1/*
2 * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
4 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
5 * Copyright (C) 2018 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#include "config.h"
24#include "SVGClipPathElement.h"
25
26#include "Document.h"
27#include "RenderSVGResourceClipper.h"
28#include "SVGNames.h"
29#include "StyleResolver.h"
30#include <wtf/IsoMallocInlines.h>
31#include <wtf/NeverDestroyed.h>
32
33namespace WebCore {
34
35WTF_MAKE_ISO_ALLOCATED_IMPL(SVGClipPathElement);
36
37inline SVGClipPathElement::SVGClipPathElement(const QualifiedName& tagName, Document& document)
38 : SVGGraphicsElement(tagName, document)
39 , SVGExternalResourcesRequired(this)
40{
41 ASSERT(hasTagName(SVGNames::clipPathTag));
42
43 static std::once_flag onceFlag;
44 std::call_once(onceFlag, [] {
45 PropertyRegistry::registerProperty<SVGNames::clipPathUnitsAttr, SVGUnitTypes::SVGUnitType, &SVGClipPathElement::m_clipPathUnits>();
46 });}
47
48Ref<SVGClipPathElement> SVGClipPathElement::create(const QualifiedName& tagName, Document& document)
49{
50 return adoptRef(*new SVGClipPathElement(tagName, document));
51}
52
53void SVGClipPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
54{
55 if (name == SVGNames::clipPathUnitsAttr) {
56 auto propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
57 if (propertyValue > 0)
58 m_clipPathUnits->setBaseValInternal<SVGUnitTypes::SVGUnitType>(propertyValue);
59 return;
60 }
61
62 SVGGraphicsElement::parseAttribute(name, value);
63 SVGExternalResourcesRequired::parseAttribute(name, value);
64}
65
66void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
67{
68 if (PropertyRegistry::isKnownAttribute(attrName)) {
69 InstanceInvalidationGuard guard(*this);
70
71 if (RenderObject* object = renderer())
72 object->setNeedsLayout();
73 return;
74 }
75
76 SVGGraphicsElement::svgAttributeChanged(attrName);
77 SVGExternalResourcesRequired::svgAttributeChanged(attrName);
78}
79
80void SVGClipPathElement::childrenChanged(const ChildChange& change)
81{
82 SVGGraphicsElement::childrenChanged(change);
83
84 if (change.source == ChildChangeSource::Parser)
85 return;
86
87 if (RenderObject* object = renderer())
88 object->setNeedsLayout();
89}
90
91RenderPtr<RenderElement> SVGClipPathElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
92{
93 return createRenderer<RenderSVGResourceClipper>(*this, WTFMove(style));
94}
95
96}
97