Re: Heads-up: Potentially breaking changes to the GDK drawing model pushed

2014-06-21 3:00 GMT+02:00 Jasper St. Pierre <jstpierre mecheye net>:
To better support Wayland with fewer copies and less drawing artifacts, I've
pushed some potentially breaking changes to GDK, namely around
gdk_cairo_create and gdk_window_begin_paint_region.

With these changes, it is now illegal to call gdk_cairo_create outside of a
begin_paint / end_paint. This was always sketchy, and would never work on
Wayland anyway. If your code does this, we will print a warning and return a
dummy surface which won't ever be composited back into the main surface.

This will also break the GTK 3 version of Inkscape, which paints its
canvas in an idle handler, and the draw signal only marks areas for
redraw. However, it may be fixable by using the begin_paint APIs.

Regards, Krzysztof

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