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      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 namespace debug {
     16 class TracedValue;
     17 }
     18 class Value;
     19 }
     20 
     21 namespace cc {
     22 
     23 // SharedQuadState holds a set of properties that are common across multiple
     24 // DrawQuads. It's purely an optimization - the properties behave in exactly the
     25 // same way as if they were replicated on each DrawQuad. A given SharedQuadState
     26 // can only be shared by DrawQuads that are adjacent in their RenderPass'
     27 // QuadList.
     28 class CC_EXPORT SharedQuadState {
     29  public:
     30   SharedQuadState();
     31   ~SharedQuadState();
     32 
     33   void CopyFrom(const SharedQuadState* other);
     34 
     35   void SetAll(const gfx::Transform& content_to_target_transform,
     36               const gfx::Size& content_bounds,
     37               const gfx::Rect& visible_content_rect,
     38               const gfx::Rect& clip_rect,
     39               bool is_clipped,
     40               float opacity,
     41               SkXfermode::Mode blend_mode,
     42               int sorting_context_id);
     43   void AsValueInto(base::debug::TracedValue* dict) const;
     44 
     45   // Transforms from quad's original content space to its target content space.
     46   gfx::Transform content_to_target_transform;
     47   // This size lives in the content space for the quad's originating layer.
     48   gfx::Size content_bounds;
     49   // This rect lives in the content space for the quad's originating layer.
     50   gfx::Rect visible_content_rect;
     51   // This rect lives in the target content space.
     52   gfx::Rect clip_rect;
     53   bool is_clipped;
     54   float opacity;
     55   SkXfermode::Mode blend_mode;
     56   int sorting_context_id;
     57 };
     58 
     59 }  // namespace cc
     60 
     61 #endif  // CC_QUADS_SHARED_QUAD_STATE_H_
     62