third_party/WebKit/Source/core/svg/SVGFECompositeElement.cpp

   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/SVGFECompositeElement.h"
  24
  25 #include "core/SVGNames.h"
  26 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
  27 #include "platform/graphics/filters/FilterEffect.h"
  28
  29 namespace blink {
  30
  31 template<> const SVGEnumerationStringEntries& getStaticStringEntries<CompositeOperationType>()
  32 {
  33     DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
  34     if (entries.isEmpty()) {
  35         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_OVER, "over"));
  36         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_IN, "in"));
  37         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_OUT, "out"));
  38         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_ATOP, "atop"));
  39         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_XOR, "xor"));
  40         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_ARITHMETIC, "arithmetic"));
  41         entries.append(std::make_pair(FECOMPOSITE_OPERATOR_LIGHTER, "lighter"));
  42     }
  43     return entries;
  44 }
  45
  46 template<> unsigned short getMaxExposedEnumValue<CompositeOperationType>()
  47 {
  48     return FECOMPOSITE_OPERATOR_ARITHMETIC;
  49 }
  50
  51 inline SVGFECompositeElement::SVGFECompositeElement(Document& document)
  52     : SVGFilterPrimitiveStandardAttributes(SVGNames::feCompositeTag, document)
  53     , m_k1(SVGAnimatedNumber::create(this, SVGNames::k1Attr, SVGNumber::create()))
  54     , m_k2(SVGAnimatedNumber::create(this, SVGNames::k2Attr, SVGNumber::create()))
  55     , m_k3(SVGAnimatedNumber::create(this, SVGNames::k3Attr, SVGNumber::create()))
  56     , m_k4(SVGAnimatedNumber::create(this, SVGNames::k4Attr, SVGNumber::create()))
  57     , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
  58     , m_in2(SVGAnimatedString::create(this, SVGNames::in2Attr, SVGString::create()))
  59     , m_svgOperator(SVGAnimatedEnumeration<CompositeOperationType>::create(this, SVGNames::operatorAttr, FECOMPOSITE_OPERATOR_OVER))
  60 {
  61     addToPropertyMap(m_k1);
  62     addToPropertyMap(m_k2);
  63     addToPropertyMap(m_k3);
  64     addToPropertyMap(m_k4);
  65     addToPropertyMap(m_in1);
  66     addToPropertyMap(m_in2);
  67     addToPropertyMap(m_svgOperator);
  68 }
  69
  70 DEFINE_TRACE(SVGFECompositeElement)
  71 {
  72     visitor->trace(m_k1);
  73     visitor->trace(m_k2);
  74     visitor->trace(m_k3);
  75     visitor->trace(m_k4);
  76     visitor->trace(m_in1);
  77     visitor->trace(m_in2);
  78     visitor->trace(m_svgOperator);
  79     SVGFilterPrimitiveStandardAttributes::trace(visitor);
  80 }
  81
  82 DEFINE_NODE_FACTORY(SVGFECompositeElement)
  83
  84 bool SVGFECompositeElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
  85 {
  86     FEComposite* composite = static_cast<FEComposite*>(effect);
  87     if (attrName == SVGNames::operatorAttr)
  88         return composite->setOperation(m_svgOperator->currentValue()->enumValue());
  89     if (attrName == SVGNames::k1Attr)
  90         return composite->setK1(m_k1->currentValue()->value());
  91     if (attrName == SVGNames::k2Attr)
  92         return composite->setK2(m_k2->currentValue()->value());
  93     if (attrName == SVGNames::k3Attr)
  94         return composite->setK3(m_k3->currentValue()->value());
  95     if (attrName == SVGNames::k4Attr)
  96         return composite->setK4(m_k4->currentValue()->value());
  97
  98     ASSERT_NOT_REACHED();
  99     return false;
 100 }
 101
 102
 103 void SVGFECompositeElement::svgAttributeChanged(const QualifiedName& attrName)
 104 {
 105     if (attrName == SVGNames::operatorAttr
 106         || attrName == SVGNames::k1Attr
 107         || attrName == SVGNames::k2Attr
 108         || attrName == SVGNames::k3Attr
 109         || attrName == SVGNames::k4Attr) {
 110         SVGElement::InvalidationGuard invalidationGuard(this);
 111         primitiveAttributeChanged(attrName);
 112         return;
 113     }
 114
 115     if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
 116         SVGElement::InvalidationGuard invalidationGuard(this);
 117         invalidate();
 118         return;
 119     }
 120
 121     SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
 122 }
 123
 124 PassRefPtrWillBeRawPtr<FilterEffect> SVGFECompositeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 125 {
 126     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
 127     FilterEffect* input2 = filterBuilder->getEffectById(AtomicString(m_in2->currentValue()->value()));
 128
 129     if (!input1 || !input2)
 130         return nullptr;
 131
 132     RefPtrWillBeRawPtr<FilterEffect> effect = FEComposite::create(filter, m_svgOperator->currentValue()->enumValue(), m_k1->currentValue()->value(), m_k2->currentValue()->value(), m_k3->currentValue()->value(), m_k4->currentValue()->value());
 133     FilterEffectVector& inputEffects = effect->inputEffects();
 134     inputEffects.reserveCapacity(2);
 135     inputEffects.append(input1);
 136     inputEffects.append(input2);
 137     return effect.release();
 138 }
 139
 140 } // namespace blink