LCOV - code coverage report
Current view: directory - gfx/graphite2/src - GlyphFaceCache.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 65 0 0.0 %
Date: 2012-06-02 Functions: 6 0 0.0 %

       1                 : /*  GRAPHITE2 LICENSING
       2                 : 
       3                 :     Copyright 2010, SIL International
       4                 :     All rights reserved.
       5                 : 
       6                 :     This library is free software; you can redistribute it and/or modify
       7                 :     it under the terms of the GNU Lesser General Public License as published
       8                 :     by the Free Software Foundation; either version 2.1 of License, or
       9                 :     (at your option) any later version.
      10                 : 
      11                 :     This program 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                 :     Lesser General Public License for more details.
      15                 : 
      16                 :     You should also have received a copy of the GNU Lesser General Public
      17                 :     License along with this library in the file named "LICENSE".
      18                 :     If not, write to the Free Software Foundation, 51 Franklin Street, 
      19                 :     Suite 500, Boston, MA 02110-1335, USA or visit their web page on the 
      20                 :     internet at http://www.fsf.org/licenses/lgpl.html.
      21                 : 
      22                 : Alternatively, the contents of this file may be used under the terms of the
      23                 : Mozilla Public License (http://mozilla.org/MPL) or the GNU General Public
      24                 : License, as published by the Free Software Foundation, either version 2
      25                 : of the License or (at your option) any later version.
      26                 : */
      27                 : #include "inc/GlyphFaceCache.h"
      28                 : #include "graphite2/Font.h"
      29                 : #include "inc/Face.h"     //for the tags
      30                 : #include "inc/Endian.h"
      31                 : 
      32                 : using namespace graphite2;
      33                 : 
      34               0 : /*virtual*/ bool GlyphFaceCacheHeader::initialize(const Face & face, const bool dumb_font)    //return result indicates success. Do not use if failed.
      35                 : {
      36               0 :     if ((m_pLoca = face.getTable(Tag::loca, &m_lLoca)) == NULL) return false;
      37               0 :     if ((m_pHead = face.getTable(Tag::head)) == NULL) return false;
      38               0 :     if ((m_pGlyf = face.getTable(Tag::glyf, &m_lGlyf)) == NULL) return false;
      39               0 :     if ((m_pHmtx = face.getTable(Tag::hmtx, &m_lHmtx)) == NULL) return false;
      40               0 :     if ((m_pHHea = face.getTable(Tag::hhea)) == NULL) return false;
      41                 : 
      42               0 :     const void* pMaxp = face.getTable(Tag::maxp);
      43               0 :     if (pMaxp == NULL) return false;
      44               0 :     m_nGlyphs = m_nGlyphsWithGraphics = (unsigned short)TtfUtil::GlyphCount(pMaxp);
      45                 :     
      46               0 :     if (!dumb_font)
      47                 :     {
      48               0 :                 if ((m_pGlat = face.getTable(Tag::Glat, &m_lGlat)) == NULL) return false;
      49               0 :                 m_fGlat = be::peek<uint32>(m_pGlat);
      50                 :                 size_t lGloc;
      51               0 :                 if ((m_pGloc = face.getTable(Tag::Gloc, &lGloc)) == NULL) return false;
      52               0 :                 if (lGloc < 6) return false;
      53               0 :                 int version = be::read<uint32>(m_pGloc);
      54               0 :                 if (version != 0x00010000) return false;
      55                 : 
      56               0 :                 const uint16 locFlags = be::read<uint16>(m_pGloc);
      57               0 :                 m_numAttrs = be::read<uint16>(m_pGloc);
      58               0 :                 if (m_numAttrs > 0x1000) return false;                  // is this hard limit appropriate?
      59                 : 
      60               0 :                 if (locFlags & 1)
      61                 :                 {
      62               0 :                         m_locFlagsUse32Bit = true;
      63               0 :                         m_nGlyphsWithAttributes = (unsigned short)((lGloc - 12) / 4);
      64                 :                 }
      65                 :                 else
      66                 :                 {
      67               0 :                         m_locFlagsUse32Bit = false;
      68               0 :                         m_nGlyphsWithAttributes = (unsigned short)((lGloc - 10) / 2);
      69                 :                 }
      70                 : 
      71               0 :                 if (m_nGlyphsWithAttributes > m_nGlyphs)
      72               0 :                 m_nGlyphs = m_nGlyphsWithAttributes;
      73                 :     }
      74                 : 
      75               0 :     return true;
      76                 : }
      77                 : 
      78               0 : GlyphFaceCache* GlyphFaceCache::makeCache(const GlyphFaceCacheHeader& hdr)
      79                 : {
      80               0 :     return new (hdr) GlyphFaceCache(hdr);
      81                 : }
      82                 : 
      83               0 : GlyphFaceCache::GlyphFaceCache(const GlyphFaceCacheHeader& hdr)
      84               0 : :   GlyphFaceCacheHeader(hdr)
      85                 : {
      86               0 :     unsigned int nGlyphs = numGlyphs();
      87                 :     
      88               0 :     for (unsigned int i = 0; i < nGlyphs; i++)
      89                 :     {
      90               0 :          *glyphPtrDirect(i) = NULL;
      91                 :     }
      92               0 : }
      93                 : 
      94               0 : GlyphFaceCache::~GlyphFaceCache()
      95                 : {
      96               0 :     unsigned int nGlyphs = numGlyphs();
      97               0 :     int deltaPointers = (*glyphPtrDirect(nGlyphs-1u) - *glyphPtrDirect(0u));
      98               0 :     if ((nGlyphs > 0u) && (deltaPointers == static_cast<int>(nGlyphs - 1)))
      99                 :     {
     100               0 :         for (unsigned int i=0 ; i<nGlyphs; ++i)
     101                 :         {
     102               0 :             GlyphFace *p = *glyphPtrDirect(i);
     103               0 :             assert (p);
     104               0 :             p->~GlyphFace();
     105                 :         }
     106               0 :         free (*glyphPtrDirect(0));
     107                 :     }
     108                 :     else
     109                 :     {
     110               0 :         for (unsigned int i=0 ; i<nGlyphs; ++i)
     111                 :         {
     112               0 :             GlyphFace *p = *glyphPtrDirect(i);
     113               0 :             if (p)
     114                 :             {
     115               0 :                 p->~GlyphFace();
     116               0 :                 free(p);
     117                 :             }
     118                 :         }
     119                 :     }
     120               0 : }
     121                 : 
     122               0 : void GlyphFaceCache::loadAllGlyphs()
     123                 : {
     124               0 :     unsigned int nGlyphs = numGlyphs();
     125                 : //    size_t sparse_size = 0;
     126               0 :     GlyphFace * glyphs = gralloc<GlyphFace>(nGlyphs);
     127               0 :     for (unsigned short glyphid = 0; glyphid < nGlyphs; glyphid++)
     128                 :     {
     129               0 :         GlyphFace **p = glyphPtrDirect(glyphid);
     130               0 :         *p = &(glyphs[glyphid]);
     131               0 :         new(*p) GlyphFace(*this, glyphid);
     132                 : //        sparse_size += (*p)->m_attrs._sizeof();
     133                 :     }
     134                 : //    const size_t flat_size = nGlyphs*(sizeof(uint16*) + sizeof(uint16)*numAttrs());
     135                 : //    assert(sparse_size <= flat_size);
     136               0 : }
     137                 : 
     138               0 : /*virtual*/ const GlyphFace *GlyphFaceCache::glyph(unsigned short glyphid) const      //result may be changed by subsequent call with a different glyphid
     139                 : { 
     140               0 :     GlyphFace **p = glyphPtrDirect(glyphid);
     141               0 :     if (*p)
     142               0 :         return *p;
     143                 : 
     144               0 :     *p = (GlyphFace*)malloc(sizeof(GlyphFace));
     145               0 :     new(*p) GlyphFace(*this, glyphid);
     146               0 :     return *p;
     147                 : }

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