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clutter: Add a GRABS debug flag

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Now that we have two kinds of grabs, the intricacies of event delivery
got slightly more complicated. So this seems like a good point to
introduce a new GRABS debug flag that gives an overview of which grabs
are currently in effect.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2342>
This commit is contained in:
Jonas Dreßler 2022-04-06 12:19:27 +02:00 committed by Marge Bot
parent 9d1c212a04
commit 2dd851d9f4
3 changed files with 47 additions and 0 deletions
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1
clutter/clutter/clutter-main.c
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@ -116,6 +116,7 @@ static const GDebugKey clutter_debug_keys[] = {
{ "oob-transforms", CLUTTER_DEBUG_OOB_TRANSFORMS }, { "oob-transforms", CLUTTER_DEBUG_OOB_TRANSFORMS },
{ "frame-timings", CLUTTER_DEBUG_FRAME_TIMINGS }, { "frame-timings", CLUTTER_DEBUG_FRAME_TIMINGS },
{ "detailed-trace", CLUTTER_DEBUG_DETAILED_TRACE }, { "detailed-trace", CLUTTER_DEBUG_DETAILED_TRACE },
{ "grabs", CLUTTER_DEBUG_GRABS },
}; };
#endif /* CLUTTER_ENABLE_DEBUG */ #endif /* CLUTTER_ENABLE_DEBUG */

1
clutter/clutter/clutter-main.h
View File

@ -55,6 +55,7 @@ typedef enum
CLUTTER_DEBUG_OOB_TRANSFORMS = 1 << 16, CLUTTER_DEBUG_OOB_TRANSFORMS = 1 << 16,
CLUTTER_DEBUG_FRAME_TIMINGS = 1 << 17, CLUTTER_DEBUG_FRAME_TIMINGS = 1 << 17,
CLUTTER_DEBUG_DETAILED_TRACE = 1 << 18, CLUTTER_DEBUG_DETAILED_TRACE = 1 << 18,
CLUTTER_DEBUG_GRABS = 1 << 19,
} ClutterDebugFlag; } ClutterDebugFlag;
typedef enum typedef enum

45
clutter/clutter/clutter-stage.c
View File

@ -4085,6 +4085,20 @@ clutter_stage_grab (ClutterStage *stage,
priv->topmost_grab->prev = grab; priv->topmost_grab->prev = grab;
priv->topmost_grab = grab; priv->topmost_grab = grab;
if (G_UNLIKELY (clutter_debug_flags & CLUTTER_DEBUG_GRABS))
{
unsigned int n_grabs = 0;
ClutterGrab *g;
for (g = priv->topmost_grab; g != NULL; g = g->next)
n_grabs++;
CLUTTER_NOTE (GRABS,
"[grab=%p] Attached seat grab (n_grabs: %u) on actor: %s",
grab, n_grabs, _clutter_actor_get_debug_name (actor));
}
clutter_actor_attach_grab (actor, grab); clutter_actor_attach_grab (actor, grab);
clutter_stage_notify_grab (stage, grab, grab->next); clutter_stage_notify_grab (stage, grab, grab->next);
@ -4132,6 +4146,19 @@ clutter_stage_unlink_grab (ClutterStage *stage,
priv->grab_state = CLUTTER_GRAB_STATE_NONE; priv->grab_state = CLUTTER_GRAB_STATE_NONE;
} }
if (G_UNLIKELY (clutter_debug_flags & CLUTTER_DEBUG_GRABS))
{
unsigned int n_grabs = 0;
ClutterGrab *g;
for (g = priv->topmost_grab; g != NULL; g = g->next)
n_grabs++;
CLUTTER_NOTE (GRABS,
"[grab=%p] Detached seat grab (n_grabs: %u)",
grab, n_grabs);
}
grab->next = NULL; grab->next = NULL;
grab->prev = NULL; grab->prev = NULL;
} }
@ -4311,6 +4338,10 @@ setup_implicit_grab (PointerDeviceEntry *entry)
return FALSE; return FALSE;
} }
CLUTTER_NOTE (GRABS,
"[device=%p sequence=%p] Aquiring implicit grab",
entry->device, entry->sequence);
g_assert (entry->press_count == 0); g_assert (entry->press_count == 0);
g_assert (entry->event_emission_chain->len == 0); g_assert (entry->event_emission_chain->len == 0);
@ -4331,6 +4362,10 @@ release_implicit_grab (PointerDeviceEntry *entry)
return FALSE; return FALSE;
} }
CLUTTER_NOTE (GRABS,
"[device=%p sequence=%p] Releasing implicit grab",
entry->device, entry->sequence);
g_assert (entry->press_count == 1); g_assert (entry->press_count == 1);
entry->press_count = 0; entry->press_count = 0;
@ -4356,6 +4391,10 @@ clutter_stage_maybe_lost_implicit_grab (ClutterStage *self,
if (!entry->press_count) if (!entry->press_count)
return; return;
CLUTTER_NOTE (GRABS,
"[device=%p sequence=%p] Lost implicit grab",
device, sequence);
for (i = 0; i < entry->event_emission_chain->len; i++) for (i = 0; i < entry->event_emission_chain->len; i++)
{ {
EventReceiver *receiver = EventReceiver *receiver =
@ -4504,6 +4543,12 @@ cancel_implicit_grab_on_actor (PointerDeviceEntry *entry,
unsigned int i; unsigned int i;
ClutterActor *parent = clutter_actor_get_parent (actor); ClutterActor *parent = clutter_actor_get_parent (actor);
CLUTTER_NOTE (GRABS,
"[device=%p sequence=%p] Cancelling implicit grab on actor (%s) "
"due to unmap",
entry->device, entry->sequence,
_clutter_actor_get_debug_name (actor));
for (i = 0; i < entry->event_emission_chain->len; i++) for (i = 0; i < entry->event_emission_chain->len; i++)
{ {
EventReceiver *receiver = EventReceiver *receiver =