-/* ========================================================================= */
-/* font functions */
-/* ========================================================================= */
-
-#if defined(TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND)
-static GC font_clip_gc = None;
-
-static void InitFontClipmasks()
-{
- XGCValues clip_gc_values;
- unsigned long clip_gc_valuemask;
- GC copy_clipmask_gc;
- int i, j;
-
- /* This stuff is needed because X11 (XSetClipOrigin(), to be precise) is
- often very slow when preparing a masked XCopyArea() for big Pixmaps.
- To prevent this, create small (tile-sized) mask Pixmaps which will then
- be set much faster with XSetClipOrigin() and speed things up a lot. */
-
- clip_gc_values.graphics_exposures = False;
- clip_gc_valuemask = GCGraphicsExposures;
- font_clip_gc = XCreateGC(display, window->drawable,
- clip_gc_valuemask, &clip_gc_values);
-
- /* create graphic context structures needed for clipping */
- clip_gc_values.graphics_exposures = False;
- clip_gc_valuemask = GCGraphicsExposures;
- copy_clipmask_gc = XCreateGC(display,
- gfx.font_bitmap_info[0].bitmap->clip_mask,
- clip_gc_valuemask, &clip_gc_values);
-
- /* create only those clipping Pixmaps we really need */
- for (i = 0; i < gfx.num_fonts; i++)
- {
- if (gfx.font_bitmap_info[i].bitmap == NULL)
- continue;
-
- gfx.font_bitmap_info[i].clip_mask =
- checked_calloc(gfx.font_bitmap_info[i].num_chars * sizeof(Pixmap));
-
- for (j = 0; j < gfx.font_bitmap_info[i].num_chars; j++)
- {
- Bitmap *src_bitmap = gfx.font_bitmap_info[i].bitmap;
- Pixmap src_pixmap = src_bitmap->clip_mask;
- int xpos = j % gfx.font_bitmap_info[i].num_chars_per_line;
- int ypos = j / gfx.font_bitmap_info[i].num_chars_per_line;
- int width = gfx.font_bitmap_info[i].width;
- int height = gfx.font_bitmap_info[i].height;
- int src_x = gfx.font_bitmap_info[i].src_x + xpos * width;
- int src_y = gfx.font_bitmap_info[i].src_y + ypos * height;
-
- gfx.font_bitmap_info[i].clip_mask[j] =
- XCreatePixmap(display, window->drawable, width, height, 1);
-
- XCopyArea(display, src_pixmap, gfx.font_bitmap_info[i].clip_mask[j],
- copy_clipmask_gc, src_x, src_y, width, height, 0, 0);
- }
- }
-
- XFreeGC(display, copy_clipmask_gc);
-}
-
-static void FreeFontClipmasks()
-{
- int i, j;
-
- if (gfx.num_fonts == 0 || gfx.font_bitmap_info[0].bitmap == NULL)
- return;
-
- for (i = 0; i < gfx.num_fonts; i++)
- {
- if (gfx.font_bitmap_info[i].clip_mask)
- {
- for (j = 0; j < gfx.font_bitmap_info[i].num_chars; j++)
- XFreePixmap(display, gfx.font_bitmap_info[i].clip_mask[j]);
- free(gfx.font_bitmap_info[i].clip_mask);
- }
-
- gfx.font_bitmap_info[i].clip_mask = NULL;
- gfx.font_bitmap_info[i].num_chars = 0;
- }
-
- if (font_clip_gc)
- XFreeGC(display, font_clip_gc);
- font_clip_gc = None;
-}
-#endif /* TARGET_X11_NATIVE_PERFORMANCE_WORKAROUND */