1/*
2 * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
5 * Copyright (C) 2018-2019 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#include "config.h"
24#include "SVGFEBlendElement.h"
25
26#include "FEBlend.h"
27#include "FilterEffect.h"
28#include "SVGFilterBuilder.h"
29#include "SVGNames.h"
30#include <wtf/IsoMallocInlines.h>
31
32namespace WebCore {
33
34WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFEBlendElement);
35
36inline SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document& document)
37 : SVGFilterPrimitiveStandardAttributes(tagName, document)
38{
39 ASSERT(hasTagName(SVGNames::feBlendTag));
40
41 static std::once_flag onceFlag;
42 std::call_once(onceFlag, [] {
43 PropertyRegistry::registerProperty<SVGNames::modeAttr, BlendMode, &SVGFEBlendElement::m_mode>();
44 PropertyRegistry::registerProperty<SVGNames::inAttr, &SVGFEBlendElement::m_in1>();
45 PropertyRegistry::registerProperty<SVGNames::in2Attr, &SVGFEBlendElement::m_in2>();
46 });
47}
48
49Ref<SVGFEBlendElement> SVGFEBlendElement::create(const QualifiedName& tagName, Document& document)
50{
51 return adoptRef(*new SVGFEBlendElement(tagName, document));
52}
53
54void SVGFEBlendElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
55{
56 if (name == SVGNames::modeAttr) {
57 BlendMode mode = BlendMode::Normal;
58 if (parseBlendMode(value, mode))
59 m_mode->setBaseValInternal<BlendMode>(mode);
60 return;
61 }
62
63 if (name == SVGNames::inAttr) {
64 m_in1->setBaseValInternal(value);
65 return;
66 }
67
68 if (name == SVGNames::in2Attr) {
69 m_in2->setBaseValInternal(value);
70 return;
71 }
72
73 SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
74}
75
76bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
77{
78 FEBlend* blend = static_cast<FEBlend*>(effect);
79 if (attrName == SVGNames::modeAttr)
80 return blend->setBlendMode(mode());
81
82 ASSERT_NOT_REACHED();
83 return false;
84}
85
86void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
87{
88 if (attrName == SVGNames::modeAttr) {
89 InstanceInvalidationGuard guard(*this);
90 primitiveAttributeChanged(attrName);
91 return;
92 }
93
94 if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
95 InstanceInvalidationGuard guard(*this);
96 invalidate();
97 return;
98 }
99
100 SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
101}
102
103RefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter& filter) const
104{
105 auto input1 = filterBuilder->getEffectById(in1());
106 auto input2 = filterBuilder->getEffectById(in2());
107
108 if (!input1 || !input2)
109 return nullptr;
110
111 auto effect = FEBlend::create(filter, mode());
112 FilterEffectVector& inputEffects = effect->inputEffects();
113 inputEffects.reserveCapacity(2);
114 inputEffects.append(input1);
115 inputEffects.append(input2);
116 return effect;
117}
118
119}
120