-/***** Win32 fix for gdk_cursor_new_from_pixmap() by Dirk Gerrits ****/
-
-#ifdef WIN32
-gboolean colors_too_similar(const GdkColor *colora, const GdkColor *colorb)
-{
- return (abs(colora->red - colorb->red) < 256 &&
- abs(colora->green - colorb->green) < 256 &&
- abs(colora->blue - colorb->blue) < 256);
-}
-
-/* gdk_cursor_new_from_pixmap is broken on Windows.
- this is a workaround using gdk_cursor_new_from_pixbuf. */
-GdkCursor* fixed_gdk_cursor_new_from_pixmap(GdkPixmap *source, GdkPixmap *mask,
- const GdkColor *fg, const GdkColor *bg,
- gint x, gint y)
-{
- GdkPixmap *rgb_pixmap;
- GdkGC *gc;
- GdkPixbuf *rgb_pixbuf, *rgba_pixbuf;
- GdkCursor *cursor;
- int width, height;
-
- /* HACK! It seems impossible to work with RGBA pixmaps directly in
- GDK-Win32. Instead we pick some third color, different from fg
- and bg, and use that as the 'transparent color'. We do this using
- colors_too_similar (see above) because two colors could be
- unequal in GdkColor's 16-bit/sample, but equal in GdkPixbuf's
- 8-bit/sample. */
- GdkColor candidates[3] = {{0,65535,0,0}, {0,0,65535,0}, {0,0,0,65535}};
- GdkColor *trans = &candidates[0];
- if (colors_too_similar(trans, fg) || colors_too_similar(trans, bg)) {
- trans = &candidates[1];
- if (colors_too_similar(trans, fg) || colors_too_similar(trans, bg)) {
- trans = &candidates[2];
- }
- } /* trans is now guaranteed to be unique from fg and bg */
-
- /* create an empty pixmap to hold the cursor image */
- gdk_drawable_get_size(source, &width, &height);
- rgb_pixmap = gdk_pixmap_new(NULL, width, height, 24);
-
- /* blit the bitmaps defining the cursor onto a transparent background */
- gc = gdk_gc_new(rgb_pixmap);
- gdk_gc_set_fill(gc, GDK_SOLID);
- gdk_gc_set_rgb_fg_color(gc, trans);
- gdk_draw_rectangle(rgb_pixmap, gc, TRUE, 0, 0, width, height);
- gdk_gc_set_fill(gc, GDK_OPAQUE_STIPPLED);
- gdk_gc_set_stipple(gc, source);
- gdk_gc_set_clip_mask(gc, mask);
- gdk_gc_set_rgb_fg_color(gc, fg);
- gdk_gc_set_rgb_bg_color(gc, bg);
- gdk_draw_rectangle(rgb_pixmap, gc, TRUE, 0, 0, width, height);
- gdk_gc_unref(gc);
-
- /* create a cursor out of the created pixmap */
- rgb_pixbuf = gdk_pixbuf_get_from_drawable(
- NULL, rgb_pixmap, gdk_colormap_get_system(), 0, 0, 0, 0, width, height);
- gdk_pixmap_unref(rgb_pixmap);
- rgba_pixbuf = gdk_pixbuf_add_alpha(
- rgb_pixbuf, TRUE, trans->red, trans->green, trans->blue);
- gdk_pixbuf_unref(rgb_pixbuf);
- cursor = gdk_cursor_new_from_pixbuf(gdk_display_get_default(), rgba_pixbuf, x, y);
- gdk_pixbuf_unref(rgba_pixbuf);
-
- return cursor;
-}
-#define gdk_cursor_new_from_pixmap fixed_gdk_cursor_new_from_pixmap
-#endif
-
-