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tests/utils: Raise error if monitors changed while waiting for paint

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If it does, the views we are waiting for won't get painted.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3307>
This commit is contained in:
Jonas Ådahl 2023-11-25 12:12:58 +01:00 committed by Pascal Nowack
parent 46da153548
commit 5dc0824ea9
1 changed files with 18 additions and 4 deletions
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22
src/tests/meta-test-utils.c
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@ -789,23 +789,37 @@ on_view_presented (ClutterStage *stage,
*presented_views = g_list_remove (*presented_views, view);
}
static void
raise_error (const char *message)
{
g_error ("%s", message);
}
void
meta_wait_for_paint (MetaContext *context)
{
MetaBackend *backend = meta_context_get_backend (context);
ClutterActor *stage = meta_backend_get_stage (backend);
MetaRenderer *renderer = meta_backend_get_renderer (backend);
MetaMonitorManager *monitor_manager = meta_backend_get_monitor_manager (backend);
GList *views;
gulong handler_id;
gulong presented_handler_id;
gulong monitors_changed_handler_id;
monitors_changed_handler_id =
g_signal_connect_swapped (monitor_manager, "monitors-changed",
G_CALLBACK (raise_error),
(char *) "Monitors changed while waiting for paint");
clutter_actor_queue_redraw (stage);
views = g_list_copy (meta_renderer_get_views (renderer));
handler_id = g_signal_connect (stage, "presented",
G_CALLBACK (on_view_presented), &views);
presented_handler_id = g_signal_connect (stage, "presented",
G_CALLBACK (on_view_presented), &views);
while (views)
g_main_context_iteration (NULL, TRUE);
g_signal_handler_disconnect (stage, handler_id);
g_signal_handler_disconnect (stage, presented_handler_id);
g_signal_handler_disconnect (monitor_manager, monitors_changed_handler_id);
}
MetaVirtualMonitor *