1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
#define UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
#include <stdint.h>
#include <map>
#include <vector>
#include "base/macros.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/scoped_ptr.h"
#include "ui/events/event_constants.h"
#include "ui/events/events_export.h"
#include "ui/events/gestures/gesture_provider_aura.h"
#include "ui/events/gestures/gesture_recognizer.h"
#include "ui/gfx/geometry/point.h"
namespace ui {
class GestureConsumer;
class GestureEvent;
class GestureEventHelper;
class TouchEvent;
// TODO(tdresser): Once the unified gesture recognition process sticks
// (crbug.com/332418), GestureRecognizerImpl can be cleaned up
// significantly.
class EVENTS_EXPORT GestureRecognizerImpl : public GestureRecognizer,
public GestureProviderAuraClient {
public:
typedef std::map<int, GestureConsumer*> TouchIdToConsumerMap;
GestureRecognizerImpl();
~GestureRecognizerImpl() override;
std::vector<GestureEventHelper*>& helpers() { return helpers_; }
// Overridden from GestureRecognizer
GestureConsumer* GetTouchLockedTarget(const TouchEvent& event) override;
GestureConsumer* GetTargetForLocation(const gfx::PointF& location,
int source_device_id) override;
void CancelActiveTouchesExcept(GestureConsumer* not_cancelled) override;
void TransferEventsTo(GestureConsumer* current_consumer,
GestureConsumer* new_consumer) override;
bool GetLastTouchPointForTarget(GestureConsumer* consumer,
gfx::PointF* point) override;
bool CancelActiveTouches(GestureConsumer* consumer) override;
protected:
virtual GestureProviderAura* GetGestureProviderForConsumer(
GestureConsumer* c);
private:
// Sets up the target consumer for gestures based on the touch-event.
void SetupTargets(const TouchEvent& event, GestureConsumer* consumer);
void DispatchGestureEvent(GestureConsumer* raw_input_consumer,
GestureEvent* event);
// Overridden from GestureRecognizer
bool ProcessTouchEventPreDispatch(TouchEvent* event,
GestureConsumer* consumer) override;
Gestures* AckTouchEvent(uint32_t unique_event_id,
ui::EventResult result,
GestureConsumer* consumer) override;
bool CleanupStateForConsumer(GestureConsumer* consumer) override;
void AddGestureEventHelper(GestureEventHelper* helper) override;
void RemoveGestureEventHelper(GestureEventHelper* helper) override;
// Overridden from GestureProviderAuraClient
void OnGestureEvent(GestureConsumer* raw_input_consumer,
GestureEvent* event) override;
// Convenience method to find the GestureEventHelper that can dispatch events
// to a specific |consumer|.
GestureEventHelper* FindDispatchHelperForConsumer(GestureConsumer* consumer);
std::map<GestureConsumer*, GestureProviderAura*> consumer_gesture_provider_;
// |touch_id_target_| maps a touch-id to its target window.
// touch-ids are removed from |touch_id_target_| on
// ET_TOUCH_RELEASE and ET_TOUCH_CANCEL.
TouchIdToConsumerMap touch_id_target_;
std::vector<GestureEventHelper*> helpers_;
DISALLOW_COPY_AND_ASSIGN(GestureRecognizerImpl);
};
// Provided only for testing:
EVENTS_EXPORT void SetGestureRecognizerForTesting(
GestureRecognizer* gesture_recognizer);
} // namespace ui
#endif // UI_EVENTS_GESTURES_GESTURE_RECOGNIZER_IMPL_H_
|
