1 /*
2 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22 #include "config.h"
23
24 #if ENABLE(SVG)
25 #include "SVGPatternElement.h"
26
27 #include "AffineTransform.h"
28 #include "Attribute.h"
29 #include "Document.h"
30 #include "FloatConversion.h"
31 #include "GraphicsContext.h"
32 #include "ImageBuffer.h"
33 #include "PatternAttributes.h"
34 #include "RenderSVGContainer.h"
35 #include "RenderSVGResourcePattern.h"
36 #include "SVGNames.h"
37 #include "SVGRenderSupport.h"
38 #include "SVGSVGElement.h"
39 #include "SVGStyledTransformableElement.h"
40 #include "SVGTransformable.h"
41 #include "SVGUnitTypes.h"
42
43 namespace WebCore {
44
45 // Animated property definitions
DEFINE_ANIMATED_LENGTH(SVGPatternElement,SVGNames::xAttr,X,x)46 DEFINE_ANIMATED_LENGTH(SVGPatternElement, SVGNames::xAttr, X, x)
47 DEFINE_ANIMATED_LENGTH(SVGPatternElement, SVGNames::yAttr, Y, y)
48 DEFINE_ANIMATED_LENGTH(SVGPatternElement, SVGNames::widthAttr, Width, width)
49 DEFINE_ANIMATED_LENGTH(SVGPatternElement, SVGNames::heightAttr, Height, height)
50 DEFINE_ANIMATED_ENUMERATION(SVGPatternElement, SVGNames::patternUnitsAttr, PatternUnits, patternUnits)
51 DEFINE_ANIMATED_ENUMERATION(SVGPatternElement, SVGNames::patternContentUnitsAttr, PatternContentUnits, patternContentUnits)
52 DEFINE_ANIMATED_TRANSFORM_LIST(SVGPatternElement, SVGNames::patternTransformAttr, PatternTransform, patternTransform)
53 DEFINE_ANIMATED_STRING(SVGPatternElement, XLinkNames::hrefAttr, Href, href)
54 DEFINE_ANIMATED_BOOLEAN(SVGPatternElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
55 DEFINE_ANIMATED_RECT(SVGPatternElement, SVGNames::viewBoxAttr, ViewBox, viewBox)
56 DEFINE_ANIMATED_PRESERVEASPECTRATIO(SVGPatternElement, SVGNames::preserveAspectRatioAttr, PreserveAspectRatio, preserveAspectRatio)
57
58 inline SVGPatternElement::SVGPatternElement(const QualifiedName& tagName, Document* document)
59 : SVGStyledElement(tagName, document)
60 , m_x(LengthModeWidth)
61 , m_y(LengthModeHeight)
62 , m_width(LengthModeWidth)
63 , m_height(LengthModeHeight)
64 , m_patternUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
65 , m_patternContentUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
66 {
67 }
68
create(const QualifiedName & tagName,Document * document)69 PassRefPtr<SVGPatternElement> SVGPatternElement::create(const QualifiedName& tagName, Document* document)
70 {
71 return adoptRef(new SVGPatternElement(tagName, document));
72 }
73
parseMappedAttribute(Attribute * attr)74 void SVGPatternElement::parseMappedAttribute(Attribute* attr)
75 {
76 if (attr->name() == SVGNames::patternUnitsAttr) {
77 if (attr->value() == "userSpaceOnUse")
78 setPatternUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
79 else if (attr->value() == "objectBoundingBox")
80 setPatternUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
81 } else if (attr->name() == SVGNames::patternContentUnitsAttr) {
82 if (attr->value() == "userSpaceOnUse")
83 setPatternContentUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
84 else if (attr->value() == "objectBoundingBox")
85 setPatternContentUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
86 } else if (attr->name() == SVGNames::patternTransformAttr) {
87 SVGTransformList newList;
88 if (!SVGTransformable::parseTransformAttribute(newList, attr->value()))
89 newList.clear();
90
91 detachAnimatedPatternTransformListWrappers(newList.size());
92 setPatternTransformBaseValue(newList);
93 } else if (attr->name() == SVGNames::xAttr)
94 setXBaseValue(SVGLength(LengthModeWidth, attr->value()));
95 else if (attr->name() == SVGNames::yAttr)
96 setYBaseValue(SVGLength(LengthModeHeight, attr->value()));
97 else if (attr->name() == SVGNames::widthAttr) {
98 setWidthBaseValue(SVGLength(LengthModeWidth, attr->value()));
99 if (widthBaseValue().value(this) < 0.0)
100 document()->accessSVGExtensions()->reportError("A negative value for pattern attribute <width> is not allowed");
101 } else if (attr->name() == SVGNames::heightAttr) {
102 setHeightBaseValue(SVGLength(LengthModeHeight, attr->value()));
103 if (heightBaseValue().value(this) < 0.0)
104 document()->accessSVGExtensions()->reportError("A negative value for pattern attribute <height> is not allowed");
105 } else {
106 if (SVGURIReference::parseMappedAttribute(attr))
107 return;
108 if (SVGTests::parseMappedAttribute(attr))
109 return;
110 if (SVGLangSpace::parseMappedAttribute(attr))
111 return;
112 if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
113 return;
114 if (SVGFitToViewBox::parseMappedAttribute(document(), attr))
115 return;
116
117 SVGStyledElement::parseMappedAttribute(attr);
118 }
119 }
120
svgAttributeChanged(const QualifiedName & attrName)121 void SVGPatternElement::svgAttributeChanged(const QualifiedName& attrName)
122 {
123 SVGStyledElement::svgAttributeChanged(attrName);
124
125 bool invalidateClients = false;
126 if (attrName == SVGNames::xAttr
127 || attrName == SVGNames::yAttr
128 || attrName == SVGNames::widthAttr
129 || attrName == SVGNames::heightAttr) {
130 invalidateClients = true;
131 updateRelativeLengthsInformation();
132 }
133
134 RenderObject* object = renderer();
135 if (!object)
136 return;
137
138 if (invalidateClients
139 || attrName == SVGNames::patternUnitsAttr
140 || attrName == SVGNames::patternContentUnitsAttr
141 || attrName == SVGNames::patternTransformAttr
142 || SVGURIReference::isKnownAttribute(attrName)
143 || SVGTests::isKnownAttribute(attrName)
144 || SVGLangSpace::isKnownAttribute(attrName)
145 || SVGExternalResourcesRequired::isKnownAttribute(attrName)
146 || SVGFitToViewBox::isKnownAttribute(attrName)
147 || SVGStyledElement::isKnownAttribute(attrName))
148 object->setNeedsLayout(true);
149 }
150
synchronizeProperty(const QualifiedName & attrName)151 void SVGPatternElement::synchronizeProperty(const QualifiedName& attrName)
152 {
153 SVGStyledElement::synchronizeProperty(attrName);
154
155 if (attrName == anyQName()) {
156 synchronizePatternUnits();
157 synchronizePatternContentUnits();
158 synchronizePatternTransform();
159 synchronizeX();
160 synchronizeY();
161 synchronizeWidth();
162 synchronizeHeight();
163 synchronizeExternalResourcesRequired();
164 synchronizeViewBox();
165 synchronizePreserveAspectRatio();
166 synchronizeHref();
167 SVGTests::synchronizeProperties(this, attrName);
168 return;
169 }
170
171 if (attrName == SVGNames::patternUnitsAttr)
172 synchronizePatternUnits();
173 else if (attrName == SVGNames::patternContentUnitsAttr)
174 synchronizePatternContentUnits();
175 else if (attrName == SVGNames::patternTransformAttr)
176 synchronizePatternTransform();
177 else if (attrName == SVGNames::xAttr)
178 synchronizeX();
179 else if (attrName == SVGNames::yAttr)
180 synchronizeY();
181 else if (attrName == SVGNames::widthAttr)
182 synchronizeWidth();
183 else if (attrName == SVGNames::heightAttr)
184 synchronizeHeight();
185 else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
186 synchronizeExternalResourcesRequired();
187 else if (attrName == SVGNames::viewBoxAttr)
188 synchronizeViewBox();
189 else if (attrName == SVGNames::preserveAspectRatioAttr)
190 synchronizePreserveAspectRatio();
191 else if (SVGURIReference::isKnownAttribute(attrName))
192 synchronizeHref();
193 else if (SVGTests::isKnownAttribute(attrName))
194 SVGTests::synchronizeProperties(this, attrName);
195 }
196
attributeToPropertyTypeMap()197 AttributeToPropertyTypeMap& SVGPatternElement::attributeToPropertyTypeMap()
198 {
199 DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
200 return s_attributeToPropertyTypeMap;
201 }
202
fillAttributeToPropertyTypeMap()203 void SVGPatternElement::fillAttributeToPropertyTypeMap()
204 {
205 AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
206
207 SVGStyledElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
208 attributeToPropertyTypeMap.set(SVGNames::xAttr, AnimatedLength);
209 attributeToPropertyTypeMap.set(SVGNames::yAttr, AnimatedLength);
210 attributeToPropertyTypeMap.set(SVGNames::widthAttr, AnimatedLength);
211 attributeToPropertyTypeMap.set(SVGNames::heightAttr, AnimatedLength);
212 attributeToPropertyTypeMap.set(SVGNames::patternUnitsAttr, AnimatedEnumeration);
213 attributeToPropertyTypeMap.set(SVGNames::patternContentUnitsAttr, AnimatedEnumeration);
214 attributeToPropertyTypeMap.set(SVGNames::patternTransformAttr, AnimatedTransformList);
215 attributeToPropertyTypeMap.set(XLinkNames::hrefAttr, AnimatedString);
216 attributeToPropertyTypeMap.set(SVGNames::viewBoxAttr, AnimatedRect);
217 attributeToPropertyTypeMap.set(SVGNames::preserveAspectRatioAttr, AnimatedPreserveAspectRatio);
218 }
219
childrenChanged(bool changedByParser,Node * beforeChange,Node * afterChange,int childCountDelta)220 void SVGPatternElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
221 {
222 SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
223
224 if (changedByParser)
225 return;
226
227 if (RenderObject* object = renderer())
228 object->setNeedsLayout(true);
229 }
230
createRenderer(RenderArena * arena,RenderStyle *)231 RenderObject* SVGPatternElement::createRenderer(RenderArena* arena, RenderStyle*)
232 {
233 return new (arena) RenderSVGResourcePattern(this);
234 }
235
collectPatternAttributes(PatternAttributes & attributes) const236 void SVGPatternElement::collectPatternAttributes(PatternAttributes& attributes) const
237 {
238 HashSet<const SVGPatternElement*> processedPatterns;
239
240 const SVGPatternElement* current = this;
241 while (current) {
242 if (!attributes.hasX() && current->hasAttribute(SVGNames::xAttr))
243 attributes.setX(current->x());
244
245 if (!attributes.hasY() && current->hasAttribute(SVGNames::yAttr))
246 attributes.setY(current->y());
247
248 if (!attributes.hasWidth() && current->hasAttribute(SVGNames::widthAttr))
249 attributes.setWidth(current->width());
250
251 if (!attributes.hasHeight() && current->hasAttribute(SVGNames::heightAttr))
252 attributes.setHeight(current->height());
253
254 if (!attributes.hasViewBox() && current->hasAttribute(SVGNames::viewBoxAttr))
255 attributes.setViewBox(current->viewBox());
256
257 if (!attributes.hasPreserveAspectRatio() && current->hasAttribute(SVGNames::preserveAspectRatioAttr))
258 attributes.setPreserveAspectRatio(current->preserveAspectRatio());
259
260 if (!attributes.hasBoundingBoxMode() && current->hasAttribute(SVGNames::patternUnitsAttr))
261 attributes.setBoundingBoxMode(current->patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
262
263 if (!attributes.hasBoundingBoxModeContent() && current->hasAttribute(SVGNames::patternContentUnitsAttr))
264 attributes.setBoundingBoxModeContent(current->patternContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
265
266 if (!attributes.hasPatternTransform() && current->hasAttribute(SVGNames::patternTransformAttr)) {
267 AffineTransform transform;
268 current->patternTransform().concatenate(transform);
269 attributes.setPatternTransform(transform);
270 }
271
272 if (!attributes.hasPatternContentElement() && current->hasChildNodes())
273 attributes.setPatternContentElement(current);
274
275 processedPatterns.add(current);
276
277 // Respect xlink:href, take attributes from referenced element
278 Node* refNode = ownerDocument()->getElementById(SVGURIReference::getTarget(current->href()));
279 if (refNode && refNode->hasTagName(SVGNames::patternTag)) {
280 current = static_cast<const SVGPatternElement*>(const_cast<const Node*>(refNode));
281
282 // Cycle detection
283 if (processedPatterns.contains(current)) {
284 current = 0;
285 break;
286 }
287 } else
288 current = 0;
289 }
290 }
291
selfHasRelativeLengths() const292 bool SVGPatternElement::selfHasRelativeLengths() const
293 {
294 return x().isRelative()
295 || y().isRelative()
296 || width().isRelative()
297 || height().isRelative();
298 }
299
300 }
301
302 #endif // ENABLE(SVG)
303