cc/resources/compositing_display_item.h

   1 // Copyright 2015 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_RESOURCES_COMPOSITING_DISPLAY_ITEM_H_
   6 #define CC_RESOURCES_COMPOSITING_DISPLAY_ITEM_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "cc/base/cc_export.h"
  10 #include "cc/resources/display_item.h"
  11 #include "skia/ext/refptr.h"
  12 #include "third_party/skia/include/core/SkColorFilter.h"
  13 #include "third_party/skia/include/core/SkRect.h"
  14 #include "third_party/skia/include/core/SkXfermode.h"
  15 #include "ui/gfx/geometry/rect_f.h"
  16
  17 class SkCanvas;
  18 class SkDrawPictureCallback;
  19
  20 namespace cc {
  21
  22 class CC_EXPORT CompositingDisplayItem : public DisplayItem {
  23  public:
  24   ~CompositingDisplayItem() override;
  25
  26   static scoped_ptr<CompositingDisplayItem> Create(
  27       uint8_t alpha,
  28       SkXfermode::Mode xfermode,
  29       SkRect* bounds,
  30       skia::RefPtr<SkColorFilter> color_filter) {
  31     return make_scoped_ptr(
  32         new CompositingDisplayItem(alpha, xfermode, bounds, color_filter));
  33   }
  34
  35   void Raster(SkCanvas* canvas, SkDrawPictureCallback* callback) const override;
  36
  37   bool IsSuitableForGpuRasterization() const override;
  38   int ApproximateOpCount() const override;
  39   size_t PictureMemoryUsage() const override;
  40   void AsValueInto(base::trace_event::TracedValue* array) const override;
  41
  42  protected:
  43   CompositingDisplayItem(uint8_t alpha,
  44                          SkXfermode::Mode,
  45                          SkRect* bounds,
  46                          skia::RefPtr<SkColorFilter>);
  47
  48  private:
  49   uint8_t alpha_;
  50   SkXfermode::Mode xfermode_;
  51   bool has_bounds_;
  52   SkRect bounds_;
  53   skia::RefPtr<SkColorFilter> color_filter_;
  54 };
  55
  56 class CC_EXPORT EndCompositingDisplayItem : public DisplayItem {
  57  public:
  58   ~EndCompositingDisplayItem() override;
  59
  60   static scoped_ptr<EndCompositingDisplayItem> Create() {
  61     return make_scoped_ptr(new EndCompositingDisplayItem());
  62   }
  63
  64   void Raster(SkCanvas* canvas, SkDrawPictureCallback* callback) const override;
  65
  66   bool IsSuitableForGpuRasterization() const override;
  67   int ApproximateOpCount() const override;
  68   size_t PictureMemoryUsage() const override;
  69   void AsValueInto(base::trace_event::TracedValue* array) const override;
  70
  71  protected:
  72   EndCompositingDisplayItem();
  73 };
  74
  75 }  // namespace cc
  76
  77 #endif  // CC_RESOURCES_COMPOSITING_DISPLAY_ITEM_H_