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clutter: Add function to update input device actors to clutter-main

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We're moving keeping track of input devices and their associated actors
out of ClutterInputDevice, this commit basically adds replacements for
clutter_input_device_update() and clutter_input_device_set_actor() to
clutter-main and shuffles the internals of those functions around a bit
for clarity.

clutter_stage_update_device() is made available in clutter-mutter.h
because we need to update the actor of input devices not only from
ClutterStage (when repicking after relayout), but also from
MetaWaylandPointer (inside meta_wayland_pointer_repick()).

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1633>
This commit is contained in:
Jonas Dreßler 2020-10-15 16:46:08 +02:00
parent 98a5cb37d9
commit a9a9d27ead
2 changed files with 155 additions and 0 deletions
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146
clutter/clutter/clutter-main.c
View File

@ -65,6 +65,7 @@
#include "clutter-paint-node-private.h"
#include "clutter-private.h"
#include "clutter-settings-private.h"
#include "clutter-stage.h"
#include "clutter-stage-manager.h"
#include "clutter-stage-private.h"
#include "clutter-backend-private.h"
@ -1553,6 +1554,151 @@ clutter_do_event (ClutterEvent *event)
_clutter_stage_queue_event (event->any.stage, event, TRUE);
}
static void
create_crossing_event (ClutterStage *stage,
ClutterInputDevice *device,
ClutterEventSequence *sequence,
ClutterEventType event_type,
ClutterActor *source,
ClutterActor *related,
graphene_point_t coords,
uint32_t time)
{
ClutterEvent *event;
event = clutter_event_new (event_type);
event->crossing.time = time;
event->crossing.flags = 0;
event->crossing.stage = stage;
event->crossing.source = source;
event->crossing.x = coords.x;
event->crossing.y = coords.y;
event->crossing.related = related;
event->crossing.sequence = sequence;
clutter_event_set_device (event, device);
/* we need to make sure that this event is processed
* before any other event we might have queued up until
* now, so we go on, and synthesize the event emission
* ourselves
*/
_clutter_process_event (event);
clutter_event_free (event);
}
void
clutter_stage_update_device (ClutterStage *stage,
ClutterInputDevice *device,
ClutterEventSequence *sequence,
graphene_point_t point,
uint32_t time,
ClutterActor *new_actor,
gboolean emit_crossing)
{
ClutterInputDeviceType device_type;
ClutterActor *old_actor;
gboolean device_actor_changed;
device_type = clutter_input_device_get_device_type (device);
g_assert (device_type != CLUTTER_KEYBOARD_DEVICE &&
device_type != CLUTTER_PAD_DEVICE);
old_actor = clutter_stage_get_device_actor (stage, device, sequence);
device_actor_changed = new_actor != old_actor;
if (device_actor_changed)
{
CLUTTER_NOTE (EVENT,
"Updating actor under cursor (device %s, at %.2f, %.2f): %s",
clutter_input_device_get_device_name (device),
point.x,
point.y,
_clutter_actor_get_debug_name (new_actor));
if (old_actor && emit_crossing)
{
create_crossing_event (stage,
device, sequence,
CLUTTER_LEAVE,
old_actor, new_actor,
point, time);
}
}
clutter_stage_update_device_entry (stage,
device, sequence,
point,
new_actor);
if (device_actor_changed)
{
if (new_actor && emit_crossing)
{
create_crossing_event (stage,
device, sequence,
CLUTTER_ENTER,
new_actor, old_actor,
point, time);
}
}
}
static ClutterActor *
update_device_for_event (ClutterStage *stage,
ClutterEvent *event,
gboolean emit_crossing)
{
ClutterInputDevice *device = clutter_event_get_device (event);
ClutterEventSequence *sequence = clutter_event_get_event_sequence (event);
ClutterActor *new_actor;
graphene_point_t point;
uint32_t time;
clutter_event_get_coords (event, &point.x, &point.y);
time = clutter_event_get_time (event);
new_actor =
_clutter_stage_do_pick (stage, point.x, point.y, CLUTTER_PICK_REACTIVE);
/* Picking should never fail, but if it does, we bail out here */
g_return_val_if_fail (new_actor != NULL, NULL);
clutter_stage_update_device (stage,
device, sequence,
point,
time,
new_actor,
emit_crossing);
return new_actor;
}
static void
remove_device_for_event (ClutterStage *stage,
ClutterEvent *event,
gboolean emit_crossing)
{
ClutterInputDevice *device = clutter_event_get_device (event);
ClutterEventSequence *sequence = clutter_event_get_event_sequence (event);
graphene_point_t point;
uint32_t time;
clutter_event_get_coords (event, &point.x, &point.y);
time = clutter_event_get_time (event);
clutter_stage_update_device (stage,
device, sequence,
point,
time,
NULL,
TRUE);
clutter_stage_remove_device_entry (stage, device, sequence);
}
static void
_clutter_process_event_details (ClutterActor *stage,
ClutterMainContext *context,

9
clutter/clutter/clutter-mutter.h
View File

@ -75,6 +75,15 @@ CLUTTER_EXPORT
gboolean clutter_seat_handle_event_post (ClutterSeat *seat,
const ClutterEvent *event);
CLUTTER_EXPORT
void clutter_stage_update_device (ClutterStage *stage,
ClutterInputDevice *device,
ClutterEventSequence *sequence,
graphene_point_t point,
uint32_t time,
ClutterActor *new_actor,
gboolean emit_crossing);
CLUTTER_EXPORT
void clutter_stage_get_device_coords (ClutterStage *stage,
ClutterInputDevice *device,