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1 /* | 1 /* |
2 * Copyright (C) 2013 Apple Inc. All rights reserved. | 2 * Copyright (C) 2013 Apple Inc. All rights reserved. |
3 * Copyright (C) 2013 Google Inc. All rights reserved. | 3 * Copyright (C) 2013 Google Inc. All rights reserved. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions are | 6 * modification, are permitted provided that the following conditions are |
7 * met: | 7 * met: |
8 * | 8 * |
9 * * Redistributions of source code must retain the above copyright | 9 * * Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
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27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
30 */ | 30 */ |
31 | 31 |
32 #ifndef HTMLSrcsetParser_h | 32 #ifndef HTMLSrcsetParser_h |
33 #define HTMLSrcsetParser_h | 33 #define HTMLSrcsetParser_h |
34 | 34 |
35 #include "core/CoreExport.h" | 35 #include "core/CoreExport.h" |
36 #include "wtf/Allocator.h" | 36 #include "wtf/Allocator.h" |
| 37 #include "wtf/text/StringView.h" |
37 #include "wtf/text/WTFString.h" | 38 #include "wtf/text/WTFString.h" |
38 | 39 |
39 namespace blink { | 40 namespace blink { |
40 | 41 |
41 class Document; | 42 class Document; |
42 | 43 |
43 enum { UninitializedDescriptor = -1 }; | 44 enum { UninitializedDescriptor = -1 }; |
44 | 45 |
45 class DescriptorParsingResult { | 46 class DescriptorParsingResult { |
46 STACK_ALLOCATED(); | 47 STACK_ALLOCATED(); |
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79 }; | 80 }; |
80 | 81 |
81 ImageCandidate() | 82 ImageCandidate() |
82 : m_density(1.0) | 83 : m_density(1.0) |
83 , m_resourceWidth(UninitializedDescriptor) | 84 , m_resourceWidth(UninitializedDescriptor) |
84 , m_originAttribute(SrcsetOrigin) | 85 , m_originAttribute(SrcsetOrigin) |
85 { | 86 { |
86 } | 87 } |
87 | 88 |
88 ImageCandidate(const String& source, unsigned start, unsigned length, const
DescriptorParsingResult& result, OriginAttribute originAttribute) | 89 ImageCandidate(const String& source, unsigned start, unsigned length, const
DescriptorParsingResult& result, OriginAttribute originAttribute) |
89 : m_string(source.createView(start, length)) | 90 : m_source(source) |
90 , m_density(result.hasDensity()?result.density():UninitializedDescriptor
) | 91 , m_string(source, start, length) |
91 , m_resourceWidth(result.hasWidth()?result.getResourceWidth():Uninitiali
zedDescriptor) | 92 , m_density(result.hasDensity() ? result.density() : UninitializedDescri
ptor) |
| 93 , m_resourceWidth(result.hasWidth() ? result.getResourceWidth() : Uninit
ializedDescriptor) |
92 , m_originAttribute(originAttribute) | 94 , m_originAttribute(originAttribute) |
93 { | 95 { |
94 } | 96 } |
95 | 97 |
96 String toString() const | 98 String toString() const |
97 { | 99 { |
98 return String(m_string.toString()); | 100 return m_string.toString(); |
99 } | 101 } |
100 | 102 |
101 AtomicString url() const | 103 AtomicString url() const |
102 { | 104 { |
103 return AtomicString(m_string.toString()); | 105 return AtomicString(toString()); |
104 } | 106 } |
105 | 107 |
106 void setDensity(float factor) | 108 void setDensity(float factor) |
107 { | 109 { |
108 m_density = factor; | 110 m_density = factor; |
109 } | 111 } |
110 | 112 |
111 float density() const | 113 float density() const |
112 { | 114 { |
113 return m_density; | 115 return m_density; |
114 } | 116 } |
115 | 117 |
116 int getResourceWidth() const | 118 int getResourceWidth() const |
117 { | 119 { |
118 return m_resourceWidth; | 120 return m_resourceWidth; |
119 } | 121 } |
120 | 122 |
121 bool srcOrigin() const | 123 bool srcOrigin() const |
122 { | 124 { |
123 return (m_originAttribute == SrcOrigin); | 125 return (m_originAttribute == SrcOrigin); |
124 } | 126 } |
125 | 127 |
126 inline bool isEmpty() const | 128 inline bool isEmpty() const |
127 { | 129 { |
128 return m_string.isEmpty(); | 130 return m_string.isEmpty(); |
129 } | 131 } |
130 | 132 |
131 private: | 133 private: |
| 134 String m_source; // Keep the StringView buffer alive. |
132 StringView m_string; | 135 StringView m_string; |
133 float m_density; | 136 float m_density; |
134 int m_resourceWidth; | 137 int m_resourceWidth; |
135 OriginAttribute m_originAttribute; | 138 OriginAttribute m_originAttribute; |
136 }; | 139 }; |
137 | 140 |
138 ImageCandidate bestFitSourceForSrcsetAttribute(float deviceScaleFactor, float so
urceSize, const String& srcsetAttribute, Document* = nullptr); | 141 ImageCandidate bestFitSourceForSrcsetAttribute(float deviceScaleFactor, float so
urceSize, const String& srcsetAttribute, Document* = nullptr); |
139 | 142 |
140 CORE_EXPORT ImageCandidate bestFitSourceForImageAttributes(float deviceScaleFact
or, float sourceSize, const String& srcAttribute, const String& srcsetAttribute,
Document* = nullptr); | 143 CORE_EXPORT ImageCandidate bestFitSourceForImageAttributes(float deviceScaleFact
or, float sourceSize, const String& srcAttribute, const String& srcsetAttribute,
Document* = nullptr); |
141 | 144 |
142 String bestFitSourceForImageAttributes(float deviceScaleFactor, float sourceSize
, const String& srcAttribute, ImageCandidate& srcsetImageCandidate); | 145 String bestFitSourceForImageAttributes(float deviceScaleFactor, float sourceSize
, const String& srcAttribute, ImageCandidate& srcsetImageCandidate); |
143 | 146 |
144 } // namespace blink | 147 } // namespace blink |
145 | 148 |
146 #endif | 149 #endif |
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