Il 04/11/2013 15:24, Jasper St. Pierre ha scritto:
Hm. This shouldn't be happening. What version of GTK+3 are you using, and can you produce a small reproducible example[0] ? [0] http://sscce.org/
Please, find the attached example. I can get what I think is the right behaviour by commenting the call to the drawing function in on_daCairo_draw() callback, but when I have any cairo_ action, the result is an infinite firing. Release I'm currently using is 3.8.4 (Debian testing current version).
On Mon, Nov 4, 2013 at 9:18 AM, onetmt <onetmt gmail com <mailto:onetmt gmail com>> wrote: Il 04/11/2013 15:06, Jasper St. Pierre ha scritto: > Connect to the "draw" signal on the widget to do your drawing, and call > gtk_widget_queue_redraw(); on the widget if you want to request a redraw. > This is what I'm currently doing (I've connected to "draw" signal of a GtkDrawingArea), but the problem is that I have the "draw" event fired continuosly. > > On Mon, Nov 4, 2013 at 9:02 AM, onetmt <onetmt gmail com <mailto:onetmt gmail com> > <mailto:onetmt gmail com <mailto:onetmt gmail com>>> wrote: > > I'm currently in the process of porting to gtk+-3 an old finite > difference calculation application; this application had a custom graph > drawing routine based on gdk_ subsystem that cannot be compiled anymore > against new gtk3 api :( . I succesfully converted every gdk_ invocation > in their cairo_ counterparts, but now I have to substitute the no longer > available "expose-event" with the new "draw" event. The problem is that > it runs continuosly in an infinite loop. > > What is the expected mechanism of this new event? How can I refresh the > graph in a clean way as in old expose-event? > > TIA > > -- > Hofstadter's Law: > "It always takes longer than you expect, even when you take into account > Hofstadter's Law." > _______________________________________________ > gtk-list mailing list > gtk-list gnome org <mailto:gtk-list gnome org> <mailto:gtk-list gnome org <mailto:gtk-list gnome org>> > https://mail.gnome.org/mailman/listinfo/gtk-list > > > > > -- > Jasper -- Hofstadter's Law: "It always takes longer than you expect, even when you take into account Hofstadter's Law." _______________________________________________ gtk-list mailing list gtk-list gnome org <mailto:gtk-list gnome org> https://mail.gnome.org/mailman/listinfo/gtk-list -- Jasper
-- Hofstadter's Law: "It always takes longer than you expect, even when you take into account Hofstadter's Law."
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cairo_test.c
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