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SVGFEDiffuseLightingElement.cpp
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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
35namespace WebCore {
36
37SVGFEDiffuseLightingElement::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
47SVGFEDiffuseLightingElement::~SVGFEDiffuseLightingElement()
48{
49 delete m_filterEffect;
50}
51
52ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, String, String, string, In1, in1, SVGNames::inAttr, m_in1)
53ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, DiffuseConstant, diffuseConstant, SVGNames::diffuseConstantAttr, m_diffuseConstant)
54ANIMATED_PROPERTY_DEFINITIONS(SVGFEDiffuseLightingElement, float, Number, number, SurfaceScale, surfaceScale, SVGNames::surfaceScaleAttr, m_surfaceScale)
55ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthX, kernelUnitLengthX, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthX", m_kernelUnitLengthX)
56ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGFEDiffuseLightingElement, float, Number, number, KernelUnitLengthY, kernelUnitLengthY, SVGNames::kernelUnitLengthAttr, "kernelUnitLengthY", m_kernelUnitLengthY)
57
58void 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
77SVGFilterEffect* 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
103void 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
RenderObject.h
SVGFEDiffuseLightingElement.h
SVGFEDiffuseLighting.h
SVGFELightElement.h
SVGNames.h
SVGParserUtilities.h
SVGResourceFilter.h
WebCore
Definition: CSSHelper.h:7
WebCore::String
DOM::DOMString String
Definition: PlatformString.h:8
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