static void draw_background (MateBGCrossfade *fade) { if (fade->priv->widget != NULL) { gtk_widget_queue_draw (fade->priv->widget); } else if (gdk_window_get_window_type (fade->priv->window) != GDK_WINDOW_ROOT) { cairo_t *cr; cairo_region_t *region; GdkDrawingContext *draw_context; region = gdk_window_get_visible_region (fade->priv->window); draw_context = gdk_window_begin_draw_frame (fade->priv->window, region); cr = gdk_drawing_context_get_cairo_context (draw_context); cairo_set_operator (cr, CAIRO_OPERATOR_OVER); cairo_set_source_surface (cr, fade->priv->fading_surface, 0, 0); cairo_paint (cr); gdk_window_end_draw_frame (fade->priv->window, draw_context); cairo_region_destroy (region); } else { Display *xdisplay = GDK_WINDOW_XDISPLAY (fade->priv->window); GdkDisplay *display; display = gdk_display_get_default (); gdk_x11_display_error_trap_push (display); XGrabServer (xdisplay); XClearWindow (xdisplay, GDK_WINDOW_XID (fade->priv->window)); send_root_property_change_notification (fade); XFlush (xdisplay); XUngrabServer (xdisplay); gdk_x11_display_error_trap_pop_ignored (display); } }
static void draw_background (GnomeBGCrossfade *fade) { if (gdk_window_get_window_type (fade->priv->window) == GDK_WINDOW_ROOT) { XClearArea (GDK_WINDOW_XDISPLAY (fade->priv->window), GDK_WINDOW_XID (fade->priv->window), 0, 0, gdk_window_get_width (fade->priv->window), gdk_window_get_height (fade->priv->window), False); send_root_property_change_notification (fade); gdk_flush (); } else { gdk_window_invalidate_rect (fade->priv->window, NULL, FALSE); gdk_window_process_updates (fade->priv->window, FALSE); } }