khtml/svg/SVGFEDiffuseLightingElement.cpp

   1 /*
   2      Copyright (C) 2005 Oliver Hunt <ojh16@student.canterbury.ac.nz>
   3
   4      This library is free software; you can redistribute it and/or
   5      modify it under the terms of the GNU Library General Public
   6      License as published by the Free Software Foundation; either
   7      version 2 of the License, or (at your option) any later version.
   8
   9      This library is distributed in the hope that it will be useful,
  10      but WITHOUT ANY WARRANTY; without even the implied warranty of
  11      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12      Library General Public License for more details.
  13
  14      You should have received a copy of the GNU Library General Public License
  15      along with this library; see the file COPYING.LIB.  If not, write to
  16      the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17      Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
  23 #include "SVGFEDiffuseLightingElement.h"
  24
  25 #include "Attr.h"
  26 #include "RenderObject.h"
  27 #include "SVGColor.h"
  28 #include "SVGFELightElement.h"
  29 #include "SVGNames.h"
  30 #include "SVGParserUtilities.h"
  31 #include "SVGRenderStyle.h"
  32 #include "SVGFEDiffuseLighting.h"
  33 #include "SVGResourceFilter.h"
  34
  35 namespace WebCore {
  36
  37 SVGFEDiffuseLightingElement::SVGFEDiffuseLightingElement(const QualifiedName& tagName, Document* doc)
  38     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
  39     , m_diffuseConstant(1.0f)
  40     , m_surfaceScale(1.0f)
  41     , m_kernelUnitLengthX(0.0f)
  42     , m_kernelUnitLengthY(0.0f)
  43     , m_filterEffect(0)
  44 {
  45 }
  46
  47 SVGFEDiffuseLightingElement::~SVGFEDiffuseLightingElement()
  48 {
  49     delete m_filterEffect;
  50 }
  51
  52 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, String, String, string, In1, in1, SVGNames::inAttr, m_in1)
  53 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, DiffuseConstant, diffuseConstant, SVGNames::diffuseConstantAttr, m_diffuseConstant)
  54 ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, SurfaceScale, surfaceScale, SVGNames::surfaceScaleAttr, m_surfaceScale)
  55 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthX, kernelUnitLengthX, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthX", m_kernelUnitLengthX)
  56 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthY, kernelUnitLengthY, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthY", m_kernelUnitLengthY)
  57
  58 void SVGFEDiffuseLightingElement::parseMappedAttribute(MappedAttribute *attr)
  59 {
  60     const String& value = attr->value();
  61     if (attr->name() == SVGNames::inAttr)
  62         setIn1BaseValue(value);
  63     else if (attr->name() == SVGNames::surfaceScaleAttr)
  64         setSurfaceScaleBaseValue(value.toFloat());
  65     else if (attr->name() == SVGNames::diffuseConstantAttr)
  66         setDiffuseConstantBaseValue(value.toInt());
  67     else if (attr->name() == SVGNames::kernelUnitLengthAttr) {
  68         float x, y;
  69         if (parseNumberOptionalNumber(value, x, y)) {
  70             setKernelUnitLengthXBaseValue(x);
  71             setKernelUnitLengthYBaseValue(y);
  72         }
  73     } else
  74         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  75 }
  76
  77 SVGFilterEffect* SVGFEDiffuseLightingElement::filterEffect(SVGResourceFilter* filter) const
  78 {
  79     if (!m_filterEffect)
  80         m_filterEffect = new SVGFEDiffuseLighting(filter);
  81
  82     m_filterEffect->setIn(in1());
  83     m_filterEffect->setDiffuseConstant(diffuseConstant());
  84     m_filterEffect->setSurfaceScale(surfaceScale());
  85     m_filterEffect->setKernelUnitLengthX(kernelUnitLengthX());
  86     m_filterEffect->setKernelUnitLengthY(kernelUnitLengthY());
  87
  88     SVGFEDiffuseLightingElement* nonConstThis = const_cast<SVGFEDiffuseLightingElement*>(this);
  89
  90     RenderStyle* parentStyle = nonConstThis->styleForRenderer(parent()->renderer());
  91     RenderStyle* filterStyle = nonConstThis->resolveStyle(parentStyle);
  92
  93     m_filterEffect->setLightingColor(filterStyle->svgStyle()->lightingColor());
  94     setStandardAttributes(m_filterEffect);
  95
  96     parentStyle->deref(document()->renderArena());
  97     filterStyle->deref(document()->renderArena());
  98
  99     updateLights();
 100     return m_filterEffect;
 101 }
 102
 103 void SVGFEDiffuseLightingElement::updateLights() const
 104 {
 105     if (!m_filterEffect)
 106         return;
 107
 108     SVGLightSource* light = 0;
 109     for (Node* n = firstChild(); n; n = n->nextSibling()) {
 110         if (n->hasTagName(SVGNames::feDistantLightTag) ||
 111             n->hasTagName(SVGNames::fePointLightTag) ||
 112             n->hasTagName(SVGNames::feSpotLightTag)) {
 113             SVGFELightElement* lightNode = static_cast<SVGFELightElement*>(n);
 114             light = lightNode->lightSource();
 115             break;
 116         }
 117     }
 118
 119     m_filterEffect->setLightSource(light);
 120 }
 121
 122 }
 123
 124 #endif // ENABLE(SVG)
 125
 126 // vim:ts=4:noet