LCOV - code coverage report
Current view: top level - libreoffice/vcl/generic/glyphs - glyphcache.cxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 129 201 64.2 %
Date: 2012-12-17 Functions: 20 25 80.0 %
Legend: Lines: hit not hit

          Line data    Source code
       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 <stdio.h>
      22             : #include <stdlib.h>
      23             : #include <math.h>
      24             : #include <gcach_ftyp.hxx>
      25             : 
      26             : #include <vcl/svapp.hxx>
      27             : #include <vcl/bitmap.hxx>
      28             : #include <outfont.hxx>
      29             : 
      30             : #ifdef ENABLE_GRAPHITE
      31             : #include <graphite_features.hxx>
      32             : #endif
      33             : 
      34             : #include <rtl/ustring.hxx>      // used only for string=>hashvalue
      35             : #include <osl/file.hxx>
      36             : #include <tools/debug.hxx>
      37             : 
      38             : // =======================================================================
      39             : // GlyphCache
      40             : // =======================================================================
      41             : 
      42             : static GlyphCache* pInstance = NULL;
      43             : 
      44          74 : GlyphCache::GlyphCache( GlyphCachePeer& rPeer )
      45             : :   mrPeer( rPeer ),
      46             :     mnMaxSize( 1500000 ),
      47             :     mnBytesUsed(sizeof(GlyphCache)),
      48             :     mnLruIndex(0),
      49             :     mnGlyphCount(0),
      50             :     mpCurrentGCFont(NULL),
      51          74 :     mpFtManager(NULL)
      52             : {
      53          74 :     pInstance = this;
      54          74 :     mpFtManager = new FreetypeManager;
      55          74 : }
      56             : 
      57             : // -----------------------------------------------------------------------
      58             : 
      59         148 : GlyphCache::~GlyphCache()
      60             : {
      61          74 :     InvalidateAllGlyphs();
      62          74 :     delete mpFtManager;
      63          74 : }
      64             : 
      65             : // -----------------------------------------------------------------------
      66             : 
      67          74 : void GlyphCache::InvalidateAllGlyphs()
      68             : {
      69        2323 :     for( FontList::iterator it = maFontList.begin(), end = maFontList.end(); it != end; ++it )
      70             :     {
      71        2249 :         ServerFont* pServerFont = it->second;
      72        2249 :         mrPeer.RemovingFont(*pServerFont);
      73        2249 :         delete pServerFont;
      74             :     }
      75             : 
      76          74 :     maFontList.clear();
      77          74 :     mpCurrentGCFont = NULL;
      78          74 : }
      79             : 
      80             : // -----------------------------------------------------------------------
      81             : 
      82             : inline
      83       44159 : size_t GlyphCache::IFSD_Hash::operator()( const FontSelectPattern& rFontSelData ) const
      84             : {
      85             :     // TODO: is it worth to improve this hash function?
      86       44159 :     sal_IntPtr nFontId = reinterpret_cast<sal_IntPtr>( rFontSelData.mpFontData );
      87             : #ifdef ENABLE_GRAPHITE
      88       44159 :     if (rFontSelData.maTargetName.Search(grutils::GrFeatureParser::FEAT_PREFIX)
      89             :         != STRING_NOTFOUND)
      90             :     {
      91           0 :         rtl::OString aFeatName = rtl::OUStringToOString( rFontSelData.maTargetName, RTL_TEXTENCODING_UTF8 );
      92           0 :         nFontId ^= aFeatName.hashCode();
      93             :     }
      94             : #endif
      95       44159 :     size_t nHash = nFontId << 8;
      96       44159 :     nHash   += rFontSelData.mnHeight;
      97       44159 :     nHash   += rFontSelData.mnOrientation;
      98       44159 :     nHash   += rFontSelData.mbVertical;
      99       44159 :     nHash   += rFontSelData.meItalic;
     100       44159 :     nHash   += rFontSelData.meWeight;
     101             : #ifdef ENABLE_GRAPHITE
     102       44159 :     nHash   += rFontSelData.meLanguage;
     103             : #endif
     104       44159 :     return nHash;
     105             : }
     106             : 
     107             : // -----------------------------------------------------------------------
     108             : 
     109       52967 : bool GlyphCache::IFSD_Equal::operator()( const FontSelectPattern& rA, const FontSelectPattern& rB) const
     110             : {
     111             :     // check font ids
     112       52967 :     sal_IntPtr nFontIdA = reinterpret_cast<sal_IntPtr>( rA.mpFontData );
     113       52967 :     sal_IntPtr nFontIdB = reinterpret_cast<sal_IntPtr>( rB.mpFontData );
     114       52967 :     if( nFontIdA != nFontIdB )
     115          14 :         return false;
     116             : 
     117             :     // compare with the requested metrics
     118       52953 :     if( (rA.mnHeight         != rB.mnHeight)
     119             :     ||  (rA.mnOrientation    != rB.mnOrientation)
     120             :     ||  (rA.mbVertical       != rB.mbVertical)
     121             :     ||  (rA.mbNonAntialiased != rB.mbNonAntialiased) )
     122        8404 :         return false;
     123             : 
     124       44549 :     if( (rA.meItalic != rB.meItalic)
     125             :     ||  (rA.meWeight != rB.meWeight) )
     126           0 :         return false;
     127             : 
     128             :     // NOTE: ignoring meFamily deliberately
     129             : 
     130             :     // compare with the requested width, allow default width
     131       44549 :     int nAWidth = rA.mnWidth != 0 ? rA.mnWidth : rA.mnHeight;
     132       44549 :     int nBWidth = rB.mnWidth != 0 ? rB.mnWidth : rB.mnHeight;
     133       44549 :     if( nAWidth != nBWidth )
     134        4816 :         return false;
     135             : 
     136             : #ifdef ENABLE_GRAPHITE
     137       39733 :    if (rA.meLanguage != rB.meLanguage)
     138           0 :         return false;
     139             :    // check for features
     140       79466 :    if ((rA.maTargetName.Search(grutils::GrFeatureParser::FEAT_PREFIX)
     141             :         != STRING_NOTFOUND ||
     142       39733 :         rB.maTargetName.Search(grutils::GrFeatureParser::FEAT_PREFIX)
     143           0 :         != STRING_NOTFOUND) && rA.maTargetName != rB.maTargetName)
     144           0 :         return false;
     145             : #endif
     146             : 
     147       39733 :     if (rA.mbEmbolden != rB.mbEmbolden)
     148           0 :         return false;
     149             : 
     150       39733 :     if (rA.maItalicMatrix != rB.maItalicMatrix)
     151           0 :         return false;
     152             : 
     153       39733 :     return true;
     154             : }
     155             : 
     156             : // -----------------------------------------------------------------------
     157             : 
     158     1525490 : GlyphCache& GlyphCache::GetInstance()
     159             : {
     160     1525490 :     return *pInstance;
     161             : }
     162             : 
     163             : // -----------------------------------------------------------------------
     164             : 
     165        9672 : void GlyphCache::AddFontFile( const rtl::OString& rNormalizedName, int nFaceNum,
     166             :     sal_IntPtr nFontId, const ImplDevFontAttributes& rDFA, const ExtraKernInfo* pExtraKern )
     167             : {
     168        9672 :     if( mpFtManager )
     169        9672 :         mpFtManager->AddFontFile( rNormalizedName, nFaceNum, nFontId, rDFA, pExtraKern );
     170        9672 : }
     171             : 
     172             : // -----------------------------------------------------------------------
     173             : 
     174          80 : void GlyphCache::AnnounceFonts( ImplDevFontList* pList ) const
     175             : {
     176          80 :     if( mpFtManager )
     177          80 :         mpFtManager->AnnounceFonts( pList );
     178          80 : }
     179             : 
     180           0 : void GlyphCache::ClearFontCache()
     181             : {
     182           0 :     InvalidateAllGlyphs();
     183           0 :     if (mpFtManager)
     184           0 :         mpFtManager->ClearFontList();
     185           0 : }
     186             : 
     187             : // -----------------------------------------------------------------------
     188             : 
     189       41982 : ServerFont* GlyphCache::CacheFont( const FontSelectPattern& rFontSelData )
     190             : {
     191             :     // a serverfont request has pFontData
     192       41982 :     if( rFontSelData.mpFontData == NULL )
     193           0 :         return NULL;
     194             :     // a serverfont request has a fontid > 0
     195       41982 :     sal_IntPtr nFontId = rFontSelData.mpFontData->GetFontId();
     196       41982 :     if( nFontId <= 0 )
     197           0 :         return NULL;
     198             : 
     199             :     // the FontList's key mpFontData member is reinterpreted as font id
     200       41982 :     FontSelectPattern aFontSelData = rFontSelData;
     201       41982 :     aFontSelData.mpFontData = reinterpret_cast<PhysicalFontFace*>( nFontId );
     202       41982 :     FontList::iterator it = maFontList.find( aFontSelData );
     203       41982 :     if( it != maFontList.end() )
     204             :     {
     205       39733 :         ServerFont* pFound = it->second;
     206       39733 :         if( pFound )
     207       39733 :             pFound->AddRef();
     208       39733 :         return pFound;
     209             :     }
     210             : 
     211             :     // font not cached yet => create new font item
     212        2249 :     ServerFont* pNew = NULL;
     213        2249 :     if( mpFtManager )
     214        2249 :         pNew = mpFtManager->CreateFont( aFontSelData );
     215             : 
     216        2249 :     if( pNew )
     217             :     {
     218        2249 :         maFontList[ aFontSelData ] = pNew;
     219        2249 :         mnBytesUsed += pNew->GetByteCount();
     220             : 
     221             :         // enable garbage collection for new font
     222        2249 :         if( !mpCurrentGCFont )
     223             :         {
     224          72 :             mpCurrentGCFont = pNew;
     225          72 :             pNew->mpNextGCFont = pNew;
     226          72 :             pNew->mpPrevGCFont = pNew;
     227             :         }
     228             :         else
     229             :         {
     230        2177 :             pNew->mpNextGCFont = mpCurrentGCFont;
     231        2177 :             pNew->mpPrevGCFont = mpCurrentGCFont->mpPrevGCFont;
     232        2177 :             pNew->mpPrevGCFont->mpNextGCFont = pNew;
     233        2177 :             mpCurrentGCFont->mpPrevGCFont = pNew;
     234             :         }
     235             :     }
     236             : 
     237        2249 :     return pNew;
     238             : }
     239             : 
     240             : // -----------------------------------------------------------------------
     241             : 
     242       39298 : void GlyphCache::UncacheFont( ServerFont& rServerFont )
     243             : {
     244             :     // the interface for rServerFont must be const because a
     245             :     // user who wants to release it only got const ServerFonts.
     246             :     // The caching algorithm needs a non-const object
     247       39298 :     ServerFont* pFont = const_cast<ServerFont*>( &rServerFont );
     248       70931 :     if( (pFont->Release() <= 0)
     249       31633 :     &&  (mnMaxSize <= (mnBytesUsed + mrPeer.GetByteCount())) )
     250             :     {
     251           0 :         mpCurrentGCFont = pFont;
     252           0 :         GarbageCollect();
     253             :     }
     254       39298 : }
     255             : 
     256             : // -----------------------------------------------------------------------
     257             : 
     258           0 : void GlyphCache::GarbageCollect()
     259             : {
     260             :     // when current GC font has been destroyed get another one
     261           0 :     if( !mpCurrentGCFont )
     262             :     {
     263           0 :         FontList::iterator it = maFontList.begin();
     264           0 :         if( it != maFontList.end() )
     265           0 :             mpCurrentGCFont = it->second;
     266             :     }
     267             : 
     268             :     // unless there is no other font to collect
     269           0 :     if( !mpCurrentGCFont )
     270           0 :         return;
     271             : 
     272             :     // prepare advance to next font for garbage collection
     273           0 :     ServerFont* const pServerFont = mpCurrentGCFont;
     274           0 :     mpCurrentGCFont = pServerFont->mpNextGCFont;
     275             : 
     276           0 :     if( (pServerFont == mpCurrentGCFont)    // no other fonts
     277           0 :     ||  (pServerFont->GetRefCount() > 0) )  // font still used
     278             :     {
     279             :         // try to garbage collect at least a few bytes
     280           0 :         pServerFont->GarbageCollect( mnLruIndex - mnGlyphCount/2 );
     281             :     }
     282             :     else // current GC font is unreferenced
     283             :     {
     284             :         DBG_ASSERT( (pServerFont->GetRefCount() == 0),
     285             :             "GlyphCache::GC detected RefCount underflow" );
     286             : 
     287             :         // free all pServerFont related data
     288           0 :         pServerFont->GarbageCollect( mnLruIndex+0x10000000 );
     289           0 :         if( pServerFont == mpCurrentGCFont )
     290           0 :             mpCurrentGCFont = NULL;
     291           0 :         const FontSelectPattern& rIFSD = pServerFont->GetFontSelData();
     292           0 :         maFontList.erase( rIFSD );
     293           0 :         mrPeer.RemovingFont( *pServerFont );
     294           0 :         mnBytesUsed -= pServerFont->GetByteCount();
     295             : 
     296             :         // remove font from list of garbage collected fonts
     297           0 :         if( pServerFont->mpPrevGCFont )
     298           0 :             pServerFont->mpPrevGCFont->mpNextGCFont = pServerFont->mpNextGCFont;
     299           0 :         if( pServerFont->mpNextGCFont )
     300           0 :             pServerFont->mpNextGCFont->mpPrevGCFont = pServerFont->mpPrevGCFont;
     301           0 :         if( pServerFont == mpCurrentGCFont )
     302           0 :             mpCurrentGCFont = NULL;
     303             : 
     304           0 :         delete pServerFont;
     305             :     }
     306             : }
     307             : 
     308             : // -----------------------------------------------------------------------
     309             : 
     310     1525490 : inline void GlyphCache::UsingGlyph( ServerFont&, GlyphData& rGlyphData )
     311             : {
     312     1525490 :     rGlyphData.SetLruValue( mnLruIndex++ );
     313     1525490 : }
     314             : 
     315             : // -----------------------------------------------------------------------
     316             : 
     317       17880 : inline void GlyphCache::AddedGlyph( ServerFont& rServerFont, GlyphData& rGlyphData )
     318             : {
     319       17880 :     ++mnGlyphCount;
     320       17880 :     mnBytesUsed += sizeof( rGlyphData );
     321       17880 :     UsingGlyph( rServerFont, rGlyphData );
     322       17880 :     GrowNotify();
     323       17880 : }
     324             : 
     325             : // -----------------------------------------------------------------------
     326             : 
     327       17880 : void GlyphCache::GrowNotify()
     328             : {
     329       17880 :     if( (mnBytesUsed + mrPeer.GetByteCount()) > mnMaxSize )
     330           0 :         GarbageCollect();
     331       17880 : }
     332             : 
     333             : // -----------------------------------------------------------------------
     334             : 
     335           0 : inline void GlyphCache::RemovingGlyph( ServerFont& rSF, GlyphData& rGD, int nGlyphIndex )
     336             : {
     337           0 :     mrPeer.RemovingGlyph( rSF, rGD, nGlyphIndex );
     338           0 :     mnBytesUsed -= sizeof( GlyphData );
     339           0 :     --mnGlyphCount;
     340           0 : }
     341             : 
     342             : // -----------------------------------------------------------------------
     343             : 
     344        2249 : void ServerFont::ReleaseFromGarbageCollect()
     345             : {
     346             :    // remove from GC list
     347        2249 :     ServerFont* pPrev = mpPrevGCFont;
     348        2249 :     ServerFont* pNext = mpNextGCFont;
     349        2249 :     if( pPrev ) pPrev->mpNextGCFont = pNext;
     350        2249 :     if( pNext ) pNext->mpPrevGCFont = pPrev;
     351        2249 :     mpPrevGCFont = NULL;
     352        2249 :     mpNextGCFont = NULL;
     353        2249 : }
     354             : 
     355             : // -----------------------------------------------------------------------
     356             : 
     357       39298 : long ServerFont::Release() const
     358             : {
     359             :     DBG_ASSERT( mnRefCount > 0, "ServerFont: RefCount underflow" );
     360       39298 :     return --mnRefCount;
     361             : }
     362             : 
     363             : // -----------------------------------------------------------------------
     364             : 
     365     1525490 : GlyphData& ServerFont::GetGlyphData( int nGlyphIndex )
     366             : {
     367             :     // usually the GlyphData is cached
     368     1525490 :     GlyphList::iterator it = maGlyphList.find( nGlyphIndex );
     369     1525490 :     if( it != maGlyphList.end() ) {
     370     1507610 :         GlyphData& rGlyphData = it->second;
     371     1507610 :         GlyphCache::GetInstance().UsingGlyph( *this, rGlyphData );
     372     1507610 :         return rGlyphData;
     373             :     }
     374             : 
     375             :     // sometimes not => we need to create and initialize it ourselves
     376       17880 :     GlyphData& rGlyphData = maGlyphList[ nGlyphIndex ];
     377       17880 :     mnBytesUsed += sizeof( GlyphData );
     378       17880 :     InitGlyphData( nGlyphIndex, rGlyphData );
     379       17880 :     GlyphCache::GetInstance().AddedGlyph( *this, rGlyphData );
     380       17880 :     return rGlyphData;
     381             : }
     382             : 
     383             : // -----------------------------------------------------------------------
     384             : 
     385           0 : void ServerFont::GarbageCollect( long nMinLruIndex )
     386             : {
     387           0 :     GlyphList::iterator it_next = maGlyphList.begin();
     388           0 :     while( it_next != maGlyphList.end() )
     389             :     {
     390           0 :         GlyphList::iterator it = it_next++;
     391           0 :         GlyphData& rGD = it->second;
     392           0 :         if( (nMinLruIndex - rGD.GetLruValue()) > 0 )
     393             :         {
     394             :             OSL_ASSERT( mnBytesUsed >= sizeof(GlyphData) );
     395           0 :             mnBytesUsed -= sizeof( GlyphData );
     396           0 :             GlyphCache::GetInstance().RemovingGlyph( *this, rGD, it->first );
     397           0 :             maGlyphList.erase( it );
     398           0 :             it_next = maGlyphList.begin();
     399             :         }
     400             :     }
     401           0 : }
     402             : 
     403             : // =======================================================================
     404             : 
     405        4269 : ImplServerFontEntry::ImplServerFontEntry( FontSelectPattern& rFSD )
     406             : :   ImplFontEntry( rFSD )
     407             : ,   mpServerFont( NULL )
     408        4269 : ,   mbGotFontOptions( false )
     409        4269 : {}
     410             : 
     411             : // -----------------------------------------------------------------------
     412             : 
     413        3162 : ImplServerFontEntry::~ImplServerFontEntry()
     414             : {
     415             :     // TODO: remove the ServerFont here instead of in the GlyphCache
     416        3162 : }
     417             : 
     418             : // =======================================================================
     419             : 
     420        2800 : ExtraKernInfo::ExtraKernInfo( sal_IntPtr nFontId )
     421             : :   mbInitialized( false ),
     422             :     mnFontId( nFontId ),
     423        2800 :     maUnicodeKernPairs( 0 )
     424        2800 : {}
     425             : 
     426             : //--------------------------------------------------------------------------
     427             : 
     428           0 : int ExtraKernInfo::GetUnscaledKernPairs( ImplKernPairData** ppKernPairs ) const
     429             : {
     430           0 :     if( !mbInitialized )
     431           0 :         Initialize();
     432             : 
     433             :     // return early if no kerning available
     434           0 :     if( maUnicodeKernPairs.empty() )
     435           0 :         return 0;
     436             : 
     437             :     // allocate kern pair table
     438           0 :     int nKernCount = maUnicodeKernPairs.size();
     439           0 :     *ppKernPairs = new ImplKernPairData[ nKernCount ];
     440             : 
     441             :     // fill in unicode kern pairs with the kern value scaled to the font width
     442           0 :     ImplKernPairData* pKernData = *ppKernPairs;
     443           0 :     UnicodeKernPairs::const_iterator it = maUnicodeKernPairs.begin();
     444           0 :     for(; it != maUnicodeKernPairs.end(); ++it )
     445           0 :         *(pKernData++) = *it;
     446             : 
     447           0 :     return nKernCount;
     448             : }
     449             : 
     450             : // =======================================================================
     451             : 
     452             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

Generated by: LCOV version 1.10