src/third_party/WebKit/Source/core/svg/SVGFETurbulenceElement.cpp

   1 /*
   2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3  * Copyright (C) 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 #include "core/svg/SVGFETurbulenceElement.h"
  24
  25 #include "core/SVGNames.h"
  26 #include "core/svg/SVGParserUtilities.h"
  27
  28 namespace blink {
  29
  30 template<> const SVGEnumerationStringEntries& getStaticStringEntries<SVGStitchOptions>()
  31 {
  32     DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
  33     if (entries.isEmpty()) {
  34         entries.append(std::make_pair(SVG_STITCHTYPE_STITCH, "stitch"));
  35         entries.append(std::make_pair(SVG_STITCHTYPE_NOSTITCH, "noStitch"));
  36     }
  37     return entries;
  38 }
  39
  40 template<> const SVGEnumerationStringEntries& getStaticStringEntries<TurbulenceType>()
  41 {
  42     DEFINE_STATIC_LOCAL(SVGEnumerationStringEntries, entries, ());
  43     if (entries.isEmpty()) {
  44         entries.append(std::make_pair(FETURBULENCE_TYPE_FRACTALNOISE, "fractalNoise"));
  45         entries.append(std::make_pair(FETURBULENCE_TYPE_TURBULENCE, "turbulence"));
  46     }
  47     return entries;
  48 }
  49
  50 inline SVGFETurbulenceElement::SVGFETurbulenceElement(Document& document)
  51     : SVGFilterPrimitiveStandardAttributes(SVGNames::feTurbulenceTag, document)
  52     , m_baseFrequency(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::baseFrequencyAttr))
  53     , m_seed(SVGAnimatedNumber::create(this, SVGNames::seedAttr, SVGNumber::create(0)))
  54     , m_stitchTiles(SVGAnimatedEnumeration<SVGStitchOptions>::create(this, SVGNames::stitchTilesAttr, SVG_STITCHTYPE_NOSTITCH))
  55     , m_type(SVGAnimatedEnumeration<TurbulenceType>::create(this, SVGNames::typeAttr, FETURBULENCE_TYPE_TURBULENCE))
  56     , m_numOctaves(SVGAnimatedInteger::create(this, SVGNames::numOctavesAttr, SVGInteger::create(1)))
  57 {
  58     addToPropertyMap(m_baseFrequency);
  59     addToPropertyMap(m_seed);
  60     addToPropertyMap(m_stitchTiles);
  61     addToPropertyMap(m_type);
  62     addToPropertyMap(m_numOctaves);
  63 }
  64
  65 DEFINE_NODE_FACTORY(SVGFETurbulenceElement)
  66
  67 bool SVGFETurbulenceElement::isSupportedAttribute(const QualifiedName& attrName)
  68 {
  69     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
  70     if (supportedAttributes.isEmpty()) {
  71         supportedAttributes.add(SVGNames::baseFrequencyAttr);
  72         supportedAttributes.add(SVGNames::numOctavesAttr);
  73         supportedAttributes.add(SVGNames::seedAttr);
  74         supportedAttributes.add(SVGNames::stitchTilesAttr);
  75         supportedAttributes.add(SVGNames::typeAttr);
  76     }
  77     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
  78 }
  79
  80 void SVGFETurbulenceElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
  81 {
  82     parseAttributeNew(name, value);
  83 }
  84
  85 bool SVGFETurbulenceElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
  86 {
  87     FETurbulence* turbulence = static_cast<FETurbulence*>(effect);
  88     if (attrName == SVGNames::typeAttr)
  89         return turbulence->setType(m_type->currentValue()->enumValue());
  90     if (attrName == SVGNames::stitchTilesAttr)
  91         return turbulence->setStitchTiles(m_stitchTiles->currentValue()->enumValue());
  92     if (attrName == SVGNames::baseFrequencyAttr) {
  93         bool baseFrequencyXChanged = turbulence->setBaseFrequencyX(baseFrequencyX()->currentValue()->value());
  94         bool baseFrequencyYChanged = turbulence->setBaseFrequencyY(baseFrequencyY()->currentValue()->value());
  95         return (baseFrequencyXChanged || baseFrequencyYChanged);
  96     }
  97     if (attrName == SVGNames::seedAttr)
  98         return turbulence->setSeed(m_seed->currentValue()->value());
  99     if (attrName == SVGNames::numOctavesAttr)
 100         return turbulence->setNumOctaves(m_numOctaves->currentValue()->value());
 101
 102     ASSERT_NOT_REACHED();
 103     return false;
 104 }
 105
 106 void SVGFETurbulenceElement::svgAttributeChanged(const QualifiedName& attrName)
 107 {
 108     if (!isSupportedAttribute(attrName)) {
 109         SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
 110         return;
 111     }
 112
 113     SVGElement::InvalidationGuard invalidationGuard(this);
 114
 115     if (attrName == SVGNames::baseFrequencyAttr
 116         || attrName == SVGNames::numOctavesAttr
 117         || attrName == SVGNames::seedAttr
 118         || attrName == SVGNames::stitchTilesAttr
 119         || attrName == SVGNames::typeAttr) {
 120         primitiveAttributeChanged(attrName);
 121         return;
 122     }
 123
 124     ASSERT_NOT_REACHED();
 125 }
 126
 127 PassRefPtr<FilterEffect> SVGFETurbulenceElement::build(SVGFilterBuilder*, Filter* filter)
 128 {
 129     if (baseFrequencyX()->currentValue()->value() < 0 || baseFrequencyY()->currentValue()->value() < 0)
 130         return nullptr;
 131     return FETurbulence::create(filter, m_type->currentValue()->enumValue(), baseFrequencyX()->currentValue()->value(), baseFrequencyY()->currentValue()->value(), m_numOctaves->currentValue()->value(), m_seed->currentValue()->value(), m_stitchTiles->currentValue()->enumValue() == SVG_STITCHTYPE_STITCH);
 132 }
 133
 134 } // namespace blink