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gdk: Ensure GdkFrameClock::flush-events with uncompressed motion

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Sometimes, there may be motion events left in the queue, because at the
time of handlign these motion events the GDK_FRAME_CLOCK_PHASE_FLUSH_EVENTS
phase is not requested.

Ensure that, when finding motion events on a window that does not disable
motion compression, the events are anyways flushed, so they can be processed
early by the window/widget event handlers.

Closes: https://gitlab.gnome.org/GNOME/gtk/-/issues/4946
This commit is contained in:
Carlos Garnacho 2022-10-03 16:39:08 +02:00
parent 1ad49f238c
commit 5ea961ed93
1 changed files with 12 additions and 6 deletions
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16
gdk/gdkevents.c
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@ -258,6 +258,7 @@ _gdk_event_queue_handle_motion_compression (GdkDisplay *display)
GList *pending_motions = NULL;
GdkWindow *pending_motion_window = NULL;
GdkDevice *pending_motion_device = NULL;
gboolean uncompressed_motion = FALSE;
/* If the last N events in the event queue are motion notify
* events for the same window, drop all but the last */
@ -282,10 +283,14 @@ _gdk_event_queue_handle_motion_compression (GdkDisplay *display)
pending_motion_device != event->event.motion.device)
break;
if (!event->event.motion.window->event_compression)
break;
pending_motion_window = event->event.motion.window;
if (!event->event.motion.window->event_compression)
{
uncompressed_motion = TRUE;
break;
}
pending_motion_device = event->event.motion.device;
pending_motions = tmp_list;
@ -301,9 +306,10 @@ _gdk_event_queue_handle_motion_compression (GdkDisplay *display)
pending_motions = next;
}
if (pending_motions &&
if (uncompressed_motion ||
(pending_motions &&
pending_motions == display->queued_events &&
pending_motions == display->queued_tail)
pending_motions == display->queued_tail))
{
GdkFrameClock *clock = gdk_window_get_frame_clock (pending_motion_window);
if (clock) /* might be NULL if window was destroyed */