/
SVGTextPathElement.cpp
188 lines (158 loc) · 6.4 KB
/
SVGTextPathElement.cpp
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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/*
* Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2010 Rob Buis <rwlbuis@gmail.com>
* 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 "SVGTextPathElement.h"
#include "NodeName.h"
#include "RenderSVGResource.h"
#include "RenderSVGTextPath.h"
#include "SVGDocumentExtensions.h"
#include "SVGElementInlines.h"
#include "SVGNames.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGTextPathElement);
inline SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document& document)
: SVGTextContentElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
, SVGURIReference(this)
{
ASSERT(hasTagName(SVGNames::textPathTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::startOffsetAttr, &SVGTextPathElement::m_startOffset>();
PropertyRegistry::registerProperty<SVGNames::methodAttr, SVGTextPathMethodType, &SVGTextPathElement::m_method>();
PropertyRegistry::registerProperty<SVGNames::spacingAttr, SVGTextPathSpacingType, &SVGTextPathElement::m_spacing>();
});
}
Ref<SVGTextPathElement> SVGTextPathElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGTextPathElement(tagName, document));
}
SVGTextPathElement::~SVGTextPathElement()
{
clearResourceReferences();
}
void SVGTextPathElement::clearResourceReferences()
{
removeElementReference();
}
void SVGTextPathElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
SVGParsingError parseError = NoError;
switch (name.nodeName()) {
case AttributeNames::startOffsetAttr:
m_startOffset->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Other, newValue, parseError));
break;
case AttributeNames::methodAttr: {
SVGTextPathMethodType propertyValue = SVGPropertyTraits<SVGTextPathMethodType>::fromString(newValue);
if (propertyValue > 0)
m_method->setBaseValInternal<SVGTextPathMethodType>(propertyValue);
break;
}
case AttributeNames::spacingAttr: {
SVGTextPathSpacingType propertyValue = SVGPropertyTraits<SVGTextPathSpacingType>::fromString(newValue);
if (propertyValue > 0)
m_spacing->setBaseValInternal<SVGTextPathSpacingType>(propertyValue);
break;
}
default:
break;
}
reportAttributeParsingError(parseError, name, newValue);
SVGURIReference::parseAttribute(name, newValue);
SVGTextContentElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGTextPathElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
if (attrName == SVGNames::startOffsetAttr)
updateRelativeLengthsInformation();
updateSVGRendererForElementChange();
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
buildPendingResource();
updateSVGRendererForElementChange();
return;
}
SVGTextContentElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGTextPathElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGTextPath>(*this, WTFMove(style));
}
bool SVGTextPathElement::childShouldCreateRenderer(const Node& child) const
{
if (child.isTextNode()
|| child.hasTagName(SVGNames::aTag)
|| child.hasTagName(SVGNames::trefTag)
|| child.hasTagName(SVGNames::tspanTag))
return true;
return false;
}
bool SVGTextPathElement::rendererIsNeeded(const RenderStyle& style)
{
if (parentNode()
&& (parentNode()->hasTagName(SVGNames::aTag)
|| parentNode()->hasTagName(SVGNames::textTag)))
return StyledElement::rendererIsNeeded(style);
return false;
}
void SVGTextPathElement::buildPendingResource()
{
clearResourceReferences();
if (!isConnected())
return;
auto target = SVGURIReference::targetElementFromIRIString(href(), treeScope());
if (!target.element) {
// Do not register as pending if we are already pending this resource.
if (document().accessSVGExtensions().isPendingResource(*this, target.identifier))
return;
if (!target.identifier.isEmpty()) {
document().accessSVGExtensions().addPendingResource(target.identifier, *this);
ASSERT(hasPendingResources());
}
} else if (target.element->hasTagName(SVGNames::pathTag))
downcast<SVGElement>(*target.element).addReferencingElement(*this);
}
Node::InsertedIntoAncestorResult SVGTextPathElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
SVGTextContentElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
return InsertedIntoAncestorResult::NeedsPostInsertionCallback;
}
void SVGTextPathElement::didFinishInsertingNode()
{
SVGTextContentElement::buildPendingResource();
buildPendingResource();
}
void SVGTextPathElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
{
SVGTextContentElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
if (removalType.disconnectedFromDocument)
clearResourceReferences();
}
bool SVGTextPathElement::selfHasRelativeLengths() const
{
return startOffset().isRelative()
|| SVGTextContentElement::selfHasRelativeLengths();
}
}