support for GTK3

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71894 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/colour.h

@@ -10,6 +10,10 @@
 #ifndef _WX_GTK_COLOUR_H_
 #define _WX_GTK_COLOUR_H_
 
+#ifdef __WXGTK3__
+typedef struct _GdkRGBA GdkRGBA;
+#endif
+
 //-----------------------------------------------------------------------------
 // wxColour
 //-----------------------------------------------------------------------------
@@ -21,6 +25,9 @@ public:
     // ------------
     DEFINE_STD_WXCOLOUR_CONSTRUCTORS
     wxColour(const GdkColor& gdkColor);
+#ifdef __WXGTK3__
+    wxColour(const GdkRGBA& gdkRGBA);
+#endif
 
     virtual ~wxColour();
 
@@ -33,8 +40,12 @@ public:
     unsigned char Alpha() const;
 
     // Implementation part
+#ifdef __WXGTK3__
+    operator const GdkRGBA*() const;
+#else
     void CalcPixel( GdkColormap *cmap );
     int GetPixel() const;
+#endif
     const GdkColor *GetColor() const;
 
 protected:
@@ -43,7 +54,6 @@ protected:
 
     virtual bool FromString(const wxString& str);
 
-private:
     DECLARE_DYNAMIC_CLASS(wxColour)
 };