blob: 5db3b314cb8b769ac354916eec75f1861e866eed (
plain)
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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
// Copyright 2015 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_COMPOSITOR_CALLBACK_LAYER_ANIMATION_OBSERVER_H_
#define UI_COMPOSITOR_CALLBACK_LAYER_ANIMATION_OBSERVER_H_
#include "base/callback.h"
#include "base/macros.h"
#include "ui/compositor/compositor_export.h"
#include "ui/compositor/layer_animation_observer.h"
namespace ui {
class LayerAnimationSequence;
// A LayerAnimationObserver that invokes a Callback when all observed
// LayerAnimationSequence's have started and finished.
//
// Example usage:
// class Foobar {
// // The Callback that will be invoked when all the animation sequences have
// // started.
// void AnimationStartedCallback(
// const CallbackLayerAnimationObserver& observer) {
// // Do stuff.
// }
//
// // The Callback that will be invoked when all the animation sequences have
// // finished.
// bool AnimationEndedCallback(
// const CallbackLayerAnimationObserver& observer) {
// // Do stuff.
// return true; // Returns true so that |observer| destroys itself.
// }
//
// // Example method that uses the CallbackLayerAnimationObserver.
// void Animate() {
// ui::LayerAnimator* animator_1 = layer_1->GetAnimator();
// ui::LayerAnimator* animator_2 = layer_2->GetAnimator();
// CallbackLayerAnimationObserver* observer =
// new CallbackLayerAnimationObserver(
// base::Bind(&Foobar::AnimationStartedCallback),
// base::Unretained(this));
// base::Bind(&Foobar::AnimationEndedCallback),
// base::Unretained(this));
// animator_1->AddObserver(observer);
// animator_2->AddObserver(observer);
//
// // Set up animation sequences on |animator_1| and |animator_2|.
//
// // The callback won't be invoked until SetActive() is called.
// observer->SetActive();
// }
// }
//
// TODO(bruthig): Unify the CallbackLayerAnimationObserver with the
// ImplicitAnimationObserver. (See www.crbug.com/542825).
class COMPOSITOR_EXPORT CallbackLayerAnimationObserver
: public ui::LayerAnimationObserver {
public:
// The Callback type that will be invoked when all animation sequences have
// been started.
typedef base::Callback<void(const CallbackLayerAnimationObserver&)>
AnimationStartedCallback;
// The Callback type that will be invoked when all animation sequences have
// finished. |this| will be destroyed after invoking the Callback if it
// returns true.
typedef base::Callback<bool(const CallbackLayerAnimationObserver&)>
AnimationEndedCallback;
// A dummy no-op AnimationStartedCallback.
static void DummyAnimationStartedCallback(
const CallbackLayerAnimationObserver&);
// A dummy no-op AnimationEndedCallback that will return
// |should_delete_observer|.
//
// Example usage:
//
// ui::CallbackLayerAnimationObserver* animation_observer =
// new ui::CallbackLayerAnimationObserver(
// base::Bind(&ui::CallbackLayerAnimationObserver::
// DummyAnimationStartedCallback),
// base::Bind(&ui::CallbackLayerAnimationObserver::
// DummyAnimationEndedCallback, false));
static bool DummyAnimationEndedCallback(
bool should_delete_observer,
const CallbackLayerAnimationObserver&);
// Create an instance that will invoke the |animation_started_callback| when
// the animation has started and the |animation_ended_callback| when the
// animation has ended.
CallbackLayerAnimationObserver(
AnimationStartedCallback animation_started_callback,
AnimationEndedCallback animation_ended_callback);
// Create an instance that will invoke the |animation_started_callback| when
// the animation has started and will delete |this| when the animations have
// ended if |should_delete_observer| is true.
CallbackLayerAnimationObserver(
AnimationStartedCallback animation_started_callback,
bool should_delete_observer);
// Create an instance that will invoke the |animation_ended_callback| when the
// animations have ended.
explicit CallbackLayerAnimationObserver(
AnimationEndedCallback animation_ended_callback);
~CallbackLayerAnimationObserver() override;
bool active() const { return active_; }
// The callbacks will not be invoked until SetActive() has been called. This
// allows each sequence to be attached before checking if the sequences have
// finished.
void SetActive();
int aborted_count() const { return aborted_count_; }
int successful_count() const { return successful_count_; }
// ui::LayerAnimationObserver:
void OnLayerAnimationStarted(ui::LayerAnimationSequence* sequence) override;
void OnLayerAnimationEnded(ui::LayerAnimationSequence* sequence) override;
void OnLayerAnimationAborted(ui::LayerAnimationSequence* sequence) override;
void OnLayerAnimationScheduled(ui::LayerAnimationSequence* sequence) override;
protected:
// ui::LayerAnimationObserver:
bool RequiresNotificationWhenAnimatorDestroyed() const override;
void OnAttachedToSequence(ui::LayerAnimationSequence* sequence) override;
void OnDetachedFromSequence(ui::LayerAnimationSequence* sequence) override;
private:
int GetNumSequencesCompleted();
// Checks if all attached sequences have been started and invokes
// |animation_started_callback_| if |active_| is true.
void CheckAllSequencesStarted();
// Checks if all attached sequences have completed and invokes
// |animation_ended_callback_| if |active_| is true.
void CheckAllSequencesCompleted();
// Allows the callbacks to be invoked when true.
bool active_ = false;
// The total number of animation sequences that have been attached.
int attached_sequence_count_ = 0;
// The total number of animation sequences that have been detached.
int detached_sequence_count_ = 0;
// The number of animation sequences that have been started.
int started_count_ = 0;
// The number of animation sequences that were aborted.
int aborted_count_ = 0;
// The number of animation sequences that completed successfully.
int successful_count_ = 0;
// The callback to invoke once all the animation sequences have been started.
AnimationStartedCallback animation_started_callback_;
// The callback to invoke once all the animation sequences have finished.
AnimationEndedCallback animation_ended_callback_;
// Set to true in the destructor (if non-NULL). Used to detect deletion while
// calling out.
bool* destroyed_ = nullptr;
DISALLOW_COPY_AND_ASSIGN(CallbackLayerAnimationObserver);
};
} // namespace ui
#endif // UI_COMPOSITOR_CALLBACK_LAYER_ANIMATION_OBSERVER_H_
|