src/cc/layers/quad_sink.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_LAYERS_QUAD_SINK_H_
   6 #define CC_LAYERS_QUAD_SINK_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "cc/base/cc_export.h"
  10
  11 namespace gfx {
  12 class Rect;
  13 class Transform;
  14 }
  15
  16 namespace cc {
  17
  18 class DrawQuad;
  19 class LayerImpl;
  20 class RenderPass;
  21 class RenderSurfaceImpl;
  22 class SharedQuadState;
  23 template <typename LayerType>
  24 class OcclusionTracker;
  25
  26 class CC_EXPORT QuadSink {
  27  public:
  28   QuadSink(RenderPass* render_pass,
  29            const OcclusionTracker<LayerImpl>* occlusion_tracker);
  30   ~QuadSink() {}
  31
  32   // Call this to add a SharedQuadState before appending quads that refer to it.
  33   // Returns a pointer to the given SharedQuadState, that can be set on the
  34   // quads to append.
  35   virtual SharedQuadState* CreateSharedQuadState();
  36
  37   virtual gfx::Rect UnoccludedContentRect(const gfx::Rect& content_rect,
  38                                           const gfx::Transform& draw_transform);
  39
  40   virtual gfx::Rect UnoccludedContributingSurfaceContentRect(
  41       const gfx::Rect& content_rect,
  42       const gfx::Transform& draw_transform);
  43
  44   virtual void Append(scoped_ptr<DrawQuad> draw_quad);
  45
  46   const RenderPass* render_pass() const { return render_pass_; }
  47
  48  protected:
  49   RenderPass* render_pass_;
  50
  51   SharedQuadState* current_shared_quad_state_;
  52
  53  private:
  54   const OcclusionTracker<LayerImpl>* occlusion_tracker_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(QuadSink);
  57 };
  58
  59 }  // namespace cc
  60
  61 #endif  // CC_LAYERS_QUAD_SINK_H_