cc/quads/shared_quad_state.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_QUADS_SHARED_QUAD_STATE_H_
   6 #define CC_QUADS_SHARED_QUAD_STATE_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "cc/base/cc_export.h"
  10 #include "third_party/skia/include/core/SkXfermode.h"
  11 #include "ui/gfx/rect.h"
  12 #include "ui/gfx/transform.h"
  13
  14 namespace base {
  15 class Value;
  16 }
  17
  18 namespace cc {
  19
  20 // SharedQuadState holds a set of properties that are common across multiple
  21 // DrawQuads. It's purely an optimization - the properties behave in exactly the
  22 // same way as if they were replicated on each DrawQuad. A given SharedQuadState
  23 // can only be shared by DrawQuads that are adjacent in their RenderPass'
  24 // QuadList.
  25 class CC_EXPORT SharedQuadState {
  26  public:
  27   static scoped_ptr<SharedQuadState> Create();
  28   ~SharedQuadState();
  29
  30   scoped_ptr<SharedQuadState> Copy() const;
  31
  32   void SetAll(const gfx::Transform& content_to_target_transform,
  33               const gfx::Size& content_bounds,
  34               const gfx::Rect& visible_content_rect,
  35               const gfx::Rect& clip_rect,
  36               bool is_clipped,
  37               float opacity,
  38               SkXfermode::Mode blend_mode);
  39   scoped_ptr<base::Value> AsValue() const;
  40
  41   // Transforms from quad's original content space to its target content space.
  42   gfx::Transform content_to_target_transform;
  43   // This size lives in the content space for the quad's originating layer.
  44   gfx::Size content_bounds;
  45   // This rect lives in the content space for the quad's originating layer.
  46   gfx::Rect visible_content_rect;
  47   // This rect lives in the target content space.
  48   gfx::Rect clip_rect;
  49   bool is_clipped;
  50   float opacity;
  51   SkXfermode::Mode blend_mode;
  52
  53  private:
  54   SharedQuadState();
  55 };
  56
  57 }  // namespace cc
  58
  59 #endif  // CC_QUADS_SHARED_QUAD_STATE_H_