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      1 /*
      2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005 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 "SVGFEComponentTransferElement.h"
     25 
     26 #include "Attr.h"
     27 #include "FilterEffect.h"
     28 #include "SVGFEFuncAElement.h"
     29 #include "SVGFEFuncBElement.h"
     30 #include "SVGFEFuncGElement.h"
     31 #include "SVGFEFuncRElement.h"
     32 #include "SVGFilterBuilder.h"
     33 #include "SVGNames.h"
     34 
     35 namespace WebCore {
     36 
     37 // Animated property declarations
     38 DEFINE_ANIMATED_STRING(SVGFEComponentTransferElement, SVGNames::inAttr, In1, in1)
     39 
     40 inline SVGFEComponentTransferElement::SVGFEComponentTransferElement(const QualifiedName& tagName, Document* document)
     41     : SVGFilterPrimitiveStandardAttributes(tagName, document)
     42 {
     43 }
     44 
     45 PassRefPtr<SVGFEComponentTransferElement> SVGFEComponentTransferElement::create(const QualifiedName& tagName, Document* document)
     46 {
     47     return adoptRef(new SVGFEComponentTransferElement(tagName, document));
     48 }
     49 
     50 void SVGFEComponentTransferElement::parseMappedAttribute(Attribute* attr)
     51 {
     52     const String& value = attr->value();
     53     if (attr->name() == SVGNames::inAttr)
     54         setIn1BaseValue(value);
     55     else
     56         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     57 }
     58 
     59 void SVGFEComponentTransferElement::synchronizeProperty(const QualifiedName& attrName)
     60 {
     61     SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
     62 
     63     if (attrName == anyQName() || attrName == SVGNames::inAttr)
     64         synchronizeIn1();
     65 }
     66 
     67 AttributeToPropertyTypeMap& SVGFEComponentTransferElement::attributeToPropertyTypeMap()
     68 {
     69     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
     70     return s_attributeToPropertyTypeMap;
     71 }
     72 
     73 void SVGFEComponentTransferElement::fillAttributeToPropertyTypeMap()
     74 {
     75     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
     76 
     77     SVGFilterPrimitiveStandardAttributes::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
     78     attributeToPropertyTypeMap.set(SVGNames::inAttr, AnimatedString);
     79 }
     80 
     81 PassRefPtr<FilterEffect> SVGFEComponentTransferElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
     82 {
     83     FilterEffect* input1 = filterBuilder->getEffectById(in1());
     84 
     85     if (!input1)
     86         return 0;
     87 
     88     ComponentTransferFunction red;
     89     ComponentTransferFunction green;
     90     ComponentTransferFunction blue;
     91     ComponentTransferFunction alpha;
     92 
     93     for (Node* node = firstChild(); node; node = node->nextSibling()) {
     94         if (node->hasTagName(SVGNames::feFuncRTag))
     95             red = static_cast<SVGFEFuncRElement*>(node)->transferFunction();
     96         else if (node->hasTagName(SVGNames::feFuncGTag))
     97             green = static_cast<SVGFEFuncGElement*>(node)->transferFunction();
     98         else if (node->hasTagName(SVGNames::feFuncBTag))
     99            blue = static_cast<SVGFEFuncBElement*>(node)->transferFunction();
    100         else if (node->hasTagName(SVGNames::feFuncATag))
    101             alpha = static_cast<SVGFEFuncAElement*>(node)->transferFunction();
    102     }
    103 
    104     RefPtr<FilterEffect> effect = FEComponentTransfer::create(filter, red, green, blue, alpha);
    105     effect->inputEffects().append(input1);
    106     return effect.release();
    107 }
    108 
    109 }
    110 
    111 #endif
    112