| |
| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkFlattenableBuffers_DEFINED |
| #define SkFlattenableBuffers_DEFINED |
| |
| #include "SkColor.h" |
| #include "SkPaint.h" |
| #include "SkPoint.h" |
| |
| class SkBitmap; |
| class SkFlattenable; |
| struct SkIRect; |
| class SkMatrix; |
| class SkOrderedReadBuffer; |
| class SkOrderedWriteBuffer; |
| class SkPath; |
| class SkPixelRef; |
| struct SkRect; |
| class SkRefCnt; |
| class SkRegion; |
| class SkStream; |
| class SkString; |
| class SkTypeface; |
| class SkWStream; |
| |
| class SkFlattenableReadBuffer { |
| public: |
| SkFlattenableReadBuffer(); |
| virtual ~SkFlattenableReadBuffer(); |
| |
| bool isOrderedBinaryBuffer() { return NULL != getOrderedBinaryBuffer(); } |
| virtual SkOrderedReadBuffer* getOrderedBinaryBuffer() { return NULL; } |
| |
| enum Flags { |
| kCrossProcess_Flag = 1 << 0, |
| kScalarIsFloat_Flag = 1 << 1, |
| kPtrIs64Bit_Flag = 1 << 2, |
| }; |
| |
| void setFlags(uint32_t flags) { fFlags = flags; } |
| uint32_t getFlags() const { return fFlags; } |
| |
| bool isCrossProcess() const { return SkToBool(fFlags & kCrossProcess_Flag); } |
| bool isScalarFloat() const { return SkToBool(fFlags & kScalarIsFloat_Flag); } |
| bool isPtr64Bit() const { return SkToBool(fFlags & kPtrIs64Bit_Flag); } |
| |
| // primitives |
| virtual bool readBool() = 0; |
| virtual SkColor readColor() = 0; |
| virtual SkFixed readFixed() = 0; |
| virtual int32_t readInt() = 0; |
| virtual SkScalar readScalar() = 0; |
| virtual uint32_t readUInt() = 0; |
| virtual int32_t read32() = 0; |
| |
| // strings -- the caller is responsible for freeing the string contents |
| virtual char* readString() = 0; |
| virtual void* readEncodedString(size_t* length, SkPaint::TextEncoding encoding) = 0; |
| |
| // common data structures |
| virtual SkFlattenable* readFlattenable() = 0; |
| virtual void readPoint(SkPoint* point) = 0; |
| virtual void readMatrix(SkMatrix* matrix) = 0; |
| virtual void readIRect(SkIRect* rect) = 0; |
| virtual void readRect(SkRect* rect) = 0; |
| virtual void readRegion(SkRegion* region) = 0; |
| virtual void readPath(SkPath* path) = 0; |
| |
| // binary data and arrays |
| virtual uint32_t readByteArray(void* value) = 0; |
| virtual uint32_t readColorArray(SkColor* colors) = 0; |
| virtual uint32_t readIntArray(int32_t* values) = 0; |
| virtual uint32_t readPointArray(SkPoint* points) = 0; |
| virtual uint32_t readScalarArray(SkScalar* values) = 0; |
| |
| /** This helper peeks into the buffer and reports back the length of the next array in |
| * the buffer but does not change the state of the buffer. |
| */ |
| virtual uint32_t getArrayCount() = 0; |
| |
| // helper functions |
| virtual void* readFunctionPtr(); |
| virtual void readPaint(SkPaint* paint); |
| |
| virtual void readBitmap(SkBitmap* bitmap) = 0; |
| virtual SkTypeface* readTypeface() = 0; |
| |
| // helper function for classes with const SkPoint members |
| SkPoint readPoint() { |
| SkPoint point; |
| this->readPoint(&point); |
| return point; |
| } |
| |
| template <typename T> T* readFlattenableT() { |
| return static_cast<T*>(this->readFlattenable()); |
| } |
| |
| private: |
| uint32_t fFlags; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class SkFlattenableWriteBuffer { |
| public: |
| SkFlattenableWriteBuffer(); |
| virtual ~SkFlattenableWriteBuffer(); |
| |
| virtual bool isOrderedBinaryBuffer() { return false; } |
| virtual SkOrderedWriteBuffer* getOrderedBinaryBuffer() { sk_throw(); return NULL; } |
| |
| // primitives |
| virtual void writeByteArray(const void* data, size_t size) = 0; |
| virtual void writeBool(bool value) = 0; |
| virtual void writeFixed(SkFixed value) = 0; |
| virtual void writeScalar(SkScalar value) = 0; |
| virtual void writeScalarArray(const SkScalar* value, uint32_t count) = 0; |
| virtual void writeInt(int32_t value) = 0; |
| virtual void writeIntArray(const int32_t* value, uint32_t count) = 0; |
| virtual void writeUInt(uint32_t value) = 0; |
| virtual void write32(int32_t value) = 0; // printf in hex |
| virtual void writeString(const char* value) = 0; |
| virtual void writeEncodedString(const void* value, size_t byteLength, |
| SkPaint::TextEncoding encoding) = 0; |
| |
| // common data structures |
| virtual void writeFlattenable(SkFlattenable* flattenable) = 0; |
| virtual void writeColor(const SkColor& color) = 0; |
| virtual void writeColorArray(const SkColor* color, uint32_t count) = 0; |
| virtual void writePoint(const SkPoint& point) = 0; |
| virtual void writePointArray(const SkPoint* points, uint32_t count) = 0; |
| virtual void writeMatrix(const SkMatrix& matrix) = 0; |
| virtual void writeIRect(const SkIRect& rect) = 0; |
| virtual void writeRect(const SkRect& rect) = 0; |
| virtual void writeRegion(const SkRegion& region) = 0; |
| virtual void writePath(const SkPath& path) = 0; |
| virtual size_t writeStream(SkStream* stream, size_t length) = 0; |
| |
| // helper functions |
| virtual void writeFunctionPtr(void* ptr); |
| virtual void writePaint(const SkPaint& paint); |
| |
| virtual void writeBitmap(const SkBitmap& bitmap) = 0; |
| virtual void writeTypeface(SkTypeface* typeface) = 0; |
| |
| virtual bool writeToStream(SkWStream*) = 0; |
| |
| enum Flags { |
| kCrossProcess_Flag = 0x01, |
| /** |
| * Instructs the writer to inline Factory names as there are seen the |
| * first time (after that we store an index). The pipe code uses this. |
| */ |
| kInlineFactoryNames_Flag = 0x02, |
| /** |
| * Instructs the writer to always serialize bitmap pixel data. |
| */ |
| kForceFlattenBitmapPixels_Flag = 0x04, |
| }; |
| |
| uint32_t getFlags() const { return fFlags; } |
| void setFlags(uint32_t flags) { fFlags = flags; } |
| |
| bool isCrossProcess() const { |
| return SkToBool(fFlags & kCrossProcess_Flag); |
| } |
| bool inlineFactoryNames() const { |
| return SkToBool(fFlags & kInlineFactoryNames_Flag); |
| } |
| |
| bool persistBitmapPixels() const { |
| return (fFlags & (kCrossProcess_Flag | kForceFlattenBitmapPixels_Flag)) != 0; |
| } |
| |
| bool persistTypeface() const { return (fFlags & kCrossProcess_Flag) != 0; } |
| |
| protected: |
| // A helper function so that each subclass does not have to be a friend of SkFlattenable |
| void flattenObject(SkFlattenable* obj, SkFlattenableWriteBuffer& buffer); |
| |
| uint32_t fFlags; |
| }; |
| |
| #endif |