Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.6

19 files changed, 563 insertions, 179 deletions

diff --git a/src/gui/dialogs/dialogs.pri b/src/gui/dialogs/dialogs.pri
index b9fad41..63f64a2 100644
--- a/src/gui/dialogs/dialogs.pri
+++ b/src/gui/dialogs/dialogs.pri
@@ -28,13 +28,27 @@ HEADERS += \
         dialogs/qprintpreviewdialog.h
 
 !embedded:mac {
-    OBJECTIVE_SOURCES += dialogs/qcolordialog_mac.mm \
-                         dialogs/qfiledialog_mac.mm \
+    OBJECTIVE_SOURCES += dialogs/qfiledialog_mac.mm \
                          dialogs/qfontdialog_mac.mm \
                          dialogs/qnspanelproxy_mac.mm \
                          dialogs/qpagesetupdialog_mac.mm \
                          dialogs/qprintdialog_mac.mm
+
+# Compile qcolordialog_mac.mm with exception support, disregarding the -no-exceptions 
+# configure option. (qcolordialog_mac needs to catch exceptions thrown by cocoa)
+    EXCEPTION_SOURCES = dialogs/qcolordialog_mac.mm
+    exceptions_compiler.commands = $$QMAKE_CXX -c
+    exceptions_compiler.commands += $(CXXFLAGS) $(INCPATH) ${QMAKE_FILE_IN} -o ${QMAKE_FILE_OUT}
+    exceptions_compiler.commands += -fexceptions
+    exceptions_compiler.dependency_type = TYPE_C
+    exceptions_compiler.output = ${QMAKE_VAR_OBJECTS_DIR}${QMAKE_FILE_BASE}$${first(QMAKE_EXT_OBJ)}
+    exceptions_compiler.input = EXCEPTION_SOURCES
+    exceptions_compiler.variable_out = OBJECTS
+    exceptions_compiler.name = compiling[exceptopns] ${QMAKE_FILE_IN}
+    silent:exceptions_compiler.commands = @echo compiling[exceptopns] ${QMAKE_FILE_IN} && $$exceptions_compiler.commands
+    QMAKE_EXTRA_COMPILERS += exceptions_compiler
 }
+
 win32 {
     HEADERS += dialogs/qwizard_win_p.h
     SOURCES += dialogs/qdialogsbinarycompat_win.cpp \
diff --git a/src/gui/effects/qgraphicseffect.cpp b/src/gui/effects/qgraphicseffect.cpp
index d6cabaa..a523bab 100644
--- a/src/gui/effects/qgraphicseffect.cpp
+++ b/src/gui/effects/qgraphicseffect.cpp
@@ -313,7 +313,10 @@ QPixmap QGraphicsEffectSource::pixmap(Qt::CoordinateSystem system, QPoint *offse
     // Shortcut, no cache for childless pixmap items...
     const QGraphicsItem *item = graphicsItem();
     if (system == Qt::LogicalCoordinates && mode == QGraphicsEffect::NoPad && item && isPixmap()) {
-        return ((QGraphicsPixmapItem *) item)->pixmap();
+        const QGraphicsPixmapItem *pixmapItem = static_cast<const QGraphicsPixmapItem *>(item);
+        if (offset)
+            *offset = pixmapItem->offset().toPoint();
+        return pixmapItem->pixmap();
     }
 
     if (system == Qt::DeviceCoordinates && item
@@ -371,10 +374,14 @@ QGraphicsEffectSourcePrivate::~QGraphicsEffectSourcePrivate()
     invalidateCache();
 }
 
-void QGraphicsEffectSourcePrivate::invalidateCache(bool effectRectChanged) const
+void QGraphicsEffectSourcePrivate::invalidateCache(InvalidateReason reason) const
 {
-    if (effectRectChanged && m_cachedMode != QGraphicsEffect::PadToEffectiveBoundingRect)
+    if (m_cachedMode != QGraphicsEffect::PadToEffectiveBoundingRect
+        && (reason == EffectRectChanged
+            || reason == TransformChanged
+               && m_cachedSystem == Qt::LogicalCoordinates))
         return;
+
     QPixmapCache::remove(m_cacheKey);
 }
 
@@ -520,7 +527,7 @@ void QGraphicsEffect::updateBoundingRect()
     Q_D(QGraphicsEffect);
     if (d->source) {
         d->source->d_func()->effectBoundingRectChanged();
-        d->source->d_func()->invalidateCache(true);
+        d->source->d_func()->invalidateCache(QGraphicsEffectSourcePrivate::EffectRectChanged);
     }
 }
 
@@ -837,22 +844,19 @@ QRectF QGraphicsBlurEffect::boundingRectFor(const QRectF &rect) const
 void QGraphicsBlurEffect::draw(QPainter *painter)
 {
     Q_D(QGraphicsBlurEffect);
-    if (d->filter->radius() <= 0) {
+    if (d->filter->radius() < 1) {
         drawSource(painter);
         return;
     }
 
     PixmapPadMode mode = PadToEffectiveBoundingRect;
     if (painter->paintEngine()->type() == QPaintEngine::OpenGL2)
-        mode = PadToTransparentBorder;
+        mode = NoPad;
 
     // Draw pixmap in device coordinates to avoid pixmap scaling.
     QPoint offset;
-    const QPixmap pixmap = sourcePixmap(Qt::DeviceCoordinates, &offset, mode);
-    QTransform restoreTransform = painter->worldTransform();
-    painter->setWorldTransform(QTransform());
+    QPixmap pixmap = sourcePixmap(Qt::LogicalCoordinates, &offset, mode);
     d->filter->draw(painter, offset, pixmap);
-    painter->setWorldTransform(restoreTransform);
 }
 
 /*!
@@ -1033,7 +1037,7 @@ void QGraphicsDropShadowEffect::draw(QPainter *painter)
 
     PixmapPadMode mode = PadToEffectiveBoundingRect;
     if (painter->paintEngine()->type() == QPaintEngine::OpenGL2)
-        mode = PadToTransparentBorder;
+        mode = NoPad;
 
     // Draw pixmap in device coordinates to avoid pixmap scaling.
     QPoint offset;
diff --git a/src/gui/effects/qgraphicseffect_p.h b/src/gui/effects/qgraphicseffect_p.h
index 0011eef..cab7a48 100644
--- a/src/gui/effects/qgraphicseffect_p.h
+++ b/src/gui/effects/qgraphicseffect_p.h
@@ -108,6 +108,13 @@ public:
         , m_cachedMode(QGraphicsEffect::PadToTransparentBorder)
     {}
 
+    enum InvalidateReason
+    {
+        TransformChanged,
+        EffectRectChanged,
+        SourceChanged
+    };
+
     virtual ~QGraphicsEffectSourcePrivate();
     virtual void detach() = 0;
     virtual QRectF boundingRect(Qt::CoordinateSystem system) const = 0;
@@ -121,7 +128,9 @@ public:
     virtual QPixmap pixmap(Qt::CoordinateSystem system, QPoint *offset = 0,
                            QGraphicsEffect::PixmapPadMode mode = QGraphicsEffect::PadToTransparentBorder) const = 0;
     virtual void effectBoundingRectChanged() = 0;
-    void invalidateCache(bool effectRectChanged = false) const;
+
+    void invalidateCache(InvalidateReason reason = SourceChanged) const;
+    Qt::CoordinateSystem currentCachedSystem() const { return m_cachedSystem; }
 
     friend class QGraphicsScenePrivate;
     friend class QGraphicsItem;
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp
index d955f16..fbfd8e6 100644
--- a/src/gui/graphicsview/qgraphicsitem.cpp
+++ b/src/gui/graphicsview/qgraphicsitem.cpp
@@ -7177,9 +7177,16 @@ void QGraphicsItem::prepareGeometryChange()
 
     QGraphicsItem *parent = this;
     while ((parent = parent->d_ptr->parent)) {
-        parent->d_ptr->dirtyChildrenBoundingRect = 1;
+        QGraphicsItemPrivate *parentp = parent->d_ptr.data();
+        parentp->dirtyChildrenBoundingRect = 1;
         // ### Only do this if the parent's effect applies to the entire subtree.
-        parent->d_ptr->notifyBoundingRectChanged = 1;
+        parentp->notifyBoundingRectChanged = 1;
+#ifndef QT_NO_GRAPHICSEFFECT
+        if (parentp->scene && parentp->graphicsEffect) {
+            parentp->notifyInvalidated = 1;
+            static_cast<QGraphicsItemEffectSourcePrivate *>(parentp->graphicsEffect->d_func()->source->d_func())->invalidateCache();
+        }
+#endif
     }
 }
 
@@ -10717,7 +10724,6 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
         qWarning("QGraphicsEffectSource::pixmap: Not yet implemented, lacking device context");
         return QPixmap();
     }
-
     if (!item->d_ptr->scene)
         return QPixmap();
     QGraphicsScenePrivate *scened = item->d_ptr->scene->d_func();
@@ -10725,9 +10731,11 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
     const QRectF sourceRect = boundingRect(system);
     QRectF effectRectF;
 
+    bool unpadded = false;
     if (mode == QGraphicsEffect::PadToEffectiveBoundingRect) {
         if (info) {
             effectRectF = item->graphicsEffect()->boundingRectFor(boundingRect(Qt::DeviceCoordinates));
+            unpadded = (effectRectF.size() == sourceRect.size());
             if (info && system == Qt::LogicalCoordinates)
                 effectRectF = info->painter->worldTransform().inverted().mapRect(effectRectF);
         } else {
@@ -10739,6 +10747,7 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
         effectRectF = sourceRect.adjusted(-1.5, -1.5, 1.5, 1.5);
     } else {
         effectRectF = sourceRect;
+        unpadded = true;
     }
 
     QRect effectRect = effectRectF.toAlignedRect();
@@ -10746,6 +10755,14 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
     if (offset)
         *offset = effectRect.topLeft();
 
+    bool untransformed = !deviceCoordinates
+            || info->painter->worldTransform().type() <= QTransform::TxTranslate;
+    if (untransformed && unpadded && isPixmap()) {
+        if (offset)
+            *offset = boundingRect(system).topLeft().toPoint();
+        return static_cast<QGraphicsPixmapItem *>(item)->pixmap();
+    }
+
     if (deviceCoordinates) {
         // Clip to viewport rect.
         int left, top, right, bottom;
@@ -10773,12 +10790,6 @@ QPixmap QGraphicsItemEffectSourcePrivate::pixmap(Qt::CoordinateSystem system, QP
     if (effectRect.isEmpty())
         return QPixmap();
 
-    if (system == Qt::LogicalCoordinates
-        && effectRect.size() == sourceRect.size()
-        && isPixmap()) {
-        return static_cast<QGraphicsPixmapItem *>(item)->pixmap();
-    }
-
     QPixmap pixmap(effectRect.size());
     pixmap.fill(Qt::transparent);
     QPainter pixmapPainter(&pixmap);
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index 2af90b8..182a3f5 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -614,6 +614,19 @@ void QGraphicsScenePrivate::removeItemHelper(QGraphicsItem *item)
     if (item == lastActivePanel)
         lastActivePanel = 0;
 
+    // Cancel active touches
+    {
+        QMap<int, QGraphicsItem *>::iterator it = itemForTouchPointId.begin();
+        while (it != itemForTouchPointId.end()) {
+            if (it.value() == item) {
+                sceneCurrentTouchPoints.remove(it.key());
+                it = itemForTouchPointId.erase(it);
+            } else {
+                ++it;
+            }
+        }
+    }
+
     // Disable selectionChanged() for individual items
     ++selectionChanging;
     int oldSelectedItemsSize = selectedItems.size();
@@ -4658,10 +4671,13 @@ void QGraphicsScenePrivate::drawSubtreeRecursive(QGraphicsItem *item, QPainter *
             painter->setWorldTransform(*transformPtr);
         painter->setOpacity(opacity);
 
-        if (sourced->lastEffectTransform != painter->worldTransform()) {
+        if (sourced->currentCachedSystem() != Qt::LogicalCoordinates
+            && sourced->lastEffectTransform != painter->worldTransform())
+        {
             sourced->lastEffectTransform = painter->worldTransform();
-            sourced->invalidateCache();
+            sourced->invalidateCache(QGraphicsEffectSourcePrivate::TransformChanged);
         }
+
         item->d_ptr->graphicsEffect->draw(painter);
         painter->setWorldTransform(restoreTransform);
         sourced->info = 0;
@@ -5680,17 +5696,22 @@ bool QGraphicsScenePrivate::sendTouchBeginEvent(QGraphicsItem *origin, QTouchEve
         touchEvent->setAccepted(acceptTouchEvents);
         res = acceptTouchEvents && sendEvent(item, touchEvent);
         eventAccepted = touchEvent->isAccepted();
-        item->d_ptr->acceptedTouchBeginEvent = (res && eventAccepted);
+        if (itemForTouchPointId.value(touchEvent->touchPoints().first().id()) == 0) {
+            // item was deleted
+            item = 0;
+        } else {
+            item->d_ptr->acceptedTouchBeginEvent = (res && eventAccepted);
+        }
         touchEvent->spont = false;
         if (res && eventAccepted) {
             // the first item to accept the TouchBegin gets an implicit grab.
             for (int i = 0; i < touchEvent->touchPoints().count(); ++i) {
                 const QTouchEvent::TouchPoint &touchPoint = touchEvent->touchPoints().at(i);
-                itemForTouchPointId[touchPoint.id()] = item;
+                itemForTouchPointId[touchPoint.id()] = item; // can be zero
             }
             break;
         }
-        if (item->isPanel())
+        if (item && item->isPanel())
             break;
     }
 
diff --git a/src/gui/image/qpixmapfilter.cpp b/src/gui/image/qpixmapfilter.cpp
index 3723500..9c7c28e 100644
--- a/src/gui/image/qpixmapfilter.cpp
+++ b/src/gui/image/qpixmapfilter.cpp
@@ -52,6 +52,10 @@
 #include "private/qgraphicssystem_p.h"
 #include "private/qpaintengineex_p.h"
 #include "private/qpaintengine_raster_p.h"
+#include "qmath.h"
+#include "private/qmath_p.h"
+#include "private/qmemrotate_p.h"
+#include "private/qdrawhelper_p.h"
 
 #ifndef QT_NO_GRAPHICSEFFECT
 QT_BEGIN_NAMESPACE
@@ -585,106 +589,343 @@ QGraphicsBlurEffect::BlurHints QPixmapBlurFilter::blurHints() const
     return d->hints;
 }
 
+const qreal radiusScale = qreal(2.5);
+
 /*!
     \internal
 */
 QRectF QPixmapBlurFilter::boundingRectFor(const QRectF &rect) const
 {
     Q_D(const QPixmapBlurFilter);
-    const qreal delta = d->radius + 1;
+    const qreal delta = radiusScale * d->radius + 1;
     return rect.adjusted(-delta, -delta, delta, delta);
 }
 
 // Blur the image according to the blur radius
 // Based on exponential blur algorithm by Jani Huhtanen
-// (maximum radius is set to 16)
-static QImage blurred(const QImage& image, const QRect& rect, int radius, bool alphaOnly = false)
+
+template <int aprec, int zprec, bool alphaOnly>
+static inline void blurrow( QImage & im, int line, int alpha);
+
+/*
+*  expblur(QImage &img, int radius)
+*
+*  In-place blur of image 'img' with kernel
+*  of approximate radius 'radius'.
+*
+*  Blurs with two sided exponential impulse
+*  response.
+*
+*  aprec = precision of alpha parameter
+*  in fixed-point format 0.aprec
+*
+*  zprec = precision of state parameters
+*  zR,zG,zB and zA in fp format 8.zprec
+*/
+template <int aprec, int zprec, bool alphaOnly>
+void expblur(QImage &img, qreal radius, bool improvedQuality = false, int transposed = 0)
+{
+    // halve the radius if we're using two passes
+    if (improvedQuality)
+        radius *= qreal(0.5);
+
+    Q_ASSERT(img.format() == QImage::Format_ARGB32_Premultiplied
+             || img.format() == QImage::Format_RGB32);
+
+    // choose the alpha such that pixels at radius distance from a fully
+    // saturated pixel will have an alpha component of no greater than
+    // the cutOffIntensity
+    const qreal cutOffIntensity = 2;
+    int alpha = radius <= qreal(1e-5)
+        ? ((1 << aprec)-1)
+        : qRound((1<<aprec)*(1 - qPow(cutOffIntensity * (1 / qreal(255)), 1 / radius)));
+
+    int img_height = img.height();
+    for (int row = 0; row < img_height; ++row) {
+        for (int i = 0; i <= improvedQuality; ++i)
+            blurrow<aprec, zprec, alphaOnly>(img, row, alpha);
+    }
+
+    QImage temp(img.height(), img.width(), img.format());
+    if (transposed >= 0) {
+        if (img.depth() == 8) {
+            qt_memrotate270(reinterpret_cast<const quint8*>(img.bits()),
+                            img.width(), img.height(), img.bytesPerLine(),
+                            reinterpret_cast<quint8*>(temp.bits()),
+                            temp.bytesPerLine());
+        } else {
+            qt_memrotate270(reinterpret_cast<const quint32*>(img.bits()),
+                            img.width(), img.height(), img.bytesPerLine(),
+                            reinterpret_cast<quint32*>(temp.bits()),
+                            temp.bytesPerLine());
+        }
+    } else {
+        if (img.depth() == 8) {
+            qt_memrotate90(reinterpret_cast<const quint8*>(img.bits()),
+                           img.width(), img.height(), img.bytesPerLine(),
+                           reinterpret_cast<quint8*>(temp.bits()),
+                           temp.bytesPerLine());
+        } else {
+            qt_memrotate90(reinterpret_cast<const quint32*>(img.bits()),
+                           img.width(), img.height(), img.bytesPerLine(),
+                           reinterpret_cast<quint32*>(temp.bits()),
+                           temp.bytesPerLine());
+        }
+    }
+
+    img_height = temp.height();
+    for (int row = 0; row < img_height; ++row) {
+        for (int i = 0; i <= improvedQuality; ++i)
+            blurrow<aprec, zprec, alphaOnly>(temp, row, alpha);
+    }
+
+    if (transposed == 0) {
+        qt_memrotate90(reinterpret_cast<const quint32*>(temp.bits()),
+                       temp.width(), temp.height(), temp.bytesPerLine(),
+                       reinterpret_cast<quint32*>(img.bits()),
+                       img.bytesPerLine());
+    } else {
+        img = temp;
+    }
+}
+
+template <int shift>
+static inline int static_shift(int value)
+{
+    if (shift == 0)
+        return value;
+    else if (shift > 0)
+        return value << (uint(shift) & 0x1f);
+    else
+        return value >> (uint(-shift) & 0x1f);
+}
+
+template<int aprec, int zprec>
+static inline void blurinner(uchar *bptr, int &zR, int &zG, int &zB, int &zA, int alpha)
 {
-    int tab[] = { 14, 10, 8, 6, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2 };
-    int alpha = (radius < 1)  ? 16 : (radius > 17) ? 1 : tab[radius-1];
+    QRgb *pixel = (QRgb *)bptr;
+
+#define Z_MASK (0xff << zprec)
+    const int A_zprec = static_shift<zprec - 24>(*pixel) & Z_MASK;
+    const int R_zprec = static_shift<zprec - 16>(*pixel) & Z_MASK;
+    const int G_zprec = static_shift<zprec - 8>(*pixel)  & Z_MASK;
+    const int B_zprec = static_shift<zprec>(*pixel)      & Z_MASK;
+#undef Z_MASK
+
+    const int zR_zprec = zR >> aprec;
+    const int zG_zprec = zG >> aprec;
+    const int zB_zprec = zB >> aprec;
+    const int zA_zprec = zA >> aprec;
+
+    zR += alpha * (R_zprec - zR_zprec);
+    zG += alpha * (G_zprec - zG_zprec);
+    zB += alpha * (B_zprec - zB_zprec);
+    zA += alpha * (A_zprec - zA_zprec);
+
+#define ZA_MASK (0xff << (zprec + aprec))
+    *pixel =
+        static_shift<24 - zprec - aprec>(zA & ZA_MASK)
+        | static_shift<16 - zprec - aprec>(zR & ZA_MASK)
+        | static_shift<8 - zprec - aprec>(zG & ZA_MASK)
+        | static_shift<-zprec - aprec>(zB & ZA_MASK);
+#undef ZA_MASK
+}
 
-    QImage result = image.convertToFormat(QImage::Format_ARGB32_Premultiplied);
-    int r1 = rect.top();
-    int r2 = rect.bottom();
-    int c1 = rect.left();
-    int c2 = rect.right();
+const int alphaIndex = (QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 3);
 
-    int bpl = result.bytesPerLine();
-    int rgba[4];
-    unsigned char* p;
+template<int aprec, int zprec>
+static inline void blurinner_alphaOnly(uchar *bptr, int &z, int alpha)
+{
+    const int A_zprec = int(*(bptr)) << zprec;
+    const int z_zprec = z >> aprec;
+    z += alpha * (A_zprec - z_zprec);
+    *(bptr) = z >> (zprec + aprec);
+}
 
-    int i1 = 0;
-    int i2 = 3;
+template<int aprec, int zprec, bool alphaOnly>
+static inline void blurrow(QImage & im, int line, int alpha)
+{
+    uchar *bptr = im.scanLine(line);
 
-    if (alphaOnly)
-        i1 = i2 = (QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 3);
+    int zR = 0, zG = 0, zB = 0, zA = 0;
+
+    if (alphaOnly && im.format() != QImage::Format_Indexed8)
+        bptr += alphaIndex;
 
-    for (int col = c1; col <= c2; col++) {
-        p = result.scanLine(r1) + col * 4;
-        for (int i = i1; i <= i2; i++)
-            rgba[i] = p[i] << 4;
+    const int stride = im.depth() >> 3;
+    const int im_width = im.width();
+    for (int index = 0; index < im_width; ++index) {
+        if (alphaOnly)
+            blurinner_alphaOnly<aprec, zprec>(bptr, zA, alpha);
+        else
+            blurinner<aprec, zprec>(bptr, zR, zG, zB, zA, alpha);
+        bptr += stride;
+    }
+
+    bptr -= stride;
+
+    for (int index = im_width - 2; index >= 0; --index) {
+        bptr -= stride;
+        if (alphaOnly)
+            blurinner_alphaOnly<aprec, zprec>(bptr, zA, alpha);
+        else
+            blurinner<aprec, zprec>(bptr, zR, zG, zB, zA, alpha);
+    }
+}
+
+#define AVG(a,b)  ( ((((a)^(b)) & 0xfefefefeUL) >> 1) + ((a)&(b)) )
+#define AVG16(a,b)  ( ((((a)^(b)) & 0xf7deUL) >> 1) + ((a)&(b)) )
+
+Q_GUI_EXPORT QImage qt_halfScaled(const QImage &source)
+{
+    QImage srcImage = source;
+
+    if (source.format() == QImage::Format_Indexed8) {
+        // assumes grayscale
+        QImage dest(source.width() / 2, source.height() / 2, srcImage.format());
+
+        const uchar *src = reinterpret_cast<const uchar*>(const_cast<const QImage &>(srcImage).bits());
+        int sx = srcImage.bytesPerLine();
+        int sx2 = sx << 1;
+
+        uchar *dst = reinterpret_cast<uchar*>(dest.bits());
+        int dx = dest.bytesPerLine();
+        int ww = dest.width();
+        int hh = dest.height();
+
+        for (int y = hh; y; --y, dst += dx, src += sx2) {
+            const uchar *p1 = src;
+            const uchar *p2 = src + sx;
+            uchar *q = dst;
+            for (int x = ww; x; --x, ++q, p1 += 2, p2 += 2)
+                *q = ((int(p1[0]) + int(p1[1]) + int(p2[0]) + int(p2[1])) + 2) >> 2;
+        }
 
-        p += bpl;
-        for (int j = r1; j < r2; j++, p += bpl)
-            for (int i = i1; i <= i2; i++)
-                p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
+        return dest;
+    } else if (source.format() == QImage::Format_ARGB8565_Premultiplied) {
+        QImage dest(source.width() / 2, source.height() / 2, srcImage.format());
+
+        const uchar *src = reinterpret_cast<const uchar*>(const_cast<const QImage &>(srcImage).bits());
+        int sx = srcImage.bytesPerLine();
+        int sx2 = sx << 1;
+
+        uchar *dst = reinterpret_cast<uchar*>(dest.bits());
+        int dx = dest.bytesPerLine();
+        int ww = dest.width();
+        int hh = dest.height();
+
+        for (int y = hh; y; --y, dst += dx, src += sx2) {
+            const uchar *p1 = src;
+            const uchar *p2 = src + sx;
+            uchar *q = dst;
+            for (int x = ww; x; --x, q += 3, p1 += 6, p2 += 6) {
+                // alpha
+                q[0] = AVG(AVG(p1[0], p1[3]), AVG(p2[0], p2[3]));
+                // rgb
+                const quint16 p16_1 = (p1[2] << 8) | p1[1];
+                const quint16 p16_2 = (p1[5] << 8) | p1[4];
+                const quint16 p16_3 = (p2[2] << 8) | p2[1];
+                const quint16 p16_4 = (p2[5] << 8) | p2[4];
+                const quint16 result = AVG16(AVG16(p16_1, p16_2), AVG16(p16_3, p16_4));
+                q[1] = result & 0xff;
+                q[2] = result >> 8;
+            }
+        }
+
+        return dest;
+    } else if (source.format() != QImage::Format_ARGB32_Premultiplied
+               && source.format() != QImage::Format_RGB32)
+    {
+        srcImage = source.convertToFormat(QImage::Format_ARGB32_Premultiplied);
     }
 
-    for (int row = r1; row <= r2; row++) {
-        p = result.scanLine(row) + c1 * 4;
-        for (int i = i1; i <= i2; i++)
-            rgba[i] = p[i] << 4;
+    QImage dest(source.width() / 2, source.height() / 2, srcImage.format());
+
+    const quint32 *src = reinterpret_cast<const quint32*>(const_cast<const QImage &>(srcImage).bits());
+    int sx = srcImage.bytesPerLine() >> 2;
+    int sx2 = sx << 1;
 
-        p += 4;
-        for (int j = c1; j < c2; j++, p += 4)
-            for (int i = i1; i <= i2; i++)
-                p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
+    quint32 *dst = reinterpret_cast<quint32*>(dest.bits());
+    int dx = dest.bytesPerLine() >> 2;
+    int ww = dest.width();
+    int hh = dest.height();
+
+    for (int y = hh; y; --y, dst += dx, src += sx2) {
+        const quint32 *p1 = src;
+        const quint32 *p2 = src + sx;
+        quint32 *q = dst;
+        for (int x = ww; x; --x, q++, p1 += 2, p2 += 2)
+            *q = AVG(AVG(p1[0], p1[1]), AVG(p2[0], p2[1]));
     }
 
-    for (int col = c1; col <= c2; col++) {
-        p = result.scanLine(r2) + col * 4;
-        for (int i = i1; i <= i2; i++)
-            rgba[i] = p[i] << 4;
+    return dest;
+}
 
-        p -= bpl;
-        for (int j = r1; j < r2; j++, p -= bpl)
-            for (int i = i1; i <= i2; i++)
-                p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
+Q_GUI_EXPORT void qt_blurImage(QPainter *p, QImage &blurImage, qreal radius, bool quality, bool alphaOnly, int transposed = 0)
+{
+    if (blurImage.format() != QImage::Format_ARGB32_Premultiplied
+        && blurImage.format() != QImage::Format_RGB32)
+    {
+        blurImage = blurImage.convertToFormat(QImage::Format_ARGB32_Premultiplied);
     }
 
-    for (int row = r1; row <= r2; row++) {
-        p = result.scanLine(row) + c2 * 4;
-        for (int i = i1; i <= i2; i++)
-            rgba[i] = p[i] << 4;
+    qreal scale = 1;
+    if (radius >= 4) {
+        blurImage = qt_halfScaled(blurImage);
+        scale = 2;
+        radius *= qreal(0.5);
+    }
 
-        p -= 4;
-        for (int j = c1; j < c2; j++, p -= 4)
-            for (int i = i1; i <= i2; i++)
-                p[i] = (rgba[i] += ((p[i] << 4) - rgba[i]) * alpha / 16) >> 4;
+    if (alphaOnly)
+        expblur<12, 10, true>(blurImage, radius, quality, transposed);
+    else
+        expblur<12, 10, false>(blurImage, radius, quality, transposed);
+
+    if (p) {
+        p->scale(scale, scale);
+        p->setRenderHint(QPainter::SmoothPixmapTransform);
+        p->drawImage(QRect(0, 0, blurImage.width(), blurImage.height()), blurImage);
     }
+}
 
-    return result;
+Q_GUI_EXPORT void qt_blurImage(QImage &blurImage, qreal radius, bool quality, int transposed = 0)
+{
+    if (blurImage.format() == QImage::Format_Indexed8)
+        expblur<12, 10, true>(blurImage, radius, quality, transposed);
+    else
+        expblur<12, 10, false>(blurImage, radius, quality, transposed);
 }
 
+bool qt_scaleForTransform(const QTransform &transform, qreal *scale);
+
 /*!
     \internal
 */
-void QPixmapBlurFilter::draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect) const
+void QPixmapBlurFilter::draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &rect) const
 {
     Q_D(const QPixmapBlurFilter);
     if (!painter->isActive())
         return;
 
-    if (d->radius <= 0) {
+    QRectF srcRect = rect;
+    if (srcRect.isNull())
+        srcRect = src.rect();
+
+    if (d->radius <= 1) {
         painter->drawPixmap(srcRect.translated(p), src, srcRect);
         return;
     }
 
+    qreal scaledRadius = radiusScale * d->radius;
+    qreal scale;
+    if (qt_scaleForTransform(painter->transform(), &scale))
+        scaledRadius /= scale;
+
     QPixmapFilter *filter = painter->paintEngine() && painter->paintEngine()->isExtended() ?
         static_cast<QPaintEngineEx *>(painter->paintEngine())->pixmapFilter(type(), this) : 0;
     QPixmapBlurFilter *blurFilter = static_cast<QPixmapBlurFilter*>(filter);
     if (blurFilter) {
-        blurFilter->setRadius(d->radius);
+        blurFilter->setRadius(scaledRadius);
         blurFilter->setBlurHints(d->hints);
         blurFilter->draw(painter, p, src, srcRect);
         return;
@@ -693,17 +934,17 @@ void QPixmapBlurFilter::draw(QPainter *painter, const QPointF &p, const QPixmap
     QImage srcImage;
     QImage destImage;
 
-    if (srcRect.isNull()) {
+    if (srcRect == src.rect()) {
         srcImage = src.toImage();
-        destImage = blurred(srcImage, srcImage.rect(), qRound(d->radius));
     } else {
         QRect rect = srcRect.toAlignedRect().intersected(src.rect());
-
         srcImage = src.copy(rect).toImage();
-        destImage = blurred(srcImage, srcImage.rect(), qRound(d->radius));
     }
 
-    painter->drawImage(p, destImage);
+    QTransform transform = painter->worldTransform();
+    painter->translate(p);
+    qt_blurImage(painter, srcImage, scaledRadius, (d->hints & QGraphicsBlurEffect::QualityHint), false);
+    painter->setWorldTransform(transform);
 }
 
 // grayscales the image to dest (could be same). If rect isn't defined
@@ -1095,7 +1336,13 @@ void QPixmapDropShadowFilter::draw(QPainter *p,
     tmpPainter.end();
 
     // blur the alpha channel
-    tmp = blurred(tmp, tmp.rect(), qRound(d->radius), true);
+    QImage blurred(tmp.size(), QImage::Format_ARGB32_Premultiplied);
+    blurred.fill(0);
+    QPainter blurPainter(&blurred);
+    qt_blurImage(&blurPainter, tmp, d->radius, false, true);
+    blurPainter.end();
+
+    tmp = blurred;
 
     // blacken the image...
     tmpPainter.begin(&tmp);
diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index 4a450b7..47b5f66 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -70,6 +70,7 @@ QAbstractItemViewPrivate::QAbstractItemViewPrivate()
         itemDelegate(0),
         selectionModel(0),
         ctrlDragSelectionFlag(QItemSelectionModel::NoUpdate),
+        noSelectionOnMousePress(false),
         selectionMode(QAbstractItemView::ExtendedSelection),
         selectionBehavior(QAbstractItemView::SelectItems),
         currentlyCommittingEditor(0),
@@ -1622,6 +1623,7 @@ void QAbstractItemView::mousePressEvent(QMouseEvent *event)
     d->pressedIndex = index;
     d->pressedModifiers = event->modifiers();
     QItemSelectionModel::SelectionFlags command = selectionCommand(index, event);
+    d->noSelectionOnMousePress = command == QItemSelectionModel::NoUpdate || !index.isValid();
     QPoint offset = d->offset();
     if ((command & QItemSelectionModel::Current) == 0)
         d->pressedPosition = pos + offset;
@@ -1760,9 +1762,10 @@ void QAbstractItemView::mouseReleaseEvent(QMouseEvent *event)
 
     d->ctrlDragSelectionFlag = QItemSelectionModel::NoUpdate;
 
-    //in the case the user presses on no item we might decide to clear the selection
-    if (d->selectionModel && !index.isValid())
-        d->selectionModel->select(QModelIndex(), selectionCommand(index, event));
+    if (d->selectionModel && d->noSelectionOnMousePress) {
+        d->noSelectionOnMousePress = false;
+        d->selectionModel->select(index, selectionCommand(index, event));
+    }
 
     setState(NoState);
 
diff --git a/src/gui/itemviews/qabstractitemview_p.h b/src/gui/itemviews/qabstractitemview_p.h
index 0b5cfbe..7fc6780 100644
--- a/src/gui/itemviews/qabstractitemview_p.h
+++ b/src/gui/itemviews/qabstractitemview_p.h
@@ -347,6 +347,7 @@ public:
     QMap<int, QPointer<QAbstractItemDelegate> > columnDelegates;
     QPointer<QItemSelectionModel> selectionModel;
     QItemSelectionModel::SelectionFlag ctrlDragSelectionFlag;
+    bool noSelectionOnMousePress;
 
     QAbstractItemView::SelectionMode selectionMode;
     QAbstractItemView::SelectionBehavior selectionBehavior;
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 9f4cd0c..8c63968 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -4092,9 +4092,15 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
             bool acceptTouchEvents = widget->testAttribute(Qt::WA_AcceptTouchEvents);
             touchEvent->setWidget(widget);
             touchEvent->setAccepted(acceptTouchEvents);
+            QWeakPointer<QWidget> p = widget;
             res = acceptTouchEvents && d->notify_helper(widget, touchEvent);
             eventAccepted = touchEvent->isAccepted();
-            widget->setAttribute(Qt::WA_WState_AcceptedTouchBeginEvent, res && eventAccepted);
+            if (p.isNull()) {
+                // widget was deleted
+                widget = 0;
+            } else {
+                widget->setAttribute(Qt::WA_WState_AcceptedTouchBeginEvent, res && eventAccepted);
+            }
             touchEvent->spont = false;
             if (res && eventAccepted) {
                 // the first widget to accept the TouchBegin gets an implicit grab.
@@ -4103,7 +4109,7 @@ bool QApplication::notify(QObject *receiver, QEvent *e)
                     d->widgetForTouchPointId[touchPoint.id()] = widget;
                 }
                 break;
-            } else if (widget->isWindow() || widget->testAttribute(Qt::WA_NoMousePropagation)) {
+            } else if (p.isNull() || widget->isWindow() || widget->testAttribute(Qt::WA_NoMousePropagation)) {
                 break;
             }
             QPoint offset = widget->pos();
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index 1907cca..7dc4d85 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -3654,6 +3654,16 @@ void QWidgetPrivate::setFocus_sys()
     }
 }
 
+NSComparisonResult compareViews2Raise(id view1, id view2, void *context)
+{
+    id topView = reinterpret_cast<id>(context);
+    if (view1 == topView)
+        return NSOrderedDescending;
+    if (view2 == topView)
+        return NSOrderedAscending;
+    return NSOrderedSame;
+}
+
 void QWidgetPrivate::raise_sys()
 {
     Q_Q(QWidget);
@@ -3661,7 +3671,6 @@ void QWidgetPrivate::raise_sys()
         return;
 
 #if QT_MAC_USE_COCOA
-    QMacCocoaAutoReleasePool pool;
     if (isRealWindow()) {
         // Calling orderFront shows the window on Cocoa too.
         if (!q->testAttribute(Qt::WA_DontShowOnScreen) && q->isVisible()) {
@@ -3673,16 +3682,9 @@ void QWidgetPrivate::raise_sys()
             SetFrontProcessWithOptions(&psn, kSetFrontProcessFrontWindowOnly);
         }
     } else {
-        // Cocoa doesn't really have an idea of Z-ordering, but you can
-        // fake it by changing the order of it. But beware, removing an
-        // NSView will also remove it as the first responder. So we re-set
-        // the first responder just in case:
         NSView *view = qt_mac_nativeview_for(q);
         NSView *parentView = [view superview];
-        NSResponder *firstResponder = [[view window] firstResponder];
-        [view removeFromSuperview];
-        [parentView addSubview:view];
-        [[view window] makeFirstResponder:firstResponder];
+        [parentView sortSubviewsUsingFunction:compareViews2Raise context:reinterpret_cast<void *>(view)];
     }
 #else
     if(q->isWindow()) {
@@ -3700,47 +3702,29 @@ void QWidgetPrivate::raise_sys()
 #endif
 }
 
+NSComparisonResult compareViews2Lower(id view1, id view2, void *context)
+{
+    id topView = reinterpret_cast<id>(context);
+    if (view1 == topView)
+        return NSOrderedAscending;
+    if (view2 == topView)
+        return NSOrderedDescending;
+    return NSOrderedSame;
+}
+
 void QWidgetPrivate::lower_sys()
 {
     Q_Q(QWidget);
     if((q->windowType() == Qt::Desktop))
         return;
 #ifdef QT_MAC_USE_COCOA
-    QMacCocoaAutoReleasePool pool;
     if (isRealWindow()) {
         OSWindowRef window = qt_mac_window_for(q);
         [window orderBack:window];
     } else {
-        // Cocoa doesn't really have an idea of Z-ordering, but you can
-        // fake it by changing the order of it. In this case
-        // we put the item at the beginning of the list, but that means
-        // we must re-insert everything since we cannot modify the list directly.
-        NSView *myview = qt_mac_nativeview_for(q);
-        NSView *parentView = [myview superview];
-        NSArray *tmpViews = [parentView subviews];
-        NSMutableArray *subviews = [[NSMutableArray alloc] initWithCapacity:[tmpViews count]];
-        [subviews addObjectsFromArray:tmpViews];
-        NSResponder *firstResponder = [[myview window] firstResponder];
-        // Implicit assumption that myViewIndex is included in subviews, that's why I'm not checking
-        // myViewIndex.
-        NSUInteger index = 0;
-        NSUInteger myViewIndex = 0;
-        bool foundMyView = false;
-        for (NSView *subview in subviews) {
-            [subview removeFromSuperview];
-            if (subview == myview) {
-                foundMyView = true;
-                myViewIndex = index;
-            }
-            ++index;
-        }
-        [parentView addSubview:myview];
-        if (foundMyView)
-            [subviews removeObjectAtIndex:myViewIndex];
-        for (NSView *subview in subviews)
-            [parentView addSubview:subview];
-        [subviews release];
-        [[myview window] makeFirstResponder:firstResponder];
+        NSView *view = qt_mac_nativeview_for(q);
+        NSView *parentView = [view superview];
+        [parentView sortSubviewsUsingFunction:compareViews2Lower context:reinterpret_cast<void *>(view)];
     }
 #else
     if(q->isWindow()) {
@@ -3753,6 +3737,16 @@ void QWidgetPrivate::lower_sys()
 #endif
 }
 
+NSComparisonResult compareViews2StackUnder(id view1, id view2, void *context)
+{
+    const QHash<NSView *, int> &viewOrder = *reinterpret_cast<QHash<NSView *, int> *>(context);
+    if (viewOrder[view1] < viewOrder[view2])
+        return NSOrderedAscending;
+    if (viewOrder[view1] > viewOrder[view2])
+        return NSOrderedDescending;
+    return NSOrderedSame;
+}
+
 void QWidgetPrivate::stackUnder_sys(QWidget *w)
 {
     // stackUnder
@@ -3761,37 +3755,23 @@ void QWidgetPrivate::stackUnder_sys(QWidget *w)
         return;
 #ifdef QT_MAC_USE_COCOA
     // Do the same trick as lower_sys() and put this widget before the widget passed in.
-    QMacCocoaAutoReleasePool pool;
-    NSView *myview = qt_mac_nativeview_for(q);
+    NSView *myView = qt_mac_nativeview_for(q);
     NSView *wView = qt_mac_nativeview_for(w);
-    NSView *parentView = [myview superview];
-    NSArray *tmpViews = [parentView subviews];
-    NSMutableArray *subviews = [[NSMutableArray alloc] initWithCapacity:[tmpViews count]];
-    [subviews addObjectsFromArray:tmpViews];
-    // Implicit assumption that myViewIndex and wViewIndex is included in subviews,
-    // that's why I'm not checking myViewIndex.
-    NSUInteger index = 0;
-    NSUInteger myViewIndex = 0;
-    NSUInteger wViewIndex = 0;
-    for (NSView *subview in subviews) {
-        [subview removeFromSuperview];
-        if (subview == myview)
-            myViewIndex = index;
-        else if (subview == wView)
-            wViewIndex = index;
-        ++index;
-    }
 
-    index = 0;
+    QHash<NSView *, int> viewOrder;
+    NSView *parentView = [myView superview];
+    NSArray *subviews = [parentView subviews];
+    NSUInteger index = 1;
+    // make a hash of view->zorderindex and make sure z-value is always odd,
+    // so that when we modify the order we create a new (even) z-value which
+    // will not interfere with others.
     for (NSView *subview in subviews) {
-        if (index == myViewIndex)
-            continue;
-        if (index == wViewIndex)
-            [parentView addSubview:myview];
-        [parentView addSubview:subview];
+        viewOrder.insert(subview, index * 2);
         ++index;
     }
-    [subviews release];
+    viewOrder[myView] = viewOrder[wView] - 1;
+
+    [parentView sortSubviewsUsingFunction:compareViews2StackUnder context:reinterpret_cast<void *>(&viewOrder)];
 #else
     QWidget *p = q->parentWidget();
     if(!p || p != w->parentWidget())
diff --git a/src/gui/painting/qmemrotate.cpp b/src/gui/painting/qmemrotate.cpp
index 67dc2c7..e3a6f78 100644
--- a/src/gui/painting/qmemrotate.cpp
+++ b/src/gui/painting/qmemrotate.cpp
@@ -572,5 +572,26 @@ QT_IMPL_MEMROTATE(quint32, qrgb_generic16)
 QT_IMPL_MEMROTATE(quint16, qrgb_generic16)
 #endif
 
+struct qrgb_gl_rgba
+{
+public:
+    inline qrgb_gl_rgba(quint32 v) {
+        if (QSysInfo::ByteOrder == QSysInfo::LittleEndian)
+            data = ((v << 16) & 0xff0000) | ((v >> 16) & 0xff) | (v & 0xff00ff00);
+        else
+            data = (v << 8) | ((v >> 24) & 0xff);
+    }
+
+    inline operator quint32() const { return data; }
+
+private:
+    quint32 data;
+} Q_PACKED;
+
+void Q_GUI_EXPORT qt_memrotate90_gl(const quint32 *src, int srcWidth, int srcHeight, int srcStride,
+                                    quint32 *dest, int dstStride)
+{
+    qt_memrotate90_template(src, srcWidth, srcHeight, srcStride, reinterpret_cast<qrgb_gl_rgba *>(dest), dstStride);
+}
 
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qmemrotate_p.h b/src/gui/painting/qmemrotate_p.h
index 676a880..8aee575 100644
--- a/src/gui/painting/qmemrotate_p.h
+++ b/src/gui/painting/qmemrotate_p.h
@@ -81,6 +81,8 @@ QT_BEGIN_NAMESPACE
     void Q_GUI_QWS_EXPORT qt_memrotate180(const srctype*, int, int, int, desttype*, int); \
     void Q_GUI_QWS_EXPORT qt_memrotate270(const srctype*, int, int, int, desttype*, int)
 
+void Q_GUI_EXPORT qt_memrotate90(const quint32*, int, int, int, quint32*, int);
+
 QT_DECL_MEMROTATE(quint32, quint32);
 QT_DECL_MEMROTATE(quint32, quint16);
 QT_DECL_MEMROTATE(quint16, quint32);
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 33496a9..8ed126f 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -1355,6 +1355,12 @@ void QPainterPrivate::updateState(QPainterState *newState)
     onto a QGLWidget or by passing \c {-graphicssystem opengl} on the
     command line when the underlying system supports it.
 
+    \o OpenVG - This backend implements the Khronos standard for 2D
+    and Vector Graphics. It is primarily for embedded devices with
+    hardware support for OpenVG.  The engine can be enabled by
+    passing \c {-graphicssystem openvg} on the command line when
+    the underlying system supports it.
+
     \endlist
 
     These operations are:
diff --git a/src/gui/painting/qprinterinfo_unix.cpp b/src/gui/painting/qprinterinfo_unix.cpp
index 6684ff7..930785b 100644
--- a/src/gui/painting/qprinterinfo_unix.cpp
+++ b/src/gui/painting/qprinterinfo_unix.cpp
@@ -75,7 +75,9 @@ private:
     QString                     m_name;
     bool                        m_isNull;
     bool                        m_default;
-    QList<QPrinter::PaperSize>  m_paperSizes;
+    mutable bool                m_mustGetPaperSizes;
+    mutable QList<QPrinter::PaperSize> m_paperSizes;
+    int                         m_cupsPrinterIndex;
 
     QPrinterInfo*               q_ptr;
 };
@@ -838,16 +840,7 @@ QList<QPrinterInfo> QPrinterInfo::availablePrinters()
             list.append(QPrinterInfo(printerName));
             if (cupsPrinters[i].is_default)
                 list[i].d_ptr->m_default = true;
-            // Find paper sizes.
-            cups.setCurrentPrinter(i);
-            const ppd_option_t* sizes = cups.pageSizes();
-            if (sizes) {
-                for (int j = 0; j < sizes->num_choices; ++j) {
-                    list[i].d_ptr->m_paperSizes.append(
-                            QPrinterInfoPrivate::string2PaperSize(
-                            QLatin1String(sizes->choices[j].choice)));
-                }
-            }
+            list[i].d_ptr->m_cupsPrinterIndex = i;
         }
     } else {
 #endif
@@ -909,16 +902,7 @@ QPrinterInfo::QPrinterInfo(const QPrinter& printer)
             if (printerName == printer.printerName()) {
                 if (cupsPrinters[i].is_default)
                     d->m_default = true;
-                // Find paper sizes.
-                cups.setCurrentPrinter(i);
-                const ppd_option_t* sizes = cups.pageSizes();
-                if (sizes) {
-                    for (int j = 0; j < sizes->num_choices; ++j) {
-                        d->m_paperSizes.append(
-                                QPrinterInfoPrivate::string2PaperSize(
-                                QLatin1String(sizes->choices[j].choice)));
-                    }
-                }
+                d->m_cupsPrinterIndex = i;
                 return;
             }
         }
@@ -983,6 +967,26 @@ bool QPrinterInfo::isDefault() const
 QList< QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
 {
     const Q_D(QPrinterInfo);
+    if (d->m_mustGetPaperSizes) {
+        d->m_mustGetPaperSizes = false;
+
+#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
+        QCUPSSupport cups;
+        if (QCUPSSupport::isAvailable()) {
+            // Find paper sizes from CUPS.
+            cups.setCurrentPrinter(d->m_cupsPrinterIndex);
+            const ppd_option_t* sizes = cups.pageSizes();
+            if (sizes) {
+                for (int j = 0; j < sizes->num_choices; ++j) {
+                    d->m_paperSizes.append(
+                        QPrinterInfoPrivate::string2PaperSize(
+                            QLatin1String(sizes->choices[j].choice)));
+                }
+            }
+        }
+#endif
+
+    }
     return d->m_paperSizes;
 }
 
@@ -993,6 +997,8 @@ QPrinterInfoPrivate::QPrinterInfoPrivate()
 {
     m_isNull = true;
     m_default = false;
+    m_mustGetPaperSizes = true;
+    m_cupsPrinterIndex = 0;
     q_ptr = 0;
 }
 
@@ -1001,6 +1007,8 @@ QPrinterInfoPrivate::QPrinterInfoPrivate(const QString& name)
     m_name = name;
     m_isNull = false;
     m_default = false;
+    m_mustGetPaperSizes = true;
+    m_cupsPrinterIndex = 0;
     q_ptr = 0;
 }
 
diff --git a/src/gui/styles/qgtkstyle.cpp b/src/gui/styles/qgtkstyle.cpp
index afa3325..e10bb41 100644
--- a/src/gui/styles/qgtkstyle.cpp
+++ b/src/gui/styles/qgtkstyle.cpp
@@ -3375,12 +3375,28 @@ QIcon QGtkStyle::standardIconImplementation(StandardPixmap standardIcon,
 /*! \reimp */
 QRect QGtkStyle::subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const
 {
+    Q_D(const QGtkStyle);
+
     QRect r = QCleanlooksStyle::subElementRect(element, option, widget);
     switch (element) {
     case SE_ProgressBarLabel:
     case SE_ProgressBarContents:
     case SE_ProgressBarGroove:
         return option->rect;
+    case SE_PushButtonContents:
+        if (!d->gtk_check_version(2, 10, 0)) {
+            GtkWidget *gtkButton = d->gtkWidget(QLS("GtkButton"));
+            GtkBorder *border = 0;
+            d->gtk_widget_style_get(gtkButton, "inner-border", &border, NULL);
+            if (border) {
+                r = option->rect.adjusted(border->left, border->top, -border->right, -border->bottom);
+                d->gtk_border_free(border);
+            } else {
+                r = option->rect.adjusted(1, 1, -1, -1);
+            }
+            r = visualRect(option->direction, option->rect, r);
+        }
+        break;
     default:
         break;
     }
diff --git a/src/gui/styles/qgtkstyle_p.cpp b/src/gui/styles/qgtkstyle_p.cpp
index 22dfc62..a644a5b 100644
--- a/src/gui/styles/qgtkstyle_p.cpp
+++ b/src/gui/styles/qgtkstyle_p.cpp
@@ -158,6 +158,7 @@ Ptr_gtk_window_get_type QGtkStylePrivate::gtk_window_get_type = 0;
 Ptr_gtk_widget_get_type QGtkStylePrivate::gtk_widget_get_type = 0;
 Ptr_gtk_rc_get_style_by_paths QGtkStylePrivate::gtk_rc_get_style_by_paths = 0;
 Ptr_gtk_check_version QGtkStylePrivate::gtk_check_version = 0;
+Ptr_gtk_border_free QGtkStylePrivate::gtk_border_free = 0;
 
 Ptr_pango_font_description_get_size QGtkStylePrivate::pango_font_description_get_size = 0;
 Ptr_pango_font_description_get_weight QGtkStylePrivate::pango_font_description_get_weight = 0;
@@ -416,6 +417,7 @@ void QGtkStylePrivate::resolveGtk() const
     gtk_widget_get_type =(Ptr_gtk_widget_get_type)libgtk.resolve("gtk_widget_get_type");
     gtk_rc_get_style_by_paths =(Ptr_gtk_rc_get_style_by_paths)libgtk.resolve("gtk_rc_get_style_by_paths");
     gtk_check_version =(Ptr_gtk_check_version)libgtk.resolve("gtk_check_version");
+    gtk_border_free =(Ptr_gtk_border_free)libgtk.resolve("gtk_border_free");
     pango_font_description_get_size = (Ptr_pango_font_description_get_size)libgtk.resolve("pango_font_description_get_size");
     pango_font_description_get_weight = (Ptr_pango_font_description_get_weight)libgtk.resolve("pango_font_description_get_weight");
     pango_font_description_get_family = (Ptr_pango_font_description_get_family)libgtk.resolve("pango_font_description_get_family");
diff --git a/src/gui/styles/qgtkstyle_p.h b/src/gui/styles/qgtkstyle_p.h
index f6ab8a3..c27308f 100644
--- a/src/gui/styles/qgtkstyle_p.h
+++ b/src/gui/styles/qgtkstyle_p.h
@@ -176,6 +176,7 @@ typedef GtkWidget* (*Ptr_gtk_file_chooser_dialog_new)(const gchar *title,
 typedef void (*Ptr_gtk_file_chooser_set_current_name) (GtkFileChooser *, const gchar *);
 typedef gboolean (*Ptr_gtk_file_chooser_set_filename) (GtkFileChooser *chooser, const gchar *name);
 typedef gint (*Ptr_gtk_dialog_run) (GtkDialog*);
+typedef void (*Ptr_gtk_border_free)(GtkBorder *);
 
 typedef guchar* (*Ptr_gdk_pixbuf_get_pixels) (const GdkPixbuf *pixbuf);
 typedef int (*Ptr_gdk_pixbuf_get_width) (const GdkPixbuf *pixbuf);
@@ -371,6 +372,7 @@ public:
     static Ptr_gtk_widget_get_type gtk_widget_get_type;
     static Ptr_gtk_rc_get_style_by_paths gtk_rc_get_style_by_paths;
     static Ptr_gtk_check_version gtk_check_version;
+    static Ptr_gtk_border_free gtk_border_free;
 
     static Ptr_pango_font_description_get_size pango_font_description_get_size;
     static Ptr_pango_font_description_get_weight pango_font_description_get_weight;
diff --git a/src/gui/util/qsystemtrayicon.cpp b/src/gui/util/qsystemtrayicon.cpp
index c6ea00f..6f2b501 100644
--- a/src/gui/util/qsystemtrayicon.cpp
+++ b/src/gui/util/qsystemtrayicon.cpp
@@ -380,6 +380,9 @@ bool QSystemTrayIcon::supportsMessages()
     On Windows, the \a millisecondsTimeoutHint is usually ignored by the system
     when the application has focus.
 
+    On Mac OS X, the Growl notification system must be installed for this function to
+    display messages.
+ 
     \sa show() supportsMessages()
   */
 void QSystemTrayIcon::showMessage(const QString& title, const QString& msg,
diff --git a/src/gui/util/qsystemtrayicon_mac.mm b/src/gui/util/qsystemtrayicon_mac.mm
index b74ca85..93295a7 100644
--- a/src/gui/util/qsystemtrayicon_mac.mm
+++ b/src/gui/util/qsystemtrayicon_mac.mm
@@ -314,8 +314,22 @@ QT_END_NAMESPACE
 {
     Q_UNUSED(notification);
     down = NO;
+
+    if( ![self icon]->icon().isNull() ) {
+#ifndef QT_MAC_USE_COCOA
+        const short scale = GetMBarHeight()-4;
+#else
+        CGFloat hgt = [[[NSApplication sharedApplication] mainMenu] menuBarHeight];
+        const short scale = hgt - 4;
+#endif
+        NSImage *nsimage = static_cast<NSImage *>(qt_mac_create_nsimage([self icon]->icon().pixmap(QSize(scale, scale))));
+        [self setImage: nsimage];
+        [nsimage release];
+    }
+
     if([self icon]->contextMenu())
         [self icon]->contextMenu()->hide();
+
     [self setNeedsDisplay:YES];
 }
 
@@ -327,6 +341,20 @@ QT_END_NAMESPACE
         [self icon]->contextMenu()->hide();
     [self setNeedsDisplay:YES];
 
+#ifndef QT_MAC_USE_COCOA
+    const short scale = GetMBarHeight()-4;
+#else
+    CGFloat hgt = [[[NSApplication sharedApplication] mainMenu] menuBarHeight];
+    const short scale = hgt - 4;
+#endif
+
+    if( down && ![self icon]->icon().isNull() ) {
+        NSImage *nsaltimage = static_cast<NSImage *>(qt_mac_create_nsimage([self icon]->icon().pixmap(QSize(scale, scale), QIcon::Selected)));
+        [self setImage: nsaltimage];
+        [nsaltimage release];
+    }
+
+
     if (down)
         [parent triggerSelector:self];
     else if ((clickCount%2))