1 /*
2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
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) && ENABLE(FILTERS)
25 #include "SVGFilterPrimitiveStandardAttributes.h"
26
27 #include "Attribute.h"
28 #include "FilterEffect.h"
29 #include "RenderSVGResourceFilterPrimitive.h"
30 #include "SVGFilterBuilder.h"
31 #include "SVGLength.h"
32 #include "SVGNames.h"
33 #include "SVGStyledElement.h"
34 #include "SVGUnitTypes.h"
35
36 namespace WebCore {
37
38 // Animated property definitions
DEFINE_ANIMATED_LENGTH(SVGFilterPrimitiveStandardAttributes,SVGNames::xAttr,X,x)39 DEFINE_ANIMATED_LENGTH(SVGFilterPrimitiveStandardAttributes, SVGNames::xAttr, X, x)
40 DEFINE_ANIMATED_LENGTH(SVGFilterPrimitiveStandardAttributes, SVGNames::yAttr, Y, y)
41 DEFINE_ANIMATED_LENGTH(SVGFilterPrimitiveStandardAttributes, SVGNames::widthAttr, Width, width)
42 DEFINE_ANIMATED_LENGTH(SVGFilterPrimitiveStandardAttributes, SVGNames::heightAttr, Height, height)
43 DEFINE_ANIMATED_STRING(SVGFilterPrimitiveStandardAttributes, SVGNames::resultAttr, Result, result)
44
45 SVGFilterPrimitiveStandardAttributes::SVGFilterPrimitiveStandardAttributes(const QualifiedName& tagName, Document* document)
46 : SVGStyledElement(tagName, document)
47 , m_x(LengthModeWidth, "0%")
48 , m_y(LengthModeHeight, "0%")
49 , m_width(LengthModeWidth, "100%")
50 , m_height(LengthModeHeight, "100%")
51 {
52 // Spec: If the x/y attribute is not specified, the effect is as if a value of "0%" were specified.
53 // Spec: If the width/height attribute is not specified, the effect is as if a value of "100%" were specified.
54 }
55
parseMappedAttribute(Attribute * attr)56 void SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(Attribute* attr)
57 {
58 const AtomicString& value = attr->value();
59 if (attr->name() == SVGNames::xAttr)
60 setXBaseValue(SVGLength(LengthModeWidth, value));
61 else if (attr->name() == SVGNames::yAttr)
62 setYBaseValue(SVGLength(LengthModeHeight, value));
63 else if (attr->name() == SVGNames::widthAttr)
64 setWidthBaseValue(SVGLength(LengthModeWidth, value));
65 else if (attr->name() == SVGNames::heightAttr)
66 setHeightBaseValue(SVGLength(LengthModeHeight, value));
67 else if (attr->name() == SVGNames::resultAttr)
68 setResultBaseValue(value);
69 else
70 return SVGStyledElement::parseMappedAttribute(attr);
71 }
72
setFilterEffectAttribute(FilterEffect *,const QualifiedName &)73 bool SVGFilterPrimitiveStandardAttributes::setFilterEffectAttribute(FilterEffect*, const QualifiedName&)
74 {
75 // When all filters support this method, it will be changed to a pure virtual method.
76 ASSERT_NOT_REACHED();
77 return false;
78 }
79
svgAttributeChanged(const QualifiedName & attrName)80 void SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(const QualifiedName& attrName)
81 {
82 SVGStyledElement::svgAttributeChanged(attrName);
83
84 if (attrName == SVGNames::xAttr
85 || attrName == SVGNames::yAttr
86 || attrName == SVGNames::widthAttr
87 || attrName == SVGNames::heightAttr
88 || attrName == SVGNames::resultAttr)
89 invalidate();
90 }
91
synchronizeProperty(const QualifiedName & attrName)92 void SVGFilterPrimitiveStandardAttributes::synchronizeProperty(const QualifiedName& attrName)
93 {
94 SVGStyledElement::synchronizeProperty(attrName);
95
96 if (attrName == anyQName()) {
97 synchronizeX();
98 synchronizeY();
99 synchronizeWidth();
100 synchronizeHeight();
101 synchronizeResult();
102 return;
103 }
104
105 if (attrName == SVGNames::xAttr)
106 synchronizeX();
107 else if (attrName == SVGNames::yAttr)
108 synchronizeY();
109 else if (attrName == SVGNames::widthAttr)
110 synchronizeWidth();
111 else if (attrName == SVGNames::heightAttr)
112 synchronizeHeight();
113 else if (attrName == SVGNames::resultAttr)
114 synchronizeResult();
115 }
116
childrenChanged(bool changedByParser,Node * beforeChange,Node * afterChange,int childCountDelta)117 void SVGFilterPrimitiveStandardAttributes::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
118 {
119 SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
120
121 if (!changedByParser)
122 invalidate();
123 }
124
setStandardAttributes(bool primitiveBoundingBoxMode,FilterEffect * filterEffect) const125 void SVGFilterPrimitiveStandardAttributes::setStandardAttributes(bool primitiveBoundingBoxMode, FilterEffect* filterEffect) const
126 {
127 ASSERT(filterEffect);
128 if (!filterEffect)
129 return;
130
131 if (this->hasAttribute(SVGNames::xAttr))
132 filterEffect->setHasX(true);
133 if (this->hasAttribute(SVGNames::yAttr))
134 filterEffect->setHasY(true);
135 if (this->hasAttribute(SVGNames::widthAttr))
136 filterEffect->setHasWidth(true);
137 if (this->hasAttribute(SVGNames::heightAttr))
138 filterEffect->setHasHeight(true);
139
140 FloatRect effectBBox;
141 if (primitiveBoundingBoxMode)
142 effectBBox = FloatRect(x().valueAsPercentage(),
143 y().valueAsPercentage(),
144 width().valueAsPercentage(),
145 height().valueAsPercentage());
146 else
147 effectBBox = FloatRect(x().value(this),
148 y().value(this),
149 width().value(this),
150 height().value(this));
151
152 filterEffect->setEffectBoundaries(effectBBox);
153 }
154
fillPassedAttributeToPropertyTypeMap(AttributeToPropertyTypeMap & attributeToPropertyTypeMap)155 void SVGFilterPrimitiveStandardAttributes::fillPassedAttributeToPropertyTypeMap(AttributeToPropertyTypeMap& attributeToPropertyTypeMap)
156 {
157 SVGStyledElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
158
159 attributeToPropertyTypeMap.set(SVGNames::xAttr, AnimatedLength);
160 attributeToPropertyTypeMap.set(SVGNames::yAttr, AnimatedLength);
161 attributeToPropertyTypeMap.set(SVGNames::widthAttr, AnimatedLength);
162 attributeToPropertyTypeMap.set(SVGNames::heightAttr, AnimatedLength);
163 attributeToPropertyTypeMap.set(SVGNames::resultAttr, AnimatedString);
164 }
165
createRenderer(RenderArena * arena,RenderStyle *)166 RenderObject* SVGFilterPrimitiveStandardAttributes::createRenderer(RenderArena* arena, RenderStyle*)
167 {
168 return new (arena) RenderSVGResourceFilterPrimitive(this);
169 }
170
rendererIsNeeded(RenderStyle * style)171 bool SVGFilterPrimitiveStandardAttributes::rendererIsNeeded(RenderStyle* style)
172 {
173 if (parentNode() && (parentNode()->hasTagName(SVGNames::filterTag)))
174 return SVGStyledElement::rendererIsNeeded(style);
175
176 return false;
177 }
178
179 }
180
181 #endif // ENABLE(SVG)
182