-class WXDLLEXPORT wxBitmap;
-class WXDLLEXPORT wxBitmapHandler;
-class WXDLLEXPORT wxImage;
-class WXDLLEXPORT wxMask;
-class WXDLLEXPORT wxPalette;
+// ----------------------------------------------------------------------------
+// wxMask represents the transparent area of the bitmap
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxMaskBase : public wxObject
+{
+public:
+ // create the mask from bitmap pixels of the given colour
+ bool Create(const wxBitmap& bitmap, const wxColour& colour);
+
+#if wxUSE_PALETTE
+ // create the mask from bitmap pixels with the given palette index
+ bool Create(const wxBitmap& bitmap, int paletteIndex);
+#endif // wxUSE_PALETTE
+
+ // create the mask from the given mono bitmap
+ bool Create(const wxBitmap& bitmap);
+
+protected:
+ // this function is called from Create() to free the existing mask data
+ virtual void FreeData() = 0;
+
+ // these functions must be overridden to implement the corresponding public
+ // Create() methods, they shouldn't call FreeData() as it's already called
+ // by the public wrappers
+ virtual bool InitFromColour(const wxBitmap& bitmap,
+ const wxColour& colour) = 0;
+ virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
+};
+
+#if defined(__WXMGL__) || \
+ defined(__WXDFB__) || \
+ defined(__WXMAC__) || \
+ defined(__WXGTK__) || \
+ defined(__WXCOCOA__) || \
+ defined(__WXMOTIF__) || \
+ defined(__WXX11__)
+ #define wxUSE_BITMAP_BASE 1
+#else
+ #define wxUSE_BITMAP_BASE 0
+#endif