CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/trees/layer_tree_mutators_client.h

+// 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_TREES_LAYER_TREE_MUTATORS_CLIENT_H_
+#define CC_TREES_LAYER_TREE_MUTATORS_CLIENT_H_
+
+namespace gfx {
+class Transform;
+class ScrollOffset;
+}
+
+namespace cc {
+
+class FilterOperations;
+class Layer;
+
+class LayerTreeMutatorsClient {

[Ian Vollick, 2015/05/05 03:52:07]

In future, we'll have a transform/opacity/filter/scroll mutator clients for each
of the property trees?

[loyso (OOO), 2015/05/05 06:51:19]

Sure. We can divide this interface and conquer. These flows are lose-coupled.

+ public:
+  virtual bool IsLayerInActiveTree(int layer_id) const = 0;
+  virtual bool IsLayerInPendingTree(int layer_id) const = 0;
+  virtual void SetMutatorsNeedCommit() = 0;
+
+  virtual void SetLayerFilterMutated(int layer_id,
+                                     bool active_tree,
+                                     const FilterOperations& filters) = 0;
+  virtual void SetLayerOpacityMutated(int layer_id,
+                                      bool active_tree,
+                                      float opacity) = 0;
+  virtual void SetLayerTransformMutated(int layer_id,
+                                        bool active_tree,
+                                        const gfx::Transform& transform) = 0;
+  virtual void SetLayerScrollOffsetMutated(
+      int layer_id,
+      bool active_tree,
+      const gfx::ScrollOffset& scroll_offset) = 0;
+};
+
+}  // namespace cc
+
+#endif  // CC_TREES_LAYER_TREE_MUTATORS_CLIENT_H_