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// 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_ELEMENT_ANIMATIONS_H_
#define CC_ANIMATION_ELEMENT_ANIMATIONS_H_
#include "base/containers/linked_list.h"
#include "base/memory/ref_counted.h"
#include "cc/animation/animation_delegate.h"
#include "cc/animation/layer_animation_controller.h"
#include "cc/animation/layer_animation_value_provider.h"
#include "cc/base/cc_export.h"
namespace gfx {
class ScrollOffset;
class Transform;
}
namespace cc {
class AnimationHost;
class AnimationPlayer;
class FilterOperations;
class LayerAnimationController;
enum class LayerTreeType;
// An ElementAnimations owns a list of all AnimationPlayers, attached to
// the layer. Also, it owns LayerAnimationController instance (1:1
// relationship)
// ElementAnimations object redirects all events from LAC to the list
// of animation layers.
// This is a CC counterpart for blink::ElementAnimations (in 1:1 relationship).
// No pointer to/from respective blink::ElementAnimations object for now.
class CC_EXPORT ElementAnimations : public AnimationDelegate,
public LayerAnimationValueProvider {
public:
static scoped_ptr<ElementAnimations> Create(AnimationHost* host);
~ElementAnimations() override;
int layer_id() const {
return layer_animation_controller_ ? layer_animation_controller_->id() : 0;
}
// Parent AnimationHost.
AnimationHost* animation_host() { return animation_host_; }
const AnimationHost* animation_host() const { return animation_host_; }
LayerAnimationController* layer_animation_controller() const {
return layer_animation_controller_.get();
}
void CreateLayerAnimationController(int layer_id);
void DestroyLayerAnimationController();
void LayerRegistered(int layer_id, LayerTreeType tree_type);
void LayerUnregistered(int layer_id, LayerTreeType tree_type);
bool has_active_value_observer_for_testing() const {
return active_value_observer_;
}
bool has_pending_value_observer_for_testing() const {
return pending_value_observer_;
}
void AddPlayer(AnimationPlayer* player);
void RemovePlayer(AnimationPlayer* player);
bool IsEmpty() const;
typedef base::LinkedList<AnimationPlayer> PlayersList;
typedef base::LinkNode<AnimationPlayer> PlayersListNode;
const PlayersList& players_list() const { return *players_list_.get(); }
void PushPropertiesTo(ElementAnimations* element_animations_impl);
private:
explicit ElementAnimations(AnimationHost* host);
void SetFilterMutated(LayerTreeType tree_type,
const FilterOperations& filters);
void SetOpacityMutated(LayerTreeType tree_type, float opacity);
void SetTransformMutated(LayerTreeType tree_type,
const gfx::Transform& transform);
void SetScrollOffsetMutated(LayerTreeType tree_type,
const gfx::ScrollOffset& scroll_offset);
void SetTransformIsPotentiallyAnimatingChanged(LayerTreeType tree_type,
bool is_animating);
void CreateActiveValueObserver();
void DestroyActiveValueObserver();
void CreatePendingValueObserver();
void DestroyPendingValueObserver();
// AnimationDelegate implementation
void NotifyAnimationStarted(base::TimeTicks monotonic_time,
Animation::TargetProperty target_property,
int group) override;
void NotifyAnimationFinished(base::TimeTicks monotonic_time,
Animation::TargetProperty target_property,
int group) override;
// LayerAnimationValueProvider implementation.
gfx::ScrollOffset ScrollOffsetForAnimation() const override;
scoped_ptr<PlayersList> players_list_;
class ValueObserver;
scoped_ptr<ValueObserver> active_value_observer_;
scoped_ptr<ValueObserver> pending_value_observer_;
// LAC is owned by ElementAnimations (1:1 relationship).
scoped_refptr<LayerAnimationController> layer_animation_controller_;
AnimationHost* animation_host_;
DISALLOW_COPY_AND_ASSIGN(ElementAnimations);
};
} // namespace cc
#endif // CC_ANIMATION_ELEMENT_ANIMATIONS_H_
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