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Side by Side Diff: sky/engine/core/html/ImageData.cpp

Issue 922893002: Merge the Sky Engine changes from the SkyDart branch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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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
(...skipping 12 matching lines...) Expand all
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */ 27 */
28 28
29 #include "sky/engine/config.h" 29 #include "sky/engine/config.h"
30 #include "sky/engine/core/html/ImageData.h" 30 #include "sky/engine/core/html/ImageData.h"
31 31
32 #include "gen/sky/platform/RuntimeEnabledFeatures.h" 32 #include "gen/sky/platform/RuntimeEnabledFeatures.h"
33 #include "sky/engine/bindings/core/v8/ExceptionState.h" 33 #include "sky/engine/bindings2/exception_state.h"
34 #include "sky/engine/bindings/core/v8/custom/V8Uint8ClampedArrayCustom.h"
35 #include "sky/engine/core/dom/ExceptionCode.h" 34 #include "sky/engine/core/dom/ExceptionCode.h"
36 35
37 namespace blink { 36 namespace blink {
38 37
39 PassRefPtr<ImageData> ImageData::create(const IntSize& size) 38 PassRefPtr<ImageData> ImageData::create(const IntSize& size)
40 { 39 {
41 Checked<int, RecordOverflow> dataSize = 4; 40 Checked<int, RecordOverflow> dataSize = 4;
42 dataSize *= size.width(); 41 dataSize *= size.width();
43 dataSize *= size.height(); 42 dataSize *= size.height();
44 if (dataSize.hasOverflowed()) 43 if (dataSize.hasOverflowed())
(...skipping 13 matching lines...) Expand all
58 if (dataSize.unsafeGet() < 0 57 if (dataSize.unsafeGet() < 0
59 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length()) 58 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length())
60 return nullptr; 59 return nullptr;
61 60
62 return adoptRef(new ImageData(size, byteArray)); 61 return adoptRef(new ImageData(size, byteArray));
63 } 62 }
64 63
65 PassRefPtr<ImageData> ImageData::create(unsigned width, unsigned height, Excepti onState& exceptionState) 64 PassRefPtr<ImageData> ImageData::create(unsigned width, unsigned height, Excepti onState& exceptionState)
66 { 65 {
67 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) { 66 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) {
68 exceptionState.throwTypeError("Illegal constructor"); 67 exceptionState.ThrowTypeError("Illegal constructor");
69 return nullptr; 68 return nullptr;
70 } 69 }
71 if (!width || !height) { 70 if (!width || !height) {
72 exceptionState.throwDOMException(IndexSizeError, String::format("The sou rce %s is zero or not a number.", width ? "height" : "width")); 71 exceptionState.ThrowDOMException(IndexSizeError, String::format("The sou rce %s is zero or not a number.", width ? "height" : "width"));
73 return nullptr; 72 return nullptr;
74 } 73 }
75 74
76 Checked<unsigned, RecordOverflow> dataSize = 4; 75 Checked<unsigned, RecordOverflow> dataSize = 4;
77 dataSize *= width; 76 dataSize *= width;
78 dataSize *= height; 77 dataSize *= height;
79 if (dataSize.hasOverflowed()) { 78 if (dataSize.hasOverflowed()) {
80 exceptionState.throwDOMException(IndexSizeError, "The requested image si ze exceeds the supported range."); 79 exceptionState.ThrowDOMException(IndexSizeError, "The requested image si ze exceeds the supported range.");
81 return nullptr; 80 return nullptr;
82 } 81 }
83 82
84 RefPtr<ImageData> imageData = adoptRef(new ImageData(IntSize(width, height)) ); 83 RefPtr<ImageData> imageData = adoptRef(new ImageData(IntSize(width, height)) );
85 imageData->data()->zeroFill(); 84 imageData->data()->zeroFill();
86 return imageData.release(); 85 return imageData.release();
87 } 86 }
88 87
89 PassRefPtr<ImageData> ImageData::create(Uint8ClampedArray* data, unsigned width, unsigned height, ExceptionState& exceptionState) 88 PassRefPtr<ImageData> ImageData::create(Uint8ClampedArray* data, unsigned width, unsigned height, ExceptionState& exceptionState)
90 { 89 {
91 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) { 90 if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) {
92 exceptionState.throwTypeError("Illegal constructor"); 91 exceptionState.ThrowTypeError("Illegal constructor");
93 return nullptr; 92 return nullptr;
94 } 93 }
95 if (!data) { 94 if (!data) {
96 exceptionState.throwTypeError("Expected a Uint8ClampedArray as first arg ument."); 95 exceptionState.ThrowTypeError("Expected a Uint8ClampedArray as first arg ument.");
97 return nullptr; 96 return nullptr;
98 } 97 }
99 if (!width) { 98 if (!width) {
100 exceptionState.throwDOMException(IndexSizeError, "The source width is ze ro or not a number."); 99 exceptionState.ThrowDOMException(IndexSizeError, "The source width is ze ro or not a number.");
101 return nullptr; 100 return nullptr;
102 } 101 }
103 102
104 unsigned length = data->length(); 103 unsigned length = data->length();
105 if (!length) { 104 if (!length) {
106 exceptionState.throwDOMException(IndexSizeError, "The input data has a z ero byte length."); 105 exceptionState.ThrowDOMException(IndexSizeError, "The input data has a z ero byte length.");
107 return nullptr; 106 return nullptr;
108 } 107 }
109 if (length % 4) { 108 if (length % 4) {
110 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of 4."); 109 exceptionState.ThrowDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of 4.");
111 return nullptr; 110 return nullptr;
112 } 111 }
113 length /= 4; 112 length /= 4;
114 if (length % width) { 113 if (length % width) {
115 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of (4 * width)."); 114 exceptionState.ThrowDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of (4 * width).");
116 return nullptr; 115 return nullptr;
117 } 116 }
118 if (!height) { 117 if (!height) {
119 height = length / width; 118 height = length / width;
120 } else if (height != length / width) { 119 } else if (height != length / width) {
121 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not equal to (4 * width * height)."); 120 exceptionState.ThrowDOMException(IndexSizeError, "The input data byte le ngth is not equal to (4 * width * height).");
122 return nullptr; 121 return nullptr;
123 } 122 }
124 123
125 return adoptRef(new ImageData(IntSize(width, height), data)); 124 return adoptRef(new ImageData(IntSize(width, height), data));
126 } 125 }
127 126
128 v8::Handle<v8::Object> ImageData::wrap(v8::Handle<v8::Object> creationContext, v 8::Isolate* isolate)
129 {
130 v8::Handle<v8::Object> wrapper = ScriptWrappable::wrap(creationContext, isol ate);
131 if (!wrapper.IsEmpty()) {
132 // Create a V8 Uint8ClampedArray object.
133 v8::Handle<v8::Value> pixelArray = toV8(data(), creationContext, isolate );
134 // Set the "data" property of the ImageData object to
135 // the created v8 object, eliminating the C++ callback
136 // when accessing the "data" property.
137 if (!pixelArray.IsEmpty())
138 wrapper->ForceSet(v8AtomicString(isolate, "data"), pixelArray, v8::R eadOnly);
139 }
140 return wrapper;
141 }
142
143 ImageData::ImageData(const IntSize& size) 127 ImageData::ImageData(const IntSize& size)
144 : m_size(size) 128 : m_size(size)
145 , m_data(Uint8ClampedArray::create(size.width() * size.height() * 4)) 129 , m_data(Uint8ClampedArray::create(size.width() * size.height() * 4))
146 { 130 {
147 } 131 }
148 132
149 ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArra y) 133 ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArra y)
150 : m_size(size) 134 : m_size(size)
151 , m_data(byteArray) 135 , m_data(byteArray)
152 { 136 {
153 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h eight() * 4) <= m_data->length()); 137 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h eight() * 4) <= m_data->length());
154 } 138 }
155 139
156 } 140 }
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