/* * Copyright 2011 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkPictureData_DEFINED #define SkPictureData_DEFINED #include "include/core/SkBitmap.h" #include "include/core/SkDrawable.h" #include "include/core/SkPicture.h" #include "include/private/SkTArray.h" #include "src/core/SkPictureFlat.h" #include class SkData; class SkPictureRecord; class SkReader32; struct SkSerialProcs; class SkStream; class SkWStream; class SkBBoxHierarchy; class SkMatrix; class SkPaint; class SkPath; class SkReadBuffer; class SkTextBlob; struct SkPictInfo { SkPictInfo() : fVersion(~0U) {} uint32_t getVersion() const { SkASSERT(fVersion != ~0U); return fVersion; } void setVersion(uint32_t version) { SkASSERT(version != ~0U); fVersion = version; } public: char fMagic[8]; private: uint32_t fVersion; public: SkRect fCullRect; }; #define SK_PICT_READER_TAG SkSetFourByteTag('r', 'e', 'a', 'd') #define SK_PICT_FACTORY_TAG SkSetFourByteTag('f', 'a', 'c', 't') #define SK_PICT_TYPEFACE_TAG SkSetFourByteTag('t', 'p', 'f', 'c') #define SK_PICT_PICTURE_TAG SkSetFourByteTag('p', 'c', 't', 'r') #define SK_PICT_DRAWABLE_TAG SkSetFourByteTag('d', 'r', 'a', 'w') // This tag specifies the size of the ReadBuffer, needed for the following tags #define SK_PICT_BUFFER_SIZE_TAG SkSetFourByteTag('a', 'r', 'a', 'y') // these are all inside the ARRAYS tag #define SK_PICT_PAINT_BUFFER_TAG SkSetFourByteTag('p', 'n', 't', ' ') #define SK_PICT_PATH_BUFFER_TAG SkSetFourByteTag('p', 't', 'h', ' ') #define SK_PICT_TEXTBLOB_BUFFER_TAG SkSetFourByteTag('b', 'l', 'o', 'b') #define SK_PICT_VERTICES_BUFFER_TAG SkSetFourByteTag('v', 'e', 'r', 't') #define SK_PICT_IMAGE_BUFFER_TAG SkSetFourByteTag('i', 'm', 'a', 'g') // Always write this guy last (with no length field afterwards) #define SK_PICT_EOF_TAG SkSetFourByteTag('e', 'o', 'f', ' ') template T* read_index_base_1_or_null(SkReadBuffer* reader, const SkTArray>& array) { int index = reader->readInt(); return reader->validate(index > 0 && index <= array.count()) ? array[index - 1].get() : nullptr; } class SkPictureData { public: SkPictureData(const SkPictureRecord& record, const SkPictInfo&); // Does not affect ownership of SkStream. static SkPictureData* CreateFromStream(SkStream*, const SkPictInfo&, const SkDeserialProcs&, SkTypefacePlayback*); static SkPictureData* CreateFromBuffer(SkReadBuffer&, const SkPictInfo&); void serialize(SkWStream*, const SkSerialProcs&, SkRefCntSet*, bool textBlobsOnly=false) const; void flatten(SkWriteBuffer&) const; const sk_sp& opData() const { return fOpData; } protected: explicit SkPictureData(const SkPictInfo& info); // Does not affect ownership of SkStream. bool parseStream(SkStream*, const SkDeserialProcs&, SkTypefacePlayback*); bool parseBuffer(SkReadBuffer& buffer); public: const SkImage* getImage(SkReadBuffer* reader) const { // images are written base-0, unlike paths, pictures, drawables, etc. const int index = reader->readInt(); return reader->validateIndex(index, fImages.count()) ? fImages[index].get() : nullptr; } const SkPath& getPath(SkReadBuffer* reader) const { int index = reader->readInt(); return reader->validate(index > 0 && index <= fPaths.count()) ? fPaths[index - 1] : fEmptyPath; } const SkPicture* getPicture(SkReadBuffer* reader) const { return read_index_base_1_or_null(reader, fPictures); } SkDrawable* getDrawable(SkReadBuffer* reader) const { return read_index_base_1_or_null(reader, fDrawables); } const SkPaint* getPaint(SkReadBuffer* reader) const { int index = reader->readInt(); if (index == 0) { return nullptr; // recorder wrote a zero for no paint (likely drawimage) } return reader->validate(index > 0 && index <= fPaints.count()) ? &fPaints[index - 1] : nullptr; } const SkTextBlob* getTextBlob(SkReadBuffer* reader) const { return read_index_base_1_or_null(reader, fTextBlobs); } const SkVertices* getVertices(SkReadBuffer* reader) const { return read_index_base_1_or_null(reader, fVertices); } private: // these help us with reading/writing // Does not affect ownership of SkStream. bool parseStreamTag(SkStream*, uint32_t tag, uint32_t size, const SkDeserialProcs&, SkTypefacePlayback*); void parseBufferTag(SkReadBuffer&, uint32_t tag, uint32_t size); void flattenToBuffer(SkWriteBuffer&, bool textBlobsOnly) const; SkTArray fPaints; SkTArray fPaths; sk_sp fOpData; // opcodes and parameters const SkPath fEmptyPath; const SkBitmap fEmptyBitmap; SkTArray> fPictures; SkTArray> fDrawables; SkTArray> fTextBlobs; SkTArray> fVertices; SkTArray> fImages; SkTypefacePlayback fTFPlayback; std::unique_ptr fFactoryPlayback; const SkPictInfo fInfo; static void WriteFactories(SkWStream* stream, const SkFactorySet& rec); static void WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec, const SkSerialProcs&); void initForPlayback() const; }; #endif