/**************************************************************************** ** ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/ ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** GNU Lesser General Public License Usage ** This file may be used under the terms of the GNU Lesser General Public ** License version 2.1 as published by the Free Software Foundation and ** appearing in the file LICENSE.LGPL included in the packaging of this ** file. Please review the following information to ensure the GNU Lesser ** General Public License version 2.1 requirements will be met: ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain additional ** rights. These rights are described in the Nokia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU General ** Public License version 3.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of this ** file. Please review the following information to ensure the GNU General ** Public License version 3.0 requirements will be met: ** http://www.gnu.org/copyleft/gpl.html. ** ** Other Usage ** Alternatively, this file may be used in accordance with the terms and ** conditions contained in a signed written agreement between you and Nokia. ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qfontdatabase.h" #include "qdebug.h" #include "qalgorithms.h" #include "qguiapplication.h" #include "qvarlengtharray.h" // here or earlier - workaround for VC++6 #include "qthread.h" #include "qmutex.h" #include "qfile.h" #include "qfileinfo.h" #include "private/qunicodetables_p.h" #include "qfontengine_p.h" #include #include #include #include #include // #define QFONTDATABASE_DEBUG #ifdef QFONTDATABASE_DEBUG # define FD_DEBUG qDebug #else # define FD_DEBUG if (false) qDebug #endif // #define FONT_MATCH_DEBUG #ifdef FONT_MATCH_DEBUG # define FM_DEBUG qDebug #else # define FM_DEBUG if (false) qDebug #endif QT_BEGIN_NAMESPACE #define SMOOTH_SCALABLE 0xffff bool qt_enable_test_font = false; Q_AUTOTEST_EXPORT void qt_setQtEnableTestFont(bool value) { qt_enable_test_font = value; } static int getFontWeight(const QString &weightString) { QString s = weightString.toLower(); // Test in decreasing order of commonness if (s == QLatin1String("medium") || s == QLatin1String("normal") || s.compare(QCoreApplication::translate("QFontDatabase", "Normal"), Qt::CaseInsensitive) == 0) return QFont::Normal; if (s == QLatin1String("bold") || s.compare(QCoreApplication::translate("QFontDatabase", "Bold"), Qt::CaseInsensitive) == 0) return QFont::Bold; if (s == QLatin1String("demibold") || s == QLatin1String("demi bold") || s.compare(QCoreApplication::translate("QFontDatabase", "Demi Bold"), Qt::CaseInsensitive) == 0) return QFont::DemiBold; if (s == QLatin1String("black") || s.compare(QCoreApplication::translate("QFontDatabase", "Black"), Qt::CaseInsensitive) == 0) return QFont::Black; if (s == QLatin1String("light")) return QFont::Light; if (s.contains(QLatin1String("bold")) || s.contains(QCoreApplication::translate("QFontDatabase", "Bold"), Qt::CaseInsensitive)) { if (s.contains(QLatin1String("demi")) || s.compare(QCoreApplication::translate("QFontDatabase", "Demi"), Qt::CaseInsensitive) == 0) return (int) QFont::DemiBold; return (int) QFont::Bold; } if (s.contains(QLatin1String("light")) || s.compare(QCoreApplication::translate("QFontDatabase", "Light"), Qt::CaseInsensitive) == 0) return (int) QFont::Light; if (s.contains(QLatin1String("black")) || s.compare(QCoreApplication::translate("QFontDatabase", "Black"), Qt::CaseInsensitive) == 0) return (int) QFont::Black; return (int) QFont::Normal; } // convert 0 ~ 1000 integer to QFont::Weight QFont::Weight weightFromInteger(int weight) { if (weight < 400) return QFont::Light; else if (weight < 600) return QFont::Normal; else if (weight < 700) return QFont::DemiBold; else if (weight < 800) return QFont::Bold; else return QFont::Black; } struct QtFontEncoding { signed int encoding : 16; uint xpoint : 16; uint xres : 8; uint yres : 8; uint avgwidth : 16; uchar pitch : 8; }; struct QtFontSize { void *handle; unsigned short pixelSize : 16; }; struct QtFontStyle { struct Key { Key(const QString &styleString); Key() : style(QFont::StyleNormal), weight(QFont::Normal), stretch(0) { } Key(const Key &o) : style(o.style), weight(o.weight), stretch(o.stretch) { } uint style : 2; signed int weight : 8; signed int stretch : 12; bool operator==(const Key & other) { return (style == other.style && weight == other.weight && (stretch == 0 || other.stretch == 0 || stretch == other.stretch)); } bool operator!=(const Key &other) { return !operator==(other); } bool operator <(const Key &o) { int x = (style << 12) + (weight << 14) + stretch; int y = (o.style << 12) + (o.weight << 14) + o.stretch; return (x < y); } }; QtFontStyle(const Key &k) : key(k), bitmapScalable(false), smoothScalable(false), count(0), pixelSizes(0) { } ~QtFontStyle() { while (count) { // bitfield count-- in while condition does not work correctly in mwccsym2 count--; QPlatformIntegration *integration = QGuiApplicationPrivate::platformIntegration(); if (integration) { integration->fontDatabase()->releaseHandle(pixelSizes[count].handle); } } free(pixelSizes); } Key key; bool bitmapScalable : 1; bool smoothScalable : 1; signed int count : 30; QtFontSize *pixelSizes; QString styleName; bool antialiased; QtFontSize *pixelSize(unsigned short size, bool = false); }; QtFontStyle::Key::Key(const QString &styleString) : style(QFont::StyleNormal), weight(QFont::Normal), stretch(0) { weight = getFontWeight(styleString); if (styleString.contains(QLatin1String("Italic")) || styleString.contains(QCoreApplication::translate("QFontDatabase", "Italic"))) style = QFont::StyleItalic; else if (styleString.contains(QLatin1String("Oblique")) || styleString.contains(QCoreApplication::translate("QFontDatabase", "Oblique"))) style = QFont::StyleOblique; } QtFontSize *QtFontStyle::pixelSize(unsigned short size, bool add) { for (int i = 0; i < count; i++) { if (pixelSizes[i].pixelSize == size) return pixelSizes + i; } if (!add) return 0; if (!pixelSizes) { // Most style have only one font size, we avoid waisting memory QtFontSize *newPixelSizes = (QtFontSize *)malloc(sizeof(QtFontSize)); Q_CHECK_PTR(newPixelSizes); pixelSizes = newPixelSizes; } else if (!(count % 8) || count == 1) { QtFontSize *newPixelSizes = (QtFontSize *) realloc(pixelSizes, (((count+8) >> 3) << 3) * sizeof(QtFontSize)); Q_CHECK_PTR(newPixelSizes); pixelSizes = newPixelSizes; } pixelSizes[count].pixelSize = size; pixelSizes[count].handle = 0; return pixelSizes + (count++); } struct QtFontFoundry { QtFontFoundry(const QString &n) : name(n), count(0), styles(0) {} ~QtFontFoundry() { while (count--) delete styles[count]; free(styles); } QString name; int count; QtFontStyle **styles; QtFontStyle *style(const QtFontStyle::Key &, const QString & = QString(), bool = false); }; QtFontStyle *QtFontFoundry::style(const QtFontStyle::Key &key, const QString &styleName, bool create) { int pos = 0; if (count) { // if styleName for searching first if possible if (!styleName.isEmpty()) { for (; pos < count; pos++) { if (styles[pos]->styleName == styleName) return styles[pos]; } } int low = 0; int high = count; pos = count / 2; while (high > low) { if (styles[pos]->key == key) return styles[pos]; if (styles[pos]->key < key) low = pos + 1; else high = pos; pos = (high + low) / 2; } pos = low; } if (!create) return 0; // qDebug("adding key (weight=%d, style=%d, oblique=%d stretch=%d) at %d", key.weight, key.style, key.oblique, key.stretch, pos); if (!(count % 8)) { QtFontStyle **newStyles = (QtFontStyle **) realloc(styles, (((count+8) >> 3) << 3) * sizeof(QtFontStyle *)); Q_CHECK_PTR(newStyles); styles = newStyles; } QtFontStyle *style = new QtFontStyle(key); style->styleName = styleName; memmove(styles + pos + 1, styles + pos, (count-pos)*sizeof(QtFontStyle *)); styles[pos] = style; count++; return styles[pos]; } struct QtFontFamily { enum WritingSystemStatus { Unknown = 0, Supported = 1, UnsupportedFT = 2, Unsupported = UnsupportedFT }; QtFontFamily(const QString &n) : fixedPitch(false), #if !defined(QWS) && defined(Q_OS_MAC) fixedPitchComputed(false), #endif name(n), count(0), foundries(0) , bogusWritingSystems(false) , askedForFallback(false) { memset(writingSystems, 0, sizeof(writingSystems)); } ~QtFontFamily() { while (count--) delete foundries[count]; free(foundries); } bool fixedPitch : 1; #if !defined(QWS) && defined(Q_OS_MAC) bool fixedPitchComputed : 1; #endif QString name; QStringList aliases; int count; QtFontFoundry **foundries; bool bogusWritingSystems; QStringList fallbackFamilies; bool askedForFallback; unsigned char writingSystems[QFontDatabase::WritingSystemsCount]; QtFontFoundry *foundry(const QString &f, bool = false); }; #if !defined(QWS) && defined(Q_OS_MAC) inline static void qt_mac_get_fixed_pitch(QtFontFamily *f) { if(f && !f->fixedPitchComputed) { QFontMetrics fm(f->name); f->fixedPitch = fm.width(QLatin1Char('i')) == fm.width(QLatin1Char('m')); f->fixedPitchComputed = true; } } #endif QtFontFoundry *QtFontFamily::foundry(const QString &f, bool create) { if (f.isNull() && count == 1) return foundries[0]; for (int i = 0; i < count; i++) { if (foundries[i]->name.compare(f, Qt::CaseInsensitive) == 0) return foundries[i]; } if (!create) return 0; if (!(count % 8)) { QtFontFoundry **newFoundries = (QtFontFoundry **) realloc(foundries, (((count+8) >> 3) << 3) * sizeof(QtFontFoundry *)); Q_CHECK_PTR(newFoundries); foundries = newFoundries; } foundries[count] = new QtFontFoundry(f); return foundries[count++]; } // ### copied to tools/makeqpf/qpf2.cpp // see the Unicode subset bitfields in the MSDN docs static int requiredUnicodeBits[QFontDatabase::WritingSystemsCount][2] = { // Any, { 127, 127 }, // Latin, { 0, 127 }, // Greek, { 7, 127 }, // Cyrillic, { 9, 127 }, // Armenian, { 10, 127 }, // Hebrew, { 11, 127 }, // Arabic, { 13, 127 }, // Syriac, { 71, 127 }, //Thaana, { 72, 127 }, //Devanagari, { 15, 127 }, //Bengali, { 16, 127 }, //Gurmukhi, { 17, 127 }, //Gujarati, { 18, 127 }, //Oriya, { 19, 127 }, //Tamil, { 20, 127 }, //Telugu, { 21, 127 }, //Kannada, { 22, 127 }, //Malayalam, { 23, 127 }, //Sinhala, { 73, 127 }, //Thai, { 24, 127 }, //Lao, { 25, 127 }, //Tibetan, { 70, 127 }, //Myanmar, { 74, 127 }, // Georgian, { 26, 127 }, // Khmer, { 80, 127 }, // SimplifiedChinese, { 126, 127 }, // TraditionalChinese, { 126, 127 }, // Japanese, { 126, 127 }, // Korean, { 56, 127 }, // Vietnamese, { 0, 127 }, // same as latin1 // Other, { 126, 127 }, // Ogham, { 78, 127 }, // Runic, { 79, 127 }, // Nko, { 14, 127 }, }; #define SimplifiedChineseCsbBit 18 #define TraditionalChineseCsbBit 20 #define JapaneseCsbBit 17 #define KoreanCsbBit 21 QList qt_determine_writing_systems_from_truetype_bits(quint32 unicodeRange[4], quint32 codePageRange[2]) { QList writingSystems; bool hasScript = false; int i; for(i = 0; i < QFontDatabase::WritingSystemsCount; i++) { int bit = requiredUnicodeBits[i][0]; int index = bit/32; int flag = 1 << (bit&31); if (bit != 126 && unicodeRange[index] & flag) { bit = requiredUnicodeBits[i][1]; index = bit/32; flag = 1 << (bit&31); if (bit == 127 || unicodeRange[index] & flag) { writingSystems.append(QFontDatabase::WritingSystem(i)); hasScript = true; // qDebug("font %s: index=%d, flag=%8x supports script %d", familyName.latin1(), index, flag, i); } } } if(codePageRange[0] & (1 << SimplifiedChineseCsbBit)) { writingSystems.append(QFontDatabase::SimplifiedChinese); hasScript = true; //qDebug("font %s supports Simplified Chinese", familyName.latin1()); } if(codePageRange[0] & (1 << TraditionalChineseCsbBit)) { writingSystems.append(QFontDatabase::TraditionalChinese); hasScript = true; //qDebug("font %s supports Traditional Chinese", familyName.latin1()); } if(codePageRange[0] & (1 << JapaneseCsbBit)) { writingSystems.append(QFontDatabase::Japanese); hasScript = true; //qDebug("font %s supports Japanese", familyName.latin1()); } if(codePageRange[0] & (1 << KoreanCsbBit)) { writingSystems.append(QFontDatabase::Korean); hasScript = true; //qDebug("font %s supports Korean", familyName.latin1()); } if (!hasScript) writingSystems.append(QFontDatabase::Symbol); return writingSystems; } class QFontDatabasePrivate { public: QFontDatabasePrivate() : count(0), families(0), reregisterAppFonts(false) { } ~QFontDatabasePrivate() { free(); } QtFontFamily *family(const QString &f, bool = false); void free() { while (count--) delete families[count]; ::free(families); families = 0; count = 0; // don't clear the memory fonts! } int count; QtFontFamily **families; struct ApplicationFont { QString fileName; QByteArray data; QStringList families; }; QVector applicationFonts; int addAppFont(const QByteArray &fontData, const QString &fileName); bool reregisterAppFonts; bool isApplicationFont(const QString &fileName); void invalidate(); QStringList fallbackFamilies; }; void QFontDatabasePrivate::invalidate() { QFontCache::instance()->clear(); free(); emit static_cast(QCoreApplication::instance())->fontDatabaseChanged(); } QtFontFamily *QFontDatabasePrivate::family(const QString &f, bool create) { int low = 0; int high = count; int pos = count / 2; int res = 1; if (count) { while ((res = families[pos]->name.compare(f, Qt::CaseInsensitive)) && pos != low) { if (res > 0) high = pos; else low = pos; pos = (high + low) / 2; } if (!res) return families[pos]; } if (!create) return 0; if (res < 0) pos++; // qDebug("adding family %s at %d total=%d", f.latin1(), pos, count); if (!(count % 8)) { QtFontFamily **newFamilies = (QtFontFamily **) realloc(families, (((count+8) >> 3) << 3) * sizeof(QtFontFamily *)); Q_CHECK_PTR(newFamilies); families = newFamilies; } QtFontFamily *family = new QtFontFamily(f); memmove(families + pos + 1, families + pos, (count-pos)*sizeof(QtFontFamily *)); families[pos] = family; count++; return families[pos]; } static const int scriptForWritingSystem[] = { QUnicodeTables::Common, // Any QUnicodeTables::Latin, // Latin QUnicodeTables::Greek, // Greek QUnicodeTables::Cyrillic, // Cyrillic QUnicodeTables::Armenian, // Armenian QUnicodeTables::Hebrew, // Hebrew QUnicodeTables::Arabic, // Arabic QUnicodeTables::Syriac, // Syriac QUnicodeTables::Thaana, // Thaana QUnicodeTables::Devanagari, // Devanagari QUnicodeTables::Bengali, // Bengali QUnicodeTables::Gurmukhi, // Gurmukhi QUnicodeTables::Gujarati, // Gujarati QUnicodeTables::Oriya, // Oriya QUnicodeTables::Tamil, // Tamil QUnicodeTables::Telugu, // Telugu QUnicodeTables::Kannada, // Kannada QUnicodeTables::Malayalam, // Malayalam QUnicodeTables::Sinhala, // Sinhala QUnicodeTables::Thai, // Thai QUnicodeTables::Lao, // Lao QUnicodeTables::Tibetan, // Tibetan QUnicodeTables::Myanmar, // Myanmar QUnicodeTables::Georgian, // Georgian QUnicodeTables::Khmer, // Khmer QUnicodeTables::Common, // SimplifiedChinese QUnicodeTables::Common, // TraditionalChinese QUnicodeTables::Common, // Japanese QUnicodeTables::Hangul, // Korean QUnicodeTables::Common, // Vietnamese QUnicodeTables::Common, // Yi QUnicodeTables::Common, // Tagalog QUnicodeTables::Common, // Hanunoo QUnicodeTables::Common, // Buhid QUnicodeTables::Common, // Tagbanwa QUnicodeTables::Common, // Limbu QUnicodeTables::Common, // TaiLe QUnicodeTables::Common, // Braille QUnicodeTables::Common, // Symbol QUnicodeTables::Ogham, // Ogham QUnicodeTables::Runic, // Runic QUnicodeTables::Nko // Nko }; int qt_script_for_writing_system(QFontDatabase::WritingSystem writingSystem) { return scriptForWritingSystem[writingSystem]; } /*! \internal This makes sense of the font family name: if the family name contains a '[' and a ']', then we take the text between the square brackets as the foundry, and the text before the square brackets as the family (ie. "Arial [Monotype]") */ static void parseFontName(const QString &name, QString &foundry, QString &family) { int i = name.indexOf(QLatin1Char('[')); int li = name.lastIndexOf(QLatin1Char(']')); if (i >= 0 && li >= 0 && i < li) { foundry = name.mid(i + 1, li - i - 1); if (i > 0 && name[i - 1] == QLatin1Char(' ')) i--; family = name.left(i); } else { foundry.clear(); family = name; } // capitalize the family/foundry names bool space = true; QChar *s = family.data(); int len = family.length(); while(len--) { if (space) *s = s->toUpper(); space = s->isSpace(); ++s; } space = true; s = foundry.data(); len = foundry.length(); while(len--) { if (space) *s = s->toUpper(); space = s->isSpace(); ++s; } } struct QtFontDesc { inline QtFontDesc() : family(0), foundry(0), style(0), size(0), encoding(0), familyIndex(-1) {} QtFontFamily *family; QtFontFoundry *foundry; QtFontStyle *style; QtFontSize *size; QtFontEncoding *encoding; int familyIndex; }; static void match(int script, const QFontDef &request, const QString &family_name, const QString &foundry_name, int force_encoding_id, QtFontDesc *desc, const QList &blacklistedFamilies = QList()); static void initFontDef(const QtFontDesc &desc, const QFontDef &request, QFontDef *fontDef, bool multi) { fontDef->family = desc.family->name; if (! desc.foundry->name.isEmpty() && desc.family->count > 1) { fontDef->family += QString::fromLatin1(" ["); fontDef->family += desc.foundry->name; fontDef->family += QLatin1Char(']'); } if (desc.style->smoothScalable || QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable() || (desc.style->bitmapScalable && (request.styleStrategy & QFont::PreferMatch))) { fontDef->pixelSize = request.pixelSize; } else { fontDef->pixelSize = desc.size->pixelSize; } fontDef->styleHint = request.styleHint; fontDef->styleStrategy = request.styleStrategy; if (!multi) fontDef->weight = desc.style->key.weight; if (!multi) fontDef->style = desc.style->key.style; fontDef->fixedPitch = desc.family->fixedPitch; fontDef->stretch = desc.style->key.stretch; fontDef->ignorePitch = false; } static void getEngineData(const QFontPrivate *d, const QFontDef &def) { // look for the requested font in the engine data cache d->engineData = QFontCache::instance()->findEngineData(def); if (!d->engineData) { // create a new one d->engineData = new QFontEngineData; QFontCache::instance()->insertEngineData(def, d->engineData); } else { d->engineData->ref.ref(); } } static QStringList familyList(const QFontDef &req) { // list of families to try QStringList family_list; if (req.family.isEmpty()) return family_list; QStringList list = req.family.split(QLatin1Char(',')); for (int i = 0; i < list.size(); ++i) { QString str = list.at(i).trimmed(); if ((str.startsWith(QLatin1Char('"')) && str.endsWith(QLatin1Char('"'))) || (str.startsWith(QLatin1Char('\'')) && str.endsWith(QLatin1Char('\'')))) str = str.mid(1, str.length() - 2); family_list << str; } // append the substitute list for each family in family_list QStringList subs_list; QStringList::ConstIterator it = family_list.constBegin(), end = family_list.constEnd(); for (; it != end; ++it) subs_list += QFont::substitutes(*it); // qDebug() << "adding substs: " << subs_list; family_list += subs_list; return family_list; } Q_GLOBAL_STATIC(QFontDatabasePrivate, privateDb) Q_GLOBAL_STATIC_WITH_ARGS(QMutex, fontDatabaseMutex, (QMutex::Recursive)) // used in qguiapplication.cpp void qt_cleanupFontDatabase() { QFontDatabasePrivate *db = privateDb(); if (db) db->free(); } // used in qfontengine_x11.cpp QMutex *qt_fontdatabase_mutex() { return fontDatabaseMutex(); } QT_BEGIN_INCLUDE_NAMESPACE # include "qfontdatabase_qpa.cpp" QT_END_INCLUDE_NAMESPACE static QtFontStyle *bestStyle(QtFontFoundry *foundry, const QtFontStyle::Key &styleKey, const QString &styleName = QString()) { int best = 0; int dist = 0xffff; for ( int i = 0; i < foundry->count; i++ ) { QtFontStyle *style = foundry->styles[i]; if (!styleName.isEmpty() && styleName == style->styleName) { dist = 0; best = i; break; } int d = qAbs( styleKey.weight - style->key.weight ); if ( styleKey.stretch != 0 && style->key.stretch != 0 ) { d += qAbs( styleKey.stretch - style->key.stretch ); } if (styleKey.style != style->key.style) { if (styleKey.style != QFont::StyleNormal && style->key.style != QFont::StyleNormal) // one is italic, the other oblique d += 0x0001; else d += 0x1000; } if ( d < dist ) { best = i; dist = d; } } FM_DEBUG( " best style has distance 0x%x", dist ); return foundry->styles[best]; } static unsigned int bestFoundry(int script, unsigned int score, int styleStrategy, const QtFontFamily *family, const QString &foundry_name, QtFontStyle::Key styleKey, int pixelSize, char pitch, QtFontDesc *desc, int force_encoding_id) { Q_UNUSED(force_encoding_id); Q_UNUSED(script); Q_UNUSED(pitch); desc->foundry = 0; desc->style = 0; desc->size = 0; desc->encoding = 0; FM_DEBUG(" REMARK: looking for best foundry for family '%s' [%d]", family->name.toLatin1().constData(), family->count); for (int x = 0; x < family->count; ++x) { QtFontFoundry *foundry = family->foundries[x]; if (!foundry_name.isEmpty() && foundry->name.compare(foundry_name, Qt::CaseInsensitive) != 0) continue; FM_DEBUG(" looking for matching style in foundry '%s' %d", foundry->name.isEmpty() ? "-- none --" : foundry->name.toLatin1().constData(), foundry->count); QtFontStyle *style = bestStyle(foundry, styleKey); if (!style->smoothScalable && (styleStrategy & QFont::ForceOutline)) { FM_DEBUG(" ForceOutline set, but not smoothly scalable"); continue; } int px = -1; QtFontSize *size = 0; // 1. see if we have an exact matching size if (!(styleStrategy & QFont::ForceOutline)) { size = style->pixelSize(pixelSize); if (size) { FM_DEBUG(" found exact size match (%d pixels)", size->pixelSize); px = size->pixelSize; } } // 2. see if we have a smoothly scalable font if (!size && style->smoothScalable && ! (styleStrategy & QFont::PreferBitmap)) { size = style->pixelSize(SMOOTH_SCALABLE); if (size) { FM_DEBUG(" found smoothly scalable font (%d pixels)", pixelSize); px = pixelSize; } } // 3. see if we have a bitmap scalable font if (!size && style->bitmapScalable && (styleStrategy & QFont::PreferMatch)) { size = style->pixelSize(0); if (size) { FM_DEBUG(" found bitmap scalable font (%d pixels)", pixelSize); px = pixelSize; } } // 4. find closest size match if (! size) { unsigned int distance = ~0u; for (int x = 0; x < style->count; ++x) { unsigned int d; if (style->pixelSizes[x].pixelSize < pixelSize) { // penalize sizes that are smaller than the // requested size, due to truncation from floating // point to integer conversions d = pixelSize - style->pixelSizes[x].pixelSize + 1; } else { d = style->pixelSizes[x].pixelSize - pixelSize; } if (d < distance) { distance = d; size = style->pixelSizes + x; FM_DEBUG(" best size so far: %3d (%d)", size->pixelSize, pixelSize); } } if (!size) { FM_DEBUG(" no size supports the script we want"); continue; } if (style->bitmapScalable && ! (styleStrategy & QFont::PreferQuality) && (distance * 10 / pixelSize) >= 2) { // the closest size is not close enough, go ahead and // use a bitmap scaled font size = style->pixelSize(0); px = pixelSize; } else { px = size->pixelSize; } } unsigned int this_score = 0x0000; enum { PitchMismatch = 0x4000, StyleMismatch = 0x2000, BitmapScaledPenalty = 0x1000, EncodingMismatch = 0x0002 }; if (pitch != '*') { #if !defined(QWS) && defined(Q_OS_MAC) qt_mac_get_fixed_pitch(const_cast(family)); #endif if ((pitch == 'm' && !family->fixedPitch) || (pitch == 'p' && family->fixedPitch)) this_score += PitchMismatch; } if (styleKey != style->key) this_score += StyleMismatch; if (!style->smoothScalable && px != size->pixelSize) // bitmap scaled this_score += BitmapScaledPenalty; if (px != pixelSize) // close, but not exact, size match this_score += qAbs(px - pixelSize); if (this_score < score) { FM_DEBUG(" found a match: score %x best score so far %x", this_score, score); score = this_score; desc->foundry = foundry; desc->style = style; desc->size = size; } else { FM_DEBUG(" score %x no better than best %x", this_score, score); } } return score; } static bool matchFamilyName(const QString &familyName, QtFontFamily *f) { if (familyName.isEmpty()) return true; if (f->name.compare(familyName, Qt::CaseInsensitive) == 0) return true; QStringList::const_iterator it = f->aliases.constBegin(); while (it != f->aliases.constEnd()) { if ((*it).compare(familyName, Qt::CaseInsensitive) == 0) return true; ++it; } return false; } /*! \internal Tries to find the best match for a given request and family/foundry */ static void match(int script, const QFontDef &request, const QString &family_name, const QString &foundry_name, int force_encoding_id, QtFontDesc *desc, const QList &blacklistedFamilies) { Q_UNUSED(force_encoding_id); QtFontStyle::Key styleKey; styleKey.style = request.style; styleKey.weight = request.weight; styleKey.stretch = request.stretch; char pitch = request.ignorePitch ? '*' : request.fixedPitch ? 'm' : 'p'; FM_DEBUG("QFontDatabase::match\n" " request:\n" " family: %s [%s], script: %d\n" " weight: %d, style: %d\n" " stretch: %d\n" " pixelSize: %g\n" " pitch: %c", family_name.isEmpty() ? "-- first in script --" : family_name.toLatin1().constData(), foundry_name.isEmpty() ? "-- any --" : foundry_name.toLatin1().constData(), script, request.weight, request.style, request.stretch, request.pixelSize, pitch); desc->family = 0; desc->foundry = 0; desc->style = 0; desc->size = 0; desc->encoding = 0; desc->familyIndex = -1; unsigned int score = ~0u; load(family_name, script); QFontDatabasePrivate *db = privateDb(); for (int x = 0; x < db->count; ++x) { if (blacklistedFamilies.contains(x)) continue; QtFontDesc test; test.family = db->families[x]; test.familyIndex = x; if (!matchFamilyName(family_name, test.family)) continue; if (family_name.isEmpty()) load(test.family->name, script); uint score_adjust = 0; bool supported = (script == QUnicodeTables::Common); for (int ws = 1; !supported && ws < QFontDatabase::WritingSystemsCount; ++ws) { if (scriptForWritingSystem[ws] != script) continue; if (test.family->writingSystems[ws] & QtFontFamily::Supported) supported = true; } if (!supported) { // family not supported in the script we want continue; } // as we know the script is supported, we can be sure // to find a matching font here. unsigned int newscore = bestFoundry(script, score, request.styleStrategy, test.family, foundry_name, styleKey, request.pixelSize, pitch, &test, force_encoding_id); if (test.foundry == 0) { // the specific foundry was not found, so look for // any foundry matching our requirements newscore = bestFoundry(script, score, request.styleStrategy, test.family, QString(), styleKey, request.pixelSize, pitch, &test, force_encoding_id); } newscore += score_adjust; if (newscore < score) { score = newscore; *desc = test; } if (newscore < 10) // xlfd instead of FT... just accept it break; } } static QString styleStringHelper(int weight, QFont::Style style) { QString result; if (weight >= QFont::Black) result = QCoreApplication::translate("QFontDatabase", "Black"); else if (weight >= QFont::Bold) result = QCoreApplication::translate("QFontDatabase", "Bold"); else if (weight >= QFont::DemiBold) result = QCoreApplication::translate("QFontDatabase", "Demi Bold"); else if (weight < QFont::Normal) result = QCoreApplication::translate("QFontDatabase", "Light"); if (style == QFont::StyleItalic) result += QLatin1Char(' ') + QCoreApplication::translate("QFontDatabase", "Italic"); else if (style == QFont::StyleOblique) result += QLatin1Char(' ') + QCoreApplication::translate("QFontDatabase", "Oblique"); if (result.isEmpty()) result = QCoreApplication::translate("QFontDatabase", "Normal"); return result.simplified(); } /*! Returns a string that describes the style of the \a font. For example, "Bold Italic", "Bold", "Italic" or "Normal". An empty string may be returned. */ QString QFontDatabase::styleString(const QFont &font) { return font.styleName().isEmpty() ? styleStringHelper(font.weight(), font.style()) : font.styleName(); } /*! Returns a string that describes the style of the \a fontInfo. For example, "Bold Italic", "Bold", "Italic" or "Normal". An empty string may be returned. */ QString QFontDatabase::styleString(const QFontInfo &fontInfo) { return fontInfo.styleName().isEmpty() ? styleStringHelper(fontInfo.weight(), fontInfo.style()) : fontInfo.styleName(); } /*! \class QFontDatabase \threadsafe \inmodule QtGui \brief The QFontDatabase class provides information about the fonts available in the underlying window system. \ingroup appearance The most common uses of this class are to query the database for the list of font families() and for the pointSizes() and styles() that are available for each family. An alternative to pointSizes() is smoothSizes() which returns the sizes at which a given family and style will look attractive. If the font family is available from two or more foundries the foundry name is included in the family name; for example: "Helvetica [Adobe]" and "Helvetica [Cronyx]". When you specify a family, you can either use the old hyphenated "foundry-family" format or the bracketed "family [foundry]" format; for example: "Cronyx-Helvetica" or "Helvetica [Cronyx]". If the family has a foundry it is always returned using the bracketed format, as is the case with the value returned by families(). The font() function returns a QFont given a family, style and point size. A family and style combination can be checked to see if it is italic() or bold(), and to retrieve its weight(). Similarly we can call isBitmapScalable(), isSmoothlyScalable(), isScalable() and isFixedPitch(). Use the styleString() to obtain a text version of a style. The QFontDatabase class also supports some static functions, for example, standardSizes(). You can retrieve the description of a writing system using writingSystemName(), and a sample of characters in a writing system with writingSystemSample(). Example: \snippet qfontdatabase/main.cpp 0 \snippet qfontdatabase/main.cpp 1 This example gets the list of font families, the list of styles for each family, and the point sizes that are available for each combination of family and style, displaying this information in a tree view. \sa QFont, QFontInfo, QFontMetrics, {Character Map Example} */ /*! Creates a font database object. */ QFontDatabase::QFontDatabase() { QMutexLocker locker(fontDatabaseMutex()); createDatabase(); d = privateDb(); } /*! \enum QFontDatabase::WritingSystem \value Any \value Latin \value Greek \value Cyrillic \value Armenian \value Hebrew \value Arabic \value Syriac \value Thaana \value Devanagari \value Bengali \value Gurmukhi \value Gujarati \value Oriya \value Tamil \value Telugu \value Kannada \value Malayalam \value Sinhala \value Thai \value Lao \value Tibetan \value Myanmar \value Georgian \value Khmer \value SimplifiedChinese \value TraditionalChinese \value Japanese \value Korean \value Vietnamese \value Symbol \value Other (the same as Symbol) \value Ogham \value Runic \value Nko \omitvalue WritingSystemsCount */ /*! Returns a sorted list of the available writing systems. This is list generated from information about all installed fonts on the system. \sa families() */ QList QFontDatabase::writingSystems() const { QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(); QList list; for (int i = 0; i < d->count; ++i) { QtFontFamily *family = d->families[i]; if (family->count == 0) continue; for (int x = Latin; x < WritingSystemsCount; ++x) { const WritingSystem writingSystem = WritingSystem(x); if (!(family->writingSystems[writingSystem] & QtFontFamily::Supported)) continue; if (!list.contains(writingSystem)) list.append(writingSystem); } } qSort(list); return list; } /*! Returns a sorted list of the writing systems supported by a given font \a family. \sa families() */ QList QFontDatabase::writingSystems(const QString &family) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(); QList list; QtFontFamily *f = d->family(familyName); if (!f || f->count == 0) return list; for (int x = Latin; x < WritingSystemsCount; ++x) { const WritingSystem writingSystem = WritingSystem(x); if (f->writingSystems[writingSystem] & QtFontFamily::Supported) list.append(writingSystem); } return list; } /*! Returns a sorted list of the available font families which support the \a writingSystem. If a family exists in several foundries, the returned name for that font is in the form "family [foundry]". Examples: "Times [Adobe]", "Times [Cronyx]", "Palatino". \sa writingSystems() */ QStringList QFontDatabase::families(WritingSystem writingSystem) const { QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(); QStringList flist; for (int i = 0; i < d->count; i++) { QtFontFamily *f = d->families[i]; if (f->count == 0) continue; if (writingSystem != Any && (f->writingSystems[writingSystem] != QtFontFamily::Supported)) continue; if (f->count == 1) { flist.append(f->name); } else { for (int j = 0; j < f->count; j++) { QString str = f->name; QString foundry = f->foundries[j]->name; if (!foundry.isEmpty()) { str += QLatin1String(" ["); str += foundry; str += QLatin1Char(']'); } flist.append(str); } } } return flist; } /*! Returns a list of the styles available for the font family \a family. Some example styles: "Light", "Light Italic", "Bold", "Oblique", "Demi". The list may be empty. \sa families() */ QStringList QFontDatabase::styles(const QString &family) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QStringList l; QtFontFamily *f = d->family(familyName); if (!f) return l; QtFontFoundry allStyles(foundryName); for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) { QtFontStyle::Key ke(foundry->styles[k]->key); ke.stretch = 0; allStyles.style(ke, foundry->styles[k]->styleName, true); } } } for (int i = 0; i < allStyles.count; i++) { l.append(allStyles.styles[i]->styleName.isEmpty() ? styleStringHelper(allStyles.styles[i]->key.weight, (QFont::Style)allStyles.styles[i]->key.style) : allStyles.styles[i]->styleName); } return l; } /*! Returns true if the font that has family \a family and style \a style is fixed pitch; otherwise returns false. */ bool QFontDatabase::isFixedPitch(const QString &family, const QString &style) const { Q_UNUSED(style); QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontFamily *f = d->family(familyName); #if !defined(QWS) && defined(Q_OS_MAC) qt_mac_get_fixed_pitch(f); #endif return (f && f->fixedPitch); } /*! Returns true if the font that has family \a family and style \a style is a scalable bitmap font; otherwise returns false. Scaling a bitmap font usually produces an unattractive hardly readable result, because the pixels of the font are scaled. If you need to scale a bitmap font it is better to scale it to one of the fixed sizes returned by smoothSizes(). \sa isScalable(), isSmoothlyScalable() */ bool QFontDatabase::isBitmapScalable(const QString &family, const QString &style) const { bool bitmapScalable = false; QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontStyle::Key styleKey(style); QtFontFamily *f = d->family(familyName); if (!f) return bitmapScalable; for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) if ((style.isEmpty() || foundry->styles[k]->styleName == style || foundry->styles[k]->key == styleKey) && foundry->styles[k]->bitmapScalable && !foundry->styles[k]->smoothScalable) { bitmapScalable = true; goto end; } } } end: return bitmapScalable; } /*! Returns true if the font that has family \a family and style \a style is smoothly scalable; otherwise returns false. If this function returns true, it's safe to scale this font to any size, and the result will always look attractive. \sa isScalable(), isBitmapScalable() */ bool QFontDatabase::isSmoothlyScalable(const QString &family, const QString &style) const { bool smoothScalable = false; QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontStyle::Key styleKey(style); QtFontFamily *f = d->family(familyName); if (!f) return smoothScalable; for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) if ((style.isEmpty() || foundry->styles[k]->styleName == style || foundry->styles[k]->key == styleKey) && foundry->styles[k]->smoothScalable) { smoothScalable = true; goto end; } } } end: return smoothScalable; } /*! Returns true if the font that has family \a family and style \a style is scalable; otherwise returns false. \sa isBitmapScalable(), isSmoothlyScalable() */ bool QFontDatabase::isScalable(const QString &family, const QString &style) const { QMutexLocker locker(fontDatabaseMutex()); if (isSmoothlyScalable(family, style)) return true; return isBitmapScalable(family, style); } /*! Returns a list of the point sizes available for the font that has family \a family and style \a styleName. The list may be empty. \sa smoothSizes(), standardSizes() */ QList QFontDatabase::pointSizes(const QString &family, const QString &styleName) { if (QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable()) return standardSizes(); bool smoothScalable = false; QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontStyle::Key styleKey(styleName); QList sizes; QtFontFamily *fam = d->family(familyName); if (!fam) return sizes; const int dpi = qt_defaultDpiY(); // embedded for (int j = 0; j < fam->count; j++) { QtFontFoundry *foundry = fam->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { QtFontStyle *style = foundry->style(styleKey, styleName); if (!style) continue; if (style->smoothScalable) { smoothScalable = true; goto end; } for (int l = 0; l < style->count; l++) { const QtFontSize *size = style->pixelSizes + l; if (size->pixelSize != 0 && size->pixelSize != USHRT_MAX) { const uint pointSize = qRound(size->pixelSize * 72.0 / dpi); if (! sizes.contains(pointSize)) sizes.append(pointSize); } } } } end: if (smoothScalable) return standardSizes(); qSort(sizes); return sizes; } /*! Returns a QFont object that has family \a family, style \a style and point size \a pointSize. If no matching font could be created, a QFont object that uses the application's default font is returned. */ QFont QFontDatabase::font(const QString &family, const QString &style, int pointSize) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontFoundry allStyles(foundryName); QtFontFamily *f = d->family(familyName); if (!f) return QGuiApplication::font(); for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); } } QtFontStyle::Key styleKey(style); QtFontStyle *s = bestStyle(&allStyles, styleKey, style); if (!s) // no styles found? return QGuiApplication::font(); QFont fnt(family, pointSize, s->key.weight); fnt.setStyle((QFont::Style)s->key.style); if (!s->styleName.isEmpty()) fnt.setStyleName(s->styleName); return fnt; } /*! Returns the point sizes of a font that has family \a family and style \a styleName that will look attractive. The list may be empty. For non-scalable fonts and bitmap scalable fonts, this function is equivalent to pointSizes(). \sa pointSizes(), standardSizes() */ QList QFontDatabase::smoothSizes(const QString &family, const QString &styleName) { if (QGuiApplicationPrivate::platformIntegration()->fontDatabase()->fontsAlwaysScalable()) return standardSizes(); bool smoothScalable = false; QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontStyle::Key styleKey(styleName); QList sizes; QtFontFamily *fam = d->family(familyName); if (!fam) return sizes; const int dpi = qt_defaultDpiY(); // embedded for (int j = 0; j < fam->count; j++) { QtFontFoundry *foundry = fam->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { QtFontStyle *style = foundry->style(styleKey, styleName); if (!style) continue; if (style->smoothScalable) { smoothScalable = true; goto end; } for (int l = 0; l < style->count; l++) { const QtFontSize *size = style->pixelSizes + l; if (size->pixelSize != 0 && size->pixelSize != USHRT_MAX) { const uint pointSize = qRound(size->pixelSize * 72.0 / dpi); if (! sizes.contains(pointSize)) sizes.append(pointSize); } } } } end: if (smoothScalable) return QFontDatabase::standardSizes(); qSort(sizes); return sizes; } /*! Returns a list of standard font sizes. \sa smoothSizes(), pointSizes() */ QList QFontDatabase::standardSizes() { return QGuiApplicationPrivate::platformIntegration()->fontDatabase()->standardSizes(); } /*! Returns true if the font that has family \a family and style \a style is italic; otherwise returns false. \sa weight(), bold() */ bool QFontDatabase::italic(const QString &family, const QString &style) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontFoundry allStyles(foundryName); QtFontFamily *f = d->family(familyName); if (!f) return false; for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); } } QtFontStyle::Key styleKey(style); QtFontStyle *s = allStyles.style(styleKey, style); return s && s->key.style == QFont::StyleItalic; } /*! Returns true if the font that has family \a family and style \a style is bold; otherwise returns false. \sa italic(), weight() */ bool QFontDatabase::bold(const QString &family, const QString &style) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontFoundry allStyles(foundryName); QtFontFamily *f = d->family(familyName); if (!f) return false; for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); } } QtFontStyle::Key styleKey(style); QtFontStyle *s = allStyles.style(styleKey, style); return s && s->key.weight >= QFont::Bold; } /*! Returns the weight of the font that has family \a family and style \a style. If there is no such family and style combination, returns -1. \sa italic(), bold() */ int QFontDatabase::weight(const QString &family, const QString &style) const { QString familyName, foundryName; parseFontName(family, foundryName, familyName); QMutexLocker locker(fontDatabaseMutex()); QT_PREPEND_NAMESPACE(load)(familyName); QtFontFoundry allStyles(foundryName); QtFontFamily *f = d->family(familyName); if (!f) return -1; for (int j = 0; j < f->count; j++) { QtFontFoundry *foundry = f->foundries[j]; if (foundryName.isEmpty() || foundry->name.compare(foundryName, Qt::CaseInsensitive) == 0) { for (int k = 0; k < foundry->count; k++) allStyles.style(foundry->styles[k]->key, foundry->styles[k]->styleName, true); } } QtFontStyle::Key styleKey(style); QtFontStyle *s = allStyles.style(styleKey, style); return s ? s->key.weight : -1; } /*! \internal */ bool QFontDatabase::hasFamily(const QString &family) const { QString parsedFamily, foundry; parseFontName(family, foundry, parsedFamily); const QString familyAlias = resolveFontFamilyAlias(parsedFamily); return families().contains(familyAlias, Qt::CaseInsensitive); } /*! Returns the names the \a writingSystem (e.g. for displaying to the user in a dialog). */ QString QFontDatabase::writingSystemName(WritingSystem writingSystem) { const char *name = 0; switch (writingSystem) { case Any: name = QT_TRANSLATE_NOOP("QFontDatabase", "Any"); break; case Latin: name = QT_TRANSLATE_NOOP("QFontDatabase", "Latin"); break; case Greek: name = QT_TRANSLATE_NOOP("QFontDatabase", "Greek"); break; case Cyrillic: name = QT_TRANSLATE_NOOP("QFontDatabase", "Cyrillic"); break; case Armenian: name = QT_TRANSLATE_NOOP("QFontDatabase", "Armenian"); break; case Hebrew: name = QT_TRANSLATE_NOOP("QFontDatabase", "Hebrew"); break; case Arabic: name = QT_TRANSLATE_NOOP("QFontDatabase", "Arabic"); break; case Syriac: name = QT_TRANSLATE_NOOP("QFontDatabase", "Syriac"); break; case Thaana: name = QT_TRANSLATE_NOOP("QFontDatabase", "Thaana"); break; case Devanagari: name = QT_TRANSLATE_NOOP("QFontDatabase", "Devanagari"); break; case Bengali: name = QT_TRANSLATE_NOOP("QFontDatabase", "Bengali"); break; case Gurmukhi: name = QT_TRANSLATE_NOOP("QFontDatabase", "Gurmukhi"); break; case Gujarati: name = QT_TRANSLATE_NOOP("QFontDatabase", "Gujarati"); break; case Oriya: name = QT_TRANSLATE_NOOP("QFontDatabase", "Oriya"); break; case Tamil: name = QT_TRANSLATE_NOOP("QFontDatabase", "Tamil"); break; case Telugu: name = QT_TRANSLATE_NOOP("QFontDatabase", "Telugu"); break; case Kannada: name = QT_TRANSLATE_NOOP("QFontDatabase", "Kannada"); break; case Malayalam: name = QT_TRANSLATE_NOOP("QFontDatabase", "Malayalam"); break; case Sinhala: name = QT_TRANSLATE_NOOP("QFontDatabase", "Sinhala"); break; case Thai: name = QT_TRANSLATE_NOOP("QFontDatabase", "Thai"); break; case Lao: name = QT_TRANSLATE_NOOP("QFontDatabase", "Lao"); break; case Tibetan: name = QT_TRANSLATE_NOOP("QFontDatabase", "Tibetan"); break; case Myanmar: name = QT_TRANSLATE_NOOP("QFontDatabase", "Myanmar"); break; case Georgian: name = QT_TRANSLATE_NOOP("QFontDatabase", "Georgian"); break; case Khmer: name = QT_TRANSLATE_NOOP("QFontDatabase", "Khmer"); break; case SimplifiedChinese: name = QT_TRANSLATE_NOOP("QFontDatabase", "Simplified Chinese"); break; case TraditionalChinese: name = QT_TRANSLATE_NOOP("QFontDatabase", "Traditional Chinese"); break; case Japanese: name = QT_TRANSLATE_NOOP("QFontDatabase", "Japanese"); break; case Korean: name = QT_TRANSLATE_NOOP("QFontDatabase", "Korean"); break; case Vietnamese: name = QT_TRANSLATE_NOOP("QFontDatabase", "Vietnamese"); break; case Symbol: name = QT_TRANSLATE_NOOP("QFontDatabase", "Symbol"); break; case Ogham: name = QT_TRANSLATE_NOOP("QFontDatabase", "Ogham"); break; case Runic: name = QT_TRANSLATE_NOOP("QFontDatabase", "Runic"); break; case Nko: name = QT_TRANSLATE_NOOP("QFontDatabase", "N'Ko"); break; default: Q_ASSERT_X(false, "QFontDatabase::writingSystemName", "invalid 'writingSystem' parameter"); break; } return QCoreApplication::translate("QFontDatabase", name); } /*! Returns a string with sample characters from \a writingSystem. */ QString QFontDatabase::writingSystemSample(WritingSystem writingSystem) { QString sample; switch (writingSystem) { case Any: case Symbol: // show only ascii characters sample += QLatin1String("AaBbzZ"); break; case Latin: // This is cheating... we only show latin-1 characters so that we don't // end up loading lots of fonts - at least on X11... sample = QLatin1String("Aa"); sample += QChar(0x00C3); sample += QChar(0x00E1); sample += QLatin1String("Zz"); break; case Greek: sample += QChar(0x0393); sample += QChar(0x03B1); sample += QChar(0x03A9); sample += QChar(0x03C9); break; case Cyrillic: sample += QChar(0x0414); sample += QChar(0x0434); sample += QChar(0x0436); sample += QChar(0x044f); break; case Armenian: sample += QChar(0x053f); sample += QChar(0x054f); sample += QChar(0x056f); sample += QChar(0x057f); break; case Hebrew: sample += QChar(0x05D0); sample += QChar(0x05D1); sample += QChar(0x05D2); sample += QChar(0x05D3); break; case Arabic: sample += QChar(0x0628); sample += QChar(0x0629); sample += QChar(0x062A); sample += QChar(0x063A); break; case Syriac: sample += QChar(0x0715); sample += QChar(0x0725); sample += QChar(0x0716); sample += QChar(0x0726); break; case Thaana: sample += QChar(0x0784); sample += QChar(0x0794); sample += QChar(0x078c); sample += QChar(0x078d); break; case Devanagari: sample += QChar(0x0905); sample += QChar(0x0915); sample += QChar(0x0925); sample += QChar(0x0935); break; case Bengali: sample += QChar(0x0986); sample += QChar(0x0996); sample += QChar(0x09a6); sample += QChar(0x09b6); break; case Gurmukhi: sample += QChar(0x0a05); sample += QChar(0x0a15); sample += QChar(0x0a25); sample += QChar(0x0a35); break; case Gujarati: sample += QChar(0x0a85); sample += QChar(0x0a95); sample += QChar(0x0aa5); sample += QChar(0x0ab5); break; case Oriya: sample += QChar(0x0b06); sample += QChar(0x0b16); sample += QChar(0x0b2b); sample += QChar(0x0b36); break; case Tamil: sample += QChar(0x0b89); sample += QChar(0x0b99); sample += QChar(0x0ba9); sample += QChar(0x0bb9); break; case Telugu: sample += QChar(0x0c05); sample += QChar(0x0c15); sample += QChar(0x0c25); sample += QChar(0x0c35); break; case Kannada: sample += QChar(0x0c85); sample += QChar(0x0c95); sample += QChar(0x0ca5); sample += QChar(0x0cb5); break; case Malayalam: sample += QChar(0x0d05); sample += QChar(0x0d15); sample += QChar(0x0d25); sample += QChar(0x0d35); break; case Sinhala: sample += QChar(0x0d90); sample += QChar(0x0da0); sample += QChar(0x0db0); sample += QChar(0x0dc0); break; case Thai: sample += QChar(0x0e02); sample += QChar(0x0e12); sample += QChar(0x0e22); sample += QChar(0x0e32); break; case Lao: sample += QChar(0x0e8d); sample += QChar(0x0e9d); sample += QChar(0x0ead); sample += QChar(0x0ebd); break; case Tibetan: sample += QChar(0x0f00); sample += QChar(0x0f01); sample += QChar(0x0f02); sample += QChar(0x0f03); break; case Myanmar: sample += QChar(0x1000); sample += QChar(0x1001); sample += QChar(0x1002); sample += QChar(0x1003); break; case Georgian: sample += QChar(0x10a0); sample += QChar(0x10b0); sample += QChar(0x10c0); sample += QChar(0x10d0); break; case Khmer: sample += QChar(0x1780); sample += QChar(0x1790); sample += QChar(0x17b0); sample += QChar(0x17c0); break; case SimplifiedChinese: sample += QChar(0x4e2d); sample += QChar(0x6587); sample += QChar(0x8303); sample += QChar(0x4f8b); break; case TraditionalChinese: sample += QChar(0x4e2d); sample += QChar(0x6587); sample += QChar(0x7bc4); sample += QChar(0x4f8b); break; case Japanese: sample += QChar(0x30b5); sample += QChar(0x30f3); sample += QChar(0x30d7); sample += QChar(0x30eb); sample += QChar(0x3067); sample += QChar(0x3059); break; case Korean: sample += QChar(0xac00); sample += QChar(0xac11); sample += QChar(0xac1a); sample += QChar(0xac2f); break; case Vietnamese: { static const char vietnameseUtf8[] = { char(0xef), char(0xbb), char(0xbf), char(0xe1), char(0xbb), char(0x97), char(0xe1), char(0xbb), char(0x99), char(0xe1), char(0xbb), char(0x91), char(0xe1), char(0xbb), char(0x93), }; sample += QString::fromUtf8(vietnameseUtf8, sizeof(vietnameseUtf8)); break; } case Ogham: sample += QChar(0x1681); sample += QChar(0x1682); sample += QChar(0x1683); sample += QChar(0x1684); break; case Runic: sample += QChar(0x16a0); sample += QChar(0x16a1); sample += QChar(0x16a2); sample += QChar(0x16a3); break; case Nko: sample += QChar(0x7ca); sample += QChar(0x7cb); sample += QChar(0x7cc); sample += QChar(0x7cd); break; default: break; } return sample; } void QFontDatabase::parseFontName(const QString &name, QString &foundry, QString &family) { QT_PREPEND_NAMESPACE(parseFontName)(name, foundry, family); } void QFontDatabase::createDatabase() { initializeDb(); } // used from qfontengine_ft.cpp Q_GUI_EXPORT QByteArray qt_fontdata_from_index(int index) { QMutexLocker locker(fontDatabaseMutex()); return privateDb()->applicationFonts.value(index).data; } int QFontDatabasePrivate::addAppFont(const QByteArray &fontData, const QString &fileName) { QFontDatabasePrivate::ApplicationFont font; font.data = fontData; font.fileName = fileName; int i; for (i = 0; i < applicationFonts.count(); ++i) if (applicationFonts.at(i).families.isEmpty()) break; if (i >= applicationFonts.count()) { applicationFonts.append(ApplicationFont()); i = applicationFonts.count() - 1; } if (font.fileName.isEmpty() && !fontData.isEmpty()) font.fileName = QString::fromLatin1(":qmemoryfonts/") + QString::number(i); registerFont(&font); if (font.families.isEmpty()) return -1; applicationFonts[i] = font; invalidate(); return i; } bool QFontDatabasePrivate::isApplicationFont(const QString &fileName) { for (int i = 0; i < applicationFonts.count(); ++i) if (applicationFonts.at(i).fileName == fileName) return true; return false; } /*! \since 4.2 Loads the font from the file specified by \a fileName and makes it available to the application. An ID is returned that can be used to remove the font again with removeApplicationFont() or to retrieve the list of family names contained in the font. The function returns -1 if the font could not be loaded. Currently only TrueType fonts, TrueType font collections, and OpenType fonts are supported. \note Adding application fonts on Unix/X11 platforms without fontconfig is currently not supported. \sa addApplicationFontFromData(), applicationFontFamilies(), removeApplicationFont() */ int QFontDatabase::addApplicationFont(const QString &fileName) { QByteArray data; if (!QFileInfo(fileName).isNativePath()) { QFile f(fileName); if (!f.open(QIODevice::ReadOnly)) return -1; data = f.readAll(); } QMutexLocker locker(fontDatabaseMutex()); return privateDb()->addAppFont(data, fileName); } /*! \since 4.2 Loads the font from binary data specified by \a fontData and makes it available to the application. An ID is returned that can be used to remove the font again with removeApplicationFont() or to retrieve the list of family names contained in the font. The function returns -1 if the font could not be loaded. Currently only TrueType fonts and TrueType font collections are supported. \b{Note:} Adding application fonts on Unix/X11 platforms without fontconfig is currently not supported. \sa addApplicationFont(), applicationFontFamilies(), removeApplicationFont() */ int QFontDatabase::addApplicationFontFromData(const QByteArray &fontData) { QMutexLocker locker(fontDatabaseMutex()); return privateDb()->addAppFont(fontData, QString() /* fileName */); } /*! \since 4.2 Returns a list of font families for the given application font identified by \a id. \sa addApplicationFont(), addApplicationFontFromData() */ QStringList QFontDatabase::applicationFontFamilies(int id) { QMutexLocker locker(fontDatabaseMutex()); return privateDb()->applicationFonts.value(id).families; } /*! \fn bool QFontDatabase::removeApplicationFont(int id) \since 4.2 Removes the previously loaded application font identified by \a id. Returns true if unloading of the font succeeded; otherwise returns false. \sa removeAllApplicationFonts(), addApplicationFont(), addApplicationFontFromData() */ /*! \fn bool QFontDatabase::removeAllApplicationFonts() \since 4.2 Removes all application-local fonts previously added using addApplicationFont() and addApplicationFontFromData(). Returns true if unloading of the fonts succeeded; otherwise returns false. \sa removeApplicationFont(), addApplicationFont(), addApplicationFontFromData() */ /*! \fn bool QFontDatabase::supportsThreadedFontRendering() \since 4.4 Returns true if font rendering is supported outside the GUI thread, false otherwise. In other words, a return value of false means that all QPainter::drawText() calls outside the GUI thread will not produce readable output. \sa {Thread-Support in Qt Modules#Painting In Threads}{Painting In Threads} */ QT_END_NAMESPACE