+ if (m_bitmap)
+ gdk_bitmap_unref( m_bitmap );
+}
+
+bool wxMask::Create( const wxBitmap& bitmap,
+ const wxColour& colour )
+{
+ if (m_bitmap)
+ {
+ gdk_bitmap_unref( m_bitmap );
+ m_bitmap = (GdkBitmap*) NULL;
+ }
+
+ wxImage image( bitmap );
+ if (!image.Ok()) return FALSE;
+
+ GdkVisual *visual = gdk_visual_get_system();
+
+ GdkImage *mask_image = gdk_image_new( GDK_IMAGE_FASTEST, visual, image.GetWidth(), image.GetHeight() );
+ if (!mask_image) return FALSE;
+
+ GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
+ m_bitmap = gdk_pixmap_new( parent, image.GetWidth(), image.GetHeight(), 1 );
+
+
+ unsigned char *data = image.GetData();
+ int index = 0;
+
+ unsigned char red = colour.Red();
+ unsigned char green = colour.Green();
+ unsigned char blue = colour.Blue();
+
+ int bpp = visual->depth;
+ if ((bpp == 16) && (visual->red_mask != 0xf800)) bpp = 15;
+ if (bpp == 15)
+ {
+ red = red & 0xf8;
+ blue = blue & 0xf8;
+ green = green & 0xf8;
+ }
+ if (bpp == 16)
+ {
+ red = red & 0xf8;
+ blue = blue & 0xfc;
+ green = green & 0xf8;
+ }
+
+ for (int j = 0; j < image.GetHeight(); j++)
+ for (int i = 0; i < image.GetWidth(); i++)
+ {
+ if ((data[index] == red) &&
+ (data[index+1] == green) &&
+ (data[index+2] == blue))
+ {
+ gdk_image_put_pixel( mask_image, i, j, 1 );
+ }
+ else
+ {
+ gdk_image_put_pixel( mask_image, i, j, 1 );
+ }
+ index += 3;
+ }
+
+ GdkGC *mask_gc = gdk_gc_new( m_bitmap );
+
+ gdk_draw_image( m_bitmap, mask_gc, mask_image, 0, 0, 0, 0, image.GetWidth(), image.GetHeight() );
+
+ gdk_gc_unref( mask_gc );
+ gdk_image_destroy( mask_image );
+
+ return FALSE;
+}
+
+bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap),
+ int WXUNUSED(paletteIndex) )
+{
+ if (m_bitmap)
+ {
+ gdk_bitmap_unref( m_bitmap );
+ m_bitmap = (GdkBitmap*) NULL;
+ }
+
+ wxFAIL_MSG( wxT("not implemented") );
+
+ return FALSE;
+}
+
+bool wxMask::Create( const wxBitmap& bitmap )
+{
+ if (m_bitmap)
+ {
+ gdk_bitmap_unref( m_bitmap );
+ m_bitmap = (GdkBitmap*) NULL;
+ }
+
+ if (!bitmap.Ok()) return FALSE;
+
+ wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
+
+ m_bitmap = gdk_pixmap_new( (GdkWindow*) &gdk_root_parent, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
+
+ if (!m_bitmap) return FALSE;
+
+ GdkGC *gc = gdk_gc_new( m_bitmap );
+
+ gdk_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
+
+ gdk_gc_unref( gc );
+
+ return TRUE;