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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #ifndef SkFlattenableBuffers_DEFINED | 9 #ifndef SkFlattenableBuffers_DEFINED |
10 #define SkFlattenableBuffers_DEFINED | 10 #define SkFlattenableBuffers_DEFINED |
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34 SkFlattenableReadBuffer(); | 34 SkFlattenableReadBuffer(); |
35 virtual ~SkFlattenableReadBuffer(); | 35 virtual ~SkFlattenableReadBuffer(); |
36 | 36 |
37 bool isOrderedBinaryBuffer() { return NULL != getOrderedBinaryBuffer(); } | 37 bool isOrderedBinaryBuffer() { return NULL != getOrderedBinaryBuffer(); } |
38 virtual SkOrderedReadBuffer* getOrderedBinaryBuffer() { return NULL; } | 38 virtual SkOrderedReadBuffer* getOrderedBinaryBuffer() { return NULL; } |
39 | 39 |
40 enum Flags { | 40 enum Flags { |
41 kCrossProcess_Flag = 1 << 0, | 41 kCrossProcess_Flag = 1 << 0, |
42 kScalarIsFloat_Flag = 1 << 1, | 42 kScalarIsFloat_Flag = 1 << 1, |
43 kPtrIs64Bit_Flag = 1 << 2, | 43 kPtrIs64Bit_Flag = 1 << 2, |
44 /** The kValidation_Flag is used to force stream validations (by making | |
45 * sure that no operation reads past the end of the stream, for example) | |
46 * and error handling if any reading operation yields an invalid value. | |
47 */ | |
48 kValidation_Flag = 1 << 3, | |
44 }; | 49 }; |
45 | 50 |
46 void setFlags(uint32_t flags) { fFlags = flags; } | 51 void setFlags(uint32_t flags) { fFlags = flags; } |
47 uint32_t getFlags() const { return fFlags; } | 52 uint32_t getFlags() const { return fFlags; } |
48 | 53 |
49 bool isCrossProcess() const { return SkToBool(fFlags & kCrossProcess_Flag); } | 54 bool isCrossProcess() const { return SkToBool(fFlags & (kCrossProcess_Flag | kValidation_Flag)); } |
50 bool isScalarFloat() const { return SkToBool(fFlags & kScalarIsFloat_Flag); } | 55 bool isScalarFloat() const { return SkToBool(fFlags & kScalarIsFloat_Flag); } |
51 bool isPtr64Bit() const { return SkToBool(fFlags & kPtrIs64Bit_Flag); } | 56 bool isPtr64Bit() const { return SkToBool(fFlags & kPtrIs64Bit_Flag); } |
57 bool isSecure() const { return SkToBool(fFlags & kValidation_Flag); } | |
reed1
2013/09/04 18:49:36
isValidating()?
sugoi1
2013/09/04 20:14:52
Done.
| |
52 | 58 |
53 // primitives | 59 // primitives |
54 virtual bool readBool() = 0; | 60 virtual bool readBool() = 0; |
55 virtual SkColor readColor() = 0; | 61 virtual SkColor readColor() = 0; |
56 virtual SkFixed readFixed() = 0; | 62 virtual SkFixed readFixed() = 0; |
57 virtual int32_t readInt() = 0; | 63 virtual int32_t readInt() = 0; |
58 virtual SkScalar readScalar() = 0; | 64 virtual SkScalar readScalar() = 0; |
59 virtual uint32_t readUInt() = 0; | 65 virtual uint32_t readUInt() = 0; |
60 virtual int32_t read32() = 0; | 66 virtual int32_t read32() = 0; |
61 | 67 |
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95 SkPoint readPoint() { | 101 SkPoint readPoint() { |
96 SkPoint point; | 102 SkPoint point; |
97 this->readPoint(&point); | 103 this->readPoint(&point); |
98 return point; | 104 return point; |
99 } | 105 } |
100 | 106 |
101 template <typename T> T* readFlattenableT() { | 107 template <typename T> T* readFlattenableT() { |
102 return static_cast<T*>(this->readFlattenable()); | 108 return static_cast<T*>(this->readFlattenable()); |
103 } | 109 } |
104 | 110 |
111 void validateData(bool isValid) { | |
112 fError |= !isValid; | |
113 } | |
114 | |
115 protected: | |
116 bool fError; | |
117 | |
105 private: | 118 private: |
106 uint32_t fFlags; | 119 uint32_t fFlags; |
107 }; | 120 }; |
108 | 121 |
109 /////////////////////////////////////////////////////////////////////////////// | 122 /////////////////////////////////////////////////////////////////////////////// |
110 | 123 |
111 class SkFlattenableWriteBuffer { | 124 class SkFlattenableWriteBuffer { |
112 public: | 125 public: |
113 SkFlattenableWriteBuffer(); | 126 SkFlattenableWriteBuffer(); |
114 virtual ~SkFlattenableWriteBuffer(); | 127 virtual ~SkFlattenableWriteBuffer(); |
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147 virtual void writeFunctionPtr(void* ptr); | 160 virtual void writeFunctionPtr(void* ptr); |
148 virtual void writePaint(const SkPaint& paint); | 161 virtual void writePaint(const SkPaint& paint); |
149 | 162 |
150 virtual void writeBitmap(const SkBitmap& bitmap) = 0; | 163 virtual void writeBitmap(const SkBitmap& bitmap) = 0; |
151 virtual void writeTypeface(SkTypeface* typeface) = 0; | 164 virtual void writeTypeface(SkTypeface* typeface) = 0; |
152 | 165 |
153 virtual bool writeToStream(SkWStream*) = 0; | 166 virtual bool writeToStream(SkWStream*) = 0; |
154 | 167 |
155 enum Flags { | 168 enum Flags { |
156 kCrossProcess_Flag = 0x01, | 169 kCrossProcess_Flag = 0x01, |
170 /** The kValidation_Flag is used here to make sure the write operation | |
171 * is symmetric with the read operation using the equivalent flag | |
172 * SkFlattenableReadBuffer::kValidation_Flag. | |
173 */ | |
174 kValidation_Flag = 0x02, | |
157 }; | 175 }; |
158 | 176 |
159 uint32_t getFlags() const { return fFlags; } | 177 uint32_t getFlags() const { return fFlags; } |
160 void setFlags(uint32_t flags) { fFlags = flags; } | 178 void setFlags(uint32_t flags) { fFlags = flags; } |
161 | 179 |
162 bool isCrossProcess() const { | 180 bool isCrossProcess() const { |
163 return SkToBool(fFlags & kCrossProcess_Flag); | 181 return SkToBool(fFlags & (kCrossProcess_Flag | kValidation_Flag)); |
182 } | |
183 | |
184 bool isSecure() const { | |
reed1
2013/09/04 18:49:36
isValidating()?
sugoi1
2013/09/04 20:14:52
Done.
| |
185 return SkToBool(fFlags & kValidation_Flag); | |
164 } | 186 } |
165 | 187 |
166 bool persistTypeface() const { return (fFlags & kCrossProcess_Flag) != 0; } | 188 bool persistTypeface() const { return (fFlags & kCrossProcess_Flag) != 0; } |
167 | 189 |
168 protected: | 190 protected: |
169 // A helper function so that each subclass does not have to be a friend of S kFlattenable | 191 // A helper function so that each subclass does not have to be a friend of S kFlattenable |
170 void flattenObject(SkFlattenable* obj, SkFlattenableWriteBuffer& buffer); | 192 void flattenObject(SkFlattenable* obj, SkFlattenableWriteBuffer& buffer); |
171 | 193 |
172 uint32_t fFlags; | 194 uint32_t fFlags; |
173 }; | 195 }; |
174 | 196 |
175 #endif | 197 #endif |
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