1 /*
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #include "config.h"
22
23 #include "core/svg/SVGFEBlendElement.h"
24
25 #include "SVGNames.h"
26 #include "platform/graphics/filters/FilterEffect.h"
27 #include "core/svg/SVGElementInstance.h"
28 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
29
30 namespace WebCore {
31
32 // Animated property definitions
DEFINE_ANIMATED_STRING(SVGFEBlendElement,SVGNames::inAttr,In1,in1)33 DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::inAttr, In1, in1)
34 DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::in2Attr, In2, in2)
35 DEFINE_ANIMATED_ENUMERATION(SVGFEBlendElement, SVGNames::modeAttr, Mode, mode, BlendModeType)
36
37 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEBlendElement)
38 REGISTER_LOCAL_ANIMATED_PROPERTY(in1)
39 REGISTER_LOCAL_ANIMATED_PROPERTY(in2)
40 REGISTER_LOCAL_ANIMATED_PROPERTY(mode)
41 REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
42 END_REGISTER_ANIMATED_PROPERTIES
43
44 inline SVGFEBlendElement::SVGFEBlendElement(Document& document)
45 : SVGFilterPrimitiveStandardAttributes(SVGNames::feBlendTag, document)
46 , m_mode(FEBLEND_MODE_NORMAL)
47 {
48 ScriptWrappable::init(this);
49 registerAnimatedPropertiesForSVGFEBlendElement();
50 }
51
create(Document & document)52 PassRefPtr<SVGFEBlendElement> SVGFEBlendElement::create(Document& document)
53 {
54 return adoptRef(new SVGFEBlendElement(document));
55 }
56
isSupportedAttribute(const QualifiedName & attrName)57 bool SVGFEBlendElement::isSupportedAttribute(const QualifiedName& attrName)
58 {
59 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
60 if (supportedAttributes.isEmpty()) {
61 supportedAttributes.add(SVGNames::modeAttr);
62 supportedAttributes.add(SVGNames::inAttr);
63 supportedAttributes.add(SVGNames::in2Attr);
64 }
65 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
66 }
67
parseAttribute(const QualifiedName & name,const AtomicString & value)68 void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
69 {
70 if (!isSupportedAttribute(name)) {
71 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
72 return;
73 }
74
75 if (name == SVGNames::modeAttr) {
76 BlendModeType propertyValue = SVGPropertyTraits<BlendModeType>::fromString(value);
77 if (propertyValue > 0)
78 setModeBaseValue(propertyValue);
79 return;
80 }
81
82 if (name == SVGNames::inAttr) {
83 setIn1BaseValue(value);
84 return;
85 }
86
87 if (name == SVGNames::in2Attr) {
88 setIn2BaseValue(value);
89 return;
90 }
91
92 ASSERT_NOT_REACHED();
93 }
94
setFilterEffectAttribute(FilterEffect * effect,const QualifiedName & attrName)95 bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
96 {
97 FEBlend* blend = static_cast<FEBlend*>(effect);
98 if (attrName == SVGNames::modeAttr)
99 return blend->setBlendMode(modeCurrentValue());
100
101 ASSERT_NOT_REACHED();
102 return false;
103 }
104
svgAttributeChanged(const QualifiedName & attrName)105 void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
106 {
107 if (!isSupportedAttribute(attrName)) {
108 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
109 return;
110 }
111
112 SVGElementInstance::InvalidationGuard invalidationGuard(this);
113
114 if (attrName == SVGNames::modeAttr) {
115 primitiveAttributeChanged(attrName);
116 return;
117 }
118
119 if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
120 invalidate();
121 return;
122 }
123
124 ASSERT_NOT_REACHED();
125 }
126
build(SVGFilterBuilder * filterBuilder,Filter * filter)127 PassRefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
128 {
129 FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue());
130 FilterEffect* input2 = filterBuilder->getEffectById(in2CurrentValue());
131
132 if (!input1 || !input2)
133 return 0;
134
135 RefPtr<FilterEffect> effect = FEBlend::create(filter, modeCurrentValue());
136 FilterEffectVector& inputEffects = effect->inputEffects();
137 inputEffects.reserveCapacity(2);
138 inputEffects.append(input1);
139 inputEffects.append(input2);
140 return effect.release();
141 }
142
143 }
144