WebCore/svg/SVGFEBlendElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006 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 "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_in1(this, SVGNames::inAttr)
  34     , m_in2(this, SVGNames::in2Attr)
  35     , m_mode(this, SVGNames::modeAttr, FEBLEND_MODE_NORMAL)
  36 {
  37 }
  38
  39 SVGFEBlendElement::~SVGFEBlendElement()
  40 {
  41 }
  42
  43 void SVGFEBlendElement::parseMappedAttribute(MappedAttribute* attr)
  44 {
  45     const String& value = attr->value();
  46     if (attr->name() == SVGNames::modeAttr) {
  47         if (value == "normal")
  48             setModeBaseValue(FEBLEND_MODE_NORMAL);
  49         else if (value == "multiply")
  50             setModeBaseValue(FEBLEND_MODE_MULTIPLY);
  51         else if (value == "screen")
  52             setModeBaseValue(FEBLEND_MODE_SCREEN);
  53         else if (value == "darken")
  54             setModeBaseValue(FEBLEND_MODE_DARKEN);
  55         else if (value == "lighten")
  56             setModeBaseValue(FEBLEND_MODE_LIGHTEN);
  57     } else if (attr->name() == SVGNames::inAttr)
  58         setIn1BaseValue(value);
  59     else if (attr->name() == SVGNames::in2Attr)
  60         setIn2BaseValue(value);
  61     else
  62         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  63 }
  64
  65 bool SVGFEBlendElement::build(SVGResourceFilter* filterResource)
  66 {
  67     FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
  68     FilterEffect* input2 = filterResource->builder()->getEffectById(in2());
  69
  70     if (!input1 || !input2)
  71         return false;
  72
  73     RefPtr<FilterEffect> effect = FEBlend::create(input1, input2, static_cast<BlendModeType>(mode()));
  74     filterResource->addFilterEffect(this, effect.release());
  75
  76     return true;
  77 }
  78
  79 }
  80
  81 #endif // ENABLE(SVG)
  82
  83 // vim:ts=4:noet