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Diffstat (limited to 'vcl/unx/generic/fontmanager/fontconfig.cxx')
| -rw-r--r-- | vcl/unx/generic/fontmanager/fontconfig.cxx | 1316 |
1 files changed, 1316 insertions, 0 deletions
diff --git a/vcl/unx/generic/fontmanager/fontconfig.cxx b/vcl/unx/generic/fontmanager/fontconfig.cxx new file mode 100644 index 000000000..c44cdd2ee --- /dev/null +++ b/vcl/unx/generic/fontmanager/fontconfig.cxx @@ -0,0 +1,1316 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#if defined __GNUC__ && !defined __clang_ && __GNUC__ == 10 +// gcc 10.2.0 gets unhappy about one of the OString inside PrintFont at line 656 (while at least a +// recent GCC 12 trunk is happy); +// I have to turn it off here because the warning actually occurs inside rtl::OString +#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" +#endif + +#include <sal/config.h> + +#include <memory> +#include <string_view> + +#include <o3tl/lru_map.hxx> +#include <unx/fontmanager.hxx> +#include <unx/helper.hxx> +#include <comphelper/sequence.hxx> +#include <vcl/svapp.hxx> +#include <vcl/vclenum.hxx> +#include <font/FontSelectPattern.hxx> +#include <i18nlangtag/languagetag.hxx> +#include <i18nutil/unicode.hxx> +#include <rtl/strbuf.hxx> +#include <sal/log.hxx> +#include <tools/diagnose_ex.h> +#include <unicode/uchar.h> +#include <unicode/uscript.h> +#include <officecfg/Office/Common.hxx> +#include <org/freedesktop/PackageKit/SyncDbusSessionHelper.hpp> +#include <config_fonts.h> + +using namespace psp; + +#include <fontconfig/fontconfig.h> + +#include <cstdio> + +#include <unotools/configmgr.hxx> +#include <unotools/syslocaleoptions.hxx> + +#include <osl/process.h> + +#include <o3tl/hash_combine.hxx> +#include <utility> +#include <algorithm> + +using namespace osl; + +namespace +{ + +struct FontOptionsKey +{ + OUString m_sFamilyName; + int m_nFontSize; + FontItalic m_eItalic; + FontWeight m_eWeight; + FontWidth m_eWidth; + FontPitch m_ePitch; + + bool operator==(const FontOptionsKey& rOther) const + { + return m_sFamilyName == rOther.m_sFamilyName && + m_nFontSize == rOther.m_nFontSize && + m_eItalic == rOther.m_eItalic && + m_eWeight == rOther.m_eWeight && + m_eWidth == rOther.m_eWidth && + m_ePitch == rOther.m_ePitch; + } +}; + +} + +namespace std +{ + +template <> struct hash<FontOptionsKey> +{ + std::size_t operator()(const FontOptionsKey& k) const noexcept + { + std::size_t seed = k.m_sFamilyName.hashCode(); + o3tl::hash_combine(seed, k.m_nFontSize); + o3tl::hash_combine(seed, k.m_eItalic); + o3tl::hash_combine(seed, k.m_eWeight); + o3tl::hash_combine(seed, k.m_eWidth); + o3tl::hash_combine(seed, k.m_ePitch); + return seed; + } +}; + +} // end std namespace + +namespace +{ + +struct FcPatternDeleter +{ + void operator()(FcPattern* pPattern) const + { + FcPatternDestroy(pPattern); + } +}; + +typedef std::unique_ptr<FcPattern, FcPatternDeleter> FcPatternUniquePtr; + +class CachedFontConfigFontOptions +{ +private: + o3tl::lru_map<FontOptionsKey, FcPatternUniquePtr> lru_options_cache; + +public: + CachedFontConfigFontOptions() + : lru_options_cache(10) // arbitrary cache size of 10 + { + } + + std::unique_ptr<FontConfigFontOptions> lookup(const FontOptionsKey& rKey) + { + auto it = lru_options_cache.find(rKey); + if (it != lru_options_cache.end()) + return std::make_unique<FontConfigFontOptions>(FcPatternDuplicate(it->second.get())); + return nullptr; + } + + void cache(const FontOptionsKey& rKey, const FcPattern* pPattern) + { + lru_options_cache.insert(std::make_pair(rKey, FcPatternUniquePtr(FcPatternDuplicate(pPattern)))); + } + +}; + +typedef std::pair<FcChar8*, FcChar8*> lang_and_element; + +class FontCfgWrapper +{ + FcFontSet* m_pFontSet; + + void addFontSet( FcSetName ); + + FontCfgWrapper(); + ~FontCfgWrapper(); + +public: + static FontCfgWrapper& get(); + static void release(); + + FcFontSet* getFontSet(); + + void clear(); + +public: + FcResult LocalizedElementFromPattern(FcPattern const * pPattern, FcChar8 **family, + const char *elementtype, const char *elementlangtype); +//to-do, make private and add some cleaner accessor methods + std::unordered_map< OString, OString > m_aFontNameToLocalized; + std::unordered_map< OString, OString > m_aLocalizedToCanonical; + CachedFontConfigFontOptions m_aCachedFontOptions; +private: + void cacheLocalizedFontNames(const FcChar8 *origfontname, const FcChar8 *bestfontname, const std::vector< lang_and_element > &lang_and_elements); + + std::unique_ptr<LanguageTag> m_pLanguageTag; +}; + +} + +FontCfgWrapper::FontCfgWrapper() + : m_pFontSet( nullptr ) +{ + FcInit(); +} + +void FontCfgWrapper::addFontSet( FcSetName eSetName ) +{ + // Add only acceptable fonts to our config, for future fontconfig use. + FcFontSet* pOrig = FcConfigGetFonts( FcConfigGetCurrent(), eSetName ); + if( !pOrig ) + return; + + // filter the font sets to remove obsolete faces + for( int i = 0; i < pOrig->nfont; ++i ) + { + FcPattern* pPattern = pOrig->fonts[i]; + // #i115131# ignore non-scalable fonts + // Scalable fonts are usually outline fonts, but some bitmaps fonts + // (like Noto Color Emoji) are also scalable. + FcBool bScalable = FcFalse; + FcResult eScalableRes = FcPatternGetBool(pPattern, FC_SCALABLE, 0, &bScalable); + if ((eScalableRes != FcResultMatch) || (bScalable == FcFalse)) + continue; + + // Ignore Type 1 fonts, too. + FcChar8* pFormat = nullptr; + FcResult eFormatRes = FcPatternGetString(pPattern, FC_FONTFORMAT, 0, &pFormat); + if ((eFormatRes == FcResultMatch) && (strcmp(reinterpret_cast<char*>(pFormat), "Type 1") == 0)) + continue; + + FcPatternReference( pPattern ); + FcFontSetAdd( m_pFontSet, pPattern ); + } + + // TODO?: FcFontSetDestroy( pOrig ); +} + +namespace +{ + int compareFontNames(const FcPattern *a, const FcPattern *b) + { + FcChar8 *pNameA=nullptr, *pNameB=nullptr; + + bool bHaveA = FcPatternGetString(a, FC_FAMILY, 0, &pNameA) == FcResultMatch; + bool bHaveB = FcPatternGetString(b, FC_FAMILY, 0, &pNameB) == FcResultMatch; + + if (bHaveA && bHaveB) + return strcmp(reinterpret_cast<const char*>(pNameA), reinterpret_cast<const char*>(pNameB)); + + return int(bHaveA) - int(bHaveB); + } + + //Sort fonts so that fonts with the same family name are side-by-side, with + //those with higher version numbers first + class SortFont + { + public: + bool operator()(const FcPattern *a, const FcPattern *b) + { + int comp = compareFontNames(a, b); + if (comp != 0) + return comp < 0; + + int nVersionA=0, nVersionB=0; + + bool bHaveA = FcPatternGetInteger(a, FC_FONTVERSION, 0, &nVersionA) == FcResultMatch; + bool bHaveB = FcPatternGetInteger(b, FC_FONTVERSION, 0, &nVersionB) == FcResultMatch; + + if (bHaveA && bHaveB) + return nVersionA > nVersionB; + + return bHaveA > bHaveB; + } + }; + + //See fdo#30729 for where an old opensymbol installed system-wide can + //clobber the new opensymbol installed locally + + //See if this font is a duplicate with equal attributes which has already been + //inserted, or if it an older version of an inserted fonts. Depends on FcFontSet + //on being sorted with SortFont + bool isPreviouslyDuplicateOrObsoleted(FcFontSet const *pFSet, int i) + { + const FcPattern *a = pFSet->fonts[i]; + + FcPattern* pTestPatternA = FcPatternDuplicate(a); + FcPatternDel(pTestPatternA, FC_FILE); + FcPatternDel(pTestPatternA, FC_CHARSET); + FcPatternDel(pTestPatternA, FC_CAPABILITY); + FcPatternDel(pTestPatternA, FC_FONTVERSION); + FcPatternDel(pTestPatternA, FC_LANG); + + bool bIsDup(false); + + // fdo#66715: loop for case of several font files for same font + for (int j = i - 1; 0 <= j && !bIsDup; --j) + { + const FcPattern *b = pFSet->fonts[j]; + + if (compareFontNames(a, b) != 0) + break; + + FcPattern* pTestPatternB = FcPatternDuplicate(b); + FcPatternDel(pTestPatternB, FC_FILE); + FcPatternDel(pTestPatternB, FC_CHARSET); + FcPatternDel(pTestPatternB, FC_CAPABILITY); + FcPatternDel(pTestPatternB, FC_FONTVERSION); + FcPatternDel(pTestPatternB, FC_LANG); + + bIsDup = FcPatternEqual(pTestPatternA, pTestPatternB); + + FcPatternDestroy(pTestPatternB); + } + + FcPatternDestroy(pTestPatternA); + + return bIsDup; + } +} + +FcFontSet* FontCfgWrapper::getFontSet() +{ + if( !m_pFontSet ) + { + m_pFontSet = FcFontSetCreate(); + bool bRestrictFontSetToApplicationFonts = false; +#if HAVE_MORE_FONTS + bRestrictFontSetToApplicationFonts = getenv("SAL_ABORT_ON_NON_APPLICATION_FONT_USE") != nullptr; +#endif + if (!bRestrictFontSetToApplicationFonts) + addFontSet( FcSetSystem ); + addFontSet( FcSetApplication ); + + std::stable_sort(m_pFontSet->fonts,m_pFontSet->fonts+m_pFontSet->nfont,SortFont()); + } + + return m_pFontSet; +} + +FontCfgWrapper::~FontCfgWrapper() +{ + clear(); + //To-Do: get gtk vclplug smoketest to pass + //FcFini(); +} + +static FontCfgWrapper* pOneInstance = nullptr; + +FontCfgWrapper& FontCfgWrapper::get() +{ + if( ! pOneInstance ) + pOneInstance = new FontCfgWrapper(); + return *pOneInstance; +} + +void FontCfgWrapper::release() +{ + if( pOneInstance ) + { + delete pOneInstance; + pOneInstance = nullptr; + } +} + +namespace +{ + FcChar8* bestname(const std::vector<lang_and_element> &elements, const LanguageTag & rLangTag); + + FcChar8* bestname(const std::vector<lang_and_element> &elements, const LanguageTag & rLangTag) + { + FcChar8* candidate = elements.begin()->second; + /* FIXME-BCP47: once fontconfig supports language tags this + * language-territory stuff needs to be changed! */ + SAL_INFO_IF( !rLangTag.isIsoLocale(), "vcl.fonts", "localizedsorter::bestname - not an ISO locale"); + OString sLangMatch(OUStringToOString(rLangTag.getLanguage().toAsciiLowerCase(), RTL_TEXTENCODING_UTF8)); + OString sFullMatch = sLangMatch + + "-" + + OUStringToOString(rLangTag.getCountry().toAsciiLowerCase(), RTL_TEXTENCODING_UTF8); + + bool alreadyclosematch = false; + bool found_fallback_englishname = false; + for (auto const& element : elements) + { + const char *pLang = reinterpret_cast<const char*>(element.first); + if( sFullMatch == pLang) + { + // both language and country match + candidate = element.second; + break; + } + else if( alreadyclosematch ) + { + // current candidate matches lang of lang-TERRITORY + // override candidate only if there is a full match + continue; + } + else if( sLangMatch == pLang) + { + // just the language matches + candidate = element.second; + alreadyclosematch = true; + } + else if( found_fallback_englishname ) + { + // already found an english fallback, don't override candidate + // unless there is a better language match + continue; + } + else if( rtl_str_compare( pLang, "en") == 0) + { + // select a fallback candidate of the first english element + // name + candidate = element.second; + found_fallback_englishname = true; + } + } + return candidate; + } +} + +//Set up maps to quickly map between a fonts best UI name and all the rest of its names, and vice versa +void FontCfgWrapper::cacheLocalizedFontNames(const FcChar8 *origfontname, const FcChar8 *bestfontname, + const std::vector< lang_and_element > &lang_and_elements) +{ + for (auto const& element : lang_and_elements) + { + const char *candidate = reinterpret_cast<const char*>(element.second); + if (rtl_str_compare(candidate, reinterpret_cast<const char*>(bestfontname)) != 0) + m_aFontNameToLocalized[OString(candidate)] = OString(reinterpret_cast<const char*>(bestfontname)); + } + if (rtl_str_compare(reinterpret_cast<const char*>(origfontname), reinterpret_cast<const char*>(bestfontname)) != 0) + m_aLocalizedToCanonical[OString(reinterpret_cast<const char*>(bestfontname))] = OString(reinterpret_cast<const char*>(origfontname)); +} + +FcResult FontCfgWrapper::LocalizedElementFromPattern(FcPattern const * pPattern, FcChar8 **element, + const char *elementtype, const char *elementlangtype) +{ /* e. g.: ^ FC_FAMILY ^ FC_FAMILYLANG */ + FcChar8 *origelement; + FcResult eElementRes = FcPatternGetString( pPattern, elementtype, 0, &origelement ); + *element = origelement; + + if( eElementRes == FcResultMatch) + { + FcChar8* elementlang = nullptr; + if (FcPatternGetString( pPattern, elementlangtype, 0, &elementlang ) == FcResultMatch) + { + std::vector< lang_and_element > lang_and_elements; + lang_and_elements.emplace_back(elementlang, *element); + int k = 1; + while (true) + { + if (FcPatternGetString( pPattern, elementlangtype, k, &elementlang ) != FcResultMatch) + break; + if (FcPatternGetString( pPattern, elementtype, k, element ) != FcResultMatch) + break; + lang_and_elements.emplace_back(elementlang, *element); + ++k; + } + + if (!m_pLanguageTag) + m_pLanguageTag.reset(new LanguageTag(SvtSysLocaleOptions().GetRealUILanguageTag())); + + *element = bestname(lang_and_elements, *m_pLanguageTag); + + //if this element is a fontname, map the other names to this best-name + if (rtl_str_compare(elementtype, FC_FAMILY) == 0) + cacheLocalizedFontNames(origelement, *element, lang_and_elements); + } + } + + return eElementRes; +} + +void FontCfgWrapper::clear() +{ + m_aFontNameToLocalized.clear(); + m_aLocalizedToCanonical.clear(); + if( m_pFontSet ) + { + FcFontSetDestroy( m_pFontSet ); + m_pFontSet = nullptr; + } + m_pLanguageTag.reset(); +} + +/* + * PrintFontManager::initFontconfig + */ +void PrintFontManager::initFontconfig() +{ + FontCfgWrapper& rWrapper = FontCfgWrapper::get(); + rWrapper.clear(); +} + +namespace +{ + FontWeight convertWeight(int weight) + { + // set weight + if( weight <= FC_WEIGHT_THIN ) + return WEIGHT_THIN; + else if( weight <= FC_WEIGHT_ULTRALIGHT ) + return WEIGHT_ULTRALIGHT; + else if( weight <= FC_WEIGHT_LIGHT ) + return WEIGHT_LIGHT; + else if( weight <= FC_WEIGHT_BOOK ) + return WEIGHT_SEMILIGHT; + else if( weight <= FC_WEIGHT_NORMAL ) + return WEIGHT_NORMAL; + else if( weight <= FC_WEIGHT_MEDIUM ) + return WEIGHT_MEDIUM; + else if( weight <= FC_WEIGHT_SEMIBOLD ) + return WEIGHT_SEMIBOLD; + else if( weight <= FC_WEIGHT_BOLD ) + return WEIGHT_BOLD; + else if( weight <= FC_WEIGHT_ULTRABOLD ) + return WEIGHT_ULTRABOLD; + return WEIGHT_BLACK; + } + + FontItalic convertSlant(int slant) + { + // set italic + if( slant == FC_SLANT_ITALIC ) + return ITALIC_NORMAL; + else if( slant == FC_SLANT_OBLIQUE ) + return ITALIC_OBLIQUE; + return ITALIC_NONE; + } + + FontPitch convertSpacing(int spacing) + { + // set pitch + if( spacing == FC_MONO || spacing == FC_CHARCELL ) + return PITCH_FIXED; + return PITCH_VARIABLE; + } + + // translation: fontconfig enum -> vcl enum + FontWidth convertWidth(int width) + { + if (width == FC_WIDTH_ULTRACONDENSED) + return WIDTH_ULTRA_CONDENSED; + else if (width == FC_WIDTH_EXTRACONDENSED) + return WIDTH_EXTRA_CONDENSED; + else if (width == FC_WIDTH_CONDENSED) + return WIDTH_CONDENSED; + else if (width == FC_WIDTH_SEMICONDENSED) + return WIDTH_SEMI_CONDENSED; + else if (width == FC_WIDTH_SEMIEXPANDED) + return WIDTH_SEMI_EXPANDED; + else if (width == FC_WIDTH_EXPANDED) + return WIDTH_EXPANDED; + else if (width == FC_WIDTH_EXTRAEXPANDED) + return WIDTH_EXTRA_EXPANDED; + else if (width == FC_WIDTH_ULTRAEXPANDED) + return WIDTH_ULTRA_EXPANDED; + return WIDTH_NORMAL; + } +} + +//FontConfig doesn't come with a way to remove an element from a FontSet as far +//as I can see +static void lcl_FcFontSetRemove(FcFontSet* pFSet, int i) +{ + FcPatternDestroy(pFSet->fonts[i]); + + int nTail = pFSet->nfont - (i + 1); + --pFSet->nfont; + if (!nTail) + return; + memmove(pFSet->fonts + i, pFSet->fonts + i + 1, nTail*sizeof(FcPattern*)); +} + +namespace +{ + // for variable fonts, FC_INDEX has been changed such that the lower half is now the + // index of the font within the collection, and the upper half has been repurposed + // as the index within the variations + unsigned int GetCollectionIndex(unsigned int nEntryId) + { + return nEntryId & 0xFFFF; + } + + unsigned int GetVariationIndex(unsigned int nEntryId) + { + return nEntryId >> 16; + } +} + +void PrintFontManager::countFontconfigFonts() +{ + int nFonts = 0; + FontCfgWrapper& rWrapper = FontCfgWrapper::get(); + + FcFontSet* pFSet = rWrapper.getFontSet(); + const bool bMinimalFontset = utl::ConfigManager::IsFuzzing(); + if( pFSet ) + { + SAL_INFO("vcl.fonts", "found " << pFSet->nfont << " entries in fontconfig fontset"); + for( int i = 0; i < pFSet->nfont; i++ ) + { + FcChar8* file = nullptr; + FcChar8* family = nullptr; + FcChar8* style = nullptr; + FcChar8* format = nullptr; + int slant = 0; + int weight = 0; + int width = 0; + int spacing = 0; + int nEntryId = -1; + FcBool scalable = false; + + FcResult eFileRes = FcPatternGetString(pFSet->fonts[i], FC_FILE, 0, &file); + FcResult eFamilyRes = rWrapper.LocalizedElementFromPattern( pFSet->fonts[i], &family, FC_FAMILY, FC_FAMILYLANG ); + if (bMinimalFontset && strncmp(reinterpret_cast<char*>(family), "Liberation", strlen("Liberation"))) + continue; + FcResult eStyleRes = rWrapper.LocalizedElementFromPattern( pFSet->fonts[i], &style, FC_STYLE, FC_STYLELANG ); + FcResult eSlantRes = FcPatternGetInteger(pFSet->fonts[i], FC_SLANT, 0, &slant); + FcResult eWeightRes = FcPatternGetInteger(pFSet->fonts[i], FC_WEIGHT, 0, &weight); + FcResult eWidthRes = FcPatternGetInteger(pFSet->fonts[i], FC_WIDTH, 0, &width); + FcResult eSpacRes = FcPatternGetInteger(pFSet->fonts[i], FC_SPACING, 0, &spacing); + FcResult eScalableRes = FcPatternGetBool(pFSet->fonts[i], FC_SCALABLE, 0, &scalable); + FcResult eIndexRes = FcPatternGetInteger(pFSet->fonts[i], FC_INDEX, 0, &nEntryId); + FcResult eFormatRes = FcPatternGetString(pFSet->fonts[i], FC_FONTFORMAT, 0, &format); + + if( eFileRes != FcResultMatch || eFamilyRes != FcResultMatch || eScalableRes != FcResultMatch ) + continue; + + SAL_INFO( + "vcl.fonts.detail", + "found font \"" << family << "\" in file " << file << ", weight = " + << (eWeightRes == FcResultMatch ? weight : -1) << ", slant = " + << (eSpacRes == FcResultMatch ? slant : -1) << ", style = \"" + << (eStyleRes == FcResultMatch ? reinterpret_cast<const char*>(style) : "<nil>") + << "\", width = " << (eWeightRes == FcResultMatch ? width : -1) << ", spacing = " + << (eSpacRes == FcResultMatch ? spacing : -1) << ", scalable = " + << (eScalableRes == FcResultMatch ? scalable : -1) << ", format " + << (eFormatRes == FcResultMatch + ? reinterpret_cast<const char*>(format) : "<unknown>")); + +// OSL_ASSERT(eScalableRes != FcResultMatch || scalable); + + // only scalable fonts are usable to psprint anyway + if( eScalableRes == FcResultMatch && ! scalable ) + continue; + + if (isPreviouslyDuplicateOrObsoleted(pFSet, i)) + { + SAL_INFO("vcl.fonts.detail", "Ditching " << file << " as duplicate/obsolete"); + continue; + } + + // see if this font is already cached + // update attributes + OString aDir, aBase, aOrgPath( reinterpret_cast<char*>(file) ); + splitPath( aOrgPath, aDir, aBase ); + + int nDirID = getDirectoryAtom( aDir ); + SAL_INFO("vcl.fonts.detail", "file " << aBase << " not cached"); + // not known, analyze font file to get attributes + // not described by fontconfig (e.g. alias names, PSName) + if (eFormatRes != FcResultMatch) + format = nullptr; + std::vector<PrintFont> aFonts = analyzeFontFile( nDirID, aBase, reinterpret_cast<char*>(format) ); + if(aFonts.empty()) + { + SAL_INFO( + "vcl.fonts", "Warning: file \"" << aOrgPath << "\" is unusable to psprint"); + //remove font, reuse index + //we want to remove unusable fonts here, in case there is a usable font + //which duplicates the properties of the unusable one + + //not removing the unusable font will risk the usable font being rejected + //as a duplicate by isPreviouslyDuplicateOrObsoleted + lcl_FcFontSetRemove(pFSet, i--); + continue; + } + + std::optional<PrintFont> xUpdate; + + if (aFonts.size() == 1) // one font + xUpdate = aFonts.front(); + else // more than one font + { + // a collection entry, get the correct index + if( eIndexRes == FcResultMatch && nEntryId != -1 ) + { + int nCollectionEntry = GetCollectionIndex(nEntryId); + for (const auto & font : aFonts) + { + if( font.m_nCollectionEntry == nCollectionEntry ) + { + xUpdate = font; + break; + } + } + } + + if (xUpdate) + { + // update collection entry + // additional entries will be created in the cache + // if this is a new index (that is if the loop above + // ran to the end of the list) + xUpdate->m_nCollectionEntry = GetCollectionIndex(nEntryId); + } + else + { + SAL_INFO( + "vcl.fonts", + "multiple fonts for file, but no index in fontconfig pattern ! (index res =" + << eIndexRes << " collection entry = " << nEntryId + << "; file will not be used"); + // we have found more than one font in this file + // but fontconfig will not tell us which index is meant + // -> something is in disorder, do not use this font + } + } + + if (xUpdate) + { + // set family name + if( eWeightRes == FcResultMatch ) + xUpdate->m_eWeight = convertWeight(weight); + if( eWidthRes == FcResultMatch ) + xUpdate->m_eWidth = convertWidth(width); + if( eSpacRes == FcResultMatch ) + xUpdate->m_ePitch = convertSpacing(spacing); + if( eSlantRes == FcResultMatch ) + xUpdate->m_eItalic = convertSlant(slant); + if( eStyleRes == FcResultMatch ) + xUpdate->m_aStyleName = OStringToOUString( std::string_view( reinterpret_cast<char*>(style) ), RTL_TEXTENCODING_UTF8 ); + if( eIndexRes == FcResultMatch ) + xUpdate->m_nVariationEntry = GetVariationIndex(nEntryId); + + // sort into known fonts + fontID aFont = m_nNextFontID++; + m_aFonts.emplace( aFont, *xUpdate ); + m_aFontFileToFontID[ aBase ].insert( aFont ); + nFonts++; + SAL_INFO("vcl.fonts.detail", "inserted font " << family << " as fontID " << aFont); + } + } + } + + // how does one get rid of the config ? + SAL_INFO("vcl.fonts", "inserted " << nFonts << " fonts from fontconfig"); +} + +void PrintFontManager::deinitFontconfig() +{ + FontCfgWrapper::release(); +} + +void PrintFontManager::addFontconfigDir( const OString& rDirName ) +{ + const char* pDirName = rDirName.getStr(); + bool bDirOk = (FcConfigAppFontAddDir(FcConfigGetCurrent(), reinterpret_cast<FcChar8 const *>(pDirName) ) == FcTrue); + + SAL_INFO("vcl.fonts", "FcConfigAppFontAddDir( \"" << pDirName << "\") => " << bDirOk); + + if( !bDirOk ) + return; + + // load dir-specific fc-config file too if available + const OString aConfFileName = rDirName + "/fc_local.conf"; + FILE* pCfgFile = fopen( aConfFileName.getStr(), "rb" ); + if( pCfgFile ) + { + fclose( pCfgFile); + bool bCfgOk = FcConfigParseAndLoad(FcConfigGetCurrent(), + reinterpret_cast<FcChar8 const *>(aConfFileName.getStr()), FcTrue); + + SAL_INFO_IF(!bCfgOk, + "vcl.fonts", "FcConfigParseAndLoad( \"" + << aConfFileName << "\") => " << bCfgOk); + } else { + SAL_INFO("vcl.fonts", "cannot open " << aConfFileName); + } +} + +static void addtopattern(FcPattern *pPattern, + FontItalic eItalic, FontWeight eWeight, FontWidth eWidth, FontPitch ePitch) +{ + if( eItalic != ITALIC_DONTKNOW ) + { + int nSlant = FC_SLANT_ROMAN; + switch( eItalic ) + { + case ITALIC_NORMAL: + nSlant = FC_SLANT_ITALIC; + break; + case ITALIC_OBLIQUE: + nSlant = FC_SLANT_OBLIQUE; + break; + default: + break; + } + FcPatternAddInteger(pPattern, FC_SLANT, nSlant); + } + if( eWeight != WEIGHT_DONTKNOW ) + { + int nWeight = FC_WEIGHT_NORMAL; + switch( eWeight ) + { + case WEIGHT_THIN: nWeight = FC_WEIGHT_THIN;break; + case WEIGHT_ULTRALIGHT: nWeight = FC_WEIGHT_ULTRALIGHT;break; + case WEIGHT_LIGHT: nWeight = FC_WEIGHT_LIGHT;break; + case WEIGHT_SEMILIGHT: nWeight = FC_WEIGHT_BOOK;break; + case WEIGHT_NORMAL: nWeight = FC_WEIGHT_NORMAL;break; + case WEIGHT_MEDIUM: nWeight = FC_WEIGHT_MEDIUM;break; + case WEIGHT_SEMIBOLD: nWeight = FC_WEIGHT_SEMIBOLD;break; + case WEIGHT_BOLD: nWeight = FC_WEIGHT_BOLD;break; + case WEIGHT_ULTRABOLD: nWeight = FC_WEIGHT_ULTRABOLD;break; + case WEIGHT_BLACK: nWeight = FC_WEIGHT_BLACK;break; + default: + break; + } + FcPatternAddInteger(pPattern, FC_WEIGHT, nWeight); + } + if( eWidth != WIDTH_DONTKNOW ) + { + int nWidth = FC_WIDTH_NORMAL; + switch( eWidth ) + { + case WIDTH_ULTRA_CONDENSED: nWidth = FC_WIDTH_ULTRACONDENSED;break; + case WIDTH_EXTRA_CONDENSED: nWidth = FC_WIDTH_EXTRACONDENSED;break; + case WIDTH_CONDENSED: nWidth = FC_WIDTH_CONDENSED;break; + case WIDTH_SEMI_CONDENSED: nWidth = FC_WIDTH_SEMICONDENSED;break; + case WIDTH_NORMAL: nWidth = FC_WIDTH_NORMAL;break; + case WIDTH_SEMI_EXPANDED: nWidth = FC_WIDTH_SEMIEXPANDED;break; + case WIDTH_EXPANDED: nWidth = FC_WIDTH_EXPANDED;break; + case WIDTH_EXTRA_EXPANDED: nWidth = FC_WIDTH_EXTRAEXPANDED;break; + case WIDTH_ULTRA_EXPANDED: nWidth = FC_WIDTH_ULTRAEXPANDED;break; + default: + break; + } + FcPatternAddInteger(pPattern, FC_WIDTH, nWidth); + } + if( ePitch == PITCH_DONTKNOW ) + return; + + int nSpacing = FC_PROPORTIONAL; + switch( ePitch ) + { + case PITCH_FIXED: nSpacing = FC_MONO;break; + case PITCH_VARIABLE: nSpacing = FC_PROPORTIONAL;break; + default: + break; + } + FcPatternAddInteger(pPattern, FC_SPACING, nSpacing); + if (nSpacing == FC_MONO) + FcPatternAddString(pPattern, FC_FAMILY, reinterpret_cast<FcChar8 const *>("monospace")); +} + +namespace +{ + //Someday fontconfig will hopefully use bcp47, see fdo#19869 + //In the meantime try something that will fit to workaround fdo#35118 + OString mapToFontConfigLangTag(const LanguageTag &rLangTag) + { +#if defined(FC_VERSION) && (FC_VERSION >= 20492) + std::shared_ptr<FcStrSet> xLangSet(FcGetLangs(), FcStrSetDestroy); + OString sLangAttrib; + + sLangAttrib = OUStringToOString(rLangTag.getBcp47(), RTL_TEXTENCODING_UTF8).toAsciiLowerCase(); + if (FcStrSetMember(xLangSet.get(), reinterpret_cast<const FcChar8*>(sLangAttrib.getStr()))) + { + return sLangAttrib; + } + + sLangAttrib = OUStringToOString(rLangTag.getLanguageAndScript(), RTL_TEXTENCODING_UTF8).toAsciiLowerCase(); + if (FcStrSetMember(xLangSet.get(), reinterpret_cast<const FcChar8*>(sLangAttrib.getStr()))) + { + return sLangAttrib; + } + + OString sLang = OUStringToOString(rLangTag.getLanguage(), RTL_TEXTENCODING_UTF8).toAsciiLowerCase(); + OString sRegion = OUStringToOString(rLangTag.getCountry(), RTL_TEXTENCODING_UTF8).toAsciiLowerCase(); + + if (!sRegion.isEmpty()) + { + sLangAttrib = sLang + "-" + sRegion; + if (FcStrSetMember(xLangSet.get(), reinterpret_cast<const FcChar8*>(sLangAttrib.getStr()))) + { + return sLangAttrib; + } + } + + if (FcStrSetMember(xLangSet.get(), reinterpret_cast<const FcChar8*>(sLang.getStr()))) + { + return sLang; + } + + return OString(); +#else + OString sLangAttrib = OUStringToOString(rLangTag.getLanguageAndScript(), RTL_TEXTENCODING_UTF8).toAsciiLowerCase(); + if (sLangAttrib.equalsIgnoreAsciiCase("pa-in")) + sLangAttrib = "pa"; + return sLangAttrib; +#endif + } + + bool isEmoji(sal_uInt32 nCurrentChar) + { +#if U_ICU_VERSION_MAJOR_NUM >= 57 + return u_hasBinaryProperty(nCurrentChar, UCHAR_EMOJI); +#else + return false; +#endif + } + + //returns true if the given code-point couldn't possibly be in rLangTag. + bool isImpossibleCodePointForLang(const LanguageTag &rLangTag, sal_uInt32 currentChar) + { + //a non-default script is set, lets believe it + if (rLangTag.hasScript()) + return false; + + int32_t script = u_getIntPropertyValue(currentChar, UCHAR_SCRIPT); + UScriptCode eScript = static_cast<UScriptCode>(script); + bool bIsImpossible = false; + OUString sLang = rLangTag.getLanguage(); + switch (eScript) + { + //http://en.wiktionary.org/wiki/Category:Oriya_script_languages + case USCRIPT_ORIYA: + bIsImpossible = + sLang != "or" && + sLang != "kxv"; + break; + //http://en.wiktionary.org/wiki/Category:Telugu_script_languages + case USCRIPT_TELUGU: + bIsImpossible = + sLang != "te" && + sLang != "gon" && + sLang != "kfc"; + break; + //http://en.wiktionary.org/wiki/Category:Bengali_script_languages + case USCRIPT_BENGALI: + bIsImpossible = + sLang != "bn" && + sLang != "as" && + sLang != "bpy" && + sLang != "ctg" && + sLang != "sa"; + break; + default: + break; + } + SAL_WARN_IF(bIsImpossible, "vcl.fonts", "In glyph fallback throwing away the language property of " + << sLang << " because the detected script for '0x" + << OUString::number(currentChar, 16) + << "' is " << uscript_getName(eScript) + << " and that language doesn't make sense. Autodetecting instead."); + return bIsImpossible; + } + + OUString getExemplarLangTagForCodePoint(sal_uInt32 currentChar) + { + if (isEmoji(currentChar)) + return "und-zsye"; + int32_t script = u_getIntPropertyValue(currentChar, UCHAR_SCRIPT); + UScriptCode eScript = static_cast<UScriptCode>(script); + OStringBuffer aBuf(unicode::getExemplarLanguageForUScriptCode(eScript)); + if (const char* pScriptCode = uscript_getShortName(eScript)) + aBuf.append('-').append(pScriptCode); + return OStringToOUString(aBuf, RTL_TEXTENCODING_UTF8); + } +} + +IMPL_LINK_NOARG(PrintFontManager, autoInstallFontLangSupport, Timer *, void) +{ + try + { + using namespace org::freedesktop::PackageKit; + css::uno::Reference<XSyncDbusSessionHelper> xSyncDbusSessionHelper(SyncDbusSessionHelper::create(comphelper::getProcessComponentContext())); + xSyncDbusSessionHelper->InstallFontconfigResources(comphelper::containerToSequence(m_aCurrentRequests), "hide-finished"); + } + catch (const css::uno::Exception&) + { + TOOLS_INFO_EXCEPTION("vcl.fonts", "InstallFontconfigResources problem"); + // Disable this method from now on. It's simply not available on some systems + // and leads to an error dialog being shown each time this is called tdf#104883 + std::shared_ptr<comphelper::ConfigurationChanges> batch( comphelper::ConfigurationChanges::create() ); + officecfg::Office::Common::PackageKit::EnableFontInstallation::set(false, batch); + batch->commit(); + } + + m_aCurrentRequests.clear(); +} + +void PrintFontManager::Substitute(vcl::font::FontSelectPattern &rPattern, OUString& rMissingCodes) +{ + FontCfgWrapper& rWrapper = FontCfgWrapper::get(); + + // build pattern argument for fontconfig query + FcPattern* pPattern = FcPatternCreate(); + + // Prefer scalable fonts + FcPatternAddBool(pPattern, FC_SCALABLE, FcTrue); + + const OString aTargetName = OUStringToOString( rPattern.maTargetName, RTL_TEXTENCODING_UTF8 ); + const FcChar8* pTargetNameUtf8 = reinterpret_cast<FcChar8 const *>(aTargetName.getStr()); + FcPatternAddString(pPattern, FC_FAMILY, pTargetNameUtf8); + + LanguageTag aLangTag(rPattern.meLanguage); + OString aLangAttrib = mapToFontConfigLangTag(aLangTag); + + bool bMissingJustBullet = false; + + // Add required Unicode characters, if any + if ( !rMissingCodes.isEmpty() ) + { + FcCharSet *codePoints = FcCharSetCreate(); + bMissingJustBullet = rMissingCodes.getLength() == 1 && rMissingCodes[0] == 0xb7; + for( sal_Int32 nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); ) + { + // also handle unicode surrogates + const sal_uInt32 nCode = rMissingCodes.iterateCodePoints( &nStrIndex ); + FcCharSetAddChar( codePoints, nCode ); + //if the codepoint is impossible for this lang tag, then clear it + //and autodetect something useful + if (!aLangAttrib.isEmpty() && (isImpossibleCodePointForLang(aLangTag, nCode) || isEmoji(nCode))) + aLangAttrib.clear(); + //#i105784#/rhbz#527719 improve selection of fallback font + if (aLangAttrib.isEmpty()) + { + aLangTag.reset(getExemplarLangTagForCodePoint(nCode)); + aLangAttrib = mapToFontConfigLangTag(aLangTag); + } + } + FcPatternAddCharSet(pPattern, FC_CHARSET, codePoints); + FcCharSetDestroy(codePoints); + } + + if (!aLangAttrib.isEmpty()) + FcPatternAddString(pPattern, FC_LANG, reinterpret_cast<FcChar8 const *>(aLangAttrib.getStr())); + + addtopattern(pPattern, rPattern.GetItalic(), rPattern.GetWeight(), + rPattern.GetWidthType(), rPattern.GetPitch()); + + // query fontconfig for a substitute + FcConfigSubstitute(FcConfigGetCurrent(), pPattern, FcMatchPattern); + FcDefaultSubstitute(pPattern); + + // process the result of the fontconfig query + FcResult eResult = FcResultNoMatch; + FcFontSet* pFontSet = rWrapper.getFontSet(); + FcPattern* pResult = FcFontSetMatch(FcConfigGetCurrent(), &pFontSet, 1, pPattern, &eResult); + FcPatternDestroy( pPattern ); + + FcFontSet* pSet = nullptr; + if( pResult ) + { + pSet = FcFontSetCreate(); + // info: destroying the pSet destroys pResult implicitly + // since pResult was "added" to pSet + FcFontSetAdd( pSet, pResult ); + } + + if( pSet ) + { + if( pSet->nfont > 0 ) + { + bool bRet = false; + + //extract the closest match + FcChar8* file = nullptr; + FcResult eFileRes = FcPatternGetString(pSet->fonts[0], FC_FILE, 0, &file); + int nEntryId = 0; + FcResult eIndexRes = FcPatternGetInteger(pSet->fonts[0], FC_INDEX, 0, &nEntryId); + if (eIndexRes != FcResultMatch) + nEntryId = 0; + if( eFileRes == FcResultMatch ) + { + OString aDir, aBase, aOrgPath( reinterpret_cast<char*>(file) ); + splitPath( aOrgPath, aDir, aBase ); + int nDirID = getDirectoryAtom( aDir ); + fontID aFont = findFontFileID(nDirID, aBase, GetCollectionIndex(nEntryId), GetVariationIndex(nEntryId)); + if( aFont > 0 ) + { + FastPrintFontInfo aInfo; + bRet = getFontFastInfo( aFont, aInfo ); + rPattern.maSearchName = aInfo.m_aFamilyName; + } + } + + SAL_WARN_IF(!bRet, "vcl.fonts", "no FC_FILE found, falling back to name search"); + + if (!bRet) + { + FcChar8* family = nullptr; + FcResult eFamilyRes = FcPatternGetString( pSet->fonts[0], FC_FAMILY, 0, &family ); + + // get the family name + if( eFamilyRes == FcResultMatch ) + { + OString sFamily(reinterpret_cast<char*>(family)); + std::unordered_map< OString, OString >::const_iterator aI = + rWrapper.m_aFontNameToLocalized.find(sFamily); + if (aI != rWrapper.m_aFontNameToLocalized.end()) + sFamily = aI->second; + rPattern.maSearchName = OStringToOUString( sFamily, RTL_TEXTENCODING_UTF8 ); + bRet = true; + } + } + + if (bRet) + { + int val = 0; + if (FcResultMatch == FcPatternGetInteger(pSet->fonts[0], FC_WEIGHT, 0, &val)) + rPattern.SetWeight( convertWeight(val) ); + if (FcResultMatch == FcPatternGetInteger(pSet->fonts[0], FC_SLANT, 0, &val)) + rPattern.SetItalic( convertSlant(val) ); + if (FcResultMatch == FcPatternGetInteger(pSet->fonts[0], FC_SPACING, 0, &val)) + rPattern.SetPitch ( convertSpacing(val) ); + if (FcResultMatch == FcPatternGetInteger(pSet->fonts[0], FC_WIDTH, 0, &val)) + rPattern.SetWidthType ( convertWidth(val) ); + FcBool bEmbolden; + if (FcResultMatch == FcPatternGetBool(pSet->fonts[0], FC_EMBOLDEN, 0, &bEmbolden)) + rPattern.mbEmbolden = bEmbolden; + FcMatrix *pMatrix = nullptr; + if (FcResultMatch == FcPatternGetMatrix(pSet->fonts[0], FC_MATRIX, 0, &pMatrix)) + { + rPattern.maItalicMatrix.xx = pMatrix->xx; + rPattern.maItalicMatrix.xy = pMatrix->xy; + rPattern.maItalicMatrix.yx = pMatrix->yx; + rPattern.maItalicMatrix.yy = pMatrix->yy; + } + } + + // update rMissingCodes by removing resolved code points + if( !rMissingCodes.isEmpty() ) + { + std::unique_ptr<sal_uInt32[]> const pRemainingCodes(new sal_uInt32[rMissingCodes.getLength()]); + int nRemainingLen = 0; + FcCharSet* codePoints; + if (!FcPatternGetCharSet(pSet->fonts[0], FC_CHARSET, 0, &codePoints)) + { + for( sal_Int32 nStrIndex = 0; nStrIndex < rMissingCodes.getLength(); ) + { + // also handle surrogates + const sal_uInt32 nCode = rMissingCodes.iterateCodePoints( &nStrIndex ); + if (FcCharSetHasChar(codePoints, nCode) != FcTrue) + pRemainingCodes[ nRemainingLen++ ] = nCode; + } + } + OUString sStillMissing(pRemainingCodes.get(), nRemainingLen); + if (!Application::IsHeadlessModeEnabled() && officecfg::Office::Common::PackageKit::EnableFontInstallation::get()) + { + if (sStillMissing == rMissingCodes) //replaced nothing + { + //It'd be better if we could ask packagekit using the + //missing codepoints or some such rather than using + //"language" as a proxy to how fontconfig considers + //scripts to default to a given language. + for (sal_Int32 i = 0; i < nRemainingLen; ++i) + { + LanguageTag aOurTag(getExemplarLangTagForCodePoint(pRemainingCodes[i])); + OString sTag = OUStringToOString(aOurTag.getBcp47(), RTL_TEXTENCODING_UTF8); + if (!m_aPreviousLangSupportRequests.insert(sTag).second) + continue; + sTag = mapToFontConfigLangTag(aOurTag); + if (!sTag.isEmpty() && m_aPreviousLangSupportRequests.find(sTag) == m_aPreviousLangSupportRequests.end()) + { + OString sReq = OString::Concat(":lang=") + sTag; + m_aCurrentRequests.push_back(OUString::fromUtf8(sReq)); + m_aPreviousLangSupportRequests.insert(sTag); + } + } + } + if (!m_aCurrentRequests.empty()) + m_aFontInstallerTimer.Start(); + } + rMissingCodes = sStillMissing; + } + } + + FcFontSetDestroy( pSet ); + } + + SAL_INFO("vcl.fonts", "PrintFontManager::Substitute: replacing missing font: '" + << rPattern.maTargetName << "' with '" << rPattern.maSearchName + << "'"); + + static bool bAbortOnFontSubstitute = getenv("SAL_ABORT_ON_NON_APPLICATION_FONT_USE") != nullptr; + if (bAbortOnFontSubstitute && rPattern.maTargetName != rPattern.maSearchName) + { + if (bMissingJustBullet) + { + assert(rPattern.maTargetName == "Amiri Quran" || rPattern.maTargetName == "David CLM" || + rPattern.maTargetName == "EmojiOne Color" || rPattern.maTargetName == "Frank Ruehl CLM" || + rPattern.maTargetName == "KacstBook" || rPattern.maTargetName == "KacstOffice"); + // These fonts exist in "more_fonts", but have no U+00B7 MIDDLE DOT + // so will always glyph fallback on measuring mnBulletOffset in + // ImplFontMetricData::ImplInitTextLineSize + return; + } + if (rPattern.maTargetName == "Linux Libertine G" && rPattern.maSearchName == "Linux Libertine O") + return; + SAL_WARN("vcl.fonts", "PrintFontManager::Substitute: missing font: '" << rPattern.maTargetName << + "' try: " << rPattern.maSearchName << " instead"); + std::abort(); + } +} + +FontConfigFontOptions::~FontConfigFontOptions() +{ + FcPatternDestroy(mpPattern); +} + +FcPattern *FontConfigFontOptions::GetPattern() const +{ + return mpPattern; +} + +void FontConfigFontOptions::SyncPattern(const OString& rFileName, sal_uInt32 nIndex, sal_uInt32 nVariation, bool bEmbolden) +{ + FcPatternDel(mpPattern, FC_FILE); + FcPatternAddString(mpPattern, FC_FILE, reinterpret_cast<FcChar8 const *>(rFileName.getStr())); + FcPatternDel(mpPattern, FC_INDEX); + sal_uInt32 nFcIndex = (nVariation << 16) | nIndex; + FcPatternAddInteger(mpPattern, FC_INDEX, nFcIndex); + FcPatternDel(mpPattern, FC_EMBOLDEN); + FcPatternAddBool(mpPattern, FC_EMBOLDEN, bEmbolden ? FcTrue : FcFalse); +} + +std::unique_ptr<FontConfigFontOptions> PrintFontManager::getFontOptions(const FontAttributes& rInfo, int nSize) +{ + FontOptionsKey aKey{ rInfo.GetFamilyName(), nSize, rInfo.GetItalic(), + rInfo.GetWeight(), rInfo.GetWidthType(), rInfo.GetPitch() }; + + FontCfgWrapper& rWrapper = FontCfgWrapper::get(); + + std::unique_ptr<FontConfigFontOptions> pOptions = rWrapper.m_aCachedFontOptions.lookup(aKey); + if (pOptions) + return pOptions; + + FcConfig* pConfig = FcConfigGetCurrent(); + FcPattern* pPattern = FcPatternCreate(); + + OString sFamily = OUStringToOString(aKey.m_sFamilyName, RTL_TEXTENCODING_UTF8); + + std::unordered_map< OString, OString >::const_iterator aI = rWrapper.m_aLocalizedToCanonical.find(sFamily); + if (aI != rWrapper.m_aLocalizedToCanonical.end()) + sFamily = aI->second; + if( !sFamily.isEmpty() ) + FcPatternAddString(pPattern, FC_FAMILY, reinterpret_cast<FcChar8 const *>(sFamily.getStr())); + + addtopattern(pPattern, aKey.m_eItalic, aKey.m_eWeight, aKey.m_eWidth, aKey.m_ePitch); + FcPatternAddDouble(pPattern, FC_PIXEL_SIZE, nSize); + + FcConfigSubstitute(pConfig, pPattern, FcMatchPattern); + FontConfigFontOptions::cairo_font_options_substitute(pPattern); + FcDefaultSubstitute(pPattern); + + FcResult eResult = FcResultNoMatch; + FcFontSet* pFontSet = rWrapper.getFontSet(); + if (FcPattern* pResult = FcFontSetMatch(pConfig, &pFontSet, 1, pPattern, &eResult)) + { + rWrapper.m_aCachedFontOptions.cache(aKey, pResult); + pOptions.reset(new FontConfigFontOptions(pResult)); + } + + // cleanup + FcPatternDestroy( pPattern ); + + return pOptions; +} + + +void PrintFontManager::matchFont( FastPrintFontInfo& rInfo, const css::lang::Locale& rLocale ) +{ + FontCfgWrapper& rWrapper = FontCfgWrapper::get(); + + FcConfig* pConfig = FcConfigGetCurrent(); + FcPattern* pPattern = FcPatternCreate(); + + // populate pattern with font characteristics + const LanguageTag aLangTag(rLocale); + const OString aLangAttrib = mapToFontConfigLangTag(aLangTag); + if (!aLangAttrib.isEmpty()) + FcPatternAddString(pPattern, FC_LANG, reinterpret_cast<FcChar8 const *>(aLangAttrib.getStr())); + + OString aFamily = OUStringToOString( rInfo.m_aFamilyName, RTL_TEXTENCODING_UTF8 ); + if( !aFamily.isEmpty() ) + FcPatternAddString(pPattern, FC_FAMILY, reinterpret_cast<FcChar8 const *>(aFamily.getStr())); + + addtopattern(pPattern, rInfo.m_eItalic, rInfo.m_eWeight, rInfo.m_eWidth, rInfo.m_ePitch); + + FcConfigSubstitute(pConfig, pPattern, FcMatchPattern); + FcDefaultSubstitute(pPattern); + FcResult eResult = FcResultNoMatch; + FcFontSet *pFontSet = rWrapper.getFontSet(); + FcPattern* pResult = FcFontSetMatch(pConfig, &pFontSet, 1, pPattern, &eResult); + if( pResult ) + { + FcFontSet* pSet = FcFontSetCreate(); + FcFontSetAdd( pSet, pResult ); + if( pSet->nfont > 0 ) + { + //extract the closest match + FcChar8* file = nullptr; + FcResult eFileRes = FcPatternGetString(pSet->fonts[0], FC_FILE, 0, &file); + int nEntryId = 0; + FcResult eIndexRes = FcPatternGetInteger(pSet->fonts[0], FC_INDEX, 0, &nEntryId); + if (eIndexRes != FcResultMatch) + nEntryId = 0; + if( eFileRes == FcResultMatch ) + { + OString aDir, aBase, aOrgPath( reinterpret_cast<char*>(file) ); + splitPath( aOrgPath, aDir, aBase ); + int nDirID = getDirectoryAtom( aDir ); + fontID aFont = findFontFileID(nDirID, aBase, + GetCollectionIndex(nEntryId), + GetVariationIndex(nEntryId)); + if( aFont > 0 ) + getFontFastInfo( aFont, rInfo ); + } + } + // info: destroying the pSet destroys pResult implicitly + // since pResult was "added" to pSet + FcFontSetDestroy( pSet ); + } + + // cleanup + FcPatternDestroy( pPattern ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |