WebCore/svg/SVGFETurbulenceElement.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 "SVGFETurbulenceElement.h"
  25
  26 #include "MappedAttribute.h"
  27 #include "SVGParserUtilities.h"
  28 #include "SVGResourceFilter.h"
  29
  30 namespace WebCore {
  31
  32 char SVGBaseFrequencyXIdentifier[] = "SVGBaseFrequencyX";
  33 char SVGBaseFrequencyYIdentifier[] = "SVGBaseFrequencyY";
  34
  35 SVGFETurbulenceElement::SVGFETurbulenceElement(const QualifiedName& tagName, Document* doc)
  36     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
  37     , m_baseFrequencyX(this, SVGNames::baseFrequencyAttr)
  38     , m_baseFrequencyY(this, SVGNames::baseFrequencyAttr)
  39     , m_numOctaves(this, SVGNames::numOctavesAttr, 1)
  40     , m_seed(this, SVGNames::seedAttr)
  41     , m_stitchTiles(this, SVGNames::stitchTilesAttr, SVG_STITCHTYPE_NOSTITCH)
  42     , m_type(this, SVGNames::typeAttr, FETURBULENCE_TYPE_TURBULENCE)
  43 {
  44 }
  45
  46 SVGFETurbulenceElement::~SVGFETurbulenceElement()
  47 {
  48 }
  49
  50 void SVGFETurbulenceElement::parseMappedAttribute(MappedAttribute* attr)
  51 {
  52     const String& value = attr->value();
  53     if (attr->name() == SVGNames::typeAttr) {
  54         if (value == "fractalNoise")
  55             setTypeBaseValue(FETURBULENCE_TYPE_FRACTALNOISE);
  56         else if (value == "turbulence")
  57             setTypeBaseValue(FETURBULENCE_TYPE_TURBULENCE);
  58     } else if (attr->name() == SVGNames::stitchTilesAttr) {
  59         if (value == "stitch")
  60             setStitchTilesBaseValue(SVG_STITCHTYPE_STITCH);
  61         else if (value == "nostitch")
  62             setStitchTilesBaseValue(SVG_STITCHTYPE_NOSTITCH);
  63     } else if (attr->name() == SVGNames::baseFrequencyAttr) {
  64         float x, y;
  65         if (parseNumberOptionalNumber(value, x, y)) {
  66             setBaseFrequencyXBaseValue(x);
  67             setBaseFrequencyYBaseValue(y);
  68         }
  69     } else if (attr->name() == SVGNames::seedAttr)
  70         setSeedBaseValue(value.toFloat());
  71     else if (attr->name() == SVGNames::numOctavesAttr)
  72         setNumOctavesBaseValue(value.toUIntStrict());
  73     else
  74         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  75 }
  76
  77 bool SVGFETurbulenceElement::build(SVGResourceFilter* filterResource)
  78 {
  79     RefPtr<FilterEffect> effect = FETurbulence::create(static_cast<TurbulanceType>(type()), baseFrequencyX(),
  80                                         baseFrequencyY(), numOctaves(), seed(), stitchTiles() == SVG_STITCHTYPE_STITCH);
  81     filterResource->addFilterEffect(this, effect.release());
  82
  83     return true;
  84 }
  85
  86 }
  87
  88 #endif // ENABLE(SVG)