /// @copydoc GAL::SetBackgroundColor()
-    virtual void SetBackgroundColor( COLOR4D aColor );
+    virtual void SetBackgroundColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::SetLineCap()
     virtual void SetLineCap( LineCap aLineCap );

include/gal/graphics_abstraction_layer.h

@@ -219,7 +219,7 @@ public:
      *
      * @param aColor is the color for filling.
      */
-    inline virtual void SetFillColor( COLOR4D aColor )
+    inline virtual void SetFillColor( const COLOR4D& aColor )
     {
         fillColor = aColor;
     }
@@ -229,7 +229,7 @@ public:
      *
      * @param aColor is the color for stroking the outline.
      */
-    inline virtual void SetStrokeColor( COLOR4D aColor )
+    inline virtual void SetStrokeColor( const COLOR4D& aColor )
     {
         strokeColor = aColor;
     }
@@ -249,7 +249,7 @@ public:
      *
      * @param aColor is the color for background filling.
      */
-    virtual void SetBackgroundColor( COLOR4D aColor ) = 0;
+    virtual void SetBackgroundColor( const COLOR4D& aColor ) = 0;
 
     /**
      * @brief Set the style of the line caps.
@@ -569,7 +569,7 @@ public:
      *
      * @param aGridColor is the grid color, it should have a low alpha value for the best effect.
      */
-    inline void SetGridColor( COLOR4D aGridColor )
+    inline void SetGridColor( const COLOR4D& aGridColor )
     {
         gridColor = aGridColor;
     }
@@ -637,7 +637,7 @@ public:
      *
      * @param aCursorColor is the color of the cursor.
      */
-    inline void SetCursorColor( COLOR4D aCursorColor )
+    inline void SetCursorColor( const COLOR4D& aCursorColor )
     {
         cursorColor = aCursorColor;
     }

include/gal/opengl/opengl_gal.h

@@ -164,16 +164,16 @@ public:
     }
 
     /// @copydoc GAL::SetFillColor()
-    virtual void SetFillColor( COLOR4D aColor );
+    virtual void SetFillColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::SetStrokeColor()
-    virtual void SetStrokeColor( COLOR4D aColor );
+    virtual void SetStrokeColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::GetStrokeColor()
     COLOR4D      GetStrokeColor();
 
     /// @copydoc GAL::SetBackgroundColor()
-    virtual void SetBackgroundColor( COLOR4D aColor );
+    virtual void SetBackgroundColor( const COLOR4D& aColor );
 
     /// @copydoc GAL::SetLineCap()
     virtual void SetLineCap( LineCap aLineCap )