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// Copyright 2012 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_RESOURCES_PICTURE_H_
#define CC_RESOURCES_PICTURE_H_
#include <list>
#include <vector>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "cc/base/cc_export.h"
#include "skia/ext/lazy_pixel_ref.h"
#include "skia/ext/refptr.h"
#include "third_party/skia/include/core/SkPixelRef.h"
#include "third_party/skia/include/core/SkTileGridPicture.h"
#include "ui/gfx/rect.h"
namespace skia {
class AnalysisCanvas;
}
namespace cc {
class ContentLayerClient;
struct RenderingStats;
class CC_EXPORT Picture
: public base::RefCountedThreadSafe<Picture> {
public:
static scoped_refptr<Picture> Create(gfx::Rect layer_rect);
const gfx::Rect& LayerRect() const { return layer_rect_; }
const gfx::Rect& OpaqueRect() const { return opaque_rect_; }
// Get thread-safe clone for rasterizing with on a specific thread.
scoped_refptr<Picture> GetCloneForDrawingOnThread(
unsigned thread_index) const;
// Make thread-safe clones for rasterizing with.
void CloneForDrawing(int num_threads);
// Record a paint operation. To be able to safely use this SkPicture for
// playback on a different thread this can only be called once.
void Record(ContentLayerClient*, RenderingStats*,
const SkTileGridPicture::TileGridInfo& tile_grid_info);
// Has Record() been called yet?
bool HasRecording() const { return picture_.get() != NULL; }
// Apply this contents scale and raster the content rect into the canvas.
void Raster(SkCanvas* canvas,
gfx::Rect content_rect,
float contents_scale,
bool enable_lcd_text);
void GatherPixelRefs(
const gfx::Rect& layer_rect,
std::list<skia::LazyPixelRef*>& pixel_ref_list);
private:
Picture(gfx::Rect layer_rect);
// This constructor assumes SkPicture is already ref'd and transfers
// ownership to this picture.
Picture(const skia::RefPtr<SkPicture>&,
gfx::Rect layer_rect,
gfx::Rect opaque_rect);
~Picture();
gfx::Rect layer_rect_;
gfx::Rect opaque_rect_;
skia::RefPtr<SkPicture> picture_;
typedef std::vector<scoped_refptr<Picture> > PictureVector;
PictureVector clones_;
friend class base::RefCountedThreadSafe<Picture>;
DISALLOW_COPY_AND_ASSIGN(Picture);
};
} // namespace cc
#endif // CC_RESOURCES_PICTURE_H_
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