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 : * Robert Longson.
19 : * Portions created by the Initial Developer are Copyright (C) 2007
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Robert Longson <longsonr@gmail.com> (original author)
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * 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 "nsSVGTSpanFrame.h"
40 : #include "nsISVGGlyphFragmentNode.h"
41 : #include "nsSVGGraphicElement.h"
42 : #include "nsSVGAElement.h"
43 : #include "nsSVGUtils.h"
44 : #include "gfxMatrix.h"
45 : #include "SVGLengthList.h"
46 :
47 : // <a> elements can contain text. nsSVGGlyphFrames expect to have
48 : // a class derived from nsSVGTextContainerFrame as a parent. We
49 : // also need something that implements nsISVGGlyphFragmentNode to get
50 : // the text DOM to work.
51 :
52 : using namespace mozilla;
53 :
54 : typedef nsSVGTSpanFrame nsSVGAFrameBase;
55 :
56 : class nsSVGAFrame : public nsSVGAFrameBase
57 0 : {
58 : friend nsIFrame*
59 : NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
60 : protected:
61 0 : nsSVGAFrame(nsStyleContext* aContext) :
62 0 : nsSVGAFrameBase(aContext) {}
63 :
64 : public:
65 : NS_DECL_FRAMEARENA_HELPERS
66 :
67 : #ifdef DEBUG
68 : NS_IMETHOD Init(nsIContent* aContent,
69 : nsIFrame* aParent,
70 : nsIFrame* aPrevInFlow);
71 : #endif
72 :
73 : // nsIFrame:
74 : NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
75 : nsIAtom* aAttribute,
76 : PRInt32 aModType);
77 :
78 : /**
79 : * Get the "type" of the frame
80 : *
81 : * @see nsGkAtoms::svgAFrame
82 : */
83 : virtual nsIAtom* GetType() const;
84 :
85 : #ifdef DEBUG
86 0 : NS_IMETHOD GetFrameName(nsAString& aResult) const
87 : {
88 0 : return MakeFrameName(NS_LITERAL_STRING("SVGA"), aResult);
89 : }
90 : #endif
91 : // nsISVGChildFrame interface:
92 : virtual void NotifySVGChanged(PRUint32 aFlags);
93 :
94 : // nsSVGContainerFrame methods:
95 : virtual gfxMatrix GetCanvasTM();
96 :
97 : // nsSVGTextContainerFrame methods:
98 : virtual void GetXY(mozilla::SVGUserUnitList *aX, mozilla::SVGUserUnitList *aY);
99 : virtual void GetDxDy(mozilla::SVGUserUnitList *aDx, mozilla::SVGUserUnitList *aDy);
100 0 : virtual const SVGNumberList* GetRotate() {
101 0 : return nsnull;
102 : }
103 :
104 : private:
105 : nsAutoPtr<gfxMatrix> mCanvasTM;
106 : };
107 :
108 : //----------------------------------------------------------------------
109 : // Implementation
110 :
111 : nsIFrame*
112 0 : NS_NewSVGAFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
113 : {
114 0 : return new (aPresShell) nsSVGAFrame(aContext);
115 : }
116 :
117 0 : NS_IMPL_FRAMEARENA_HELPERS(nsSVGAFrame)
118 :
119 : //----------------------------------------------------------------------
120 : // nsIFrame methods
121 : #ifdef DEBUG
122 : NS_IMETHODIMP
123 0 : nsSVGAFrame::Init(nsIContent* aContent,
124 : nsIFrame* aParent,
125 : nsIFrame* aPrevInFlow)
126 : {
127 0 : nsCOMPtr<nsIDOMSVGAElement> elem = do_QueryInterface(aContent);
128 0 : NS_ASSERTION(elem,
129 : "Trying to construct an SVGAFrame for a "
130 : "content element that doesn't support the right interfaces");
131 :
132 0 : return nsSVGAFrameBase::Init(aContent, aParent, aPrevInFlow);
133 : }
134 : #endif /* DEBUG */
135 :
136 : NS_IMETHODIMP
137 0 : nsSVGAFrame::AttributeChanged(PRInt32 aNameSpaceID,
138 : nsIAtom* aAttribute,
139 : PRInt32 aModType)
140 : {
141 0 : if (aNameSpaceID == kNameSpaceID_None &&
142 : aAttribute == nsGkAtoms::transform) {
143 :
144 0 : NotifySVGChanged(TRANSFORM_CHANGED);
145 : }
146 :
147 0 : return NS_OK;
148 : }
149 :
150 : nsIAtom *
151 0 : nsSVGAFrame::GetType() const
152 : {
153 0 : return nsGkAtoms::svgAFrame;
154 : }
155 :
156 : //----------------------------------------------------------------------
157 : // nsISVGChildFrame methods
158 :
159 : void
160 0 : nsSVGAFrame::NotifySVGChanged(PRUint32 aFlags)
161 : {
162 0 : NS_ABORT_IF_FALSE(!(aFlags & DO_NOT_NOTIFY_RENDERING_OBSERVERS) ||
163 : (GetStateBits() & NS_STATE_SVG_NONDISPLAY_CHILD),
164 : "Must be NS_STATE_SVG_NONDISPLAY_CHILD!");
165 :
166 0 : NS_ABORT_IF_FALSE(aFlags & (TRANSFORM_CHANGED | COORD_CONTEXT_CHANGED),
167 : "Invalidation logic may need adjusting");
168 :
169 0 : if (aFlags & TRANSFORM_CHANGED) {
170 : // make sure our cached transform matrix gets (lazily) updated
171 0 : mCanvasTM = nsnull;
172 : }
173 :
174 0 : nsSVGAFrameBase::NotifySVGChanged(aFlags);
175 0 : }
176 :
177 : //----------------------------------------------------------------------
178 : // nsSVGContainerFrame methods:
179 :
180 : gfxMatrix
181 0 : nsSVGAFrame::GetCanvasTM()
182 : {
183 0 : if (!mCanvasTM) {
184 0 : NS_ASSERTION(mParent, "null parent");
185 :
186 0 : nsSVGContainerFrame *parent = static_cast<nsSVGContainerFrame*>(mParent);
187 0 : nsSVGAElement *content = static_cast<nsSVGAElement*>(mContent);
188 :
189 0 : gfxMatrix tm = content->PrependLocalTransformsTo(parent->GetCanvasTM());
190 :
191 0 : mCanvasTM = new gfxMatrix(tm);
192 : }
193 :
194 0 : return *mCanvasTM;
195 : }
196 :
197 : //----------------------------------------------------------------------
198 : // nsSVGTextContainerFrame methods:
199 :
200 : void
201 0 : nsSVGAFrame::GetXY(SVGUserUnitList *aX, SVGUserUnitList *aY)
202 : {
203 0 : aX->Clear();
204 0 : aY->Clear();
205 0 : }
206 :
207 : void
208 0 : nsSVGAFrame::GetDxDy(SVGUserUnitList *aDx, SVGUserUnitList *aDy)
209 : {
210 0 : aDx->Clear();
211 0 : aDy->Clear();
212 0 : }
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