Home | History | Annotate | Download | only in svg 
      1 /*
      2    Copyright (C) 2007 Eric Seidel <eric (at) webkit.org>
      3    Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) 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 void synchronizeProperty(const QualifiedName&);
     41         virtual bool rendererIsNeeded(RenderStyle*) { return false; }
     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     private:
     52         // SVGExternalResourcesRequired
     53         DECLARE_ANIMATED_PROPERTY(SVGFontElement, SVGNames::externalResourcesRequiredAttr, bool, ExternalResourcesRequired, externalResourcesRequired)
     54 
     55         void ensureGlyphCache() const;
     56 
     57         typedef Vector<SVGHorizontalKerningPair> KerningPairVector;
     58 
     59         mutable KerningPairVector m_kerningPairs;
     60         mutable SVGGlyphMap m_glyphMap;
     61         mutable bool m_isGlyphCacheValid;
     62     };
     63 
     64 } // namespace WebCore
     65 
     66 #endif // ENABLE(SVG_FONTS)
     67 #endif
     68