Mac Core Text font database for QPA

Add Core Text fontdatabase for Mac and use it as default. It also
reenabled Core Text font engine for native font rendering on Mac,
though it's not used in declarative UI (by default declarative
will still use scenegraph, which will only use this font engine
for retrieving font metrics and outlines).

With the new fontdatabase it's now possible to load all the fonts
installed in the system as well as adding application fonts.

Change-Id: I0d2aa1420019adf6d0f70dd147a9d71b2684d3f1
Reviewed-by: Morten Johan Sørvig <morten.sorvig@nokia.com>

6 files changed, 1451 insertions, 3 deletions

diff --git a/src/platformsupport/fontdatabases/fontdatabases.pri b/src/platformsupport/fontdatabases/fontdatabases.pri
index 3e4b0e9970..0fc4e71a3f 100644
--- a/src/platformsupport/fontdatabases/fontdatabases.pri
+++ b/src/platformsupport/fontdatabases/fontdatabases.pri
@@ -1,15 +1,19 @@
 DEFINES += QT_COMPILES_IN_HARFBUZZ
 INCLUDEPATH += $$QT_SOURCE_TREE/src/3rdparty/harfbuzz/src
-CONFIG += qpa/genericunixfontdatabase
 
-!win32|contains(QT_CONFIG, freetype) {
+!win32|contains(QT_CONFIG, freetype):!mac {
     include($$PWD/basic/basic.pri)
 }
 
-unix {
+unix:!mac {
+    CONFIG += qpa/genericunixfontdatabase
     include($$PWD/genericunix/genericunix.pri)
     contains(QT_CONFIG,fontconfig) {
         include($$PWD/fontconfig/fontconfig.pri)
     }
 }
 
+mac {
+    include($$PWD/mac/coretext.pri)
+}
+
diff --git a/src/platformsupport/fontdatabases/mac/coretext.pri b/src/platformsupport/fontdatabases/mac/coretext.pri
new file mode 100644
index 0000000000..f7977964fe
--- /dev/null
+++ b/src/platformsupport/fontdatabases/mac/coretext.pri
@@ -0,0 +1,2 @@
+HEADERS += $$PWD/qcoretextfontdatabase_p.h $$PWD/qfontengine_coretext_p.h
+OBJECTIVE_SOURCES += $$PWD/qfontengine_coretext.mm $$PWD/qcoretextfontdatabase.mm
diff --git a/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm
new file mode 100644
index 0000000000..5c6024986d
--- /dev/null
+++ b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase.mm
@@ -0,0 +1,342 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcoretextfontdatabase_p.h"
+#include "qfontengine_coretext_p.h"
+#include <QtCore/QSettings>
+#import <Foundation/Foundation.h>
+
+// this could become a list of all languages used for each writing
+// system, instead of using the single most common language.
+static const char *languageForWritingSystem[] = {
+    0,     // Any
+    "en",  // Latin
+    "el",  // Greek
+    "ru",  // Cyrillic
+    "hy",  // Armenian
+    "he",  // Hebrew
+    "ar",  // Arabic
+    "syr", // Syriac
+    "div", // Thaana
+    "hi",  // Devanagari
+    "bn",  // Bengali
+    "pa",  // Gurmukhi
+    "gu",  // Gujarati
+    "or",  // Oriya
+    "ta",  // Tamil
+    "te",  // Telugu
+    "kn",  // Kannada
+    "ml",  // Malayalam
+    "si",  // Sinhala
+    "th",  // Thai
+    "lo",  // Lao
+    "bo",  // Tibetan
+    "my",  // Myanmar
+    "ka",  // Georgian
+    "km",  // Khmer
+    "zh-cn", // SimplifiedChinese
+    "zh-tw", // TraditionalChinese
+    "ja",  // Japanese
+    "ko",  // Korean
+    "vi",  // Vietnamese
+    0, // Symbol
+    0, // Ogham
+    0, // Runic
+    0 // N'Ko
+};
+enum { LanguageCount = sizeof(languageForWritingSystem) / sizeof(const char *) };
+
+inline QString qt_mac_NSStringToQString(const NSString *nsstr)
+{ return QCFString::toQString(reinterpret_cast<const CFStringRef>(nsstr)); }
+
+int qt_antialiasing_threshold = 0;
+
+QFont::StyleHint styleHintFromNSString(NSString *style)
+{
+    if ([style isEqual: @"sans-serif"])
+        return QFont::SansSerif;
+    else if ([style isEqual: @"monospace"])
+        return QFont::Monospace;
+    else if ([style isEqual: @"cursive"])
+        return QFont::Cursive;
+    else if ([style isEqual: @"serif"])
+        return QFont::Serif;
+    else if ([style isEqual: @"fantasy"])
+        return QFont::Fantasy;
+    else // if ([style isEqual: @"default"])
+        return QFont::AnyStyle;
+}
+
+static NSInteger languageMapSort(id obj1, id obj2, void *context)
+{
+    NSArray *map1 = (NSArray *) obj1;
+    NSArray *map2 = (NSArray *) obj2;
+    NSArray *languages = (NSArray *) context;
+
+    NSString *lang1 = [map1 objectAtIndex: 0];
+    NSString *lang2 = [map2 objectAtIndex: 0];
+
+    return [languages indexOfObject: lang1] - [languages indexOfObject: lang2];
+}
+
+QCoreTextFontDatabase::QCoreTextFontDatabase()
+{
+    QSettings appleSettings(QLatin1String("apple.com"));
+    QVariant appleValue = appleSettings.value(QLatin1String("AppleAntiAliasingThreshold"));
+    if (appleValue.isValid())
+        qt_antialiasing_threshold = appleValue.toInt();
+}
+
+QCoreTextFontDatabase::~QCoreTextFontDatabase()
+{
+}
+
+static QString familyNameFromPostScriptName(QHash<QString, QString> &psNameToFamily,
+                                            NSString *psName)
+{
+    QString name = qt_mac_NSStringToQString(psName);
+    if (psNameToFamily.contains(name))
+        return psNameToFamily[name];
+    else {
+        // Some of the font name in DefaultFontFallbacks.plist are hidden fonts like AquaHiraKaku,
+        // their family name begins with a dot, like ".AquaHiraKaku" or ".Apple Symbols Fallback",
+        // the only way (I've found) to get it are actually creating a CTFont with them. We only
+        // need to do it once though.
+        QCFType<CTFontRef> font = CTFontCreateWithName((CFStringRef) psName, 12.0, NULL);
+        if (font) {
+            QCFString family = CTFontCopyFamilyName(font);
+            psNameToFamily[name] = family;
+            return family;
+        }
+        return name;
+    }
+}
+
+void QCoreTextFontDatabase::populateFontDatabase()
+{
+    QCFType<CTFontCollectionRef> collection = CTFontCollectionCreateFromAvailableFonts(0);
+    if (! collection)
+        return;
+
+    QCFType<CFArrayRef> fonts = CTFontCollectionCreateMatchingFontDescriptors(collection);
+    if (! fonts)
+        return;
+
+    QString foundryName = QLatin1String("CoreText");
+    const int numFonts = CFArrayGetCount(fonts);
+    QHash<QString, QString> psNameToFamily;
+    for (int i = 0; i < numFonts; ++i) {
+        CTFontDescriptorRef font = (CTFontDescriptorRef) CFArrayGetValueAtIndex(fonts, i);
+        QCFString familyName = (CFStringRef) CTFontDescriptorCopyLocalizedAttribute(font, kCTFontFamilyNameAttribute, NULL);
+        QCFType<CFDictionaryRef> styles = (CFDictionaryRef) CTFontDescriptorCopyAttribute(font, kCTFontTraitsAttribute);
+        QFont::Weight weight = QFont::Normal;
+        QFont::Style style = QFont::StyleNormal;
+        QFont::Stretch stretch = QFont::Unstretched;
+        bool fixedPitch = false;
+
+        if (styles) {
+            if (CFNumberRef weightValue = (CFNumberRef) CFDictionaryGetValue(styles, kCTFontWeightTrait)) {
+                Q_ASSERT(CFNumberIsFloatType(weightValue));
+                double d;
+                if (CFNumberGetValue(weightValue, kCFNumberDoubleType, &d))
+                    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)) {
+                    if (d > 0.0)
+                        style = QFont::StyleItalic;
+                }
+            }
+            if (CFNumberRef symbolic = (CFNumberRef) CFDictionaryGetValue(styles, kCTFontSymbolicTrait)) {
+                int d;
+                if (CFNumberGetValue(symbolic, kCFNumberSInt32Type, &d)) {
+                    if (d & kCTFontMonoSpaceTrait)
+                        fixedPitch = true;
+                    if (d & kCTFontExpandedTrait)
+                        stretch = QFont::Expanded;
+                    else if (d & kCTFontCondensedTrait)
+                        stretch = QFont::Condensed;
+                }
+            }
+        }
+
+        int pixelSize = 0;
+        if (QCFType<CFNumberRef> size = (CFNumberRef) CTFontDescriptorCopyAttribute(font, kCTFontSizeAttribute)) {
+            if (CFNumberIsFloatType(size)) {
+                double d;
+                CFNumberGetValue(size, kCFNumberDoubleType, &d);
+                pixelSize = d;
+            } else {
+                CFNumberGetValue(size, kCFNumberIntType, &pixelSize);
+            }
+        }
+
+        QSupportedWritingSystems writingSystems;
+        if (QCFType<CFArrayRef> languages = (CFArrayRef) CTFontDescriptorCopyAttribute(font, kCTFontLanguagesAttribute)) {
+            for (int i = 1; i < LanguageCount; ++i) {
+                if (!languageForWritingSystem[i])
+                    continue;
+                QCFString lang = CFStringCreateWithCString(NULL, languageForWritingSystem[i], kCFStringEncodingASCII);
+                if (CFArrayContainsValue(languages, CFRangeMake(0, 0), lang))
+                    writingSystems.setSupported(QFontDatabase::WritingSystem(i));
+            }
+        }
+
+        CFRetain(font);
+        QPlatformFontDatabase::registerFont(familyName, foundryName, weight, style, stretch,
+                                            true /* antialiased */, true /* scalable */,
+                                            pixelSize, fixedPitch, writingSystems, (void *) font);
+        CFStringRef psName = (CFStringRef) CTFontDescriptorCopyAttribute(font, kCTFontNameAttribute);
+        // we need PostScript Name to family name mapping for fallback list construction
+        psNameToFamily[qt_mac_NSStringToQString((NSString *) psName)] = familyName;
+        CFRelease(psName);
+    }
+
+    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSArray *languages = [defaults stringArrayForKey: @"AppleLanguages"];
+
+    NSAutoreleasePool *pool = [NSAutoreleasePool new];
+
+    NSDictionary *fallbackDict = [NSDictionary dictionaryWithContentsOfFile: @"/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/Resources/DefaultFontFallbacks.plist"];
+
+    for (NSString *style in [fallbackDict allKeys]) {
+        NSArray *list = [fallbackDict valueForKey: style];
+        QFont::StyleHint styleHint = styleHintFromNSString(style);
+        QStringList fallbackList;
+        for (id item in list) {
+            // sort the array based on system language preferences
+            if ([item isKindOfClass: [NSArray class]]) {
+                NSArray *langs = [(NSArray *) item sortedArrayUsingFunction: languageMapSort
+                                                                    context: languages];
+                for (NSArray *map in langs)
+                    fallbackList.append(familyNameFromPostScriptName(psNameToFamily, [map objectAtIndex: 1]));
+            }
+            else if ([item isKindOfClass: [NSString class]])
+                fallbackList.append(familyNameFromPostScriptName(psNameToFamily, item));
+        }
+        fallbackLists[styleHint] = fallbackList;
+    }
+
+    [pool release];
+}
+
+void QCoreTextFontDatabase::releaseHandle(void *handle)
+{
+    CFRelease(CTFontDescriptorRef(handle));
+}
+
+QFontEngine *QCoreTextFontDatabase::fontEngine(const QFontDef &f, QUnicodeTables::Script script, void *usrPtr)
+{
+    Q_UNUSED(script);
+
+    CTFontDescriptorRef descriptor = (CTFontDescriptorRef) usrPtr;
+    CTFontRef font = CTFontCreateWithFontDescriptor(descriptor, f.pointSize, NULL);
+    if (font) {
+        QFontEngine *engine = new QCoreTextFontEngine(font, f);
+        engine->fontDef = f;
+        CFRelease(font);
+        return engine;
+    }
+
+    return NULL;
+}
+
+QStringList QCoreTextFontDatabase::fallbacksForFamily(const QString family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script) const
+{
+    Q_UNUSED(family);
+    Q_UNUSED(style);
+    Q_UNUSED(script);
+    return fallbackLists[styleHint];
+}
+
+QStringList QCoreTextFontDatabase::addApplicationFont(const QByteArray &fontData, const QString &fileName)
+{
+    ATSFontContainerRef fontContainer;
+    OSStatus e;
+
+    if (!fontData.isEmpty()) {
+        e = ATSFontActivateFromMemory((void *) fontData.constData(), fontData.size(),
+                                      kATSFontContextLocal, kATSFontFormatUnspecified, NULL,
+                                      kATSOptionFlagsDefault, &fontContainer);
+    } else {
+        OSErr qt_mac_create_fsref(const QString &file, FSRef *fsref);
+        FSRef ref;
+        if (qt_mac_create_fsref(fileName, &ref) != noErr)
+            return QStringList();
+        e = ATSFontActivateFromFileReference(&ref, kATSFontContextLocal, kATSFontFormatUnspecified, 0,
+                                             kATSOptionFlagsDefault, &fontContainer);
+    }
+
+    if (e == noErr) {
+        ItemCount fontCount = 0;
+        e = ATSFontFindFromContainer(fontContainer, kATSOptionFlagsDefault, 0, 0, &fontCount);
+        if (e != noErr)
+            return QStringList();
+
+        QVarLengthArray<ATSFontRef> containedFonts(fontCount);
+        e = ATSFontFindFromContainer(fontContainer, kATSOptionFlagsDefault, fontCount, containedFonts.data(), &fontCount);
+        if (e != noErr)
+            return QStringList();
+
+        QStringList families;
+        for (int i = 0; i < containedFonts.size(); ++i) {
+            QCFType<CTFontRef> font = CTFontCreateWithPlatformFont(containedFonts[i], 12.0, NULL, NULL);
+            families.append(QCFString(CTFontCopyFamilyName(font)));
+        }
+
+        return families;
+    }
+
+    return QStringList();
+}
+
+QFont QCoreTextFontDatabase::defaultFont() const
+{
+    if (defaultFontName.isEmpty()) {
+        QCFType<CTFontRef> font = CTFontCreateUIFontForLanguage(kCTFontSystemFontType, 12.0, NULL);
+        defaultFontName = (QString) QCFString(CTFontCopyFullName(font));
+    }
+
+    return QFont(defaultFontName);
+}
+
diff --git a/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase_p.h b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase_p.h
new file mode 100644
index 0000000000..3560f8c35c
--- /dev/null
+++ b/src/platformsupport/fontdatabases/mac/qcoretextfontdatabase_p.h
@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCORETEXTFONTDATABASE_H
+#define QCORETEXTFONTDATABASE_H
+
+#include <QPlatformFontDatabase>
+
+class QCoreTextFontDatabase : public QPlatformFontDatabase
+{
+public:
+    QCoreTextFontDatabase();
+    ~QCoreTextFontDatabase();
+    void populateFontDatabase();
+    QFontEngine *fontEngine(const QFontDef &fontDef, QUnicodeTables::Script script, void *handle);
+    QStringList fallbacksForFamily(const QString family, const QFont::Style &style, const QFont::StyleHint &styleHint, const QUnicodeTables::Script &script) const;
+    QStringList addApplicationFont(const QByteArray &fontData, const QString &fileName);
+    void releaseHandle(void *handle);
+    QFont defaultFont() const;
+private:
+    mutable QString defaultFontName;
+    QHash<QFont::StyleHint, QStringList> fallbackLists;
+};
+
+#endif // QCORETEXTFONTDATABASE_H
diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
new file mode 100644
index 0000000000..9a84dfc3dd
--- /dev/null
+++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm
@@ -0,0 +1,882 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qfontengine_coretext_p.h"
+
+#include <QtCore/qendian.h>
+#include <QtCore/qsettings.h>
+
+#include <private/qimage_p.h>
+
+#if !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+
+QT_BEGIN_NAMESPACE
+
+static float SYNTHETIC_ITALIC_SKEW = tanf(14 * acosf(0) / 90);
+
+static void loadAdvancesForGlyphs(CTFontRef ctfont,
+                                  QVarLengthArray<CGGlyph> &cgGlyphs,
+                                  QGlyphLayout *glyphs, int len,
+                                  QTextEngine::ShaperFlags flags,
+                                  const QFontDef &fontDef)
+{
+    Q_UNUSED(flags);
+    QVarLengthArray<CGSize> advances(len);
+    CTFontGetAdvancesForGlyphs(ctfont, kCTFontHorizontalOrientation, cgGlyphs.data(), advances.data(), len);
+
+    for (int i = 0; i < len; ++i) {
+        if (glyphs->glyphs[i] & 0xff000000)
+            continue;
+        glyphs->advances_x[i] = QFixed::fromReal(advances[i].width);
+        glyphs->advances_y[i] = QFixed::fromReal(advances[i].height);
+    }
+
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        for (int i = 0; i < len; ++i) {
+            glyphs->advances_x[i] = glyphs->advances_x[i].round();
+            glyphs->advances_y[i] = glyphs->advances_y[i].round();
+        }
+    }
+}
+
+QCoreTextFontEngineMulti::QCoreTextFontEngineMulti(const QCFString &name, const QFontDef &fontDef, bool kerning)
+    : QFontEngineMulti(0)
+{
+    this->fontDef = fontDef;
+    CTFontSymbolicTraits symbolicTraits = 0;
+    if (fontDef.weight >= QFont::Bold)
+        symbolicTraits |= kCTFontBoldTrait;
+    switch (fontDef.style) {
+    case QFont::StyleNormal:
+        break;
+    case QFont::StyleItalic:
+    case QFont::StyleOblique:
+        symbolicTraits |= kCTFontItalicTrait;
+        break;
+    }
+
+    transform = CGAffineTransformIdentity;
+    if (fontDef.stretch != 100) {
+        transform = CGAffineTransformMakeScale(float(fontDef.stretch) / float(100), 1);
+    }
+
+    QCFType<CTFontDescriptorRef> descriptor = CTFontDescriptorCreateWithNameAndSize(name, fontDef.pixelSize);
+    QCFType<CTFontRef> baseFont = CTFontCreateWithFontDescriptor(descriptor, fontDef.pixelSize, &transform);
+    ctfont = NULL;
+    // There is a side effect in Core Text: if we apply 0 as symbolic traits to a font in normal weight,
+    // we will get the light version of that font (while the way supposed to work doesn't:
+    // setting kCTFontWeightTrait to some value between -1.0 to 0.0 has no effect on font selection)
+    if (fontDef.weight != QFont::Normal || symbolicTraits)
+        ctfont = CTFontCreateCopyWithSymbolicTraits(baseFont, fontDef.pixelSize, &transform, symbolicTraits, symbolicTraits);
+
+    // CTFontCreateCopyWithSymbolicTraits returns NULL if we ask for a trait that does
+    // not exist for the given font. (for example italic)
+    if (ctfont == 0) {
+        ctfont = baseFont;
+        CFRetain(ctfont);
+    }
+    init(kerning);
+}
+
+QCoreTextFontEngineMulti::QCoreTextFontEngineMulti(CTFontRef ctFontRef, const QFontDef &fontDef, bool kerning)
+    : QFontEngineMulti(0)
+{
+    this->fontDef = fontDef;
+    ctfont = (CTFontRef) CFRetain(ctFontRef);
+    init(kerning);
+}
+
+QCoreTextFontEngineMulti::~QCoreTextFontEngineMulti()
+{
+    CFRelease(ctfont);
+}
+
+void QCoreTextFontEngineMulti::init(bool kerning)
+{
+    Q_ASSERT(ctfont != NULL);
+    attributeDict = CFDictionaryCreateMutable(0, 2,
+                                       &kCFTypeDictionaryKeyCallBacks,
+                                       &kCFTypeDictionaryValueCallBacks);
+    CFDictionaryAddValue(attributeDict, kCTFontAttributeName, ctfont);
+    if (!kerning) {
+        float zero = 0.0;
+        QCFType<CFNumberRef> noKern = CFNumberCreate(kCFAllocatorDefault, kCFNumberFloatType, &zero);
+        CFDictionaryAddValue(attributeDict, kCTKernAttributeName, noKern);
+    }
+
+    QCoreTextFontEngine *fe = new QCoreTextFontEngine(ctfont, fontDef);
+    fontDef.family = fe->fontDef.family;
+    fontDef.styleName = fe->fontDef.styleName;
+    transform = fe->transform;
+    fe->ref.ref();
+    engines.append(fe);
+}
+
+uint QCoreTextFontEngineMulti::fontIndexForFont(CTFontRef font) const
+{
+    for (int i = 0; i < engines.count(); ++i) {
+        if (CFEqual(engineAt(i)->ctfont, font))
+            return i;
+    }
+
+    QCoreTextFontEngineMulti *that = const_cast<QCoreTextFontEngineMulti *>(this);
+    QCoreTextFontEngine *fe = new QCoreTextFontEngine(font, fontDef);
+    fe->ref.ref();
+    that->engines.append(fe);
+    return engines.count() - 1;
+}
+
+bool QCoreTextFontEngineMulti::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
+                                            int *nglyphs, QTextEngine::ShaperFlags flags,
+                                            unsigned short *logClusters, const HB_CharAttributes *,
+                                            QScriptItem *si) const
+{
+    QCFType<CFStringRef> cfstring = CFStringCreateWithCharactersNoCopy(0,
+                                                               reinterpret_cast<const UniChar *>(str),
+                                                               len, kCFAllocatorNull);
+    QCFType<CFAttributedStringRef> attributedString = CFAttributedStringCreate(0, cfstring, attributeDict);
+    QCFType<CTTypesetterRef> typeSetter;
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    if (flags & QTextEngine::RightToLeft) {
+        const void *optionKeys[] = { kCTTypesetterOptionForcedEmbeddingLevel };
+        const short rtlForcedEmbeddingLevelValue = 1;
+        const void *rtlOptionValues[] = { CFNumberCreate(kCFAllocatorDefault, kCFNumberShortType, &rtlForcedEmbeddingLevelValue) };
+        QCFType<CFDictionaryRef> options = CFDictionaryCreate(kCFAllocatorDefault, optionKeys, rtlOptionValues, 1,
+                                                              &kCFCopyStringDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
+        typeSetter = CTTypesetterCreateWithAttributedStringAndOptions(attributedString, options);
+    } else
+#else
+    Q_UNUSED(flags);
+#endif
+        typeSetter = CTTypesetterCreateWithAttributedString(attributedString);
+
+    CFRange range = {0, 0};
+    QCFType<CTLineRef> line = CTTypesetterCreateLine(typeSetter, range);
+    CFArrayRef array = CTLineGetGlyphRuns(line);
+    uint arraySize = CFArrayGetCount(array);
+    glyph_t *outGlyphs = glyphs->glyphs;
+    HB_GlyphAttributes *outAttributes = glyphs->attributes;
+    QFixed *outAdvances_x = glyphs->advances_x;
+    QFixed *outAdvances_y = glyphs->advances_y;
+    glyph_t *initialGlyph = outGlyphs;
+
+    if (arraySize == 0) {
+        // CoreText failed to shape the text we gave it, so we assume one glyph
+        // per character and build a list of invalid glyphs with zero advance
+        *nglyphs = len;
+        for (int i = 0; i < len; ++i) {
+            outGlyphs[i] = 0;
+            if (logClusters)
+                logClusters[i] = i;
+            outAdvances_x[i] = QFixed();
+            outAdvances_y[i] = QFixed();
+            outAttributes[i].clusterStart = true;
+        }
+        return true;
+    }
+
+    const bool rtl = (CTRunGetStatus(static_cast<CTRunRef>(CFArrayGetValueAtIndex(array, 0))) & kCTRunStatusRightToLeft);
+
+    bool outOBounds = false;
+    for (uint i = 0; i < arraySize; ++i) {
+        CTRunRef run = static_cast<CTRunRef>(CFArrayGetValueAtIndex(array, rtl ? (arraySize - 1 - i) : i));
+        CFIndex glyphCount = CTRunGetGlyphCount(run);
+        if (glyphCount == 0)
+            continue;
+
+        Q_ASSERT((CTRunGetStatus(run) & kCTRunStatusRightToLeft) == rtl);
+        CFRange stringRange = CTRunGetStringRange(run);
+        int prepend = 0;
+#if MAC_OS_X_VERSION_MAX_ALLOWED == MAC_OS_X_VERSION_10_5
+        UniChar beginGlyph = CFStringGetCharacterAtIndex(cfstring, stringRange.location);
+        QChar dir = QChar::direction(beginGlyph);
+        bool beginWithOverride = dir == QChar::DirLRO || dir == QChar::DirRLO || dir == QChar::DirLRE || dir == QChar::DirRLE;
+        if (beginWithOverride) {
+            logClusters[stringRange.location] = 0;
+            outGlyphs[0] = 0xFFFF;
+            outAdvances_x[0] = 0;
+            outAdvances_y[0] = 0;
+            outAttributes[0].clusterStart = true;
+            outAttributes[0].dontPrint = true;
+            outGlyphs++;
+            outAdvances_x++;
+            outAdvances_y++;
+            outAttributes++;
+            prepend = 1;
+        }
+#endif
+        UniChar endGlyph = CFStringGetCharacterAtIndex(cfstring, stringRange.location + stringRange.length - 1);
+        bool endWithPDF = QChar::direction(endGlyph) == QChar::DirPDF;
+        if (endWithPDF)
+            glyphCount++;
+
+        if (!outOBounds && outGlyphs + glyphCount - initialGlyph > *nglyphs) {
+            outOBounds = true;
+        }
+        if (!outOBounds) {
+            CFDictionaryRef runAttribs = CTRunGetAttributes(run);
+            //NSLog(@"Dictionary %@", runAttribs);
+            if (!runAttribs)
+                runAttribs = attributeDict;
+            CTFontRef runFont = static_cast<CTFontRef>(CFDictionaryGetValue(runAttribs, kCTFontAttributeName));
+            uint fontIndex = fontIndexForFont(runFont);
+            const QFontEngine *engine = engineAt(fontIndex);
+            fontIndex <<= 24;
+            si->ascent = qMax(engine->ascent(), si->ascent);
+            si->descent = qMax(engine->descent(), si->descent);
+            si->leading = qMax(engine->leading(), si->leading);
+            //NSLog(@"Run Font Name = %@", CTFontCopyFamilyName(runFont));
+            if (endWithPDF)
+                glyphCount--;
+
+            QVarLengthArray<CGGlyph, 512> cgglyphs(0);
+            const CGGlyph *tmpGlyphs = CTRunGetGlyphsPtr(run);
+            if (!tmpGlyphs) {
+                cgglyphs.resize(glyphCount);
+                CTRunGetGlyphs(run, range, cgglyphs.data());
+                tmpGlyphs = cgglyphs.constData();
+            }
+            QVarLengthArray<CGPoint, 512> cgpoints(0);
+            const CGPoint *tmpPoints = CTRunGetPositionsPtr(run);
+            if (!tmpPoints) {
+                cgpoints.resize(glyphCount);
+                CTRunGetPositions(run, range, cgpoints.data());
+                tmpPoints = cgpoints.constData();
+            }
+
+            const int rtlOffset = rtl ? (glyphCount - 1) : 0;
+            const int rtlSign = rtl ? -1 : 1;
+
+            if (logClusters) {
+                CFRange stringRange = CTRunGetStringRange(run);
+                QVarLengthArray<CFIndex, 512> stringIndices(0);
+                const CFIndex *tmpIndices = CTRunGetStringIndicesPtr(run);
+                if (!tmpIndices) {
+                    stringIndices.resize(glyphCount);
+                    CTRunGetStringIndices(run, range, stringIndices.data());
+                    tmpIndices = stringIndices.constData();
+                }
+
+                const int firstGlyphIndex = outGlyphs - initialGlyph;
+                outAttributes[0].clusterStart = true;
+
+                CFIndex k = 0;
+                CFIndex i = 0;
+                for (i = stringRange.location + prepend;
+                     (i < stringRange.location + stringRange.length) && (k < glyphCount); ++i) {
+                    if (tmpIndices[k * rtlSign + rtlOffset] == i || i == stringRange.location + prepend) {
+                        logClusters[i] = k + firstGlyphIndex;
+                        outAttributes[k].clusterStart = true;
+                        ++k;
+                    } else {
+                        logClusters[i] = k + firstGlyphIndex - 1;
+                    }
+                }
+                // in case of a ligature at the end, fill the remaining logcluster entries
+                for (;i < stringRange.location + stringRange.length; i++) {
+                    logClusters[i] = k + firstGlyphIndex - 1;
+                }
+            }
+            for (CFIndex i = 0; i < glyphCount - 1; ++i) {
+                int idx = rtlOffset + rtlSign * i;
+                outGlyphs[idx] = tmpGlyphs[i] | fontIndex;
+                outAdvances_x[idx] = QFixed::fromReal(tmpPoints[i + 1].x - tmpPoints[i].x);
+                // Use negative y advance for flipped coordinate system
+                outAdvances_y[idx] = QFixed::fromReal(tmpPoints[i].y - tmpPoints[i + 1].y);
+
+                if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+                    outAdvances_x[idx] = outAdvances_x[idx].round();
+                    outAdvances_y[idx] = outAdvances_y[idx].round();
+                }
+            }
+            CGSize lastGlyphAdvance;
+            CTFontGetAdvancesForGlyphs(runFont, kCTFontHorizontalOrientation, tmpGlyphs + glyphCount - 1, &lastGlyphAdvance, 1);
+
+            outGlyphs[rtl ? 0 : (glyphCount - 1)] = tmpGlyphs[glyphCount - 1] | fontIndex;
+            outAdvances_x[rtl ? 0 : (glyphCount - 1)] =
+                    (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+                    ? QFixed::fromReal(lastGlyphAdvance.width).round()
+                    : QFixed::fromReal(lastGlyphAdvance.width);
+
+            if (endWithPDF) {
+                logClusters[stringRange.location + stringRange.length - 1] = glyphCount + prepend;
+                outGlyphs[glyphCount] = 0xFFFF;
+                outAdvances_x[glyphCount] = 0;
+                outAdvances_y[glyphCount] = 0;
+                outAttributes[glyphCount].clusterStart = true;
+                outAttributes[glyphCount].dontPrint = true;
+                glyphCount++;
+            }
+        }
+        outGlyphs += glyphCount;
+        outAttributes += glyphCount;
+        outAdvances_x += glyphCount;
+        outAdvances_y += glyphCount;
+    }
+    *nglyphs = (outGlyphs - initialGlyph);
+    return !outOBounds;
+}
+
+bool QCoreTextFontEngineMulti::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
+                                            int *nglyphs, QTextEngine::ShaperFlags flags) const
+{
+    *nglyphs = len;
+    QCFType<CFStringRef> cfstring;
+
+    QVarLengthArray<CGGlyph> cgGlyphs(len);
+    CTFontGetGlyphsForCharacters(ctfont, (const UniChar*)str, cgGlyphs.data(), len);
+
+    for (int i = 0; i < len; ++i) {
+        if (cgGlyphs[i]) {
+            glyphs->glyphs[i] = cgGlyphs[i];
+        } else {
+            if (!cfstring)
+                cfstring = CFStringCreateWithCharactersNoCopy(0, reinterpret_cast<const UniChar *>(str), len, kCFAllocatorNull);
+            QCFType<CTFontRef> substituteFont = CTFontCreateForString(ctfont, cfstring, CFRangeMake(i, 1));
+            CGGlyph substituteGlyph = 0;
+            CTFontGetGlyphsForCharacters(substituteFont, (const UniChar*)str + i, &substituteGlyph, 1);
+            if (substituteGlyph) {
+                const uint fontIndex = (fontIndexForFont(substituteFont) << 24);
+                glyphs->glyphs[i] = substituteGlyph | fontIndex;
+                if (!(flags & QTextEngine::GlyphIndicesOnly)) {
+                    CGSize advance;
+                    CTFontGetAdvancesForGlyphs(substituteFont, kCTFontHorizontalOrientation, &substituteGlyph, &advance, 1);
+                    glyphs->advances_x[i] = QFixed::fromReal(advance.width);
+                    glyphs->advances_y[i] = QFixed::fromReal(advance.height);
+                }
+            }
+        }
+    }
+
+    if (flags & QTextEngine::GlyphIndicesOnly)
+        return true;
+
+    loadAdvancesForGlyphs(ctfont, cgGlyphs, glyphs, len, flags, fontDef);
+    return true;
+}
+
+void QCoreTextFontEngineMulti::loadEngine(int)
+{
+    // Do nothing
+    Q_ASSERT(false);
+}
+
+extern int qt_antialiasing_threshold; // from qapplication.cpp
+
+CGAffineTransform qt_transform_from_fontdef(const QFontDef &fontDef)
+{
+    CGAffineTransform transform = CGAffineTransformIdentity;
+    if (fontDef.stretch != 100)
+        transform = CGAffineTransformMakeScale(float(fontDef.stretch) / float(100), 1);
+    return transform;
+}
+
+QCoreTextFontEngine::QCoreTextFontEngine(CTFontRef font, const QFontDef &def)
+{
+    fontDef = def;
+    transform = qt_transform_from_fontdef(fontDef);
+    ctfont = font;
+    CFRetain(ctfont);
+    cgFont = CTFontCopyGraphicsFont(font, NULL);
+    init();
+}
+
+QCoreTextFontEngine::QCoreTextFontEngine(CGFontRef font, const QFontDef &def)
+{
+    fontDef = def;
+    transform = qt_transform_from_fontdef(fontDef);
+    cgFont = font;
+    // Keep reference count balanced
+    CFRetain(cgFont);
+    ctfont = CTFontCreateWithGraphicsFont(font, fontDef.pixelSize, &transform, NULL);
+    init();
+}
+
+QCoreTextFontEngine::~QCoreTextFontEngine()
+{
+    CFRelease(cgFont);
+    CFRelease(ctfont);
+}
+
+static QFont::Weight weightFromInteger(int weight)
+{
+    if (weight < 400)
+        return QFont::Light;
+    else if (weight < 600)
+        return QFont::Normal;
+    else if (weight < 700)
+        return QFont::DemiBold;
+    else if (weight < 800)
+        return QFont::Bold;
+    else
+        return QFont::Black;
+}
+
+int getTraitValue(CFDictionaryRef allTraits, CFStringRef trait)
+{
+    if (CFDictionaryContainsKey(allTraits, trait)) {
+        CFNumberRef traitNum = (CFNumberRef) CFDictionaryGetValue(allTraits, trait);
+        float v = 0;
+        CFNumberGetValue(traitNum, kCFNumberFloatType, &v);
+        // the value we get from CFNumberRef is from -1.0 to 1.0
+        int value = v * 500 + 500;
+        return value;
+    }
+
+    return 0;
+}
+
+void QCoreTextFontEngine::init()
+{
+    Q_ASSERT(ctfont != NULL);
+    Q_ASSERT(cgFont != NULL);
+
+    QCFString family = CTFontCopyFamilyName(ctfont);
+    fontDef.family = family;
+
+    QCFString styleName = (CFStringRef) CTFontCopyAttribute(ctfont, kCTFontStyleNameAttribute);
+    fontDef.styleName = styleName;
+
+    synthesisFlags = 0;
+    CTFontSymbolicTraits traits = CTFontGetSymbolicTraits(ctfont);
+    if (traits & kCTFontItalicTrait)
+        fontDef.style = QFont::StyleItalic;
+
+    CFDictionaryRef allTraits = CTFontCopyTraits(ctfont);
+    fontDef.weight = weightFromInteger(getTraitValue(allTraits, kCTFontWeightTrait));
+    int slant = getTraitValue(allTraits, kCTFontSlantTrait);
+    if (slant > 500 && !(traits & kCTFontItalicTrait))
+        fontDef.style = QFont::StyleOblique;
+    CFRelease(allTraits);
+
+    if (fontDef.weight >= QFont::Bold && !(traits & kCTFontBoldTrait))
+        synthesisFlags |= SynthesizedBold;
+    // XXX: we probably don't need to synthesis italic for oblique font
+    if (fontDef.style != QFont::StyleNormal && !(traits & kCTFontItalicTrait))
+        synthesisFlags |= SynthesizedItalic;
+
+    avgCharWidth = 0;
+    QByteArray os2Table = getSfntTable(MAKE_TAG('O', 'S', '/', '2'));
+    unsigned emSize = CTFontGetUnitsPerEm(ctfont);
+    if (os2Table.size() >= 10) {
+        fsType = qFromBigEndian<quint16>(reinterpret_cast<const uchar *>(os2Table.constData() + 8));
+        // qAbs is a workaround for weird fonts like Lucida Grande
+        qint16 width = qAbs(qFromBigEndian<qint16>(reinterpret_cast<const uchar *>(os2Table.constData() + 2)));
+        avgCharWidth = QFixed::fromReal(width * fontDef.pixelSize / emSize);
+    } else
+        avgCharWidth = QFontEngine::averageCharWidth();
+}
+
+bool QCoreTextFontEngine::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs,
+                                       int *nglyphs, QTextEngine::ShaperFlags flags) const
+{
+    *nglyphs = len;
+    QCFType<CFStringRef> cfstring;
+
+    QVarLengthArray<CGGlyph> cgGlyphs(len);
+    CTFontGetGlyphsForCharacters(ctfont, (const UniChar*)str, cgGlyphs.data(), len);
+
+    for (int i = 0; i < len; ++i)
+        if (cgGlyphs[i])
+            glyphs->glyphs[i] = cgGlyphs[i];
+
+    if (flags & QTextEngine::GlyphIndicesOnly)
+        return true;
+
+    loadAdvancesForGlyphs(ctfont, cgGlyphs, glyphs, len, flags, fontDef);
+    return true;
+}
+
+glyph_metrics_t QCoreTextFontEngine::boundingBox(const QGlyphLayout &glyphs)
+{
+    QFixed w;
+    bool round = fontDef.styleStrategy & QFont::ForceIntegerMetrics;
+
+    for (int i = 0; i < glyphs.numGlyphs; ++i) {
+        w += round ? glyphs.effectiveAdvance(i).round()
+                   : glyphs.effectiveAdvance(i);
+    }
+    return glyph_metrics_t(0, -(ascent()), w - lastRightBearing(glyphs, round), ascent()+descent(), w, 0);
+}
+
+glyph_metrics_t QCoreTextFontEngine::boundingBox(glyph_t glyph)
+{
+    glyph_metrics_t ret;
+    CGGlyph g = glyph;
+    CGRect rect = CTFontGetBoundingRectsForGlyphs(ctfont, kCTFontHorizontalOrientation, &g, 0, 1);
+    if (synthesisFlags & QFontEngine::SynthesizedItalic) {
+        rect.size.width += rect.size.height * SYNTHETIC_ITALIC_SKEW;
+    }
+    ret.width = QFixed::fromReal(rect.size.width);
+    ret.height = QFixed::fromReal(rect.size.height);
+    ret.x = QFixed::fromReal(rect.origin.x);
+    ret.y = -QFixed::fromReal(rect.origin.y) - ret.height;
+    CGSize advances[1];
+    CTFontGetAdvancesForGlyphs(ctfont, kCTFontHorizontalOrientation, &g, advances, 1);
+    ret.xoff = QFixed::fromReal(advances[0].width);
+    ret.yoff = QFixed::fromReal(advances[0].height);
+
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        ret.xoff = ret.xoff.round();
+        ret.yoff = ret.yoff.round();
+    }
+
+    return ret;
+}
+
+QFixed QCoreTextFontEngine::ascent() const
+{
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetAscent(ctfont)).round()
+            : QFixed::fromReal(CTFontGetAscent(ctfont));
+}
+QFixed QCoreTextFontEngine::descent() const
+{
+    QFixed d = QFixed::fromReal(CTFontGetDescent(ctfont));
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+        d = d.round();
+
+    // subtract a pixel to even out the historical +1 in QFontMetrics::height().
+    // Fix in Qt 5.
+    return d - 1;
+}
+QFixed QCoreTextFontEngine::leading() const
+{
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetLeading(ctfont)).round()
+            : QFixed::fromReal(CTFontGetLeading(ctfont));
+}
+QFixed QCoreTextFontEngine::xHeight() const
+{
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetXHeight(ctfont)).round()
+            : QFixed::fromReal(CTFontGetXHeight(ctfont));
+}
+
+QFixed QCoreTextFontEngine::averageCharWidth() const
+{
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? avgCharWidth.round() : avgCharWidth;
+}
+
+qreal QCoreTextFontEngine::maxCharWidth() const
+{
+    return 0;
+}
+
+qreal QCoreTextFontEngine::minLeftBearing() const
+{
+    return 0;
+}
+
+qreal QCoreTextFontEngine::minRightBearing() const
+{
+    return 0;
+}
+
+void QCoreTextFontEngine::draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight)
+{
+    QVarLengthArray<QFixedPoint> positions;
+    QVarLengthArray<glyph_t> glyphs;
+    QTransform matrix;
+    matrix.translate(x, y);
+    getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
+    if (glyphs.size() == 0)
+        return;
+
+    CGContextSetFontSize(ctx, fontDef.pixelSize);
+
+    CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
+
+    CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, -1, 0, -paintDeviceHeight);
+
+    CGAffineTransformConcat(cgMatrix, oldTextMatrix);
+
+    if (synthesisFlags & QFontEngine::SynthesizedItalic)
+        cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, -SYNTHETIC_ITALIC_SKEW, 1, 0, 0));
+
+    cgMatrix = CGAffineTransformConcat(cgMatrix, transform);
+
+    CGContextSetTextMatrix(ctx, cgMatrix);
+
+    CGContextSetTextDrawingMode(ctx, kCGTextFill);
+
+
+    QVarLengthArray<CGSize> advances(glyphs.size());
+    QVarLengthArray<CGGlyph> cgGlyphs(glyphs.size());
+
+    for (int i = 0; i < glyphs.size() - 1; ++i) {
+        advances[i].width = (positions[i + 1].x - positions[i].x).toReal();
+        advances[i].height = (positions[i + 1].y - positions[i].y).toReal();
+        cgGlyphs[i] = glyphs[i];
+    }
+    advances[glyphs.size() - 1].width = 0;
+    advances[glyphs.size() - 1].height = 0;
+    cgGlyphs[glyphs.size() - 1] = glyphs[glyphs.size() - 1];
+
+    CGContextSetFont(ctx, cgFont);
+    //NSLog(@"Font inDraw %@  ctfont %@", CGFontCopyFullName(cgFont), CTFontCopyFamilyName(ctfont));
+
+    CGContextSetTextPosition(ctx, positions[0].x.toReal(), positions[0].y.toReal());
+
+    CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
+
+    if (synthesisFlags & QFontEngine::SynthesizedBold) {
+        CGContextSetTextPosition(ctx, positions[0].x.toReal() + 0.5 * lineThickness().toReal(),
+                                 positions[0].y.toReal());
+
+        CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
+    }
+
+    CGContextSetTextMatrix(ctx, oldTextMatrix);
+}
+
+struct ConvertPathInfo
+{
+    ConvertPathInfo(QPainterPath *newPath, const QPointF &newPos) : path(newPath), pos(newPos) {}
+    QPainterPath *path;
+    QPointF pos;
+};
+
+static void convertCGPathToQPainterPath(void *info, const CGPathElement *element)
+{
+    ConvertPathInfo *myInfo = static_cast<ConvertPathInfo *>(info);
+    switch(element->type) {
+        case kCGPathElementMoveToPoint:
+            myInfo->path->moveTo(element->points[0].x + myInfo->pos.x(),
+                                 element->points[0].y + myInfo->pos.y());
+            break;
+        case kCGPathElementAddLineToPoint:
+            myInfo->path->lineTo(element->points[0].x + myInfo->pos.x(),
+                                 element->points[0].y + myInfo->pos.y());
+            break;
+        case kCGPathElementAddQuadCurveToPoint:
+            myInfo->path->quadTo(element->points[0].x + myInfo->pos.x(),
+                                 element->points[0].y + myInfo->pos.y(),
+                                 element->points[1].x + myInfo->pos.x(),
+                                 element->points[1].y + myInfo->pos.y());
+            break;
+        case kCGPathElementAddCurveToPoint:
+            myInfo->path->cubicTo(element->points[0].x + myInfo->pos.x(),
+                                  element->points[0].y + myInfo->pos.y(),
+                                  element->points[1].x + myInfo->pos.x(),
+                                  element->points[1].y + myInfo->pos.y(),
+                                  element->points[2].x + myInfo->pos.x(),
+                                  element->points[2].y + myInfo->pos.y());
+            break;
+        case kCGPathElementCloseSubpath:
+            myInfo->path->closeSubpath();
+            break;
+        default:
+            qDebug() << "Unhandled path transform type: " << element->type;
+    }
+
+}
+
+void QCoreTextFontEngine::addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nGlyphs,
+                                          QPainterPath *path, QTextItem::RenderFlags)
+{
+    CGAffineTransform cgMatrix = CGAffineTransformIdentity;
+    cgMatrix = CGAffineTransformScale(cgMatrix, 1, -1);
+
+    if (synthesisFlags & QFontEngine::SynthesizedItalic)
+        cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, -SYNTHETIC_ITALIC_SKEW, 1, 0, 0));
+
+    for (int i = 0; i < nGlyphs; ++i) {
+        QCFType<CGPathRef> cgpath = CTFontCreatePathForGlyph(ctfont, glyphs[i], &cgMatrix);
+        ConvertPathInfo info(path, positions[i].toPointF());
+        CGPathApply(cgpath, &info, convertCGPathToQPainterPath);
+    }
+}
+
+QImage QCoreTextFontEngine::imageForGlyph(glyph_t glyph, QFixed subPixelPosition, int /*margin*/, bool aa)
+{
+    const glyph_metrics_t br = boundingBox(glyph);
+    QImage im(qRound(br.width)+2, qRound(br.height)+2, QImage::Format_RGB32);
+    im.fill(0);
+
+    CGColorSpaceRef colorspace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
+    uint cgflags = kCGImageAlphaNoneSkipFirst;
+#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
+    cgflags |= kCGBitmapByteOrder32Host;
+#endif
+    CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
+                                             8, im.bytesPerLine(), colorspace,
+                                             cgflags);
+    CGContextSetFontSize(ctx, fontDef.pixelSize);
+    CGContextSetShouldAntialias(ctx, (aa || fontDef.pointSize > qt_antialiasing_threshold)
+                                 && !(fontDef.styleStrategy & QFont::NoAntialias));
+    CGContextSetShouldSmoothFonts(ctx, aa);
+    CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
+    CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
+
+    CGAffineTransformConcat(cgMatrix, oldTextMatrix);
+
+    if (synthesisFlags & QFontEngine::SynthesizedItalic)
+        cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, SYNTHETIC_ITALIC_SKEW, 1, 0, 0));
+
+    cgMatrix = CGAffineTransformConcat(cgMatrix, transform);
+
+    CGContextSetTextMatrix(ctx, cgMatrix);
+    CGContextSetRGBFillColor(ctx, 1, 1, 1, 1);
+    CGContextSetTextDrawingMode(ctx, kCGTextFill);
+
+    CGContextSetFont(ctx, cgFont);
+
+    qreal pos_x = -br.x.truncate() + subPixelPosition.toReal();
+    qreal pos_y = im.height() + br.y.toReal();
+    CGContextSetTextPosition(ctx, pos_x, pos_y);
+
+    CGSize advance;
+    advance.width = 0;
+    advance.height = 0;
+    CGGlyph cgGlyph = glyph;
+    CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
+
+    if (synthesisFlags & QFontEngine::SynthesizedBold) {
+        CGContextSetTextPosition(ctx, pos_x + 0.5 * lineThickness().toReal(), pos_y);
+        CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
+    }
+
+    CGContextRelease(ctx);
+
+    return im;
+}
+
+QImage QCoreTextFontEngine::alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition)
+{
+    QImage im = imageForGlyph(glyph, subPixelPosition, 0, false);
+
+    QImage indexed(im.width(), im.height(), QImage::Format_Indexed8);
+    QVector<QRgb> colors(256);
+    for (int i=0; i<256; ++i)
+        colors[i] = qRgba(0, 0, 0, i);
+    indexed.setColorTable(colors);
+
+    for (int y=0; y<im.height(); ++y) {
+        uint *src = (uint*) im.scanLine(y);
+        uchar *dst = indexed.scanLine(y);
+        for (int x=0; x<im.width(); ++x) {
+            *dst = qGray(*src);
+            ++dst;
+            ++src;
+        }
+    }
+
+    return indexed;
+}
+
+QImage QCoreTextFontEngine::alphaRGBMapForGlyph(glyph_t glyph, QFixed subPixelPosition, int margin, const QTransform &x)
+{
+    if (x.type() >= QTransform::TxScale)
+        return QFontEngine::alphaRGBMapForGlyph(glyph, subPixelPosition, margin, x);
+
+    QImage im = imageForGlyph(glyph, subPixelPosition, margin, true);
+    qGamma_correct_back_to_linear_cs(&im);
+    return im;
+}
+
+void QCoreTextFontEngine::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const
+{
+    int i, numGlyphs = glyphs->numGlyphs;
+    QVarLengthArray<CGGlyph> cgGlyphs(numGlyphs);
+
+    for (i = 0; i < numGlyphs; ++i) {
+        if (glyphs->glyphs[i] & 0xff000000)
+            cgGlyphs[i] = 0;
+        else
+            cgGlyphs[i] = glyphs->glyphs[i];
+    }
+
+    loadAdvancesForGlyphs(ctfont, cgGlyphs, glyphs, numGlyphs, flags, fontDef);
+}
+
+QFontEngine::FaceId QCoreTextFontEngine::faceId() const
+{
+    return QFontEngine::FaceId();
+}
+
+bool QCoreTextFontEngine::canRender(const QChar *string, int len)
+{
+    QVarLengthArray<CGGlyph> cgGlyphs(len);
+    return CTFontGetGlyphsForCharacters(ctfont, (const UniChar *) string, cgGlyphs.data(), len);
+}
+
+bool QCoreTextFontEngine::getSfntTableData(uint tag, uchar *buffer, uint *length) const
+{
+    QCFType<CFDataRef> table = CTFontCopyTable(ctfont, tag, 0);
+    if (!table || !length)
+        return false;
+    CFIndex tableLength = CFDataGetLength(table);
+    int availableLength = *length;
+    *length = tableLength;
+    if (buffer) {
+        if (tableLength > availableLength)
+            return false;
+        CFDataGetBytes(table, CFRangeMake(0, tableLength), buffer);
+    }
+    return true;
+}
+
+void QCoreTextFontEngine::getUnscaledGlyph(glyph_t, QPainterPath *, glyph_metrics_t *)
+{
+    // ###
+}
+
+QFixed QCoreTextFontEngine::emSquareSize() const
+{
+    return QFixed::QFixed(int(CTFontGetUnitsPerEm(ctfont)));
+}
+
+QFontEngine *QCoreTextFontEngine::cloneWithSize(qreal pixelSize) const
+{
+    QFontDef newFontDef = fontDef;
+    newFontDef.pixelSize = pixelSize;
+    newFontDef.pointSize = pixelSize * 72.0 / qt_defaultDpi();
+
+    return new QCoreTextFontEngine(cgFont, newFontDef);
+}
+
+QT_END_NAMESPACE
+
+#endif// !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+
diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h b/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h
new file mode 100644
index 0000000000..e89d42f0d0
--- /dev/null
+++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h
@@ -0,0 +1,155 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFONTENGINE_CORETEXT_P_H
+#define QFONTENGINE_CORETEXT_P_H
+
+#include <private/qfontengine_p.h>
+#include <private/qcore_mac_p.h>
+#include <ApplicationServices/ApplicationServices.h>
+
+#if !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QRawFontPrivate;
+class QCoreTextFontEngineMulti;
+class QCoreTextFontEngine : public QFontEngine
+{
+public:
+    QCoreTextFontEngine(CTFontRef font, const QFontDef &def);
+    QCoreTextFontEngine(CGFontRef font, const QFontDef &def);
+    ~QCoreTextFontEngine();
+
+    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const;
+    virtual void recalcAdvances(QGlyphLayout *, QTextEngine::ShaperFlags) const;
+
+    virtual glyph_metrics_t boundingBox(const QGlyphLayout &glyphs);
+    virtual glyph_metrics_t boundingBox(glyph_t glyph);
+
+    virtual QFixed ascent() const;
+    virtual QFixed descent() const;
+    virtual QFixed leading() const;
+    virtual QFixed xHeight() const;
+    virtual qreal maxCharWidth() const;
+    virtual QFixed averageCharWidth() const;
+
+    virtual void addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int numGlyphs,
+                                 QPainterPath *path, QTextItem::RenderFlags);
+
+    virtual const char *name() const { return "QCoreTextFontEngine"; }
+
+    virtual bool canRender(const QChar *string, int len);
+
+    virtual int synthesized() const { return synthesisFlags; }
+    virtual bool supportsSubPixelPositions() const { return true; }
+
+    virtual Type type() const { return QFontEngine::Mac; }
+
+    void draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight);
+
+    virtual FaceId faceId() const;
+    virtual bool getSfntTableData(uint /*tag*/, uchar * /*buffer*/, uint * /*length*/) const;
+    virtual void getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics);
+    virtual QImage alphaMapForGlyph(glyph_t, QFixed subPixelPosition);
+    virtual QImage alphaRGBMapForGlyph(glyph_t, QFixed subPixelPosition, int margin, const QTransform &t);
+    virtual qreal minRightBearing() const;
+    virtual qreal minLeftBearing() const;
+    virtual QFixed emSquareSize() const;
+
+    virtual QFontEngine *cloneWithSize(qreal pixelSize) const;
+
+private:
+    friend class QRawFontPrivate;
+
+    void init();
+    QImage imageForGlyph(glyph_t glyph, QFixed subPixelPosition, int margin, bool colorful);
+    CTFontRef ctfont;
+    CGFontRef cgFont;
+    int synthesisFlags;
+    CGAffineTransform transform;
+    QFixed avgCharWidth;
+    friend class QCoreTextFontEngineMulti;
+};
+
+class QCoreTextFontEngineMulti : public QFontEngineMulti
+{
+public:
+    QCoreTextFontEngineMulti(const QCFString &name, const QFontDef &fontDef, bool kerning);
+    QCoreTextFontEngineMulti(CTFontRef ctFontRef, const QFontDef &fontDef, bool kerning);
+    ~QCoreTextFontEngineMulti();
+
+    virtual bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs,
+                              QTextEngine::ShaperFlags flags) const;
+    bool stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, int *nglyphs,
+                      QTextEngine::ShaperFlags flags,
+                      unsigned short *logClusters, const HB_CharAttributes *charAttributes,
+                      QScriptItem *si) const;
+
+    virtual const char *name() const { return "CoreText"; }
+    inline CTFontRef macFontID() const { return ctfont; }
+
+protected:
+    virtual void loadEngine(int at);
+
+private:
+    void init(bool kerning);
+    inline const QCoreTextFontEngine *engineAt(int i) const
+    { return static_cast<const QCoreTextFontEngine *>(engines.at(i)); }
+
+    uint fontIndexForFont(CTFontRef font) const;
+    CTFontRef ctfont;
+    mutable QCFType<CFMutableDictionaryRef> attributeDict;
+    CGAffineTransform transform;
+    friend class QFontDialogPrivate;
+};
+
+CGAffineTransform qt_transform_from_fontdef(const QFontDef &fontDef);
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif// !defined(Q_WS_MAC) || (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5)
+
+#endif // QFONTENGINE_CORETEXT_P_H