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/SVGFELightElement.h"
25
26#include "core/SVGNames.h"
27#include "core/dom/ElementTraversal.h"
28#include "core/rendering/RenderObject.h"
29#include "core/rendering/svg/RenderSVGResource.h"
30#include "core/svg/SVGFEDiffuseLightingElement.h"
31#include "core/svg/SVGFESpecularLightingElement.h"
32
33namespace blink {
34
35SVGFELightElement::SVGFELightElement(const QualifiedName& tagName, Document& document)
36    : SVGElement(tagName, document)
37    , m_azimuth(SVGAnimatedNumber::create(this, SVGNames::azimuthAttr, SVGNumber::create()))
38    , m_elevation(SVGAnimatedNumber::create(this, SVGNames::elevationAttr, SVGNumber::create()))
39    , m_x(SVGAnimatedNumber::create(this, SVGNames::xAttr, SVGNumber::create()))
40    , m_y(SVGAnimatedNumber::create(this, SVGNames::yAttr, SVGNumber::create()))
41    , m_z(SVGAnimatedNumber::create(this, SVGNames::zAttr, SVGNumber::create()))
42    , m_pointsAtX(SVGAnimatedNumber::create(this, SVGNames::pointsAtXAttr, SVGNumber::create()))
43    , m_pointsAtY(SVGAnimatedNumber::create(this, SVGNames::pointsAtYAttr, SVGNumber::create()))
44    , m_pointsAtZ(SVGAnimatedNumber::create(this, SVGNames::pointsAtZAttr, SVGNumber::create()))
45    , m_specularExponent(SVGAnimatedNumber::create(this, SVGNames::specularExponentAttr, SVGNumber::create(1)))
46    , m_limitingConeAngle(SVGAnimatedNumber::create(this, SVGNames::limitingConeAngleAttr, SVGNumber::create()))
47{
48    addToPropertyMap(m_azimuth);
49    addToPropertyMap(m_elevation);
50    addToPropertyMap(m_x);
51    addToPropertyMap(m_y);
52    addToPropertyMap(m_z);
53    addToPropertyMap(m_pointsAtX);
54    addToPropertyMap(m_pointsAtY);
55    addToPropertyMap(m_pointsAtZ);
56    addToPropertyMap(m_specularExponent);
57    addToPropertyMap(m_limitingConeAngle);
58}
59
60SVGFELightElement* SVGFELightElement::findLightElement(const SVGElement& svgElement)
61{
62    return Traversal<SVGFELightElement>::firstChild(svgElement);
63}
64
65FloatPoint3D SVGFELightElement::position() const
66{
67    return FloatPoint3D(x()->currentValue()->value(), y()->currentValue()->value(), z()->currentValue()->value());
68}
69
70FloatPoint3D SVGFELightElement::pointsAt() const
71{
72    return FloatPoint3D(pointsAtX()->currentValue()->value(), pointsAtY()->currentValue()->value(), pointsAtZ()->currentValue()->value());
73}
74
75bool SVGFELightElement::isSupportedAttribute(const QualifiedName& attrName)
76{
77    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
78    if (supportedAttributes.isEmpty()) {
79        supportedAttributes.add(SVGNames::azimuthAttr);
80        supportedAttributes.add(SVGNames::elevationAttr);
81        supportedAttributes.add(SVGNames::xAttr);
82        supportedAttributes.add(SVGNames::yAttr);
83        supportedAttributes.add(SVGNames::zAttr);
84        supportedAttributes.add(SVGNames::pointsAtXAttr);
85        supportedAttributes.add(SVGNames::pointsAtYAttr);
86        supportedAttributes.add(SVGNames::pointsAtZAttr);
87        supportedAttributes.add(SVGNames::specularExponentAttr);
88        supportedAttributes.add(SVGNames::limitingConeAngleAttr);
89    }
90    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
91}
92
93void SVGFELightElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
94{
95    if (!isSupportedAttribute(name)) {
96        SVGElement::parseAttribute(name, value);
97        return;
98    }
99
100    SVGParsingError parseError = NoError;
101
102    if (name == SVGNames::azimuthAttr)
103        m_azimuth->setBaseValueAsString(value, parseError);
104    else if (name == SVGNames::elevationAttr)
105        m_elevation->setBaseValueAsString(value, parseError);
106    else if (name == SVGNames::xAttr)
107        m_x->setBaseValueAsString(value, parseError);
108    else if (name == SVGNames::yAttr)
109        m_y->setBaseValueAsString(value, parseError);
110    else if (name == SVGNames::zAttr)
111        m_z->setBaseValueAsString(value, parseError);
112    else if (name == SVGNames::pointsAtXAttr)
113        m_pointsAtX->setBaseValueAsString(value, parseError);
114    else if (name == SVGNames::pointsAtYAttr)
115        m_pointsAtY->setBaseValueAsString(value, parseError);
116    else if (name == SVGNames::pointsAtZAttr)
117        m_pointsAtZ->setBaseValueAsString(value, parseError);
118    else if (name == SVGNames::specularExponentAttr)
119        m_specularExponent->setBaseValueAsString(value, parseError);
120    else if (name == SVGNames::limitingConeAngleAttr)
121        m_limitingConeAngle->setBaseValueAsString(value, parseError);
122    else
123        ASSERT_NOT_REACHED();
124
125    reportAttributeParsingError(parseError, name, value);
126}
127
128void SVGFELightElement::svgAttributeChanged(const QualifiedName& attrName)
129{
130    if (!isSupportedAttribute(attrName)) {
131        SVGElement::svgAttributeChanged(attrName);
132        return;
133    }
134
135    SVGElement::InvalidationGuard invalidationGuard(this);
136
137    if (attrName == SVGNames::azimuthAttr
138        || attrName == SVGNames::elevationAttr
139        || attrName == SVGNames::xAttr
140        || attrName == SVGNames::yAttr
141        || attrName == SVGNames::zAttr
142        || attrName == SVGNames::pointsAtXAttr
143        || attrName == SVGNames::pointsAtYAttr
144        || attrName == SVGNames::pointsAtZAttr
145        || attrName == SVGNames::specularExponentAttr
146        || attrName == SVGNames::limitingConeAngleAttr) {
147        ContainerNode* parent = parentNode();
148        if (!parent)
149            return;
150
151        RenderObject* renderer = parent->renderer();
152        if (!renderer || !renderer->isSVGResourceFilterPrimitive())
153            return;
154
155        if (isSVGFEDiffuseLightingElement(*parent)) {
156            toSVGFEDiffuseLightingElement(*parent).lightElementAttributeChanged(this, attrName);
157            return;
158        }
159        if (isSVGFESpecularLightingElement(*parent)) {
160            toSVGFESpecularLightingElement(*parent).lightElementAttributeChanged(this, attrName);
161            return;
162        }
163    }
164
165    ASSERT_NOT_REACHED();
166}
167
168void SVGFELightElement::childrenChanged(const ChildrenChange& change)
169{
170    SVGElement::childrenChanged(change);
171
172    if (!change.byParser) {
173        if (ContainerNode* parent = parentNode()) {
174            RenderObject* renderer = parent->renderer();
175            if (renderer && renderer->isSVGResourceFilterPrimitive())
176                RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
177        }
178    }
179}
180
181}
182