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      1 /*
      2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis (at) 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 "SVGNames.h"
     26 #include "core/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
     33 DEFINE_ANIMATED_STRING(SVGFECompositeElement, SVGNames::inAttr, In1, in1)
     34 DEFINE_ANIMATED_STRING(SVGFECompositeElement, SVGNames::in2Attr, In2, in2)
     35 DEFINE_ANIMATED_ENUMERATION(SVGFECompositeElement, SVGNames::operatorAttr, SVGOperator, svgOperator, CompositeOperationType)
     36 DEFINE_ANIMATED_NUMBER(SVGFECompositeElement, SVGNames::k1Attr, K1, k1)
     37 DEFINE_ANIMATED_NUMBER(SVGFECompositeElement, SVGNames::k2Attr, K2, k2)
     38 DEFINE_ANIMATED_NUMBER(SVGFECompositeElement, SVGNames::k3Attr, K3, k3)
     39 DEFINE_ANIMATED_NUMBER(SVGFECompositeElement, SVGNames::k4Attr, K4, k4)
     40 
     41 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFECompositeElement)
     42     REGISTER_LOCAL_ANIMATED_PROPERTY(in1)
     43     REGISTER_LOCAL_ANIMATED_PROPERTY(in2)
     44     REGISTER_LOCAL_ANIMATED_PROPERTY(svgOperator)
     45     REGISTER_LOCAL_ANIMATED_PROPERTY(k1)
     46     REGISTER_LOCAL_ANIMATED_PROPERTY(k2)
     47     REGISTER_LOCAL_ANIMATED_PROPERTY(k3)
     48     REGISTER_LOCAL_ANIMATED_PROPERTY(k4)
     49     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
     50 END_REGISTER_ANIMATED_PROPERTIES
     51 
     52 inline SVGFECompositeElement::SVGFECompositeElement(const QualifiedName& tagName, Document* document)
     53     : SVGFilterPrimitiveStandardAttributes(tagName, document)
     54     , m_svgOperator(FECOMPOSITE_OPERATOR_OVER)
     55 {
     56     ASSERT(hasTagName(SVGNames::feCompositeTag));
     57     ScriptWrappable::init(this);
     58     registerAnimatedPropertiesForSVGFECompositeElement();
     59 }
     60 
     61 PassRefPtr<SVGFECompositeElement> SVGFECompositeElement::create(const QualifiedName& tagName, Document* document)
     62 {
     63     return adoptRef(new SVGFECompositeElement(tagName, document));
     64 }
     65 
     66 bool SVGFECompositeElement::isSupportedAttribute(const QualifiedName& attrName)
     67 {
     68     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     69     if (supportedAttributes.isEmpty()) {
     70         supportedAttributes.add(SVGNames::inAttr);
     71         supportedAttributes.add(SVGNames::in2Attr);
     72         supportedAttributes.add(SVGNames::operatorAttr);
     73         supportedAttributes.add(SVGNames::k1Attr);
     74         supportedAttributes.add(SVGNames::k2Attr);
     75         supportedAttributes.add(SVGNames::k3Attr);
     76         supportedAttributes.add(SVGNames::k4Attr);
     77     }
     78     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
     79 }
     80 
     81 void SVGFECompositeElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     82 {
     83     if (!isSupportedAttribute(name)) {
     84         SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
     85         return;
     86     }
     87 
     88     if (name == SVGNames::operatorAttr) {
     89         CompositeOperationType propertyValue = SVGPropertyTraits<CompositeOperationType>::fromString(value);
     90         if (propertyValue > 0)
     91             setSVGOperatorBaseValue(propertyValue);
     92         return;
     93     }
     94 
     95     if (name == SVGNames::inAttr) {
     96         setIn1BaseValue(value);
     97         return;
     98     }
     99 
    100     if (name == SVGNames::in2Attr) {
    101         setIn2BaseValue(value);
    102         return;
    103     }
    104 
    105     if (name == SVGNames::k1Attr) {
    106         setK1BaseValue(value.toFloat());
    107         return;
    108     }
    109 
    110     if (name == SVGNames::k2Attr) {
    111         setK2BaseValue(value.toFloat());
    112         return;
    113     }
    114 
    115     if (name == SVGNames::k3Attr) {
    116         setK3BaseValue(value.toFloat());
    117         return;
    118     }
    119 
    120     if (name == SVGNames::k4Attr) {
    121         setK4BaseValue(value.toFloat());
    122         return;
    123     }
    124 
    125     ASSERT_NOT_REACHED();
    126 }
    127 
    128 bool SVGFECompositeElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
    129 {
    130     FEComposite* composite = static_cast<FEComposite*>(effect);
    131     if (attrName == SVGNames::operatorAttr)
    132         return composite->setOperation(svgOperatorCurrentValue());
    133     if (attrName == SVGNames::k1Attr)
    134         return composite->setK1(k1CurrentValue());
    135     if (attrName == SVGNames::k2Attr)
    136         return composite->setK2(k2CurrentValue());
    137     if (attrName == SVGNames::k3Attr)
    138         return composite->setK3(k3CurrentValue());
    139     if (attrName == SVGNames::k4Attr)
    140         return composite->setK4(k4CurrentValue());
    141 
    142     ASSERT_NOT_REACHED();
    143     return false;
    144 }
    145 
    146 
    147 void SVGFECompositeElement::svgAttributeChanged(const QualifiedName& attrName)
    148 {
    149     if (!isSupportedAttribute(attrName)) {
    150         SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
    151         return;
    152     }
    153 
    154     SVGElementInstance::InvalidationGuard invalidationGuard(this);
    155 
    156     if (attrName == SVGNames::operatorAttr
    157         || attrName == SVGNames::k1Attr
    158         || attrName == SVGNames::k2Attr
    159         || attrName == SVGNames::k3Attr
    160         || attrName == SVGNames::k4Attr) {
    161         primitiveAttributeChanged(attrName);
    162         return;
    163     }
    164 
    165     if (attrName == SVGNames::inAttr || attrName == SVGNames::in2Attr) {
    166         invalidate();
    167         return;
    168     }
    169 
    170     ASSERT_NOT_REACHED();
    171 }
    172 
    173 PassRefPtr<FilterEffect> SVGFECompositeElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
    174 {
    175     FilterEffect* input1 = filterBuilder->getEffectById(in1CurrentValue());
    176     FilterEffect* input2 = filterBuilder->getEffectById(in2CurrentValue());
    177 
    178     if (!input1 || !input2)
    179         return 0;
    180 
    181     RefPtr<FilterEffect> effect = FEComposite::create(filter, svgOperatorCurrentValue(), k1CurrentValue(), k2CurrentValue(), k3CurrentValue(), k4CurrentValue());
    182     FilterEffectVector& inputEffects = effect->inputEffects();
    183     inputEffects.reserveCapacity(2);
    184     inputEffects.append(input1);
    185     inputEffects.append(input2);
    186     return effect.release();
    187 }
    188 
    189 }
    190