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 : * William Cook <william.cook@crocodile-clips.com> (original author)
24 : * Alex Fritze <alex.fritze@crocodile-clips.com>
25 : *
26 : * Alternatively, the contents of this file may be used under the terms of
27 : * either of the GNU General Public License Version 2 or later (the "GPL"),
28 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 : * in which case the provisions of the GPL or the LGPL are applicable instead
30 : * of those above. If you wish to allow use of your version of this file only
31 : * under the terms of either the GPL or the LGPL, and not to allow others to
32 : * use your version of this file under the terms of the MPL, indicate your
33 : * decision by deleting the provisions above and replace them with the notice
34 : * and other provisions required by the GPL or the LGPL. If you do not delete
35 : * the provisions above, a recipient may use your version of this file under
36 : * the terms of any one of the MPL, the GPL or the LGPL.
37 : *
38 : * ***** END LICENSE BLOCK ***** */
39 :
40 : #include "mozilla/Util.h"
41 :
42 : #include "nsSVGPathGeometryElement.h"
43 : #include "nsIDOMSVGEllipseElement.h"
44 : #include "nsSVGLength2.h"
45 : #include "nsGkAtoms.h"
46 : #include "nsSVGUtils.h"
47 : #include "gfxContext.h"
48 :
49 : using namespace mozilla;
50 :
51 : typedef nsSVGPathGeometryElement nsSVGEllipseElementBase;
52 :
53 : class nsSVGEllipseElement : public nsSVGEllipseElementBase,
54 : public nsIDOMSVGEllipseElement
55 0 : {
56 : protected:
57 : friend nsresult NS_NewSVGEllipseElement(nsIContent **aResult,
58 : already_AddRefed<nsINodeInfo> aNodeInfo);
59 : nsSVGEllipseElement(already_AddRefed<nsINodeInfo> aNodeInfo);
60 :
61 : public:
62 : // interfaces:
63 : NS_DECL_ISUPPORTS_INHERITED
64 : NS_DECL_NSIDOMSVGELLIPSEELEMENT
65 :
66 : // xxx I wish we could use virtual inheritance
67 0 : NS_FORWARD_NSIDOMNODE(nsSVGEllipseElementBase::)
68 0 : NS_FORWARD_NSIDOMELEMENT(nsSVGEllipseElementBase::)
69 0 : NS_FORWARD_NSIDOMSVGELEMENT(nsSVGEllipseElementBase::)
70 :
71 : // nsSVGSVGElement methods:
72 : virtual bool HasValidDimensions() const;
73 :
74 : // nsSVGPathGeometryElement methods:
75 : virtual void ConstructPath(gfxContext *aCtx);
76 :
77 : virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
78 :
79 : virtual nsXPCClassInfo* GetClassInfo();
80 : protected:
81 :
82 : virtual LengthAttributesInfo GetLengthInfo();
83 :
84 : enum { CX, CY, RX, RY };
85 : nsSVGLength2 mLengthAttributes[4];
86 : static LengthInfo sLengthInfo[4];
87 : };
88 :
89 : nsSVGElement::LengthInfo nsSVGEllipseElement::sLengthInfo[4] =
90 : {
91 : { &nsGkAtoms::cx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::X },
92 : { &nsGkAtoms::cy, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::Y },
93 : { &nsGkAtoms::rx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::X },
94 : { &nsGkAtoms::ry, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, nsSVGUtils::Y },
95 : };
96 :
97 0 : NS_IMPL_NS_NEW_SVG_ELEMENT(Ellipse)
98 :
99 : //----------------------------------------------------------------------
100 : // nsISupports methods
101 :
102 0 : NS_IMPL_ADDREF_INHERITED(nsSVGEllipseElement,nsSVGEllipseElementBase)
103 0 : NS_IMPL_RELEASE_INHERITED(nsSVGEllipseElement,nsSVGEllipseElementBase)
104 :
105 0 : DOMCI_NODE_DATA(SVGEllipseElement, nsSVGEllipseElement)
106 :
107 0 : NS_INTERFACE_TABLE_HEAD(nsSVGEllipseElement)
108 0 : NS_NODE_INTERFACE_TABLE5(nsSVGEllipseElement, nsIDOMNode, nsIDOMElement,
109 : nsIDOMSVGElement, nsIDOMSVGTests,
110 : nsIDOMSVGEllipseElement)
111 0 : NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGEllipseElement)
112 0 : NS_INTERFACE_MAP_END_INHERITING(nsSVGEllipseElementBase)
113 :
114 : //----------------------------------------------------------------------
115 : // Implementation
116 :
117 0 : nsSVGEllipseElement::nsSVGEllipseElement(already_AddRefed<nsINodeInfo> aNodeInfo)
118 0 : : nsSVGEllipseElementBase(aNodeInfo)
119 : {
120 0 : }
121 :
122 : //----------------------------------------------------------------------
123 : // nsIDOMNode methods
124 :
125 0 : NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGEllipseElement)
126 :
127 : //----------------------------------------------------------------------
128 : // nsIDOMSVGEllipseElement methods
129 :
130 : /* readonly attribute nsIDOMSVGAnimatedLength cx; */
131 0 : NS_IMETHODIMP nsSVGEllipseElement::GetCx(nsIDOMSVGAnimatedLength * *aCx)
132 : {
133 0 : return mLengthAttributes[CX].ToDOMAnimatedLength(aCx, this);
134 : }
135 :
136 : /* readonly attribute nsIDOMSVGAnimatedLength cy; */
137 0 : NS_IMETHODIMP nsSVGEllipseElement::GetCy(nsIDOMSVGAnimatedLength * *aCy)
138 : {
139 0 : return mLengthAttributes[CY].ToDOMAnimatedLength(aCy, this);
140 : }
141 :
142 : /* readonly attribute nsIDOMSVGAnimatedLength rx; */
143 0 : NS_IMETHODIMP nsSVGEllipseElement::GetRx(nsIDOMSVGAnimatedLength * *aRx)
144 : {
145 0 : return mLengthAttributes[RX].ToDOMAnimatedLength(aRx, this);
146 : }
147 :
148 : /* readonly attribute nsIDOMSVGAnimatedLength ry; */
149 0 : NS_IMETHODIMP nsSVGEllipseElement::GetRy(nsIDOMSVGAnimatedLength * *aRy)
150 : {
151 0 : return mLengthAttributes[RY].ToDOMAnimatedLength(aRy, this);
152 : }
153 :
154 : //----------------------------------------------------------------------
155 : // nsSVGElement methods
156 :
157 : /* virtual */ bool
158 0 : nsSVGEllipseElement::HasValidDimensions() const
159 : {
160 0 : return mLengthAttributes[RX].IsExplicitlySet() &&
161 0 : mLengthAttributes[RX].GetAnimValInSpecifiedUnits() > 0 &&
162 0 : mLengthAttributes[RY].IsExplicitlySet() &&
163 0 : mLengthAttributes[RY].GetAnimValInSpecifiedUnits() > 0;
164 : }
165 :
166 : nsSVGElement::LengthAttributesInfo
167 0 : nsSVGEllipseElement::GetLengthInfo()
168 : {
169 : return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
170 0 : ArrayLength(sLengthInfo));
171 : }
172 :
173 : //----------------------------------------------------------------------
174 : // nsSVGPathGeometryElement methods
175 :
176 : void
177 0 : nsSVGEllipseElement::ConstructPath(gfxContext *aCtx)
178 : {
179 : float x, y, rx, ry;
180 :
181 0 : GetAnimatedLengthValues(&x, &y, &rx, &ry, nsnull);
182 :
183 0 : if (rx > 0.0f && ry > 0.0f) {
184 0 : aCtx->Save();
185 0 : aCtx->Translate(gfxPoint(x, y));
186 0 : aCtx->Scale(rx, ry);
187 0 : aCtx->Arc(gfxPoint(0, 0), 1, 0, 2 * M_PI);
188 0 : aCtx->Restore();
189 : }
190 0 : }
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