src/gui/text/qfontdatabase.cpp

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/****************************************************************************
**
** Copyright (C) 1992-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#include <qdir.h>
#include "qfontdatabase.h"
#include "qdebug.h"
#include "qalgorithms.h"
#include "qapplication.h"
#include "qvarlengtharray.h" // here or earlier - workaround for VC++6
#include "private/qunicodetables_p.h"
#include "qfontengine_p.h"
#include "qopentype_p.h"

#ifdef Q_WS_X11
#include <locale.h>
#endif
#include <stdlib.h>
#include <limits.h>

// #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

#if defined(Q_CC_MSVC) && !defined(Q_CC_MSVC_NET)
#  define for if(0){}else for
#endif


Q_GUI_EXPORT bool qt_enable_test_font = false;

static int ucstricmp(const QString &as, const QString &bs)
{
    const QChar *a = as.unicode();
    const QChar *b = bs.unicode();
    if (a == b)
        return 0;
    if (a == 0)
        return 1;
    if (b == 0)
        return -1;
    int l=qMin(as.length(),bs.length());
    while (l-- && QUnicodeTables::lower(*a) == QUnicodeTables::lower(*b))
        a++,b++;
    if (l==-1)
        return (as.length()-bs.length());
    return QUnicodeTables::lower(*a).unicode() - QUnicodeTables::lower(*b).unicode();
}

static int getFontWeight(const QString &weightString)
{
    QString s = weightString.toLower();

    // Test in decreasing order of commonness
    if (s == QLatin1String("medium") ||
        s == QLatin1String("normal"))
        return QFont::Normal;
    if (s == QLatin1String("bold"))
        return QFont::Bold;
    if (s == QLatin1String("demibold") || s == QLatin1String("demi bold"))
        return QFont::DemiBold;
    if (s == QLatin1String("black"))
        return QFont::Black;
    if (s == QLatin1String("light"))
        return QFont::Light;

    if (s.contains(QLatin1String("bold"))) {
        if (s.contains(QLatin1String("demi")))
            return (int) QFont::DemiBold;
        return (int) QFont::Bold;
    }

    if (s.contains(QLatin1String("light")))
        return (int) QFont::Light;

    if (s.contains(QLatin1String("black")))
        return (int) QFont::Black;

    return (int) QFont::Normal;
}

struct QtFontEncoding
{
    signed int encoding : 16;

    uint xpoint   : 16;
    uint xres     : 8;
    uint yres     : 8;
    uint avgwidth : 16;
    uchar pitch   : 8;
};

struct QtFontSize
{
    unsigned short pixelSize;

#ifdef Q_WS_X11
    int count;
    QtFontEncoding *encodings;
    QtFontEncoding *encodingID(int id, uint xpoint = 0, uint xres = 0,
                                uint yres = 0, uint avgwidth = 0, bool add = false);
#endif // Q_WS_X11
#ifdef Q_WS_QWS
    QByteArray fileName;
#endif
};


#ifdef Q_WS_X11
QtFontEncoding *QtFontSize::encodingID(int id, uint xpoint, uint xres,
                                        uint yres, uint avgwidth, bool add)
{
    // we don't match using the xpoint, xres and yres parameters, only the id
    for (int i = 0; i < count; ++i) {
        if (encodings[i].encoding == id)
            return encodings + i;
    }

    if (!add) return 0;

    if (!(count % 4))
        encodings = (QtFontEncoding *)
                    realloc(encodings,
                             (((count+4) >> 2) << 2) * sizeof(QtFontEncoding));
    encodings[count].encoding = id;
    encodings[count].xpoint = xpoint;
    encodings[count].xres = xres;
    encodings[count].yres = yres;
    encodings[count].avgwidth = avgwidth;
    encodings[count].pitch = '*';
    return encodings + count++;
}
#endif // Q_WS_X11

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)
    {
#if defined(Q_WS_X11)
        weightName = setwidthName = 0;
#endif // Q_WS_X11
    }

    ~QtFontStyle() {
#ifdef Q_WS_X11
        delete [] weightName;
        delete [] setwidthName;
#endif
#if defined(Q_WS_X11) || defined(Q_WS_QWS)
        while (count--) {
#ifdef Q_WS_X11
            free(pixelSizes[count].encodings);
#endif
#ifdef Q_WS_QWS
            pixelSizes[count].fileName.~QByteArray();
#endif
        }
#endif
        free(pixelSizes);
    }

    Key key;
    bool bitmapScalable : 1;
    bool smoothScalable : 1;
    signed int count    : 30;
    QtFontSize *pixelSizes;

#ifdef Q_WS_X11
    const char *weightName;
    const char *setwidthName;
#endif // Q_WS_X11
#ifdef Q_WS_QWS
    bool antialiased;
#endif

    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")))
        style = QFont::StyleItalic;
    else if (styleString.contains(QLatin1String("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 (!(count % 8))
        pixelSizes = (QtFontSize *)
                     realloc(pixelSizes,
                              (((count+8) >> 3) << 3) * sizeof(QtFontSize));
    pixelSizes[count].pixelSize = size;
#ifdef Q_WS_X11
    pixelSizes[count].count = 0;
    pixelSizes[count].encodings = 0;
#endif
#ifdef Q_WS_QWS
    new (&pixelSizes[count].fileName) QByteArray;
#endif
    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 &, bool = false);
};

QtFontStyle *QtFontFoundry::style(const QtFontStyle::Key &key, bool create)
{
    int pos = 0;
    if (count) {
        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))
        styles = (QtFontStyle **)
                 realloc(styles, (((count+8) >> 3) << 3) * sizeof(QtFontStyle *));

    memmove(styles + pos + 1, styles + pos, (count-pos)*sizeof(QtFontStyle *));
    styles[pos] = new QtFontStyle(key);
    count++;
    return styles[pos];
}


struct QtFontFamily
{
    enum WritingSystemStatus {
        Unknown         = 0,
        Supported       = 1,
        UnsupportedFT  = 2,
        UnsupportedXLFD = 4,
        Unsupported     = UnsupportedFT | UnsupportedXLFD
    };

    QtFontFamily(const QString &n)
        :
#ifdef Q_WS_X11
        fixedPitch(true), ftWritingSystemCheck(false),
        xlfdLoaded(false), synthetic(false), symbol_checked(false),
#else
        fixedPitch(false),
#endif
#ifdef Q_WS_WIN
        writingSystemCheck(false),
        loaded(false),
#endif
#if !defined(QWS) && defined(Q_OS_MAC)
        fixedPitchComputed(false),
#endif
        name(n), count(0), foundries(0) {
        memset(writingSystems, 0, sizeof(writingSystems));
    }
    ~QtFontFamily() {
        while (count--)
            delete foundries[count];
        free(foundries);
    }

    bool fixedPitch : 1;
#ifdef Q_WS_X11
    bool ftWritingSystemCheck : 1;
    bool xlfdLoaded : 1;
    bool synthetic : 1;
#endif
#ifdef Q_WS_WIN
    bool writingSystemCheck : 1;
    bool loaded : 1;
#endif
#if !defined(QWS) && defined(Q_OS_MAC)
    bool fixedPitchComputed : 1;
#endif
#ifdef Q_WS_X11
    bool symbol_checked;
#endif

    QString name;
    QString rawName;
#ifdef Q_WS_X11
    QByteArray fontFilename;
    int fontFileIndex;
#endif
#ifdef Q_WS_WIN
    QString english_name;
#endif
    int count;
    QtFontFoundry **foundries;

    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('i') == fm.width('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 (ucstricmp(foundries[i]->name, f) == 0)
            return foundries[i];
    }
    if (!create)
        return 0;

    if (!(count % 8))
        foundries = (QtFontFoundry **)
                    realloc(foundries,
                             (((count+8) >> 3) << 3) * sizeof(QtFontFoundry *));

    foundries[count] = new QtFontFoundry(f);
    return foundries[count++];
}

class QFontDatabasePrivate : public QObject
{
    Q_OBJECT
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;
#if defined(Q_OS_WIN)
        HANDLE handle;
        bool memoryFont;
#elif defined(Q_WS_MAC)
        ATSFontContainerRef handle;
#endif
        QStringList families;
    };
    QVector<ApplicationFont> applicationFonts;
    int addAppFont(const QByteArray &fontData, const QString &fileName);
    bool reregisterAppFonts;

    void invalidate();

Q_SIGNALS:
    void fontDatabaseChanged();
};

void QFontDatabasePrivate::invalidate()
{
    if (QFontCache::instance)
        QFontCache::instance->clear();
    free();
    emit 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 = ucstricmp(families[pos]->name, f)) && 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))
        families = (QtFontFamily **)
                   realloc(families,
                            (((count+8) >> 3) << 3) * sizeof(QtFontFamily *));

    memmove(families + pos + 1, families + pos, (count-pos)*sizeof(QtFontFamily *));
    families[pos] = new QtFontFamily(f);
    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
};


#if defined Q_WS_QWS || (defined(Q_WS_X11) && !defined(QT_NO_FONTCONFIG))
static inline bool requiresOpenType(int writingSystem)
{
    return ((writingSystem >= QFontDatabase::Syriac && writingSystem <= QFontDatabase::Sinhala)
            || writingSystem == QFontDatabase::Khmer);
}
static inline bool scriptRequiresOpenType(int script)
{
    return ((script >= QUnicodeTables::Syriac && script <= QUnicodeTables::Sinhala)
            || script == QUnicodeTables::Khmer);
}
#endif


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) {}
    QtFontFamily *family;
    QtFontFoundry *foundry;
    QtFontStyle *style;
    QtFontSize *size;
    QtFontEncoding *encoding;
};

#if !defined(Q_WS_MAC)
static void match(int script, const QFontDef &request,
                  const QString &family_name, const QString &foundry_name, int force_encoding_id,
                  QtFontDesc *desc);

static void initFontDef(const QtFontDesc &desc, const QFontDef &request, QFontDef *fontDef)
{
    fontDef->family = desc.family->name;
    if (! desc.foundry->name.isEmpty()) {
        fontDef->family += QString::fromLatin1(" [");
        fontDef->family += desc.foundry->name;
        fontDef->family += QString::fromLatin1("]");
    }

    if (desc.style->smoothScalable)
        fontDef->pixelSize = request.pixelSize;
    else if ((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;

    fontDef->weight        = desc.style->key.weight;
    fontDef->style         = desc.style->key.style;
    fontDef->fixedPitch    = desc.family->fixedPitch;
    fontDef->stretch       = desc.style->key.stretch;
    fontDef->ignorePitch   = false;
}
#endif

#if defined(Q_WS_X11) || defined(Q_WS_WIN)
static void getEngineData(const QFontPrivate *d, const QFontCache::Key &key)
{
    // look for the requested font in the engine data cache
    d->engineData = QFontCache::instance->findEngineData(key);
    if (!d->engineData) {
        // create a new one
        d->engineData = new QFontEngineData;
        QFontCache::instance->insertEngineData(key, 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;
}
#endif

Q_GLOBAL_STATIC(QFontDatabasePrivate, privateDb);

// used in qfontcombobox.cpp
QObject *qt_fontdatabase_private()
{
    return privateDb();
}

#define SMOOTH_SCALABLE 0xffff

#if defined(Q_WS_X11)
#  include "qfontdatabase_x11.cpp"
#elif defined(Q_WS_MAC)
#  include "qfontdatabase_mac.cpp"
#elif defined(Q_WS_WIN)
#  include "qfontdatabase_win.cpp"
#elif defined(Q_WS_QWS)
#  include "qfontdatabase_qws.cpp"
#endif

static QtFontStyle *bestStyle(QtFontFoundry *foundry, const QtFontStyle::Key &styleKey)
{
    int best = 0;
    int dist = 0xffff;

    for ( int i = 0; i < foundry->count; i++ ) {
  QtFontStyle *style = foundry->styles[i];

  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];
}

#if defined(Q_WS_X11)
static QtFontEncoding *findEncoding(int script, int styleStrategy,
                                    QtFontSize *size, int force_encoding_id)
{
    QtFontEncoding *encoding = 0;

    if (force_encoding_id >= 0) {
        encoding = size->encodingID(force_encoding_id);
        if (!encoding)
            FM_DEBUG("            required encoding_id not available");
        return encoding;
    }

    if (styleStrategy & (QFont::OpenGLCompatible | QFont::PreferBitmap)) {
        FM_DEBUG("            PreferBitmap and/or OpenGL set, skipping Freetype");
    } else {
        encoding = size->encodingID(-1); // -1 == prefer Freetype
        if (encoding)
            return encoding;
    }

    // FT not available, find an XLFD font, trying the default encoding first
    encoding = size->encodingID(QFontPrivate::defaultEncodingID);
    if (encoding) {
        // does it support the requested script?
        bool supportsScript = false;
        for (int ws = 1; !supportsScript && ws < QFontDatabase::WritingSystemsCount; ++ws) {
            if (scriptForWritingSystem[ws] != script)
                continue;
            supportsScript = writingSystems_for_xlfd_encoding[encoding->encoding][ws];
        }
        if (!supportsScript)
            encoding = 0;
    }
    // find the first encoding that supports the requested script
    for (int ws = 1; !encoding && ws < QFontDatabase::WritingSystemsCount; ++ws) {
        if (scriptForWritingSystem[ws] != script)
            continue;
        for (int x = 0; !encoding && x < size->count; ++x) {
            const int enc = size->encodings[x].encoding;
            if (writingSystems_for_xlfd_encoding[enc][ws])
                encoding = size->encodings + x;
        }
    }

    return encoding;
}
#endif // Q_WS_X11

#if !defined(Q_WS_MAC)
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() &&
            ucstricmp(foundry->name, foundry_name) != 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;
            }
        }

#ifdef Q_WS_X11
        QtFontEncoding *encoding = 0;
#endif

        // 4. find closest size match
        if (! size) {
            unsigned int distance = ~0u;
            for (int x = 0; x < style->count; ++x) {
#ifdef Q_WS_X11
                encoding =
                    findEncoding(script, styleStrategy, style->pixelSizes + x, force_encoding_id);
                if (!encoding) {
                    FM_DEBUG("          size %3d does not support the script we want",
                             style->pixelSizes[x].pixelSize);
                    continue;
                }
#endif

                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;
            }
        }

#ifdef Q_WS_X11
        if (size) {
            encoding = findEncoding(script, styleStrategy, size, force_encoding_id);
            if (!encoding) size = 0;
        }
        if (! encoding) {
            FM_DEBUG("          foundry doesn't support the script we want");
            continue;
        }
#endif // Q_WS_X11

        unsigned int this_score = 0x0000;
        enum {
            PitchMismatch       = 0x4000,
            StyleMismatch       = 0x2000,
            BitmapScaledPenalty = 0x1000,
            EncodingMismatch    = 0x0002,
            XLFDPenalty         = 0x0001
        };
#ifdef Q_WS_X11
        if (encoding->encoding != -1) {
            this_score += XLFDPenalty;
            if (encoding->encoding != QFontPrivate::defaultEncodingID)
                this_score += EncodingMismatch;
        }
        if (pitch != '*') {
            if (!(pitch == 'm' && encoding->pitch == 'c') && pitch != encoding->pitch)
                this_score += PitchMismatch;
        }
#else
        if (pitch != '*') {
#if !defined(QWS) && defined(Q_OS_MAC)
            qt_mac_get_fixed_pitch(const_cast<QtFontFamily*>(family));
#endif
            if ((pitch == 'm' && !family->fixedPitch)
                || (pitch == 'p' && family->fixedPitch))
                this_score += PitchMismatch;
        }
#endif
        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;
#ifdef Q_WS_X11
            desc->encoding = encoding;
#endif // Q_WS_X11
        } else {
            FM_DEBUG("          score %x no better than best %x", this_score, score);
        }
    }

    return score;
}
#endif

#if !defined(Q_WS_MAC)

static void match(int script, const QFontDef &request,
                  const QString &family_name, const QString &foundry_name, int force_encoding_id,
                  QtFontDesc *desc)
{
    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: %d\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);
#if defined(FONT_MATCH_DEBUG) && defined(Q_WS_X11)
    if (force_encoding_id >= 0) {
        FM_DEBUG("    required encoding: %d", force_encoding_id);
    }
#endif

    desc->family = 0;
    desc->foundry = 0;
    desc->style = 0;
    desc->size = 0;
    desc->encoding = 0;

    unsigned int score = ~0u;

    ::load(family_name, script);

    QFontDatabasePrivate *db = privateDb();
    for (int x = 0; x < db->count; ++x) {
        QtFontDesc test;
        test.family = db->families[x];

        if (!family_name.isEmpty()
            && ucstricmp(test.family->name, family_name) != 0
#ifdef Q_WS_WIN
            && ucstricmp(test.family->english_name, family_name) != 0
#endif
            )
            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;
    }
}
#endif


#if !defined(Q_WS_X11) && !defined(Q_WS_WIN) && !defined(Q_WS_MAC)

QFontEngine *
QFontDatabase::findFont(int script, const QFontPrivate *fp,
                        const QFontDef &request, int
#ifdef Q_WS_X11
                        force_encoding_id
#endif
    )
{
#ifndef Q_WS_X11
    const int force_encoding_id = -1;
#endif

    if (!privateDb()->count)
        initializeDb();

    QFontEngine *fe = 0;
    if (fp) {
        if (fp->rawMode) {
            fe = loadEngine(script, fp, request, 0, 0, 0
#ifdef Q_WS_X11
                            , 0, 0, false
#endif
#ifdef Q_WS_QWS
                            , 0
#endif
                );

            // if we fail to load the rawmode font, use a 12pixel box engine instead
            if (! fe) fe = new QFontEngineBox(12);
            return fe;
        }

        QFontCache::Key key(request, script
#if defined(Q_WS_X11)
                            , fp->screen
#endif
            );
        fe = QFontCache::instance->findEngine(key);
        if (fe)
            return fe;
    }

    QString family_name, foundry_name;
    QtFontStyle::Key styleKey;
    styleKey.style = request.style;
    styleKey.weight = request.weight;
    styleKey.stretch = request.stretch;
    char pitch = request.ignorePitch ? '*' : request.fixedPitch ? 'm' : 'p';

    parseFontName(request.family, foundry_name, family_name);

    FM_DEBUG("QFontDatabase::findFont\n"
             "  request:\n"
             "    family: %s [%s], script: %d\n"
             "    weight: %d, style: %d\n"
             "    stretch: %d\n"
             "    pixelSize: %d\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);
#if defined(FONT_MATCH_DEBUG) && defined(Q_WS_X11)
    if (force_encoding_id >= 0) {
        FM_DEBUG("    required encoding: %d", force_encoding_id);
    }
#endif

    if (qt_enable_test_font && request.family == QLatin1String("__Qt__Box__Engine__")) {
        fe = new QTestFontEngine(request.pixelSize);
        fe->fontDef = request;
    }

    if (!fe)
    {
        QtFontDesc desc;
        match(script, request, family_name, foundry_name, force_encoding_id, &desc);

        if (desc.family != 0 && desc.foundry != 0 && desc.style != 0
#ifdef Q_WS_X11
            && desc.size != 0 && desc.encoding != 0
#endif
            ) {
            FM_DEBUG("  BEST:\n"
                     "    family: %s [%s]\n"
                     "    weight: %d, style: %d\n"
                     "    stretch: %d\n"
                     "    pixelSize: %d\n"
                     "    pitch: %c\n"
                     "    encoding: %d\n",
                     desc.family->name.toLatin1().constData(),
                     desc.foundry->name.isEmpty() ? "-- none --" : desc.foundry->name.toLatin1().constData(),
                     desc.style->key.weight, desc.style->key.style,
                     desc.style->key.stretch, desc.size ? desc.size->pixelSize : 0xffff,
#ifdef Q_WS_X11
                     desc.encoding->pitch, desc.encoding->encoding
#else
                     'p', 0
#endif
                );

            fe = loadEngine(script, fp, request, desc.family, desc.foundry, desc.style
#ifdef Q_WS_X11
                            , desc.size, desc.encoding, (force_encoding_id >= 0)
#endif
#ifdef Q_WS_QWS
                            , desc.size
#endif
                );
        } else {
            FM_DEBUG("  NO MATCH FOUND\n");
        }
        if (fe)
            initFontDef(desc, request, &fe->fontDef);
    }

    if (fe) {
        if (fp) {
            QFontDef def = request;
            if (def.family.isEmpty()) {
                def.family = fp->request.family;
                def.family = def.family.left(def.family.indexOf(','));
            }
            QFontCache::Key key(def, script
#if defined(Q_WS_X11)
                                , fp->screen
#endif
                );
            QFontCache::instance->insertEngine(key, fe);
        }

#if defined(Q_WS_X11) && !defined(QT_NO_FONTCONFIG)
        if (scriptRequiresOpenType(script)) {
            QOpenType *ot = fe->openType();
            if (!ot || !ot->supportsScript(script)) {
                FM_DEBUG("  OpenType support missing for script");
                fe = 0;
            }
        }
#endif
    }

    if (!fe) {
        if (!request.family.isEmpty())
            return 0;

        FM_DEBUG("returning box engine");

        fe = new QFontEngineBox(request.pixelSize);

        if (fp) {
            QFontCache::Key key(request, script
#if defined(Q_WS_X11)
                                , fp->screen
#endif
                );
            QFontCache::instance->insertEngine(key, fe);
        }
    }

    if (fp) {
#if defined(Q_WS_X11)
        fe->fontDef.pointSize = qt_pointSize(fe->fontDef.pixelSize, fp->dpi);
#elif defined(Q_WS_WIN)
        fe->fontDef.pointSize = qreal(fe->fontDef.pixelSize) * 72.0
                                / GetDeviceCaps(shared_dc,LOGPIXELSY);
#elif defined(Q_WS_MAC)
        fe->fontDef.pointSize = qt_mac_pointsize(fe->fontDef, fp->dpi);
#else
        fe->fontDef.pointSize = qreal(fe->fontDef.pixelSize); //####int(double(fe->fontDef.pixelSize) * 72.0 / 96.0);
#endif
    } else {
        fe->fontDef.pointSize = request.pointSize;
    }

    return fe;
}
#endif

static QString styleString(int weight, QFont::Style style)
{
    QString result;
    if (weight >= QFont::Black)
        result = QLatin1String("Black");
    else if (weight >= QFont::Bold)
        result = QLatin1String("Bold");
    else if (weight >= QFont::DemiBold)
        result = QLatin1String("Demi Bold");
    else if (weight < QFont::Normal)
        result = QLatin1String("Light");

    if (style == QFont::StyleItalic)
        result += QLatin1String(" Italic");
    else if (style == QFont::StyleOblique)
        result += QLatin1String(" Oblique");

    if (result.isEmpty())
        result = QLatin1String("Normal");

    return result.simplified();
}

QString QFontDatabase::styleString(const QFont &font)
{
    return ::styleString(font.weight(), font.style());
}

QString QFontDatabase::styleString(const QFontInfo &fontInfo)
{
    return ::styleString(fontInfo.weight(), fontInfo.style());
}


QFontDatabase::QFontDatabase()
{
    createDatabase();

    d = privateDb();
}

QList<QFontDatabase::WritingSystem> QFontDatabase::writingSystems() const
{
    ::load();
#ifdef Q_WS_X11
    ::checkSymbolFonts();
#endif

    QList<WritingSystem> 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;
}


QList<QFontDatabase::WritingSystem> QFontDatabase::writingSystems(const QString &family) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::load();
#ifdef Q_WS_X11
    ::checkSymbolFonts(familyName);
#endif

    QList<WritingSystem> 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;
}


QStringList QFontDatabase::families(WritingSystem writingSystem) const
{
    ::load();
#ifdef Q_WS_X11
    if (writingSystem != Any)
        ::checkSymbolFonts();
#endif

    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 += QLatin1String("]");
                }
                flist.append(str);
            }
        }
    }
    return flist;
}

QStringList QFontDatabase::styles(const QString &family) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() || ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++) {
                QtFontStyle::Key ke(foundry->styles[k]->key);
                ke.stretch = 0;
                allStyles.style(ke, true);
            }
        }
    }

    for (int i = 0; i < allStyles.count; i++)
        l.append(::styleString(allStyles.styles[i]->key.weight, (QFont::Style)allStyles.styles[i]->key.style));
    return l;
}

bool QFontDatabase::isFixedPitch(const QString &family,
                                 const QString &style) const
{
    Q_UNUSED(style);

    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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);
}

bool QFontDatabase::isBitmapScalable(const QString &family,
                                      const QString &style) const
{
    bool bitmapScalable = false;
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() || ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                if ((style.isEmpty() || foundry->styles[k]->key == styleKey)
                    && foundry->styles[k]->bitmapScalable && !foundry->styles[k]->smoothScalable) {
                    bitmapScalable = true;
                    goto end;
                }
        }
    }
 end:
    return bitmapScalable;
}


bool QFontDatabase::isSmoothlyScalable(const QString &family, const QString &style) const
{
    bool smoothScalable = false;
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() || ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                if ((style.isEmpty() || foundry->styles[k]->key == styleKey) && foundry->styles[k]->smoothScalable) {
                    smoothScalable = true;
                    goto end;
                }
        }
    }
 end:
    return smoothScalable;
}

bool  QFontDatabase::isScalable(const QString &family,
                                 const QString &style) const
{
    if (isSmoothlyScalable(family, style))
        return true;

    return isBitmapScalable(family, style);
}


QList<int> QFontDatabase::pointSizes(const QString &family,
                                           const QString &style)
{
#if defined(Q_WS_WIN)
    // windows and macosx are always smoothly scalable
    Q_UNUSED(family);
    Q_UNUSED(style);
    return standardSizes();
#else
    bool smoothScalable = false;
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::load(familyName);

    QtFontStyle::Key styleKey(style);

    QList<int> sizes;

    QtFontFamily *fam = d->family(familyName);
    if (!fam) return sizes;


#ifdef Q_WS_X11
    int dpi = QX11Info::appDpiY();
#else
    const int dpi = 72; // embedded
#endif

    for (int j = 0; j < fam->count; j++) {
        QtFontFoundry *foundry = fam->foundries[j];
        if (foundryName.isEmpty() || ucstricmp(foundry->name, foundryName) == 0) {
            QtFontStyle *style = foundry->style(styleKey);
            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 * dpi / 72.);
                    if (! sizes.contains(pointSize))
                        sizes.append(pointSize);
                }
            }
        }
    }
 end:
    if (smoothScalable)
        return standardSizes();

    qSort(sizes);
    return sizes;
#endif
}

QFont QFontDatabase::font(const QString &family, const QString &style,
                           int pointSize) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::load(familyName);

    QtFontFoundry allStyles(foundryName);
    QtFontFamily *f = d->family(familyName);
    if (!f) return QApplication::font();

    for (int j = 0; j < f->count; j++) {
        QtFontFoundry *foundry = f->foundries[j];
        if (foundryName.isEmpty() || ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                allStyles.style(foundry->styles[k]->key, true);
        }
    }

    QtFontStyle::Key styleKey(style);
    QtFontStyle *s = bestStyle(&allStyles, styleKey);

    if (!s) // no styles found?
        return QApplication::font();
    QFont fnt(family, pointSize, s->key.weight);
    fnt.setStyle((QFont::Style)s->key.style);
    return fnt;
}


QList<int> QFontDatabase::smoothSizes(const QString &family,
                                            const QString &style)
{
#ifdef Q_WS_WIN
    Q_UNUSED(family);
    Q_UNUSED(style);
    return QFontDatabase::standardSizes();
#else
    bool smoothScalable = false;
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::load(familyName);

    QtFontStyle::Key styleKey(style);

    QList<int> sizes;

    QtFontFamily *fam = d->family(familyName);
    if (!fam)
        return sizes;

#ifdef Q_WS_X11
    int dpi = QX11Info::appDpiY();
#else
    const int dpi = 72; // embedded
#endif
    for (int j = 0; j < fam->count; j++) {
        QtFontFoundry *foundry = fam->foundries[j];
        if (foundryName.isEmpty() ||
             ucstricmp(foundry->name, foundryName) == 0) {
            QtFontStyle *style = foundry->style(styleKey);
            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 * dpi / 72.);
                    if (! sizes.contains(pointSize))
                        sizes.append(pointSize);
                }
            }
        }
    }
 end:
    if (smoothScalable)
        return QFontDatabase::standardSizes();

    qSort(sizes);
    return sizes;
#endif
}


QList<int> QFontDatabase::standardSizes()
{
    QList<int> ret;
    static const unsigned short standard[] =
        { 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 36, 48, 72, 0 };
    const unsigned short *sizes = standard;
    while (*sizes) ret << *sizes++;
    return ret;
}


bool QFontDatabase::italic(const QString &family, const QString &style) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() || ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                allStyles.style(foundry->styles[k]->key, true);
        }
    }

    QtFontStyle::Key styleKey(style);
    QtFontStyle *s = allStyles.style(styleKey);
    return s && s->key.style == QFont::StyleItalic;
}


bool QFontDatabase::bold(const QString &family,
                          const QString &style) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() ||
             ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                allStyles.style(foundry->styles[k]->key, true);
        }
    }

    QtFontStyle::Key styleKey(style);
    QtFontStyle *s = allStyles.style(styleKey);
    return s && s->key.weight >= QFont::Bold;
}


int QFontDatabase::weight(const QString &family,
                           const QString &style) const
{
    QString familyName, foundryName;
    parseFontName(family, foundryName, familyName);

    ::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() ||
             ucstricmp(foundry->name, foundryName) == 0) {
            for (int k = 0; k < foundry->count; k++)
                allStyles.style(foundry->styles[k]->key, true);
        }
    }

    QtFontStyle::Key styleKey(style);
    QtFontStyle *s = allStyles.style(styleKey);
    return s ? s->key.weight : -1;
}


QString QFontDatabase::writingSystemName(WritingSystem writingSystem)
{
    const char *name = 0;
    switch (writingSystem) {
    case Any:
        name = "Any";
        break;
    case Latin:
        name = "Latin";
        break;
    case Greek:
        name = "Greek";
        break;
    case Cyrillic:
        name = "Cyrillic";
        break;
    case Armenian:
        name = "Armenian";
        break;
    case Hebrew:
        name = "Hebrew";
        break;
    case Arabic:
        name = "Arabic";
        break;
    case Syriac:
        name = "Syriac";
        break;
    case Thaana:
        name = "Thaana";
        break;
    case Devanagari:
        name = "Devanagari";
        break;
    case Bengali:
        name = "Bengali";
        break;
    case Gurmukhi:
        name = "Gurmukhi";
        break;
    case Gujarati:
        name = "Gujarati";
        break;
    case Oriya:
        name = "Oriya";
        break;
    case Tamil:
        name = "Tamil";
        break;
    case Telugu:
        name = "Telugu";
        break;
    case Kannada:
        name = "Kannada";
        break;
    case Malayalam:
        name = "Malayalam";
        break;
    case Sinhala:
        name = "Sinhala";
        break;
    case Thai:
        name = "Thai";
        break;
    case Lao:
        name = "Lao";
        break;
    case Tibetan:
        name = "Tibetan";
        break;
    case Myanmar:
        name = "Myanmar";
        break;
    case Georgian:
        name = "Georgian";
        break;
    case Khmer:
        name = "Khmer";
        break;
    case SimplifiedChinese:
        name = "Simplified Chinese";
        break;
    case TraditionalChinese:
        name = "Traditional Chinese";
        break;
    case Japanese:
        name = "Japanese";
        break;
    case Korean:
        name = "Korean";
        break;
    case Vietnamese:
        name = "Vietnamese";
        break;
    case Symbol:
        name = "Symbol";
        break;
    case Ogham:
        name = "Ogham";
        break;
    case Runic:
        name = "Runic";
        break;
    default:
        Q_ASSERT_X(false, "QFontDatabase::writingSystemName", "invalid 'writingSystem' parameter");
        break;
    }
    return qApp ? qApp->translate("QFont", name) : QString::fromLatin1(name);
}


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(0x0402);
        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(0x3050);
        sample += QChar(0x3060);
        sample += QChar(0x30b0);
        sample += QChar(0x30c0);
        break;
    case Korean:
        sample += QChar(0xac00);
        sample += QChar(0xac11);
        sample += QChar(0xac1a);
        sample += QChar(0xac2f);
        break;
    case Vietnamese:
        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;
    default:
        break;
    }
    return sample;
}


void QFontDatabase::parseFontName(const QString &name, QString &foundry, QString &family)
{
    ::parseFontName(name, foundry, family);
}

void QFontDatabase::createDatabase()
{ initializeDb(); }

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;
}

int QFontDatabase::addApplicationFont(const QString &fileName)
{
    QByteArray data;
    QFile f(fileName);
    if (!(f.fileEngine()->fileFlags(QAbstractFileEngine::FlagsMask) & QAbstractFileEngine::LocalDiskFlag)) {
        if (!f.open(QIODevice::ReadOnly))
            return -1;
        data = f.readAll();
    }
    return privateDb()->addAppFont(data, fileName);
}

int QFontDatabase::addApplicationFontFromData(const QByteArray &fontData)
{
    return privateDb()->addAppFont(fontData, QString() /* fileName */);
}

QStringList QFontDatabase::applicationFontFamilies(int id)
{
    return privateDb()->applicationFonts.value(id).families;
}

#include "qfontdatabase.moc"

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