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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All rights reserved. | 2 * Copyright (C) 2008 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
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137 return nullptr; | 137 return nullptr; |
138 } | 138 } |
139 ASSERT(lengthInPixels && width); | 139 ASSERT(lengthInPixels && width); |
140 if (height != lengthInPixels / width) { | 140 if (height != lengthInPixels / width) { |
141 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not equal to (4 * width * height)."); | 141 exceptionState.throwDOMException(IndexSizeError, "The input data byte le
ngth is not equal to (4 * width * height)."); |
142 return nullptr; | 142 return nullptr; |
143 } | 143 } |
144 return adoptRefWillBeNoop(new ImageData(IntSize(width, height), data)); | 144 return adoptRefWillBeNoop(new ImageData(IntSize(width, height), data)); |
145 } | 145 } |
146 | 146 |
147 v8::Handle<v8::Object> ImageData::associateWithWrapper(v8::Isolate* isolate, con
st WrapperTypeInfo* wrapperType, v8::Handle<v8::Object> wrapper) | 147 v8::Local<v8::Object> ImageData::associateWithWrapper(v8::Isolate* isolate, cons
t WrapperTypeInfo* wrapperType, v8::Local<v8::Object> wrapper) |
148 { | 148 { |
149 ScriptWrappable::associateWithWrapper(isolate, wrapperType, wrapper); | 149 ScriptWrappable::associateWithWrapper(isolate, wrapperType, wrapper); |
150 | 150 |
151 if (!wrapper.IsEmpty() && m_data.get()) { | 151 if (!wrapper.IsEmpty() && m_data.get()) { |
152 // Create a V8 Uint8ClampedArray object and set the "data" property | 152 // Create a V8 Uint8ClampedArray object and set the "data" property |
153 // of the ImageData object to the created v8 object, eliminating the | 153 // of the ImageData object to the created v8 object, eliminating the |
154 // C++ callback when accessing the "data" property. | 154 // C++ callback when accessing the "data" property. |
155 v8::Handle<v8::Value> pixelArray = toV8(m_data.get(), wrapper, isolate); | 155 v8::Local<v8::Value> pixelArray = toV8(m_data.get(), wrapper, isolate); |
156 if (pixelArray.IsEmpty() || !v8CallBoolean(wrapper->ForceSet(isolate->Ge
tCurrentContext(), v8AtomicString(isolate, "data"), pixelArray, v8::ReadOnly))) | 156 if (pixelArray.IsEmpty() || !v8CallBoolean(wrapper->ForceSet(isolate->Ge
tCurrentContext(), v8AtomicString(isolate, "data"), pixelArray, v8::ReadOnly))) |
157 return v8::Handle<v8::Object>(); | 157 return v8::Local<v8::Object>(); |
158 } | 158 } |
159 return wrapper; | 159 return wrapper; |
160 } | 160 } |
161 | 161 |
162 ImageData::ImageData(const IntSize& size) | 162 ImageData::ImageData(const IntSize& size) |
163 : m_size(size) | 163 : m_size(size) |
164 , m_data(DOMUint8ClampedArray::create(size.width() * size.height() * 4)) | 164 , m_data(DOMUint8ClampedArray::create(size.width() * size.height() * 4)) |
165 { | 165 { |
166 } | 166 } |
167 | 167 |
168 ImageData::ImageData(const IntSize& size, PassRefPtr<DOMUint8ClampedArray> byteA
rray) | 168 ImageData::ImageData(const IntSize& size, PassRefPtr<DOMUint8ClampedArray> byteA
rray) |
169 : m_size(size) | 169 : m_size(size) |
170 , m_data(byteArray) | 170 , m_data(byteArray) |
171 { | 171 { |
172 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h
eight() * 4) <= m_data->length()); | 172 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h
eight() * 4) <= m_data->length()); |
173 } | 173 } |
174 | 174 |
175 } // namespace blink | 175 } // namespace blink |
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