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#include "core/svg/SVGLineElement.h"
23
24#include "core/rendering/svg/RenderSVGResource.h"
25#include "core/rendering/svg/RenderSVGShape.h"
26#include "core/svg/SVGLength.h"
27
28namespace blink {
29
30inline SVGLineElement::SVGLineElement(Document& document)
31    : SVGGeometryElement(SVGNames::lineTag, document)
32    , m_x1(SVGAnimatedLength::create(this, SVGNames::x1Attr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
33    , m_y1(SVGAnimatedLength::create(this, SVGNames::y1Attr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
34    , m_x2(SVGAnimatedLength::create(this, SVGNames::x2Attr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
35    , m_y2(SVGAnimatedLength::create(this, SVGNames::y2Attr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
36{
37    addToPropertyMap(m_x1);
38    addToPropertyMap(m_y1);
39    addToPropertyMap(m_x2);
40    addToPropertyMap(m_y2);
41}
42
43DEFINE_NODE_FACTORY(SVGLineElement)
44
45bool SVGLineElement::isSupportedAttribute(const QualifiedName& attrName)
46{
47    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
48    if (supportedAttributes.isEmpty()) {
49        supportedAttributes.add(SVGNames::x1Attr);
50        supportedAttributes.add(SVGNames::x2Attr);
51        supportedAttributes.add(SVGNames::y1Attr);
52        supportedAttributes.add(SVGNames::y2Attr);
53    }
54    return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
55}
56
57void SVGLineElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
58{
59    parseAttributeNew(name, value);
60}
61
62void SVGLineElement::svgAttributeChanged(const QualifiedName& attrName)
63{
64    if (!isSupportedAttribute(attrName)) {
65        SVGGeometryElement::svgAttributeChanged(attrName);
66        return;
67    }
68
69    SVGElement::InvalidationGuard invalidationGuard(this);
70
71    bool isLengthAttribute = attrName == SVGNames::x1Attr
72                          || attrName == SVGNames::y1Attr
73                          || attrName == SVGNames::x2Attr
74                          || attrName == SVGNames::y2Attr;
75
76    if (isLengthAttribute)
77        updateRelativeLengthsInformation();
78
79    RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
80    if (!renderer)
81        return;
82
83    if (isLengthAttribute) {
84        renderer->setNeedsShapeUpdate();
85        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
86        return;
87    }
88
89    ASSERT_NOT_REACHED();
90}
91
92bool SVGLineElement::selfHasRelativeLengths() const
93{
94    return m_x1->currentValue()->isRelative()
95        || m_y1->currentValue()->isRelative()
96        || m_x2->currentValue()->isRelative()
97        || m_y2->currentValue()->isRelative();
98}
99
100} // namespace blink
101