vcl/source/gdi/pdffontcache.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20
  21 #include "pdffontcache.hxx"
  22 #include <salgdi.hxx>
  23 #include <outfont.hxx>
  24 #include <sallayout.hxx>
  25
  26 using namespace vcl;
  27
  28 PDFFontCache::FontIdentifier::FontIdentifier( const PhysicalFontFace* pFont, bool bVertical ) :
  29     m_nFontId( pFont->GetFontId() ),
  30     m_nMagic( pFont->GetFontMagic() ),
  31     m_bVertical( bVertical )
  32 {
  33 }
  34
  35 PDFFontCache::FontData& PDFFontCache::getFont( const PhysicalFontFace* pFont, bool bVertical )
  36 {
  37     FontIdentifier aId( pFont, bVertical );
  38     FontToIndexMap::iterator it = m_aFontToIndex.find( aId );
  39     if( it != m_aFontToIndex.end() )
  40         return m_aFonts[ it->second ];
  41     m_aFontToIndex[ aId ] = sal_uInt32(m_aFonts.size());
  42     m_aFonts.push_back( FontData() );
  43     return m_aFonts.back();
  44 }
  45
  46 sal_Int32 PDFFontCache::getGlyphWidth( const PhysicalFontFace* pFont, sal_GlyphId nGlyph, bool bVertical, SalGraphics* pGraphics )
  47 {
  48     sal_Int32 nWidth = 0;
  49     FontData& rFontData( getFont( pFont, bVertical ) );
  50     if( rFontData.m_nWidths.empty() )
  51     {
  52         pGraphics->GetGlyphWidths( pFont, bVertical, rFontData.m_nWidths, rFontData.m_aGlyphIdToIndex );
  53     }
  54     if( ! rFontData.m_nWidths.empty() )
  55     {
  56         sal_GlyphId nIndex = nGlyph;
  57         if( (nGlyph & GF_ISCHAR) != 0 )
  58         {
  59             const sal_Ucs cCode = static_cast<sal_Ucs>(nGlyph & GF_IDXMASK);
  60             Ucs2UIntMap::const_iterator it = rFontData.m_aGlyphIdToIndex.find( cCode );
  61
  62             // allow symbol aliasing U+00xx -> U+F0xx if there is no direct match
  63             if( it == rFontData.m_aGlyphIdToIndex.end()
  64             &&  pFont->IsSymbolFont()
  65             &&  (cCode < 0x0100) )
  66                 it = rFontData.m_aGlyphIdToIndex.find( cCode+0xF000 );
  67
  68             nIndex = (it != rFontData.m_aGlyphIdToIndex.end()) ? it->second : 0;
  69         }
  70         nIndex &= GF_IDXMASK;
  71         if( nIndex < rFontData.m_nWidths.size() )
  72             nWidth = rFontData.m_nWidths[ nIndex ];
  73     }
  74     return nWidth;
  75 }
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */