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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 #if ENABLE(SVG) && ENABLE(FILTERS)
     24 #include "SVGFEBlendElement.h"
     25 
     26 #include "Attribute.h"
     27 #include "FilterEffect.h"
     28 #include "SVGFilterBuilder.h"
     29 #include "SVGNames.h"
     30 
     31 namespace WebCore {
     32 
     33 // Animated property definitions
     34 DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::inAttr, In1, in1)
     35 DEFINE_ANIMATED_STRING(SVGFEBlendElement, SVGNames::in2Attr, In2, in2)
     36 DEFINE_ANIMATED_ENUMERATION(SVGFEBlendElement, SVGNames::modeAttr, Mode, mode)
     37 
     38 inline SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document* document)
     39     : SVGFilterPrimitiveStandardAttributes(tagName, document)
     40     , m_mode(FEBLEND_MODE_NORMAL)
     41 {
     42 }
     43 
     44 PassRefPtr<SVGFEBlendElement> SVGFEBlendElement::create(const QualifiedName& tagName, Document* document)
     45 {
     46     return adoptRef(new SVGFEBlendElement(tagName, document));
     47 }
     48 
     49 void SVGFEBlendElement::parseMappedAttribute(Attribute* attr)
     50 {
     51     const String& value = attr->value();
     52     if (attr->name() == SVGNames::modeAttr) {
     53         if (value == "normal")
     54             setModeBaseValue(FEBLEND_MODE_NORMAL);
     55         else if (value == "multiply")
     56             setModeBaseValue(FEBLEND_MODE_MULTIPLY);
     57         else if (value == "screen")
     58             setModeBaseValue(FEBLEND_MODE_SCREEN);
     59         else if (value == "darken")
     60             setModeBaseValue(FEBLEND_MODE_DARKEN);
     61         else if (value == "lighten")
     62             setModeBaseValue(FEBLEND_MODE_LIGHTEN);
     63     } else if (attr->name() == SVGNames::inAttr)
     64         setIn1BaseValue(value);
     65     else if (attr->name() == SVGNames::in2Attr)
     66         setIn2BaseValue(value);
     67     else
     68         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     69 }
     70 
     71 bool SVGFEBlendElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
     72 {
     73     FEBlend* blend = static_cast<FEBlend*>(effect);
     74     if (attrName == SVGNames::modeAttr)
     75         return blend->setBlendMode(static_cast<BlendModeType>(mode()));
     76 
     77     ASSERT_NOT_REACHED();
     78     return false;
     79 }
     80 
     81 void SVGFEBlendElement::svgAttributeChanged(const QualifiedName& attrName)
     82 {
     83     SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
     84 
     85     if (attrName == SVGNames::modeAttr)
     86         primitiveAttributeChanged(attrName);
     87 
     88     if (attrName == SVGNames::inAttr
     89         || attrName == SVGNames::in2Attr)
     90         invalidate();
     91 }
     92 
     93 void SVGFEBlendElement::synchronizeProperty(const QualifiedName& attrName)
     94 {
     95     SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
     96 
     97     if (attrName == anyQName()) {
     98         synchronizeMode();
     99         synchronizeIn1();
    100         synchronizeIn2();
    101         return;
    102     }
    103 
    104     if (attrName == SVGNames::modeAttr)
    105         synchronizeMode();
    106     else if (attrName == SVGNames::inAttr)
    107         synchronizeIn1();
    108     else if (attrName == SVGNames::in2Attr)
    109         synchronizeIn2();
    110 }
    111 
    112 AttributeToPropertyTypeMap& SVGFEBlendElement::attributeToPropertyTypeMap()
    113 {
    114     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    115     return s_attributeToPropertyTypeMap;
    116 }
    117 
    118 void SVGFEBlendElement::fillAttributeToPropertyTypeMap()
    119 {
    120     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    121 
    122     SVGFilterPrimitiveStandardAttributes::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    123     attributeToPropertyTypeMap.set(SVGNames::inAttr, AnimatedString);
    124     attributeToPropertyTypeMap.set(SVGNames::in2Attr, AnimatedString);
    125     attributeToPropertyTypeMap.set(SVGNames::modeAttr, AnimatedEnumeration);
    126 }
    127 
    128 PassRefPtr<FilterEffect> SVGFEBlendElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
    129 {
    130     FilterEffect* input1 = filterBuilder->getEffectById(in1());
    131     FilterEffect* input2 = filterBuilder->getEffectById(in2());
    132 
    133     if (!input1 || !input2)
    134         return 0;
    135 
    136     RefPtr<FilterEffect> effect = FEBlend::create(filter, static_cast<BlendModeType>(mode()));
    137     FilterEffectVector& inputEffects = effect->inputEffects();
    138     inputEffects.reserveCapacity(2);
    139     inputEffects.append(input1);
    140     inputEffects.append(input2);
    141     return effect.release();
    142 }
    143 
    144 }
    145 
    146 #endif // ENABLE(SVG)
    147 
    148 // vim:ts=4:noet
    149