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