1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2018-2019 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "SVGPathElement.h"
#include "LegacyRenderSVGPath.h"
#include "RenderSVGPath.h"
#include "RenderSVGResource.h"
#include "SVGDocumentExtensions.h"
#include "SVGElementTypeHelpers.h"
#include "SVGMPathElement.h"
#include "SVGNames.h"
#include "SVGPathUtilities.h"
#include "SVGPoint.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGPathElement);
inline SVGPathElement::SVGPathElement(const QualifiedName& tagName, Document& document)
: SVGGeometryElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(SVGNames::pathTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::dAttr, &SVGPathElement::m_pathSegList>();
});
}
Ref<SVGPathElement> SVGPathElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGPathElement(tagName, document));
}
void SVGPathElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
if (name == SVGNames::dAttr) {
if (!m_pathSegList->baseVal()->parse(newValue))
document().accessSVGExtensions().reportError("Problem parsing d=\"" + newValue + "\"");
}
SVGGeometryElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGPathElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
ASSERT(attrName == SVGNames::dAttr);
InstanceInvalidationGuard guard(*this);
invalidateMPathDependencies();
#if ENABLE(LAYER_BASED_SVG_ENGINE)
if (auto* path = dynamicDowncast<RenderSVGPath>(renderer()))
path->setNeedsShapeUpdate();
#endif
if (auto* path = dynamicDowncast<LegacyRenderSVGPath>(renderer()))
path->setNeedsShapeUpdate();
updateSVGRendererForElementChange();
return;
}
SVGGeometryElement::svgAttributeChanged(attrName);
}
void SVGPathElement::invalidateMPathDependencies()
{
// <mpath> can only reference <path> but this dependency is not handled in
// markForLayoutAndParentResourceInvalidation so we update any mpath dependencies manually.
for (auto& element : referencingElements()) {
if (is<SVGMPathElement>(element))
downcast<SVGMPathElement>(element.get()).targetPathChanged();
}
}
Node::InsertedIntoAncestorResult SVGPathElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
auto result = SVGGeometryElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
invalidateMPathDependencies();
return result;
}
void SVGPathElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
{
SVGGeometryElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
invalidateMPathDependencies();
}
float SVGPathElement::getTotalLength() const
{
return getTotalLengthOfSVGPathByteStream(pathByteStream());
}
ExceptionOr<Ref<SVGPoint>> SVGPathElement::getPointAtLength(float distance) const
{
// Spec: Clamp distance to [0, length].
distance = clampTo<float>(distance, 0, getTotalLength());
// Spec: Return a newly created, detached SVGPoint object.
return SVGPoint::create(getPointAtLengthOfSVGPathByteStream(pathByteStream(), distance));
}
unsigned SVGPathElement::getPathSegAtLength(float length) const
{
return getSVGPathSegAtLengthFromSVGPathByteStream(pathByteStream(), length);
}
FloatRect SVGPathElement::getBBox(StyleUpdateStrategy styleUpdateStrategy)
{
if (styleUpdateStrategy == AllowStyleUpdate)
document().updateLayoutIgnorePendingStylesheets();
// FIXME: Eventually we should support getBBox for detached elements.
// FIXME: If the path is null it means we're calling getBBox() before laying out this element,
// which is an error.
#if ENABLE(LAYER_BASED_SVG_ENGINE)
if (auto* path = dynamicDowncast<RenderSVGPath>(renderer()); path && path->hasPath())
return path->path().boundingRect();
#endif
if (auto* path = dynamicDowncast<LegacyRenderSVGPath>(renderer()); path && path->hasPath())
return path->path().boundingRect();
return { };
}
RenderPtr<RenderElement> SVGPathElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
#if ENABLE(LAYER_BASED_SVG_ENGINE)
if (document().settings().layerBasedSVGEngineEnabled())
return createRenderer<RenderSVGPath>(*this, WTFMove(style));
#endif
return createRenderer<LegacyRenderSVGPath>(*this, WTFMove(style));
}
}
|
