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window: Add monitor finder using stored IDs

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This will be used to find new monitors on e.g. "winsys ID" of previous
monitors.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2554>
This commit is contained in:
Jonas Ådahl 2022-08-03 22:59:16 +02:00 committed by Marge Bot
parent cf848c577e
commit 4ed9653757
2 changed files with 28 additions and 11 deletions
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2
src/core/window-private.h
View file

@ -851,6 +851,8 @@ void meta_window_activate_full (MetaWindow *window,
META_EXPORT_TEST
MetaLogicalMonitor * meta_window_find_monitor_from_frame_rect (MetaWindow *window);
MetaLogicalMonitor * meta_window_find_monitor_from_id (MetaWindow *window);
MetaLogicalMonitor * meta_window_get_main_logical_monitor (MetaWindow *window);
void meta_window_update_monitor (MetaWindow *window,
MetaWindowUpdateMonitorFlags flags);

37
src/core/window.c
View file

@ -3647,6 +3647,31 @@ find_monitor_by_winsys_id (MetaWindow *window,
return NULL;
}
MetaLogicalMonitor *
meta_window_find_monitor_from_id (MetaWindow *window)
{
MetaContext *context = meta_display_get_context (window->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaLogicalMonitor *old_monitor = window->monitor;
MetaLogicalMonitor *new_monitor;
new_monitor = find_monitor_by_winsys_id (window,
window->preferred_output_winsys_id);
if (old_monitor && !new_monitor)
new_monitor = find_monitor_by_winsys_id (window, old_monitor->winsys_id);
if (!new_monitor)
{
new_monitor =
meta_monitor_manager_get_primary_logical_monitor (monitor_manager);
}
return new_monitor;
}
/* This is called when the monitor setup has changed. The window->monitor
* reference is still "valid", but refer to the previous monitor setup */
void
@ -3669,17 +3694,7 @@ meta_window_update_for_monitors_changed (MetaWindow *window)
}
old = window->monitor;
/* Try the preferred output first */
new = find_monitor_by_winsys_id (window, window->preferred_output_winsys_id);
/* Otherwise, try to find the old output on a new monitor */
if (old && !new)
new = find_monitor_by_winsys_id (window, old->winsys_id);
/* Fall back to primary if everything else failed */
if (!new)
new = meta_monitor_manager_get_primary_logical_monitor (monitor_manager);
new = meta_window_find_monitor_from_id (window);
if (window->tile_mode != META_TILE_NONE)
{