src/third_party/WebKit/Source/core/svg/SVGFESpecularLightingElement.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  * Copyright (C) 2005 Oliver Hunt <oliver@nerget.com>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public License
  17  * along with this library; see the file COPYING.LIB.  If not, write to
  18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include "config.h"
  23
  24 #include "core/svg/SVGFESpecularLightingElement.h"
  25
  26 #include "platform/graphics/filters/FilterEffect.h"
  27 #include "core/rendering/style/RenderStyle.h"
  28 #include "core/svg/SVGElementInstance.h"
  29 #include "core/svg/SVGParserUtilities.h"
  30 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
  31
  32 namespace WebCore {
  33
  34 inline SVGFESpecularLightingElement::SVGFESpecularLightingElement(Document& document)
  35     : SVGFilterPrimitiveStandardAttributes(SVGNames::feSpecularLightingTag, document)
  36     , m_specularConstant(SVGAnimatedNumber::create(this, SVGNames::specularConstantAttr, SVGNumber::create(1)))
  37     , m_specularExponent(SVGAnimatedNumber::create(this, SVGNames::specularExponentAttr, SVGNumber::create(1)))
  38     , m_surfaceScale(SVGAnimatedNumber::create(this, SVGNames::surfaceScaleAttr, SVGNumber::create(1)))
  39     , m_kernelUnitLength(SVGAnimatedNumberOptionalNumber::create(this, SVGNames::surfaceScaleAttr))
  40     , m_in1(SVGAnimatedString::create(this, SVGNames::inAttr, SVGString::create()))
  41 {
  42     ScriptWrappable::init(this);
  43
  44     addToPropertyMap(m_specularConstant);
  45     addToPropertyMap(m_specularExponent);
  46     addToPropertyMap(m_surfaceScale);
  47     addToPropertyMap(m_kernelUnitLength);
  48     addToPropertyMap(m_in1);
  49 }
  50
  51 PassRefPtr<SVGFESpecularLightingElement> SVGFESpecularLightingElement::create(Document& document)
  52 {
  53     return adoptRef(new SVGFESpecularLightingElement(document));
  54 }
  55
  56 bool SVGFESpecularLightingElement::isSupportedAttribute(const QualifiedName& attrName)
  57 {
  58     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
  59     if (supportedAttributes.isEmpty()) {
  60         supportedAttributes.add(SVGNames::inAttr);
  61         supportedAttributes.add(SVGNames::specularConstantAttr);
  62         supportedAttributes.add(SVGNames::specularExponentAttr);
  63         supportedAttributes.add(SVGNames::surfaceScaleAttr);
  64         supportedAttributes.add(SVGNames::kernelUnitLengthAttr);
  65     }
  66     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
  67 }
  68
  69 void SVGFESpecularLightingElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
  70 {
  71     if (!isSupportedAttribute(name)) {
  72         SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
  73         return;
  74     }
  75
  76     SVGParsingError parseError = NoError;
  77
  78     if (name == SVGNames::inAttr)
  79         m_in1->setBaseValueAsString(value, parseError);
  80     else if (name == SVGNames::surfaceScaleAttr)
  81         m_surfaceScale->setBaseValueAsString(value, parseError);
  82     else if (name == SVGNames::specularConstantAttr)
  83         m_specularConstant->setBaseValueAsString(value, parseError);
  84     else if (name == SVGNames::specularExponentAttr)
  85         m_specularExponent->setBaseValueAsString(value, parseError);
  86     else if (name == SVGNames::kernelUnitLengthAttr)
  87         m_kernelUnitLength->setBaseValueAsString(value, parseError);
  88     else
  89         ASSERT_NOT_REACHED();
  90
  91     reportAttributeParsingError(parseError, name, value);
  92 }
  93
  94 bool SVGFESpecularLightingElement::setFilterEffectAttribute(FilterEffect* effect, const QualifiedName& attrName)
  95 {
  96     FESpecularLighting* specularLighting = static_cast<FESpecularLighting*>(effect);
  97
  98     if (attrName == SVGNames::lighting_colorAttr) {
  99         RenderObject* renderer = this->renderer();
 100         ASSERT(renderer);
 101         ASSERT(renderer->style());
 102         return specularLighting->setLightingColor(renderer->style()->svgStyle()->lightingColor());
 103     }
 104     if (attrName == SVGNames::surfaceScaleAttr)
 105         return specularLighting->setSurfaceScale(m_surfaceScale->currentValue()->value());
 106     if (attrName == SVGNames::specularConstantAttr)
 107         return specularLighting->setSpecularConstant(m_specularConstant->currentValue()->value());
 108     if (attrName == SVGNames::specularExponentAttr)
 109         return specularLighting->setSpecularExponent(m_specularExponent->currentValue()->value());
 110
 111     LightSource* lightSource = const_cast<LightSource*>(specularLighting->lightSource());
 112     SVGFELightElement* lightElement = SVGFELightElement::findLightElement(*this);
 113     ASSERT(lightSource);
 114     ASSERT(lightElement);
 115
 116     if (attrName == SVGNames::azimuthAttr)
 117         return lightSource->setAzimuth(lightElement->azimuth()->currentValue()->value());
 118     if (attrName == SVGNames::elevationAttr)
 119         return lightSource->setElevation(lightElement->elevation()->currentValue()->value());
 120     if (attrName == SVGNames::xAttr)
 121         return lightSource->setX(lightElement->x()->currentValue()->value());
 122     if (attrName == SVGNames::yAttr)
 123         return lightSource->setY(lightElement->y()->currentValue()->value());
 124     if (attrName == SVGNames::zAttr)
 125         return lightSource->setZ(lightElement->z()->currentValue()->value());
 126     if (attrName == SVGNames::pointsAtXAttr)
 127         return lightSource->setPointsAtX(lightElement->pointsAtX()->currentValue()->value());
 128     if (attrName == SVGNames::pointsAtYAttr)
 129         return lightSource->setPointsAtY(lightElement->pointsAtY()->currentValue()->value());
 130     if (attrName == SVGNames::pointsAtZAttr)
 131         return lightSource->setPointsAtZ(lightElement->pointsAtZ()->currentValue()->value());
 132     if (attrName == SVGNames::specularExponentAttr)
 133         return lightSource->setSpecularExponent(lightElement->specularExponent()->currentValue()->value());
 134     if (attrName == SVGNames::limitingConeAngleAttr)
 135         return lightSource->setLimitingConeAngle(lightElement->limitingConeAngle()->currentValue()->value());
 136
 137     ASSERT_NOT_REACHED();
 138     return false;
 139 }
 140
 141 void SVGFESpecularLightingElement::svgAttributeChanged(const QualifiedName& attrName)
 142 {
 143     if (!isSupportedAttribute(attrName)) {
 144         SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
 145         return;
 146     }
 147
 148     SVGElement::InvalidationGuard invalidationGuard(this);
 149
 150     if (attrName == SVGNames::surfaceScaleAttr
 151         || attrName == SVGNames::specularConstantAttr
 152         || attrName == SVGNames::specularExponentAttr
 153         || attrName == SVGNames::kernelUnitLengthAttr) {
 154         primitiveAttributeChanged(attrName);
 155         return;
 156     }
 157
 158     if (attrName == SVGNames::inAttr) {
 159         invalidate();
 160         return;
 161     }
 162
 163     ASSERT_NOT_REACHED();
 164 }
 165
 166 void SVGFESpecularLightingElement::lightElementAttributeChanged(const SVGFELightElement* lightElement, const QualifiedName& attrName)
 167 {
 168     if (SVGFELightElement::findLightElement(*this) != lightElement)
 169         return;
 170
 171     // The light element has different attribute names so attrName can identify the requested attribute.
 172     primitiveAttributeChanged(attrName);
 173 }
 174
 175 PassRefPtr<FilterEffect> SVGFESpecularLightingElement::build(SVGFilterBuilder* filterBuilder, Filter* filter)
 176 {
 177     FilterEffect* input1 = filterBuilder->getEffectById(AtomicString(m_in1->currentValue()->value()));
 178
 179     if (!input1)
 180         return nullptr;
 181
 182     RefPtr<LightSource> lightSource = SVGFELightElement::findLightSource(*this);
 183     if (!lightSource)
 184         return nullptr;
 185
 186     RenderObject* renderer = this->renderer();
 187     if (!renderer)
 188         return nullptr;
 189
 190     ASSERT(renderer->style());
 191     Color color = renderer->style()->svgStyle()->lightingColor();
 192
 193     RefPtr<FilterEffect> effect = FESpecularLighting::create(filter, color, m_surfaceScale->currentValue()->value(), m_specularConstant->currentValue()->value(),
 194         m_specularExponent->currentValue()->value(), kernelUnitLengthX()->currentValue()->value(), kernelUnitLengthY()->currentValue()->value(), lightSource.release());
 195     effect->inputEffects().append(input1);
 196     return effect.release();
 197 }
 198
 199 }