third_party/WebKit/Source/core/svg/SVGFEOffsetElement.cpp

   1 /*
   2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3  * Copyright (C) 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 #include "core/svg/SVGFEOffsetElement.h"
  24
  25 #include "core/SVGNames.h"
  26 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
  27 #include "platform/graphics/filters/FilterEffect.h"
  28
  29 namespace blink {
  30
  31 inline SVGFEOffsetElement::SVGFEOffsetElement(Document& document)
  32     : SVGFilterPrimitiveStandardAttributes(SVGNames::feOffsetTag, document)
  33     , m_dx(SVGAnimatedNumber::create(this, SVGNames::dxAttr, SVGNumber::create()))
  34     , m_dy(SVGAnimatedNumber::create(this, SVGNames::dyAttr, SVGNumber::create()))
  35     , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
  36 {
  37     addToPropertyMap(m_dx);
  38     addToPropertyMap(m_dy);
  39     addToPropertyMap(m_in1);
  40 }
  41
  42 DEFINE_TRACE(SVGFEOffsetElement)
  43 {
  44     visitor->trace(m_dx);
  45     visitor->trace(m_dy);
  46     visitor->trace(m_in1);
  47     SVGFilterPrimitiveStandardAttributes::trace(visitor);
  48 }
  49
  50 DEFINE_NODE_FACTORY(SVGFEOffsetElement)
  51
  52 void SVGFEOffsetElement::svgAttributeChanged(const QualifiedName& attrName)
  53 {
  54     if (attrName == SVGNames::inAttr || attrName == SVGNames::dxAttr
  55         || attrName == SVGNames::dyAttr) {
  56         SVGElement::InvalidationGuard invalidationGuard(this);
  57         invalidate();
  58         return;
  59     }
  60
  61     SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
  62 }
  63
  64 PassRefPtrWillBeRawPtr<FilterEffect> SVGFEOffsetElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
  65 {
  66     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
  67
  68     if (!input1)
  69         return nullptr;
  70
  71     RefPtrWillBeRawPtr<FilterEffect> effect = FEOffset::create(filter, m_dx->currentValue()->value(), m_dy->currentValue()->value());
  72     effect->inputEffects().append(input1);
  73     return effect.release();
  74 }
  75
  76 } // namespace blink