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Re-implement rendering to pixmaps (double-buffering) and caching decorations

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This commit is contained in:
Michael Stapelberg
2011-03-20 14:07:16 +01:00
parent e835888a9e
commit b25477b15e
6 changed files with 135 additions and 95 deletions
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32
src/xcb.c
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@ -289,38 +289,6 @@ void xcb_raise_window(xcb_connection_t *conn, xcb_window_t window) {
xcb_configure_window(conn, window, XCB_CONFIG_WINDOW_STACK_MODE, values);
}
/*
*
* Prepares the given Cached_Pixmap for usage (checks whether the size of the
* object this pixmap is related to (e.g. a window) has changed and re-creates
* the pixmap if so).
*
*/
void cached_pixmap_prepare(xcb_connection_t *conn, struct Cached_Pixmap *pixmap) {
DLOG("preparing pixmap\n");
/* If the Rect did not change, the pixmap does not need to be recreated */
if (memcmp(&(pixmap->rect), pixmap->referred_rect, sizeof(Rect)) == 0)
return;
memcpy(&(pixmap->rect), pixmap->referred_rect, sizeof(Rect));
if (pixmap->id == 0 || pixmap->gc == 0) {
DLOG("Creating new pixmap...\n");
pixmap->id = xcb_generate_id(conn);
pixmap->gc = xcb_generate_id(conn);
} else {
DLOG("Re-creating this pixmap...\n");
xcb_free_gc(conn, pixmap->gc);
xcb_free_pixmap(conn, pixmap->id);
}
xcb_create_pixmap(conn, root_depth, pixmap->id,
pixmap->referred_drawable, pixmap->rect.width, pixmap->rect.height);
xcb_create_gc(conn, pixmap->gc, pixmap->id, 0, 0);
}
/*
* Query the width of the given text (16-bit characters, UCS) with given real
* length (amount of glyphs) using the given font.