WebCore/svg/SVGFEColorMatrixElement.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 "SVGFEColorMatrixElement.h"
  25
  26 #include "MappedAttribute.h"
  27 #include "SVGNames.h"
  28 #include "SVGNumberList.h"
  29 #include "SVGResourceFilter.h"
  30
  31 namespace WebCore {
  32
  33 SVGFEColorMatrixElement::SVGFEColorMatrixElement(const QualifiedName& tagName, Document* doc)
  34     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
  35     , m_in1(this, SVGNames::inAttr)
  36     , m_type(this, SVGNames::typeAttr, FECOLORMATRIX_TYPE_UNKNOWN)
  37     , m_values(this, SVGNames::valuesAttr, SVGNumberList::create(SVGNames::valuesAttr))
  38 {
  39 }
  40
  41 SVGFEColorMatrixElement::~SVGFEColorMatrixElement()
  42 {
  43 }
  44
  45 void SVGFEColorMatrixElement::parseMappedAttribute(MappedAttribute* attr)
  46 {
  47     const String& value = attr->value();
  48     if (attr->name() == SVGNames::typeAttr) {
  49         if (value == "matrix")
  50             setTypeBaseValue(FECOLORMATRIX_TYPE_MATRIX);
  51         else if (value == "saturate")
  52             setTypeBaseValue(FECOLORMATRIX_TYPE_SATURATE);
  53         else if (value == "hueRotate")
  54             setTypeBaseValue(FECOLORMATRIX_TYPE_HUEROTATE);
  55         else if (value == "luminanceToAlpha")
  56             setTypeBaseValue(FECOLORMATRIX_TYPE_LUMINANCETOALPHA);
  57     }
  58     else if (attr->name() == SVGNames::inAttr)
  59         setIn1BaseValue(value);
  60     else if (attr->name() == SVGNames::valuesAttr)
  61         valuesBaseValue()->parse(value);
  62     else
  63         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  64 }
  65
  66 bool SVGFEColorMatrixElement::build(SVGResourceFilter* filterResource)
  67 {
  68     FilterEffect* input1 = filterResource->builder()->getEffectById(in1());
  69
  70     if (!input1)
  71         return false;
  72
  73     Vector<float> _values;
  74     SVGNumberList* numbers = values();
  75
  76     ExceptionCode ec = 0;
  77     unsigned int nr = numbers->numberOfItems();
  78     for (unsigned int i = 0;i < nr;i++)
  79         _values.append(numbers->getItem(i, ec));
  80
  81     RefPtr<FilterEffect> effect = FEColorMatrix::create(input1, static_cast<ColorMatrixType>(type()), _values);
  82     filterResource->addFilterEffect(this, effect.release());
  83
  84     return true;
  85 }
  86
  87 } //namespace WebCore
  88
  89 #endif // ENABLE(SVG)