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reftests: Ensure we got a draw event before quitting the main loop

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This commit is contained in:
Benjamin Otte 2011-05-05 05:13:34 +02:00
parent 3f4f900242
commit 66f0544238
1 changed files with 18 additions and 1 deletions
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19
tests/reftests/gtk-reftest.c
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@ -201,6 +201,18 @@ quit_when_idle (gpointer loop)
return FALSE; return FALSE;
} }
static void
check_for_draw (GdkEvent *event, gpointer loop)
{
if (event->type == GDK_EXPOSE)
{
g_idle_add (quit_when_idle, loop);
gdk_event_handler_set ((GdkEventFunc) gtk_main_do_event, NULL, NULL);
}
gtk_main_do_event (event);
}
static cairo_surface_t * static cairo_surface_t *
snapshot_widget (GtkWidget *widget, SnapshotMode mode) snapshot_widget (GtkWidget *widget, SnapshotMode mode)
{ {
@ -217,7 +229,12 @@ snapshot_widget (GtkWidget *widget, SnapshotMode mode)
gtk_widget_get_allocated_height (widget)); gtk_widget_get_allocated_height (widget));
loop = g_main_loop_new (NULL, FALSE); loop = g_main_loop_new (NULL, FALSE);
g_idle_add (quit_when_idle, loop); /* We wait until the widget is drawn for the first time.
* We can not wait for a GtkWidget::draw event, because that might not
* happen if the window is fully obscured by windowed child widgets.
* Alternatively, we could wait for an expose event on widget's window.
* Both of these are rather hairy, not sure what's best. */
gdk_event_handler_set (check_for_draw, loop, NULL);
g_main_loop_run (loop); g_main_loop_run (loop);
cr = cairo_create (surface); cr = cairo_create (surface);