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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 "SVGFEOffsetElement.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(SVGFEOffsetElement, SVGNames::inAttr, In1, in1)
     35 DEFINE_ANIMATED_NUMBER(SVGFEOffsetElement, SVGNames::dxAttr, Dx, dx)
     36 DEFINE_ANIMATED_NUMBER(SVGFEOffsetElement, SVGNames::dyAttr, Dy, dy)
     37 
     38 inline SVGFEOffsetElement::SVGFEOffsetElement(const QualifiedName& tagName, Document* document)
     39     : SVGFilterPrimitiveStandardAttributes(tagName, document)
     40 {
     41 }
     42 
     43 PassRefPtr<SVGFEOffsetElement> SVGFEOffsetElement::create(const QualifiedName& tagName, Document* document)
     44 {
     45     return adoptRef(new SVGFEOffsetElement(tagName, document));
     46 }
     47 
     48 void SVGFEOffsetElement::parseMappedAttribute(Attribute* attr)
     49 {
     50     const String& value = attr->value();
     51     if (attr->name() == SVGNames::dxAttr)
     52         setDxBaseValue(value.toFloat());
     53     else if (attr->name() == SVGNames::dyAttr)
     54         setDyBaseValue(value.toFloat());
     55     else if (attr->name() == SVGNames::inAttr)
     56         setIn1BaseValue(value);
     57     else
     58         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     59 }
     60 
     61 void SVGFEOffsetElement::svgAttributeChanged(const QualifiedName& attrName)
     62 {
     63     SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
     64 
     65     if (attrName == SVGNames::inAttr
     66         || attrName == SVGNames::dxAttr
     67         || attrName == SVGNames::dyAttr)
     68         invalidate();
     69 }
     70 
     71 void SVGFEOffsetElement::synchronizeProperty(const QualifiedName& attrName)
     72 {
     73     SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
     74 
     75     if (attrName == anyQName()) {
     76         synchronizeDx();
     77         synchronizeDy();
     78         synchronizeIn1();
     79         return;
     80     }
     81 
     82     if (attrName == SVGNames::dxAttr)
     83         synchronizeDx();
     84     else if (attrName == SVGNames::dyAttr)
     85         synchronizeDy();
     86     else if (attrName == SVGNames::inAttr)
     87         synchronizeIn1();
     88 }
     89 
     90 AttributeToPropertyTypeMap& SVGFEOffsetElement::attributeToPropertyTypeMap()
     91 {
     92     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
     93     return s_attributeToPropertyTypeMap;
     94 }
     95 
     96 void SVGFEOffsetElement::fillAttributeToPropertyTypeMap()
     97 {
     98     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
     99 
    100     SVGFilterPrimitiveStandardAttributes::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    101     attributeToPropertyTypeMap.set(SVGNames::inAttr, AnimatedString);
    102     attributeToPropertyTypeMap.set(SVGNames::dxAttr, AnimatedNumber);
    103     attributeToPropertyTypeMap.set(SVGNames::dyAttr, AnimatedNumber);
    104 }
    105 
    106 PassRefPtr<FilterEffect> SVGFEOffsetElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
    107 {
    108     FilterEffect* input1 = filterBuilder->getEffectById(in1());
    109 
    110     if (!input1)
    111         return 0;
    112 
    113     RefPtr<FilterEffect> effect = FEOffset::create(filter, dx(), dy());
    114     effect->inputEffects().append(input1);
    115     return effect.release();
    116 }
    117 
    118 }
    119 
    120 #endif // ENABLE(SVG)
    121