cc/playback/clip_path_display_item.h

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_
#define CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_

#include <stddef.h>

#include "base/memory/scoped_ptr.h"
#include "cc/base/cc_export.h"
#include "cc/playback/display_item.h"
#include "third_party/skia/include/core/SkPath.h"
#include "third_party/skia/include/core/SkRegion.h"

class SkCanvas;

namespace cc {

class CC_EXPORT ClipPathDisplayItem : public DisplayItem {
 public:
  ClipPathDisplayItem(const SkPath& path, SkRegion::Op clip_op, bool antialias);
  explicit ClipPathDisplayItem(const proto::DisplayItem& proto);
  ~ClipPathDisplayItem() override;

  void ToProtobuf(proto::DisplayItem* proto) const override;
  void Raster(SkCanvas* canvas,
              const gfx::Rect& canvas_target_playback_rect,
              SkPicture::AbortCallback* callback) const override;
  void AsValueInto(const gfx::Rect& visual_rect,
                   base::trace_event::TracedValue* array) const override;
  size_t ExternalMemoryUsage() const override;

  int ApproximateOpCount() const { return 1; }
  bool IsSuitableForGpuRasterization() const { return true; }

 private:
  void SetNew(const SkPath& path, SkRegion::Op clip_op, bool antialias);

  SkPath clip_path_;
  SkRegion::Op clip_op_;
  bool antialias_;
};

class CC_EXPORT EndClipPathDisplayItem : public DisplayItem {
 public:
  EndClipPathDisplayItem();
  explicit EndClipPathDisplayItem(const proto::DisplayItem& proto);
  ~EndClipPathDisplayItem() override;

  static scoped_ptr<EndClipPathDisplayItem> Create() {
    return make_scoped_ptr(new EndClipPathDisplayItem());
  }

  void ToProtobuf(proto::DisplayItem* proto) const override;
  void Raster(SkCanvas* canvas,
              const gfx::Rect& canvas_target_playback_rect,
              SkPicture::AbortCallback* callback) const override;
  void AsValueInto(const gfx::Rect& visual_rect,
                   base::trace_event::TracedValue* array) const override;
  size_t ExternalMemoryUsage() const override;

  int ApproximateOpCount() const { return 0; }
  bool IsSuitableForGpuRasterization() const { return true; }
};

}  // namespace cc

#endif  // CC_PLAYBACK_CLIP_PATH_DISPLAY_ITEM_H_