2 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
22 #ifndef SVGFontElement_h
23 #define SVGFontElement_h
26 #include "SVGAnimatedPropertyMacros.h"
27 #include "SVGExternalResourcesRequired.h"
28 #include "SVGGlyphElement.h"
29 #include "SVGGlyphMap.h"
30 #include "SVGParserUtilities.h"
31 #include "SVGStyledElement.h"
35 // Describe an SVG <hkern>/<vkern> element
36 struct SVGKerningPair {
38 UnicodeRanges unicodeRange1;
39 UnicodeRanges unicodeRange2;
40 HashSet<String> unicodeName1;
41 HashSet<String> unicodeName2;
42 HashSet<String> glyphName1;
43 HashSet<String> glyphName2;
51 typedef Vector<SVGKerningPair> KerningPairVector;
53 class SVGMissingGlyphElement;
55 class SVGFontElement : public SVGStyledElement
56 , public SVGExternalResourcesRequired {
58 static PassRefPtr<SVGFontElement> create(const QualifiedName&, Document*);
60 void invalidateGlyphCache();
62 void getGlyphIdentifiersForString(const String&, Vector<SVGGlyphIdentifier>&) const;
64 float horizontalKerningForPairOfStringsAndGlyphs(const String& u1, const String& g1, const String& u2, const String& g2) const;
65 float verticalKerningForPairOfStringsAndGlyphs(const String& u1, const String& g1, const String& u2, const String& g2) const;
67 SVGMissingGlyphElement* firstMissingGlyphElement() const;
70 SVGFontElement(const QualifiedName&, Document*);
72 virtual void synchronizeProperty(const QualifiedName&);
73 virtual bool rendererIsNeeded(RenderStyle*) { return false; }
75 void ensureGlyphCache() const;
77 // SVGExternalResourcesRequired
78 DECLARE_ANIMATED_STATIC_PROPERTY_NEW(SVGFontElement, SVGNames::externalResourcesRequiredAttr, bool, ExternalResourcesRequired, externalResourcesRequired)
80 mutable KerningPairVector m_horizontalKerningPairs;
81 mutable KerningPairVector m_verticalKerningPairs;
82 mutable SVGGlyphMap m_glyphMap;
83 mutable bool m_isGlyphCacheValid;
86 } // namespace WebCore
88 #endif // ENABLE(SVG_FONTS)