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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBigPicture_DEFINED
#define SkBigPicture_DEFINED
#include "SkOnce.h"
#include "SkPicture.h"
#include "SkRect.h"
#include "SkTemplates.h"
class SkBBoxHierarchy;
class SkMatrix;
class SkRecord;
// An implementation of SkPicture supporting an arbitrary number of drawing commands.
class SkBigPicture final : public SkPicture {
public:
// AccelData provides a base class for device-specific acceleration data.
class AccelData : public SkRefCnt { };
// An array of refcounted const SkPicture pointers.
class SnapshotArray : ::SkNoncopyable {
public:
SnapshotArray(const SkPicture* pics[], int count) : fPics(pics), fCount(count) {}
~SnapshotArray() { for (int i = 0; i < fCount; i++) { fPics[i]->unref(); } }
const SkPicture* const* begin() const { return fPics; }
int count() const { return fCount; }
private:
SkAutoTMalloc<const SkPicture*> fPics;
int fCount;
};
SkBigPicture(const SkRect& cull,
SkRecord*, // We take ownership of the caller's ref.
SnapshotArray*, // We take exclusive ownership.
SkBBoxHierarchy*, // We take ownership of the caller's ref.
AccelData*, // We take ownership of the caller's ref.
size_t approxBytesUsedBySubPictures);
// SkPicture overrides
void playback(SkCanvas*, AbortCallback*) const override;
SkRect cullRect() const override;
bool willPlayBackBitmaps() const override;
int approximateOpCount() const override;
size_t approximateBytesUsed() const override;
const SkBigPicture* asSkBigPicture() const override { return this; }
// Used by GrLayerHoister
void partialPlayback(SkCanvas*,
int start,
int stop,
const SkMatrix& initialCTM) const;
// Used by GrRecordReplaceDraw
const SkBBoxHierarchy* bbh() const { return fBBH; }
const SkRecord* record() const { return fRecord; }
const AccelData* accelData() const { return fAccelData; }
private:
struct Analysis {
void init(const SkRecord&);
bool suitableForGpuRasterization(const char** reason) const;
uint8_t fNumSlowPathsAndDashEffects;
bool fWillPlaybackBitmaps : 1;
};
int numSlowPaths() const override;
const Analysis& analysis() const;
int drawableCount() const;
SkPicture const* const* drawablePicts() const;
const SkRect fCullRect;
const size_t fApproxBytesUsedBySubPictures;
mutable SkOnce fAnalysisOnce;
mutable Analysis fAnalysis;
SkAutoTUnref<const SkRecord> fRecord;
SkAutoTDelete<const SnapshotArray> fDrawablePicts;
SkAutoTUnref<const SkBBoxHierarchy> fBBH;
SkAutoTUnref<const AccelData> fAccelData;
};
#endif//SkBigPicture_DEFINED
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