GTK Redraw Issues (was: Optimization team update (11/23 ~ 11/29))

[John Lee]

reply myself:

this is fixed along with #1946.


On Thu, Dec 04, 2008 at 04:31:12PM +0800, John Lee wrote:
> On Mon, Dec 01, 2008 at 09:10:25AM +1100, Carsten Haitzler wrote:
> > On Sun, 30 Nov 2008 19:26:46 +0000 Thomas White <taw27 at cam.ac.uk> babbled:
> > 
> > > John Lee <john_lee at openmoko.com> wrote:
> > > 
> > > > Julian is working on the GTK redraw issue, please help him out.
> > > 
> > > Be sure to see my previous analysis sent upstream:
> > > http://bugzilla.gnome.org/show_bug.cgi?id=561591
> > > 
> > > The problem arises because gtk_window_move_resize() temporarily freezes
> > > redraws on the assmption that gtk_window_configure_event() will be
> > > called shortly afterwards, but this never happens.  It could be that
> > > the "expected" configure_event is actually happening _before_ the
> > > move_resize, but I don't know what the expected order is.  In fact, I
> > > think it might not even required to be in any particular order.
> > > 
> > > I think this arises from an interaction of the specific way
> > > Enlightenment manages things combined with the assumption mentioned
> > > above. This would also explain why running GTK programs on Neo via X
> > > forwarding works for me (with xfwm4 on my laptop).  It also explains
> > > what someone described to me on IRC: that with Debian the same problems
> > > appeared only after changing WM to Enlightenment.  They were going to
> > > add a comment to the ticket, but don't seem to have done so yet.
> > 
> > e definitely does things differently to other wm's - it has a state machine
> > that it leaves to settle and then evaluates it on idle - and THEN sends fake
> > events and configures windows etc. as such under ICCCM this is something the wm
> > is free to do - not every configure request from an app will necessarily be
> > honored.
> > 
> 
> (reply to devel list)
> 
> #1946 will happen to qt as well.  if you start dialer first, switch
> back to illume home, click dialer again, you will find the dialer
> window incomplete (look at the number display), and the number won't
> show up if you click the numpad.
> 
> 
> - John
> 
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