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| 1 /* | |
| 2 * Copyright (C) 2010 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef SKY_ENGINE_CORE_HTML_CANVAS_DATAVIEW_H_ | |
| 27 #define SKY_ENGINE_CORE_HTML_CANVAS_DATAVIEW_H_ | |
| 28 | |
| 29 #include "sky/engine/tonic/dart_wrappable.h" | |
| 30 #include "sky/engine/wtf/ArrayBufferView.h" | |
| 31 #include "sky/engine/wtf/PassRefPtr.h" | |
| 32 | |
| 33 namespace blink { | |
| 34 | |
| 35 class ExceptionState; | |
| 36 | |
| 37 class DataView final : public ArrayBufferView { | |
| 38 public: | |
| 39 static PassRefPtr<DataView> create(unsigned length); | |
| 40 static PassRefPtr<DataView> create(PassRefPtr<ArrayBuffer>, unsigned byteOff
set, unsigned byteLength); | |
| 41 | |
| 42 virtual unsigned byteLength() const override { return m_byteLength; } | |
| 43 | |
| 44 int8_t getInt8(unsigned byteOffset, ExceptionState&); | |
| 45 uint8_t getUint8(unsigned byteOffset, ExceptionState&); | |
| 46 int16_t getInt16(unsigned byteOffset, ExceptionState& ec) { return getInt16(
byteOffset, false, ec); } | |
| 47 int16_t getInt16(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 48 uint16_t getUint16(unsigned byteOffset, ExceptionState& ec) { return getUint
16(byteOffset, false, ec); } | |
| 49 uint16_t getUint16(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 50 int32_t getInt32(unsigned byteOffset, ExceptionState& ec) { return getInt32(
byteOffset, false, ec); } | |
| 51 int32_t getInt32(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 52 uint32_t getUint32(unsigned byteOffset, ExceptionState& ec) { return getUint
32(byteOffset, false, ec); } | |
| 53 uint32_t getUint32(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 54 float getFloat32(unsigned byteOffset, ExceptionState& ec) { return getFloat3
2(byteOffset, false, ec); } | |
| 55 float getFloat32(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 56 double getFloat64(unsigned byteOffset, ExceptionState& ec) { return getFloat
64(byteOffset, false, ec); } | |
| 57 double getFloat64(unsigned byteOffset, bool littleEndian, ExceptionState&); | |
| 58 | |
| 59 void setInt8(unsigned byteOffset, int8_t value, ExceptionState&); | |
| 60 void setUint8(unsigned byteOffset, uint8_t value, ExceptionState&); | |
| 61 void setInt16(unsigned byteOffset, int16_t value, ExceptionState& ec) { setI
nt16(byteOffset, value, false, ec); } | |
| 62 void setInt16(unsigned byteOffset, int16_t value, bool littleEndian, Excepti
onState&); | |
| 63 void setUint16(unsigned byteOffset, uint16_t value, ExceptionState& ec) { se
tUint16(byteOffset, value, false, ec); } | |
| 64 void setUint16(unsigned byteOffset, uint16_t value, bool littleEndian, Excep
tionState&); | |
| 65 void setInt32(unsigned byteOffset, int32_t value, ExceptionState& ec) { setI
nt32(byteOffset, value, false, ec); } | |
| 66 void setInt32(unsigned byteOffset, int32_t value, bool littleEndian, Excepti
onState&); | |
| 67 void setUint32(unsigned byteOffset, uint32_t value, ExceptionState& ec) { se
tUint32(byteOffset, value, false, ec); } | |
| 68 void setUint32(unsigned byteOffset, uint32_t value, bool littleEndian, Excep
tionState&); | |
| 69 void setFloat32(unsigned byteOffset, float value, ExceptionState& ec) { setF
loat32(byteOffset, value, false, ec); } | |
| 70 void setFloat32(unsigned byteOffset, float value, bool littleEndian, Excepti
onState&); | |
| 71 void setFloat64(unsigned byteOffset, double value, ExceptionState& ec) { set
Float64(byteOffset, value, false, ec); } | |
| 72 void setFloat64(unsigned byteOffset, double value, bool littleEndian, Except
ionState&); | |
| 73 | |
| 74 virtual ViewType type() const override | |
| 75 { | |
| 76 return TypeDataView; | |
| 77 } | |
| 78 | |
| 79 protected: | |
| 80 virtual void neuter() override; | |
| 81 | |
| 82 private: | |
| 83 DataView(PassRefPtr<ArrayBuffer>, unsigned byteOffset, unsigned byteLength); | |
| 84 | |
| 85 template<typename T> | |
| 86 inline bool beyondRange(unsigned byteOffset) const { return byteOffset >= m_
byteLength || byteOffset + sizeof(T) > m_byteLength; } | |
| 87 | |
| 88 template<typename T> | |
| 89 T getData(unsigned byteOffset, bool littleEndian, ExceptionState&) const; | |
| 90 | |
| 91 template<typename T> | |
| 92 void setData(unsigned byteOffset, T value, bool littleEndian, ExceptionState
&); | |
| 93 | |
| 94 unsigned m_byteLength; | |
| 95 }; | |
| 96 | |
| 97 } // namespace blink | |
| 98 | |
| 99 #endif // SKY_ENGINE_CORE_HTML_CANVAS_DATAVIEW_H_ | |
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