229 lines
8 KiB
C++
229 lines
8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#include "generic/geninst.h"
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#include "generic/genpspgraphics.h"
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#include "generic/glyphcache.hxx"
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#include "vcl/sysdata.hxx"
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#include "outfont.hxx"
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#include "generic/printergfx.hxx"
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#include "salbmp.hxx"
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#include "impfont.hxx"
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#include "outfont.hxx"
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#include "outdev.h"
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#include "fontsubset.hxx"
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#include "salprn.hxx"
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#include "region.h"
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// ===========================================================================
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// platform specific font substitution hooks
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// ===========================================================================
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class FcPreMatchSubstititution
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: public ImplPreMatchFontSubstitution
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{
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public:
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bool FindFontSubstitute( FontSelectPattern& ) const;
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};
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class FcGlyphFallbackSubstititution
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: public ImplGlyphFallbackFontSubstitution
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{
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// TODO: add a cache
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public:
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bool FindFontSubstitute( FontSelectPattern&, rtl::OUString& rMissingCodes ) const;
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};
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int SalGenericInstance::FetchFontSubstitutionFlags()
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{
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// init font substitution defaults
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int nDisableBits = 0;
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#ifdef SOLARIS
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nDisableBits = 1; // disable "font fallback" here on default
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#endif
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// apply the environment variable if any
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const char* pEnvStr = ::getenv( "SAL_DISABLE_FC_SUBST" );
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if( pEnvStr )
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{
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if( (*pEnvStr >= '0') && (*pEnvStr <= '9') )
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nDisableBits = (*pEnvStr - '0');
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else
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nDisableBits = ~0U; // no specific bits set: disable all
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}
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return nDisableBits;
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}
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void SalGenericInstance::RegisterFontSubstitutors( ImplDevFontList* pList )
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{
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// init font substitution defaults
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int nDisableBits = 0;
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#ifdef SOLARIS
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nDisableBits = 1; // disable "font fallback" here on default
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#endif
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// apply the environment variable if any
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const char* pEnvStr = ::getenv( "SAL_DISABLE_FC_SUBST" );
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if( pEnvStr )
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{
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if( (*pEnvStr >= '0') && (*pEnvStr <= '9') )
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nDisableBits = (*pEnvStr - '0');
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else
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nDisableBits = ~0U; // no specific bits set: disable all
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}
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// register font fallback substitutions (unless disabled by bit0)
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if( (nDisableBits & 1) == 0 )
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{
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static FcPreMatchSubstititution aSubstPreMatch;
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pList->SetPreMatchHook( &aSubstPreMatch );
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}
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// register glyph fallback substitutions (unless disabled by bit1)
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if( (nDisableBits & 2) == 0 )
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{
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static FcGlyphFallbackSubstititution aSubstFallback;
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pList->SetFallbackHook( &aSubstFallback );
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}
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}
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// -----------------------------------------------------------------------
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static FontSelectPattern GetFcSubstitute(const FontSelectPattern &rFontSelData, rtl::OUString& rMissingCodes )
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{
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FontSelectPattern aSubstituted(rFontSelData);
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const psp::PrintFontManager& rMgr = psp::PrintFontManager::get();
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rMgr.Substitute(aSubstituted, rMissingCodes);
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return aSubstituted;
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}
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namespace
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{
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bool uselessmatch(const FontSelectPattern &rOrig, const FontSelectPattern &rNew)
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{
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return
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(
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rOrig.maTargetName == rNew.maSearchName &&
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rOrig.meWeight == rNew.meWeight &&
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rOrig.meItalic == rNew.meItalic &&
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rOrig.mePitch == rNew.mePitch &&
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rOrig.meWidthType == rNew.meWidthType
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);
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}
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}
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//--------------------------------------------------------------------------
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bool FcPreMatchSubstititution::FindFontSubstitute( FontSelectPattern &rFontSelData ) const
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{
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// We dont' actually want to talk to Fontconfig at all for symbol fonts
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if( rFontSelData.IsSymbolFont() )
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return false;
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// StarSymbol is a unicode font, but it still deserves the symbol flag
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if( 0 == rFontSelData.maSearchName.CompareIgnoreCaseToAscii( "starsymbol", 10)
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|| 0 == rFontSelData.maSearchName.CompareIgnoreCaseToAscii( "opensymbol", 10) )
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return false;
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//Note: see fdo#41556 if you feel compelled to cache the results here,
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//remember that fontconfig can return e.g. an italic font for a non-italic
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//input and/or different fonts depending on fontsize, bold, etc settings so
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//don't cache just on the name, cache on all the input and be don't just
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//return the original selection data with the fontname updated
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rtl::OUString aDummy;
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const FontSelectPattern aOut = GetFcSubstitute( rFontSelData, aDummy );
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if( !aOut.maSearchName.Len() )
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return false;
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const bool bHaveSubstitute = !uselessmatch( rFontSelData, aOut );
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#ifdef DEBUG
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const ByteString aOrigName( rFontSelData.maTargetName, RTL_TEXTENCODING_UTF8 );
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const ByteString aSubstName( aOut.maSearchName, RTL_TEXTENCODING_UTF8 );
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printf( "FcPreMatchSubstititution \"%s\" bipw=%d%d%d%d -> ",
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aOrigName.GetBuffer(), rFontSelData.meWeight, rFontSelData.meItalic,
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rFontSelData.mePitch, rFontSelData.meWidthType );
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if( !bHaveSubstitute )
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printf( "no substitute available\n" );
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else
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printf( "\"%s\" bipw=%d%d%d%d\n", aSubstName.GetBuffer(),
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aOut.meWeight, aOut.meItalic, aOut.mePitch, aOut.meWidthType );
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#endif
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if( bHaveSubstitute )
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rFontSelData = aOut;
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return bHaveSubstitute;
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}
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// -----------------------------------------------------------------------
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bool FcGlyphFallbackSubstititution::FindFontSubstitute( FontSelectPattern& rFontSelData,
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rtl::OUString& rMissingCodes ) const
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{
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// We dont' actually want to talk to Fontconfig at all for symbol fonts
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if( rFontSelData.IsSymbolFont() )
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return false;
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// StarSymbol is a unicode font, but it still deserves the symbol flag
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if( 0 == rFontSelData.maSearchName.CompareIgnoreCaseToAscii( "starsymbol", 10)
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|| 0 == rFontSelData.maSearchName.CompareIgnoreCaseToAscii( "opensymbol", 10) )
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return false;
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const FontSelectPattern aOut = GetFcSubstitute( rFontSelData, rMissingCodes );
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// TODO: cache the unicode + srcfont specific result
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// FC doing it would be preferable because it knows the invariables
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// e.g. FC knows the FC rule that all Arial gets replaced by LiberationSans
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// whereas we would have to check for every size or attribute
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if( !aOut.maSearchName.Len() )
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return false;
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const bool bHaveSubstitute = !uselessmatch( rFontSelData, aOut );
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#ifdef DEBUG
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const ByteString aOrigName( rFontSelData.maTargetName, RTL_TEXTENCODING_UTF8 );
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const ByteString aSubstName( aOut.maSearchName, RTL_TEXTENCODING_UTF8 );
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printf( "FcGFSubstititution \"%s\" bipw=%d%d%d%d ->",
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aOrigName.GetBuffer(), rFontSelData.meWeight, rFontSelData.meItalic,
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rFontSelData.mePitch, rFontSelData.meWidthType );
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if( !bHaveSubstitute )
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printf( "no substitute available\n" );
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else
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printf( "\"%s\" bipw=%d%d%d%d\n", aSubstName.GetBuffer(),
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aOut.meWeight, aOut.meItalic, aOut.mePitch, aOut.meWidthType );
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#endif
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if( bHaveSubstitute )
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rFontSelData = aOut;
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return bHaveSubstitute;
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}
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// ===========================================================================
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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