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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_PILE_IMPL_H_
#define CC_RESOURCES_PICTURE_PILE_IMPL_H_
#include <list>
#include <map>
#include "cc/base/cc_export.h"
#include "cc/resources/picture_pile_base.h"
#include "skia/ext/analysis_canvas.h"
#include "skia/ext/refptr.h"
#include "third_party/skia/include/core/SkPicture.h"
namespace cc {
struct RenderingStats;
class CC_EXPORT PicturePileImpl : public PicturePileBase {
public:
static scoped_refptr<PicturePileImpl> Create(bool enable_lcd_text);
static scoped_refptr<PicturePileImpl> CreateFromOther(
const PicturePileBase* other,
bool enable_lcd_text);
// Get paint-safe version of this picture for a specific thread.
PicturePileImpl* GetCloneForDrawingOnThread(unsigned thread_index) const;
// Raster a subrect of this PicturePileImpl into the given canvas.
// It's only safe to call paint on a cloned version.
// It is assumed that contents_scale has already been applied to this canvas.
void Raster(
SkCanvas* canvas,
gfx::Rect canvas_rect,
float contents_scale,
int64* total_pixels_rasterized);
void GatherPixelRefs(
gfx::Rect content_rect,
float contents_scale,
std::list<skia::LazyPixelRef*>& pixel_refs);
skia::RefPtr<SkPicture> GetFlattenedPicture();
struct Analysis {
Analysis();
~Analysis();
bool is_solid_color;
bool is_transparent;
bool is_cheap_to_raster;
SkColor solid_color;
skia::AnalysisCanvas::LazyPixelRefList lazy_pixel_refs;
};
void AnalyzeInRect(const gfx::Rect& content_rect,
float contents_scale,
Analysis* analysis);
protected:
friend class PicturePile;
PicturePileImpl(bool enable_lcd_text);
PicturePileImpl(const PicturePileBase* other, bool enable_lcd_text);
virtual ~PicturePileImpl();
private:
class ClonesForDrawing {
public:
ClonesForDrawing(const PicturePileImpl* pile, int num_threads);
~ClonesForDrawing();
typedef std::vector<scoped_refptr<PicturePileImpl> > PicturePileVector;
PicturePileVector clones_;
};
static scoped_refptr<PicturePileImpl> CreateCloneForDrawing(
const PicturePileImpl* other, unsigned thread_index);
PicturePileImpl(const PicturePileImpl* other, unsigned thread_index);
bool enable_lcd_text_;
// Once instantiated, |clones_for_drawing_| can't be modified. This
// guarantees thread-safe access during the life time of a PicturePileImpl
// instance. This member variable must be last so that other member
// variables have already been initialized and can be clonable.
const ClonesForDrawing clones_for_drawing_;
DISALLOW_COPY_AND_ASSIGN(PicturePileImpl);
};
} // namespace cc
#endif // CC_RESOURCES_PICTURE_PILE_IMPL_H_
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