+pixmap_mask *pixmap_mask_new(int w, int h, char *data)
+{
+ pixmap_mask *m = g_new(pixmap_mask, 1);
+ m->w = w;
+ m->h = h;
+ m->mask = XCreateBitmapFromData(ob_display, ob_root, data, w, h);
+ return m;
+}
+
+void pixmap_mask_free(pixmap_mask *m)
+{
+ XFreePixmap(ob_display, m->mask);
+ g_free(m);
+}
+
+void mask_draw(Pixmap p, TextureMask *m, int width, int height)
+{
+ int x, y;
+ if (m->mask == None) return; // no mask given
+
+ // set the clip region
+ x = (width - m->mask->w) / 2;
+ y = (height - m->mask->h) / 2;
+ XSetClipMask(ob_display, m->color->gc, m->mask->mask);
+ XSetClipOrigin(ob_display, m->color->gc, x, y);
+
+ // fill in the clipped region
+ XFillRectangle(ob_display, p, m->color->gc, x, y,
+ x + m->mask->w, y + m->mask->h);
+
+ // unset the clip region
+ XSetClipMask(ob_display, m->color->gc, None);
+ XSetClipOrigin(ob_display, m->color->gc, 0, 0);
+}