khtml/svg/SVGFontElement.h

   1 /*
   2    Copyright (C) 2007 Eric Seidel <eric@webkit.org>
   3    Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
   4
   5    This library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public
   7    License as published by the Free Software Foundation; either
   8    version 2 of the License, or (at your option) any later version.
   9
  10    This library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public License
  16    along with this library; see the file COPYING.LIB.  If not, write to
  17    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18    Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef SVGFontElement_h
  22 #define SVGFontElement_h
  23
  24 #if ENABLE(SVG_FONTS)
  25 #include "SVGExternalResourcesRequired.h"
  26 #include "SVGGlyphElement.h"
  27 #include "SVGGlyphMap.h"
  28 #include "SVGHKernElement.h"
  29 #include "SVGStyledElement.h"
  30
  31 namespace WebCore {
  32
  33     class SVGMissingGlyphElement;
  34     class SVGFontElement : public SVGStyledElement
  35                          , public SVGExternalResourcesRequired {
  36     public:
  37         SVGFontElement(const QualifiedName&, Document*);
  38         virtual ~SVGFontElement();
  39
  40         virtual bool rendererIsNeeded(RenderStyle*) { return false; }
  41         virtual const SVGElement* contextElement() const { return this; }
  42
  43         void invalidateGlyphCache();
  44
  45         void getGlyphIdentifiersForString(const String&, Vector<SVGGlyphIdentifier>&) const;
  46
  47         bool getHorizontalKerningPairForStringsAndGlyphs(const String& u1, const String& g1, const String& u2, const String& g2, SVGHorizontalKerningPair& kerningPair) const;
  48
  49         SVGMissingGlyphElement* firstMissingGlyphElement() const;
  50
  51         // KHTML ElementImpl pure virtual method
  52         virtual quint32 id() const { return SVGNames::textTag.id(); }
  53         virtual DOMString tagName() const { return SVGNames::textTag.tagName(); }
  54
  55     private:
  56         void ensureGlyphCache() const;
  57
  58         typedef Vector<SVGHorizontalKerningPair> KerningPairVector;
  59
  60         mutable KerningPairVector m_kerningPairs;
  61         mutable SVGGlyphMap m_glyphMap;
  62         mutable bool m_isGlyphCacheValid;
  63     };
  64
  65 } // namespace WebCore
  66
  67 #endif // ENABLE(SVG_FONTS)
  68 #endif
  69
  70 // vim:ts=4:noet