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
|
/* -*- 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 "ComputedStyle.h"
#include "mozilla/dom/SVGCircleElement.h"
#include "mozilla/gfx/2D.h"
#include "nsGkAtoms.h"
#include "mozilla/dom/SVGCircleElementBinding.h"
#include "mozilla/dom/SVGLengthBinding.h"
#include "SVGGeometryProperty.h"
NS_IMPL_NS_NEW_SVG_ELEMENT(Circle)
using namespace mozilla::gfx;
namespace mozilla {
namespace dom {
JSObject* SVGCircleElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return SVGCircleElement_Binding::Wrap(aCx, this, aGivenProto);
}
SVGElement::LengthInfo SVGCircleElement::sLengthInfo[3] = {
{nsGkAtoms::cx, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::X},
{nsGkAtoms::cy, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::Y},
{nsGkAtoms::r, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::XY}};
//----------------------------------------------------------------------
// Implementation
SVGCircleElement::SVGCircleElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: SVGCircleElementBase(std::move(aNodeInfo)) {}
bool SVGCircleElement::IsAttributeMapped(const nsAtom* aAttribute) const {
return IsInLengthInfo(aAttribute, sLengthInfo) ||
SVGCircleElementBase::IsAttributeMapped(aAttribute);
}
namespace SVGT = SVGGeometryProperty::Tags;
//----------------------------------------------------------------------
// nsINode methods
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGCircleElement)
//----------------------------------------------------------------------
already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::Cx() {
return mLengthAttributes[ATTR_CX].ToDOMAnimatedLength(this);
}
already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::Cy() {
return mLengthAttributes[ATTR_CY].ToDOMAnimatedLength(this);
}
already_AddRefed<DOMSVGAnimatedLength> SVGCircleElement::R() {
return mLengthAttributes[ATTR_R].ToDOMAnimatedLength(this);
}
//----------------------------------------------------------------------
// SVGElement methods
/* virtual */
bool SVGCircleElement::HasValidDimensions() const {
float r;
if (SVGGeometryProperty::ResolveAll<SVGT::R>(this, &r)) {
return r > 0;
}
// This function might be called for an element in display:none subtree
// (e.g. SMIL animateMotion), we fall back to use SVG attributes.
return mLengthAttributes[ATTR_R].IsExplicitlySet() &&
mLengthAttributes[ATTR_R].GetAnimValInSpecifiedUnits() > 0;
}
SVGElement::LengthAttributesInfo SVGCircleElement::GetLengthInfo() {
return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
ArrayLength(sLengthInfo));
}
//----------------------------------------------------------------------
// SVGGeometryElement methods
bool SVGCircleElement::GetGeometryBounds(
Rect* aBounds, const StrokeOptions& aStrokeOptions,
const Matrix& aToBoundsSpace, const Matrix* aToNonScalingStrokeSpace) {
float x, y, r;
DebugOnly<bool> ok =
SVGGeometryProperty::ResolveAll<SVGT::Cx, SVGT::Cy, SVGT::R>(this, &x, &y,
&r);
MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
if (r <= 0.f) {
// Rendering of the element is disabled
*aBounds = Rect(aToBoundsSpace.TransformPoint(Point(x, y)), Size());
return true;
}
if (aToBoundsSpace.IsRectilinear()) {
// Optimize the case where we can treat the circle as a rectangle and
// still get tight bounds.
if (aStrokeOptions.mLineWidth > 0.f) {
if (aToNonScalingStrokeSpace) {
if (aToNonScalingStrokeSpace->IsRectilinear()) {
MOZ_ASSERT(!aToNonScalingStrokeSpace->IsSingular());
Rect userBounds(x - r, y - r, 2 * r, 2 * r);
SVGContentUtils::RectilinearGetStrokeBounds(
userBounds, aToBoundsSpace, *aToNonScalingStrokeSpace,
aStrokeOptions.mLineWidth, aBounds);
return true;
}
return false;
}
r += aStrokeOptions.mLineWidth / 2.f;
}
Rect rect(x - r, y - r, 2 * r, 2 * r);
*aBounds = aToBoundsSpace.TransformBounds(rect);
return true;
}
return false;
}
already_AddRefed<Path> SVGCircleElement::BuildPath(PathBuilder* aBuilder) {
float x, y, r;
if (!SVGGeometryProperty::ResolveAll<SVGT::Cx, SVGT::Cy, SVGT::R>(this, &x,
&y, &r)) {
// This function might be called for element in display:none subtree
// (e.g. getTotalLength), we fall back to use SVG attributes.
GetAnimatedLengthValues(&x, &y, &r, nullptr);
}
if (r <= 0.0f) {
return nullptr;
}
aBuilder->Arc(Point(x, y), r, 0, Float(2 * M_PI));
return aBuilder->Finish();
}
bool SVGCircleElement::IsLengthChangedViaCSS(const ComputedStyle& aNewStyle,
const ComputedStyle& aOldStyle) {
const auto& newSVGReset = *aNewStyle.StyleSVGReset();
const auto& oldSVGReset = *aOldStyle.StyleSVGReset();
return newSVGReset.mCx != oldSVGReset.mCx ||
newSVGReset.mCy != oldSVGReset.mCy || newSVGReset.mR != oldSVGReset.mR;
}
nsCSSPropertyID SVGCircleElement::GetCSSPropertyIdForAttrEnum(
uint8_t aAttrEnum) {
switch (aAttrEnum) {
case ATTR_CX:
return eCSSProperty_cx;
case ATTR_CY:
return eCSSProperty_cy;
case ATTR_R:
return eCSSProperty_r;
default:
MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
return eCSSProperty_UNKNOWN;
}
}
} // namespace dom
} // namespace mozilla
|
