More culling of Panther Code.

Removed lots of places where we check for Tiger. Now we can assume it.

Reviewed-by: Morten Sørvig

17 files changed, 228 insertions, 646 deletions

diff --git a/src/gui/accessible/qaccessible_mac.mm b/src/gui/accessible/qaccessible_mac.mm
index 65f9ab9..5646300 100644
--- a/src/gui/accessible/qaccessible_mac.mm
+++ b/src/gui/accessible/qaccessible_mac.mm
@@ -1232,10 +1232,8 @@ static int textForRoleAndAttribute(QAccessible::Role role, CFStringRef attribute
         return QAccessible::Value;
     else if (CFStringCompare(attribute, CFStringRef(QAXHelpAttribute), 0) == kCFCompareEqualTo)
         return QAccessible::Help;
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     else if (CFStringCompare(attribute, CFStringRef(QAXDescriptionAttribute), 0) == kCFCompareEqualTo)
         return QAccessible::Description;
-#endif
     else
         return -1;
 }
@@ -1442,17 +1440,13 @@ static OSStatus getAllAttributeNames(EventRef event, const QAInterface &interfac
     qt_mac_append_cf_uniq(attrs, CFStringRef(QAXRoleAttribute));
     qt_mac_append_cf_uniq(attrs, CFStringRef(QAXEnabledAttribute));
     qt_mac_append_cf_uniq(attrs, CFStringRef(QAXWindowAttribute));
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     qt_mac_append_cf_uniq(attrs, CFStringRef(QAXTopLevelUIElementAttribute));
-#endif
 
     // Append these names if the QInterafceItem returns any data for them.
     appendIfSupported(attrs, CFStringRef(QAXTitleAttribute), interface);
     appendIfSupported(attrs, CFStringRef(QAXValueAttribute), interface);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     appendIfSupported(attrs, CFStringRef(QAXDescriptionAttribute), interface);
     appendIfSupported(attrs, CFStringRef(QAXLinkedUIElementsAttribute), interface);
-#endif
     appendIfSupported(attrs, CFStringRef(QAXHelpAttribute), interface);
     appendIfSupported(attrs, CFStringRef(QAXTitleUIElementAttribute), interface);
     appendIfSupported(attrs, CFStringRef(QAXChildrenAttribute), interface);
@@ -1705,12 +1699,10 @@ static OSStatus handleWindowAttribute(EventHandlerCallRef next_ref, EventRef eve
     Returns the top-level window for an interface, which is the closest ancestor interface that
     has the Window role. (Can also be a sheet or a drawer)
 */
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
 static OSStatus handleTopLevelUIElementAttribute(EventHandlerCallRef next_ref, EventRef event, const QAInterface &interface)
 {
     return navigateAncestors<IsWindowTest>(next_ref, event, interface, CFStringRef(QAXTopLevelUIElementAttribute));
 }
-#endif
 
 /*
     Returns the tab buttons for an interface.
@@ -1888,10 +1880,8 @@ static OSStatus getNamedAttribute(EventHandlerCallRef next_ref, EventRef event,
 
     if (CFStringCompare(var, CFStringRef(QAXChildrenAttribute), 0) == kCFCompareEqualTo) {
         return handleChildrenAttribute(next_ref, event, interface);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     } else if(CFStringCompare(var, CFStringRef(QAXTopLevelUIElementAttribute), 0) == kCFCompareEqualTo) {
         return handleTopLevelUIElementAttribute(next_ref, event, interface);
-#endif
     } else if(CFStringCompare(var, CFStringRef(QAXWindowAttribute), 0) == kCFCompareEqualTo) {
         return handleWindowAttribute(next_ref, event, interface);
     } else if(CFStringCompare(var, CFStringRef(QAXParentAttribute), 0) == kCFCompareEqualTo) {
@@ -1981,7 +1971,7 @@ static OSStatus getNamedAttribute(EventHandlerCallRef next_ref, EventRef event,
     } else if (CFStringCompare(var, CFStringRef(QAXSubroleAttribute), 0) == kCFCompareEqualTo) {
         return handleSubroleAttribute(next_ref, event, interface);
     } else if (CFStringCompare(var, CFStringRef(QAXRoleDescriptionAttribute), 0) == kCFCompareEqualTo) {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4) && !defined(QT_MAC_USE_COCOA)
+#if !defined(QT_MAC_USE_COCOA)
         if (HICopyAccessibilityRoleDescription) {
             const CFStringRef roleDescription = HICopyAccessibilityRoleDescription(macRole(interface), 0);
             SetEventParameter(event, kEventParamAccessibleAttributeValue, typeCFStringRef,
@@ -2005,14 +1995,12 @@ static OSStatus getNamedAttribute(EventHandlerCallRef next_ref, EventRef event,
         } else {
             handleStringAttribute(event, text, interface);
         }
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     } else if (CFStringCompare(var, CFStringRef(QAXDescriptionAttribute), 0) == kCFCompareEqualTo) {
         const QAccessible::Role role = interface.role();
         const QAccessible::Text text = (QAccessible::Text)textForRoleAndAttribute(role, var);
         handleStringAttribute(event, text, interface);
     } else if (CFStringCompare(var, CFStringRef(QAXLinkedUIElementsAttribute), 0) == kCFCompareEqualTo) {
         return CallNextEventHandler(next_ref, event);
-#endif
     } else if (CFStringCompare(var, CFStringRef(QAXHelpAttribute), 0) == kCFCompareEqualTo) {
         const QAccessible::Role role = interface.role();
         const QAccessible::Text text = (QAccessible::Text)textForRoleAndAttribute(role, var);
diff --git a/src/gui/dialogs/qwizard.cpp b/src/gui/dialogs/qwizard.cpp
index a2dfa52..3fdea54 100644
--- a/src/gui/dialogs/qwizard.cpp
+++ b/src/gui/dialogs/qwizard.cpp
@@ -1632,66 +1632,6 @@ void QWizardPrivate::setStyle(QStyle *style)
 
 #ifdef Q_WS_MAC
 
-#ifdef Q_WS_MAC32
-QT_BEGIN_INCLUDE_NAMESPACE
-#include <QuickTime/QuickTime.h>
-QT_END_INCLUDE_NAMESPACE
-typedef OSErr (*PtrQTNewDataReferenceFromCFURL)(CFURLRef, UInt32, Handle*, OSType*);
-typedef OSErr (*PtrGetGraphicsImporterForDataRefWithFlags)(Handle, OSType, ComponentInstance*, long);
-typedef ComponentResult (*PtrGraphicsImportSetFlags)(GraphicsImportComponent, long);
-typedef ComponentResult (*PtrGraphicsImportCreateCGImage)(GraphicsImportComponent, CGImageRef*, UInt32);
-
-static PtrQTNewDataReferenceFromCFURL ptrQTNewDataReferenceFromCFURL = 0;
-static PtrGetGraphicsImporterForDataRefWithFlags ptrGetGraphicsImporterForDataRefWithFlags = 0;
-static PtrGraphicsImportSetFlags ptrGraphicsImportSetFlags = 0;
-static PtrGraphicsImportCreateCGImage ptrGraphicsImportCreateCGImage = 0;
-
-static bool resolveQuickTimeSymbols()
-{
-    if (ptrQTNewDataReferenceFromCFURL == 0) {
-        QLibrary library(QLatin1String("/System/Library/Frameworks/QuickTime.framework/QuickTime"));
-        ptrQTNewDataReferenceFromCFURL = reinterpret_cast<PtrQTNewDataReferenceFromCFURL>(library.resolve("QTNewDataReferenceFromCFURL"));
-        ptrGetGraphicsImporterForDataRefWithFlags = reinterpret_cast<PtrGetGraphicsImporterForDataRefWithFlags>(library.resolve("GetGraphicsImporterForDataRefWithFlags"));
-        ptrGraphicsImportSetFlags = reinterpret_cast<PtrGraphicsImportSetFlags>(library.resolve("GraphicsImportSetFlags"));
-        ptrGraphicsImportCreateCGImage = reinterpret_cast<PtrGraphicsImportCreateCGImage>(library.resolve("GraphicsImportCreateCGImage"));
-    }
-
-    return ptrQTNewDataReferenceFromCFURL != 0 && ptrGetGraphicsImporterForDataRefWithFlags != 0
-           && ptrGraphicsImportSetFlags != 0 && ptrGraphicsImportCreateCGImage != 0;
-}
-
-
-static QPixmap quicktimeTiff(const CFURLRef url)
-{
-    if (!resolveQuickTimeSymbols())
-        return QPixmap();
-
-    QCFType <CGImageRef> imageRef = 0;
-    Handle dataRef;
-    OSType dataRefType;
-    GraphicsImportComponent gi;
-    ComponentResult result;
-    result = ptrQTNewDataReferenceFromCFURL(url, 0, &dataRef, &dataRefType);
-    if (dataRef != 0) {
-        OSStatus err = ptrGetGraphicsImporterForDataRefWithFlags(dataRef, dataRefType, &gi, 0);
-        if (err == noErr && gi) {
-            result = ptrGraphicsImportSetFlags(gi, (kGraphicsImporterDontDoGammaCorrection
-                                                    + kGraphicsImporterDontUseColorMatching));
-            if (!result)
-                result = ptrGraphicsImportCreateCGImage(gi, &imageRef, 0);
-            if (result)
-                qWarning("Qt: Problem reading TIFF image %ld(%s:%d)", result, __FILE__, __LINE__);
-            DisposeHandle(dataRef);
-            CloseComponent(gi);
-        }
-    }
-
-    if (imageRef)
-        return QPixmap::fromMacCGImageRef(imageRef);
-    return QPixmap();
-}
-#endif // Q_WS_MAC32
-
 QPixmap QWizardPrivate::findDefaultBackgroundPixmap()
 {
     QCFType<CFURLRef> url;
@@ -1703,22 +1643,13 @@ QPixmap QWizardPrivate::findDefaultBackgroundPixmap()
         if (bundle) {
             url = CFBundleCopyResourceURL(bundle, CFSTR("Background"), CFSTR("tif"), 0);
             if (url) {
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-                if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-                    QCFType<CGImageSourceRef> imageSource = CGImageSourceCreateWithURL(url, 0);
-                    QCFType<CGImageRef> image = CGImageSourceCreateImageAtIndex(imageSource, 0, 0);
-                    if (image) {
-                        int width = CGImageGetWidth(image);
-                        int height = CGImageGetHeight(image);
-                        if (width == ExpectedImageWidth && height == ExpectedImageHeight)
-                            return QPixmap::fromMacCGImageRef(image);
-                    }
-                } else
-#endif
-                {
-#ifdef Q_WS_MAC32
-                    return quicktimeTiff(url);
-#endif
+                QCFType<CGImageSourceRef> imageSource = CGImageSourceCreateWithURL(url, 0);
+                QCFType<CGImageRef> image = CGImageSourceCreateImageAtIndex(imageSource, 0, 0);
+                if (image) {
+                    int width = CGImageGetWidth(image);
+                    int height = CGImageGetHeight(image);
+                    if (width == ExpectedImageWidth && height == ExpectedImageHeight)
+                        return QPixmap::fromMacCGImageRef(image);
                 }
             }
         }
diff --git a/src/gui/image/qicon.cpp b/src/gui/image/qicon.cpp
index edae29a..fa407c7 100644
--- a/src/gui/image/qicon.cpp
+++ b/src/gui/image/qicon.cpp
@@ -54,7 +54,7 @@
 
 #ifdef Q_WS_MAC
 #include <private/qt_mac_p.h>
-#include <Carbon/Carbon.h>
+#include <private/qt_cocoa_helpers_mac_p.h>
 #endif
 
 QT_BEGIN_NAMESPACE
@@ -178,8 +178,8 @@ QPixmapIconEngine::~QPixmapIconEngine()
 void QPixmapIconEngine::paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state)
 {
     QSize pixmapSize = rect.size();
-#if defined(Q_WS_MAC) && !defined(Q_WS_MAC64)
-    pixmapSize *= (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) ? HIGetScaleFactor() : 1;
+#if defined(Q_WS_MAC)
+    pixmapSize *= qt_mac_get_scalefactor();
 #endif
     painter->drawPixmap(rect, pixmap(pixmapSize, mode, state));
 }
diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp
index bfe5dfe..e3fb27a 100644
--- a/src/gui/image/qnativeimage.cpp
+++ b/src/gui/image/qnativeimage.cpp
@@ -236,8 +236,7 @@ QNativeImage::QNativeImage(int width, int height, QImage::Format format, bool /*
     uint cgflags = kCGImageAlphaNoneSkipFirst;
 
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
 
     cg = CGBitmapContextCreate(image.bits(), width, height, 8, image.bytesPerLine(), cgColorSpace, cgflags);
diff --git a/src/gui/image/qpixmap_mac.cpp b/src/gui/image/qpixmap_mac.cpp
index b40694a..c281fe9 100644
--- a/src/gui/image/qpixmap_mac.cpp
+++ b/src/gui/image/qpixmap_mac.cpp
@@ -119,14 +119,9 @@ CGImageRef qt_mac_image_to_cgimage(const QImage &image)
         CGDataProviderCreateWithData(0, image.bits(), image.bytesPerLine() * image.height(),
                                      0);
 
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     uint cgflags = kCGImageAlphaPremultipliedFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-    CGImageAlphaInfo cgflags = kCGImageAlphaPremultipliedFirst;
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
 
     CGImageRef cgImage = CGImageCreate(image.width(), image.height(), bitsPerColor, bitsPerPixel,
@@ -645,14 +640,9 @@ void QMacPixmapData::macCreateCGImageRef()
                                                               pixels, bytesPerRow * h,
                                                               qt_mac_cgimage_data_free);
     validDataPointers.insert(this);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     uint cgflags = kCGImageAlphaPremultipliedFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-    CGImageAlphaInfo cgflags = kCGImageAlphaPremultipliedFirst;
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
     cg_data = CGImageCreate(w, h, 8, 32, bytesPerRow, colorspace,
                             cgflags, provider, 0, 0, kCGRenderingIntentDefault);
@@ -893,38 +883,6 @@ static void qt_mac_grabDisplayRect(CGDirectDisplayID display, const QRect &displ
     ptrCGLDestroyContext(glContextObj); // and destroy the context
 }
 
-static CGImageRef qt_mac_createImageFromBitmapContext(CGContextRef c)
-{
-    void *rasterData = CGBitmapContextGetData(c);
-    const int width = CGBitmapContextGetBytesPerRow(c),
-             height = CGBitmapContextGetHeight(c);
-    size_t imageDataSize = width*height;
-
-    if(!rasterData)
-        return 0;
-
-    // Create the data provider from the image data, using
-    // the image releaser function releaseBitmapContextImageData.
-    CGDataProviderRef dataProvider = CGDataProviderCreateWithData(0, rasterData,
-                                                                  imageDataSize,
-                                                                  qt_mac_cgimage_data_free);
-
-    if(!dataProvider)
-        return 0;
-
-    uint bitmapInfo = 0;
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-    if(CGBitmapContextGetBitmapInfo)
-        bitmapInfo = CGBitmapContextGetBitmapInfo(c);
-    else
-#endif
-        bitmapInfo = CGBitmapContextGetAlphaInfo(c);
-    return CGImageCreate(width, height, CGBitmapContextGetBitsPerComponent(c),
-                         CGBitmapContextGetBitsPerPixel(c), CGBitmapContextGetBytesPerRow(c),
-                         CGBitmapContextGetColorSpace(c), bitmapInfo, dataProvider,
-                         0, true, kCGRenderingIntentDefault);
-}
-
 // Returns a pixmap containing the screen contents at rect.
 static QPixmap qt_mac_grabScreenRect(const QRect &rect)
 {
@@ -958,19 +916,8 @@ static QPixmap qt_mac_grabScreenRect(const QRect &rect)
                                                          rect.height(), 8, bytewidth,
                                         QCoreGraphicsPaintEngine::macGenericColorSpace(),
                                         kCGImageAlphaNoneSkipFirst);
-
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        QCFType<CGImageRef> image = CGBitmapContextCreateImage(bitmap);
-        return QPixmap::fromMacCGImageRef(image);
-    } else
-#endif
-    {
-        QCFType<CGImageRef> image = qt_mac_createImageFromBitmapContext(bitmap);
-        if (!image)
-            return QPixmap();
-        return QPixmap::fromMacCGImageRef(image);
-    }
+    QCFType<CGImageRef> image = CGBitmapContextCreateImage(bitmap);
+    return QPixmap::fromMacCGImageRef(image);
 }
 
 #ifndef QT_MAC_USE_COCOA // no QuickDraw in 64-bit mode
@@ -1043,18 +990,12 @@ Qt::HANDLE QPixmap::macQDHandle() const
         SetRect(&rect, 0, 0, d->w, d->h);
         unsigned long qdformat = k32ARGBPixelFormat;
         GWorldFlags qdflags = 0;
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-            //we play such games so we can use the same buffer in CG as QD this
-            //makes our merge much simpler, at some point the hacks will go away
-            //because QD will be removed, but until that day this keeps them coexisting
-            if (QSysInfo::ByteOrder == QSysInfo::LittleEndian)
-                qdformat = k32BGRAPixelFormat;
-#if 0
-            qdflags |= kNativeEndianPixMap;
-#endif
-        }
-#endif
+        //we play such games so we can use the same buffer in CG as QD this
+        //makes our merge much simpler, at some point the hacks will go away
+        //because QD will be removed, but until that day this keeps them coexisting
+        if (QSysInfo::ByteOrder == QSysInfo::LittleEndian)
+            qdformat = k32BGRAPixelFormat;
+
         if(NewGWorldFromPtr(&d->qd_data, qdformat, &rect, 0, 0, qdflags,
                             (char*)d->pixels, d->bytesPerRow) != noErr)
             qWarning("Qt: internal: QPixmap::init error (%d %d %d %d)", rect.left, rect.top, rect.right, rect.bottom);
diff --git a/src/gui/kernel/qmime_mac.cpp b/src/gui/kernel/qmime_mac.cpp
index ebacc2f..31c66e4 100644
--- a/src/gui/kernel/qmime_mac.cpp
+++ b/src/gui/kernel/qmime_mac.cpp
@@ -68,11 +68,6 @@
 #include "qmap.h"
 #include <private/qt_mac_p.h>
 
-#ifdef Q_WS_MAC32
-#include <QuickTime/QuickTime.h>
-#include "qlibrary.h"
-#endif
-
 QT_BEGIN_NAMESPACE
 
 extern CGImageRef qt_mac_createCGImageFromQImage(const QImage &img, const QImage **imagePtr = 0); // qpaintengine_mac.cpp
@@ -507,6 +502,9 @@ QList<QByteArray> QMacPasteboardMimeHTMLText::convertFromMime(const QString &mim
 
 #ifdef Q_WS_MAC32
 
+#include <QuickTime/QuickTime.h>
+#include <qlibrary.h>
+
 typedef ComponentResult (*PtrGraphicsImportSetDataHandle)(GraphicsImportComponent, Handle);
 typedef ComponentResult (*PtrGraphicsImportCreateCGImage)(GraphicsImportComponent, CGImageRef*, UInt32);
 typedef ComponentResult (*PtrGraphicsExportSetInputCGImage)(GraphicsExportComponent, CGImageRef);
@@ -684,33 +682,11 @@ QVariant QMacPasteboardMimeTiff::convertToMime(const QString &mime, QList<QByteA
         return ret;
     const QByteArray &a = data.first();
     QCFType<CGImageRef> image;
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        QCFType<CFDataRef> data = CFDataCreateWithBytesNoCopy(0,
-                                                    reinterpret_cast<const UInt8 *>(a.constData()),
-                                                    a.size(), kCFAllocatorNull);
-        QCFType<CGImageSourceRef> imageSource = CGImageSourceCreateWithData(data, 0);
-        image = CGImageSourceCreateImageAtIndex(imageSource, 0, 0);
-    } else
-#endif
-    {
-#ifdef Q_WS_MAC32
-        if (resolveMimeQuickTimeSymbols()) {
-            Handle tiff = NewHandle(a.size());
-            memcpy(*tiff, a.constData(), a.size());
-            GraphicsImportComponent graphicsImporter;
-            ComponentResult result = OpenADefaultComponent(GraphicsImporterComponentType,
-                                                           kQTFileTypeTIFF, &graphicsImporter);
-            if (!result)
-                result = ptrGraphicsImportSetDataHandle(graphicsImporter, tiff);
-            if (!result)
-                result = ptrGraphicsImportCreateCGImage(graphicsImporter, &image,
-                                                     kGraphicsImportCreateCGImageUsingCurrentSettings);
-            CloseComponent(graphicsImporter);
-            DisposeHandle(tiff);
-        }
-#endif
-    }
+    QCFType<CFDataRef> tiffData = CFDataCreateWithBytesNoCopy(0,
+                                                reinterpret_cast<const UInt8 *>(a.constData()),
+                                                a.size(), kCFAllocatorNull);
+    QCFType<CGImageSourceRef> imageSource = CGImageSourceCreateWithData(tiffData, 0);
+    image = CGImageSourceCreateImageAtIndex(imageSource, 0, 0);
 
     if (image != 0)
         ret = QVariant(QPixmap::fromMacCGImageRef(image).toImage());
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac.mm b/src/gui/kernel/qt_cocoa_helpers_mac.mm
index 5e5e0dc..f5f381e 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac.mm
+++ b/src/gui/kernel/qt_cocoa_helpers_mac.mm
@@ -1166,4 +1166,13 @@ CGContextRef qt_mac_graphicsContextFor(QWidget *widget)
     return context;
 }
 
+CGFloat qt_mac_get_scalefactor()
+{
+#ifndef QT_MAC_USE_COCOA
+    return HIGetScaleFactor();
+#else
+    return [[NSScreen mainScreen] userSpaceScaleFactor];
+#endif
+}
+
 QT_END_NAMESPACE
diff --git a/src/gui/kernel/qt_cocoa_helpers_mac_p.h b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
index 5156b9c..7b975f5 100644
--- a/src/gui/kernel/qt_cocoa_helpers_mac_p.h
+++ b/src/gui/kernel/qt_cocoa_helpers_mac_p.h
@@ -161,6 +161,8 @@ void *qt_mac_QStringListToNSMutableArrayVoid(const QStringList &list);
 
 void qt_syncCocoaTitleBarButtons(OSWindowRef window, QWidget *widgetForWindow);
 
+CGFloat qt_mac_get_scalefactor();
+
 #ifdef __OBJC__
 inline NSMutableArray *qt_mac_QStringListToNSMutableArray(const QStringList &qstrlist)
 { return reinterpret_cast<NSMutableArray *>(qt_mac_QStringListToNSMutableArrayVoid(qstrlist)); }
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index a75c2a3..88dc73f 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -505,16 +505,9 @@ static void qt_mac_release_window_group(WindowGroupRef group)
 SInt32 qt_mac_get_group_level(WindowClass wclass)
 {
     SInt32 group_level;
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        CGWindowLevel tmpLevel;
-        GetWindowGroupLevelOfType(GetWindowGroupOfClass(wclass), kWindowGroupLevelActive, &tmpLevel);
-        group_level = tmpLevel;
-    } else
-#endif
-    {
-        GetWindowGroupLevel(GetWindowGroupOfClass(wclass), &group_level);
-    }
+    CGWindowLevel tmpLevel;
+    GetWindowGroupLevelOfType(GetWindowGroupOfClass(wclass), kWindowGroupLevelActive, &tmpLevel);
+    group_level = tmpLevel;
     return group_level;
 }
 #endif
@@ -736,11 +729,8 @@ static EventTypeSpec window_events[] = {
     { kEventClassWindow, kEventWindowProxyEndDrag },
     { kEventClassWindow, kEventWindowResizeCompleted },
     { kEventClassWindow, kEventWindowBoundsChanging },
-    { kEventClassWindow, kEventWindowBoundsChanged },
     { kEventClassWindow, kEventWindowGetRegion },
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
     { kEventClassWindow, kEventWindowGetClickModality },
-#endif
     { kEventClassWindow, kEventWindowTransitionCompleted },
     { kEventClassMouse, kEventMouseDown }
 };
@@ -770,7 +760,6 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
         QWidget *widget = qt_mac_find_window(wid);
         if(!widget) {
             handled_event = false;
-#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
         } else if(ekind == kEventWindowGetClickModality) {
             // Carbon will send us kEventWindowGetClickModality before every
             // mouse press / release event. By returning 'true', we tell Carbon
@@ -781,7 +770,6 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
             // By also setting the current modal window back into the event, we
             // help Carbon determining which window is supposed to be raised.
             handled_event = qApp->activePopupWidget() ? true : false;
-#endif
         } else if(ekind == kEventWindowClose) {
             widget->d_func()->close_helper(QWidgetPrivate::CloseWithSpontaneousEvent);
             QMenuBar::macUpdateMenuBar();
@@ -904,87 +892,78 @@ OSStatus QWidgetPrivate::qt_window_event(EventHandlerCallRef er, EventRef event,
             SetEventParameter(mouseUpEvent, kEventParamMouseLocation, typeQDPoint, sizeof(pos), &pos);
             SendEventToApplication(mouseUpEvent);
             ReleaseEvent(mouseUpEvent);
-        } else if(ekind == kEventWindowBoundsChanging || ekind == kEventWindowBoundsChanged) {
-            // Panther doesn't send Changing for sheets, only changed, so only
-            // bother handling Changed event if we are on 10.3 and we are a
-            // sheet.
-            if (ekind == kEventWindowBoundsChanged
-                    && (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4
-                        || !(widget->windowFlags() & Qt::Sheet))) {
-                handled_event = false;
+        } else if(ekind == kEventWindowBoundsChanging) {
+            UInt32 flags = 0;
+            GetEventParameter(event, kEventParamAttributes, typeUInt32, 0,
+                                  sizeof(flags), 0, &flags);
+            Rect nr;
+            GetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, 0,
+                                  sizeof(nr), 0, &nr);
+
+            QRect newRect(nr.left, nr.top, nr.right - nr.left, nr.bottom - nr.top);
+
+            QTLWExtra * const tlwExtra = widget->d_func()->maybeTopData();
+            if (tlwExtra && tlwExtra->isSetGeometry == 1) {
+                widget->d_func()->setGeometry_sys_helper(newRect.left(), newRect.top(), newRect.width(), newRect.height(), tlwExtra->isMove);
             } else {
-                UInt32 flags = 0;
-                GetEventParameter(event, kEventParamAttributes, typeUInt32, 0,
-                                      sizeof(flags), 0, &flags);
-                Rect nr;
-                GetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, 0,
-                                      sizeof(nr), 0, &nr);
-
-                QRect newRect(nr.left, nr.top, nr.right - nr.left, nr.bottom - nr.top);
-
-                QTLWExtra * const tlwExtra = widget->d_func()->maybeTopData();
-                if (tlwExtra && tlwExtra->isSetGeometry == 1) {
-                    widget->d_func()->setGeometry_sys_helper(newRect.left(), newRect.top(), newRect.width(), newRect.height(), tlwExtra->isMove);
-                } else {
-                    //implicitly removes the maximized bit
-                    if((widget->data->window_state & Qt::WindowMaximized) &&
-                       IsWindowInStandardState(wid, 0, 0)) {
-                        widget->data->window_state &= ~Qt::WindowMaximized;
-                        QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state
-                                                    | Qt::WindowMaximized));
-                        QApplication::sendSpontaneousEvent(widget, &e);
+                //implicitly removes the maximized bit
+                if((widget->data->window_state & Qt::WindowMaximized) &&
+                   IsWindowInStandardState(wid, 0, 0)) {
+                    widget->data->window_state &= ~Qt::WindowMaximized;
+                    QWindowStateChangeEvent e(Qt::WindowStates(widget->data->window_state
+                                                | Qt::WindowMaximized));
+                    QApplication::sendSpontaneousEvent(widget, &e);
 
-                    }
+                }
 
-                    handled_event = false;
-                    const QRect oldRect = widget->data->crect;
-                    if((flags & kWindowBoundsChangeOriginChanged)) {
-                        if(nr.left != oldRect.x() || nr.top != oldRect.y()) {
-                            widget->data->crect.moveTo(nr.left, nr.top);
-                            QMoveEvent qme(widget->data->crect.topLeft(), oldRect.topLeft());
-                            QApplication::sendSpontaneousEvent(widget, &qme);
-                        }
+                handled_event = false;
+                const QRect oldRect = widget->data->crect;
+                if((flags & kWindowBoundsChangeOriginChanged)) {
+                    if(nr.left != oldRect.x() || nr.top != oldRect.y()) {
+                        widget->data->crect.moveTo(nr.left, nr.top);
+                        QMoveEvent qme(widget->data->crect.topLeft(), oldRect.topLeft());
+                        QApplication::sendSpontaneousEvent(widget, &qme);
                     }
-                    if((flags & kWindowBoundsChangeSizeChanged)) {
-                        if (widget->isWindow()) {
-                            QSize newSize = QLayout::closestAcceptableSize(widget, newRect.size());
-                            int dh = newSize.height() - newRect.height();
-                            int dw = newSize.width() - newRect.width();
-                            if (dw != 0 || dh != 0) {
-                                handled_event = true;  // We want to change the bounds, so we handle the event
-
-                                // set the rect, so we can also do the resize down below (yes, we need to resize).
-                                newRect.setBottom(newRect.bottom() + dh);
-                                newRect.setRight(newRect.right() + dw);
-
-                                nr.left = newRect.x();
-                                nr.top = newRect.y();
-                                nr.right = nr.left + newRect.width();
-                                nr.bottom = nr.top + newRect.height();
-                                SetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, sizeof(Rect), &nr);
-                            }
+                }
+                if((flags & kWindowBoundsChangeSizeChanged)) {
+                    if (widget->isWindow()) {
+                        QSize newSize = QLayout::closestAcceptableSize(widget, newRect.size());
+                        int dh = newSize.height() - newRect.height();
+                        int dw = newSize.width() - newRect.width();
+                        if (dw != 0 || dh != 0) {
+                            handled_event = true;  // We want to change the bounds, so we handle the event
+
+                            // set the rect, so we can also do the resize down below (yes, we need to resize).
+                            newRect.setBottom(newRect.bottom() + dh);
+                            newRect.setRight(newRect.right() + dw);
+
+                            nr.left = newRect.x();
+                            nr.top = newRect.y();
+                            nr.right = nr.left + newRect.width();
+                            nr.bottom = nr.top + newRect.height();
+                            SetEventParameter(event, kEventParamCurrentBounds, typeQDRectangle, sizeof(Rect), &nr);
                         }
+                    }
 
-                        if (oldRect.width() != newRect.width() || oldRect.height() != newRect.height()) {
-                            widget->data->crect.setSize(newRect.size());
-                            HIRect bounds = CGRectMake(0, 0, newRect.width(), newRect.height());
-
-                            // If the WA_StaticContents attribute is set we can optimize the resize
-                            // by only repainting the newly exposed area. We do this by disabling
-                            // painting when setting the size of the view. The OS will invalidate
-                            // the newly exposed area for us.
-                            const bool staticContents = widget->testAttribute(Qt::WA_StaticContents);
-                            const HIViewRef view = qt_mac_nativeview_for(widget);
-                            if (staticContents)
-                                HIViewSetDrawingEnabled(view, false);
-                            HIViewSetFrame(view, &bounds);
-                            if (staticContents)
-                                HIViewSetDrawingEnabled(view, true);
-
-                            QResizeEvent qre(newRect.size(), oldRect.size());
-                            QApplication::sendSpontaneousEvent(widget, &qre);
-                            qt_event_request_window_change(widget);
-                        }
+                    if (oldRect.width() != newRect.width() || oldRect.height() != newRect.height()) {
+                        widget->data->crect.setSize(newRect.size());
+                        HIRect bounds = CGRectMake(0, 0, newRect.width(), newRect.height());
+
+                        // If the WA_StaticContents attribute is set we can optimize the resize
+                        // by only repainting the newly exposed area. We do this by disabling
+                        // painting when setting the size of the view. The OS will invalidate
+                        // the newly exposed area for us.
+                        const bool staticContents = widget->testAttribute(Qt::WA_StaticContents);
+                        const HIViewRef view = qt_mac_nativeview_for(widget);
+                        if (staticContents)
+                            HIViewSetDrawingEnabled(view, false);
+                        HIViewSetFrame(view, &bounds);
+                        if (staticContents)
+                            HIViewSetDrawingEnabled(view, true);
+
+                        QResizeEvent qre(newRect.size(), oldRect.size());
+                        QApplication::sendSpontaneousEvent(widget, &qre);
+                        qt_event_request_window_change(widget);
                     }
                 }
             }
@@ -1703,17 +1682,11 @@ void QWidgetPrivate::determineWindowClass()
         bool framelessWindow = (flags & Qt::FramelessWindowHint || (customize && !(flags & Qt::WindowTitleHint)));
         if (framelessWindow) {
             if(wclass == kDocumentWindowClass) {
-                if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-                    wattr |= kWindowNoTitleBarAttribute;
-                else
-                    wclass = kPlainWindowClass;
+                wattr |= kWindowNoTitleBarAttribute;
             } else if(wclass == kFloatingWindowClass) {
-                if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-                    wattr |= kWindowNoTitleBarAttribute;
-                else
-                    wclass = kToolbarWindowClass;
+                wattr |= kWindowNoTitleBarAttribute;
             } else if (wclass  == kMovableModalWindowClass) {
-                    wclass = kModalWindowClass;
+                wclass = kModalWindowClass;
             }
         } else {
             if(wclass != kModalWindowClass)
@@ -2011,14 +1984,10 @@ void QWidgetPrivate::finishCreateWindow_sys_Carbon(OSWindowRef windowRef)
     if (!desktop)
         SetAutomaticControlDragTrackingEnabledForWindow(windowRef, true);
     HIWindowChangeFeatures(windowRef, kWindowCanCollapse, 0);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        if (wattr & kWindowHideOnSuspendAttribute)
-            HIWindowChangeAvailability(windowRef, kHIWindowExposeHidden, 0);
-        else
-            HIWindowChangeAvailability(windowRef, 0, kHIWindowExposeHidden);
-    }
-#endif
+    if (wattr & kWindowHideOnSuspendAttribute)
+        HIWindowChangeAvailability(windowRef, kHIWindowExposeHidden, 0);
+    else
+        HIWindowChangeAvailability(windowRef, 0, kHIWindowExposeHidden);
     if ((flags & Qt::WindowStaysOnTopHint))
         ChangeWindowAttributes(windowRef, kWindowNoAttributes, kWindowHideOnSuspendAttribute);
     if (qt_mac_is_macdrawer(q) && parentWidget)
@@ -2906,21 +2875,10 @@ void QWidgetPrivate::setWindowFilePath_sys(const QString &filePath)
     }
     // Set the proxy regardless, since this is our way of clearing it as well, but ignore the
     // return value as well.
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        if (validRef) {
-            status = HIWindowSetProxyFSRef(qt_mac_window_for(q), &ref);
-        } else {
-            status = RemoveWindowProxy(qt_mac_window_for(q));
-        }
+    if (validRef) {
+        status = HIWindowSetProxyFSRef(qt_mac_window_for(q), &ref);
     } else {
-        // Convert to an FSSpec and set it. It's deprecated but it works for where we don't have the other call.
-        if (validRef) {
-            FSSpec fsspec;
-            FSGetCatalogInfo(&ref, kFSCatInfoNone, 0, 0, &fsspec, 0);
-            status = SetWindowProxyFSSpec(qt_mac_window_for(q), &fsspec);
-        } else {
-            status = RemoveWindowProxy(qt_mac_window_for(q));
-        }
+        status = RemoveWindowProxy(qt_mac_window_for(q));
     }
     if (status != noErr)
         qWarning("QWidget::setWindowFilePath: Error setting proxyicon for path (%s):%ld",
@@ -3128,16 +3086,9 @@ void QWidgetPrivate::update_sys(const QRect &r)
         if (updateRedirectedToGraphicsProxyWidget(q, updateRect))
             return;
 #ifndef QT_MAC_USE_COCOA
-#    if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-            dirtyOnWidget += updateRect;
-            HIRect r = CGRectMake(x, y, w, h);
-            HIViewSetNeedsDisplayInRect(qt_mac_nativeview_for(q), &r, true);
-        } else
-    #endif
-        {
-            q->update(QRegion(updateRect));
-        }
+        dirtyOnWidget += updateRect;
+        HIRect r = CGRectMake(x, y, w, h);
+        HIViewSetNeedsDisplayInRect(qt_mac_nativeview_for(q), &r, true);
 #else
         [qt_mac_nativeview_for(q) setNeedsDisplayInRect:NSMakeRect(x, y, w, h)];
 #endif
@@ -4294,32 +4245,14 @@ void QWidgetPrivate::scroll_sys(int dx, int dy, const QRect &r)
     OSViewRef view = qt_mac_nativeview_for(q);
 #ifndef QT_MAC_USE_COCOA
     HIRect scrollrect = CGRectMake(r.x(), r.y(), r.width(), r.height());
-#  if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
-   if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-       OSStatus err = _HIViewScrollRectWithOptions(view, valid_rect ? &scrollrect : 0, dx, dy, kHIViewScrollRectAdjustInvalid);
-       if (err) {
-           // The only parameter that can go wrong, is the rect.
-           qWarning("QWidget::scroll: Your rectangle was too big for the widget, clipping rect");
-           scrollrect = CGRectMake(qMax(r.x(), 0), qMax(r.y(), 0),
-                                   qMin(r.width(), q->width()), qMin(r.height(), q->height()));
-           _HIViewScrollRectWithOptions(view, valid_rect ? &scrollrect : 0, dx, dy, kHIViewScrollRectAdjustInvalid);
-       }
-   } else {
-       if (HIViewGetNeedsDisplay(view)) {
-           q->update(valid_rect ? r : q->rect());
-           return;
-       }
-       HIRect scrollrect = CGRectMake(r.x(), r.y(), r.width(), r.height());
-       OSStatus err = HIViewScrollRect(view, valid_rect ? &scrollrect : 0, dx, dy);
-       if (err) {
-           // The only parameter that can go wrong, is the rect.
-           qWarning("QWidget::scroll: Your rectangle was too big for the widget, clipping rect");
-           scrollrect = CGRectMake(qMax(r.x(), 0), qMax(r.y(), 0),
-                   qMin(r.width(), q->width()), qMin(r.height(), q->height()));
-           HIViewScrollRect(view, valid_rect ? &scrollrect : 0, dx, dy);
-       }
+   OSStatus err = _HIViewScrollRectWithOptions(view, valid_rect ? &scrollrect : 0, dx, dy, kHIViewScrollRectAdjustInvalid);
+   if (err) {
+       // The only parameter that can go wrong, is the rect.
+       qWarning("QWidget::scroll: Your rectangle was too big for the widget, clipping rect");
+       scrollrect = CGRectMake(qMax(r.x(), 0), qMax(r.y(), 0),
+                               qMin(r.width(), q->width()), qMin(r.height(), q->height()));
+       _HIViewScrollRectWithOptions(view, valid_rect ? &scrollrect : 0, dx, dy, kHIViewScrollRectAdjustInvalid);
    }
-#  endif
 #else
     NSRect scrollRect = valid_rect ? NSMakeRect(r.x(), r.y(), r.width(), r.height())
                                    : NSMakeRect(0, 0, q->width(), q->height());
@@ -4860,11 +4793,9 @@ void QWidgetPrivate::macUpdateMetalAttribute()
             if (layout)
                 layout->updateHIToolBarStatus();
             ChangeWindowAttributes(qt_mac_window_for(q), kWindowMetalAttribute, 0);
-            if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-                ChangeWindowAttributes(qt_mac_window_for(q), kWindowMetalNoContentSeparatorAttribute, 0);
+            ChangeWindowAttributes(qt_mac_window_for(q), kWindowMetalNoContentSeparatorAttribute, 0);
         } else {
-            if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-                ChangeWindowAttributes(qt_mac_window_for(q), 0, kWindowMetalNoContentSeparatorAttribute);
+            ChangeWindowAttributes(qt_mac_window_for(q), 0, kWindowMetalNoContentSeparatorAttribute);
             ChangeWindowAttributes(qt_mac_window_for(q), 0, kWindowMetalAttribute);
             if (layout)
                 layout->updateHIToolBarStatus();
diff --git a/src/gui/painting/qpaintdevice_mac.cpp b/src/gui/painting/qpaintdevice_mac.cpp
index 92ca52d..7de56ac 100644
--- a/src/gui/painting/qpaintdevice_mac.cpp
+++ b/src/gui/painting/qpaintdevice_mac.cpp
@@ -142,14 +142,9 @@ Q_GUI_EXPORT CGContextRef qt_mac_cg_context(const QPaintDevice *pdev)
     if (pdev->devType() == QInternal::Pixmap) {
         const QPixmap *pm = static_cast<const QPixmap*>(pdev);
         CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pdev);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
         uint flags = kCGImageAlphaPremultipliedFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-        if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-            flags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-        CGImageAlphaInfo flags = kCGImageAlphaPremultipliedFirst;
+        flags |= kCGBitmapByteOrder32Host;
 #endif
         CGContextRef ret = 0;
 
diff --git a/src/gui/painting/qpaintengine_mac.cpp b/src/gui/painting/qpaintengine_mac.cpp
index 282cce8..793460f 100644
--- a/src/gui/painting/qpaintengine_mac.cpp
+++ b/src/gui/painting/qpaintengine_mac.cpp
@@ -102,14 +102,9 @@ QMacCGContext::QMacCGContext(QPainter *p)
 
         extern CGColorSpaceRef qt_mac_colorSpaceForDeviceType(const QPaintDevice *paintDevice);
         CGColorSpaceRef colorspace = qt_mac_colorSpaceForDeviceType(pe->paintDevice());
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
         uint flags = kCGImageAlphaPremultipliedFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-        if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-            flags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-        CGImageAlphaInfo flags = kCGImageAlphaPremultipliedFirst;
+        flags |= kCGBitmapByteOrder32Host;
 #endif
         const QImage *image = (const QImage *) pe->paintDevice();
 
@@ -528,23 +523,12 @@ static void qt_mac_dispose_pattern(void *info)
 
 inline static QPaintEngine::PaintEngineFeatures qt_mac_cg_features()
 {
-    QPaintEngine::PaintEngineFeatures ret(QPaintEngine::AllFeatures
-                                          & ~QPaintEngine::PaintOutsidePaintEvent
-                                          & ~QPaintEngine::PerspectiveTransform
-                                          & ~QPaintEngine::ConicalGradientFill
-                                          & ~QPaintEngine::LinearGradientFill
-                                          & ~QPaintEngine::RadialGradientFill
-                                          & ~QPaintEngine::BrushStroke);
-
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        ;
-    } else
-#endif
-    {
-        ret &= ~QPaintEngine::BlendModes;
-    }
-    return ret;
+    return QPaintEngine::PaintEngineFeatures(QPaintEngine::AllFeatures & ~QPaintEngine::PaintOutsidePaintEvent
+                                              & ~QPaintEngine::PerspectiveTransform
+                                              & ~QPaintEngine::ConicalGradientFill
+                                              & ~QPaintEngine::LinearGradientFill
+                                              & ~QPaintEngine::RadialGradientFill
+                                              & ~QPaintEngine::BrushStroke);
 }
 
 QCoreGraphicsPaintEngine::QCoreGraphicsPaintEngine()
@@ -994,22 +978,8 @@ void QCoreGraphicsPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, co
         CGContextSetFillColorWithColor(d->hd, cgColorForQColor(col, d->pdev));
         image = qt_mac_create_imagemask(pm, sr);
     } else if (differentSize) {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-            QCFType<CGImageRef> img = pm.toMacCGImageRef();
-            image = CGImageCreateWithImageInRect(img, CGRectMake(qRound(sr.x()), qRound(sr.y()), qRound(sr.width()), qRound(sr.height())));
-        } else
-#endif
-        {
-            const int sx = qRound(sr.x()), sy = qRound(sr.y()), sw = qRound(sr.width()), sh = qRound(sr.height());
-            const QMacPixmapData *pmData = static_cast<const QMacPixmapData*>(pm.data);
-            quint32 *pantherData = pmData->pixels + sy * (pmData->bytesPerRow / 4) + sx;
-            QCFType<CGDataProviderRef> provider = CGDataProviderCreateWithData(0, pantherData, sw*sh*pmData->bytesPerRow, 0);
-            image = CGImageCreate(sw, sh, 8, 32, pmData->bytesPerRow,
-                                  macGenericColorSpace(),
-                                  kCGImageAlphaPremultipliedFirst, provider, 0, 0,
-                                  kCGRenderingIntentDefault);
-        }
+        QCFType<CGImageRef> img = pm.toMacCGImageRef();
+        image = CGImageCreateWithImageInRect(img, CGRectMake(qRound(sr.x()), qRound(sr.y()), qRound(sr.width()), qRound(sr.height())));
     } else {
         image = (CGImageRef)pm.macCGHandle();
     }
@@ -1031,11 +1001,7 @@ CGImageRef qt_mac_createCGImageFromQImage(const QImage &img, const QImage **imag
     else
         image = new QImage(img);
 
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     uint cgflags = kCGImageAlphaNone;
-#else
-    CGImageAlphaInfo cgflags = kCGImageAlphaNone;
-#endif
     switch (image->format()) {
     case QImage::Format_ARGB32_Premultiplied:
         cgflags = kCGImageAlphaPremultipliedFirst;
@@ -1048,9 +1014,8 @@ CGImageRef qt_mac_createCGImageFromQImage(const QImage &img, const QImage **imag
     default:
         break;
     }
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4) && defined(kCGBitmapByteOrder32Host) //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
+#if defined(kCGBitmapByteOrder32Host) //only needed because CGImage.h added symbols in the minor version
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
     QCFType<CGDataProviderRef> dataProvider = CGDataProviderCreateWithData(image,
                                                           static_cast<const QImage *>(image)->bits(),
@@ -1078,27 +1043,9 @@ void QCoreGraphicsPaintEngine::drawImage(const QRectF &r, const QImage &img, con
     const QImage *image;
     QCFType<CGImageRef> cgimage = qt_mac_createCGImageFromQImage(img, &image);
     CGRect rect = CGRectMake(r.x(), r.y(), r.width(), r.height());
-    if (QRectF(0, 0, img.width(), img.height()) != sr) {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-            cgimage = CGImageCreateWithImageInRect(cgimage, CGRectMake(sr.x(), sr.y(),
-                        sr.width(), sr.height()));
-        } else
-#endif
-        {
-            int sx = qRound(sr.x());
-            int sy = qRound(sr.y());
-            int sw = qRound(sr.width());
-            int sh = qRound(sr.height());
-            // Make another CGImage based on the part that we need.
-            const uchar *pantherData = image->scanLine(sy) + sx * sizeof(uint);
-            QCFType<CGDataProviderRef> dataProvider = CGDataProviderCreateWithData(0, pantherData,
-                                                                                   sw * sh * image->bytesPerLine(), 0);
-            cgimage = CGImageCreate(sw, sh, 8, 32, image->bytesPerLine(),
-                                    macGenericColorSpace(),
-                    CGImageGetAlphaInfo(cgimage), dataProvider, 0, false, kCGRenderingIntentDefault);
-        }
-    }
+    if (QRectF(0, 0, img.width(), img.height()) != sr)
+        cgimage = CGImageCreateWithImageInRect(cgimage, CGRectMake(sr.x(), sr.y(),
+                                               sr.width(), sr.height()));
     qt_mac_drawCGImage(d->hd, &rect, cgimage);
 }
 
diff --git a/src/gui/painting/qprintengine_mac.mm b/src/gui/painting/qprintengine_mac.mm
index 255a0a1..1c4505f 100644
--- a/src/gui/painting/qprintengine_mac.mm
+++ b/src/gui/painting/qprintengine_mac.mm
@@ -92,16 +92,8 @@ bool QMacPrintEngine::begin(QPaintDevice *dev)
     }
     OSStatus status = noErr;
 #ifndef QT_MAC_USE_COCOA
-#  if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        status = d->shouldSuppressStatus() ? PMSessionBeginCGDocumentNoDialog(d->session, d->settings, d->format)
-                                           : PMSessionBeginCGDocument(d->session, d->settings, d->format);
-    } else
-#  endif
-    {
-        status = d->shouldSuppressStatus() ? PMSessionBeginDocumentNoDialog(d->session, d->settings, d->format)
-                                           : PMSessionBeginDocument(d->session, d->settings, d->format);
-    }
+    status = d->shouldSuppressStatus() ? PMSessionBeginCGDocumentNoDialog(d->session, d->settings, d->format)
+                                       : PMSessionBeginCGDocument(d->session, d->settings, d->format);
 #else
     status = PMSessionBeginCGDocumentNoDialog(d->session, d->settings, d->format);
 #endif
@@ -468,23 +460,6 @@ void QMacPrintEnginePrivate::initialize()
 #endif
 
 #ifndef QT_MAC_USE_COCOA
-# if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion < QSysInfo::MV_10_4)
-# endif
-    {
-        if(paintEngine->type() == QPaintEngine::CoreGraphics) {
-            CFStringRef strings[1] = { kPMGraphicsContextCoreGraphics };
-            QCFType<CFArrayRef> contextArray = CFArrayCreate(kCFAllocatorDefault,
-                    reinterpret_cast<const void **>(strings),
-                    1, &kCFTypeArrayCallBacks);
-            OSStatus err = PMSessionSetDocumentFormatGeneration(session, kPMDocumentFormatPDF,
-                    contextArray, 0);
-            if(err != noErr) {
-                qWarning("QMacPrintEngine::initialize: Cannot set format generation to PDF: %ld", err);
-                state = QPrinter::Error;
-            }
-        }
-    }
     if (!settingsOK || !formatOK) {
         qWarning("QMacPrintEngine::initialize: Unable to initialize QPainter");
         state = QPrinter::Error;
@@ -551,19 +526,7 @@ bool QMacPrintEnginePrivate::newPage_helper()
 
     CGContextRef cgContext;
     OSStatus err = noErr;
-#ifndef QT_MAC_USE_COCOA
-#  if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        err = PMSessionGetCGGraphicsContext(session, &cgContext);
-    } else
-#  endif
-    {
-        err = PMSessionGetGraphicsContext(session, kPMGraphicsContextCoreGraphics,
-                                          reinterpret_cast<void **>(&cgContext));
-    }
-#else
     err = PMSessionGetCGGraphicsContext(session, &cgContext);
-#endif
     if(err != noErr) {
         qWarning("QMacPrintEngine::newPage: Cannot retrieve CoreGraphics context: %ld", long(err));
         state = QPrinter::Error;
diff --git a/src/gui/painting/qprinterinfo_mac.cpp b/src/gui/painting/qprinterinfo_mac.cpp
index 9cf94b2..c84271c 100644
--- a/src/gui/painting/qprinterinfo_mac.cpp
+++ b/src/gui/painting/qprinterinfo_mac.cpp
@@ -172,16 +172,9 @@ bool QPrinterInfo::isDefault() const
 
 QList<QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
 {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4)
-		return QList<QPrinter::PaperSize>();
-#else
-	if (QSysInfo::MacintoshVersion <= QSysInfo::MV_10_4)
-		return QList<QPrinter::PaperSize>();
-
     const Q_D(QPrinterInfo);
 
-    PMPrinter cfPrn = PMPrinterCreateFromPrinterID(
-            QCFString::toCFStringRef(d->m_name));
+    PMPrinter cfPrn = PMPrinterCreateFromPrinterID(QCFString::toCFStringRef(d->m_name));
 
     if (!cfPrn) return QList<QPrinter::PaperSize>();
 
@@ -211,7 +204,6 @@ QList<QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
     PMRelease(cfPrn);
 
     return paperList;
-#endif // MAC_OS_X_VERSION_MAX_ALLOWED
 }
 
 /////////////////////////////////////////////////////////////////////////////
diff --git a/src/gui/styles/qmacstyle_mac.mm b/src/gui/styles/qmacstyle_mac.mm
index d50cd42..8812614 100644
--- a/src/gui/styles/qmacstyle_mac.mm
+++ b/src/gui/styles/qmacstyle_mac.mm
@@ -581,11 +581,7 @@ QPixmap *qt_mac_backgroundPattern = 0; // stores the standard widget background.
  *****************************************************************************/
 static inline int qt_mac_hitheme_tab_version()
 {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        return 1;
-#endif
-    return 0;
+    return 1;
 }
 
 static inline HIRect qt_hirectForQRect(const QRect &convertRect, const QRect &rect = QRect())
@@ -1471,8 +1467,7 @@ void QMacStylePrivate::getSliderInfo(QStyle::ComplexControl cc, const QStyleOpti
     }
 
     // Tiger broke reverse scroll bars so put them back and "fake it"
-    if (isScrollbar && (tdi->attributes & kThemeTrackRightToLeft)
-        && QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
+    if (isScrollbar && (tdi->attributes & kThemeTrackRightToLeft)) {
         tdi->attributes &= ~kThemeTrackRightToLeft;
         tdi->value = tdi->max - slider->sliderPosition;
     }
@@ -2027,22 +2022,10 @@ QMacStyle::~QMacStyle()
 QPixmap QMacStylePrivate::generateBackgroundPattern() const
 {
     QPixmap px(4, 4);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-        QMacCGContext cg(&px);
-        HIThemeSetFill(kThemeBrushDialogBackgroundActive, 0, cg, kHIThemeOrientationNormal);
-        const CGRect cgRect = CGRectMake(0, 0, px.width(), px.height());
-        CGContextFillRect(cg, cgRect);
-    } else
-#endif
-    {
-#ifndef QT_MAC_NO_QUICKDRAW
-        QMacSavedPortInfo port(&px);
-        SetThemeBackground(kThemeBrushDialogBackgroundActive, px.depth(), true);
-        const Rect qdRect = { 0, 0, px.width(), px.height() };
-        EraseRect(&qdRect);
-#endif
-    }
+    QMacCGContext cg(&px);
+    HIThemeSetFill(kThemeBrushDialogBackgroundActive, 0, cg, kHIThemeOrientationNormal);
+    const CGRect cgRect = CGRectMake(0, 0, px.width(), px.height());
+    CGContextFillRect(cg, cgRect);
     return px;
 }
 
@@ -2052,14 +2035,13 @@ QPixmap QMacStylePrivate::generateBackgroundPattern() const
 */
 void qt_mac_fill_background(QPainter *painter, const QRegion &rgn, const QPoint &offset, const QBrush &brush)
 {
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     QPoint dummy;
     const QPaintDevice *target = painter->device();
     const QPaintDevice *redirected = QPainter::redirected(target, &dummy);
     const bool usePainter = redirected && redirected != target;
     const QRegion translated = rgn.translated(offset);
 
-    if (!usePainter && QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4 && qt_mac_backgroundPattern
+    if (!usePainter && qt_mac_backgroundPattern
         && qt_mac_backgroundPattern->cacheKey() == brush.texture().cacheKey()) {
 
         painter->setClipRegion(translated);
@@ -2078,9 +2060,7 @@ void qt_mac_fill_background(QPainter *painter, const QRegion &rgn, const QPoint
         }
 
         CGContextRestoreGState(cg);
-    } else
-#endif
-    {
+    } else {
         const QRect rect(translated.boundingRect());
         painter->setClipRegion(translated);
         painter->drawTiledPixmap(rect, brush.texture(), rect.topLeft());
@@ -3318,27 +3298,14 @@ void QMacStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPai
         if (const QStyleOptionTabWidgetFrame *twf
                 = qstyleoption_cast<const QStyleOptionTabWidgetFrame *>(opt)) {
             HIRect hirect = qt_hirectForQRect(twf->rect);
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-            if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
-                HIThemeTabPaneDrawInfo tpdi;
-                tpdi.version = qt_mac_hitheme_tab_version();
-                tpdi.state = tds;
-                tpdi.direction = getTabDirection(twf->shape);
-                tpdi.size = kHIThemeTabSizeNormal;
-                if (tpdi.version == 1) {
-                    tpdi.kind = kHIThemeTabKindNormal;
-                    tpdi.adornment = kHIThemeTabPaneAdornmentNormal;
-                }
-                HIThemeDrawTabPane(&hirect, &tpdi, cg, kHIThemeOrientationNormal);
-            } else
-#endif
-            {
-                HIThemeGroupBoxDrawInfo gdi;
-                gdi.version = qt_mac_hitheme_version;
-                gdi.state = tds;
-                gdi.kind = kHIThemeGroupBoxKindSecondary;
-                HIThemeDrawGroupBox(&hirect, &gdi, cg, kHIThemeOrientationNormal);
-            }
+            HIThemeTabPaneDrawInfo tpdi;
+            tpdi.version = qt_mac_hitheme_tab_version();
+            tpdi.state = tds;
+            tpdi.direction = getTabDirection(twf->shape);
+            tpdi.size = kHIThemeTabSizeNormal;
+            tpdi.kind = kHIThemeTabKindNormal;
+            tpdi.adornment = kHIThemeTabPaneAdornmentNormal;
+            HIThemeDrawTabPane(&hirect, &tpdi, cg, kHIThemeOrientationNormal);
         }
         break;
     case PE_PanelScrollAreaCorner: {
@@ -3358,11 +3325,6 @@ void QMacStyle::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPai
         drawTabCloseButton(p, hover, active, selected);
         } break;
     case PE_PanelStatusBar: {
-        if (QSysInfo::MacintoshVersion <= QSysInfo::MV_10_4) {
-            QWindowsStyle::drawPrimitive(pe, opt, p, w);
-            break;
-        }
-
         // Use the Leopard style only if the status bar is the status bar for a
         // QMainWindow with a unifed toolbar.
         if (w == 0 || w->parent() == 0 || qobject_cast<QMainWindow *>(w->parent()) == 0 ||
@@ -4812,10 +4774,7 @@ void QMacStyle::drawComplexControl(ComplexControl cc, const QStyleOptionComplex
                         // similar when I have an upside down scroll bar
                         // because on Tiger I only "fake" the reverse stuff.
                         bool reverseHorizontal = (slider->direction == Qt::RightToLeft
-                                                  && slider->orientation == Qt::Horizontal
-                                                  && (!slider->upsideDown
-                                                      || (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4
-                                                          && slider->upsideDown)));
+                                                  && slider->orientation == Qt::Horizontal);
                         if ((reverseHorizontal
                              && slider->activeSubControls == SC_ScrollBarAddLine)
                             || (!reverseHorizontal
@@ -5450,11 +5409,7 @@ QRect QMacStyle::subControlRect(ComplexControl cc, const QStyleOptionComplex *op
                     cpc = sc == SC_ScrollBarSubLine ? kControlUpButtonPart
                                                             : kControlDownButtonPart;
                     if (slider->direction == Qt::RightToLeft
-                        && slider->orientation == Qt::Horizontal
-                        && (!slider->upsideDown
-                            || (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4
-                                && slider->upsideDown))
-                        ) {
+                        && slider->orientation == Qt::Horizontal) {
                         if (cpc == kControlDownButtonPart)
                             cpc = kControlUpButtonPart;
                         else if (cpc == kControlUpButtonPart)
@@ -5772,11 +5727,6 @@ QSize QMacStyle::sizeFromContents(ContentsType ct, const QStyleOption *opt,
         break;
     case QStyle::CT_TabBarTab:
         if (const QStyleOptionTabV3 *tab = qstyleoption_cast<const QStyleOptionTabV3 *>(opt)) {
-            bool newStyleTabs =
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
-                QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4 ? true :
-#endif
-                false;
             const QAquaWidgetSize AquaSize = d->aquaSizeConstrain(opt, widget);
             const bool differentFont = (widget && widget->testAttribute(Qt::WA_SetFont))
                                        || !QApplication::desktopSettingsAware();
@@ -5784,86 +5734,61 @@ QSize QMacStyle::sizeFromContents(ContentsType ct, const QStyleOption *opt,
             bool vertTabs = ttd == kThemeTabWest || ttd == kThemeTabEast;
             if (vertTabs)
                 sz.transpose();
-            if (newStyleTabs) {
-                int defaultTabHeight;
-                int defaultExtraSpace = proxy()->pixelMetric(PM_TabBarTabHSpace, tab, widget); // Remove spurious gcc warning (AFAIK)
-                QFontMetrics fm = opt->fontMetrics;
-                switch (AquaSize) {
-                case QAquaSizeUnknown:
-                case QAquaSizeLarge:
-                    if (tab->documentMode)
-                        defaultTabHeight = 23;
-                    else
-                        defaultTabHeight = 21;
-                    break;
-                case QAquaSizeSmall:
-                    defaultTabHeight = 18;
-                    break;
-                case QAquaSizeMini:
-                    defaultTabHeight = 16;
-                    break;
-                }
-
-                bool setWidth = false;
-                if (differentFont || !tab->icon.isNull()) {
-                    sz.rheight() = qMax(defaultTabHeight, sz.height());
-                } else {
-                    QSize textSize = fm.size(Qt::TextShowMnemonic, tab->text);
-                    sz.rheight() = qMax(defaultTabHeight, textSize.height());
-                    sz.rwidth() = textSize.width() + defaultExtraSpace;
-                    setWidth = true;
-                }
+            int defaultTabHeight;
+            int defaultExtraSpace = proxy()->pixelMetric(PM_TabBarTabHSpace, tab, widget); // Remove spurious gcc warning (AFAIK)
+            QFontMetrics fm = opt->fontMetrics;
+            switch (AquaSize) {
+            case QAquaSizeUnknown:
+            case QAquaSizeLarge:
+                if (tab->documentMode)
+                    defaultTabHeight = 23;
+                else
+                    defaultTabHeight = 21;
+                break;
+            case QAquaSizeSmall:
+                defaultTabHeight = 18;
+                break;
+            case QAquaSizeMini:
+                defaultTabHeight = 16;
+                break;
+            }
+            bool setWidth = false;
+            if (differentFont || !tab->icon.isNull()) {
+                sz.rheight() = qMax(defaultTabHeight, sz.height());
+            } else {
+                QSize textSize = fm.size(Qt::TextShowMnemonic, tab->text);
+                sz.rheight() = qMax(defaultTabHeight, textSize.height());
+                sz.rwidth() = textSize.width() + defaultExtraSpace;
+                setWidth = true;
+            }
 
-                if (vertTabs)
-                    sz.transpose();
+            if (vertTabs)
+                sz.transpose();
 
-                int maxWidgetHeight = qMax(tab->leftButtonSize.height(), tab->rightButtonSize.height());
-                int maxWidgetWidth = qMax(tab->leftButtonSize.width(), tab->rightButtonSize.width());
+            int maxWidgetHeight = qMax(tab->leftButtonSize.height(), tab->rightButtonSize.height());
+            int maxWidgetWidth = qMax(tab->leftButtonSize.width(), tab->rightButtonSize.width());
 
-                int widgetWidth = 0;
-                int widgetHeight = 0;
-                int padding = 0;
-                if (tab->leftButtonSize.isValid()) {
-                    padding += 8;
-                    widgetWidth += tab->leftButtonSize.width();
-                    widgetHeight += tab->leftButtonSize.height();
-                }
-                if (tab->rightButtonSize.isValid()) {
-                    padding += 8;
-                    widgetWidth += tab->rightButtonSize.width();
-                    widgetHeight += tab->rightButtonSize.height();
-                }
+            int widgetWidth = 0;
+            int widgetHeight = 0;
+            int padding = 0;
+            if (tab->leftButtonSize.isValid()) {
+                padding += 8;
+                widgetWidth += tab->leftButtonSize.width();
+                widgetHeight += tab->leftButtonSize.height();
+            }
+            if (tab->rightButtonSize.isValid()) {
+                padding += 8;
+                widgetWidth += tab->rightButtonSize.width();
+                widgetHeight += tab->rightButtonSize.height();
+            }
 
-                if (vertTabs) {
-                    sz.setHeight(sz.height() + widgetHeight + padding);
-                    sz.setWidth(qMax(sz.width(), maxWidgetWidth));
-                } else {
-                    if (setWidth)
-                        sz.setWidth(sz.width() + widgetWidth + padding);
-                    sz.setHeight(qMax(sz.height(), maxWidgetHeight));
-                }
+            if (vertTabs) {
+                sz.setHeight(sz.height() + widgetHeight + padding);
+                sz.setWidth(qMax(sz.width(), maxWidgetWidth));
             } else {
-                SInt32 tabh = sz.height();
-                SInt32 overlap = 0;
-                switch (AquaSize) {
-                default:
-                case QAquaSizeUnknown:
-                case QAquaSizeLarge:
-                    GetThemeMetric(kThemeLargeTabHeight, &tabh);
-                    GetThemeMetric(kThemeMetricTabFrameOverlap, &overlap);
-                    break;
-                case QAquaSizeMini:
-                    GetThemeMetric(kThemeMetricMiniTabHeight, &tabh);
-                    GetThemeMetric(kThemeMetricMiniTabFrameOverlap, &overlap);
-                    break;
-                case QAquaSizeSmall:
-                    GetThemeMetric(kThemeSmallTabHeight, &tabh);
-                    GetThemeMetric(kThemeMetricSmallTabFrameOverlap, &overlap);
-                    break;
-                }
-                tabh += overlap;
-                if (sz.height() < tabh)
-                    sz.rheight() = tabh;
+                if (setWidth)
+                    sz.setWidth(sz.width() + widgetWidth + padding);
+                sz.setHeight(qMax(sz.height(), maxWidgetHeight));
             }
         }
         break;
@@ -6152,11 +6077,9 @@ QIcon QMacStyle::standardIconImplementation(StandardPixmap standardIcon, const Q
     case SP_TrashIcon:
         iconType = kTrashIcon;
         break;
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     case SP_ComputerIcon:
         iconType = kComputerIcon;
         break;
-#endif
     case SP_DriveFDIcon:
         iconType = kGenericFloppyIcon;
         break;
diff --git a/src/gui/text/qfontengine_mac.mm b/src/gui/text/qfontengine_mac.mm
index a545148..76132df 100644
--- a/src/gui/text/qfontengine_mac.mm
+++ b/src/gui/text/qfontengine_mac.mm
@@ -540,14 +540,9 @@ QImage QCoreTextFontEngine::alphaMapForGlyph(glyph_t glyph)
     im.fill(0);
 
     CGColorSpaceRef colorspace = QCoreGraphicsPaintEngine::macGenericColorSpace();
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     uint cgflags = kCGImageAlphaNoneSkipFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-    CGImageAlphaInfo cgflags = kCGImageAlphaNoneSkipFirst;
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
     CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
                                              8, im.bytesPerLine(), colorspace,
@@ -1431,14 +1426,9 @@ QImage QFontEngineMac::imageForGlyph(glyph_t glyph, int margin, bool colorful)
     im.fill(0xff000000);
 
     CGColorSpaceRef colorspace = QCoreGraphicsPaintEngine::macGenericColorSpace();
-#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
     uint cgflags = kCGImageAlphaNoneSkipFirst;
 #ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
-    if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
-        cgflags |= kCGBitmapByteOrder32Host;
-#endif
-#else
-    CGImageAlphaInfo cgflags = kCGImageAlphaNoneSkipFirst;
+    cgflags |= kCGBitmapByteOrder32Host;
 #endif
     CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
                                              8, im.bytesPerLine(), colorspace,
diff --git a/src/gui/widgets/qmainwindowlayout_mac.mm b/src/gui/widgets/qmainwindowlayout_mac.mm
index 03bae2f..6632be7 100644
--- a/src/gui/widgets/qmainwindowlayout_mac.mm
+++ b/src/gui/widgets/qmainwindowlayout_mac.mm
@@ -329,18 +329,16 @@ OSStatus QMainWindowLayout::qtmacToolbarDelegate(EventHandlerCallRef, EventRef e
 void QMainWindowLayout::updateHIToolBarStatus()
 {
     bool useMacToolbar = layoutState.mainWindow->unifiedTitleAndToolBarOnMac();
-    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
 #ifndef QT_MAC_USE_COCOA
-        if (useMacToolbar) {
-            ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
-                                   kWindowUnifiedTitleAndToolbarAttribute, 0);
-        } else {
-            ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
-                                   0, kWindowUnifiedTitleAndToolbarAttribute);
-        }
-#endif
-        macWindowToolbarShow(layoutState.mainWindow, useMacToolbar);
+    if (useMacToolbar) {
+        ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
+                               kWindowUnifiedTitleAndToolbarAttribute, 0);
+    } else {
+        ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
+                               0, kWindowUnifiedTitleAndToolbarAttribute);
     }
+#endif
+    macWindowToolbarShow(layoutState.mainWindow, useMacToolbar);
 
     layoutState.mainWindow->setUpdatesEnabled(false);  // reduces a little bit of flicker, not all though
     if (!useMacToolbar) {
diff --git a/src/gui/widgets/qstatusbar.cpp b/src/gui/widgets/qstatusbar.cpp
index da70aac..8a174f9 100644
--- a/src/gui/widgets/qstatusbar.cpp
+++ b/src/gui/widgets/qstatusbar.cpp
@@ -804,9 +804,6 @@ bool QStatusBar::event(QEvent *e)
 #ifndef Q_WS_MAC
     return QWidget::event(e);
 #else
-    if (QSysInfo::MacintoshVersion <= QSysInfo::MV_10_4)
-        return QWidget::event(e);
-
     // Enable drag-click only if the status bar is the status bar for a
     // QMainWindow with a unifed toolbar.
     if (parent() == 0 || qobject_cast<QMainWindow *>(parent()) == 0 ||