C++ (Cpp) send_root_property_change_notification Beispiele

Beispiel #1

Datei: mate-bg-crossfade.c Projekt: mate-desktop/mate-desktop

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);
	}
}

Beispiel #2

Datei: gnome-bg-crossfade.c Projekt: 1dot75cm/gnome-desktop

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);
	}
}