1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla SVG project.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Crocodile Clips Ltd..
19 : * Portions created by the Initial Developer are Copyright (C) 2001
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "mozilla/Util.h"
40 :
41 : #include "nsSVGPathGeometryElement.h"
42 : #include "nsIDOMSVGCircleElement.h"
43 : #include "nsSVGLength2.h"
44 : #include "nsGkAtoms.h"
45 : #include "nsSVGUtils.h"
46 : #include "gfxContext.h"
47 :
48 : using namespace mozilla;
49 :
50 : typedef nsSVGPathGeometryElement nsSVGCircleElementBase;
51 :
52 : class nsSVGCircleElement : public nsSVGCircleElementBase,
53 : public nsIDOMSVGCircleElement
54 0 : {
55 : protected:
56 : friend nsresult NS_NewSVGCircleElement(nsIContent **aResult,
57 : already_AddRefed<nsINodeInfo> aNodeInfo);
58 : nsSVGCircleElement(already_AddRefed<nsINodeInfo> aNodeInfo);
59 :
60 : public:
61 : // interfaces:
62 : NS_DECL_ISUPPORTS_INHERITED
63 : NS_DECL_NSIDOMSVGCIRCLEELEMENT
64 :
65 : // xxx I wish we could use virtual inheritance
66 0 : NS_FORWARD_NSIDOMNODE(nsSVGCircleElementBase::)
67 0 : NS_FORWARD_NSIDOMELEMENT(nsSVGCircleElementBase::)
68 0 : NS_FORWARD_NSIDOMSVGELEMENT(nsSVGCircleElementBase::)
69 :
70 : // nsSVGSVGElement methods:
71 : virtual bool HasValidDimensions() const;
72 :
73 : // nsSVGPathGeometryElement methods:
74 : virtual void ConstructPath(gfxContext *aCtx);
75 :
76 : virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
77 :
78 : virtual nsXPCClassInfo* GetClassInfo();
79 : protected:
80 :
81 : virtual LengthAttributesInfo GetLengthInfo();
82 :
83 : enum { CX, CY, R };
84 : nsSVGLength2 mLengthAttributes[3];
85 : static LengthInfo sLengthInfo[3];
86 : };
87 :
88 : nsSVGElement::LengthInfo nsSVGCircleElement::sLengthInfo[3] =
89 : {
90 : { &nsGkAtoms::cx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::X },
91 : { &nsGkAtoms::cy, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::Y },
92 : { &nsGkAtoms::r, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::XY }
93 : };
94 :
95 0 : NS_IMPL_NS_NEW_SVG_ELEMENT(Circle)
96 :
97 : //----------------------------------------------------------------------
98 : // nsISupports methods
99 :
100 0 : NS_IMPL_ADDREF_INHERITED(nsSVGCircleElement,nsSVGCircleElementBase)
101 0 : NS_IMPL_RELEASE_INHERITED(nsSVGCircleElement,nsSVGCircleElementBase)
102 :
103 0 : DOMCI_NODE_DATA(SVGCircleElement, nsSVGCircleElement)
104 :
105 0 : NS_INTERFACE_TABLE_HEAD(nsSVGCircleElement)
106 0 : NS_NODE_INTERFACE_TABLE5(nsSVGCircleElement, nsIDOMNode, nsIDOMElement,
107 : nsIDOMSVGElement, nsIDOMSVGTests,
108 : nsIDOMSVGCircleElement)
109 0 : NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGCircleElement)
110 0 : NS_INTERFACE_MAP_END_INHERITING(nsSVGCircleElementBase)
111 :
112 : //----------------------------------------------------------------------
113 : // Implementation
114 :
115 0 : nsSVGCircleElement::nsSVGCircleElement(already_AddRefed<nsINodeInfo> aNodeInfo)
116 0 : : nsSVGCircleElementBase(aNodeInfo)
117 : {
118 0 : }
119 :
120 : //----------------------------------------------------------------------
121 : // nsIDOMNode methods
122 :
123 0 : NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGCircleElement)
124 :
125 : //----------------------------------------------------------------------
126 : // nsIDOMSVGCircleElement methods
127 :
128 : /* readonly attribute nsIDOMSVGAnimatedLength cx; */
129 0 : NS_IMETHODIMP nsSVGCircleElement::GetCx(nsIDOMSVGAnimatedLength * *aCx)
130 : {
131 0 : return mLengthAttributes[CX].ToDOMAnimatedLength(aCx, this);
132 : }
133 :
134 : /* readonly attribute nsIDOMSVGAnimatedLength cy; */
135 0 : NS_IMETHODIMP nsSVGCircleElement::GetCy(nsIDOMSVGAnimatedLength * *aCy)
136 : {
137 0 : return mLengthAttributes[CY].ToDOMAnimatedLength(aCy, this);
138 : }
139 :
140 : /* readonly attribute nsIDOMSVGAnimatedLength r; */
141 0 : NS_IMETHODIMP nsSVGCircleElement::GetR(nsIDOMSVGAnimatedLength * *aR)
142 : {
143 0 : return mLengthAttributes[R].ToDOMAnimatedLength(aR, this);
144 : }
145 :
146 : //----------------------------------------------------------------------
147 : // nsSVGElement methods
148 :
149 : /* virtual */ bool
150 0 : nsSVGCircleElement::HasValidDimensions() const
151 : {
152 0 : return mLengthAttributes[R].IsExplicitlySet() &&
153 0 : mLengthAttributes[R].GetAnimValInSpecifiedUnits() > 0;
154 : }
155 :
156 : nsSVGElement::LengthAttributesInfo
157 0 : nsSVGCircleElement::GetLengthInfo()
158 : {
159 : return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
160 0 : ArrayLength(sLengthInfo));
161 : }
162 :
163 : //----------------------------------------------------------------------
164 : // nsSVGPathGeometryElement methods
165 :
166 : void
167 0 : nsSVGCircleElement::ConstructPath(gfxContext *aCtx)
168 : {
169 : float x, y, r;
170 :
171 0 : GetAnimatedLengthValues(&x, &y, &r, nsnull);
172 :
173 0 : if (r > 0.0f)
174 0 : aCtx->Arc(gfxPoint(x, y), r, 0, 2*M_PI);
175 0 : }
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