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Side by Side Diff: Source/core/html/ImageData.cpp

Issue 196343032: Implement ImageData constructors. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Generate code that custom wrap()s constructor instances Created 6 years, 9 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 11 matching lines...) Expand all
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 "config.h" 29 #include "config.h"
30 #include "core/html/ImageData.h" 30 #include "core/html/ImageData.h"
31 31
32 #include "bindings/v8/ExceptionState.h"
33 #include "core/dom/ExceptionCode.h"
34
32 namespace WebCore { 35 namespace WebCore {
33 36
34 PassRefPtr<ImageData> ImageData::create(const IntSize& size) 37 PassRefPtr<ImageData> ImageData::create(const IntSize& size)
35 { 38 {
36 Checked<int, RecordOverflow> dataSize = 4; 39 Checked<int, RecordOverflow> dataSize = 4;
37 dataSize *= size.width(); 40 dataSize *= size.width();
38 dataSize *= size.height(); 41 dataSize *= size.height();
39 if (dataSize.hasOverflowed()) 42 if (dataSize.hasOverflowed())
40 return nullptr; 43 return nullptr;
41 44
42 return adoptRef(new ImageData(size)); 45 return adoptRef(new ImageData(size));
43 } 46 }
44 47
45 PassRefPtr<ImageData> ImageData::create(const IntSize& size, PassRefPtr<Uint8Cla mpedArray> byteArray) 48 PassRefPtr<ImageData> ImageData::create(const IntSize& size, PassRefPtr<Uint8Cla mpedArray> byteArray)
46 { 49 {
47 Checked<int, RecordOverflow> dataSize = 4; 50 Checked<int, RecordOverflow> dataSize = 4;
48 dataSize *= size.width(); 51 dataSize *= size.width();
49 dataSize *= size.height(); 52 dataSize *= size.height();
50 if (dataSize.hasOverflowed()) 53 if (dataSize.hasOverflowed())
51 return nullptr; 54 return nullptr;
52 55
53 if (dataSize.unsafeGet() < 0 56 if (dataSize.unsafeGet() < 0
54 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length()) 57 || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length())
55 return nullptr; 58 return nullptr;
56 59
57 return adoptRef(new ImageData(size, byteArray)); 60 return adoptRef(new ImageData(size, byteArray));
58 } 61 }
59 62
63 PassRefPtr<ImageData> ImageData::create(unsigned width, unsigned height, Excepti onState& exceptionState)
64 {
65 if (!width || !height) {
66 exceptionState.throwDOMException(IndexSizeError, String::format("The sou rce %s is zero or not a number.", width ? "height" : "width"));
67 return nullptr;
68 }
69
70 Checked<unsigned, RecordOverflow> dataSize = 4;
71 dataSize *= width;
72 dataSize *= height;
73 if (dataSize.hasOverflowed()) {
74 exceptionState.throwDOMException(IndexSizeError, "The requested image si ze exceeds the supported range.");
75 return nullptr;
76 }
77
78 RefPtr<ImageData> imageData = adoptRef(new ImageData(IntSize(width, height)) );
79 imageData->data()->zeroFill();
80 return imageData.release();
81 }
82
83 PassRefPtr<ImageData> ImageData::create(Uint8ClampedArray* data, unsigned width, unsigned height, ExceptionState& exceptionState)
84 {
85 if (!data) {
86 exceptionState.throwTypeError("Expected a Uint8ClampedArray as first arg ument.");
87 return nullptr;
88 }
89 if (!width) {
90 exceptionState.throwDOMException(IndexSizeError, "The source width is ze ro or not a number.");
91 return nullptr;
92 }
93
94 unsigned length = data->length();
95 if (!length) {
96 exceptionState.throwDOMException(IndexSizeError, "The input data has a z ero byte length.");
97 return nullptr;
98 }
99 if (length % 4) {
100 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of 4.");
101 return nullptr;
102 }
103 length /= 4;
104 if (length % width) {
105 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not a multiple of (4 * width).");
106 return nullptr;
107 }
108 if (!height) {
109 height = length / width;
110 } else if (height != length / width) {
111 exceptionState.throwDOMException(IndexSizeError, "The input data byte le ngth is not equal to (4 * width * height).");
112 return nullptr;
113 }
114
115 return adoptRef(new ImageData(IntSize(width, height), data));
116 }
117
60 ImageData::ImageData(const IntSize& size) 118 ImageData::ImageData(const IntSize& size)
61 : m_size(size) 119 : m_size(size)
62 , m_data(Uint8ClampedArray::createUninitialized(size.width() * size.height() * 4)) 120 , m_data(Uint8ClampedArray::createUninitialized(size.width() * size.height() * 4))
63 { 121 {
64 ScriptWrappable::init(this); 122 ScriptWrappable::init(this);
65 } 123 }
66 124
67 ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArra y) 125 ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArra y)
68 : m_size(size) 126 : m_size(size)
69 , m_data(byteArray) 127 , m_data(byteArray)
70 { 128 {
71 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h eight() * 4) <= m_data->length()); 129 ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.h eight() * 4) <= m_data->length());
72 ScriptWrappable::init(this); 130 ScriptWrappable::init(this);
73 } 131 }
74 132
75 } 133 }
76 134
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