commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 1 | |
| 2 | /* |
| 3 | * Copyright 2011 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
| 9 | #ifndef SkWriteBuffer_DEFINED |
| 10 | #define SkWriteBuffer_DEFINED |
| 11 | |
| 12 | #include "SkBitmapHeap.h" |
| 13 | #include "SkData.h" |
| 14 | #include "SkPath.h" |
| 15 | #include "SkPicture.h" |
| 16 | #include "SkRefCnt.h" |
| 17 | #include "SkWriter32.h" |
| 18 | |
| 19 | class SkBitmap; |
| 20 | class SkFactorySet; |
| 21 | class SkFlattenable; |
| 22 | class SkNamedFactorySet; |
| 23 | class SkRefCntSet; |
| 24 | |
| 25 | class SkWriteBuffer { |
| 26 | public: |
| 27 | SkWriteBuffer(); |
| 28 | SkWriteBuffer(void* initialStorage, size_t storageSize); |
| 29 | ~SkWriteBuffer(); |
| 30 | |
| 31 | enum Flags { |
| 32 | kCrossProcess_Flag = 1 << 0, |
| 33 | kValidation_Flag = 1 << 1, |
| 34 | }; |
| 35 | void setFlags(uint32_t flags) { fFlags = flags; } |
| 36 | uint32_t getFlags() const { return fFlags; } |
| 37 | |
| 38 | bool isValidating() const { return SkToBool(fFlags & kValidation_Flag); } |
| 39 | bool isCrossProcess() const { |
| 40 | return this->isValidating() || SkToBool(fFlags & kCrossProcess_Flag); |
| 41 | } |
| 42 | |
| 43 | SkWriter32* getWriter32() { return &fWriter; } |
| 44 | void reset(void* storage = NULL, size_t storageSize = 0) { |
| 45 | fWriter.reset(storage, storageSize); |
| 46 | } |
| 47 | |
| 48 | uint32_t* reserve(size_t size) { return fWriter.reserve(size); } |
| 49 | |
| 50 | size_t bytesWritten() const { return fWriter.bytesWritten(); } |
| 51 | |
| 52 | void writeByteArray(const void* data, size_t size); |
| 53 | void writeDataAsByteArray(SkData* data) { this->writeByteArray(data->data(), data->size()); } |
| 54 | void writeBool(bool value); |
| 55 | void writeFixed(SkFixed value); |
| 56 | void writeScalar(SkScalar value); |
| 57 | void writeScalarArray(const SkScalar* value, uint32_t count); |
| 58 | void writeInt(int32_t value); |
| 59 | void writeIntArray(const int32_t* value, uint32_t count); |
| 60 | void writeUInt(uint32_t value); |
| 61 | void write32(int32_t value); |
| 62 | void writeString(const char* value); |
| 63 | void writeEncodedString(const void* value, size_t byteLength, SkPaint::TextEncoding encoding); |
| 64 | void writeFunctionPtr(void* ptr) { this->writeByteArray(&ptr, sizeof(ptr)); } |
| 65 | |
| 66 | void writeFlattenable(const SkFlattenable* flattenable); |
| 67 | void writeColor(const SkColor& color); |
| 68 | void writeColorArray(const SkColor* color, uint32_t count); |
| 69 | void writePoint(const SkPoint& point); |
| 70 | void writePointArray(const SkPoint* point, uint32_t count); |
| 71 | void writeMatrix(const SkMatrix& matrix); |
| 72 | void writeIRect(const SkIRect& rect); |
| 73 | void writeRect(const SkRect& rect); |
| 74 | void writeRegion(const SkRegion& region); |
| 75 | void writePath(const SkPath& path); |
| 76 | size_t writeStream(SkStream* stream, size_t length); |
| 77 | void writeBitmap(const SkBitmap& bitmap); |
| 78 | void writeTypeface(SkTypeface* typeface); |
| 79 | void writePaint(const SkPaint& paint) { paint.flatten(*this); } |
| 80 | |
| 81 | bool writeToStream(SkWStream*); |
| 82 | void writeToMemory(void* dst) { fWriter.flatten(dst); } |
| 83 | |
| 84 | SkFactorySet* setFactoryRecorder(SkFactorySet*); |
| 85 | SkNamedFactorySet* setNamedFactoryRecorder(SkNamedFactorySet*); |
| 86 | |
| 87 | SkRefCntSet* getTypefaceRecorder() const { return fTFSet; } |
| 88 | SkRefCntSet* setTypefaceRecorder(SkRefCntSet*); |
| 89 | |
| 90 | /** |
| 91 | * Set an SkBitmapHeap to store bitmaps rather than flattening. |
| 92 | * |
| 93 | * Incompatible with an EncodeBitmap function. If an EncodeBitmap function is set, setting an |
| 94 | * SkBitmapHeap will set the function to NULL in release mode and crash in debug. |
| 95 | */ |
| 96 | void setBitmapHeap(SkBitmapHeap*); |
| 97 | |
| 98 | /** |
| 99 | * Provide a function to encode an SkBitmap to an SkData. writeBitmap will attempt to use |
| 100 | * bitmapEncoder to store the SkBitmap. If the reader does not provide a function to decode, it |
| 101 | * will not be able to restore SkBitmaps, but will still be able to read the rest of the stream. |
| 102 | * bitmapEncoder will never be called with a NULL pixelRefOffset. |
| 103 | * |
| 104 | * Incompatible with the SkBitmapHeap. If an encoder is set fBitmapHeap will be set to NULL in |
| 105 | * release and crash in debug. |
| 106 | */ |
| 107 | void setBitmapEncoder(SkPicture::EncodeBitmap bitmapEncoder); |
| 108 | |
| 109 | private: |
| 110 | uint32_t fFlags; |
| 111 | SkFactorySet* fFactorySet; |
| 112 | SkNamedFactorySet* fNamedFactorySet; |
| 113 | SkWriter32 fWriter; |
| 114 | |
| 115 | SkBitmapHeap* fBitmapHeap; |
| 116 | SkRefCntSet* fTFSet; |
| 117 | |
| 118 | SkPicture::EncodeBitmap fBitmapEncoder; |
| 119 | }; |
| 120 | |
| 121 | #endif // SkWriteBuffer_DEFINED |