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/geometry/rect.h"
  12 #include "ui/gfx/transform.h"
  13
  14 namespace base {
  15 namespace trace_event {
  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& quad_to_target_transform,
  36               const gfx::Size& layer_bounds,
  37               const gfx::Rect& visible_layer_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::trace_event::TracedValue* dict) const;
  44
  45   // Transforms quad rects into the target content space.
  46   gfx::Transform quad_to_target_transform;
  47   // The size of the quads' originating layer in the space of the quad rects.
  48   gfx::Size quad_layer_bounds;
  49   // The size of the visible area in the quads' originating layer, in the space
  50   // of the quad rects.
  51   gfx::Rect visible_quad_layer_rect;
  52   // This rect lives in the target content space.
  53   gfx::Rect clip_rect;
  54   bool is_clipped;
  55   float opacity;
  56   SkXfermode::Mode blend_mode;
  57   int sorting_context_id;
  58 };
  59
  60 }  // namespace cc
  61
  62 #endif  // CC_QUADS_SHARED_QUAD_STATE_H_