File indexing completed on 2024-04-28 15:24:30

 /*
      Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
 
      This library is free software; you can redistribute it and/or
      modify it under the terms of the GNU Library General Public
      License as published by the Free Software Foundation; either
      version 2 of the License, or (at your option) any later version.
 
      This library is distributed in the hope that it will be useful,
      but WITHOUT ANY WARRANTY; without even the implied warranty of
      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      Library General Public License for more details.
 
      You should have received a copy of the GNU Library General Public License
      along with this library; see the file COPYING.LIB.  If not, write to
      the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
      Boston, MA 02110-1301, USA.
  */
 
 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
 #include "SVGFEDiffuseLightingElement.h"
 
 #include "Attr.h"
 #include "RenderObject.h"
 #include "SVGColor.h"
 #include "SVGFELightElement.h"
 #include "SVGNames.h"
 #include "SVGParserUtilities.h"
 #include "SVGRenderStyle.h"
 #include "SVGFEDiffuseLighting.h"
 #include "SVGResourceFilter.h"
 
 namespace WebCore
 {
 
 SVGFEDiffuseLightingElement::SVGFEDiffuseLightingElement(const QualifiedName &tagName, Document *doc)
     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
     , m_diffuseConstant(1.0f)
     , m_surfaceScale(1.0f)
     , m_kernelUnitLengthX(0.0f)
     , m_kernelUnitLengthY(0.0f)
     , m_filterEffect(0)
 {
 }
 
 SVGFEDiffuseLightingElement::~SVGFEDiffuseLightingElement()
 {
     delete m_filterEffect;
 }
 
 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, String, String, string, In1, in1, SVGNames::inAttr, m_in1)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, DiffuseConstant, diffuseConstant, SVGNames::diffuseConstantAttr, m_diffuseConstant)
 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, SurfaceScale, surfaceScale, SVGNames::surfaceScaleAttr, m_surfaceScale)
 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthX, kernelUnitLengthX, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthX", m_kernelUnitLengthX)
 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthY, kernelUnitLengthY, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthY", m_kernelUnitLengthY)
 
 void SVGFEDiffuseLightingElement::parseMappedAttribute(MappedAttribute *attr)
 {
     const String &value = attr->value();
     if (attr->name() == SVGNames::inAttr) {
         setIn1BaseValue(value);
     } else if (attr->name() == SVGNames::surfaceScaleAttr) {
         setSurfaceScaleBaseValue(value.toFloat());
     } else if (attr->name() == SVGNames::diffuseConstantAttr) {
         setDiffuseConstantBaseValue(value.toInt());
     } else if (attr->name() == SVGNames::kernelUnitLengthAttr) {
         float x, y;
         if (parseNumberOptionalNumber(value, x, y)) {
             setKernelUnitLengthXBaseValue(x);
             setKernelUnitLengthYBaseValue(y);
         }
     } else {
         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     }
 }
 
 SVGFilterEffect *SVGFEDiffuseLightingElement::filterEffect(SVGResourceFilter *filter) const
 {
     if (!m_filterEffect) {
         m_filterEffect = new SVGFEDiffuseLighting(filter);
     }
 
     m_filterEffect->setIn(in1());
     m_filterEffect->setDiffuseConstant(diffuseConstant());
     m_filterEffect->setSurfaceScale(surfaceScale());
     m_filterEffect->setKernelUnitLengthX(kernelUnitLengthX());
     m_filterEffect->setKernelUnitLengthY(kernelUnitLengthY());
 
     SVGFEDiffuseLightingElement *nonConstThis = const_cast<SVGFEDiffuseLightingElement *>(this);
 
     RenderStyle *parentStyle = nonConstThis->styleForRenderer(parent()->renderer());
     RenderStyle *filterStyle = nonConstThis->resolveStyle(parentStyle);
 
     m_filterEffect->setLightingColor(filterStyle->svgStyle()->lightingColor());
     setStandardAttributes(m_filterEffect);
 
     parentStyle->deref(document()->renderArena());
     filterStyle->deref(document()->renderArena());
 
     updateLights();
     return m_filterEffect;
 }
 
 void SVGFEDiffuseLightingElement::updateLights() const
 {
     if (!m_filterEffect) {
         return;
     }
 
     SVGLightSource *light = 0;
     for (Node *n = firstChild(); n; n = n->nextSibling()) {
         if (n->hasTagName(SVGNames::feDistantLightTag) ||
                 n->hasTagName(SVGNames::fePointLightTag) ||
                 n->hasTagName(SVGNames::feSpotLightTag)) {
             SVGFELightElement *lightNode = static_cast<SVGFELightElement *>(n);
             light = lightNode->lightSource();
             break;
         }
     }
 
     m_filterEffect->setLightSource(light);
 }
 
 }
 
 #endif // ENABLE(SVG)