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      1 /*
      2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3                   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 "SVGFEOffsetElement.h"
     25 
     26 #include "Attr.h"
     27 #include "MappedAttribute.h"
     28 #include "SVGResourceFilter.h"
     29 
     30 namespace WebCore {
     31 
     32 SVGFEOffsetElement::SVGFEOffsetElement(const QualifiedName& tagName, Document* doc)
     33     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
     34 {
     35 }
     36 
     37 SVGFEOffsetElement::~SVGFEOffsetElement()
     38 {
     39 }
     40 
     41 void SVGFEOffsetElement::parseMappedAttribute(MappedAttribute* attr)
     42 {
     43     const String& value = attr->value();
     44     if (attr->name() == SVGNames::dxAttr)
     45         setDxBaseValue(value.toFloat());
     46     else if (attr->name() == SVGNames::dyAttr)
     47         setDyBaseValue(value.toFloat());
     48     else if (attr->name() == SVGNames::inAttr)
     49         setIn1BaseValue(value);
     50     else
     51         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     52 }
     53 
     54 void SVGFEOffsetElement::synchronizeProperty(const QualifiedName& attrName)
     55 {
     56     SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
     57 
     58     if (attrName == anyQName()) {
     59         synchronizeDx();
     60         synchronizeDy();
     61         synchronizeIn1();
     62         return;
     63     }
     64 
     65     if (attrName == SVGNames::dxAttr)
     66         synchronizeDx();
     67     else if (attrName == SVGNames::dyAttr)
     68         synchronizeDy();
     69     else if (attrName == SVGNames::inAttr)
     70         synchronizeIn1();
     71 }
     72 
     73 bool SVGFEOffsetElement::build(SVGResourceFilter* filterResource)
     74 {
     75     FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
     76 
     77     if (!input1)
     78         return false;
     79 
     80     RefPtr<FilterEffect> effect = FEOffset::create(input1, dx(), dy());
     81     filterResource->addFilterEffect(this, effect.release());
     82 
     83     return true;
     84 }
     85 
     86 }
     87 
     88 #endif // ENABLE(SVG)
     89