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clutter/gesture: Add a new ClutterAction for touch and mouse gestures
Introduce ClutterGesture, a new ClutterAction subclass and the successor of ClutterGestureAction that brings the necessary tools to handle sequences of events and abstract touch and mouse gestures from those. The big difference compared to ClutterGestureAction is that ClutterGesture provides the implementation with point_added/moved/ended and sequences_cancelled events and expects the implementation to move the ClutterGesture through the ClutterGestureState state machine. This state machine is then used internally by ClutterGesture to coordinate with other gestures. With the next commits, ClutterGesture will handle relationships between conflicting gestures completely by itself, allowing the implementation or the user to specify the details of the relationship between two gestures. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2389>
This commit is contained in:
Jonas Dreßler
parent
2803c381ec
commit
7dd37558b1
@ -1230,4 +1230,15 @@ typedef enum
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CLUTTER_GRAB_STATE_KEYBOARD),
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} ClutterGrabState;
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typedef enum /*< prefix=CLUTTER_GESTURE_STATE >*/
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{
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CLUTTER_GESTURE_STATE_WAITING,
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CLUTTER_GESTURE_STATE_POSSIBLE,
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CLUTTER_GESTURE_STATE_RECOGNIZING,
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CLUTTER_GESTURE_STATE_COMPLETED,
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CLUTTER_GESTURE_STATE_CANCELLED,
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CLUTTER_N_GESTURE_STATES
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} ClutterGestureState;
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G_END_DECLS
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1422
clutter/clutter/clutter-gesture.c
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1422
clutter/clutter/clutter-gesture.c
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File diff suppressed because it is too large
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147
clutter/clutter/clutter-gesture.h
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147
clutter/clutter/clutter-gesture.h
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@ -0,0 +1,147 @@
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/*
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* Copyright (C) 2023 Jonas Dreßler <verdre@v0yd.nl>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#include <clutter/clutter-action.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_GESTURE (clutter_gesture_get_type ())
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CLUTTER_EXPORT
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G_DECLARE_DERIVABLE_TYPE (ClutterGesture, clutter_gesture,
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CLUTTER, GESTURE, ClutterAction)
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struct _ClutterGestureClass
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{
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ClutterActionClass parent_class;
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/**
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* ClutterGestureClass::should_handle_sequence: (skip)
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*/
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gboolean (* should_handle_sequence) (ClutterGesture *self,
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const ClutterEvent *sequence_begin_event);
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/**
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* ClutterGestureClass::point_began: (skip)
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*/
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void (* point_began) (ClutterGesture *self,
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unsigned int sequence_index);
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/**
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* ClutterGestureClass::point_moved: (skip)
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*/
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void (* point_moved) (ClutterGesture *self,
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unsigned int sequence_index);
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/**
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* ClutterGestureClass::point_ended: (skip)
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*/
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void (* point_ended) (ClutterGesture *self,
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unsigned int sequence_index);
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/**
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* ClutterGestureClass::sequences_cancelled: (skip)
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*/
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void (* sequences_cancelled) (ClutterGesture *self,
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unsigned int *sequences,
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unsigned int n_sequences);
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/**
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* ClutterGestureClass::state_changed: (skip)
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*/
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void (* state_changed) (ClutterGesture *self,
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ClutterGestureState old_state,
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ClutterGestureState new_state);
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/**
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* ClutterGestureClass::crossing_event: (skip)
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*/
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void (* crossing_event) (ClutterGesture *self,
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unsigned int sequence_index,
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ClutterEventType type,
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uint32_t time,
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ClutterEventFlags flags,
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ClutterActor *source_actor,
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ClutterActor *related_actor);
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/**
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* ClutterGestureClass::may_recognize: (skip)
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*/
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gboolean (* may_recognize) (ClutterGesture *self);
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};
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CLUTTER_EXPORT
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void clutter_gesture_set_state (ClutterGesture *self,
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ClutterGestureState state);
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CLUTTER_EXPORT
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ClutterGestureState clutter_gesture_get_state (ClutterGesture *self);
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CLUTTER_EXPORT
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void clutter_gesture_cancel (ClutterGesture *self);
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CLUTTER_EXPORT
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void clutter_gesture_reset_state_machine (ClutterGesture *self);
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CLUTTER_EXPORT
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unsigned int clutter_gesture_get_n_points (ClutterGesture *self);
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CLUTTER_EXPORT
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unsigned int * clutter_gesture_get_points (ClutterGesture *self,
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size_t *n_points);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_coords (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_coords_abs (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_begin_coords (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_begin_coords_abs (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_previous_coords (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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void clutter_gesture_get_point_previous_coords_abs (ClutterGesture *self,
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int point_index,
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graphene_point_t *coords_out);
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CLUTTER_EXPORT
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const ClutterEvent * clutter_gesture_get_point_event (ClutterGesture *self,
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int point_index);
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G_END_DECLS
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@ -35,3 +35,4 @@ VOID:STRING,INT
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VOID:UINT,STRING,UINT
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VOID:UINT,UINT
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VOID:STRING,INT,POINTER
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VOID:VOID
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@ -59,6 +59,7 @@
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#include "clutter/clutter-frame-clock.h"
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#include "clutter/clutter-frame.h"
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#include "clutter/clutter-gesture-action.h"
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#include "clutter/clutter-gesture.h"
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#include "clutter/clutter-grab.h"
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#include "clutter/clutter-grid-layout.h"
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#include "clutter/clutter-image.h"
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@ -33,6 +33,7 @@ clutter_headers = [
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'clutter-frame-clock.h',
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'clutter-frame.h',
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'clutter-gesture-action.h',
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'clutter-gesture.h',
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'clutter-grab.h',
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'clutter-grid-layout.h',
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'clutter-image.h',
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@ -117,6 +118,7 @@ clutter_sources = [
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'clutter-frame-clock.c',
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'clutter-frame.c',
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'clutter-gesture-action.c',
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'clutter-gesture.c',
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'clutter-grab.c',
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'clutter-graphene.c',
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'clutter-grid-layout.c',
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