draw_overlay

Description:

public signal void draw_overlay (Context cr, Rectangle rect)

Emitted during painting, before the node contents has been rendered.

Allows consumers to draw an overlay for the widget, for instance for simple user interface elements.

Note: Manipulating the view widget in the signal handler is not supported. This signal is only available if GEGL-GTK was build with Cairo GObject support.

Parameters:

cr	the `CairoContext` to render to
rect	the area that was updated, in view coordinates