Reland r107720 - Enable the new layer animation framework.

ui/gfx/compositor/layer.h

Index: ui/gfx/compositor/layer.h
diff --git a/ui/gfx/compositor/layer.h b/ui/gfx/compositor/layer.h
index d94d4e6feb5187af8458ac5a6b0500875654e04c..d9371d5c81819336d17db8c7891cc5cf0a208387 100644
--- a/ui/gfx/compositor/layer.h
+++ b/ui/gfx/compositor/layer.h
@@ -18,7 +18,6 @@
 #include "ui/gfx/rect.h"
 #include "ui/gfx/transform.h"
 #include "ui/gfx/compositor/compositor.h"
-#include "ui/gfx/compositor/layer_animation_manager.h"
 #include "ui/gfx/compositor/layer_animator_delegate.h"
 #include "ui/gfx/compositor/layer_delegate.h"
 
@@ -26,8 +25,9 @@ class SkCanvas;
 
 namespace ui {
 
-class Animation;
 class Compositor;
+class LayerAnimator;
+class LayerAnimationSequence;
 class Texture;
 
 // Layer manages a texture, transform and a set of child Layers. Any View that
@@ -84,21 +84,22 @@ class COMPOSITOR_EXPORT Layer :
   // Returns true if this Layer contains |other| somewhere in its children.
   bool Contains(const Layer* other) const;
 
-  // Sets the animation to use for changes to opacity, position or transform.
-  // That is, if you invoke this with non-NULL |animation| is started and any
-  // changes to opacity, position or transform are animated between the current
-  // value and target value. If the current animation is NULL or completed,
-  // changes are immediate. If the opacity, transform or bounds are changed
-  // and the animation is part way through, the animation is canceled and
-  // the bounds, opacity and transfrom and set to the target value.
-  // Layer takes ownership of |animation| and installs it's own delegate on the
-  // animation.
-  void SetAnimation(Animation* animation);
-  bool has_animation() const { return animator_.get() != NULL; }
+  // The layer's animator is responsible for causing automatic animations when
+  // properties are set. It also manages a queue of pending animations and
+  // handles blending of animations.
+  void SetAnimator(LayerAnimator* animator);

[sky, 2011/10/25 04:00:55]

document ownership.

+
+  // Returns the layer's animator. Creates a default animator of one has not
+  // been set. Will not return NULL.
+  LayerAnimator* GetAnimator();
 
   // The transform, relative to the parent.
-  void SetTransform(const ui::Transform& transform);
-  const ui::Transform& transform() const { return transform_; }
+  void SetTransform(const Transform& transform);
+  const Transform& transform() const { return transform_; }
+
+  // Return the target transform if animator is running, or the current
+  // transform otherwise.
+  Transform GetTargetTransform() const;
 
   // The bounds, relative to the parent.
   void SetBounds(const gfx::Rect& bounds);
@@ -113,6 +114,10 @@ class COMPOSITOR_EXPORT Layer :
   float opacity() const { return opacity_; }
   void SetOpacity(float opacity);
 
+  // Return the target opacity if animator is running, or the current bounds
+  // otherwise.
+  float GetTargetOpacity() const;
+
   // Sets the visibility of the Layer. A Layer may be visible but not
   // drawn. This happens if any ancestor of a Layer is not visible.
   void SetVisible(bool visible);
@@ -240,22 +245,21 @@ class COMPOSITOR_EXPORT Layer :
   // should have valid alpha.
   bool has_valid_alpha_channel() const { return !layer_updated_externally_; }
 
-  // If the animation is running and has progressed, it is stopped and all
-  // properties that are animated (except |property|) are immediately set to
-  // their target value.
-  void StopAnimatingIfNecessary(
-      LayerAnimationManager::AnimationProperty property);
-
   // Following are invoked from the animation or if no animation exists to
   // update the values immediately.
   void SetBoundsImmediately(const gfx::Rect& bounds);
   void SetTransformImmediately(const ui::Transform& transform);
   void SetOpacityImmediately(float opacity);
 
-  // LayerAnimatorDelegate overrides:
-  virtual void SetBoundsFromAnimator(const gfx::Rect& bounds) OVERRIDE;
-  virtual void SetTransformFromAnimator(const Transform& transform) OVERRIDE;
-  virtual void SetOpacityFromAnimator(float opacity) OVERRIDE;
+  // Implementation of LayerAnimatorDelegate
+  virtual void SetBoundsFromAnimation(const gfx::Rect& bounds) OVERRIDE;
+  virtual void SetTransformFromAnimation(const Transform& transform) OVERRIDE;
+  virtual void SetOpacityFromAnimation(float opacity) OVERRIDE;
+  virtual void ScheduleDrawForAnimation() OVERRIDE;
+  virtual const gfx::Rect& GetBoundsForAnimation() const OVERRIDE;
+  virtual const Transform& GetTransformForAnimation() const OVERRIDE;
+  virtual float GetOpacityForAnimation() const OVERRIDE;
+  virtual void OnLayerAnimationEnded(LayerAnimationSequence* sequence) OVERRIDE;
 
 #if defined(USE_WEBKIT_COMPOSITOR)
   void CreateWebLayer();
@@ -293,7 +297,7 @@ class COMPOSITOR_EXPORT Layer :
 
   LayerDelegate* delegate_;
 
-  scoped_ptr<LayerAnimationManager> animator_;
+  scoped_ptr<LayerAnimator> animator_;
 
 #if defined(USE_WEBKIT_COMPOSITOR)
   WebKit::WebContentLayer web_layer_;