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1 /* | 1 /* |
2 * Copyright (C) 2007, 2010 Rob Buis <buis@kde.org> | 2 * Copyright (C) 2007, 2010 Rob Buis <buis@kde.org> |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
18 */ | 18 */ |
19 | |
20 #include "core/svg/SVGViewSpec.h" | 19 #include "core/svg/SVGViewSpec.h" |
21 | 20 |
22 #include "bindings/core/v8/ExceptionMessages.h" | |
23 #include "bindings/core/v8/ExceptionState.h" | |
24 #include "core/SVGNames.h" | 21 #include "core/SVGNames.h" |
25 #include "core/dom/ExceptionCode.h" | 22 #include "core/dom/ExceptionCode.h" |
26 #include "core/svg/SVGAnimatedTransformList.h" | |
27 #include "core/svg/SVGParserUtilities.h" | |
28 #include "platform/text/ParserUtilities.h" | |
29 | 23 |
30 namespace blink { | 24 namespace blink { |
31 | 25 |
32 SVGViewSpec::SVGViewSpec(SVGSVGElement* contextElement) | 26 SVGViewSpec::SVGViewSpec(SVGSVGElement* contextElement) |
33 // Note: addToPropertyMap is not needed, as SVGViewSpec do not correspond to
an element. | 27 // Note: addToPropertyMap is not needed, as SVGViewSpec do not correspond to
an element. |
34 // Note: We make tear-offs' contextElement the target element of SVGViewSpec
. | 28 // Note: We make tear-offs' contextElement the target element of SVGViewSpec
. |
35 // This contextElement will be only used for keeping this alive from the tea
roff. | 29 // This contextElement will be only used for keeping this alive from the tea
roff. |
36 // SVGSVGElement holds a strong-ref to this SVGViewSpec, so this is kept ali
ve as: | 30 // SVGSVGElement holds a strong-ref to this SVGViewSpec, so this is kept ali
ve as: |
37 // AnimatedProperty tearoff -(contextElement)-> SVGSVGElement -(RefPtr)-> SV
GViewSpec. | 31 // AnimatedProperty tearoff -(contextElement)-> SVGSVGElement -(RefPtr)-> SV
GViewSpec. |
38 : SVGFitToViewBox(contextElement, PropertyMapPolicySkip) | 32 : SVGFitToViewBox(contextElement, PropertyMapPolicySkip) |
39 , m_contextElement(contextElement) | 33 , m_contextElement(contextElement) |
40 , m_transform(SVGAnimatedTransformList::create(contextElement, SVGNames::tra
nsformAttr, SVGTransformList::create())) | |
41 { | 34 { |
42 ASSERT(m_contextElement); | 35 ASSERT(m_contextElement); |
43 | 36 |
44 viewBox()->setReadOnly(); | 37 viewBox()->setReadOnly(); |
45 preserveAspectRatio()->setReadOnly(); | 38 preserveAspectRatio()->setReadOnly(); |
46 m_transform->setReadOnly(); | |
47 // Note: addToPropertyMap is not needed, as SVGViewSpec do not correspond to
an element. | 39 // Note: addToPropertyMap is not needed, as SVGViewSpec do not correspond to
an element. |
48 } | 40 } |
49 | 41 |
50 DEFINE_TRACE(SVGViewSpec) | 42 DEFINE_TRACE(SVGViewSpec) |
51 { | 43 { |
52 visitor->trace(m_contextElement); | 44 visitor->trace(m_contextElement); |
53 visitor->trace(m_transform); | |
54 SVGFitToViewBox::trace(visitor); | 45 SVGFitToViewBox::trace(visitor); |
55 } | 46 } |
56 | 47 |
57 DEFINE_TRACE_WRAPPERS(SVGViewSpec) | 48 DEFINE_TRACE_WRAPPERS(SVGViewSpec) |
58 { | 49 { |
59 visitor->traceWrappers(m_contextElement); | 50 visitor->traceWrappers(m_contextElement); |
60 } | 51 } |
61 | 52 |
62 bool SVGViewSpec::parseViewSpec(const String& spec) | |
63 { | |
64 if (spec.isEmpty() || !m_contextElement) | |
65 return false; | |
66 if (spec.is8Bit()) { | |
67 const LChar* ptr = spec.characters8(); | |
68 const LChar* end = ptr + spec.length(); | |
69 return parseViewSpecInternal(ptr, end); | |
70 } | |
71 const UChar* ptr = spec.characters16(); | |
72 const UChar* end = ptr + spec.length(); | |
73 return parseViewSpecInternal(ptr, end); | |
74 } | |
75 | |
76 void SVGViewSpec::reset() | 53 void SVGViewSpec::reset() |
77 { | 54 { |
78 resetZoomAndPan(); | 55 resetZoomAndPan(); |
79 m_transform->baseValue()->clear(); | |
80 updateViewBox(FloatRect()); | 56 updateViewBox(FloatRect()); |
81 ASSERT(preserveAspectRatio()); | 57 ASSERT(preserveAspectRatio()); |
82 preserveAspectRatio()->baseValue()->setAlign(SVGPreserveAspectRatio::SVG_PRE
SERVEASPECTRATIO_XMIDYMID); | 58 preserveAspectRatio()->baseValue()->setAlign(SVGPreserveAspectRatio::SVG_PRE
SERVEASPECTRATIO_XMIDYMID); |
83 preserveAspectRatio()->baseValue()->setMeetOrSlice(SVGPreserveAspectRatio::S
VG_MEETORSLICE_MEET); | 59 preserveAspectRatio()->baseValue()->setMeetOrSlice(SVGPreserveAspectRatio::S
VG_MEETORSLICE_MEET); |
84 m_viewTargetString = emptyString(); | |
85 } | |
86 | |
87 void SVGViewSpec::detachContextElement() | |
88 { | |
89 m_transform = nullptr; | |
90 clearViewBox(); | |
91 clearPreserveAspectRatio(); | |
92 m_contextElement = nullptr; | |
93 } | |
94 | |
95 SVGElement* SVGViewSpec::viewTarget() const | |
96 { | |
97 if (!m_contextElement) | |
98 return nullptr; | |
99 Element* element = m_contextElement->treeScope().getElementById(AtomicString
(m_viewTargetString)); | |
100 if (!element || !element->isSVGElement()) | |
101 return nullptr; | |
102 return toSVGElement(element); | |
103 } | |
104 | |
105 String SVGViewSpec::viewBoxString() const | |
106 { | |
107 if (!viewBox()) | |
108 return String(); | |
109 | |
110 return viewBox()->currentValue()->valueAsString(); | |
111 } | |
112 | |
113 String SVGViewSpec::preserveAspectRatioString() const | |
114 { | |
115 if (!preserveAspectRatio()) | |
116 return String(); | |
117 | |
118 return preserveAspectRatio()->baseValue()->valueAsString(); | |
119 } | |
120 | |
121 String SVGViewSpec::transformString() const | |
122 { | |
123 if (!m_transform) | |
124 return String(); | |
125 | |
126 return m_transform->baseValue()->valueAsString(); | |
127 } | 60 } |
128 | 61 |
129 void SVGViewSpec::setZoomAndPan(unsigned short, ExceptionState& exceptionState) | 62 void SVGViewSpec::setZoomAndPan(unsigned short, ExceptionState& exceptionState) |
130 { | 63 { |
131 // SVGViewSpec and all of its content is read-only. | 64 // SVGViewSpec and all of its content is read-only. |
132 exceptionState.throwDOMException(NoModificationAllowedError, ExceptionMessag
es::readOnly()); | 65 exceptionState.throwDOMException(NoModificationAllowedError, ExceptionMessag
es::readOnly()); |
133 } | 66 } |
134 | |
135 static const LChar svgViewSpec[] = {'s', 'v', 'g', 'V', 'i', 'e', 'w'}; | |
136 static const LChar viewBoxSpec[] = {'v', 'i', 'e', 'w', 'B', 'o', 'x'}; | |
137 static const LChar preserveAspectRatioSpec[] = {'p', 'r', 'e', 's', 'e', 'r', 'v
', 'e', 'A', 's', 'p', 'e', 'c', 't', 'R', 'a', 't', 'i', 'o'}; | |
138 static const LChar transformSpec[] = {'t', 'r', 'a', 'n', 's', 'f', 'o', 'r', 'm
'}; | |
139 static const LChar zoomAndPanSpec[] = {'z', 'o', 'o', 'm', 'A', 'n', 'd', 'P', '
a', 'n'}; | |
140 static const LChar viewTargetSpec[] = {'v', 'i', 'e', 'w', 'T', 'a', 'r', 'g',
'e', 't'}; | |
141 | |
142 template<typename CharType> | |
143 bool SVGViewSpec::parseViewSpecInternal(const CharType* ptr, const CharType* end
) | |
144 { | |
145 if (!skipString(ptr, end, svgViewSpec, WTF_ARRAY_LENGTH(svgViewSpec))) | |
146 return false; | |
147 | |
148 if (ptr >= end || *ptr != '(') | |
149 return false; | |
150 ptr++; | |
151 | |
152 while (ptr < end && *ptr != ')') { | |
153 if (*ptr == 'v') { | |
154 if (skipString(ptr, end, viewBoxSpec, WTF_ARRAY_LENGTH(viewBoxSpec))
) { | |
155 if (ptr >= end || *ptr != '(') | |
156 return false; | |
157 ptr++; | |
158 float x = 0.0f; | |
159 float y = 0.0f; | |
160 float width = 0.0f; | |
161 float height = 0.0f; | |
162 if (!(parseNumber(ptr, end, x) && parseNumber(ptr, end, y) && pa
rseNumber(ptr, end, width) && parseNumber(ptr, end, height, DisallowWhitespace))
) | |
163 return false; | |
164 updateViewBox(FloatRect(x, y, width, height)); | |
165 if (ptr >= end || *ptr != ')') | |
166 return false; | |
167 ptr++; | |
168 } else if (skipString(ptr, end, viewTargetSpec, WTF_ARRAY_LENGTH(vie
wTargetSpec))) { | |
169 if (ptr >= end || *ptr != '(') | |
170 return false; | |
171 const CharType* viewTargetStart = ++ptr; | |
172 while (ptr < end && *ptr != ')') | |
173 ptr++; | |
174 if (ptr >= end) | |
175 return false; | |
176 m_viewTargetString = String(viewTargetStart, ptr - viewTargetSta
rt); | |
177 ptr++; | |
178 } else | |
179 return false; | |
180 } else if (*ptr == 'z') { | |
181 if (!skipString(ptr, end, zoomAndPanSpec, WTF_ARRAY_LENGTH(zoomAndPa
nSpec))) | |
182 return false; | |
183 if (ptr >= end || *ptr != '(') | |
184 return false; | |
185 ptr++; | |
186 if (!parseZoomAndPan(ptr, end)) | |
187 return false; | |
188 if (ptr >= end || *ptr != ')') | |
189 return false; | |
190 ptr++; | |
191 } else if (*ptr == 'p') { | |
192 if (!skipString(ptr, end, preserveAspectRatioSpec, WTF_ARRAY_LENGTH(
preserveAspectRatioSpec))) | |
193 return false; | |
194 if (ptr >= end || *ptr != '(') | |
195 return false; | |
196 ptr++; | |
197 if (!preserveAspectRatio()->baseValue()->parse(ptr, end, false)) | |
198 return false; | |
199 if (ptr >= end || *ptr != ')') | |
200 return false; | |
201 ptr++; | |
202 } else if (*ptr == 't') { | |
203 if (!skipString(ptr, end, transformSpec, WTF_ARRAY_LENGTH(transformS
pec))) | |
204 return false; | |
205 if (ptr >= end || *ptr != '(') | |
206 return false; | |
207 ptr++; | |
208 m_transform->baseValue()->parse(ptr, end); | |
209 if (ptr >= end || *ptr != ')') | |
210 return false; | |
211 ptr++; | |
212 } else | |
213 return false; | |
214 | |
215 if (ptr < end && *ptr == ';') | |
216 ptr++; | |
217 } | |
218 | |
219 if (ptr >= end || *ptr != ')') | |
220 return false; | |
221 | |
222 return true; | |
223 } | |
224 | |
225 } // namespace blink | 67 } // namespace blink |
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