Reland r107720 - Enable the new layer animation framework.

ui/gfx/compositor/layer_animation_manager.h

-// Copyright (c) 2011 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_GFX_COMPOSITOR_LAYER_ANIMATION_MANAGER_H_
-#define UI_GFX_COMPOSITOR_LAYER_ANIMATION_MANAGER_H_
-#pragma once
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "third_party/skia/include/core/SkScalar.h"
-#include "third_party/skia/include/utils/SkMatrix44.h"
-#include "ui/base/animation/animation_delegate.h"
-#include "ui/gfx/compositor/compositor_export.h"
-
-namespace gfx {
-class Point;
-}
-
-namespace ui {
-
-class Animation;
-class Layer;
-class LayerAnimatorDelegate;
-class Transform;
-
-// LayerAnimationManager manages animating various properties of a Layer.
-class COMPOSITOR_EXPORT LayerAnimationManager : public ui::AnimationDelegate {
- public:
-  // Types of properties that can be animated.
-  enum AnimationProperty {
-    LOCATION,
-    OPACITY,
-    TRANSFORM,
-  };
-
-  explicit LayerAnimationManager(Layer* layer);
-  virtual ~LayerAnimationManager();
-
-  // Sets the animation to use. LayerAnimationManager takes ownership of the
-  // animation.
-  void SetAnimation(Animation* animation);
-
-  ui::Layer* layer() { return layer_; }
-
-  // Animates the layer to the specified point. The point is relative to the
-  // parent layer.
-  void AnimateToPoint(const gfx::Point& target);
-
-  // Animates the transform from the current transform to |transform|.
-  void AnimateTransform(const Transform& transform);
-
-  // Animates the opacity from the current opacity to |target_opacity|.
-  void AnimateOpacity(float target_opacity);
-
-  // Returns the target value for the specified type. If the specified property
-  // is not animating, the current value is returned.
-  gfx::Point GetTargetPoint();
-  float GetTargetOpacity();
-  ui::Transform GetTargetTransform();
-
-  // Returns true if animating |property|.
-  bool IsAnimating(AnimationProperty property) const;
-
-  // Returns true if the animation is running.
-  bool IsRunning() const;
-
-  // Returns true if the animation has progressed at least once since
-  // SetAnimation() was invoked.
-  bool got_initial_tick() const { return got_initial_tick_; }
-
-  // AnimationDelegate:
-  virtual void AnimationProgressed(const Animation* animation) OVERRIDE;
-  virtual void AnimationEnded(const Animation* animation) OVERRIDE;
-
- private:
-  // Parameters used when animating the location.
-  struct LocationParams {
-    int start_x;
-    int start_y;
-    int target_x;
-    int target_y;
-  };
-
-  // Parameters used when animating the transform.
-  struct TransformParams {
-    SkMScalar start[16];
-    SkMScalar target[16];
-  };
-
-  // Parameters used when animating the opacity.
-  struct OpacityParams {
-    float start;
-    float target;
-  };
-
-  union Params {
-    LocationParams location;
-    OpacityParams opacity;
-    TransformParams transform;
-  };
-
-  typedef std::map<AnimationProperty, Params> Elements;
-
-  // Stops animating the specified property. This does not set the property
-  // being animated to its final value.
-  void StopAnimating(AnimationProperty property);
-
-  LayerAnimatorDelegate* delegate();
-
-  // The layer.
-  Layer* layer_;
-
-  // Properties being animated.
-  Elements elements_;
-
-  scoped_ptr<ui::Animation> animation_;
-
-  bool got_initial_tick_;
-
-  DISALLOW_COPY_AND_ASSIGN(LayerAnimationManager);
-};
-
-}  // namespace ui
-
-#endif  // UI_GFX_COMPOSITOR_LAYER_ANIMATION_MANAGER_H_