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
|
/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
*
* 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 "third_party/blink/renderer/core/svg/svg_path_element.h"
#include "third_party/blink/renderer/core/layout/layout_object.h"
#include "third_party/blink/renderer/core/svg/svg_mpath_element.h"
#include "third_party/blink/renderer/core/svg/svg_path_query.h"
#include "third_party/blink/renderer/core/svg/svg_path_utilities.h"
#include "third_party/blink/renderer/core/svg/svg_point_tear_off.h"
namespace blink {
inline SVGPathElement::SVGPathElement(Document& document)
: SVGGeometryElement(SVGNames::pathTag, document),
path_(SVGAnimatedPath::Create(this, SVGNames::dAttr, CSSPropertyD)) {
AddToPropertyMap(path_);
}
void SVGPathElement::Trace(blink::Visitor* visitor) {
visitor->Trace(path_);
SVGGeometryElement::Trace(visitor);
}
DEFINE_NODE_FACTORY(SVGPathElement)
Path SVGPathElement::AttributePath() const {
return path_->CurrentValue()->GetStylePath()->GetPath();
}
const StylePath* SVGPathElement::GetStylePath() const {
if (LayoutObject* layout_object = this->GetLayoutObject()) {
const StylePath* style_path = layout_object->StyleRef().SvgStyle().D();
if (style_path)
return style_path;
return StylePath::EmptyPath();
}
return path_->CurrentValue()->GetStylePath();
}
float SVGPathElement::ComputePathLength() const {
return GetStylePath()->length();
}
Path SVGPathElement::AsPath() const {
return GetStylePath()->GetPath();
}
float SVGPathElement::getTotalLength() {
GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
return SVGPathQuery(PathByteStream()).GetTotalLength();
}
SVGPointTearOff* SVGPathElement::getPointAtLength(float length) {
GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
FloatPoint point = SVGPathQuery(PathByteStream()).GetPointAtLength(length);
return SVGPointTearOff::CreateDetached(point);
}
void SVGPathElement::SvgAttributeChanged(const QualifiedName& attr_name) {
if (attr_name == SVGNames::dAttr) {
InvalidateMPathDependencies();
GeometryPresentationAttributeChanged(attr_name);
return;
}
SVGGeometryElement::SvgAttributeChanged(attr_name);
}
void SVGPathElement::CollectStyleForPresentationAttribute(
const QualifiedName& name,
const AtomicString& value,
MutableCSSPropertyValueSet* style) {
SVGAnimatedPropertyBase* property = PropertyFromAttribute(name);
if (property == path_) {
SVGAnimatedPath* path = this->GetPath();
// If this is a <use> instance, return the referenced path to maximize
// geometry sharing.
if (const SVGElement* element = CorrespondingElement())
path = ToSVGPathElement(element)->GetPath();
AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(),
path->CssValue());
return;
}
SVGGeometryElement::CollectStyleForPresentationAttribute(name, value, style);
}
void SVGPathElement::InvalidateMPathDependencies() {
// <mpath> can only reference <path> but this dependency is not handled in
// markForLayoutAndParentResourceInvalidation so we update any mpath
// dependencies manually.
if (SVGElementSet* dependencies = SetOfIncomingReferences()) {
for (SVGElement* element : *dependencies) {
if (auto* mpath = ToSVGMPathElementOrNull(*element))
mpath->TargetPathChanged();
}
}
}
Node::InsertionNotificationRequest SVGPathElement::InsertedInto(
ContainerNode* root_parent) {
SVGGeometryElement::InsertedInto(root_parent);
InvalidateMPathDependencies();
return kInsertionDone;
}
void SVGPathElement::RemovedFrom(ContainerNode* root_parent) {
SVGGeometryElement::RemovedFrom(root_parent);
InvalidateMPathDependencies();
}
FloatRect SVGPathElement::GetBBox() {
// We want the exact bounds.
return SVGPathElement::AsPath().BoundingRect();
}
} // namespace blink
|
