Merge remote-tracking branch 'origin/master' into lighthouse-master

34 files changed, 489 insertions, 445 deletions

diff --git a/src/gui/painting/qbackingstore.cpp b/src/gui/painting/qbackingstore.cpp
index e5d8abc..42c1c35 100644
--- a/src/gui/painting/qbackingstore.cpp
+++ b/src/gui/painting/qbackingstore.cpp
@@ -588,7 +588,7 @@ void QWidgetBackingStore::markDirty(const QRegion &rgn, QWidget *widget, bool up
         return;
     }
 
-    if (!windowSurface->hasPartialUpdateSupport()) {
+    if (!windowSurface->hasFeature(QWindowSurface::PartialUpdates)) {
         fullUpdatePending = true;
         sendUpdateRequest(tlw, updateImmediately);
         return;
@@ -683,7 +683,7 @@ void QWidgetBackingStore::markDirty(const QRect &rect, QWidget *widget, bool upd
         return;
     }
 
-    if (!windowSurface->hasPartialUpdateSupport()) {
+    if (!windowSurface->hasFeature(QWindowSurface::PartialUpdates)) {
         fullUpdatePending = true;
         sendUpdateRequest(tlw, updateImmediately);
         return;
@@ -1143,9 +1143,9 @@ void QWidgetBackingStore::sync(QWidget *exposedWidget, const QRegion &exposedReg
         return;
     }
 
-    // If there's no partial update support we always need
+    // If there's no preserved contents support we always need
     // to do a full repaint before flushing
-    if (!windowSurface->hasPartialUpdateSupport())
+    if (!windowSurface->hasFeature(QWindowSurface::PreservedContents))
         fullUpdatePending = true;
 
     // Nothing to repaint.
diff --git a/src/gui/painting/qbackingstore_p.h b/src/gui/painting/qbackingstore_p.h
index 47387ab..05f4bfc 100644
--- a/src/gui/painting/qbackingstore_p.h
+++ b/src/gui/painting/qbackingstore_p.h
@@ -262,7 +262,7 @@ private:
     }
 
     inline bool hasStaticContents() const
-    { return !staticWidgets.isEmpty() && windowSurface->hasStaticContentsSupport(); }
+    { return !staticWidgets.isEmpty() && windowSurface->hasFeature(QWindowSurface::StaticContents); }
 
     friend QRegion qt_dirtyRegion(QWidget *);
     friend class QWidgetPrivate;
diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp
index 119cf1c..a2f0edd 100644
--- a/src/gui/painting/qbezier.cpp
+++ b/src/gui/painting/qbezier.cpp
@@ -65,13 +65,6 @@ QT_BEGIN_NAMESPACE
 #define M_SQRT2	1.41421356237309504880
 #endif
 
-#define log2(x) (qLn(x)/qLn(2.))
-
-static inline qreal log4(qreal x)
-{
-    return qreal(0.5) * log2(x);
-}
-
 /*!
   \internal
 */
@@ -184,7 +177,7 @@ static inline bool findInflections(qreal a, qreal b, qreal c,
             *t2 = r1;
         }
         if (!qFuzzyIsNull(a))
-            *tCups = 0.5 * (-b / a);
+            *tCups = qreal(0.5) * (-b / a);
         else
             *tCups = 2;
 
@@ -274,8 +267,8 @@ static ShiftResult good_offset(const QBezier *b1, const QBezier *b2, qreal offse
     const qreal o2 = offset*offset;
     const qreal max_dist_line = threshold*offset*offset;
     const qreal max_dist_normal = threshold*offset;
-    const qreal spacing = 0.25;
-    for (qreal i = spacing; i < 0.99; i += spacing) {
+    const qreal spacing = qreal(0.25);
+    for (qreal i = spacing; i < qreal(0.99); i += spacing) {
         QPointF p1 = b1->pointAt(i);
         QPointF p2 = b2->pointAt(i);
         qreal d = (p1.x() - p2.x())*(p1.x() - p2.x()) + (p1.y() - p2.y())*(p1.y() - p2.y());
@@ -284,7 +277,7 @@ static ShiftResult good_offset(const QBezier *b1, const QBezier *b2, qreal offse
 
         QPointF normalPoint = b1->normalVector(i);
         qreal l = qAbs(normalPoint.x()) + qAbs(normalPoint.y());
-        if (l != 0.) {
+        if (l != qreal(0.0)) {
             d = qAbs( normalPoint.x()*(p1.y() - p2.y()) - normalPoint.y()*(p1.x() - p2.x()) ) / l;
             if (d > max_dist_normal)
                 return Split;
@@ -350,7 +343,7 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr
 
         QPointF normal_sum = prev_normal + next_normal;
 
-        qreal r = 1.0 + prev_normal.x() * next_normal.x()
+        qreal r = qreal(1.0) + prev_normal.x() * next_normal.x()
                   + prev_normal.y() * next_normal.y();
 
         if (qFuzzyIsNull(r)) {
@@ -374,7 +367,7 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr
 // This value is used to determine the length of control point vectors
 // when approximating arc segments as curves. The factor is multiplied
 // with the radius of the circle.
-#define KAPPA 0.5522847498
+#define KAPPA qreal(0.5522847498)
 
 
 static bool addCircle(const QBezier *b, qreal offset, QBezier *o)
@@ -417,11 +410,11 @@ static bool addCircle(const QBezier *b, qreal offset, QBezier *o)
 
     QPointF circle[3];
     circle[0] = QPointF(b->x1, b->y1) + normals[0]*offset;
-    circle[1] = QPointF(0.5*(b->x1 + b->x4), 0.5*(b->y1 + b->y4)) + normals[1]*offset;
+    circle[1] = QPointF(qreal(0.5)*(b->x1 + b->x4), qreal(0.5)*(b->y1 + b->y4)) + normals[1]*offset;
     circle[2] = QPointF(b->x4, b->y4) + normals[2]*offset;
 
     for (int i = 0; i < 2; ++i) {
-        qreal kappa = 2.*KAPPA * sign * offset * angles[i];
+        qreal kappa = qreal(2.0) * KAPPA * sign * offset * angles[i];
 
         o->x1 = circle[i].x();
         o->y1 = circle[i].y();
@@ -456,8 +449,8 @@ redo:
     while (b >= beziers) {
         int stack_segments = b - beziers + 1;
         if ((stack_segments == 10) || (o - curveSegments == maxSegments - stack_segments)) {
-            threshold *= 1.5;
-            if (threshold > 2.)
+            threshold *= qreal(1.5);
+            if (threshold > qreal(2.0))
                 goto give_up;
             goto redo;
         }
@@ -535,7 +528,7 @@ static inline void splitBezierAt(const QBezier &bez, qreal t,
 
 qreal QBezier::length(qreal error) const
 {
-    qreal length = 0.0;
+    qreal length = qreal(0.0);
 
     addIfClose(&length, error);
 
@@ -546,8 +539,8 @@ void QBezier::addIfClose(qreal *length, qreal error) const
 {
     QBezier left, right;     /* bez poly splits */
 
-    qreal len = 0.0;        /* arc length */
-    qreal chord;            /* chord length */
+    qreal len = qreal(0.0);  /* arc length */
+    qreal chord;             /* chord length */
 
     len = len + QLineF(QPointF(x1, y1),QPointF(x2, y2)).length();
     len = len + QLineF(QPointF(x2, y2),QPointF(x3, y3)).length();
@@ -589,7 +582,7 @@ qreal QBezier::tForY(qreal t0, qreal t1, qreal y) const
     qreal lt = t0;
     qreal dt;
     do {
-        qreal t = 0.5 * (t0 + t1);
+        qreal t = qreal(0.5) * (t0 + t1);
 
         qreal a, b, c, d;
         QBezier::coefficients(t, a, b, c, d);
@@ -604,7 +597,7 @@ qreal QBezier::tForY(qreal t0, qreal t1, qreal y) const
         }
         dt = lt - t;
         lt = t;
-    } while (qAbs(dt) > 1e-7);
+    } while (qAbs(dt) > qreal(1e-7));
 
     return t0;
 }
@@ -661,15 +654,15 @@ int QBezier::stationaryYPoints(qreal &t0, qreal &t1) const
 qreal QBezier::tAtLength(qreal l) const
 {
     qreal len = length();
-    qreal t   = 1.0;
-    const qreal error = (qreal)0.01;
+    qreal t   = qreal(1.0);
+    const qreal error = qreal(0.01);
     if (l > len || qFuzzyCompare(l, len))
         return t;
 
-    t *= 0.5;
+    t *= qreal(0.5);
     //int iters = 0;
     //qDebug()<<"LEN is "<<l<<len;
-    qreal lastBigger = 1.;
+    qreal lastBigger = qreal(1.0);
     while (1) {
         //qDebug()<<"\tt is "<<t;
         QBezier right = *this;
@@ -680,10 +673,10 @@ qreal QBezier::tAtLength(qreal l) const
             break;
 
         if (lLen < l) {
-            t += (lastBigger - t)*.5;
+            t += (lastBigger - t) * qreal(0.5);
         } else {
             lastBigger = t;
-            t -= t*.5;
+            t -= t * qreal(0.5);
         }
         //++iters;
     }
diff --git a/src/gui/painting/qblendfunctions_p.h b/src/gui/painting/qblendfunctions_p.h
index 8aff912..81f8b70 100644
--- a/src/gui/painting/qblendfunctions_p.h
+++ b/src/gui/painting/qblendfunctions_p.h
@@ -275,8 +275,8 @@ void qt_transform_image_rasterize(DestT *destPixels, int dbpl,
     qreal rightSlope = (bottomRight.x - topRight.x) / (bottomRight.y - topRight.y);
     int dx_l = int(leftSlope * 0x10000);
     int dx_r = int(rightSlope * 0x10000);
-    int x_l = int((topLeft.x + (0.5 + fromY - topLeft.y) * leftSlope + 0.5) * 0x10000);
-    int x_r = int((topRight.x + (0.5 + fromY - topRight.y) * rightSlope + 0.5) * 0x10000);
+    int x_l = int((topLeft.x + (qreal(0.5) + fromY - topLeft.y) * leftSlope + qreal(0.5)) * 0x10000);
+    int x_r = int((topRight.x + (qreal(0.5) + fromY - topRight.y) * rightSlope + qreal(0.5)) * 0x10000);
 
     int fromX, toX, x1, x2, u, v, i, ii;
     DestT *line;
@@ -471,8 +471,8 @@ void qt_transform_image(DestT *destPixels, int dbpl,
     int dvdx = int(m21 * 0x10000);
     int dudy = int(m12 * 0x10000);
     int dvdy = int(m22 * 0x10000);
-    int u0 = qCeil((0.5 * m11 + 0.5 * m12 + mdx) * 0x10000) - 1;
-    int v0 = qCeil((0.5 * m21 + 0.5 * m22 + mdy) * 0x10000) - 1;
+    int u0 = qCeil((qreal(0.5) * m11 + qreal(0.5) * m12 + mdx) * 0x10000) - 1;
+    int v0 = qCeil((qreal(0.5) * m21 + qreal(0.5) * m22 + mdy) * 0x10000) - 1;
 
     int x1 = qFloor(sourceRect.left());
     int y1 = qFloor(sourceRect.top());
diff --git a/src/gui/painting/qbrush.cpp b/src/gui/painting/qbrush.cpp
index 811f3ae..bf5764a 100644
--- a/src/gui/painting/qbrush.cpp
+++ b/src/gui/painting/qbrush.cpp
@@ -49,6 +49,7 @@
 #include "qdebug.h"
 #include <QtCore/qcoreapplication.h>
 #include "private/qstylehelper_p.h"
+#include <QtCore/qnumeric.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -1369,13 +1370,14 @@ QGradient::QGradient()
 
 void QGradient::setColorAt(qreal pos, const QColor &color)
 {
-    if (pos > 1 || pos < 0) {
+    if ((pos > 1 || pos < 0) && !qIsNaN(pos)) {
         qWarning("QGradient::setColorAt: Color position must be specified in the range 0 to 1");
         return;
     }
 
     int index = 0;
-    while (index < m_stops.size() && m_stops.at(index).first < pos) ++index;
+    if (!qIsNaN(pos))
+        while (index < m_stops.size() && m_stops.at(index).first < pos) ++index;
 
     if (index < m_stops.size() && m_stops.at(index).first == pos)
         m_stops[index].second = color;
@@ -1785,7 +1787,7 @@ static QPointF qt_radial_gradient_adapt_focal_point(const QPointF &center,
     // We have a one pixel buffer zone to avoid numerical instability on the
     // circle border
     //### this is hacky because technically we should adjust based on current matrix
-    const qreal compensated_radius = radius - radius * 0.001;
+    const qreal compensated_radius = radius - radius * qreal(0.001);
     QLineF line(center, focalPoint);
     if (line.length() > (compensated_radius))
         line.setLength(compensated_radius);
diff --git a/src/gui/painting/qcolor.cpp b/src/gui/painting/qcolor.cpp
index 73a6ed8..ff6c24e 100644
--- a/src/gui/painting/qcolor.cpp
+++ b/src/gui/painting/qcolor.cpp
@@ -629,7 +629,7 @@ void QColor::getHsvF(qreal *h, qreal *s, qreal *v, qreal *a) const
         return;
     }
 
-    *h = ct.ahsv.hue == USHRT_MAX ? -1.0 : ct.ahsv.hue / 36000.0;
+    *h = ct.ahsv.hue == USHRT_MAX ? qreal(-1.0) : ct.ahsv.hue / qreal(36000.0);
     *s = ct.ahsv.saturation / qreal(USHRT_MAX);
     *v = ct.ahsv.value / qreal(USHRT_MAX);
 
@@ -676,17 +676,17 @@ void QColor::getHsv(int *h, int *s, int *v, int *a) const
 */
 void QColor::setHsvF(qreal h, qreal s, qreal v, qreal a)
 {
-    if (((h < 0.0 || h > 1.0) && h != -1.0)
-        || (s < 0.0 || s > 1.0)
-        || (v < 0.0 || v > 1.0)
-        || (a < 0.0 || a > 1.0)) {
+    if (((h < qreal(0.0) || h > qreal(1.0)) && h != qreal(-1.0))
+        || (s < qreal(0.0) || s > qreal(1.0))
+        || (v < qreal(0.0) || v > qreal(1.0))
+        || (a < qreal(0.0) || a > qreal(1.0))) {
         qWarning("QColor::setHsvF: HSV parameters out of range");
         return;
     }
 
     cspec = Hsv;
     ct.ahsv.alpha      = qRound(a * USHRT_MAX);
-    ct.ahsv.hue        = h == -1.0 ? USHRT_MAX : qRound(h * 36000);
+    ct.ahsv.hue        = h == qreal(-1.0) ? USHRT_MAX : qRound(h * 36000);
     ct.ahsv.saturation = qRound(s * USHRT_MAX);
     ct.ahsv.value      = qRound(v * USHRT_MAX);
     ct.ahsv.pad        = 0;
@@ -740,7 +740,7 @@ void QColor::getHslF(qreal *h, qreal *s, qreal *l, qreal *a) const
         return;
     }
 
-    *h = ct.ahsl.hue == USHRT_MAX ? -1.0 : ct.ahsl.hue / 36000.0;
+    *h = ct.ahsl.hue == USHRT_MAX ? qreal(-1.0) : ct.ahsl.hue / qreal(36000.0);
     *s = ct.ahsl.saturation / qreal(USHRT_MAX);
     *l = ct.ahsl.lightness / qreal(USHRT_MAX);
 
@@ -790,17 +790,17 @@ void QColor::getHsl(int *h, int *s, int *l, int *a) const
 */
 void QColor::setHslF(qreal h, qreal s, qreal l, qreal a)
 {
-    if (((h < 0.0 || h > 1.0) && h != -1.0)
-        || (s < 0.0 || s > 1.0)
-        || (l < 0.0 || l > 1.0)
-        || (a < 0.0 || a > 1.0)) {
+    if (((h < qreal(0.0) || h > qreal(1.0)) && h != qreal(-1.0))
+        || (s < qreal(0.0) || s > qreal(1.0))
+        || (l < qreal(0.0) || l > qreal(1.0))
+        || (a < qreal(0.0) || a > qreal(1.0))) {
         qWarning("QColor::setHsvF: HSV parameters out of range");
         return;
     }
 
     cspec = Hsl;
     ct.ahsl.alpha      = qRound(a * USHRT_MAX);
-    ct.ahsl.hue        = h == -1.0 ? USHRT_MAX : qRound(h * 36000);
+    ct.ahsl.hue        = h == qreal(-1.0) ? USHRT_MAX : qRound(h * 36000);
     ct.ahsl.saturation = qRound(s * USHRT_MAX);
     ct.ahsl.lightness  = qRound(l * USHRT_MAX);
     ct.ahsl.pad        = 0;
@@ -909,10 +909,10 @@ void QColor::getRgb(int *r, int *g, int *b, int *a) const
 */
 void QColor::setRgbF(qreal r, qreal g, qreal b, qreal a)
 {
-    if (r < 0.0 || r > 1.0
-        || g < 0.0 || g > 1.0
-        || b < 0.0 || b > 1.0
-        || a < 0.0 || a > 1.0) {
+    if (r < qreal(0.0) || r > qreal(1.0)
+        || g < qreal(0.0) || g > qreal(1.0)
+        || b < qreal(0.0) || b > qreal(1.0)
+        || a < qreal(0.0) || a > qreal(1.0)) {
         qWarning("QColor::setRgbF: RGB parameters out of range");
         invalidate();
         return;
@@ -1322,7 +1322,7 @@ qreal QColor::hsvHueF() const
 {
     if (cspec != Invalid && cspec != Hsv)
         return toHsv().hueF();
-    return ct.ahsv.hue == USHRT_MAX ? -1.0 : ct.ahsv.hue / 36000.0;
+    return ct.ahsv.hue == USHRT_MAX ? qreal(-1.0) : ct.ahsv.hue / qreal(36000.0);
 }
 
 /*!
@@ -1418,7 +1418,7 @@ qreal QColor::hslHueF() const
 {
     if (cspec != Invalid && cspec != Hsl)
         return toHsl().hslHueF();
-    return ct.ahsl.hue == USHRT_MAX ? -1.0 : ct.ahsl.hue / 36000.0;
+    return ct.ahsl.hue == USHRT_MAX ? qreal(-1.0) : ct.ahsl.hue / qreal(36000.0);
 }
 
 /*!
@@ -1584,10 +1584,10 @@ QColor QColor::toRgb() const
             const qreal v = ct.ahsv.value / qreal(USHRT_MAX);
             const int i = int(h);
             const qreal f = h - i;
-            const qreal p = v * (1.0 - s);
+            const qreal p = v * (qreal(1.0) - s);
 
             if (i & 1) {
-                const qreal q = v * (1.0 - (s * f));
+                const qreal q = v * (qreal(1.0) - (s * f));
 
                 switch (i) {
                 case 1:
@@ -1607,7 +1607,7 @@ QColor QColor::toRgb() const
                     break;
                 }
             } else {
-                const qreal t = v * (1.0 - (s * (1.0 - f)));
+                const qreal t = v * (qreal(1.0) - (s * (qreal(1.0) - f)));
 
                 switch (i) {
                 case 0:
@@ -1683,9 +1683,9 @@ QColor QColor::toRgb() const
             const qreal y = ct.acmyk.yellow / qreal(USHRT_MAX);
             const qreal k = ct.acmyk.black / qreal(USHRT_MAX);
 
-            color.ct.argb.red   = qRound((1.0 - (c * (1.0 - k) + k)) * USHRT_MAX);
-            color.ct.argb.green = qRound((1.0 - (m * (1.0 - k) + k)) * USHRT_MAX);
-            color.ct.argb.blue  = qRound((1.0 - (y * (1.0 - k) + k)) * USHRT_MAX);
+            color.ct.argb.red   = qRound((qreal(1.0) - (c * (qreal(1.0) - k) + k)) * USHRT_MAX);
+            color.ct.argb.green = qRound((qreal(1.0) - (m * (qreal(1.0) - k) + k)) * USHRT_MAX);
+            color.ct.argb.blue  = qRound((qreal(1.0) - (y * (qreal(1.0) - k) + k)) * USHRT_MAX);
             break;
         }
     default:
@@ -1737,15 +1737,15 @@ QColor QColor::toHsv() const
         if (qFuzzyCompare(r, max)) {
             hue = ((g - b) /delta);
         } else if (qFuzzyCompare(g, max)) {
-            hue = (2.0 + (b - r) / delta);
+            hue = (qreal(2.0) + (b - r) / delta);
         } else if (qFuzzyCompare(b, max)) {
-            hue = (4.0 + (r - g) / delta);
+            hue = (qreal(4.0) + (r - g) / delta);
         } else {
             Q_ASSERT_X(false, "QColor::toHsv", "internal error");
         }
-        hue *= 60.0;
-        if (hue < 0.0)
-            hue += 360.0;
+        hue *= qreal(60.0);
+        if (hue < qreal(0.0))
+            hue += qreal(360.0);
         color.ct.ahsv.hue = qRound(hue * 100);
     }
 
@@ -1793,15 +1793,15 @@ QColor QColor::toHsl() const
         if (qFuzzyCompare(r, max)) {
             hue = ((g - b) /delta);
         } else if (qFuzzyCompare(g, max)) {
-            hue = (2.0 + (b - r) / delta);
+            hue = (qreal(2.0) + (b - r) / delta);
         } else if (qFuzzyCompare(b, max)) {
-            hue = (4.0 + (r - g) / delta);
+            hue = (qreal(4.0) + (r - g) / delta);
         } else {
             Q_ASSERT_X(false, "QColor::toHsv", "internal error");
         }
-        hue *= 60.0;
-        if (hue < 0.0)
-            hue += 360.0;
+        hue *= qreal(60.0);
+        if (hue < qreal(0.0))
+            hue += qreal(360.0);
         color.ct.ahsl.hue = qRound(hue * 100);
     }
 
@@ -1829,17 +1829,17 @@ QColor QColor::toCmyk() const
     const qreal r = ct.argb.red   / qreal(USHRT_MAX);
     const qreal g = ct.argb.green / qreal(USHRT_MAX);
     const qreal b = ct.argb.blue  / qreal(USHRT_MAX);
-    qreal c = 1.0 - r;
-    qreal m = 1.0 - g;
-    qreal y = 1.0 - b;
+    qreal c = qreal(1.0) - r;
+    qreal m = qreal(1.0) - g;
+    qreal y = qreal(1.0) - b;
 
     // cmy -> cmyk
     const qreal k = qMin(c, qMin(m, y));
 
     if (!qFuzzyIsNull(k - 1)) {
-        c = (c - k) / (1.0 - k);
-        m = (m - k) / (1.0 - k);
-        y = (y - k) / (1.0 - k);
+        c = (c - k) / (qreal(1.0) - k);
+        m = (m - k) / (qreal(1.0) - k);
+        y = (y - k) / (qreal(1.0) - k);
     }
 
     color.ct.acmyk.cyan    = qRound(c * USHRT_MAX);
@@ -1942,10 +1942,10 @@ QColor QColor::fromRgb(int r, int g, int b, int a)
 */
 QColor QColor::fromRgbF(qreal r, qreal g, qreal b, qreal a)
 {
-    if (r < 0.0 || r > 1.0
-        || g < 0.0 || g > 1.0
-        || b < 0.0 || b > 1.0
-        || a < 0.0 || a > 1.0) {
+    if (r < qreal(0.0) || r > qreal(1.0)
+        || g < qreal(0.0) || g > qreal(1.0)
+        || b < qreal(0.0) || b > qreal(1.0)
+        || a < qreal(0.0) || a > qreal(1.0)) {
         qWarning("QColor::fromRgbF: RGB parameters out of range");
         return QColor();
     }
@@ -2005,10 +2005,10 @@ QColor QColor::fromHsv(int h, int s, int v, int a)
 */
 QColor QColor::fromHsvF(qreal h, qreal s, qreal v, qreal a)
 {
-    if (((h < 0.0 || h > 1.0) && h != -1.0)
-        || (s < 0.0 || s > 1.0)
-        || (v < 0.0 || v > 1.0)
-        || (a < 0.0 || a > 1.0)) {
+    if (((h < qreal(0.0) || h > qreal(1.0)) && h != qreal(-1.0))
+        || (s < qreal(0.0) || s > qreal(1.0))
+        || (v < qreal(0.0) || v > qreal(1.0))
+        || (a < qreal(0.0) || a > qreal(1.0))) {
         qWarning("QColor::fromHsvF: HSV parameters out of range");
         return QColor();
     }
@@ -2016,7 +2016,7 @@ QColor QColor::fromHsvF(qreal h, qreal s, qreal v, qreal a)
     QColor color;
     color.cspec = Hsv;
     color.ct.ahsv.alpha      = qRound(a * USHRT_MAX);
-    color.ct.ahsv.hue        = h == -1.0 ? USHRT_MAX : qRound(h * 36000);
+    color.ct.ahsv.hue        = h == qreal(-1.0) ? USHRT_MAX : qRound(h * 36000);
     color.ct.ahsv.saturation = qRound(s * USHRT_MAX);
     color.ct.ahsv.value      = qRound(v * USHRT_MAX);
     color.ct.ahsv.pad        = 0;
@@ -2069,10 +2069,10 @@ QColor QColor::fromHsl(int h, int s, int l, int a)
 */
 QColor QColor::fromHslF(qreal h, qreal s, qreal l, qreal a)
 {
-    if (((h < 0.0 || h > 1.0) && h != -1.0)
-        || (s < 0.0 || s > 1.0)
-        || (l < 0.0 || l > 1.0)
-        || (a < 0.0 || a > 1.0)) {
+    if (((h < qreal(0.0) || h > qreal(1.0)) && h != qreal(-1.0))
+        || (s < qreal(0.0) || s > qreal(1.0))
+        || (l < qreal(0.0) || l > qreal(1.0))
+        || (a < qreal(0.0) || a > qreal(1.0))) {
         qWarning("QColor::fromHsvF: HSV parameters out of range");
         return QColor();
     }
@@ -2080,7 +2080,7 @@ QColor QColor::fromHslF(qreal h, qreal s, qreal l, qreal a)
     QColor color;
     color.cspec = Hsl;
     color.ct.ahsl.alpha      = qRound(a * USHRT_MAX);
-    color.ct.ahsl.hue        = (h == -1.0) ? USHRT_MAX : qRound(h * 36000);
+    color.ct.ahsl.hue        = (h == qreal(-1.0)) ? USHRT_MAX : qRound(h * 36000);
     if (color.ct.ahsl.hue == 36000)
         color.ct.ahsl.hue = 0;
     color.ct.ahsl.saturation = qRound(s * USHRT_MAX);
@@ -2189,11 +2189,11 @@ void QColor::setCmyk(int c, int m, int y, int k, int a)
 */
 void QColor::setCmykF(qreal c, qreal m, qreal y, qreal k, qreal a)
 {
-    if (c < 0.0 || c > 1.0
-        || m < 0.0 || m > 1.0
-        || y < 0.0 || y > 1.0
-        || k < 0.0 || k > 1.0
-        || a < 0.0 || a > 1.0) {
+    if (c < qreal(0.0) || c > qreal(1.0)
+        || m < qreal(0.0) || m > qreal(1.0)
+        || y < qreal(0.0) || y > qreal(1.0)
+        || k < qreal(0.0) || k > qreal(1.0)
+        || a < qreal(0.0) || a > qreal(1.0)) {
         qWarning("QColor::setCmykF: CMYK parameters out of range");
         return;
     }
@@ -2251,11 +2251,11 @@ QColor QColor::fromCmyk(int c, int m, int y, int k, int a)
 */
 QColor QColor::fromCmykF(qreal c, qreal m, qreal y, qreal k, qreal a)
 {
-    if (c < 0.0 || c > 1.0
-        || m < 0.0 || m > 1.0
-        || y < 0.0 || y > 1.0
-        || k < 0.0 || k > 1.0
-        || a < 0.0 || a > 1.0) {
+    if (c < qreal(0.0) || c > qreal(1.0)
+        || m < qreal(0.0) || m > qreal(1.0)
+        || y < qreal(0.0) || y > qreal(1.0)
+        || k < qreal(0.0) || k > qreal(1.0)
+        || a < qreal(0.0) || a > qreal(1.0)) {
         qWarning("QColor::fromCmykF: CMYK parameters out of range");
         return QColor();
     }
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index 5904296..5e75e4a 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -570,8 +570,8 @@ const uint * QT_FASTCALL fetchTransformed(uint *buffer, const Operator *, const
     int image_width = data->texture.width;
     int image_height = data->texture.height;
 
-    const qreal cx = x + 0.5;
-    const qreal cy = y + 0.5;
+    const qreal cx = x + qreal(0.5);
+    const qreal cy = y + qreal(0.5);
 
     const uint *end = buffer + length;
     uint *b = buffer;
@@ -792,8 +792,8 @@ const uint * QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Operator *
     int image_x2 = data->texture.x2 - 1;
     int image_y2 = data->texture.y2 - 1;
 
-    const qreal cx = x + 0.5;
-    const qreal cy = y + 0.5;
+    const qreal cx = x + qreal(0.5);
+    const qreal cy = y + qreal(0.5);
 
     uint *end = buffer + length;
     uint *b = buffer;
@@ -1188,8 +1188,8 @@ const uint * QT_FASTCALL fetchTransformedBilinear(uint *buffer, const Operator *
 
         while (b < end) {
             const qreal iw = fw == 0 ? 1 : 1 / fw;
-            const qreal px = fx * iw - 0.5;
-            const qreal py = fy * iw - 0.5;
+            const qreal px = fx * iw - qreal(0.5);
+            const qreal py = fy * iw - qreal(0.5);
 
             int x1 = int(px) - (px < 0);
             int x2;
@@ -1349,7 +1349,7 @@ static const SourceFetchProc sourceFetch[NBlendTypes][QImage::NImageFormats] = {
 
 static inline uint qt_gradient_pixel(const QGradientData *data, qreal pos)
 {
-    int ipos = int(pos * (GRADIENT_STOPTABLE_SIZE - 1) + 0.5);
+    int ipos = int(pos * (GRADIENT_STOPTABLE_SIZE - 1) + qreal(0.5));
 
   // calculate the actual offset.
     if (ipos < 0 || ipos >= GRADIENT_STOPTABLE_SIZE) {
@@ -1430,8 +1430,8 @@ static const uint * QT_FASTCALL fetchLinearGradient(uint *buffer, const Operator
     if (op->linear.l == 0) {
         t = inc = 0;
     } else {
-        rx = data->m21 * (y + 0.5) + data->m11 * (x + 0.5) + data->dx;
-        ry = data->m22 * (y + 0.5) + data->m12 * (x + 0.5) + data->dy;
+        rx = data->m21 * (y + qreal(0.5)) + data->m11 * (x + qreal(0.5)) + data->dx;
+        ry = data->m22 * (y + qreal(0.5)) + data->m12 * (x + qreal(0.5)) + data->dy;
         t = op->linear.dx*rx + op->linear.dy*ry + op->linear.off;
         inc = op->linear.dx * data->m11 + op->linear.dy * data->m12;
         affine = !data->m13 && !data->m23;
@@ -1444,7 +1444,7 @@ static const uint * QT_FASTCALL fetchLinearGradient(uint *buffer, const Operator
 
     const uint *end = buffer + length;
     if (affine) {
-        if (inc > -1e-5 && inc < 1e-5) {
+        if (inc > qreal(-1e-5) && inc < qreal(1e-5)) {
             QT_MEMFILL_UINT(buffer, length, qt_gradient_pixel_fixed(&data->gradient, int(t * FIXPT_SIZE)));
         } else {
             if (t+inc*length < qreal(INT_MAX >> (FIXPT_BITS + 1)) &&
@@ -1467,7 +1467,7 @@ static const uint * QT_FASTCALL fetchLinearGradient(uint *buffer, const Operator
             }
         }
     } else { // fall back to float math here as well
-        qreal rw = data->m23 * (y + 0.5) + data->m13 * (x + 0.5) + data->m33;
+        qreal rw = data->m23 * (y + qreal(0.5)) + data->m13 * (x + qreal(0.5)) + data->m33;
         while (buffer < end) {
             qreal x = rx/rw;
             qreal y = ry/rw;
@@ -1514,10 +1514,10 @@ static const uint * QT_FASTCALL fetchRadialGradient(uint *buffer, const Operator
                                                     int y, int x, int length)
 {
     const uint *b = buffer;
-    qreal rx = data->m21 * (y + 0.5)
-               + data->dx + data->m11 * (x + 0.5);
-    qreal ry = data->m22 * (y + 0.5)
-               + data->dy + data->m12 * (x + 0.5);
+    qreal rx = data->m21 * (y + qreal(0.5))
+               + data->dx + data->m11 * (x + qreal(0.5));
+    qreal ry = data->m22 * (y + qreal(0.5))
+               + data->dy + data->m12 * (x + qreal(0.5));
     bool affine = !data->m13 && !data->m23;
     //qreal r  = data->gradient.radial.radius;
 
@@ -1563,8 +1563,8 @@ static const uint * QT_FASTCALL fetchRadialGradient(uint *buffer, const Operator
             ++buffer;
         }
     } else {
-        qreal rw = data->m23 * (y + 0.5)
-                   + data->m33 + data->m13 * (x + 0.5);
+        qreal rw = data->m23 * (y + qreal(0.5))
+                   + data->m33 + data->m13 * (x + qreal(0.5));
         if (!rw)
             rw = 1;
         while (buffer < end) {
@@ -1593,10 +1593,10 @@ static const uint * QT_FASTCALL fetchConicalGradient(uint *buffer, const Operato
                                                      int y, int x, int length)
 {
     const uint *b = buffer;
-    qreal rx = data->m21 * (y + 0.5)
-               + data->dx + data->m11 * (x + 0.5);
-    qreal ry = data->m22 * (y + 0.5)
-               + data->dy + data->m12 * (x + 0.5);
+    qreal rx = data->m21 * (y + qreal(0.5))
+               + data->dx + data->m11 * (x + qreal(0.5));
+    qreal ry = data->m22 * (y + qreal(0.5))
+               + data->dy + data->m12 * (x + qreal(0.5));
     bool affine = !data->m13 && !data->m23;
 
     const uint *end = buffer + length;
@@ -1613,8 +1613,8 @@ static const uint * QT_FASTCALL fetchConicalGradient(uint *buffer, const Operato
             ++buffer;
         }
     } else {
-        qreal rw = data->m23 * (y + 0.5)
-                   + data->m33 + data->m13 * (x + 0.5);
+        qreal rw = data->m23 * (y + qreal(0.5))
+                   + data->m33 + data->m13 * (x + qreal(0.5));
         if (!rw)
             rw = 1;
         while (buffer < end) {
@@ -2819,7 +2819,7 @@ static inline int soft_light_op(int dst, int src, int da, int sa)
 #   ifdef Q_CC_RVCT // needed to avoid compiler crash in RVCT 2.2
         return (dst * sa * 255 + da * (src2 - sa) * (qIntSqrtInt(dst_np * 255) - dst_np) + temp) / 65025;
 #   else
-        return (dst * sa * 255 + da * (src2 - sa) * (int(sqrt(qreal(dst_np * 255))) - dst_np) + temp) / 65025;
+        return (dst * sa * 255 + da * (src2 - sa) * (int(qSqrt(qreal(dst_np * 255))) - dst_np) + temp) / 65025;
 #   endif
     }
 }
@@ -5928,8 +5928,8 @@ Q_STATIC_TEMPLATE_FUNCTION void blend_transformed_argb(int count, const QSpan *s
             uint *target = ((uint *)t) + spans->x;
             uint *image_bits = (uint *)data->texture.imageData;
 
-            const qreal cx = spans->x + 0.5;
-            const qreal cy = spans->y + 0.5;
+            const qreal cx = spans->x + qreal(0.5);
+            const qreal cy = spans->y + qreal(0.5);
 
             int x = int((data->m21 * cy
                          + data->m11 * cx + data->dx) * fixed_scale);
@@ -5976,8 +5976,8 @@ Q_STATIC_TEMPLATE_FUNCTION void blend_transformed_argb(int count, const QSpan *s
             uint *target = ((uint *)t) + spans->x;
             uint *image_bits = (uint *)data->texture.imageData;
 
-            const qreal cx = spans->x + 0.5;
-            const qreal cy = spans->y + 0.5;
+            const qreal cx = spans->x + qreal(0.5);
+            const qreal cy = spans->y + qreal(0.5);
 
             qreal x = data->m21 * cy + data->m11 * cx + data->dx;
             qreal y = data->m22 * cy + data->m12 * cx + data->dy;
@@ -6328,8 +6328,8 @@ Q_STATIC_TEMPLATE_FUNCTION void blend_transformed_tiled_argb(int count, const QS
             uint *target = ((uint *)t) + spans->x;
             uint *image_bits = (uint *)data->texture.imageData;
 
-            const qreal cx = spans->x + 0.5;
-            const qreal cy = spans->y + 0.5;
+            const qreal cx = spans->x + qreal(0.5);
+            const qreal cy = spans->y + qreal(0.5);
 
             int x = int((data->m21 * cy
                          + data->m11 * cx + data->dx) * fixed_scale);
@@ -6380,8 +6380,8 @@ Q_STATIC_TEMPLATE_FUNCTION void blend_transformed_tiled_argb(int count, const QS
             uint *target = ((uint *)t) + spans->x;
             uint *image_bits = (uint *)data->texture.imageData;
 
-            const qreal cx = spans->x + 0.5;
-            const qreal cy = spans->y + 0.5;
+            const qreal cx = spans->x + qreal(0.5);
+            const qreal cy = spans->y + qreal(0.5);
 
             qreal x = data->m21 * cy + data->m11 * cx + data->dx;
             qreal y = data->m22 * cy + data->m12 * cx + data->dy;
@@ -7067,7 +7067,7 @@ static void qt_gradient_quint32(int count, const QSpan *spans, void *userData)
          */
         const int gss = GRADIENT_STOPTABLE_SIZE - 1;
         int yinc = int((linear.dy * data->m22 * gss) * FIXPT_SIZE);
-        int off = int((((linear.dy * (data->m22 * 0.5 + data->dy) + linear.off) * gss) * FIXPT_SIZE));
+        int off = int((((linear.dy * (data->m22 * qreal(0.5) + data->dy) + linear.off) * gss) * FIXPT_SIZE));
 
         while (count--) {
             int y = spans->y;
@@ -7115,7 +7115,7 @@ static void qt_gradient_quint16(int count, const QSpan *spans, void *userData)
          */
         const int gss = GRADIENT_STOPTABLE_SIZE - 1;
         int yinc = int((linear.dy * data->m22 * gss) * FIXPT_SIZE);
-        int off = int((((linear.dy * (data->m22 * 0.5 + data->dy) + linear.off) * gss) * FIXPT_SIZE));
+        int off = int((((linear.dy * (data->m22 * qreal(0.5) + data->dy) + linear.off) * gss) * FIXPT_SIZE));
 
         uint oldColor = data->solid.color;
         while (count--) {
@@ -7194,17 +7194,17 @@ void qt_build_pow_tables() {
 #ifdef Q_WS_MAC
     // decided by testing a few things on an iMac, should probably get this from the
     // system...
-    smoothing = 2.0;
+    smoothing = qreal(2.0);
 #endif
 
 #ifdef Q_WS_WIN
     int winSmooth;
     if (SystemParametersInfo(0x200C /* SPI_GETFONTSMOOTHINGCONTRAST */, 0, &winSmooth, 0))
-        smoothing = winSmooth / 1000.0;
+        smoothing = winSmooth / qreal(1000.0);
 
     // Safeguard ourselves against corrupt registry values...
     if (smoothing > 5 || smoothing < 1)
-        smoothing = 1.4;
+        smoothing = qreal(1.4);
 
 #endif
 
@@ -7226,7 +7226,7 @@ void qt_build_pow_tables() {
     for (int i=0; i<256; ++i)
         qt_pow_gamma[i] = uint(qRound(qPow(i / qreal(255.), gray_gamma) * 2047));
     for (int i=0; i<2048; ++i)
-        qt_pow_invgamma[i] = uchar(qRound(qPow(i / 2047.0, 1 / gray_gamma) * 255));
+        qt_pow_invgamma[i] = uchar(qRound(qPow(i / qreal(2047.0), 1 / gray_gamma) * 255));
 #endif
 }
 
diff --git a/src/gui/painting/qdrawhelper_neon.cpp b/src/gui/painting/qdrawhelper_neon.cpp
index 00b103d..debca37 100644
--- a/src/gui/painting/qdrawhelper_neon.cpp
+++ b/src/gui/painting/qdrawhelper_neon.cpp
@@ -327,10 +327,8 @@ void qt_blend_argb32_on_rgb16_neon(uchar *destPixels, int dbpl,
 
                 blend_8_pixels_argb32_on_rgb16_neon(dstBuffer, srcBuffer, const_alpha);
 
-                for (int j = 0; j < tail; ++j) {
+                for (int j = 0; j < tail; ++j)
                     dst[i + j] = dstBuffer[j];
-                    src[i + j] = srcBuffer[j];
-                }
             }
 
             dst = (quint16 *)(((uchar *) dst) + dbpl);
diff --git a/src/gui/painting/qgraphicssystem_runtime.cpp b/src/gui/painting/qgraphicssystem_runtime.cpp
index 33652ee..d1dd7ef 100644
--- a/src/gui/painting/qgraphicssystem_runtime.cpp
+++ b/src/gui/painting/qgraphicssystem_runtime.cpp
@@ -319,6 +319,11 @@ QPoint QRuntimeWindowSurface::offset(const QWidget *widget) const
     return m_windowSurface->offset(widget);
 }
 
+QWindowSurface::WindowSurfaceFeatures QRuntimeWindowSurface::features() const
+{
+    return m_windowSurface->features();
+}
+
 QRuntimeGraphicsSystem::QRuntimeGraphicsSystem()
     : m_windowSurfaceDestroyPolicy(DestroyImmediately),
       m_graphicsSystem(0)
diff --git a/src/gui/painting/qgraphicssystem_runtime_p.h b/src/gui/painting/qgraphicssystem_runtime_p.h
index 30b4e3e..26d3777 100644
--- a/src/gui/painting/qgraphicssystem_runtime_p.h
+++ b/src/gui/painting/qgraphicssystem_runtime_p.h
@@ -129,6 +129,8 @@ public:
 
     virtual QPoint offset(const QWidget *widget) const;
 
+    virtual WindowSurfaceFeatures features() const;
+
     QScopedPointer<QWindowSurface> m_windowSurface;
     QScopedPointer<QWindowSurface> m_pendingWindowSurface;
 
diff --git a/src/gui/painting/qgraphicssystemfactory.cpp b/src/gui/painting/qgraphicssystemfactory.cpp
index 5605fc1..62a60d7 100644
--- a/src/gui/painting/qgraphicssystemfactory.cpp
+++ b/src/gui/painting/qgraphicssystemfactory.cpp
@@ -45,6 +45,7 @@
 #include "qmutex.h"
 
 #include "qapplication.h"
+#include <private/qapplication_p.h>
 #include "qgraphicssystem_raster_p.h"
 #include "qgraphicssystem_runtime_p.h"
 #include "qdebug.h"
@@ -79,6 +80,7 @@ QGraphicsSystem *QGraphicsSystemFactory::create(const QString& key)
     }
 #endif
 
+    QApplicationPrivate::graphics_system_name = system;
     if (system == QLatin1String("raster"))
         return new QRasterGraphicsSystem;
     else if (system == QLatin1String("runtime"))
diff --git a/src/gui/painting/qpaintbuffer.cpp b/src/gui/painting/qpaintbuffer.cpp
index fac356c..dd4b3db 100644
--- a/src/gui/painting/qpaintbuffer.cpp
+++ b/src/gui/painting/qpaintbuffer.cpp
@@ -54,8 +54,6 @@
 
 QT_BEGIN_NAMESPACE
 
-Q_GUI_EXPORT extern int qt_defaultDpiX();
-Q_GUI_EXPORT extern int qt_defaultDpiY();
 extern void qt_format_text(const QFont &font,
                            const QRectF &_r, int tf, const QTextOption *option, const QString& str, QRectF *brect,
                            int tabstops, int* tabarray, int tabarraylen,
diff --git a/src/gui/painting/qpaintengine_alpha.cpp b/src/gui/painting/qpaintengine_alpha.cpp
index 339a002..171850d 100644
--- a/src/gui/painting/qpaintengine_alpha.cpp
+++ b/src/gui/painting/qpaintengine_alpha.cpp
@@ -46,6 +46,7 @@
 #include "private/qpaintengine_alpha_p.h"
 
 #include "private/qpicture_p.h"
+#include "private/qfont_p.h"
 #include "QtGui/qpicture.h"
 
 QT_BEGIN_NAMESPACE
@@ -93,9 +94,6 @@ bool QAlphaPaintEngine::begin(QPaintDevice *pdev)
     return true;
 }
 
-Q_GUI_EXPORT extern int qt_defaultDpiX();
-Q_GUI_EXPORT extern int qt_defaultDpiY();
-
 bool QAlphaPaintEngine::end()
 {
     Q_D(QAlphaPaintEngine);
diff --git a/src/gui/painting/qpaintengine_mac.cpp b/src/gui/painting/qpaintengine_mac.cpp
index 2f35dcd..8aab7c7 100644
--- a/src/gui/painting/qpaintengine_mac.cpp
+++ b/src/gui/painting/qpaintengine_mac.cpp
@@ -972,7 +972,7 @@ void QCoreGraphicsPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, co
         return;
 
     bool differentSize = (QRectF(0, 0, pm.width(), pm.height()) != sr), doRestore = false;
-    CGRect rect = CGRectMake(qRound(r.x()), qRound(r.y()), qRound(r.width()), qRound(r.height()));
+    CGRect rect = CGRectMake(r.x(), r.y(), r.width(), r.height());
     QCFType<CGImageRef> image;
     bool isBitmap = (pm.depth() == 1);
     if (isBitmap) {
diff --git a/src/gui/painting/qpaintengine_mac_p.h b/src/gui/painting/qpaintengine_mac_p.h
index 5c459ee..3e71d6c 100644
--- a/src/gui/painting/qpaintengine_mac_p.h
+++ b/src/gui/painting/qpaintengine_mac_p.h
@@ -57,15 +57,12 @@
 #include "private/qt_mac_p.h"
 #include "private/qpaintengine_p.h"
 #include "private/qpolygonclipper_p.h"
+#include "private/qfont_p.h"
 #include "QtCore/qhash.h"
 
 typedef struct CGColorSpace *CGColorSpaceRef;
 QT_BEGIN_NAMESPACE
 
-extern int qt_defaultDpi();
-extern int qt_defaultDpiX();
-extern int qt_defaultDpiY();
-
 class QCoreGraphicsPaintEnginePrivate;
 class QCoreGraphicsPaintEngine : public QPaintEngine
 {
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 9242fb6..6902543 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -3076,65 +3076,145 @@ void QRasterPaintEngine::alphaPenBlt(const void* src, int bpl, int depth, int rx
         blend(current, spans, &s->penData);
 }
 
-void QRasterPaintEngine::drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs,
+bool QRasterPaintEngine::drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs,
                                           const QFixedPoint *positions, QFontEngine *fontEngine)
 {
     Q_D(QRasterPaintEngine);
     QRasterPaintEngineState *s = state();
 
-    QFontEngineGlyphCache::Type glyphType = fontEngine->glyphFormat >= 0 ? QFontEngineGlyphCache::Type(fontEngine->glyphFormat) : d->glyphCacheType;
+#if !defined(QT_NO_FREETYPE)
+    if (fontEngine->type() == QFontEngine::Freetype) {
+        QFontEngineFT *fe = static_cast<QFontEngineFT *>(fontEngine);
+        QFontEngineFT::GlyphFormat neededFormat =
+            painter()->device()->devType() == QInternal::Widget
+            ? fe->defaultGlyphFormat()
+            : QFontEngineFT::Format_A8;
+
+        if (d_func()->mono_surface
+            || fe->isBitmapFont() // alphaPenBlt can handle mono, too
+            )
+            neededFormat = QFontEngineFT::Format_Mono;
+
+        if (neededFormat == QFontEngineFT::Format_None)
+            neededFormat = QFontEngineFT::Format_A8;
+
+        QFontEngineFT::QGlyphSet *gset = fe->defaultGlyphs();
+        if (s->matrix.type() >= QTransform::TxScale) {
+            if (s->matrix.isAffine())
+                gset = fe->loadTransformedGlyphSet(s->matrix);
+            else
+                gset = 0;
+        }
 
-    QImageTextureGlyphCache *cache =
-        static_cast<QImageTextureGlyphCache *>(fontEngine->glyphCache(0, glyphType, s->matrix));
-    if (!cache) {
-        cache = new QImageTextureGlyphCache(glyphType, s->matrix);
-        fontEngine->setGlyphCache(0, cache);
-    }
+        if (!gset || gset->outline_drawing
+            || !fe->loadGlyphs(gset, glyphs, numGlyphs, positions, neededFormat))
+            return false;
 
-    cache->populate(fontEngine, numGlyphs, glyphs, positions);
-    cache->fillInPendingGlyphs();
+        FT_Face lockedFace = 0;
 
-    const QImage &image = cache->image();
-    int bpl = image.bytesPerLine();
+        int depth;
+        switch (neededFormat) {
+        case QFontEngineFT::Format_Mono:
+            depth = 1;
+            break;
+        case QFontEngineFT::Format_A8:
+            depth = 8;
+            break;
+        case QFontEngineFT::Format_A32:
+            depth = 32;
+            break;
+        default:
+            Q_ASSERT(false);
+            depth = 0;
+        };
 
-    int depth = image.depth();
-    int rightShift = 0;
-    int leftShift = 0;
-    if (depth == 32)
-        leftShift = 2; // multiply by 4
-    else if (depth == 1)
-        rightShift = 3; // divide by 8
+        for (int i = 0; i < numGlyphs; i++) {
+            QFixed spp = fe->subPixelPositionForX(positions[i].x);
+            QFontEngineFT::Glyph *glyph = gset->getGlyph(glyphs[i], spp);
 
-    int margin = cache->glyphMargin();
+            if (!glyph || glyph->format != neededFormat) {
+                if (!lockedFace)
+                    lockedFace = fe->lockFace();
+                glyph = fe->loadGlyph(gset, glyphs[i], spp, neededFormat);
+            }
 
-    bool supportsSubPixelPositions = fontEngine->supportsSubPixelPositions();
+            if (!glyph || !glyph->data)
+                continue;
 
-    const uchar *bits = image.bits();
-    for (int i=0; i<numGlyphs; ++i) {
+            int pitch;
+            switch (neededFormat) {
+            case QFontEngineFT::Format_Mono:
+                pitch = ((glyph->width + 31) & ~31) >> 3;
+                break;
+            case QFontEngineFT::Format_A8:
+                pitch = (glyph->width + 3) & ~3;
+                break;
+            case QFontEngineFT::Format_A32:
+                pitch = glyph->width * 4;
+                break;
+            default:
+                Q_ASSERT(false);
+                pitch = 0;
+            };
+
+            alphaPenBlt(glyph->data, pitch, depth,
+                        qFloor(positions[i].x) + glyph->x,
+                        qFloor(positions[i].y) - glyph->y,
+                        glyph->width, glyph->height);
+        }
+        if (lockedFace)
+            fe->unlockFace();
+    } else
+#endif
+    {
+        QFontEngineGlyphCache::Type glyphType = fontEngine->glyphFormat >= 0 ? QFontEngineGlyphCache::Type(fontEngine->glyphFormat) : d->glyphCacheType;
 
-        QFixed subPixelPosition;
-        if (supportsSubPixelPositions)
-            subPixelPosition = cache->subPixelPositionForX(positions[i].x);
-        QTextureGlyphCache::GlyphAndSubPixelPosition glyph(glyphs[i], subPixelPosition);
-        const QTextureGlyphCache::Coord &c = cache->coords[glyph];
-        if (c.isNull())
-            continue;
+        QImageTextureGlyphCache *cache =
+            static_cast<QImageTextureGlyphCache *>(fontEngine->glyphCache(0, glyphType, s->matrix));
+        if (!cache) {
+            cache = new QImageTextureGlyphCache(glyphType, s->matrix);
+            fontEngine->setGlyphCache(0, cache);
+        }
 
-        int x = qFloor(positions[i].x) + c.baseLineX - margin;
-        int y = qFloor(positions[i].y) - c.baseLineY - margin;
+        cache->populate(fontEngine, numGlyphs, glyphs, positions);
+        cache->fillInPendingGlyphs();
 
-//         printf("drawing [%d %d %d %d] baseline [%d %d], glyph: %d, to: %d %d, pos: %d %d\n",
-//                c.x, c.y,
-//                c.w, c.h,
-//                c.baseLineX, c.baseLineY,
-//                glyphs[i],
-//                x, y,
-//                positions[i].x.toInt(), positions[i].y.toInt());
+        const QImage &image = cache->image();
+        int bpl = image.bytesPerLine();
 
-        alphaPenBlt(bits + ((c.x << leftShift) >> rightShift) + c.y * bpl, bpl, depth, x, y, c.w, c.h);
-    }
+        int depth = image.depth();
+        int rightShift = 0;
+        int leftShift = 0;
+        if (depth == 32)
+            leftShift = 2; // multiply by 4
+        else if (depth == 1)
+            rightShift = 3; // divide by 8
 
-    return;
+        int margin = cache->glyphMargin();
+        const uchar *bits = image.bits();
+        for (int i=0; i<numGlyphs; ++i) {
+
+            QFixed subPixelPosition = cache->subPixelPositionForX(positions[i].x);
+            QTextureGlyphCache::GlyphAndSubPixelPosition glyph(glyphs[i], subPixelPosition);
+            const QTextureGlyphCache::Coord &c = cache->coords[glyph];
+            if (c.isNull())
+                continue;
+
+            int x = qFloor(positions[i].x) + c.baseLineX - margin;
+            int y = qFloor(positions[i].y) - c.baseLineY - margin;
+
+            // printf("drawing [%d %d %d %d] baseline [%d %d], glyph: %d, to: %d %d, pos: %d %d\n",
+            //        c.x, c.y,
+            //        c.w, c.h,
+            //        c.baseLineX, c.baseLineY,
+            //        glyphs[i],
+            //        x, y,
+            //        positions[i].x.toInt(), positions[i].y.toInt());
+
+            alphaPenBlt(bits + ((c.x << leftShift) >> rightShift) + c.y * bpl, bpl, depth, x, y, c.w, c.h);
+        }
+    }
+    return true;
 }
 
 #if defined(Q_OS_SYMBIAN) && defined(QT_NO_FREETYPE)
@@ -3445,91 +3525,10 @@ void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte
     if (glyphs.size() == 0)
         return;
 
-    // only use subpixel antialiasing when drawing to widgets
-    QFontEngineFT::GlyphFormat neededFormat =
-        painter()->device()->devType() == QInternal::Widget
-        ? fe->defaultGlyphFormat()
-        : QFontEngineFT::Format_A8;
-
-    if (d_func()->mono_surface
-        || fe->isBitmapFont() // alphaPenBlt can handle mono, too
-        )
-        neededFormat = QFontEngineFT::Format_Mono;
-
-    if (neededFormat == QFontEngineFT::Format_None)
-        neededFormat = QFontEngineFT::Format_A8;
-
-    QFontEngineFT::QGlyphSet *gset = fe->defaultGlyphs();
-    if (s->matrix.type() >= QTransform::TxScale) {
-        if (s->matrix.isAffine())
-            gset = fe->loadTransformedGlyphSet(s->matrix);
-        else
-            gset = 0;
-
-    }
-
-    if (!gset || gset->outline_drawing
-        || !fe->loadGlyphs(gset, glyphs.data(), glyphs.size(), neededFormat))
-    {
+    if (!drawCachedGlyphs(glyphs.size(), glyphs.constData(), positions.constData(), fontEngine))
         QPaintEngine::drawTextItem(p, ti);
-        return;
-    }
-
-    FT_Face lockedFace = 0;
-
-    int depth;
-    switch (neededFormat) {
-    case QFontEngineFT::Format_Mono:
-        depth = 1;
-        break;
-    case QFontEngineFT::Format_A8:
-        depth = 8;
-        break;
-    case QFontEngineFT::Format_A32:
-        depth = 32;
-        break;
-    default:
-        Q_ASSERT(false);
-        depth = 0;
-    };
-
-    for(int i = 0; i < glyphs.size(); i++) {
-        QFontEngineFT::Glyph *glyph = gset->getGlyph(glyphs[i]);
 
-        if (!glyph || glyph->format != neededFormat) {
-            if (!lockedFace)
-                lockedFace = fe->lockFace();
-            glyph = fe->loadGlyph(gset, glyphs[i], neededFormat);
-        }
-
-        if (!glyph || !glyph->data)
-            continue;
-
-        int pitch;
-        switch (neededFormat) {
-        case QFontEngineFT::Format_Mono:
-            pitch = ((glyph->width + 31) & ~31) >> 3;
-            break;
-        case QFontEngineFT::Format_A8:
-            pitch = (glyph->width + 3) & ~3;
-            break;
-        case QFontEngineFT::Format_A32:
-            pitch = glyph->width * 4;
-            break;
-        default:
-            Q_ASSERT(false);
-            pitch = 0;
-        };
-
-        alphaPenBlt(glyph->data, pitch, depth,
-                    qFloor(positions[i].x) + glyph->x,
-                    qFloor(positions[i].y) - glyph->y,
-                    glyph->width, glyph->height);
-    }
-    if (lockedFace)
-        fe->unlockFace();
     return;
-
 #endif
 #endif
 
diff --git a/src/gui/painting/qpaintengine_raster_p.h b/src/gui/painting/qpaintengine_raster_p.h
index 7f902a8..52f51fa 100644
--- a/src/gui/painting/qpaintengine_raster_p.h
+++ b/src/gui/painting/qpaintengine_raster_p.h
@@ -261,7 +261,7 @@ private:
     void fillRect(const QRectF &rect, QSpanData *data);
     void drawBitmap(const QPointF &pos, const QImage &image, QSpanData *fill);
 
-    void drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs, const QFixedPoint *positions,
+    bool drawCachedGlyphs(int numGlyphs, const glyph_t *glyphs, const QFixedPoint *positions,
                           QFontEngine *fontEngine);
 
 #if defined(Q_OS_SYMBIAN) && defined(QT_NO_FREETYPE)
diff --git a/src/gui/painting/qpaintengine_x11.cpp b/src/gui/painting/qpaintengine_x11.cpp
index 8b71b83..94828fb 100644
--- a/src/gui/painting/qpaintengine_x11.cpp
+++ b/src/gui/painting/qpaintengine_x11.cpp
@@ -2385,7 +2385,7 @@ void QX11PaintEngine::drawFreetype(const QPointF &p, const QTextItemInt &ti)
         set = ft->loadTransformedGlyphSet(d->matrix);
 
     if (!set || set->outline_drawing
-        || !ft->loadGlyphs(set, glyphs.data(), glyphs.size(), QFontEngineFT::Format_Render))
+        || !ft->loadGlyphs(set, glyphs.constData(), glyphs.size(), positions.constData(), QFontEngineFT::Format_Render))
     {
         QPaintEngine::drawTextItem(p, ti);
         return;
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index 2c25e70..50d65e6 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -6463,12 +6463,13 @@ static void drawTextItemDecoration(QPainter *painter, const QPointF &pos, const
     pen.setWidthF(fe->lineThickness().toReal());
     pen.setCapStyle(Qt::FlatCap);
 
-    QLineF line(pos.x(), pos.y(), pos.x() + width, pos.y());
+    QLineF line(pos.x(), pos.y(), pos.x() + qFloor(width), pos.y());
 
     const qreal underlineOffset = fe->underlinePosition().toReal();
     // deliberately ceil the offset to avoid the underline coming too close to
     // the text above it.
-    const qreal underlinePos = pos.y() + qCeil(underlineOffset);
+    const qreal aliasedCoordinateDelta = 0.5 - 0.015625;
+    const qreal underlinePos = pos.y() + qCeil(underlineOffset) - aliasedCoordinateDelta;
 
     if (underlineStyle == QTextCharFormat::SpellCheckUnderline) {
         underlineStyle = QTextCharFormat::UnderlineStyle(QApplication::style()->styleHint(QStyle::SH_SpellCheckUnderlineStyle));
@@ -8246,12 +8247,16 @@ start_lengthVariant:
             QTextLine line = textLayout.lineAt(i);
 
             qreal advance = line.horizontalAdvance();
-            if (tf & Qt::AlignRight)
-                xoff = r.width() - advance;
+            xoff = 0;
+            if (tf & Qt::AlignRight) {
+                QTextEngine *eng = textLayout.engine();
+                xoff = r.width() - advance -
+                    eng->leadingSpaceWidth(eng->lines[line.lineNumber()]).toReal();
+            }
             else if (tf & Qt::AlignHCenter)
-                xoff = (r.width() - advance)/2;
+                xoff = (r.width() - advance) / 2;
 
-            line.draw(painter, QPointF(r.x() + xoff + line.x(), r.y() + yoff));
+            line.draw(painter, QPointF(r.x() + xoff, r.y() + yoff));
         }
 
         if (restore) {
diff --git a/src/gui/painting/qpainterpath.cpp b/src/gui/painting/qpainterpath.cpp
index 49f1a5f..27aed32 100644
--- a/src/gui/painting/qpainterpath.cpp
+++ b/src/gui/painting/qpainterpath.cpp
@@ -1897,39 +1897,39 @@ static bool qt_painterpath_isect_line_rect(qreal x1, qreal y1, qreal x2, qreal y
     return false;
 }
 
-static bool qt_isect_curve_horizontal(const QBezier &bezier, qreal y, qreal x1, qreal x2)
+static bool qt_isect_curve_horizontal(const QBezier &bezier, qreal y, qreal x1, qreal x2, int depth = 0)
 {
     QRectF bounds = bezier.bounds();
 
     if (y >= bounds.top() && y < bounds.bottom()
         && bounds.right() >= x1 && bounds.left() < x2) {
         const qreal lower_bound = qreal(.01);
-        if (bounds.width() < lower_bound && bounds.height() < lower_bound)
+        if (depth == 32 || (bounds.width() < lower_bound && bounds.height() < lower_bound))
             return true;
 
         QBezier first_half, second_half;
         bezier.split(&first_half, &second_half);
-        if (qt_isect_curve_horizontal(first_half, y, x1, x2)
-            || qt_isect_curve_horizontal(second_half, y, x1, x2))
+        if (qt_isect_curve_horizontal(first_half, y, x1, x2, depth + 1)
+            || qt_isect_curve_horizontal(second_half, y, x1, x2, depth + 1))
             return true;
     }
     return false;
 }
 
-static bool qt_isect_curve_vertical(const QBezier &bezier, qreal x, qreal y1, qreal y2)
+static bool qt_isect_curve_vertical(const QBezier &bezier, qreal x, qreal y1, qreal y2, int depth = 0)
 {
     QRectF bounds = bezier.bounds();
 
     if (x >= bounds.left() && x < bounds.right()
         && bounds.bottom() >= y1 && bounds.top() < y2) {
         const qreal lower_bound = qreal(.01);
-        if (bounds.width() < lower_bound && bounds.height() < lower_bound)
+        if (depth == 32 || (bounds.width() < lower_bound && bounds.height() < lower_bound))
             return true;
 
         QBezier first_half, second_half;
         bezier.split(&first_half, &second_half);
-        if (qt_isect_curve_vertical(first_half, x, y1, y2)
-            || qt_isect_curve_vertical(second_half, x, y1, y2))
+        if (qt_isect_curve_vertical(first_half, x, y1, y2, depth + 1)
+            || qt_isect_curve_vertical(second_half, x, y1, y2, depth + 1))
             return true;
     }
      return false;
diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp
index bc30038..0271a39 100644
--- a/src/gui/painting/qpdf.cpp
+++ b/src/gui/painting/qpdf.cpp
@@ -47,6 +47,7 @@
 #include "private/qcups_p.h"
 #include "qprinterinfo.h"
 #include <qnumeric.h>
+#include "private/qfont_p.h"
 
 #ifdef Q_OS_UNIX
 #include "private/qcore_unix_p.h" // overrides QT_OPEN
@@ -54,8 +55,6 @@
 
 QT_BEGIN_NAMESPACE
 
-Q_GUI_EXPORT extern int qt_defaultDpi();
-
 #ifndef QT_NO_PRINTER
 
 extern QSizeF qt_paperSizeToQSizeF(QPrinter::PaperSize size);
diff --git a/src/gui/painting/qprintengine_mac.mm b/src/gui/painting/qprintengine_mac.mm
index ec842a9..1dce303 100644
--- a/src/gui/painting/qprintengine_mac.mm
+++ b/src/gui/painting/qprintengine_mac.mm
@@ -49,7 +49,6 @@
 QT_BEGIN_NAMESPACE
 
 extern QSizeF qt_paperSizeToQSizeF(QPrinter::PaperSize size);
-extern int qt_defaultDpi();
 
 QMacPrintEngine::QMacPrintEngine(QPrinter::PrinterMode mode) : QPaintEngine(*(new QMacPrintEnginePrivate))
 {
diff --git a/src/gui/painting/qtextureglyphcache.cpp b/src/gui/painting/qtextureglyphcache.cpp
index e75c0f5..53f025f 100644
--- a/src/gui/painting/qtextureglyphcache.cpp
+++ b/src/gui/painting/qtextureglyphcache.cpp
@@ -102,7 +102,7 @@ int QTextureGlyphCache::calculateSubPixelPositionCount(glyph_t glyph) const
 
 QFixed QTextureGlyphCache::subPixelPositionForX(QFixed x) const
 {
-    if (m_subPixelPositionCount == 0)
+    if (m_subPixelPositionCount <= 1)
         return QFixed();
 
     QFixed subPixelPosition;
@@ -134,9 +134,13 @@ bool QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const
         if (!supportsSubPixelPositions) {
             m_subPixelPositionCount = 1;
         } else {
+#if !defined(Q_WS_X11)
             int i = 0;
             while (m_subPixelPositionCount == 0 && i < numGlyphs)
                 m_subPixelPositionCount = calculateSubPixelPositionCount(glyphs[i++]);
+#else
+            m_subPixelPositionCount = 4;
+#endif
         }
     }
 
@@ -164,7 +168,7 @@ bool QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const
             continue;
         if (listItemCoordinates.contains(GlyphAndSubPixelPosition(glyph, subPixelPosition)))
             continue;
-        glyph_metrics_t metrics = fontEngine->alphaMapBoundingBox(glyph, m_transform, format);
+        glyph_metrics_t metrics = fontEngine->alphaMapBoundingBox(glyph, subPixelPosition, m_transform, format);
 
 #ifdef CACHE_DEBUG
         printf("(%4x): w=%.2f, h=%.2f, xoff=%.2f, yoff=%.2f, x=%.2f, y=%.2f\n",
@@ -234,6 +238,11 @@ bool QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const
             }
         }
 
+        if (maxTextureHeight() > 0 && m_cy + c.h > maxTextureHeight()) {
+            // We can't make a cache of the required size, so we bail out
+            return false;
+        }
+
         c.x = m_cx;
         c.y = m_cy;
 
@@ -307,9 +316,11 @@ QImage QTextureGlyphCache::textureMapForGlyph(glyph_t g, QFixed subPixelPosition
 
         QFontEngineFT *ft = static_cast<QFontEngineFT*> (m_current_fontengine);
         QFontEngineFT::QGlyphSet *gset = ft->loadTransformedGlyphSet(m_transform);
+        QFixedPoint positions[1];
+        positions[0].x = subPixelPosition;
 
-        if (gset && ft->loadGlyphs(gset, &g, 1, format)) {
-            QFontEngineFT::Glyph *glyph = gset->getGlyph(g);
+        if (gset && ft->loadGlyphs(gset, &g, 1, positions, format)) {
+            QFontEngineFT::Glyph *glyph = gset->getGlyph(g, subPixelPosition);
             const int bytesPerLine = (format == QFontEngineFT::Format_Mono ? ((glyph->width + 31) & ~31) >> 3
                                : (glyph->width + 3) & ~3);
             return QImage(glyph->data, glyph->width, glyph->height, bytesPerLine, imageFormat);
@@ -356,7 +367,7 @@ void QImageTextureGlyphCache::createTextureData(int width, int height)
 
 int QImageTextureGlyphCache::glyphMargin() const
 {
-#if defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA)
+#if (defined(Q_WS_MAC) && defined(QT_MAC_USE_COCOA)) || defined(Q_WS_X11)
     return 0;
 #else
     return m_type == QFontEngineGlyphCache::Raster_RGBMask ? 2 : 0;
diff --git a/src/gui/painting/qtransform.cpp b/src/gui/painting/qtransform.cpp
index 4441b30..7d11e2f 100644
--- a/src/gui/painting/qtransform.cpp
+++ b/src/gui/painting/qtransform.cpp
@@ -1085,8 +1085,11 @@ QDebug operator<<(QDebug dbg, const QTransform &m)
         "TxNone",
         "TxTranslate",
         "TxScale",
+        0,
         "TxRotate",
+        0, 0, 0,
         "TxShear",
+        0, 0, 0, 0, 0, 0, 0,
         "TxProject"
     };
 
diff --git a/src/gui/painting/qunifiedtoolbarsurface_mac.cpp b/src/gui/painting/qunifiedtoolbarsurface_mac.cpp
index e7434c7..3876c3d 100644
--- a/src/gui/painting/qunifiedtoolbarsurface_mac.cpp
+++ b/src/gui/painting/qunifiedtoolbarsurface_mac.cpp
@@ -55,7 +55,6 @@ QUnifiedToolbarSurface::QUnifiedToolbarSurface(QWidget *widget)
 {
     d_ptr->image = 0;
     d_ptr->inSetGeometry = false;
-    setStaticContentsSupport(true);
 
     setGeometry(QRect(QPoint(0, 0), QSize(widget->width(), 100))); // FIXME: Fix height.
 }
@@ -71,7 +70,7 @@ QPaintDevice *QUnifiedToolbarSurface::paintDevice()
     return &d_ptr->image->image;
 }
 
-void QUnifiedToolbarSurface::recursiveRedirect(QObject *object, const QPoint &offset)
+void QUnifiedToolbarSurface::recursiveRedirect(QObject *object, QWidget *parent_toolbar, const QPoint &offset)
 {
     if (object != 0) {
         if (object->isWidgetType()) {
@@ -83,9 +82,10 @@ void QUnifiedToolbarSurface::recursiveRedirect(QObject *object, const QPoint &of
                 widget->d_func()->unifiedSurface = this;
                 widget->d_func()->isInUnifiedToolbar = true;
                 widget->d_func()->toolbar_offset = offset;
+                widget->d_func()->toolbar_ancestor = parent_toolbar;
 
                 for (int i = 0; i < object->children().size(); ++i) {
-                    recursiveRedirect(object->children().at(i), offset);
+                    recursiveRedirect(object->children().at(i), parent_toolbar, offset);
                 }
             }
         }
@@ -95,7 +95,35 @@ void QUnifiedToolbarSurface::recursiveRedirect(QObject *object, const QPoint &of
 void QUnifiedToolbarSurface::insertToolbar(QWidget *toolbar, const QPoint &offset)
 {
     setGeometry(QRect(QPoint(0, 0), QSize(offset.x() + toolbar->width(), 100))); // FIXME
-    recursiveRedirect(toolbar, offset);
+    recursiveRedirect(toolbar, toolbar, offset);
+}
+
+// We basically undo what we set in recursiveRedirect().
+void QUnifiedToolbarSurface::recursiveRemoval(QObject *object)
+{
+    if (object != 0) {
+        if (object->isWidgetType()) {
+            QWidget *widget = qobject_cast<QWidget *>(object);
+
+            // If it's a pop-up or something similar, we don't redirect it.
+            if (widget->windowType() & Qt::Window)
+                return;
+
+            widget->d_func()->unifiedSurface = 0;
+            widget->d_func()->isInUnifiedToolbar = false;
+            widget->d_func()->toolbar_offset = QPoint();
+            widget->d_func()->toolbar_ancestor = 0;
+        }
+
+        for (int i = 0; i < object->children().size(); ++i) {
+            recursiveRemoval(object->children().at(i));
+        }
+    }
+}
+
+void QUnifiedToolbarSurface::removeToolbar(QToolBar *toolbar)
+{
+    recursiveRemoval(toolbar);
 }
 
 void QUnifiedToolbarSurface::setGeometry(const QRect &rect)
@@ -127,70 +155,25 @@ void QUnifiedToolbarSurface::updateToolbarOffset(QWidget *widget)
     mlayout->updateUnifiedToolbarOffset();
 }
 
-void QUnifiedToolbarSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &offset)
+void QUnifiedToolbarSurface::flush(QWidget *widget, const QRegion &region, const QPoint &offset)
 {
-    Q_D(QUnifiedToolbarSurface);
-
-    QRegion flushingRegion(widget->rect());
-
-    if (!d->image || rgn.rectCount() == 0) {
-        return;
-    }
-
+    Q_UNUSED(region);
     Q_UNUSED(offset);
 
-    // Get a context for the widget.
-    CGContextRef context;
-    if (!(widget->d_func()->hasOwnContext)) {
-        widget->d_func()->ut_rg = rgn;
-        widget->d_func()->ut_pt = offset;
-        qt_mac_display(widget);
-        return;
-    } else {
-        // We render the content of the toolbar in the surface.
-        updateToolbarOffset(widget);
-        QRect beginPaintRect(widget->d_func()->toolbar_offset.x(), widget->d_func()->toolbar_offset.y(), widget->geometry().width(), widget->geometry().height());
-        QRegion beginPaintRegion(beginPaintRect);
-
-        context = widget->d_func()->cgContext;
-        beginPaint(beginPaintRegion);
-        widget->render(widget->d_func()->unifiedSurface->paintDevice(), widget->d_func()->toolbar_offset, QRegion(), QWidget::DrawChildren);
-    }
+    this->flush(widget);
+}
 
-    CGContextSaveGState(context);
+void QUnifiedToolbarSurface::flush(QWidget *widget)
+{
+    Q_D(QUnifiedToolbarSurface);
 
-    int areaX = widget->d_func()->toolbar_offset.x();
-    int areaY = widget->d_func()->toolbar_offset.y();
-    int areaWidth = widget->geometry().width();
-    int areaHeight = widget->geometry().height();
-    const CGRect area = CGRectMake(areaX, areaY, areaWidth, areaHeight);
+    if (!d->image)
+        return;
 
-    // Clip to region.
-    const QVector<QRect> &rects = flushingRegion.rects();
-    for (int i = 0; i < rects.size(); ++i) {
-        const QRect &rect = rects.at(i);
-        CGContextAddRect(context, CGRectMake(rect.x(), rect.y(), rect.width(), rect.height()));
+    if (widget->d_func()->flushRequested) {
+        // We call display: directly to avoid flickering in the toolbar.
+        qt_mac_display(widget);
     }
-    CGContextAddRect(context, area);
-    CGContextClip(context);
-
-
-    CGImageRef image = CGBitmapContextCreateImage(d->image->cg);
-    CGImageRef subImage = CGImageCreateWithImageInRect(image, area);
-
-    const CGRect drawingArea = CGRectMake(0, 0, areaWidth, areaHeight);
-    qt_mac_drawCGImage(context, &drawingArea, subImage);
-
-    CGImageRelease(subImage);
-    CGImageRelease(image);
-
-    CGContextFlush(context);
-
-    // Restore context.
-    CGContextRestoreGState(context);
-    CGContextRelease(context);
-    widget->d_func()->cgContext = 0;
-    widget->d_func()->hasOwnContext = false;
 }
 
 void QUnifiedToolbarSurface::prepareBuffer(QImage::Format format, QWidget *widget)
@@ -198,7 +181,7 @@ void QUnifiedToolbarSurface::prepareBuffer(QImage::Format format, QWidget *widge
     Q_D(QUnifiedToolbarSurface);
 
     int width = geometry().width();
-    int height = geometry().height();
+    int height = 100; // FIXME
     if (d->image) {
         width = qMax(d->image->width(), width);
         height = qMax(d->image->height(), height);
@@ -254,6 +237,28 @@ void QUnifiedToolbarSurface::prepareBuffer(QImage::Format format, QWidget *widge
     delete oldImage;
 }
 
+CGContextRef QUnifiedToolbarSurface::imageContext()
+{
+    Q_D(QUnifiedToolbarSurface);
+    return d->image->cg;
+}
+
+void QUnifiedToolbarSurface::renderToolbar(QWidget *widget, bool forceFlush)
+{
+    QWidget *toolbar = widget->d_func()->toolbar_ancestor;
+
+    updateToolbarOffset(toolbar);
+    QRect beginPaintRect(toolbar->d_func()->toolbar_offset.x(), toolbar->d_func()->toolbar_offset.y(), toolbar->geometry().width(), toolbar->geometry().height());
+    QRegion beginPaintRegion(beginPaintRect);
+
+    beginPaint(beginPaintRegion);
+    toolbar->render(paintDevice(), toolbar->d_func()->toolbar_offset, QRegion(toolbar->geometry()), QWidget::DrawChildren);
+    toolbar->d_func()->flushRequested = true;
+
+    if (forceFlush)
+        flush(toolbar);
+}
+
 QT_END_NAMESPACE
 
 #endif // QT_MAC_USE_COCOA
diff --git a/src/gui/painting/qunifiedtoolbarsurface_mac_p.h b/src/gui/painting/qunifiedtoolbarsurface_mac_p.h
index e1157d7..0a7ebf1 100644
--- a/src/gui/painting/qunifiedtoolbarsurface_mac_p.h
+++ b/src/gui/painting/qunifiedtoolbarsurface_mac_p.h
@@ -55,6 +55,7 @@
 
 #include <private/qwindowsurface_raster_p.h>
 #include <QWidget>
+#include <QToolBar>
 #include <private/qwidget_p.h>
 #include <private/qnativeimage_p.h>
 
@@ -78,16 +79,22 @@ public:
     QUnifiedToolbarSurface(QWidget *widget);
     ~QUnifiedToolbarSurface();
 
+    void flush(QWidget *widget);
     void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
     void setGeometry(const QRect &rect);
     void beginPaint(const QRegion &rgn);
     void insertToolbar(QWidget *toolbar, const QPoint &offset);
+    void removeToolbar(QToolBar *toolbar);
+    void updateToolbarOffset(QWidget *widget);
+    void renderToolbar(QWidget *widget, bool forceFlush = false);
+    void recursiveRedirect(QObject *widget, QWidget *parent_toolbar, const QPoint &offset);
 
-private:
     QPaintDevice *paintDevice();
-    void updateToolbarOffset(QWidget *widget);
+    CGContextRef imageContext();
+
+private:
     void prepareBuffer(QImage::Format format, QWidget *widget);
-    void recursiveRedirect(QObject *widget, const QPoint &offset);
+    void recursiveRemoval(QObject *object);
 
     Q_DECLARE_PRIVATE(QUnifiedToolbarSurface)
     QScopedPointer<QUnifiedToolbarSurfacePrivate> d_ptr;
diff --git a/src/gui/painting/qwindowsurface.cpp b/src/gui/painting/qwindowsurface.cpp
index 029b9dc..0fb9bf7 100644
--- a/src/gui/painting/qwindowsurface.cpp
+++ b/src/gui/painting/qwindowsurface.cpp
@@ -52,8 +52,6 @@ class QWindowSurfacePrivate
 public:
     QWindowSurfacePrivate(QWidget *w)
         : window(w)
-        , staticContentsSupport(0)
-        , partialUpdateSupport(1)
     {
     }
 
@@ -65,8 +63,6 @@ public:
 #endif //Q_WS_QPA
     QRegion staticContents;
     QList<QImage*> bufferImages;
-    uint staticContentsSupport : 1;
-    uint partialUpdateSupport : 1;
 };
 
 /*!
@@ -311,20 +307,6 @@ QPoint QWindowSurface::offset(const QWidget *widget) const
   window surface.
 */
 
-bool QWindowSurface::hasStaticContentsSupport() const
-{
-    return d_ptr->staticContentsSupport;
-}
-
-void QWindowSurface::setStaticContentsSupport(bool enable)
-{
-    if (enable && !d_ptr->partialUpdateSupport) {
-        qWarning("QWindowSurface::setStaticContentsSupport: static contents support requires partial update support");
-        return;
-    }
-    d_ptr->staticContentsSupport = enable;
-}
-
 void QWindowSurface::setStaticContents(const QRegion &region)
 {
     d_ptr->staticContents = region;
@@ -337,21 +319,12 @@ QRegion QWindowSurface::staticContents() const
 
 bool QWindowSurface::hasStaticContents() const
 {
-    return d_ptr->staticContentsSupport && !d_ptr->staticContents.isEmpty();
-}
-
-bool QWindowSurface::hasPartialUpdateSupport() const
-{
-    return d_ptr->partialUpdateSupport;
+    return hasFeature(QWindowSurface::StaticContents) && !d_ptr->staticContents.isEmpty();
 }
 
-void QWindowSurface::setPartialUpdateSupport(bool enable)
+QWindowSurface::WindowSurfaceFeatures QWindowSurface::features() const
 {
-    if (!enable && d_ptr->staticContentsSupport) {
-        qWarning("QWindowSurface::setPartialUpdateSupport: static contents support requires partial update support");
-        return;
-    }
-    d_ptr->partialUpdateSupport = enable;
+    return PartialUpdates | PreservedContents;
 }
 
 #ifdef Q_WS_QPA
diff --git a/src/gui/painting/qwindowsurface_p.h b/src/gui/painting/qwindowsurface_p.h
index 62137ef..a3fea67 100644
--- a/src/gui/painting/qwindowsurface_p.h
+++ b/src/gui/painting/qwindowsurface_p.h
@@ -68,6 +68,14 @@ class QPlatformWindow;
 class Q_GUI_EXPORT QWindowSurface
 {
 public:
+    enum WindowSurfaceFeature {
+        PartialUpdates               = 0x00000001, // Supports doing partial updates.
+        PreservedContents            = 0x00000002, // Supports doing flush without first doing a repaint.
+        StaticContents               = 0x00000004, // Supports having static content regions when being resized.
+        AllFeatures                  = 0xffffffff  // For convenience
+    };
+    Q_DECLARE_FLAGS(WindowSurfaceFeatures, WindowSurfaceFeature)
+
     QWindowSurface(QWidget *window, bool setDefaultSurface = true);
     virtual ~QWindowSurface();
 
@@ -100,26 +108,31 @@ public:
     virtual QPoint offset(const QWidget *widget) const;
     inline QRect rect(const QWidget *widget) const;
 
-    bool hasStaticContentsSupport() const;
-    bool hasPartialUpdateSupport() const;
+    bool hasFeature(WindowSurfaceFeature feature) const;
+    virtual WindowSurfaceFeatures features() const;
 
     void setStaticContents(const QRegion &region);
     QRegion staticContents() const;
 
 protected:
     bool hasStaticContents() const;
-    void setStaticContentsSupport(bool enable);
-    void setPartialUpdateSupport(bool enable);
 
 private:
     QWindowSurfacePrivate *d_ptr;
 };
 
+Q_DECLARE_OPERATORS_FOR_FLAGS(QWindowSurface::WindowSurfaceFeatures)
+
 inline QRect QWindowSurface::rect(const QWidget *widget) const
 {
     return widget->rect().translated(offset(widget));
 }
 
+inline bool QWindowSurface::hasFeature(WindowSurfaceFeature feature) const
+{
+    return (features() & feature) != 0;
+}
+
 QT_END_NAMESPACE
 
 #endif // QWINDOWSURFACE_P_H
diff --git a/src/gui/painting/qwindowsurface_raster.cpp b/src/gui/painting/qwindowsurface_raster.cpp
index 419518ac..9860841 100644
--- a/src/gui/painting/qwindowsurface_raster.cpp
+++ b/src/gui/painting/qwindowsurface_raster.cpp
@@ -103,7 +103,11 @@ QRasterWindowSurface::QRasterWindowSurface(QWidget *window, bool setDefaultSurfa
 #endif
     d_ptr->image = 0;
     d_ptr->inSetGeometry = false;
-    setStaticContentsSupport(true);
+
+#ifdef QT_MAC_USE_COCOA
+    needsFlush = false;
+    regionToFlush = QRegion();
+#endif // QT_MAC_USE_COCOA
 }
 
 
@@ -272,41 +276,26 @@ void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoi
 
 #ifdef Q_WS_MAC
 
+    Q_UNUSED(offset);
+
     // This is mainly done for native components like native "open file" dialog.
     if (widget->testAttribute(Qt::WA_DontShowOnScreen)) {
         return;
     }
 
 #ifdef QT_MAC_USE_COCOA
-    // Unified toolbar hack.
-    QMainWindow* mWindow = qobject_cast<QMainWindow*>(widget->window());
-    if (mWindow) {
-        QMainWindowLayout *mLayout = qobject_cast<QMainWindowLayout*>(mWindow->layout());
-        QList<QToolBar *> toolbarList = mLayout->qtoolbarsInUnifiedToolbarList;
 
-        for (int i = 0; i < toolbarList.size(); ++i) {
-            QToolBar* toolbar = toolbarList.at(i);
-            if (mLayout->toolBarArea(toolbar) == Qt::TopToolBarArea) {
-                QWidget* tbWidget = (QWidget*) toolbar;
-                if (tbWidget->d_func()->unifiedSurface) {
-                    tbWidget->d_func()->unifiedSurface->flush(tbWidget, rgn, offset);
-                }
-            }
-        }
-    }
-#endif // QT_MAC_USE_COCOA
+    this->needsFlush = true;
+    this->regionToFlush += rgn;
 
-    Q_UNUSED(offset);
+    // The actual flushing will be processed in [view drawRect:rect]
+    qt_mac_setNeedsDisplay(widget);
+
+#else
     // Get a context for the widget.
-#ifndef QT_MAC_USE_COCOA
     CGContextRef context;
     CGrafPtr port = GetWindowPort(qt_mac_window_for(widget));
     QDBeginCGContext(port, &context);
-#else
-    QMacCocoaAutoReleasePool pool;
-    extern CGContextRef qt_mac_graphicsContextFor(QWidget *);
-    CGContextRef context = qt_mac_graphicsContextFor(widget);
-#endif
     CGContextRetain(context);
     CGContextSaveGState(context);
 
@@ -332,16 +321,12 @@ void QRasterWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoi
     CGImageRelease(subImage);
     CGImageRelease(image);
 
-#ifndef QT_MAC_USE_COCOA
     QDEndCGContext(port, &context);
-#else
-    CGContextFlush(context);
-#endif
 
     // Restore context.
     CGContextRestoreGState(context);
     CGContextRelease(context);
-
+#endif // QT_MAC_USE_COCOA
 
 #endif // Q_WS_MAC
 
@@ -425,6 +410,10 @@ bool QRasterWindowSurface::scroll(const QRegion &area, int dx, int dy)
 #endif
 }
 
+QWindowSurface::WindowSurfaceFeatures QRasterWindowSurface::features() const
+{
+    return QWindowSurface::AllFeatures;
+}
 
 void QRasterWindowSurface::prepareBuffer(QImage::Format format, QWidget *widget)
 {
@@ -487,4 +476,12 @@ void QRasterWindowSurface::prepareBuffer(QImage::Format format, QWidget *widget)
     delete oldImage;
 }
 
+#ifdef QT_MAC_USE_COCOA
+CGContextRef QRasterWindowSurface::imageContext()
+{
+    Q_D(QRasterWindowSurface);
+    return d->image->cg;
+}
+#endif // QT_MAC_USE_COCOA
+
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qwindowsurface_raster_p.h b/src/gui/painting/qwindowsurface_raster_p.h
index 903810b..06abcd3 100644
--- a/src/gui/painting/qwindowsurface_raster_p.h
+++ b/src/gui/painting/qwindowsurface_raster_p.h
@@ -56,6 +56,10 @@
 #include <qglobal.h>
 #include "private/qwindowsurface_p.h"
 
+#ifdef QT_MAC_USE_COCOA
+# include <private/qt_cocoa_helpers_mac_p.h>
+#endif // QT_MAC_USE_COCOA
+
 QT_BEGIN_NAMESPACE
 
 #ifdef Q_WS_WIN
@@ -105,6 +109,14 @@ public:
     void beginPaint(const QRegion &rgn);
     void setGeometry(const QRect &rect);
     bool scroll(const QRegion &area, int dx, int dy);
+    WindowSurfaceFeatures features() const;
+
+#ifdef QT_MAC_USE_COCOA
+    CGContextRef imageContext();
+
+    bool needsFlush;
+    QRegion regionToFlush;
+#endif // QT_MAC_USE_COCOA
 
 private:
 #if defined(Q_WS_X11) && !defined(QT_NO_MITSHM)
diff --git a/src/gui/painting/qwindowsurface_s60.cpp b/src/gui/painting/qwindowsurface_s60.cpp
index 71556d7..9fa01ed 100644
--- a/src/gui/painting/qwindowsurface_s60.cpp
+++ b/src/gui/painting/qwindowsurface_s60.cpp
@@ -63,7 +63,6 @@ struct QS60WindowSurfacePrivate
 
 TDisplayMode displayMode(bool opaque)
 {
-
     TDisplayMode mode = S60->screenDevice()->DisplayMode();
     if (opaque) {
         mode = EColor16MU;
@@ -76,10 +75,18 @@ TDisplayMode displayMode(bool opaque)
     return mode;
 }
 
+bool blitWriteAlpha(QWidgetPrivate *widgetPrivate)
+{
+    QWExtra *extra = widgetPrivate->extraData();
+    return extra ? extra->nativePaintMode == QWExtra::BlitWriteAlpha : false;
+}
+
 QS60WindowSurface::QS60WindowSurface(QWidget* widget)
     : QWindowSurface(widget), d_ptr(new QS60WindowSurfacePrivate)
 {
-    TDisplayMode mode = displayMode(qt_widget_private(widget)->isOpaque);
+    QWidgetPrivate *widgetPrivate = qt_widget_private(widget);
+    const bool opaque = widgetPrivate->isOpaque && !blitWriteAlpha(widgetPrivate);
+    TDisplayMode mode = displayMode(opaque);
     // We create empty CFbsBitmap here -> it will be resized in setGeometry
     CFbsBitmap *bitmap = new CFbsBitmap;	// CBase derived object needs check on new
     Q_CHECK_PTR(bitmap);
@@ -90,8 +97,6 @@ QS60WindowSurface::QS60WindowSurface(QWidget* widget)
         data->fromSymbianBitmap(bitmap, true);
         d_ptr->device = QPixmap(data);
     }
-
-    setStaticContentsSupport(true);
 }
 
 QS60WindowSurface::~QS60WindowSurface()
@@ -124,7 +129,8 @@ void QS60WindowSurface::beginPaint(const QRegion &rgn)
     S60->wsSession().Finish();
 #endif
 
-    if (!qt_widget_private(window())->isOpaque) {
+    QWidgetPrivate *windowPrivate = qt_widget_private(window());
+    if (!windowPrivate->isOpaque || blitWriteAlpha(windowPrivate)) {
         QS60PixmapData *pixmapData = static_cast<QS60PixmapData *>(d_ptr->device.data_ptr().data());
 
         TDisplayMode mode = displayMode(false);
@@ -133,12 +139,14 @@ void QS60WindowSurface::beginPaint(const QRegion &rgn)
 
         pixmapData->beginDataAccess();
 
-        QPainter p(&pixmapData->image);
-        p.setCompositionMode(QPainter::CompositionMode_Source);
-        const QVector<QRect> rects = rgn.rects();
-        const QColor blank = Qt::transparent;
-        for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
-            p.fillRect(*it, blank);
+        if (!windowPrivate->isOpaque) {
+            QPainter p(&pixmapData->image);
+            p.setCompositionMode(QPainter::CompositionMode_Source);
+            const QVector<QRect> rects = rgn.rects();
+            const QColor blank = Qt::transparent;
+            for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
+                p.fillRect(*it, blank);
+            }
         }
 
         pixmapData->endDataAccess();
@@ -231,6 +239,11 @@ void QS60WindowSurface::setGeometry(const QRect& rect)
     QWindowSurface::setGeometry(rect);
 }
 
+QWindowSurface::WindowSurfaceFeatures QS60WindowSurface::features() const
+{
+    return QWindowSurface::AllFeatures;
+}
+
 CFbsBitmap* QS60WindowSurface::symbianBitmap() const
 {
     QS60PixmapData *data = static_cast<QS60PixmapData*>(d_ptr->device.data_ptr().data());
diff --git a/src/gui/painting/qwindowsurface_s60_p.h b/src/gui/painting/qwindowsurface_s60_p.h
index d0d4925..25018d8 100644
--- a/src/gui/painting/qwindowsurface_s60_p.h
+++ b/src/gui/painting/qwindowsurface_s60_p.h
@@ -79,6 +79,8 @@ public:
 
     void setGeometry(const QRect &rect);
 
+    WindowSurfaceFeatures features() const;
+
     CFbsBitmap *symbianBitmap() const;
 
 private:
diff --git a/src/gui/painting/qwindowsurface_x11.cpp b/src/gui/painting/qwindowsurface_x11.cpp
index 2324bc2..deb83b4 100644
--- a/src/gui/painting/qwindowsurface_x11.cpp
+++ b/src/gui/painting/qwindowsurface_x11.cpp
@@ -70,9 +70,6 @@ QX11WindowSurface::QX11WindowSurface(QWidget *widget)
 #ifndef QT_NO_XRENDER
     d_ptr->translucentBackground = X11->use_xrender
         && widget->x11Info().depth() == 32;
-    setStaticContentsSupport(!d_ptr->translucentBackground);
-#else
-    setStaticContentsSupport(true);
 #endif
 }
 
@@ -253,4 +250,16 @@ QPixmap QX11WindowSurface::grabWidget(const QWidget *widget,
     return px;
 }
 
+QWindowSurface::WindowSurfaceFeatures QX11WindowSurface::features() const
+{
+    WindowSurfaceFeatures features = QWindowSurface::PartialUpdates | QWindowSurface::PreservedContents;
+#ifndef QT_NO_XRENDER
+    if (!d_ptr->translucentBackground)
+        features |= QWindowSurface::StaticContents;
+#else
+    features |= QWindowSurface::StaticContents;
+#endif
+    return features;
+}
+
 QT_END_NAMESPACE
diff --git a/src/gui/painting/qwindowsurface_x11_p.h b/src/gui/painting/qwindowsurface_x11_p.h
index 88753ea..df76f98 100644
--- a/src/gui/painting/qwindowsurface_x11_p.h
+++ b/src/gui/painting/qwindowsurface_x11_p.h
@@ -80,6 +80,8 @@ public:
     bool scroll(const QRegion &area, int dx, int dy);
     QPixmap grabWidget(const QWidget *widget,
                        const QRect& rectangle = QRect()) const;
+    WindowSurfaceFeatures features() const;
+
 private:
     QX11WindowSurfacePrivate *d_ptr;
     GC gc;