vcl: migrate font functions from outdev/font.cxx to own files

I have moved all ImplFontAttributes and ImplFontCache functions from
vcl/source/outdev/font.cxx to vcl/source/font/fontattributes.cxx and
vcl/source/font/fontcache.cxx accordingly.

Change-Id: I12ca80799828a772482424da171cc76bffaac43d

1 files changed, 0 insertions, 581 deletions

diff --git a/vcl/source/outdev/font.cxx b/vcl/source/outdev/font.cxx
index 4593900da3cf..6a0faa965dad 100644
--- a/vcl/source/outdev/font.cxx
+++ b/vcl/source/outdev/font.cxx
@@ -1011,305 +1011,6 @@ FontSelectPatternAttributes::FontSelectPatternAttributes( const vcl::Font& rFont
         mnWidth = -mnWidth;
 }
 
-size_t ImplFontCache::IFSD_Hash::operator()( const FontSelectPattern& rFSD ) const
-{
-    return rFSD.hashCode();
-}
-
-bool ImplFontCache::IFSD_Equal::operator()(const FontSelectPattern& rA, const FontSelectPattern& rB) const
-{
-    // check normalized font family name
-    if( rA.maSearchName != rB.maSearchName )
-        return false;
-
-    // check font transformation
-    if( (rA.mnHeight       != rB.mnHeight)
-    ||  (rA.mnWidth        != rB.mnWidth)
-    ||  (rA.mnOrientation  != rB.mnOrientation) )
-        return false;
-
-    // check mapping relevant attributes
-    if( (rA.mbVertical     != rB.mbVertical)
-    ||  (rA.meLanguage     != rB.meLanguage) )
-        return false;
-
-    // check font face attributes
-    if( (rA.GetWeight()       != rB.GetWeight())
-    ||  (rA.GetSlantType()    != rB.GetSlantType())
-//  ||  (rA.meFamily       != rB.meFamily) // TODO: remove this mostly obsolete member
-    ||  (rA.GetPitch()     != rB.GetPitch()) )
-        return false;
-
-    // check style name
-    if( rA.GetStyleName() != rB.GetStyleName() )
-        return false;
-
-    // Symbol fonts may recode from one type to another So they are only
-    // safely equivalent for equal targets
-    if (
-        (rA.mpFontData && rA.mpFontData->IsSymbolFont()) ||
-        (rB.mpFontData && rB.mpFontData->IsSymbolFont())
-       )
-    {
-        if (rA.maTargetName != rB.maTargetName)
-            return false;
-    }
-
-#if ENABLE_GRAPHITE
-    // check for features
-    if ((rA.maTargetName.indexOf(grutils::GrFeatureParser::FEAT_PREFIX)
-         != -1 ||
-         rB.maTargetName.indexOf(grutils::GrFeatureParser::FEAT_PREFIX)
-         != -1) && rA.maTargetName != rB.maTargetName)
-        return false;
-#endif
-
-    if (rA.mbEmbolden != rB.mbEmbolden)
-        return false;
-
-    if (rA.maItalicMatrix != rB.maItalicMatrix)
-        return false;
-
-    return true;
-}
-
-ImplFontCache::ImplFontCache()
-:   mpFirstEntry( nullptr ),
-    mnRef0Count( 0 )
-{}
-
-ImplFontCache::~ImplFontCache()
-{
-    FontInstanceList::iterator it = maFontInstanceList.begin();
-    for(; it != maFontInstanceList.end(); ++it )
-    {
-        ImplFontEntry* pEntry = (*it).second;
-        delete pEntry;
-    }
-}
-
-ImplFontEntry* ImplFontCache::GetFontEntry( PhysicalFontCollection* pFontList,
-    const vcl::Font& rFont, const Size& rSize, float fExactHeight )
-{
-    OUString aSearchName = rFont.GetName();
-
-    // initialize internal font request object
-    FontSelectPattern aFontSelData( rFont, aSearchName, rSize, fExactHeight );
-    return GetFontEntry( pFontList, aFontSelData );
-}
-
-ImplFontEntry* ImplFontCache::GetFontEntry( PhysicalFontCollection* pFontList,
-    FontSelectPattern& aFontSelData )
-{
-    // check if a directly matching logical font instance is already cached,
-    // the most recently used font usually has a hit rate of >50%
-    ImplFontEntry *pEntry = nullptr;
-    PhysicalFontFamily* pFontFamily = nullptr;
-    IFSD_Equal aIFSD_Equal;
-    if( mpFirstEntry && aIFSD_Equal( aFontSelData, mpFirstEntry->maFontSelData ) )
-        pEntry = mpFirstEntry;
-    else
-    {
-        FontInstanceList::iterator it = maFontInstanceList.find( aFontSelData );
-        if( it != maFontInstanceList.end() )
-            pEntry = (*it).second;
-    }
-
-    if( !pEntry ) // no direct cache hit
-    {
-        // find the best matching logical font family and update font selector accordingly
-        pFontFamily = pFontList->FindFontFamilyByFont( aFontSelData );
-        DBG_ASSERT( (pFontFamily != nullptr), "ImplFontCache::Get() No logical font found!" );
-        if( pFontFamily )
-            aFontSelData.maSearchName = pFontFamily->GetSearchName();
-
-        // check if an indirectly matching logical font instance is already cached
-        FontInstanceList::iterator it = maFontInstanceList.find( aFontSelData );
-        if( it != maFontInstanceList.end() )
-        {
-            // we have an indirect cache hit
-            pEntry = (*it).second;
-        }
-    }
-
-    PhysicalFontFace* pFontData = nullptr;
-
-    if (!pEntry && pFontFamily)// no cache hit => find the best matching physical font face
-    {
-        bool bOrigWasSymbol = aFontSelData.mpFontData && aFontSelData.mpFontData->IsSymbolFont();
-        pFontData = pFontFamily->FindBestFontFace( aFontSelData );
-        aFontSelData.mpFontData = pFontData;
-        bool bNewIsSymbol = aFontSelData.mpFontData && aFontSelData.mpFontData->IsSymbolFont();
-
-        if (bNewIsSymbol != bOrigWasSymbol)
-        {
-            // it is possible, though generally unlikely, that at this point we
-            // will attempt to use a symbol font as a last-ditch fallback for a
-            // non-symbol font request or vice versa, and by changing
-            // aFontSelData.mpFontData to/from a symbol font we may now find
-            // something in the cache that can be reused which previously
-            // wasn't a candidate
-            FontInstanceList::iterator it = maFontInstanceList.find( aFontSelData );
-            if( it != maFontInstanceList.end() )
-                pEntry = (*it).second;
-        }
-    }
-
-    if( pEntry ) // cache hit => use existing font instance
-    {
-        // increase the font instance's reference count
-        Acquire(pEntry);
-    }
-
-    if (!pEntry && pFontData)// still no cache hit => create a new font instance
-    {
-        // create a new logical font instance from this physical font face
-        pEntry = pFontData->CreateFontInstance( aFontSelData );
-        pEntry->m_pFontCache = this;
-
-        // if we're subtituting from or to a symbol font we may need a symbol
-        // conversion table
-        if( pFontData->IsSymbolFont() || aFontSelData.IsSymbolFont() )
-        {
-            if( aFontSelData.maTargetName != aFontSelData.maSearchName )
-                pEntry->mpConversion = ConvertChar::GetRecodeData( aFontSelData.maTargetName, aFontSelData.maSearchName );
-        }
-
-#ifdef MACOSX
-        //It might be better to dig out the font version of the target font
-        //to see if it's a modern re-coded apple symbol font in case that
-        //font shows up on a different platform
-        if (!pEntry->mpConversion &&
-            aFontSelData.maTargetName.equalsIgnoreAsciiCase("symbol") &&
-            aFontSelData.maSearchName.equalsIgnoreAsciiCase("symbol"))
-        {
-            pEntry->mpConversion = ConvertChar::GetRecodeData( "Symbol", "AppleSymbol" );
-        }
-#endif
-
-        // add the new entry to the cache
-        maFontInstanceList[ aFontSelData ] = pEntry;
-    }
-
-    mpFirstEntry = pEntry;
-    return pEntry;
-}
-
-ImplFontEntry* ImplFontCache::GetGlyphFallbackFont( PhysicalFontCollection* pFontCollection,
-    FontSelectPattern& rFontSelData, int nFallbackLevel, OUString& rMissingCodes )
-{
-    // get a candidate font for glyph fallback
-    // unless the previously selected font got a device specific substitution
-    // e.g. PsPrint Arial->Helvetica for udiaeresis when Helvetica doesn't support it
-    if( nFallbackLevel >= 1)
-    {
-        PhysicalFontFamily* pFallbackData = nullptr;
-
-        //fdo#33898 If someone has EUDC installed then they really want that to
-        //be used as the first-choice glyph fallback seeing as it's filled with
-        //private area codes with don't make any sense in any other font so
-        //prioritise it here if it's available. Ideally we would remove from
-        //rMissingCodes all the glyphs which it is able to resolve as an
-        //optimization, but that's tricky to achieve cross-platform without
-        //sufficient heavy-weight code that's likely to undo the value of the
-        //optimization
-        if (nFallbackLevel == 1)
-            pFallbackData = pFontCollection->FindFontFamily("EUDC");
-        if (!pFallbackData)
-            pFallbackData = pFontCollection->GetGlyphFallbackFont(rFontSelData, rMissingCodes, nFallbackLevel-1);
-        // escape when there are no font candidates
-        if( !pFallbackData  )
-            return nullptr;
-        // override the font name
-        rFontSelData.SetFamilyName( pFallbackData->GetFamilyName() );
-        // clear the cached normalized name
-        rFontSelData.maSearchName.clear();
-    }
-
-    ImplFontEntry* pFallbackFont = GetFontEntry( pFontCollection, rFontSelData );
-    return pFallbackFont;
-}
-
-void ImplFontCache::Acquire(ImplFontEntry* pEntry)
-{
-    assert(pEntry->m_pFontCache == this);
-
-    if (0 == pEntry->mnRefCount++)
-        --mnRef0Count;
-}
-
-void ImplFontCache::Release(ImplFontEntry* pEntry)
-{
-    static const int FONTCACHE_MAX = getenv("LO_TESTNAME") ? 1 : 50;
-
-    assert(pEntry->mnRefCount > 0 && "ImplFontCache::Release() - font refcount underflow");
-    if( --pEntry->mnRefCount > 0 )
-        return;
-
-    if (++mnRef0Count < FONTCACHE_MAX)
-        return;
-
-    assert(CountUnreferencedEntries() == mnRef0Count);
-
-    // remove unused entries from font instance cache
-    FontInstanceList::iterator it_next = maFontInstanceList.begin();
-    while( it_next != maFontInstanceList.end() )
-    {
-        FontInstanceList::iterator it = it_next++;
-        ImplFontEntry* pFontEntry = (*it).second;
-        if( pFontEntry->mnRefCount > 0 )
-            continue;
-
-        maFontInstanceList.erase( it );
-        delete pFontEntry;
-        --mnRef0Count;
-        assert(mnRef0Count>=0 && "ImplFontCache::Release() - refcount0 underflow");
-
-        if( mpFirstEntry == pFontEntry )
-            mpFirstEntry = nullptr;
-    }
-
-    assert(mnRef0Count==0 && "ImplFontCache::Release() - refcount0 mismatch");
-}
-
-int ImplFontCache::CountUnreferencedEntries() const
-{
-    size_t nCount = 0;
-    // count unreferenced entries
-    for (FontInstanceList::const_iterator it = maFontInstanceList.begin();
-         it != maFontInstanceList.end(); ++it)
-    {
-        const ImplFontEntry* pFontEntry = it->second;
-        if (pFontEntry->mnRefCount > 0)
-            continue;
-        ++nCount;
-    }
-    return nCount;
-}
-
-void ImplFontCache::Invalidate()
-{
-    assert(CountUnreferencedEntries() == mnRef0Count);
-
-    // delete unreferenced entries
-    FontInstanceList::iterator it = maFontInstanceList.begin();
-    for(; it != maFontInstanceList.end(); ++it )
-    {
-        ImplFontEntry* pFontEntry = (*it).second;
-        if( pFontEntry->mnRefCount > 0 )
-            continue;
-
-        delete pFontEntry;
-        --mnRef0Count;
-    }
-
-    // #112304# make sure the font cache is really clean
-    mpFirstEntry = nullptr;
-    maFontInstanceList.clear();
-
-    assert(mnRef0Count==0 && "ImplFontCache::Invalidate() - mnRef0Count non-zero");
-}
-
 void OutputDevice::ImplInitFontList() const
 {
     if( !mpFontCollection->Count() )
@@ -1545,288 +1246,6 @@ void OutputDevice::SetFontOrientation( ImplFontEntry* const pFontEntry ) const
     }
 }
 
-bool ImplFontAttributes::CompareDeviceIndependentFontAttributes(const ImplFontAttributes& rOther) const
-{
-    if (maFamilyName != rOther.maFamilyName)
-        return false;
-
-    if (maStyleName != rOther.maStyleName)
-        return false;
-
-    if (meWeight != rOther.meWeight)
-        return false;
-
-    if (meItalic != rOther.meItalic)
-        return false;
-
-    if (meFamily != rOther.meFamily)
-        return false;
-
-    if (mePitch != rOther.mePitch)
-        return false;
-
-    if (meWidthType != rOther.meWidthType)
-        return false;
-
-    if (mbSymbolFlag != rOther.mbSymbolFlag)
-        return false;
-
-    return true;
-}
-
-ImplFontAttributes::ImplFontAttributes()
-    : mnWidth ( 0 )
-    , mnOrientation( 0 )
-    , mnAscent( 0 )
-    , mnDescent( 0 )
-    , mnIntLeading( 0 )
-    , mnExtLeading( 0 )
-    , mnSlant( 0 )
-    , mnMinKashida( 0 )
-    , mbScalableFont( false )
-    , mbTrueTypeFont( false )
-    , mbKernableFont( false )
-    , mbFullstopCentered( false )
-    , mnBulletOffset( 0 )
-    , mnUnderlineSize( 0 )
-    , mnUnderlineOffset( 0 )
-    , mnBUnderlineSize( 0 )
-    , mnBUnderlineOffset( 0 )
-    , mnDUnderlineSize( 0 )
-    , mnDUnderlineOffset1( 0 )
-    , mnDUnderlineOffset2( 0 )
-    , mnWUnderlineSize( 0 )
-    , mnWUnderlineOffset( 0 )
-    , mnAboveUnderlineSize( 0 )
-    , mnAboveUnderlineOffset( 0 )
-    , mnAboveBUnderlineSize( 0 )
-    , mnAboveBUnderlineOffset( 0 )
-    , mnAboveDUnderlineSize( 0 )
-    , mnAboveDUnderlineOffset1( 0 )
-    , mnAboveDUnderlineOffset2( 0 )
-    , mnAboveWUnderlineSize( 0 )
-    , mnAboveWUnderlineOffset( 0 )
-    , mnStrikeoutSize( 0 )
-    , mnStrikeoutOffset( 0 )
-    , mnBStrikeoutSize( 0 )
-    , mnBStrikeoutOffset( 0 )
-    , mnDStrikeoutSize( 0 )
-    , mnDStrikeoutOffset1( 0 )
-    , mnDStrikeoutOffset2( 0 )
-{
-    // empty
-}
-
-ImplFontAttributes::ImplFontAttributes( const FontSelectPattern& rFontSelData )
-    : mnWidth ( rFontSelData.mnWidth )
-    , mnOrientation( (short)(rFontSelData.mnOrientation) )
-    , mnAscent( 0 )
-    , mnDescent( 0 )
-    , mnIntLeading( 0 )
-    , mnExtLeading( 0 )
-    , mnSlant( 0 )
-    , mnMinKashida( 0 )
-    , mbScalableFont( false )
-    , mbTrueTypeFont( false )
-    , mbKernableFont( false )
-    , mbFullstopCentered( false )
-    , mnBulletOffset( 0 )
-    , mnUnderlineSize( 0 )
-    , mnUnderlineOffset( 0 )
-    , mnBUnderlineSize( 0 )
-    , mnBUnderlineOffset( 0 )
-    , mnDUnderlineSize( 0 )
-    , mnDUnderlineOffset1( 0 )
-    , mnDUnderlineOffset2( 0 )
-    , mnWUnderlineSize( 0 )
-    , mnWUnderlineOffset( 0 )
-    , mnAboveUnderlineSize( 0 )
-    , mnAboveUnderlineOffset( 0 )
-    , mnAboveBUnderlineSize( 0 )
-    , mnAboveBUnderlineOffset( 0 )
-    , mnAboveDUnderlineSize( 0 )
-    , mnAboveDUnderlineOffset1( 0 )
-    , mnAboveDUnderlineOffset2( 0 )
-    , mnAboveWUnderlineSize( 0 )
-    , mnAboveWUnderlineOffset( 0 )
-    , mnStrikeoutSize( 0 )
-    , mnStrikeoutOffset( 0 )
-    , mnBStrikeoutSize( 0 )
-    , mnBStrikeoutOffset( 0 )
-    , mnDStrikeoutSize( 0 )
-    , mnDStrikeoutOffset1( 0 )
-    , mnDStrikeoutOffset2( 0 )
-{
-    // intialize the used font name
-    if( rFontSelData.mpFontData )
-    {
-        SetFamilyName( rFontSelData.mpFontData->GetFamilyName() );
-        SetStyleName( rFontSelData.mpFontData->GetStyleName() );
-        SetBuiltInFontFlag( rFontSelData.mpFontData->IsBuiltInFont() );
-        SetKernableFlag( true );
-    }
-    else
-    {
-        sal_Int32 nTokenPos = 0;
-        SetFamilyName( GetNextFontToken( rFontSelData.GetFamilyName(), nTokenPos ) );
-        SetStyleName( rFontSelData.GetStyleName() );
-        SetBuiltInFontFlag( false );
-        SetKernableFlag( false );
-    }
-}
-
-
-void ImplFontAttributes::ImplInitTextLineSize( const OutputDevice* pDev )
-{
-    long nDescent = mnDescent;
-    if ( nDescent <= 0 )
-    {
-        nDescent = mnAscent / 10;
-        if ( !nDescent )
-            nDescent = 1;
-    }
-
-    // #i55341# for some fonts it is not a good idea to calculate
-    // their text line metrics from the real font descent
-    // => work around this problem just for these fonts
-    if( 3*nDescent > mnAscent )
-        nDescent = mnAscent / 3;
-
-    long nLineHeight = ((nDescent*25)+50) / 100;
-    if ( !nLineHeight )
-        nLineHeight = 1;
-    long nLineHeight2 = nLineHeight / 2;
-    if ( !nLineHeight2 )
-        nLineHeight2 = 1;
-
-    long nBLineHeight = ((nDescent*50)+50) / 100;
-    if ( nBLineHeight == nLineHeight )
-        nBLineHeight++;
-    long nBLineHeight2 = nBLineHeight/2;
-    if ( !nBLineHeight2 )
-        nBLineHeight2 = 1;
-
-    long n2LineHeight = ((nDescent*16)+50) / 100;
-    if ( !n2LineHeight )
-        n2LineHeight = 1;
-    long n2LineDY = n2LineHeight;
-     /* #117909#
-      * add some pixels to minimum double line distance on higher resolution devices
-      */
-    long nMin2LineDY = 1 + pDev->GetDPIY()/150;
-    if ( n2LineDY < nMin2LineDY )
-        n2LineDY = nMin2LineDY;
-    long n2LineDY2 = n2LineDY/2;
-    if ( !n2LineDY2 )
-        n2LineDY2 = 1;
-
-    long nUnderlineOffset = mnDescent/2 + 1;
-    long nStrikeoutOffset = -((mnAscent - mnIntLeading) / 3);
-
-    mnUnderlineSize        = nLineHeight;
-    mnUnderlineOffset      = nUnderlineOffset - nLineHeight2;
-
-    mnBUnderlineSize       = nBLineHeight;
-    mnBUnderlineOffset     = nUnderlineOffset - nBLineHeight2;
-
-    mnDUnderlineSize       = n2LineHeight;
-    mnDUnderlineOffset1    = nUnderlineOffset - n2LineDY2 - n2LineHeight;
-    mnDUnderlineOffset2    = mnDUnderlineOffset1 + n2LineDY + n2LineHeight;
-
-    long nWCalcSize = mnDescent;
-    if ( nWCalcSize < 6 )
-    {
-        if ( (nWCalcSize == 1) || (nWCalcSize == 2) )
-            mnWUnderlineSize = nWCalcSize;
-        else
-            mnWUnderlineSize = 3;
-    }
-    else
-        mnWUnderlineSize = ((nWCalcSize*50)+50) / 100;
-
-    // Don't assume that wavelines are never placed below the descent, because for most fonts the waveline
-    // is drawn into the text
-    mnWUnderlineOffset     = nUnderlineOffset;
-
-    mnStrikeoutSize        = nLineHeight;
-    mnStrikeoutOffset      = nStrikeoutOffset - nLineHeight2;
-
-    mnBStrikeoutSize       = nBLineHeight;
-    mnBStrikeoutOffset     = nStrikeoutOffset - nBLineHeight2;
-
-    mnDStrikeoutSize       = n2LineHeight;
-    mnDStrikeoutOffset1    = nStrikeoutOffset - n2LineDY2 - n2LineHeight;
-    mnDStrikeoutOffset2    = mnDStrikeoutOffset1 + n2LineDY + n2LineHeight;
-
-    const vcl::Font& rFont ( pDev->GetFont() );
-    bool bCentered = true;
-    if (MsLangId::isCJK(rFont.GetLanguage()))
-    {
-        const OUString sFullstop( sal_Unicode( 0x3001 ) ); // Fullwidth fullstop
-        Rectangle aRect;
-        pDev->GetTextBoundRect( aRect, sFullstop );
-        const sal_uInt16 nH = rFont.GetSize().Height();
-        const sal_uInt16 nB = aRect.Left();
-        // Use 18.75% as a threshold to define a centered fullwidth fullstop.
-        // In general, nB/nH < 5% for most Japanese fonts.
-        bCentered = nB > (((nH >> 1)+nH)>>3);
-    }
-    SetFullstopCenteredFlag( bCentered );
-
-    mnBulletOffset = ( pDev->GetTextWidth( OUString( sal_Unicode( 0x20 ) ) ) - pDev->GetTextWidth( OUString( sal_Unicode( 0xb7 ) ) ) ) >> 1 ;
-
-}
-
-void ImplFontAttributes::ImplInitAboveTextLineSize()
-{
-    long nIntLeading = mnIntLeading;
-    // TODO: assess usage of nLeading below (changed in extleading CWS)
-    // if no leading is available, we assume 15% of the ascent
-    if ( nIntLeading <= 0 )
-    {
-        nIntLeading = mnAscent*15/100;
-        if ( !nIntLeading )
-            nIntLeading = 1;
-    }
-
-    long nLineHeight = ((nIntLeading*25)+50) / 100;
-    if ( !nLineHeight )
-        nLineHeight = 1;
-
-    long nBLineHeight = ((nIntLeading*50)+50) / 100;
-    if ( nBLineHeight == nLineHeight )
-        nBLineHeight++;
-
-    long n2LineHeight = ((nIntLeading*16)+50) / 100;
-    if ( !n2LineHeight )
-        n2LineHeight = 1;
-
-    long nCeiling = -mnAscent;
-
-    mnAboveUnderlineSize       = nLineHeight;
-    mnAboveUnderlineOffset     = nCeiling + (nIntLeading - nLineHeight + 1) / 2;
-
-    mnAboveBUnderlineSize      = nBLineHeight;
-    mnAboveBUnderlineOffset    = nCeiling + (nIntLeading - nBLineHeight + 1) / 2;
-
-    mnAboveDUnderlineSize      = n2LineHeight;
-    mnAboveDUnderlineOffset1   = nCeiling + (nIntLeading - 3*n2LineHeight + 1) / 2;
-    mnAboveDUnderlineOffset2   = nCeiling + (nIntLeading +   n2LineHeight + 1) / 2;
-
-    long nWCalcSize = nIntLeading;
-    if ( nWCalcSize < 6 )
-    {
-        if ( (nWCalcSize == 1) || (nWCalcSize == 2) )
-            mnAboveWUnderlineSize = nWCalcSize;
-        else
-            mnAboveWUnderlineSize = 3;
-    }
-    else
-        mnAboveWUnderlineSize = ((nWCalcSize*50)+50) / 100;
-
-    mnAboveWUnderlineOffset = nCeiling + (nIntLeading + 1) / 2;
-}
-
 void OutputDevice::ImplDrawEmphasisMark( long nBaseX, long nX, long nY,
                                          const tools::PolyPolygon& rPolyPoly, bool bPolyLine,
                                          const Rectangle& rRect1, const Rectangle& rRect2 )