SkTextBlobTrace.h

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// Copyright 2019 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#ifndef SkTextBlobTrace_DEFINED
#define SkTextBlobTrace_DEFINED
 
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypes.h"
#include "src/core/SkWriteBuffer.h"
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
class SkFontMgr;
class SkRefCntSet;
class SkStream;
class SkWStream;
namespace sktext {
class GlyphRunList;
}
 
namespace SkTextBlobTrace {
 
struct Record {
    uint32_t origUniqueID;
    SkPaint paint;
    SkPoint offset;
    sk_sp<SkTextBlob> blob;
};
 
std::vector<SkTextBlobTrace::Record> CreateBlobTrace(SkStream* stream,
                                                     sk_sp<SkFontMgr> lastResortMgr);
 
void DumpTrace(const std::vector<SkTextBlobTrace::Record>&);
 
class Capture {
public:
    Capture();
    ~Capture();
    void capture(const sktext::GlyphRunList&, const SkPaint&);
    // If `dst` is nullptr, write to a file.
    void dump(SkWStream* dst = nullptr) const;
 
private:
    size_t fBlobCount = 0;
    sk_sp<SkRefCntSet> fTypefaceSet;
    SkBinaryWriteBuffer fWriteBuffer;
 
    Capture(const Capture&) = delete;
    Capture& operator=(const Capture&) = delete;
};
 
}  // namespace SkTextBlobTrace
#endif  // SkTextBlobTrace_DEFINED