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) 2002
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 "nsIDOMSVGTSpanElement.h"
40 : #include "nsIDOMSVGAltGlyphElement.h"
41 : #include "nsSVGTSpanFrame.h"
42 : #include "nsSVGUtils.h"
43 : #include "nsSVGTextFrame.h"
44 : #include "nsSVGOuterSVGFrame.h"
45 :
46 : //----------------------------------------------------------------------
47 : // Implementation
48 :
49 : nsIFrame*
50 0 : NS_NewSVGTSpanFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
51 : {
52 0 : return new (aPresShell) nsSVGTSpanFrame(aContext);
53 : }
54 :
55 0 : NS_IMPL_FRAMEARENA_HELPERS(nsSVGTSpanFrame)
56 :
57 : nsIAtom *
58 0 : nsSVGTSpanFrame::GetType() const
59 : {
60 0 : return nsGkAtoms::svgTSpanFrame;
61 : }
62 :
63 : //----------------------------------------------------------------------
64 : // nsQueryFrame methods
65 :
66 0 : NS_QUERYFRAME_HEAD(nsSVGTSpanFrame)
67 0 : NS_QUERYFRAME_ENTRY(nsISVGGlyphFragmentNode)
68 0 : NS_QUERYFRAME_TAIL_INHERITING(nsSVGTSpanFrameBase)
69 :
70 : //----------------------------------------------------------------------
71 : // nsIFrame methods
72 :
73 : #ifdef DEBUG
74 : NS_IMETHODIMP
75 0 : nsSVGTSpanFrame::Init(nsIContent* aContent,
76 : nsIFrame* aParent,
77 : nsIFrame* aPrevInFlow)
78 : {
79 0 : NS_ASSERTION(aParent, "null parent");
80 :
81 : // Some of our subclasses have an aContent that's not a <svg:tspan> or are
82 : // allowed to be constructed even when there is no nsISVGTextContentMetrics
83 : // ancestor. For example, nsSVGAFrame inherits from us but may have nothing
84 : // to do with text.
85 0 : if (GetType() == nsGkAtoms::svgTSpanFrame) {
86 0 : nsIFrame* ancestorFrame = nsSVGUtils::GetFirstNonAAncestorFrame(aParent);
87 0 : NS_ASSERTION(ancestorFrame, "Must have ancestor");
88 :
89 0 : nsSVGTextContainerFrame *metrics = do_QueryFrame(ancestorFrame);
90 0 : NS_ASSERTION(metrics,
91 : "trying to construct an SVGTSpanFrame for an invalid "
92 : "container");
93 :
94 0 : nsCOMPtr<nsIDOMSVGTSpanElement> tspan = do_QueryInterface(aContent);
95 0 : nsCOMPtr<nsIDOMSVGAltGlyphElement> altGlyph = do_QueryInterface(aContent);
96 0 : NS_ASSERTION(tspan || altGlyph, "Content is not an SVG tspan or altGlyph");
97 : }
98 :
99 0 : return nsSVGTSpanFrameBase::Init(aContent, aParent, aPrevInFlow);
100 : }
101 : #endif /* DEBUG */
102 :
103 : NS_IMETHODIMP
104 0 : nsSVGTSpanFrame::AttributeChanged(PRInt32 aNameSpaceID,
105 : nsIAtom* aAttribute,
106 : PRInt32 aModType)
107 : {
108 0 : if (aNameSpaceID == kNameSpaceID_None &&
109 : (aAttribute == nsGkAtoms::x ||
110 : aAttribute == nsGkAtoms::y ||
111 : aAttribute == nsGkAtoms::dx ||
112 : aAttribute == nsGkAtoms::dy ||
113 : aAttribute == nsGkAtoms::rotate)) {
114 0 : NotifyGlyphMetricsChange();
115 : }
116 :
117 0 : return NS_OK;
118 : }
119 :
120 : //----------------------------------------------------------------------
121 : // nsSVGContainerFrame methods:
122 :
123 : gfxMatrix
124 0 : nsSVGTSpanFrame::GetCanvasTM()
125 : {
126 0 : NS_ASSERTION(mParent, "null parent");
127 0 : return static_cast<nsSVGContainerFrame*>(mParent)->GetCanvasTM();
128 : }
129 :
130 : //----------------------------------------------------------------------
131 : // nsISVGGlyphFragmentNode methods:
132 :
133 : PRUint32
134 0 : nsSVGTSpanFrame::GetNumberOfChars()
135 : {
136 0 : return nsSVGTSpanFrameBase::GetNumberOfChars();
137 : }
138 :
139 : float
140 0 : nsSVGTSpanFrame::GetComputedTextLength()
141 : {
142 0 : return nsSVGTSpanFrameBase::GetComputedTextLength();
143 : }
144 :
145 : float
146 0 : nsSVGTSpanFrame::GetSubStringLength(PRUint32 charnum, PRUint32 nchars)
147 : {
148 0 : return nsSVGTSpanFrameBase::GetSubStringLength(charnum, nchars);
149 : }
150 :
151 : PRInt32
152 0 : nsSVGTSpanFrame::GetCharNumAtPosition(nsIDOMSVGPoint *point)
153 : {
154 0 : return nsSVGTSpanFrameBase::GetCharNumAtPosition(point);
155 : }
156 :
157 : NS_IMETHODIMP_(nsSVGGlyphFrame *)
158 0 : nsSVGTSpanFrame::GetFirstGlyphFrame()
159 : {
160 : // try children first:
161 0 : nsIFrame* kid = mFrames.FirstChild();
162 0 : while (kid) {
163 0 : nsISVGGlyphFragmentNode *node = do_QueryFrame(kid);
164 0 : if (node)
165 0 : return node->GetFirstGlyphFrame();
166 0 : kid = kid->GetNextSibling();
167 : }
168 :
169 : // nope. try siblings:
170 0 : return GetNextGlyphFrame();
171 :
172 : }
173 :
174 : NS_IMETHODIMP_(nsSVGGlyphFrame *)
175 0 : nsSVGTSpanFrame::GetNextGlyphFrame()
176 : {
177 0 : nsIFrame* sibling = GetNextSibling();
178 0 : while (sibling) {
179 0 : nsISVGGlyphFragmentNode *node = do_QueryFrame(sibling);
180 0 : if (node)
181 0 : return node->GetFirstGlyphFrame();
182 0 : sibling = sibling->GetNextSibling();
183 : }
184 :
185 : // no more siblings. go back up the tree.
186 :
187 0 : NS_ASSERTION(GetParent(), "null parent");
188 0 : nsISVGGlyphFragmentNode *node = do_QueryFrame(GetParent());
189 0 : return node ? node->GetNextGlyphFrame() : nsnull;
190 : }
191 :
192 : NS_IMETHODIMP_(void)
193 0 : nsSVGTSpanFrame::SetWhitespaceCompression(bool)
194 : {
195 0 : nsSVGTSpanFrameBase::SetWhitespaceCompression();
196 0 : }
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