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| 1 /* | |
| 2 * Copyright (C) 2013 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2013 Google Inc. All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are | |
| 7 * met: | |
| 8 * | |
| 9 * * Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * * Redistributions in binary form must reproduce the above | |
| 12 * copyright notice, this list of conditions and the following disclaimer | |
| 13 * in the documentation and/or other materials provided with the | |
| 14 * distribution. | |
| 15 * * Neither the name of Google Inc. nor the names of its | |
| 16 * contributors may be used to endorse or promote products derived from | |
| 17 * this software without specific prior written permission. | |
| 18 * | |
| 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 30 */ | |
| 31 | |
| 32 #ifndef SKY_ENGINE_CORE_HTML_PARSER_HTMLSRCSETPARSER_H_ | |
| 33 #define SKY_ENGINE_CORE_HTML_PARSER_HTMLSRCSETPARSER_H_ | |
| 34 | |
| 35 #include "sky/engine/wtf/text/WTFString.h" | |
| 36 | |
| 37 namespace blink { | |
| 38 | |
| 39 enum { UninitializedDescriptor = -1 }; | |
| 40 | |
| 41 class DescriptorParsingResult { | |
| 42 public: | |
| 43 DescriptorParsingResult() | |
| 44 : m_density(UninitializedDescriptor) | |
| 45 , m_resourceWidth(UninitializedDescriptor) | |
| 46 , m_resourceHeight(UninitializedDescriptor) | |
| 47 { | |
| 48 } | |
| 49 | |
| 50 bool hasDensity() const { return m_density >= 0; } | |
| 51 bool hasWidth() const { return m_resourceWidth >= 0; } | |
| 52 bool hasHeight() const { return m_resourceHeight >= 0; } | |
| 53 | |
| 54 float density() const { ASSERT(hasDensity()); return m_density; } | |
| 55 unsigned resourceWidth() const { ASSERT(hasWidth()); return m_resourceWidth;
} | |
| 56 unsigned resourceHeight() const { ASSERT(hasHeight()); return m_resourceHeig
ht; } | |
| 57 | |
| 58 void setResourceWidth(int width) { ASSERT(width >= 0); m_resourceWidth = (un
signed)width; } | |
| 59 void setResourceHeight(int height) { ASSERT(height >= 0); m_resourceHeight =
(unsigned)height; } | |
| 60 void setDensity(float densityToSet) { ASSERT(densityToSet >= 0); m_density =
densityToSet; } | |
| 61 | |
| 62 private: | |
| 63 float m_density; | |
| 64 int m_resourceWidth; | |
| 65 int m_resourceHeight; | |
| 66 }; | |
| 67 | |
| 68 class ImageCandidate { | |
| 69 public: | |
| 70 enum OriginAttribute { | |
| 71 SrcsetOrigin, | |
| 72 SrcOrigin | |
| 73 }; | |
| 74 | |
| 75 ImageCandidate() | |
| 76 : m_density(1.0) | |
| 77 , m_resourceWidth(UninitializedDescriptor) | |
| 78 , m_originAttribute(SrcsetOrigin) | |
| 79 { | |
| 80 } | |
| 81 | |
| 82 ImageCandidate(const String& source, unsigned start, unsigned length, const
DescriptorParsingResult& result, OriginAttribute originAttribute) | |
| 83 : m_string(source.createView(start, length)) | |
| 84 , m_density(result.hasDensity()?result.density():UninitializedDescriptor
) | |
| 85 , m_resourceWidth(result.hasWidth()?result.resourceWidth():Uninitialized
Descriptor) | |
| 86 , m_originAttribute(originAttribute) | |
| 87 { | |
| 88 } | |
| 89 | |
| 90 String toString() const | |
| 91 { | |
| 92 return String(m_string.toString()); | |
| 93 } | |
| 94 | |
| 95 AtomicString url() const | |
| 96 { | |
| 97 return AtomicString(m_string.toString()); | |
| 98 } | |
| 99 | |
| 100 void setDensity(float factor) | |
| 101 { | |
| 102 m_density = factor; | |
| 103 } | |
| 104 | |
| 105 float density() const | |
| 106 { | |
| 107 return m_density; | |
| 108 } | |
| 109 | |
| 110 int resourceWidth() const | |
| 111 { | |
| 112 return m_resourceWidth; | |
| 113 } | |
| 114 | |
| 115 bool srcOrigin() const | |
| 116 { | |
| 117 return (m_originAttribute == SrcOrigin); | |
| 118 } | |
| 119 | |
| 120 inline bool isEmpty() const | |
| 121 { | |
| 122 return m_string.isEmpty(); | |
| 123 } | |
| 124 | |
| 125 private: | |
| 126 StringView m_string; | |
| 127 float m_density; | |
| 128 int m_resourceWidth; | |
| 129 OriginAttribute m_originAttribute; | |
| 130 }; | |
| 131 | |
| 132 ImageCandidate bestFitSourceForSrcsetAttribute(float deviceScaleFactor, unsigned
sourceSize, const String& srcsetAttribute); | |
| 133 | |
| 134 ImageCandidate bestFitSourceForImageAttributes(float deviceScaleFactor, unsigned
sourceSize, const String& srcAttribute, const String& srcsetAttribute); | |
| 135 | |
| 136 String bestFitSourceForImageAttributes(float deviceScaleFactor, unsigned sourceS
ize, const String& srcAttribute, ImageCandidate& srcsetImageCandidate); | |
| 137 | |
| 138 } | |
| 139 | |
| 140 #endif // SKY_ENGINE_CORE_HTML_PARSER_HTMLSRCSETPARSER_H_ | |
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Chromium Code Reviews
Issue 1215103007:
Remove remaining HTML elements (Closed)
Base URL: git@github.com:domokit/mojo.git@master