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1 /* | 1 /* |
2 * Copyright (C) 2011 Leo Yang <leoyang@webkit.org> | 2 * Copyright (C) 2011 Leo Yang <leoyang@webkit.org> |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
18 */ | 18 */ |
19 | 19 |
20 #include "config.h" | 20 #include "config.h" |
21 | 21 |
22 #if ENABLE(SVG_FONTS) | 22 #if ENABLE(SVG_FONTS) |
23 #include "core/svg/SVGAltGlyphItemElement.h" | 23 #include "core/svg/SVGAltGlyphItemElement.h" |
24 | 24 |
| 25 #include "core/dom/ElementTraversal.h" |
25 #include "core/svg/SVGGlyphRefElement.h" | 26 #include "core/svg/SVGGlyphRefElement.h" |
26 | 27 |
27 namespace WebCore { | 28 namespace WebCore { |
28 | 29 |
29 inline SVGAltGlyphItemElement::SVGAltGlyphItemElement(Document& document) | 30 inline SVGAltGlyphItemElement::SVGAltGlyphItemElement(Document& document) |
30 : SVGElement(SVGNames::altGlyphItemTag, document) | 31 : SVGElement(SVGNames::altGlyphItemTag, document) |
31 { | 32 { |
32 ScriptWrappable::init(this); | 33 ScriptWrappable::init(this); |
33 } | 34 } |
34 | 35 |
35 PassRefPtr<SVGAltGlyphItemElement> SVGAltGlyphItemElement::create(Document& docu
ment) | 36 PassRefPtr<SVGAltGlyphItemElement> SVGAltGlyphItemElement::create(Document& docu
ment) |
36 { | 37 { |
37 return adoptRef(new SVGAltGlyphItemElement(document)); | 38 return adoptRef(new SVGAltGlyphItemElement(document)); |
38 } | 39 } |
39 | 40 |
40 bool SVGAltGlyphItemElement::hasValidGlyphElements(Vector<AtomicString>& glyphNa
mes) const | 41 bool SVGAltGlyphItemElement::hasValidGlyphElements(Vector<AtomicString>& glyphNa
mes) const |
41 { | 42 { |
42 // Spec: http://www.w3.org/TR/SVG/text.html#AltGlyphItemElement | 43 // Spec: http://www.w3.org/TR/SVG/text.html#AltGlyphItemElement |
43 // The ‘altGlyphItem’ element defines a candidate set of possible glyph subs
titutions. | 44 // The ‘altGlyphItem’ element defines a candidate set of possible glyph subs
titutions. |
44 // The first ‘altGlyphItem’ element whose referenced glyphs are all availabl
e is chosen. | 45 // The first ‘altGlyphItem’ element whose referenced glyphs are all availabl
e is chosen. |
45 // Its glyphs are rendered instead of the character(s) that are inside of th
e referencing | 46 // Its glyphs are rendered instead of the character(s) that are inside of th
e referencing |
46 // ‘altGlyph’ element. | 47 // ‘altGlyph’ element. |
47 // | 48 // |
48 // Here we fill glyphNames and return true only if all referenced glyphs are
valid and | 49 // Here we fill glyphNames and return true only if all referenced glyphs are
valid and |
49 // there is at least one glyph. | 50 // there is at least one glyph. |
50 for (Node* child = firstChild(); child; child = child->nextSibling()) { | 51 for (SVGGlyphRefElement* glyph = Traversal<SVGGlyphRefElement>::firstChild(*
this); glyph; glyph = Traversal<SVGGlyphRefElement>::nextSibling(*glyph)) { |
51 if (child->hasTagName(SVGNames::glyphRefTag)) { | 52 AtomicString referredGlyphName; |
52 AtomicString referredGlyphName; | 53 if (glyph->hasValidGlyphElement(referredGlyphName)) { |
53 if (toSVGGlyphRefElement(child)->hasValidGlyphElement(referredGlyphN
ame)) | 54 glyphNames.append(referredGlyphName); |
54 glyphNames.append(referredGlyphName); | 55 } else { |
55 else { | 56 glyphNames.clear(); |
56 glyphNames.clear(); | 57 return false; |
57 return false; | |
58 } | |
59 } | 58 } |
60 } | 59 } |
61 return !glyphNames.isEmpty(); | 60 return !glyphNames.isEmpty(); |
62 } | 61 } |
63 | 62 |
64 } | 63 } |
65 | 64 |
66 #endif | 65 #endif |
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