qfontdatabase_mac.cpp File Reference

#include <private/qt_mac_p.h>
#include "qfontengine_p.h"
#include <qfile.h>
#include <qabstractfileengine.h>
#include <stdlib.h>
#include <qendian.h>
#include <private/qfontengine_coretext_p.h>
#include <private/qfontengine_mac_p.h>

Go to the source code of this file.

Functions
static void	initializeDb ()
static void	initWritingSystems (QtFontFamily *family, ATSFontRef atsFont)
static void	load (const QString &=QString(), int=-1)
static QFontEngine *	loadFromDatabase (QFontDef &req, const QFontPrivate *d)
int	qt_mac_pixelsize (const QFontDef &def, int dpi)
int	qt_mac_pointsize (const QFontDef &def, int dpi)
static void	registerFont (QFontDatabasePrivate::ApplicationFont *fnt)
static const char *	styleHint (const QFontDef &request)
static float	weightToFloat (unsigned int weight)

Function Documentation

initializeDb()

static void initializeDb ( )

static

Definition at line 129 of file qfontdatabase_mac.cpp.

Referenced by QFontDatabase::createDatabase(), load(), and loadFromDatabase().

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

#if defined(QT_MAC_USE_COCOA) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
    QCFType<CTFontCollectionRef> collection = CTFontCollectionCreateFromAvailableFonts(0);
    if(!collection)
        return;
    QCFType<CFArrayRef> fonts = CTFontCollectionCreateMatchingFontDescriptors(collection);
    if(!fonts)
        return;
    QString foundry_name = "CoreText";
    const int numFonts = CFArrayGetCount(fonts);
    for(int i = 0; i < numFonts; ++i) {
        CTFontDescriptorRef font = (CTFontDescriptorRef)CFArrayGetValueAtIndex(fonts, i);
        QCFString family_name = (CFStringRef)CTFontDescriptorCopyLocalizedAttribute(font, kCTFontFamilyNameAttribute, NULL);
        QCFString style_name = (CFStringRef)CTFontDescriptorCopyLocalizedAttribute(font, kCTFontStyleNameAttribute, NULL);
        QtFontFamily *family = db->family(family_name, true);

        if (QCFType<CFArrayRef> languages = (CFArrayRef) CTFontDescriptorCopyAttribute(font, kCTFontLanguagesAttribute)) {
            CFIndex length = CFArrayGetCount(languages);
            for (int i = 1; i < LanguageCount; ++i) {
                if (!languageForWritingSystem[i])
                    continue;
                QCFString lang = CFStringCreateWithCString(NULL, languageForWritingSystem[i], kCFStringEncodingASCII);
                if (CFArrayContainsValue(languages, CFRangeMake(0, length), lang))
                    family->writingSystems[i] = QtFontFamily::Supported;
            }
        }

        QtFontFoundry *foundry = family->foundry(foundry_name, true);

        QtFontStyle::Key styleKey;
        QString styleName = style_name;
        if(QCFType<CFDictionaryRef> styles = (CFDictionaryRef)CTFontDescriptorCopyAttribute(font, kCTFontTraitsAttribute)) {
            if(CFNumberRef weight = (CFNumberRef)CFDictionaryGetValue(styles, kCTFontWeightTrait)) {
                Q_ASSERT(CFNumberIsFloatType(weight));
                double d;
                if(CFNumberGetValue(weight, kCFNumberDoubleType, &d)) {
                    //qDebug() << "BOLD" << (QString)family_name << d;
                    styleKey.weight = (d > 0.0) ? QFont::Bold : QFont::Normal;
                }
            }
            if(CFNumberRef italic = (CFNumberRef)CFDictionaryGetValue(styles, kCTFontSlantTrait)) {
                Q_ASSERT(CFNumberIsFloatType(italic));
                double d;
                if(CFNumberGetValue(italic, kCFNumberDoubleType, &d)) {
                    //qDebug() << "ITALIC" << (QString)family_name << d;
                    if (d > 0.0)
                        styleKey.style = QFont::StyleItalic;
                }
            }
        }

        QtFontStyle *style = foundry->style(styleKey, styleName, true);
        style->smoothScalable = true;
        if(QCFType<CFNumberRef> size = (CFNumberRef)CTFontDescriptorCopyAttribute(font, kCTFontSizeAttribute)) {
            //qDebug() << "WHEE";
            int pixel_size=0;
            if(CFNumberIsFloatType(size)) {
                double d;
                CFNumberGetValue(size, kCFNumberDoubleType, &d);
                pixel_size = d;
            } else {
                CFNumberGetValue(size, kCFNumberIntType, &pixel_size);
            }
            //qDebug() << "SIZE" << (QString)family_name << pixel_size;
            if(pixel_size)
                style->pixelSize(pixel_size, true);
        } else {
            //qDebug() << "WTF?";
        }
    }
} else 
#endif
    {
#ifndef QT_MAC_USE_COCOA
        FMFontIterator it;
        if (!FMCreateFontIterator(0, 0, kFMUseGlobalScopeOption, &it)) {
            while (true) {
                FMFont fmFont;
                if (FMGetNextFont(&it, &fmFont) != noErr)
                    break;

                FMFontFamily fmFamily;
                FMFontStyle fmStyle;
                QString familyName;

                QtFontStyle::Key styleKey;

                ATSFontRef atsFont = FMGetATSFontRefFromFont(fmFont);

                if (!FMGetFontFamilyInstanceFromFont(fmFont, &fmFamily, &fmStyle)) {
                    { //sanity check the font, and see if we can use it at all! --Sam
                        ATSUFontID fontID;
                        if(ATSUFONDtoFontID(fmFamily, 0, &fontID) != noErr)
                            continue;
                    }

                    if (fmStyle & ::italic)
                        styleKey.style = QFont::StyleItalic;
                    if (fmStyle & ::bold)
                        styleKey.weight = QFont::Bold;

                    ATSFontFamilyRef familyRef = FMGetATSFontFamilyRefFromFontFamily(fmFamily);
                    QCFString cfFamilyName;;
                    ATSFontFamilyGetName(familyRef, kATSOptionFlagsDefault, &cfFamilyName);
                    familyName = cfFamilyName;
                } else {
                    QCFString cfFontName;
                    ATSFontGetName(atsFont, kATSOptionFlagsDefault, &cfFontName);
                    familyName = cfFontName;
                    quint16 macStyle = 0;
                    {
                        uchar data[4];
                        ByteCount len = 4;
                        if (ATSFontGetTable(atsFont, MAKE_TAG('h', 'e', 'a', 'd'), 44, 4, &data, &len) == noErr)
                            macStyle = qFromBigEndian<quint16>(data);
                    }
                    if (macStyle & 1)
                        styleKey.weight = QFont::Bold;
                    if (macStyle & 2)
                        styleKey.style = QFont::StyleItalic;
                }

                QtFontFamily *family = db->family(familyName, true);
                QtFontFoundry *foundry = family->foundry(QString(), true);
                QtFontStyle *style = foundry->style(styleKey, QString(), true);
                style->pixelSize(0, true);
                style->smoothScalable = true;

                initWritingSystems(family, atsFont);
            }
            FMDisposeFontIterator(&it);
        }
#endif
    }

}

initWritingSystems()

static void initWritingSystems ( QtFontFamily *  family, ATSFontRef  atsFont  )

static

Definition at line 57 of file qfontdatabase_mac.cpp.

Referenced by initializeDb().

{
    ByteCount length = 0;
    if (ATSFontGetTable(atsFont, MAKE_TAG('O', 'S', '/', '2'), 0, 0, 0, &length) != noErr)
        return;
    QVarLengthArray<uchar> os2Table(length);
    if (length < 86
        || ATSFontGetTable(atsFont, MAKE_TAG('O', 'S', '/', '2'), 0, length, os2Table.data(), &length) != noErr)
        return;

    // See also qfontdatabase_win.cpp, offsets taken from OS/2 table in the TrueType spec
    quint32 unicodeRange[4] = {
        qFromBigEndian<quint32>(os2Table.data() + 42),
        qFromBigEndian<quint32>(os2Table.data() + 46),
        qFromBigEndian<quint32>(os2Table.data() + 50),
        qFromBigEndian<quint32>(os2Table.data() + 54)
    };
    quint32 codePageRange[2] = { qFromBigEndian<quint32>(os2Table.data() + 78), qFromBigEndian<quint32>(os2Table.data() + 82) };
    QList<QFontDatabase::WritingSystem> systems = qt_determine_writing_systems_from_truetype_bits(unicodeRange, codePageRange);
#if 0
    QCFString name;
    ATSFontGetName(atsFont, kATSOptionFlagsDefault, &name);
    qDebug() << systems.count() << "writing systems for" << QString(name);
qDebug() << "first char" << hex << unicodeRange[0];
    for (int i = 0; i < systems.count(); ++i)
        qDebug() << QFontDatabase::writingSystemName(systems.at(i));
#endif
    for (int i = 0; i < systems.count(); ++i)
        family->writingSystems[systems.at(i)] = QtFontFamily::Supported;
}

load()

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

inlinestatic

Definition at line 272 of file qfontdatabase_mac.cpp.

{
    initializeDb();
}

loadFromDatabase()

static QFontEngine* loadFromDatabase ( QFontDef &  req, const QFontPrivate *  d  )

static

Definition at line 303 of file qfontdatabase_mac.cpp.

Referenced by QFontDatabase::load().

{
#if defined(QT_MAC_USE_COCOA)
    QCFString fontName = NULL;
#else
    ATSFontFamilyRef familyRef = 0;
    ATSFontRef fontRef = 0;
#endif

    QStringList family_list = familyList(req);

    const char *stylehint = styleHint(req);
    if (stylehint)
        family_list << QLatin1String(stylehint);

    // add QFont::defaultFamily() to the list, for compatibility with previous versions
    family_list << QApplication::font().defaultFamily();

    QMutexLocker locker(fontDatabaseMutex());
    QFontDatabasePrivate *db = privateDb();
    if (!db->count)
        initializeDb();
    for (int i = 0; i < family_list.size(); ++i) {
        for (int k = 0; k < db->count; ++k) {
            if (db->families[k]->name.compare(family_list.at(i), Qt::CaseInsensitive) == 0) {
#if defined(QT_MAC_USE_COCOA)
                CFStringRef familyName = QCFString::toCFStringRef(db->families[k]->name);
                QCFType<CTFontDescriptorRef> descriptor = CTFontDescriptorCreateWithAttributes(
                                    QCFType<CFDictionaryRef>(CFDictionaryCreate(kCFAllocatorDefault,
                                        (const void**)&kCTFontFamilyNameAttribute,
                                        (const void**)&familyName, 1,
                                        &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks)));
                CFRelease(familyName);
                QCFType<CTFontRef> ctFont = CTFontCreateWithFontDescriptor(descriptor, 0, NULL);
                if (ctFont) {
                    fontName = CTFontCopyFullName(ctFont);
                    goto found;
                }
#else
                familyRef = ATSFontFamilyFindFromName(QCFString(db->families[k]->name), kATSOptionFlagsDefault);
                if (familyRef) {
                    fontRef = ATSFontFindFromName(QCFString(db->families[k]->name), kATSOptionFlagsDefault);
                    goto found;
                }
#endif
            }
        }
    }
found:
#ifdef QT_MAC_USE_COCOA
    if (fontName)
        return new QCoreTextFontEngineMulti(fontName, req, d->kerning);
#else
    if (familyRef) {
        QCFString actualName;
        if (ATSFontFamilyGetName(familyRef, kATSOptionFlagsDefault, &actualName) == noErr)
            req.family = actualName;
        return new QFontEngineMacMulti(familyRef, fontRef, req, d->kerning);
    }
#endif
    return NULL;
}

qt_mac_pixelsize()

int qt_mac_pixelsize	(	const QFontDef &	def,
		int	dpi
	)

Definition at line 64 of file qfont_mac.cpp.

Referenced by QFontDatabase::load().

{
    float ret;
    if(def.pixelSize == -1)
        ret = def.pointSize *  dpi / qt_mac_defaultDpi_x();
    else
        ret = def.pixelSize;
    return qRound(ret);
}

qt_mac_pointsize()

int qt_mac_pointsize	(	const QFontDef &	def,
		int	dpi
	)

Definition at line 73 of file qfont_mac.cpp.

Referenced by QFontDatabase::load().

{
    float ret;
    if(def.pointSize < 0)
        ret = def.pixelSize * qt_mac_defaultDpi_x() / float(dpi);
    else
        ret = def.pointSize;
    return qRound(ret);
}

registerFont()

static void registerFont ( QFontDatabasePrivate::ApplicationFont *  fnt )

static

Definition at line 440 of file qfontdatabase_mac.cpp.

Referenced by QFontDatabasePrivate::addAppFont().

{
    ATSFontContainerRef handle;
    OSStatus e  = noErr;

    if(fnt->data.isEmpty()) {
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_5) {
                FSRef ref;
                if(qt_mac_create_fsref(fnt->fileName, &ref) != noErr)
                    return;

                ATSFontActivateFromFileReference(&ref, kATSFontContextLocal, kATSFontFormatUnspecified, 0, kATSOptionFlagsDefault, &handle);
        } else 
#endif
        {
#ifndef Q_WS_MAC64
                FSSpec spec;
                if(qt_mac_create_fsspec(fnt->fileName, &spec) != noErr)
                    return;

                e = ATSFontActivateFromFileSpecification(&spec, kATSFontContextLocal, kATSFontFormatUnspecified,
                                                   0, kATSOptionFlagsDefault, &handle);
#endif
        }
    } else {
        e = ATSFontActivateFromMemory((void *)fnt->data.constData(), fnt->data.size(), kATSFontContextLocal,
                                           kATSFontFormatUnspecified, 0, kATSOptionFlagsDefault, &handle);

        fnt->data = QByteArray();
    }

    if(e != noErr)
        return;

    ItemCount fontCount = 0;
    e = ATSFontFindFromContainer(handle, kATSOptionFlagsDefault, 0, 0, &fontCount);
    if(e != noErr)
        return;

    QVarLengthArray<ATSFontRef> containedFonts(fontCount);
    e = ATSFontFindFromContainer(handle, kATSOptionFlagsDefault, fontCount, containedFonts.data(), &fontCount);
    if(e != noErr)
        return;

    fnt->families.clear();
#if defined(QT_MAC_USE_COCOA)
    // Make sure that the family name set on the font matches what
    // kCTFontFamilyNameAttribute returns in initializeDb().
    // So far the best solution seems find the installed font
    // using CoreText and get the family name from it.
    // (ATSFontFamilyGetName appears to be the correct API, but also
    // returns the font display name.)
    for(int i = 0; i < containedFonts.size(); ++i) {
        QCFString fontPostScriptName;
        ATSFontGetPostScriptName(containedFonts[i], kATSOptionFlagsDefault, &fontPostScriptName);
        QCFType<CTFontDescriptorRef> font = CTFontDescriptorCreateWithNameAndSize(fontPostScriptName, 14);
        QCFString familyName = (CFStringRef)CTFontDescriptorCopyAttribute(font, kCTFontFamilyNameAttribute);
        fnt->families.append(familyName);
    }
#else
    for(int i = 0; i < containedFonts.size(); ++i) {
        QCFString family;
        ATSFontGetName(containedFonts[i], kATSOptionFlagsDefault, &family);
        fnt->families.append(family);
    }
#endif

    fnt->handle = handle;
}

styleHint()

static const char* styleHint ( const QFontDef &  request )

static

Definition at line 277 of file qfontdatabase_mac.cpp.

Referenced by loadFromDatabase().

{
    const char *stylehint = 0;
    switch (request.styleHint) {
    case QFont::SansSerif:
        stylehint = "Arial";
        break;
    case QFont::Serif:
        stylehint = "Times New Roman";
        break;
    case QFont::TypeWriter:
        stylehint = "Courier New";
        break;
    default:
        if (request.fixedPitch)
            stylehint = "Courier New";
        break;
    }
    return stylehint;
}

weightToFloat()

static float weightToFloat ( unsigned int  weight )

inlinestatic

Definition at line 298 of file qfontdatabase_mac.cpp.

{
    return (weight - 50) / 100.0;
}