1/*
2 * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB.  If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21#include "config.h"
22
23#include "core/svg/SVGCircleElement.h"
24
25#include "core/rendering/svg/RenderSVGEllipse.h"
26#include "core/rendering/svg/RenderSVGResource.h"
27#include "core/svg/SVGLength.h"
28
29namespace blink {
30
31inline SVGCircleElement::SVGCircleElement(Document& document)
32    : SVGGeometryElement(SVGNames::circleTag, document)
33    , m_cx(SVGAnimatedLength::create(this, SVGNames::cxAttr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
34    , m_cy(SVGAnimatedLength::create(this, SVGNames::cyAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
35    , m_r(SVGAnimatedLength::create(this, SVGNames::rAttr, SVGLength::create(LengthModeOther), ForbidNegativeLengths))
36{
37    addToPropertyMap(m_cx);
38    addToPropertyMap(m_cy);
39    addToPropertyMap(m_r);
40}
41
42DEFINE_NODE_FACTORY(SVGCircleElement)
43
44bool SVGCircleElement::isSupportedAttribute(const QualifiedName& attrName)
45{
46    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
47    if (supportedAttributes.isEmpty()) {
48        supportedAttributes.add(SVGNames::cxAttr);
49        supportedAttributes.add(SVGNames::cyAttr);
50        supportedAttributes.add(SVGNames::rAttr);
51    }
52    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
53}
54
55void SVGCircleElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
56{
57    parseAttributeNew(name, value);
58}
59
60void SVGCircleElement::svgAttributeChanged(const QualifiedName& attrName)
61{
62    if (!isSupportedAttribute(attrName)) {
63        SVGGeometryElement::svgAttributeChanged(attrName);
64        return;
65    }
66
67    SVGElement::InvalidationGuard invalidationGuard(this);
68
69    bool isLengthAttribute = attrName == SVGNames::cxAttr
70                          || attrName == SVGNames::cyAttr
71                          || attrName == SVGNames::rAttr;
72
73    if (isLengthAttribute)
74        updateRelativeLengthsInformation();
75
76    RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
77    if (!renderer)
78        return;
79
80    if (isLengthAttribute) {
81        renderer->setNeedsShapeUpdate();
82        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
83        return;
84    }
85
86    ASSERT_NOT_REACHED();
87}
88
89bool SVGCircleElement::selfHasRelativeLengths() const
90{
91    return m_cx->currentValue()->isRelative()
92        || m_cy->currentValue()->isRelative()
93        || m_r->currentValue()->isRelative();
94}
95
96RenderObject* SVGCircleElement::createRenderer(RenderStyle*)
97{
98    return new RenderSVGEllipse(this);
99}
100
101}
102