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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsSVGPolyElement.h"
#include "DOMSVGPointList.h"
#include "mozilla/gfx/2D.h"
#include "SVGContentUtils.h"
using namespace mozilla;
using namespace mozilla::gfx;
//----------------------------------------------------------------------
// nsISupports methods
NS_IMPL_ADDREF_INHERITED(nsSVGPolyElement,nsSVGPolyElementBase)
NS_IMPL_RELEASE_INHERITED(nsSVGPolyElement,nsSVGPolyElementBase)
NS_INTERFACE_MAP_BEGIN(nsSVGPolyElement)
NS_INTERFACE_MAP_END_INHERITING(nsSVGPolyElementBase)
//----------------------------------------------------------------------
// Implementation
nsSVGPolyElement::nsSVGPolyElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: nsSVGPolyElementBase(aNodeInfo)
{
}
nsSVGPolyElement::~nsSVGPolyElement()
{
}
already_AddRefed<DOMSVGPointList>
nsSVGPolyElement::Points()
{
void *key = mPoints.GetBaseValKey();
RefPtr<DOMSVGPointList> points = DOMSVGPointList::GetDOMWrapper(key, this, false);
return points.forget();
}
already_AddRefed<DOMSVGPointList>
nsSVGPolyElement::AnimatedPoints()
{
void *key = mPoints.GetAnimValKey();
RefPtr<DOMSVGPointList> points = DOMSVGPointList::GetDOMWrapper(key, this, true);
return points.forget();
}
//----------------------------------------------------------------------
// nsIContent methods
NS_IMETHODIMP_(bool)
nsSVGPolyElement::IsAttributeMapped(const nsIAtom* name) const
{
static const MappedAttributeEntry* const map[] = {
sMarkersMap
};
return FindAttributeDependence(name, map) ||
nsSVGPolyElementBase::IsAttributeMapped(name);
}
//----------------------------------------------------------------------
// nsSVGElement methods
/* virtual */ bool
nsSVGPolyElement::HasValidDimensions() const
{
return !mPoints.GetAnimValue().IsEmpty();
}
//----------------------------------------------------------------------
// nsSVGPathGeometryElement methods
bool
nsSVGPolyElement::AttributeDefinesGeometry(const nsIAtom *aName)
{
if (aName == nsGkAtoms::points)
return true;
return false;
}
void
nsSVGPolyElement::GetMarkPoints(nsTArray<nsSVGMark> *aMarks)
{
const SVGPointList &points = mPoints.GetAnimValue();
if (!points.Length())
return;
float px = points[0].mX, py = points[0].mY, prevAngle = 0.0;
aMarks->AppendElement(nsSVGMark(px, py, 0, nsSVGMark::eStart));
for (uint32_t i = 1; i < points.Length(); ++i) {
float x = points[i].mX;
float y = points[i].mY;
float angle = atan2(y-py, x-px);
// Vertex marker.
if (i == 1) {
aMarks->ElementAt(0).angle = angle;
} else {
aMarks->ElementAt(aMarks->Length() - 1).angle =
SVGContentUtils::AngleBisect(prevAngle, angle);
}
aMarks->AppendElement(nsSVGMark(x, y, 0, nsSVGMark::eMid));
prevAngle = angle;
px = x;
py = y;
}
aMarks->LastElement().angle = prevAngle;
aMarks->LastElement().type = nsSVGMark::eEnd;
}
bool
nsSVGPolyElement::GetGeometryBounds(Rect* aBounds,
const StrokeOptions& aStrokeOptions,
const Matrix& aToBoundsSpace,
const Matrix* aToNonScalingStrokeSpace)
{
const SVGPointList &points = mPoints.GetAnimValue();
if (!points.Length()) {
// Rendering of the element is disabled
aBounds->SetEmpty();
return true;
}
if (aStrokeOptions.mLineWidth > 0 || aToNonScalingStrokeSpace) {
// We don't handle non-scaling-stroke or stroke-miterlimit etc. yet
return false;
}
if (aToBoundsSpace.IsRectilinear()) {
// We can avoid transforming each point and just transform the result.
// Important for large point lists.
Rect bounds(points[0], Size());
for (uint32_t i = 1; i < points.Length(); ++i) {
bounds.ExpandToEnclose(points[i]);
}
*aBounds = aToBoundsSpace.TransformBounds(bounds);
} else {
*aBounds = Rect(aToBoundsSpace.TransformPoint(points[0]), Size());
for (uint32_t i = 1; i < points.Length(); ++i) {
aBounds->ExpandToEnclose(aToBoundsSpace.TransformPoint(points[i]));
}
}
return true;
}
|
