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 Mozilla SVG Project code.
16 : *
17 : * The Initial Developer of the Original Code is the Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2010
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : *
23 : * Alternatively, the contents of this file may be used under the terms of
24 : * either the GNU General Public License Version 2 or later (the "GPL"), or
25 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "DOMSVGPoint.h"
38 : #include "DOMSVGPointList.h"
39 : #include "SVGPoint.h"
40 : #include "SVGAnimatedPointList.h"
41 : #include "nsSVGElement.h"
42 : #include "nsIDOMSVGPoint.h"
43 : #include "nsDOMError.h"
44 : #include "nsIDOMSVGMatrix.h"
45 : #include "nsContentUtils.h" // NS_ENSURE_FINITE
46 : #include "DOMSVGMatrix.h"
47 :
48 : // See the architecture comment in DOMSVGPointList.h.
49 :
50 : using namespace mozilla;
51 :
52 : // We could use NS_IMPL_CYCLE_COLLECTION_1, except that in Unlink() we need to
53 : // clear our list's weak ref to us to be safe. (The other option would be to
54 : // not unlink and rely on the breaking of the other edges in the cycle, as
55 : // NS_SVG_VAL_IMPL_CYCLE_COLLECTION does.)
56 1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(DOMSVGPoint)
57 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGPoint)
58 : // We may not belong to a list, so we must null check tmp->mList.
59 0 : if (tmp->mList) {
60 0 : tmp->mList->mItems[tmp->mListIndex] = nsnull;
61 : }
62 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mList)
63 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
64 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGPoint)
65 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mList)
66 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
67 :
68 0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGPoint)
69 0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGPoint)
70 :
71 : DOMCI_DATA(SVGPoint, DOMSVGPoint)
72 :
73 0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGPoint)
74 0 : NS_INTERFACE_MAP_ENTRY(DOMSVGPoint) // pseudo-interface
75 0 : NS_INTERFACE_MAP_ENTRY(nsIDOMSVGPoint)
76 0 : NS_INTERFACE_MAP_ENTRY(nsISupports)
77 0 : NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGPoint)
78 0 : NS_INTERFACE_MAP_END
79 :
80 :
81 : NS_IMETHODIMP
82 0 : DOMSVGPoint::GetX(float* aX)
83 : {
84 0 : if (mIsAnimValItem && HasOwner()) {
85 0 : Element()->FlushAnimations(); // May make HasOwner() == false
86 : }
87 0 : *aX = HasOwner() ? InternalItem().mX : mPt.mX;
88 0 : return NS_OK;
89 : }
90 :
91 : NS_IMETHODIMP
92 0 : DOMSVGPoint::SetX(float aX)
93 : {
94 0 : if (mIsAnimValItem || mIsReadonly) {
95 0 : return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;
96 : }
97 :
98 0 : NS_ENSURE_FINITE(aX, NS_ERROR_ILLEGAL_VALUE);
99 :
100 0 : if (HasOwner()) {
101 0 : if (InternalItem().mX == aX) {
102 0 : return NS_OK;
103 : }
104 0 : nsAttrValue emptyOrOldValue = Element()->WillChangePointList();
105 0 : InternalItem().mX = aX;
106 0 : Element()->DidChangePointList(emptyOrOldValue);
107 0 : if (mList->AttrIsAnimating()) {
108 0 : Element()->AnimationNeedsResample();
109 : }
110 0 : return NS_OK;
111 : }
112 0 : mPt.mX = aX;
113 0 : return NS_OK;
114 : }
115 :
116 : NS_IMETHODIMP
117 0 : DOMSVGPoint::GetY(float* aY)
118 : {
119 0 : if (mIsAnimValItem && HasOwner()) {
120 0 : Element()->FlushAnimations(); // May make HasOwner() == false
121 : }
122 0 : *aY = HasOwner() ? InternalItem().mY : mPt.mY;
123 0 : return NS_OK;
124 : }
125 :
126 : NS_IMETHODIMP
127 0 : DOMSVGPoint::SetY(float aY)
128 : {
129 0 : if (mIsAnimValItem || mIsReadonly) {
130 0 : return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;
131 : }
132 :
133 0 : NS_ENSURE_FINITE(aY, NS_ERROR_ILLEGAL_VALUE);
134 :
135 0 : if (HasOwner()) {
136 0 : if (InternalItem().mY == aY) {
137 0 : return NS_OK;
138 : }
139 0 : nsAttrValue emptyOrOldValue = Element()->WillChangePointList();
140 0 : InternalItem().mY = aY;
141 0 : Element()->DidChangePointList(emptyOrOldValue);
142 0 : if (mList->AttrIsAnimating()) {
143 0 : Element()->AnimationNeedsResample();
144 : }
145 0 : return NS_OK;
146 : }
147 0 : mPt.mY = aY;
148 0 : return NS_OK;
149 : }
150 :
151 : NS_IMETHODIMP
152 0 : DOMSVGPoint::MatrixTransform(nsIDOMSVGMatrix *matrix,
153 : nsIDOMSVGPoint **_retval)
154 : {
155 0 : nsCOMPtr<DOMSVGMatrix> domMatrix = do_QueryInterface(matrix);
156 0 : if (!domMatrix)
157 0 : return NS_ERROR_DOM_SVG_WRONG_TYPE_ERR;
158 :
159 0 : float x = HasOwner() ? InternalItem().mX : mPt.mX;
160 0 : float y = HasOwner() ? InternalItem().mY : mPt.mY;
161 :
162 0 : gfxPoint pt = domMatrix->Matrix().Transform(gfxPoint(x, y));
163 0 : NS_ADDREF(*_retval = new DOMSVGPoint(pt));
164 :
165 0 : return NS_OK;
166 : }
167 :
168 : void
169 0 : DOMSVGPoint::InsertingIntoList(DOMSVGPointList *aList,
170 : PRUint32 aListIndex,
171 : bool aIsAnimValItem)
172 : {
173 0 : NS_ABORT_IF_FALSE(!HasOwner(), "Inserting item that already has an owner");
174 :
175 0 : mList = aList;
176 0 : mListIndex = aListIndex;
177 0 : mIsReadonly = false;
178 0 : mIsAnimValItem = aIsAnimValItem;
179 :
180 0 : NS_ABORT_IF_FALSE(IndexIsValid(), "Bad index for DOMSVGPoint!");
181 0 : }
182 :
183 : void
184 0 : DOMSVGPoint::RemovingFromList()
185 : {
186 0 : mPt = InternalItem();
187 0 : mList = nsnull;
188 0 : NS_ABORT_IF_FALSE(!mIsReadonly, "mIsReadonly set for list");
189 0 : mIsAnimValItem = false;
190 0 : }
191 :
192 : SVGPoint&
193 0 : DOMSVGPoint::InternalItem()
194 : {
195 0 : return mList->InternalList().mItems[mListIndex];
196 : }
197 :
198 : #ifdef DEBUG
199 : bool
200 0 : DOMSVGPoint::IndexIsValid()
201 : {
202 0 : return mListIndex < mList->InternalList().Length();
203 4392 : }
204 : #endif
205 :
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