qfontdatabase_qws.cpp File Reference

#include "qdir.h"
#include "qscreen_qws.h"
#include "qwindowsystem_qws.h"
#include "qlibraryinfo.h"
#include "qabstractfileengine.h"
#include <QtCore/qsettings.h>
#include "qfontengine_ft_p.h"
#include <ft2build.h>
#include <FT_FREETYPE_H>
#include "qfontengine_qpf_p.h"
#include "private/qfactoryloader_p.h"
#include "private/qcore_unix_p.h"
#include "qabstractfontengine_qws.h"
#include "qabstractfontengine_p.h"
#include <qdatetime.h>
#include "qplatformdefs.h"
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>

Go to the source code of this file.

Macros
#define	X_SIZE(face, i)   ((face)->available_sizes[i].width << 6)
#define	Y_SIZE(face, i)   ((face)->available_sizes[i].height << 6)

Functions
static void	initializeDb ()
static void	load (const QString &=QString(), int=-1)
static QFontEngine *	loadEngine (int script, const QFontPrivate *fp, const QFontDef &request, QtFontFamily *family, QtFontFoundry *foundry, QtFontStyle *style, QtFontSize *size)
static QFontEngine *	loadSingleEngine (int script, const QFontPrivate *fp, const QFontDef &request, QtFontFamily *family, QtFontFoundry *foundry, QtFontStyle *style, QtFontSize *size)
	Q_GLOBAL_STATIC_WITH_ARGS (QFactoryLoader, loader,(QFontEngineFactoryInterface_iid, QLatin1String("/fontengines"), Qt::CaseInsensitive)) const quint8 DatabaseVersion
void	qt_applyFontDatabaseSettings (const QSettings &settings)
void	qt_qws_init_fontdb ()
QString	qws_fontCacheDir ()
static QString	qwsFontPath ()
static void	registerFont (QFontDatabasePrivate::ApplicationFont *fnt)

Macro Definition Documentation

X_SIZE

#define X_SIZE	(		face,
			i
	)		((face)->available_sizes[i].width << 6)

Definition at line 550 of file qfontdatabase_qws.cpp.

Y_SIZE

#define Y_SIZE	(		face,
			i
	)		((face)->available_sizes[i].height << 6)

Definition at line 551 of file qfontdatabase_qws.cpp.

Function Documentation

initializeDb()

static void initializeDb ( )

static

Warning

This function is not part of the public interface.

Definition at line 283 of file qfontdatabase_qws.cpp.

Referenced by load(), qt_applyFontDatabaseSettings(), qt_qws_init_fontdb(), and registerFont().

{
    QFontDatabasePrivate *db = privateDb();
    if (!db || db->count)
        return;

    QString fontpath = qwsFontPath();
#ifndef QT_FONTS_ARE_RESOURCES
    QString fontDirFile = fontpath + QLatin1String("/fontdir");

    if(!QFile::exists(fontpath)) {
        qFatal("QFontDatabase: Cannot find font directory %s - is Qt installed correctly?",
               fontpath.toLocal8Bit().constData());
    }

    const bool loaded = db->loadFromCache(fontpath);

    if (db->reregisterAppFonts) {
        db->reregisterAppFonts = false;
        for (int i = 0; i < db->applicationFonts.count(); ++i)
            if (!db->applicationFonts.at(i).families.isEmpty()) {
                registerFont(&db->applicationFonts[i]);
            }
    }

    if (loaded)
        return;

    QString dbFileName = qws_fontCacheDir() + QLatin1String("/fontdb");

    QFile binaryDb(dbFileName + QLatin1String(".tmp"));
    binaryDb.open(QIODevice::WriteOnly | QIODevice::Truncate);
    db->stream = new QDataStream(&binaryDb);
    *db->stream << DatabaseVersion << quint8(db->stream->version()) << fontpath;
//    qDebug() << "creating binary database at" << binaryDb.fileName();

    // Load in font definition file
    FILE* fontdef=fopen(fontDirFile.toLocal8Bit().constData(),"r");
    if (fontdef) {
        char buf[200]="";
        char name[200]="";
        char render[200]="";
        char file[200]="";
        char isitalic[10]="";
        char flags[10]="";
        do {
            fgets(buf,200,fontdef);
            if (buf[0] != '#') {
                int weight=50;
                int size=0;
                sscanf(buf,"%s %s %s %s %d %d %s",name,file,render,isitalic,&weight,&size,flags);
                QString filename;
                if (file[0] != '/')
                    filename.append(fontpath).append(QLatin1Char('/'));
                filename += QLatin1String(file);
                bool italic = isitalic[0] == 'y';
                bool smooth = QByteArray(flags).contains('s');
                if (file[0] && QFile::exists(filename))
                    db->addFont(QString::fromUtf8(name), /*foundry*/"", weight, italic, size/10, QFile::encodeName(filename), /*fileIndex*/ 0, smooth);
            }
        } while (!feof(fontdef));
        fclose(fontdef);
    }


    QDir dir(fontpath, QLatin1String("*.qpf"));
    for (int i=0; i<int(dir.count()); i++) {
        int u0 = dir[i].indexOf(QLatin1Char('_'));
        int u1 = dir[i].indexOf(QLatin1Char('_'), u0+1);
        int u2 = dir[i].indexOf(QLatin1Char('_'), u1+1);
        int u3 = dir[i].indexOf(QLatin1Char('.'), u1+1);
        if (u2 < 0) u2 = u3;

        QString familyname = dir[i].left(u0);
        int pixelSize = dir[i].mid(u0+1,u1-u0-1).toInt()/10;
        bool italic = dir[i].mid(u2-1,1) == QLatin1String("i");
        int weight = dir[i].mid(u1+1,u2-u1-1-(italic?1:0)).toInt();

        db->addFont(familyname, /*foundry*/ "qt", weight, italic, pixelSize, QFile::encodeName(dir.absoluteFilePath(dir[i])),
                    /*fileIndex*/ 0, /*antialiased*/ true);
    }

#ifndef QT_NO_FREETYPE
    dir.setNameFilters(QStringList() << QLatin1String("*.ttf")
                       << QLatin1String("*.ttc") << QLatin1String("*.pfa")
                       << QLatin1String("*.pfb"));
    dir.refresh();
    for (int i = 0; i < int(dir.count()); ++i) {
        const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
//        qDebug() << "looking at" << file;
        db->addTTFile(file);
    }
#endif

#ifndef QT_NO_QWS_QPF2
    dir.setNameFilters(QStringList() << QLatin1String("*.qpf2"));
    dir.refresh();
    for (int i = 0; i < int(dir.count()); ++i) {
        const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
//        qDebug() << "looking at" << file;
        db->addQPF2File(file);
    }
#endif

#else //QT_FONTS_ARE_RESOURCES
#ifdef QFONTDATABASE_DEBUG
    {
        QResource fontdir(fontpath);
        FriendlyResource *fr = static_cast<FriendlyResource*>(&fontdir);
        qDebug() << "fontdir" << fr->isValid() << fr->isDir() << fr->children();

    }
#endif
#ifndef QT_NO_QWS_QPF2
    QDir dir(fontpath, QLatin1String("*.qpf2"));
    for (int i = 0; i < int(dir.count()); ++i) {
        const QByteArray file = QFile::encodeName(dir.absoluteFilePath(dir[i]));
        //qDebug() << "looking at" << file;
        db->addQPF2File(file);
    }
#endif
#endif //QT_FONTS_ARE_RESOURCES


#ifdef QFONTDATABASE_DEBUG
    // print the database
    for (int f = 0; f < db->count; f++) {
        QtFontFamily *family = db->families[f];
        FD_DEBUG("'%s' %s", qPrintable(family->name), (family->fixedPitch ? "fixed" : ""));
#if 0
        for (int i = 0; i < QFont::LastPrivateScript; ++i) {
            FD_DEBUG("\t%s: %s", qPrintable(QFontDatabase::scriptName((QFont::Script) i)),
                     ((family->scripts[i] & QtFontFamily::Supported) ? "Supported" :
                      (family->scripts[i] & QtFontFamily::UnSupported) == QtFontFamily::UnSupported ?
                      "UnSupported" : "Unknown"));
        }
#endif

        for (int fd = 0; fd < family->count; fd++) {
            QtFontFoundry *foundry = family->foundries[fd];
            FD_DEBUG("\t\t'%s'", qPrintable(foundry->name));
            for (int s = 0; s < foundry->count; s++) {
                QtFontStyle *style = foundry->styles[s];
                FD_DEBUG("\t\t\tstyle: style=%d weight=%d\n"
                         "\t\t\tstretch=%d",
                         style->key.style, style->key.weight,
                         style->key.stretch);
                if (style->smoothScalable)
                    FD_DEBUG("\t\t\t\tsmooth scalable");
                else if (style->bitmapScalable)
                    FD_DEBUG("\t\t\t\tbitmap scalable");
                if (style->pixelSizes) {
                    FD_DEBUG("\t\t\t\t%d pixel sizes",  style->count);
                    for (int z = 0; z < style->count; ++z) {
                        QtFontSize *size = style->pixelSizes + z;
                        FD_DEBUG("\t\t\t\t  size %5d",
                                  size->pixelSize);
                    }
                }
            }
        }
    }
#endif // QFONTDATABASE_DEBUG

#ifndef QT_NO_LIBRARY
    QStringList pluginFoundries = loader()->keys();
//    qDebug() << "plugin foundries:" << pluginFoundries;
    for (int i = 0; i < pluginFoundries.count(); ++i) {
        const QString foundry(pluginFoundries.at(i));

        QFontEngineFactoryInterface *factory = qobject_cast<QFontEngineFactoryInterface *>(loader()->instance(foundry));
        if (!factory) {
            qDebug() << "Could not load plugin for foundry" << foundry;
            continue;
        }

        QList<QFontEngineInfo> fonts = factory->availableFontEngines();
        for (int i = 0; i < fonts.count(); ++i) {
            QFontEngineInfo info = fonts.at(i);

            int weight = info.weight();
            if (weight <= 0)
                weight = QFont::Normal;

            db->addFont(info.family(), foundry.toLatin1().constData(),
                        weight, info.style() != QFont::StyleNormal,
                        qRound(info.pixelSize()), /*file*/QByteArray(),
                        /*fileIndex*/0, /*antiAliased*/true,
                        info.writingSystems());
        }
    }
#endif

#ifndef QT_FONTS_ARE_RESOURCES
    // the empty string/familyname signifies the end of the font list.
    *db->stream << QString();
#endif
    {
        bool coveredWritingSystems[QFontDatabase::WritingSystemsCount] = { 0 };

        db->fallbackFamilies.clear();

        for (int i = 0; i < db->count; ++i) {
            QtFontFamily *family = db->families[i];
            bool add = false;
            if (family->count == 0)
                continue;
            if (family->bogusWritingSystems)
                continue;
            for (int ws = 1; ws < QFontDatabase::WritingSystemsCount; ++ws) {
                if (coveredWritingSystems[ws])
                    continue;
                if (family->writingSystems[ws] & QtFontFamily::Supported) {
                    coveredWritingSystems[ws] = true;
                    add = true;
                }
            }
            if (add)
                db->fallbackFamilies << family->name;
        }
        //qDebug() << "fallbacks on the server:" << db->fallbackFamilies;
#ifndef QT_FONTS_ARE_RESOURCES
        *db->stream << db->fallbackFamilies;
#endif
    }
#ifndef QT_FONTS_ARE_RESOURCES
    delete db->stream;
    db->stream = 0;
    QFile::remove(dbFileName);
    binaryDb.rename(dbFileName);
#endif
}

load()

static void load ( const QString &  = QString(), int  = -1  )

inlinestatic

Definition at line 539 of file qfontdatabase_qws.cpp.

{
    initializeDb();
}

loadEngine()

static QFontEngine* loadEngine ( int  script, const QFontPrivate *  fp, const QFontDef &  request, QtFontFamily *  family, QtFontFoundry *  foundry, QtFontStyle *  style, QtFontSize *  size  )

static

Definition at line 697 of file qfontdatabase_qws.cpp.

Referenced by registerFont().

{
    QScopedPointer<QFontEngine> engine(loadSingleEngine(script, fp, request, family, foundry,
                                       style, size));
#ifndef QT_NO_QWS_QPF
    if (!engine.isNull()
        && script == QUnicodeTables::Common
        && !(request.styleStrategy & QFont::NoFontMerging) && !engine->symbol) {

        QStringList fallbacks = privateDb()->fallbackFamilies;

        if (family && !family->fallbackFamilies.isEmpty())
            fallbacks = family->fallbackFamilies;

        QFontEngine *fe = new QFontEngineMultiQWS(engine.data(), script, fallbacks);
        engine.take();
        engine.reset(fe);
    }
#endif
    return engine.take();
}

loadSingleEngine()

static QFontEngine* loadSingleEngine ( int  script, const QFontPrivate *  fp, const QFontDef &  request, QtFontFamily *  family, QtFontFoundry *  foundry, QtFontStyle *  style, QtFontSize *  size  )

static

is this the best way????

Definition at line 557 of file qfontdatabase_qws.cpp.

Referenced by loadEngine().

{
    Q_UNUSED(script);
    Q_UNUSED(fp);
#ifdef QT_NO_FREETYPE
    Q_UNUSED(foundry);
#endif
#ifdef QT_NO_QWS_QPF
    Q_UNUSED(family);
#endif
    Q_ASSERT(size);

    int pixelSize = size->pixelSize;
    if (!pixelSize || (style->smoothScalable && pixelSize == SMOOTH_SCALABLE))
        pixelSize = request.pixelSize;

#ifndef QT_NO_QWS_QPF2
    if (foundry->name == QLatin1String("prerendered")) {
#ifdef QT_FONTS_ARE_RESOURCES
        QResource res(QLatin1String(size->fileName.constData()));
        if (res.isValid()) {
            QFontEngineQPF *fe = new QFontEngineQPF(request, res.data(), res.size());
            if (fe->isValid())
                return fe;
            delete fe;
            qDebug() << "fontengine is not valid! " << size->fileName;
        } else {
            qDebug() << "Resource not valid" << size->fileName;
        }
#else
        int f = ::open(size->fileName, O_RDONLY, 0);
        if (f >= 0) {
            QFontEngineQPF *fe = new QFontEngineQPF(request, f);
            if (fe->isValid())
                return fe;
            delete fe; // will close f
            qDebug() << "fontengine is not valid!";
        }
#endif
    } else
#endif
    if ( foundry->name != QLatin1String("qt") ) { 
        QString file = QFile::decodeName(size->fileName);

        QFontDef def = request;
        def.pixelSize = pixelSize;

#ifdef QT_NO_QWS_SHARE_FONTS
        bool shareFonts = false;
#else
        static bool dontShareFonts = !qgetenv("QWS_NO_SHARE_FONTS").isEmpty();
        bool shareFonts = !dontShareFonts;
#endif

        QScopedPointer<QFontEngine> engine;

#ifndef QT_NO_LIBRARY
        QFontEngineFactoryInterface *factory = qobject_cast<QFontEngineFactoryInterface *>(loader()->instance(foundry->name));
        if (factory) {
            QFontEngineInfo info;
            info.setFamily(request.family);
            info.setPixelSize(request.pixelSize);
            info.setStyle(QFont::Style(request.style));
            info.setWeight(request.weight);
            // #### antialiased

            QAbstractFontEngine *customEngine = factory->create(info);
            if (customEngine) {
                engine.reset(new QProxyFontEngine(customEngine, def));

                if (shareFonts) {
                    QVariant hint = customEngine->fontProperty(QAbstractFontEngine::CacheGlyphsHint);
                    if (hint.isValid())
                        shareFonts = hint.toBool();
                    else
                        shareFonts = (pixelSize < 64);
                }
            }
        }
#endif // QT_NO_LIBRARY
        if ((engine.isNull() && !file.isEmpty() && QFile::exists(file)) || privateDb()->isApplicationFont(file)) {
            QFontEngine::FaceId faceId;
            faceId.filename = file.toLocal8Bit();
            faceId.index = size->fileIndex;

#ifndef QT_NO_FREETYPE

            QScopedPointer<QFontEngineFT> fte(new QFontEngineFT(def));
            bool antialias = style->antialiased && !(request.styleStrategy & QFont::NoAntialias);
            if (fte->init(faceId, antialias,
                          antialias ? QFontEngineFT::Format_A8 : QFontEngineFT::Format_Mono)) {
#ifdef QT_NO_QWS_QPF2
                return fte.take();
#else
                // try to distinguish between bdf and ttf fonts we can pre-render
                // and don't try to share outline fonts
                shareFonts = shareFonts
                             && !fte->defaultGlyphs()->outline_drawing
                             && !fte->getSfntTable(MAKE_TAG('h', 'e', 'a', 'd')).isEmpty();
                engine.reset(fte.take());
#endif
            }
#endif // QT_NO_FREETYPE
        }
        if (!engine.isNull()) {
#if !defined(QT_NO_QWS_QPF2) && !defined(QT_FONTS_ARE_RESOURCES)
            if (shareFonts) {
                QScopedPointer<QFontEngineQPF> fe(new QFontEngineQPF(def, -1, engine.data()));
                engine.take();
                if (fe->isValid())
                    return fe.take();
                qWarning("Initializing QFontEngineQPF failed for %s", qPrintable(file));
                engine.reset(fe->takeRenderingEngine());
            }
#endif
            return engine.take();
        }
    } else
    {
#ifndef QT_NO_QWS_QPF
        QString fn = qwsFontPath();
        fn += QLatin1Char('/');
        fn += family->name.toLower()
              + QLatin1Char('_') + QString::number(pixelSize*10)
              + QLatin1Char('_') + QString::number(style->key.weight)
              + (style->key.style == QFont::StyleItalic ?
                 QLatin1String("i.qpf") : QLatin1String(".qpf"));
        //###rotation ###

        QFontEngine *fe = new QFontEngineQPF1(request, fn);
        return fe;
#endif // QT_NO_QWS_QPF
    }
    return new QFontEngineBox(pixelSize);
}

Q_GLOBAL_STATIC_WITH_ARGS()

Q_GLOBAL_STATIC_WITH_ARGS	(	QFactoryLoader	,
		loader	,
		(QFontEngineFactoryInterface_iid, QLatin1String("/fontengines"), Qt::CaseInsensitive)
	)		const

qt_applyFontDatabaseSettings()

void qt_applyFontDatabaseSettings

(

const QSettings &

settings

)

Definition at line 524 of file qfontdatabase_qws.cpp.

{
    initializeDb();
    QFontDatabasePrivate *db = privateDb();
    for (int i = 0; i < db->count; ++i) {
        QtFontFamily *family = db->families[i];
        if (settings.contains(family->name))
            family->fallbackFamilies = settings.value(family->name).toStringList();
    }

    if (settings.contains(QLatin1String("Global Fallbacks")))
        db->fallbackFamilies = settings.value(QLatin1String("Global Fallbacks")).toStringList();
}

qt_qws_init_fontdb()

void qt_qws_init_fontdb

(

)

Definition at line 517 of file qfontdatabase_qws.cpp.

Referenced by QWSServerPrivate::initServer().

{
    initializeDb();
}

qws_fontCacheDir()

QString qws_fontCacheDir

(

)

Definition at line 231 of file qfontengine_qpf.cpp.

Referenced by QFontDatabasePrivate::addQPF2File(), QFontEngineQPF::cleanUpAfterClientCrash(), cleanupFontsDir(), initializeDb(), QFontDatabasePrivate::loadFromCache(), and QFontEngineQPF::QFontEngineQPF().

{
    QString dir;
#if defined(Q_WS_QWS)
    extern QString qws_dataDir();
    dir = qws_dataDir();
#else
    dir = QDir::tempPath();
#endif
    dir.append(QLatin1String("/fonts/"));
    QDir qd(dir);
    if (!qd.exists() && !qd.mkpath(dir))
        dir = QDir::tempPath();
    return dir;
}

qwsFontPath()

static QString qwsFontPath ( )

static

Warning

This function is not part of the public interface.

Definition at line 252 of file qfontdatabase_qws.cpp.

Referenced by initializeDb(), and loadSingleEngine().

{
    QString fontpath = QString::fromLocal8Bit(qgetenv("QT_QWS_FONTDIR"));
    if (fontpath.isEmpty()) {
#ifdef QT_FONTS_ARE_RESOURCES
        fontpath = QLatin1String(":/qt/fonts");
#else
#ifndef QT_NO_SETTINGS
        fontpath = QLibraryInfo::location(QLibraryInfo::LibrariesPath);
        fontpath += QLatin1String("/fonts");
#else
        fontpath = QLatin1String("/lib/fonts");
#endif
#endif //QT_FONTS_ARE_RESOURCES
    }

    return fontpath;
}

registerFont()

static void registerFont ( QFontDatabasePrivate::ApplicationFont *  fnt )

static

Definition at line 722 of file qfontdatabase_qws.cpp.

Referenced by QFontDatabasePrivate::addQPF2File(), and initializeDb().

{
    QFontDatabasePrivate *db = privateDb();
#ifdef QT_NO_FREETYPE
    Q_UNUSED(fnt);
#else
    fnt->families = db->addTTFile(QFile::encodeName(fnt->fileName), fnt->data);
    db->fallbackFamilies += fnt->families;
#endif
    db->reregisterAppFonts = true;
}