Re: refresh bug in the canvas

[Alexander Larsson <alexl redhat com>]

On Mon, 2003-05-19 at 15:01, Bruno Coudoin wrote:
> I am the author of gcompris and I suffer badly from a refresh bug in the
> canvas.
> http://bugzilla.gnome.org/show_bug.cgi?id=91583
> I checked the CVS today and it's still there.
> 
> The easiest way to show evidence of the bug is the fifteen game demo in
> libgnomecanvas/demos/canvas_demo the pieces are not refreshed after the
> move (you move the window out of the desktop area and bring it back and
> you see the moved items)
> 
> We added a bunch of gnome_canvas_update in gcompris as a workaround and
> it's better now.
> 
> I don't know if gcompris is the only app to suffer this but my users are
> disapointed :(
> 
> Do you know if somebody familiar with the libgnomecanvas code is aware
> or working on this ? If not, where should I look ?

If you don't use the anti-aliased mode of the canvas you might want to
try out the foocanvas module. It has a simplified non-aa canvas that
performs better, redraws bettter and integrates better with gtk2.
Applications like nautilus and gnumeric use it.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
 Alexander Larsson                                            Red Hat, Inc 
                   alexl redhat com    alla lysator liu se 
He's a time-tossed flyboy assassin on the hunt for the last specimen of a 
great and near-mythical creature. She's a provocative thirtysomething mechanic 
with a birthmark shaped like Liberty's torch. They fight crime!