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Side by Side Diff: third_party/WebKit/Source/core/svg/SVGViewSpec.cpp

Issue 2163213007: Deprecate currentView, useCurrentView properties of SVGSVGElement and SVGViewSpec interface (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 5 months ago
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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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