WebCore/svg/SVGFEOffsetElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005 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 #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     , m_in1(this, SVGNames::inAttr)
  35     , m_dx(this, SVGNames::dxAttr)
  36     , m_dy(this, SVGNames::dyAttr)
  37 {
  38 }
  39
  40 SVGFEOffsetElement::~SVGFEOffsetElement()
  41 {
  42 }
  43
  44 void SVGFEOffsetElement::parseMappedAttribute(MappedAttribute* attr)
  45 {
  46     const String& value = attr->value();
  47     if (attr->name() == SVGNames::dxAttr)
  48         setDxBaseValue(value.toFloat());
  49     else if (attr->name() == SVGNames::dyAttr)
  50         setDyBaseValue(value.toFloat());
  51     else if (attr->name() == SVGNames::inAttr)
  52         setIn1BaseValue(value);
  53     else
  54         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  55 }
  56
  57 bool SVGFEOffsetElement::build(SVGResourceFilter* filterResource)
  58 {
  59     FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
  60
  61     if (!input1)
  62         return false;
  63
  64     RefPtr<FilterEffect> effect = FEOffset::create(input1, dx(), dy());
  65     filterResource->addFilterEffect(this, effect.release());
  66
  67     return true;
  68 }
  69
  70 }
  71
  72 #endif // ENABLE(SVG)