BR, Vitaly Kirsanov skype: vkirsan
---------- Forwarded message ---------- From: Виталий Кирсанов <krokozia...@gmail.com> Date: 2013/7/29 Subject: Re: How to forbid undesired redrawing of the parent? To: Paul Davis <p...@linuxaudiosystems.com> But, my child widgets have their own GDK windows. Do they have anything to do with the parent GDK window when it's time to redraw a child? BR, Vitaly Kirsanov skype: vkirsan 2013/7/29 Paul Davis <p...@linuxaudiosystems.com> > redraws (expose events) always contain an "area" to be redrawn. the parent > widget should ideally only redraw the specifiied area, especially if a full > redraw is expensive. your parent needs to determine which children and > which (if any) background needs to be redrawn. > > > On Mon, Jul 29, 2013 at 4:52 AM, Виталий Кирсанов > <krokozia...@gmail.com>wrote: > >> Hello list. >> >> I have two custom widgets: widget A is a container, widget B is a simple >> widget. Both of them are window widgets. Widget A can contain a lot of >> instances of widget B. >> >> The problem is when I call gtk_widget_queue_draw() for an instance of >> widget B it also causes the parent widget A to get redrawn as well. >> Considering that the drawing widget A depends on all of it children (i.e. >> their positions and sizes) it can lead to quite an overhead which is not >> needed in this case (that is if the instance of B being redrawn doesn't >> change its geometry). >> >> So, is there a way to prevent the parent window widget A from redrawing >> in case of one of its window children B gets redrawn? >> >> BR, Vitaly Kirsanov >> skype: vkirsan >> >> >> _______________________________________________ >> gtk-list mailing list >> gtk-list@gnome.org >> https://mail.gnome.org/mailman/listinfo/gtk-list >> >> >
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