summaryrefslogtreecommitdiffstats
path: root/cc/animation/animation_host.h
blob: c27ecde688d252a5759e248f8e8d482f455b013c (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
// 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 CC_ANIMATION_ANIMATION_HOST_H_
#define CC_ANIMATION_ANIMATION_HOST_H_

#include <vector>

#include "base/containers/scoped_ptr_hash_map.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "cc/animation/animation_events.h"
#include "cc/base/cc_export.h"
#include "cc/trees/mutator_host_client.h"

namespace gfx {
class ScrollOffset;
}

namespace cc {

class AnimationPlayer;
class AnimationRegistrar;
class AnimationTimeline;
class ElementAnimations;
class LayerAnimationController;
class LayerTreeHost;

enum class ThreadInstance { MAIN, IMPL };

typedef std::vector<scoped_refptr<AnimationTimeline>> AnimationTimelineList;

// An AnimationHost contains all the state required to play animations.
// Specifically, it owns all the AnimationTimelines objects.
// There is just one AnimationHost for LayerTreeHost on main renderer thread
// and just one AnimationHost for LayerTreeHostImpl on impl thread.
// We synchronize them during the commit process in a one-way data flow process
// (PushPropertiesTo).
// An AnimationHost talks to its correspondent LayerTreeHost via
// LayerTreeMutatorsClient interface.
// AnimationHost has it's own instance of AnimationRegistrar,
// we want to merge AnimationRegistrar into AnimationHost.
class CC_EXPORT AnimationHost {
 public:
  static scoped_ptr<AnimationHost> Create(ThreadInstance thread_instance);
  virtual ~AnimationHost();

  void AddAnimationTimeline(scoped_refptr<AnimationTimeline> timeline);
  void RemoveAnimationTimeline(scoped_refptr<AnimationTimeline> timeline);
  AnimationTimeline* GetTimelineById(int timeline_id) const;

  void ClearTimelines();

  void RegisterLayer(int layer_id, LayerTreeType tree_type);
  void UnregisterLayer(int layer_id, LayerTreeType tree_type);

  void RegisterPlayerForLayer(int layer_id, AnimationPlayer* player);
  void UnregisterPlayerForLayer(int layer_id, AnimationPlayer* player);

  ElementAnimations* GetElementAnimationsForLayerId(int layer_id) const;

  // TODO(loyso): Get rid of LayerAnimationController.
  LayerAnimationController* GetControllerForLayerId(int layer_id) const;

  // Parent LayerTreeHost or LayerTreeHostImpl.
  MutatorHostClient* mutator_host_client() { return mutator_host_client_; }
  const MutatorHostClient* mutator_host_client() const {
    return mutator_host_client_;
  }
  void SetMutatorHostClient(MutatorHostClient* client);

  void SetNeedsCommit();

  void PushPropertiesTo(AnimationHost* host_impl);

  AnimationRegistrar* animation_registrar() const {
    return animation_registrar_.get();
  }

  void SetSupportsScrollAnimations(bool supports_scroll_animations);
  bool SupportsScrollAnimations() const;
  bool NeedsAnimateLayers() const;

  bool ActivateAnimations();
  bool AnimateLayers(base::TimeTicks monotonic_time);
  bool UpdateAnimationState(bool start_ready_animations,
                            AnimationEventsVector* events);

  scoped_ptr<AnimationEventsVector> CreateEvents();
  void SetAnimationEvents(scoped_ptr<AnimationEventsVector> events);

  bool ScrollOffsetAnimationWasInterrupted(int layer_id) const;

  bool IsAnimatingFilterProperty(int layer_id, LayerTreeType tree_type) const;
  bool IsAnimatingOpacityProperty(int layer_id, LayerTreeType tree_type) const;
  bool IsAnimatingTransformProperty(int layer_id,
                                    LayerTreeType tree_type) const;

  bool HasPotentiallyRunningFilterAnimation(int layer_id,
                                            LayerTreeType tree_type) const;
  bool HasPotentiallyRunningOpacityAnimation(int layer_id,
                                             LayerTreeType tree_type) const;
  bool HasPotentiallyRunningTransformAnimation(int layer_id,
                                               LayerTreeType tree_type) const;

  bool HasAnyAnimationTargetingProperty(
      int layer_id,
      Animation::TargetProperty property) const;

  bool FilterIsAnimatingOnImplOnly(int layer_id) const;
  bool OpacityIsAnimatingOnImplOnly(int layer_id) const;
  bool TransformIsAnimatingOnImplOnly(int layer_id) const;

  bool HasFilterAnimationThatInflatesBounds(int layer_id) const;
  bool HasTransformAnimationThatInflatesBounds(int layer_id) const;
  bool HasAnimationThatInflatesBounds(int layer_id) const;

  bool FilterAnimationBoundsForBox(int layer_id,
                                   const gfx::BoxF& box,
                                   gfx::BoxF* bounds) const;
  bool TransformAnimationBoundsForBox(int layer_id,
                                      const gfx::BoxF& box,
                                      gfx::BoxF* bounds) const;

  bool HasOnlyTranslationTransforms(int layer_id) const;
  bool AnimationsPreserveAxisAlignment(int layer_id) const;

  bool MaximumTargetScale(int layer_id, float* max_scale) const;
  bool AnimationStartScale(int layer_id, float* start_scale) const;

  bool HasAnyAnimation(int layer_id) const;
  bool HasActiveAnimation(int layer_id) const;

  void ImplOnlyScrollAnimationCreate(int layer_id,
                                     const gfx::ScrollOffset& target_offset,
                                     const gfx::ScrollOffset& current_offset);
  bool ImplOnlyScrollAnimationUpdateTarget(
      int layer_id,
      const gfx::Vector2dF& scroll_delta,
      const gfx::ScrollOffset& max_scroll_offset,
      base::TimeTicks frame_monotonic_time);

 private:
  explicit AnimationHost(ThreadInstance thread_instance);

  void PushTimelinesToImplThread(AnimationHost* host_impl) const;
  void RemoveTimelinesFromImplThread(AnimationHost* host_impl) const;
  void PushPropertiesToImplThread(AnimationHost* host_impl);

  void EraseTimelines(AnimationTimelineList::iterator begin,
                      AnimationTimelineList::iterator end);

  // TODO(loyso): For now AnimationPlayers share LayerAnimationController object
  // if they are attached to the same element(layer). Note that Element can
  // contain many Layers.
  typedef base::ScopedPtrHashMap<int, scoped_ptr<ElementAnimations>>
      LayerToElementAnimationsMap;
  LayerToElementAnimationsMap layer_to_element_animations_map_;

  AnimationTimelineList timelines_;
  scoped_ptr<AnimationRegistrar> animation_registrar_;
  MutatorHostClient* mutator_host_client_;

  class ScrollOffsetAnimations;
  scoped_ptr<ScrollOffsetAnimations> scroll_offset_animations_;

  const ThreadInstance thread_instance_;

  DISALLOW_COPY_AND_ASSIGN(AnimationHost);
};

}  // namespace cc

#endif  // CC_ANIMATION_ANIMATION_HOST_H_