Mozart: Compute hits using 4x4 matrix.

services/gfx/compositor/graph/node_def.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 SERVICES_GFX_COMPOSITOR_GRAPH_NODE_DEF_H_
 #define SERVICES_GFX_COMPOSITOR_GRAPH_NODE_DEF_H_
 
 #include <iosfwd>
+#include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "mojo/services/gfx/composition/interfaces/nodes.mojom.h"
 #include "services/gfx/compositor/graph/snapshot.h"
 
 class SkCanvas;
 struct SkPoint;
-class SkMatrix;
+class SkMatrix44;
 
 namespace compositor {
 
 class SceneContent;
 class SceneContentBuilder;
 class SceneDef;
+class TransformPair;
 
 // Represents a scene graph node.
 //
 // The base class mainly acts as a container for other nodes and does not
 // draw any content of its own.
 //
 // Instances of this class are immutable and reference counted so they may
 // be shared by multiple versions of the same scene.
 class NodeDef : public base::RefCounted<NodeDef> {
  public:
   using Combinator = mojo::gfx::composition::Node::Combinator;
 
   NodeDef(uint32_t node_id,
-          mojo::TransformPtr content_transform,
+          std::unique_ptr<TransformPair> content_transform,
           mojo::RectFPtr content_clip,
           mojo::gfx::composition::HitTestBehaviorPtr hit_test_behavior,
           Combinator combinator,
           const std::vector<uint32_t>& child_node_ids);
 
   uint32_t node_id() const { return node_id_; }
-  const mojo::Transform* content_transform() const {
+  const TransformPair* content_transform() const {
     return content_transform_.get();
   }
   const mojo::gfx::composition::HitTestBehavior* hit_test_behavior() const {
     return hit_test_behavior_.get();
   }
   const mojo::RectF* content_clip() const { return content_clip_.get(); }
   Combinator combinator() const { return combinator_; }
   const std::vector<uint32_t>& child_node_ids() const {
     return child_node_ids_;
   }
@@ skipping 20 matching lines @@
 
   // Performs a hit test at the specified point.
   // The |point| is the hit tested point in the parent's coordinate space.
   // The |global_to_parent_transform| is the accumulated transform from the
   // global coordinate space to the parent's coordinate space.
   // Adds hit information for the node to |hits|.
   // Returns true if the search was terminated by an opaque hit.
   bool HitTest(const SceneContent* content,
                const Snapshot* snapshot,
                const SkPoint& parent_point,
-               const SkMatrix& global_to_parent_transform,
+               const SkMatrix44& global_to_parent_transform,
                mojo::Array<mojo::gfx::composition::HitPtr>* hits) const;
 
  protected:
   friend class base::RefCounted<NodeDef>;
   virtual ~NodeDef();
 
   // Applies a unary function to the children selected by the node's
   // combinator rule during a snapshot.
   // Stops when |Func| returns false.
   // |Func| should have the signature |bool func(const NodeDef*)|.
   template <typename Func>
   void TraverseSnapshottedChildren(const SceneContent* content,
                                    const Snapshot* snapshot,
                                    const Func& func) const;
 
   virtual void RecordPictureInner(const SceneContent* content,
                                   const Snapshot* snapshot,
                                   SkCanvas* canvas) const;
 
   virtual bool HitTestInner(
       const SceneContent* content,
       const Snapshot* snapshot,
       const SkPoint& local_point,
-      const SkMatrix& global_to_local_transform,
+      const SkMatrix44& global_to_local_transform,
       mojo::Array<mojo::gfx::composition::HitPtr>* hits) const;
 
  private:
   bool HitTestSelf(const SceneContent* content,
                    const Snapshot* snapshot,
                    const SkPoint& local_point,
-                   const SkMatrix& global_to_local_transform,
+                   const SkMatrix44& global_to_local_transform,
                    mojo::Array<mojo::gfx::composition::HitPtr>* hits) const;
 
   uint32_t const node_id_;
-  mojo::TransformPtr const content_transform_;
+  std::unique_ptr<TransformPair> const content_transform_;
   mojo::RectFPtr const content_clip_;
   mojo::gfx::composition::HitTestBehaviorPtr const hit_test_behavior_;
   Combinator const combinator_;
   std::vector<uint32_t> const child_node_ids_;
 
   DISALLOW_COPY_AND_ASSIGN(NodeDef);
 };
 
 // Represents a rectangle node.
 //
 // Draws a solid color filled rectangle node underneath its children.
 class RectNodeDef : public NodeDef {
  public:
   RectNodeDef(uint32_t node_id,
-              mojo::TransformPtr content_transform,
+              std::unique_ptr<TransformPair> content_transform,
               mojo::RectFPtr content_clip,
               mojo::gfx::composition::HitTestBehaviorPtr hit_test_behavior,
               Combinator combinator,
               const std::vector<uint32_t>& child_node_ids,
               const mojo::RectF& content_rect,
               const mojo::gfx::composition::Color& color);
 
   const mojo::RectF& content_rect() const { return content_rect_; }
   const mojo::gfx::composition::Color& color() const { return color_; }
 
@@ skipping 10 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(RectNodeDef);
 };
 
 // Represents an image node.
 //
 // Draws an image filled rectangle underneath its children.
 class ImageNodeDef : public NodeDef {
  public:
   ImageNodeDef(uint32_t node_id,
-               mojo::TransformPtr content_transform,
+               std::unique_ptr<TransformPair> content_transform,
                mojo::RectFPtr content_clip,
                mojo::gfx::composition::HitTestBehaviorPtr hit_test_behavior,
                Combinator combinator,
                const std::vector<uint32_t>& child_node_ids,
                const mojo::RectF& content_rect,
                mojo::RectFPtr image_rect,
                uint32 image_resource_id,
                mojo::gfx::composition::BlendPtr blend);
 
   const mojo::RectF& content_rect() const { return content_rect_; }
@@ skipping 18 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(ImageNodeDef);
 };
 
 // Represents a scene node.
 //
 // Draws an embedded scene underneath its children.
 class SceneNodeDef : public NodeDef {
  public:
   SceneNodeDef(uint32_t node_id,
-               mojo::TransformPtr content_transform,
+               std::unique_ptr<TransformPair> content_transform,
                mojo::RectFPtr content_clip,
                mojo::gfx::composition::HitTestBehaviorPtr hit_test_behavior,
                Combinator combinator,
                const std::vector<uint32_t>& child_node_ids,
                uint32_t scene_resource_id,
                uint32_t scene_version);
 
   uint32_t scene_resource_id() const { return scene_resource_id_; }
   uint32_t scene_version() const { return scene_version_; }
 
   bool RecordContent(SceneContentBuilder* builder) const override;
 
   Snapshot::Disposition RecordSnapshot(const SceneContent* content,
                                        SnapshotBuilder* builder) const override;
 
  protected:
   ~SceneNodeDef() override;
 
   void RecordPictureInner(const SceneContent* content,
                           const Snapshot* snapshot,
                           SkCanvas* canvas) const override;
 
   bool HitTestInner(
       const SceneContent* content,
       const Snapshot* snapshot,
       const SkPoint& local_point,
-      const SkMatrix& global_to_local_transform,
+      const SkMatrix44& global_to_local_transform,
       mojo::Array<mojo::gfx::composition::HitPtr>* hits) const override;
 
  private:
   uint32_t const scene_resource_id_;
   uint32_t const scene_version_;
 
   DISALLOW_COPY_AND_ASSIGN(SceneNodeDef);
 };
 
 // Represents a layer node.
 //
 // Composites its children to a layer and applies a blending operation.
 class LayerNodeDef : public NodeDef {
  public:
   LayerNodeDef(uint32_t node_id,
-               mojo::TransformPtr content_transform,
+               std::unique_ptr<TransformPair> content_transform,
                mojo::RectFPtr content_clip,
                mojo::gfx::composition::HitTestBehaviorPtr hit_test_behavior,
                Combinator combinator,
                const std::vector<uint32_t>& child_node_ids,
                const mojo::RectF& layer_rect,
                mojo::gfx::composition::BlendPtr blend);
 
   const mojo::RectF& layer_rect() const { return layer_rect_; }
   const mojo::gfx::composition::Blend* blend() const { return blend_.get(); }
 
  protected:
   ~LayerNodeDef() override;
 
   void RecordPictureInner(const SceneContent* content,
                           const Snapshot* snapshot,
                           SkCanvas* canvas) const override;
 
  private:
   mojo::RectF const layer_rect_;
   mojo::gfx::composition::BlendPtr const blend_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerNodeDef);
 };
 
 }  // namespace compositor
 
 #endif  // SERVICES_GFX_COMPOSITOR_GRAPH_NODE_DEF_H_