src/gui/text/qfontdatabase_mac.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/text/qfontdatabase_mac.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,535 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <private/qt_mac_p.h>
+#include "qfontengine_p.h"
+#include <qfile.h>
+#include <qabstractfileengine.h>
+#include <stdlib.h>
+#include <qendian.h>
+
+QT_BEGIN_NAMESPACE
+
+int qt_mac_pixelsize(const QFontDef &def, int dpi); //qfont_mac.cpp
+int qt_mac_pointsize(const QFontDef &def, int dpi); //qfont_mac.cpp
+
+#ifndef QT_MAC_USE_COCOA
+static void initWritingSystems(QtFontFamily *family, ATSFontRef atsFont)
+{
+    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 = determineWritingSystemsFromTrueTypeBits(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;
+}
+#endif
+
+static void initializeDb()
+{
+    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)CTFontDescriptorCopyAttribute(font, kCTFontFamilyNameAttribute);
+        QtFontFamily *family = db->family(family_name, true);
+        for(int ws = 1; ws < QFontDatabase::WritingSystemsCount; ++ws)
+            family->writingSystems[ws] = QtFontFamily::Supported;
+        QtFontFoundry *foundry = family->foundry(foundry_name, true);
+
+        QtFontStyle::Key styleKey;
+        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, 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, true);
+                style->pixelSize(0, true);
+                style->smoothScalable = true;
+
+                initWritingSystems(family, atsFont);
+            }
+            FMDisposeFontIterator(&it);
+        }
+#endif
+    }
+
+}
+
+static inline void load(const QString & = QString(), int = -1)
+{
+    initializeDb();
+}
+
+static const char *styleHint(const QFontDef &request)
+{
+    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;
+}
+
+void QFontDatabase::load(const QFontPrivate *d, int script)
+{
+    // sanity checks
+    if(!qApp)
+        qWarning("QFont: Must construct a QApplication before a QFont");
+
+    Q_ASSERT(script >= 0 && script < QUnicodeTables::ScriptCount);
+    Q_UNUSED(script);
+
+    QFontDef req = d->request;
+    req.pixelSize = qt_mac_pixelsize(req, d->dpi);
+
+    // set the point size to 0 to get better caching
+    req.pointSize = 0;
+    QFontCache::Key key = QFontCache::Key(req, QUnicodeTables::Common, d->screen);
+
+    if(!(d->engineData = QFontCache::instance()->findEngineData(key))) {
+        d->engineData = new QFontEngineData;
+        QFontCache::instance()->insertEngineData(key, d->engineData);
+    } else {
+        d->engineData->ref.ref();
+    }
+    if(d->engineData->engine) // already loaded
+        return;
+
+    // set it to the actual pointsize, so QFontInfo will do the right thing
+    req.pointSize = qRound(qt_mac_pointsize(d->request, d->dpi));
+
+    QFontEngine *e = QFontCache::instance()->findEngine(key);
+    if(!e && qt_enable_test_font && req.family == QLatin1String("__Qt__Box__Engine__")) {
+        e = new QTestFontEngine(req.pixelSize);
+        e->fontDef = req;
+    }
+
+    if(e) {
+        e->ref.ref();
+        d->engineData->engine = e;
+        return; // the font info and fontdef should already be filled
+    }
+
+    //find the font
+    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();
+
+    ATSFontFamilyRef familyRef = 0;
+    ATSFontRef fontRef = 0;
+
+    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) {
+                QByteArray family_name = db->families[k]->name.toUtf8();
+                familyRef = ATSFontFamilyFindFromName(QCFString(db->families[k]->name), kATSOptionFlagsDefault);
+                if (familyRef) {
+                    fontRef = ATSFontFindFromName(QCFString(db->families[k]->name), kATSOptionFlagsDefault);
+                    goto FamilyFound;
+                } else {
+#if defined(QT_MAC_USE_COCOA)
+                    // ATS and CT disagrees on what the family name should be,
+                    // use CT to look up the font if ATS fails.
+                    QCFString familyName = QString::fromAscii(family_name);
+                    QCFType<CTFontRef> CTfontRef = CTFontCreateWithName(familyName, 12, NULL);
+                    QCFType<CTFontDescriptorRef> fontDescriptor = CTFontCopyFontDescriptor(CTfontRef);
+                    QCFString displayName = (CFStringRef)CTFontDescriptorCopyAttribute(fontDescriptor, kCTFontDisplayNameAttribute);
+
+                    familyRef = ATSFontFamilyFindFromName(displayName, kATSOptionFlagsDefault);
+                    if (familyRef) {
+                        fontRef = ATSFontFindFromName(displayName, kATSOptionFlagsDefault);
+                        goto FamilyFound;
+                    }
+#endif
+                }
+            }
+        }
+    }
+FamilyFound:
+    //fill in the engine's font definition
+    QFontDef fontDef = d->request; //copy..
+    if(fontDef.pointSize < 0)
+	fontDef.pointSize = qt_mac_pointsize(fontDef, d->dpi);
+    else
+	fontDef.pixelSize = qt_mac_pixelsize(fontDef, d->dpi);
+#if 0
+    ItemCount name_count;
+    if(ATSUCountFontNames(fontID, &name_count) == noErr && name_count) {
+        ItemCount actualName_size;
+        if(ATSUGetIndFontName(fontID, 0, 0, 0, &actualName_size, 0, 0, 0, 0) == noErr && actualName_size) {
+            QByteArray actualName(actualName_size);
+            if(ATSUGetIndFontName(fontID, 0, actualName_size, actualName.data(), &actualName_size, 0, 0, 0, 0) == noErr && actualName_size)
+                fontDef.family = QString::fromUtf8(actualName);
+        }
+    }
+#else
+    {
+        QCFString actualName;
+        if(ATSFontFamilyGetName(familyRef, kATSOptionFlagsDefault, &actualName) == noErr)
+            fontDef.family = actualName;
+    }
+#endif
+
+#ifdef QT_MAC_USE_COCOA
+    QFontEngine *engine = new QCoreTextFontEngineMulti(familyRef, fontRef, fontDef, d->kerning);
+#elif 1
+    QFontEngine *engine = new QFontEngineMacMulti(familyRef, fontRef, fontDef, d->kerning);
+#else
+    ATSFontFamilyRef atsFamily = familyRef;
+    ATSFontFamilyRef atsFontRef = fontRef;
+
+    FMFont fontID;
+    FMFontFamily fmFamily;
+    FMFontStyle fntStyle = 0;
+    fmFamily = FMGetFontFamilyFromATSFontFamilyRef(atsFamily);
+    if (fmFamily == kInvalidFontFamily) {
+        // Use the ATSFont then...
+        fontID = FMGetFontFromATSFontRef(atsFontRef);
+    } else {
+        if (fontDef.weight >= QFont::Bold)
+            fntStyle |= ::bold;
+        if (fontDef.style != QFont::StyleNormal)
+            fntStyle |= ::italic;
+
+        FMFontStyle intrinsicStyle;
+        FMFont fnt = 0;
+        if (FMGetFontFromFontFamilyInstance(fmFamily, fntStyle, &fnt, &intrinsicStyle) == noErr)
+           fontID = FMGetATSFontRefFromFont(fnt);
+    }
+
+    OSStatus status;
+
+    const int maxAttributeCount = 5;
+    ATSUAttributeTag tags[maxAttributeCount + 1];
+    ByteCount sizes[maxAttributeCount + 1];
+    ATSUAttributeValuePtr values[maxAttributeCount + 1];
+    int attributeCount = 0;
+
+    Fixed size = FixRatio(fontDef.pixelSize, 1);
+    tags[attributeCount] = kATSUSizeTag;
+    sizes[attributeCount] = sizeof(size);
+    values[attributeCount] = &size;
+    ++attributeCount;
+
+    tags[attributeCount] = kATSUFontTag;
+    sizes[attributeCount] = sizeof(fontID);
+    values[attributeCount] = &fontID;
+    ++attributeCount;
+
+    CGAffineTransform transform = CGAffineTransformIdentity;
+    if (fontDef.stretch != 100) {
+        transform = CGAffineTransformMakeScale(float(fontDef.stretch) / float(100), 1);
+        tags[attributeCount] = kATSUFontMatrixTag;
+        sizes[attributeCount] = sizeof(transform);
+        values[attributeCount] = &transform;
+        ++attributeCount;
+    }
+
+    ATSUStyle style;
+    status = ATSUCreateStyle(&style);
+    Q_ASSERT(status == noErr);
+
+    Q_ASSERT(attributeCount < maxAttributeCount + 1);
+    status = ATSUSetAttributes(style, attributeCount, tags, sizes, values);
+    Q_ASSERT(status == noErr);
+
+    QFontEngine *engine = new QFontEngineMac(style, fontID, fontDef, /*multiEngine*/ 0);
+    ATSUDisposeStyle(style);
+#endif
+    d->engineData->engine = engine;
+    engine->ref.ref(); //a ref for the engineData->engine
+    QFontCache::instance()->insertEngine(key, engine);
+}
+
+static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
+{
+    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) {
+                extern OSErr qt_mac_create_fsref(const QString &, FSRef *); // qglobal.cpp
+                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
+                extern Q_CORE_EXPORT OSErr qt_mac_create_fsspec(const QString &, FSSpec *); // global.cpp
+                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;
+}
+
+bool QFontDatabase::removeApplicationFont(int handle)
+{
+    QMutexLocker locker(fontDatabaseMutex());
+
+    QFontDatabasePrivate *db = privateDb();
+    if(handle < 0 || handle >= db->applicationFonts.count())
+        return false;
+
+    OSStatus e = ATSFontDeactivate(db->applicationFonts.at(handle).handle,
+                                   /*iRefCon=*/0, kATSOptionFlagsDefault);
+    if(e != noErr)
+        return false;
+
+    db->applicationFonts[handle] = QFontDatabasePrivate::ApplicationFont();
+
+    db->invalidate();
+    return true;
+}
+
+bool QFontDatabase::removeAllApplicationFonts()
+{
+    QMutexLocker locker(fontDatabaseMutex());
+
+    QFontDatabasePrivate *db = privateDb();
+    for(int i = 0; i < db->applicationFonts.count(); ++i) {
+        if(!removeApplicationFont(i))
+            return false;
+    }
+    return true;
+}
+
+bool QFontDatabase::supportsThreadedFontRendering()
+{
+    return true;
+}
+
+QT_END_NAMESPACE