forked from AuroraMiddleware/gtk
reftests: Ensure we got a draw event before quitting the main loop
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3f4f900242
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66f0544238
@ -201,6 +201,18 @@ quit_when_idle (gpointer loop)
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return FALSE;
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}
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static void
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check_for_draw (GdkEvent *event, gpointer loop)
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{
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if (event->type == GDK_EXPOSE)
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{
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g_idle_add (quit_when_idle, loop);
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gdk_event_handler_set ((GdkEventFunc) gtk_main_do_event, NULL, NULL);
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}
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gtk_main_do_event (event);
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}
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static cairo_surface_t *
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snapshot_widget (GtkWidget *widget, SnapshotMode mode)
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{
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@ -217,7 +229,12 @@ snapshot_widget (GtkWidget *widget, SnapshotMode mode)
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gtk_widget_get_allocated_height (widget));
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loop = g_main_loop_new (NULL, FALSE);
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g_idle_add (quit_when_idle, loop);
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/* We wait until the widget is drawn for the first time.
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* We can not wait for a GtkWidget::draw event, because that might not
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* happen if the window is fully obscured by windowed child widgets.
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* Alternatively, we could wait for an expose event on widget's window.
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* Both of these are rather hairy, not sure what's best. */
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gdk_event_handler_set (check_for_draw, loop, NULL);
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g_main_loop_run (loop);
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cr = cairo_create (surface);
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