[GTK] DRT must display window instead of just realizing, to enable synthesizing events correctly

• Component: WebKitGTK
• Status: RESOLVED FIXED

[Gustavo Noronha (kov)]

To correctly synthesize events using gtk_main_do_event we need the window to be shown, or GTK+ throws the events away.
We want this for our EventSender. See https://bugs.webkit.org/show_bug.cgi?id=29348.

[Gustavo Noronha (kov)]

Created attachment 40015 [details]
show window instead of realizing only

[Eric Seidel (no email)]

Really?  This is so sad.  I wonder how Chromium test_shell handles this.

[Tony Chang]

test_shell on all platforms shows the window.  On Linux, we run our tests in a virtual X server (Xvfb) so it doesn't really matter.

[Eric Seidel (no email)]

Interesting.  DumpRenderTree on Mac does not show a window.  I don't believe it does on Windows either.

[Gustavo Noronha (kov)]

Yeah, that's a limitation in GTK+ - it explicitely checks if the window is visible to decide whether it will propagate the event or not, so to synthesize the events with maximum fidelity, that is, not only emitting signals, but causing GTK+ to do whatever it always does when the event happens, we'll need to show the window. Most people will run the tests inside Xvfb, so it should be a non-issue, as Tony pointed out.

[Jan Alonzo]

Comment on attachment 40015 [details]
show window instead of realizing only


> +    gtk_window_resize(GTK_WINDOW(window), size.width, size.height);
>      gtk_widget_size_allocate(container, &size);

Is this part of the patch?

[Jan Alonzo]

Comment on attachment 40015 [details]
show window instead of realizing only

r=me.

[Gustavo Noronha (kov)]

Landed as r48721, thanks.