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      1 /*
      2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3                   2004, 2005, 2006 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 "SVGFEBlendElement.h"
     25 
     26 #include "MappedAttribute.h"
     27 #include "SVGResourceFilter.h"
     28 
     29 namespace WebCore {
     30 
     31 SVGFEBlendElement::SVGFEBlendElement(const QualifiedName& tagName, Document* doc)
     32     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
     33     , m_mode(FEBLEND_MODE_NORMAL)
     34 {
     35 }
     36 
     37 SVGFEBlendElement::~SVGFEBlendElement()
     38 {
     39 }
     40 
     41 void SVGFEBlendElement::parseMappedAttribute(MappedAttribute* attr)
     42 {
     43     const String& value = attr->value();
     44     if (attr->name() == SVGNames::modeAttr) {
     45         if (value == "normal")
     46             setModeBaseValue(FEBLEND_MODE_NORMAL);
     47         else if (value == "multiply")
     48             setModeBaseValue(FEBLEND_MODE_MULTIPLY);
     49         else if (value == "screen")
     50             setModeBaseValue(FEBLEND_MODE_SCREEN);
     51         else if (value == "darken")
     52             setModeBaseValue(FEBLEND_MODE_DARKEN);
     53         else if (value == "lighten")
     54             setModeBaseValue(FEBLEND_MODE_LIGHTEN);
     55     } else if (attr->name() == SVGNames::inAttr)
     56         setIn1BaseValue(value);
     57     else if (attr->name() == SVGNames::in2Attr)
     58         setIn2BaseValue(value);
     59     else
     60         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     61 }
     62 
     63 void SVGFEBlendElement::synchronizeProperty(const QualifiedName& attrName)
     64 {
     65     SVGFilterPrimitiveStandardAttributes::synchronizeProperty(attrName);
     66 
     67     if (attrName == anyQName()) {
     68         synchronizeMode();
     69         synchronizeIn1();
     70         synchronizeIn2();
     71         return;
     72     }
     73 
     74     if (attrName == SVGNames::modeAttr)
     75         synchronizeMode();
     76     else if (attrName == SVGNames::inAttr)
     77         synchronizeIn1();
     78     else if (attrName == SVGNames::in2Attr)
     79         synchronizeIn2();
     80 }
     81 
     82 bool SVGFEBlendElement::build(SVGResourceFilter* filterResource)
     83 {
     84     FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
     85     FilterEffect* input2 = filterResource->builder()->getEffectById(in2());
     86 
     87     if (!input1 || !input2)
     88         return false;
     89 
     90     RefPtr<FilterEffect> effect = FEBlend::create(input1, input2, static_cast<BlendModeType>(mode()));
     91     filterResource->addFilterEffect(this, effect.release());
     92 
     93     return true;
     94 }
     95 
     96 }
     97 
     98 #endif // ENABLE(SVG)
     99 
    100 // vim:ts=4:noet
    101