1. With introduction of compressed formats, e.g. ETC1, the number of
[chromium-blink-merge.git] / cc / animation / animation_registrar.h
blob530239096701cc5b12ab35aed65748a10140130e
1 // Copyright 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CC_ANIMATION_ANIMATION_REGISTRAR_H_
6 #define CC_ANIMATION_ANIMATION_REGISTRAR_H_
8 #include "base/containers/hash_tables.h"
9 #include "base/memory/ref_counted.h"
10 #include "base/memory/scoped_ptr.h"
11 #include "cc/animation/animation_events.h"
12 #include "cc/base/cc_export.h"
14 namespace cc {
16 class LayerAnimationController;
18 class CC_EXPORT AnimationRegistrar {
19 public:
20 typedef base::hash_map<int, LayerAnimationController*> AnimationControllerMap;
22 static scoped_ptr<AnimationRegistrar> Create() {
23 return make_scoped_ptr(new AnimationRegistrar());
26 virtual ~AnimationRegistrar();
28 // If an animation has been registered for the given id, return it. Otherwise
29 // creates a new one and returns a scoped_refptr to it.
30 scoped_refptr<LayerAnimationController> GetAnimationControllerForId(int id);
32 // Registers the given animation controller as active. An active animation
33 // controller is one that has a running animation that needs to be ticked.
34 void DidActivateAnimationController(LayerAnimationController* controller);
36 // Unregisters the given animation controller. When this happens, the
37 // animation controller will no longer be ticked (since it's not active). It
38 // is not an error to call this function with a deactivated controller.
39 void DidDeactivateAnimationController(LayerAnimationController* controller);
41 // Registers the given controller as alive.
42 void RegisterAnimationController(LayerAnimationController* controller);
44 // Unregisters the given controller as alive.
45 void UnregisterAnimationController(LayerAnimationController* controller);
47 const AnimationControllerMap& active_animation_controllers_for_testing()
48 const {
49 return active_animation_controllers_;
52 const AnimationControllerMap& all_animation_controllers_for_testing() const {
53 return all_animation_controllers_;
56 void set_supports_scroll_animations(bool supports_scroll_animations) {
57 supports_scroll_animations_ = supports_scroll_animations;
60 bool supports_scroll_animations() { return supports_scroll_animations_; }
62 bool needs_animate_layers() const {
63 return !active_animation_controllers_.empty();
66 bool ActivateAnimations();
67 bool AnimateLayers(base::TimeTicks monotonic_time);
68 bool UpdateAnimationState(bool start_ready_animations,
69 AnimationEventsVector* events);
71 scoped_ptr<AnimationEventsVector> CreateEvents() {
72 return make_scoped_ptr(new AnimationEventsVector());
75 void SetAnimationEvents(scoped_ptr<AnimationEventsVector> events);
77 private:
78 AnimationRegistrar();
80 AnimationControllerMap active_animation_controllers_;
81 AnimationControllerMap all_animation_controllers_;
83 bool supports_scroll_animations_;
85 DISALLOW_COPY_AND_ASSIGN(AnimationRegistrar);
88 } // namespace cc
90 #endif // CC_ANIMATION_ANIMATION_REGISTRAR_H_