chromium/cc/animation/animation.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_ANIMATION_ANIMATION_H_
#define CC_ANIMATION_ANIMATION_H_

#include <memory>
#include <string>
#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "cc/animation/animation_export.h"
#include "cc/animation/element_animations.h"
#include "cc/animation/keyframe_model.h"
#include "cc/base/protected_sequence_synchronizer.h"
#include "cc/paint/element_id.h"
#include "ui/gfx/animation/keyframe/animation_curve.h"

namespace cc {

class AnimationDelegate;
class AnimationEvents;
class AnimationHost;
class AnimationTimeline;
class KeyframeEffect;
struct AnimationEvent;

// An Animation is responsible for managing animating properties for a set of
// targets. Each target is represented by a KeyframeEffect and can be animating
// multiple properties on that target; see the KeyframeEffect class.
//
// A particular Animation may not own all the KeyframeEffects for a given
// target. Animation is only a grouping mechanism for related effects, and the
// grouping relationship is defined by the client. It is also the client's
// responsibility to deal with any conflicts that arise from animating the same
// property of the same target across multiple Animations.
//
// Each Animation has a copy on the impl thread, and will take care of
// synchronizing to/from the impl thread when requested.
//
// There is a 1:1 relationship between Animation and KeyframeEffect.
class CC_ANIMATION_EXPORT Animation : public base::RefCounted<Animation>,
                                      public ProtectedSequenceSynchronizer { … };

}  // namespace cc

#endif  // CC_ANIMATION_ANIMATION_H_