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

9 files changed, 54 insertions, 22 deletions

diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
index fb67278..a6f5992 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
+++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
@@ -1272,7 +1272,6 @@ void QGraphicsAnchorLayoutPrivate::createLayoutEdges()
     addAnchor_helper(layout, Qt::AnchorLeft, layout,
                      Qt::AnchorRight, data);
     data->maxSize = QWIDGETSIZE_MAX;
-    data->skipInPreferred = 1;
 
     // Save a reference to layout vertices
     layoutFirstVertex[Horizontal] = internalVertex(layout, Qt::AnchorLeft);
@@ -1284,7 +1283,6 @@ void QGraphicsAnchorLayoutPrivate::createLayoutEdges()
     addAnchor_helper(layout, Qt::AnchorTop, layout,
                      Qt::AnchorBottom, data);
     data->maxSize = QWIDGETSIZE_MAX;
-    data->skipInPreferred = 1;
 
     // Save a reference to layout vertices
     layoutFirstVertex[Vertical] = internalVertex(layout, Qt::AnchorTop);
@@ -2271,13 +2269,21 @@ QList<QSimplexConstraint *> QGraphicsAnchorLayoutPrivate::constraintsFromSizeHin
         layoutEdge = graph[orient].edgeData(layoutFirstVertex[orient], layoutCentralVertex[orient]);
     } else {
         layoutEdge = graph[orient].edgeData(layoutFirstVertex[orient], layoutLastVertex[orient]);
+    }
 
-        // If maxSize is less then "infinite", that means there are other anchors
-        // grouped together with this one. We can't ignore its maximum value so we
-        // set back the variable to NULL to prevent the continue condition from being
-        // satisfied in the loop below.
-        if (layoutEdge->maxSize < QWIDGETSIZE_MAX)
-            layoutEdge = 0;
+    // If maxSize is less then "infinite", that means there are other anchors
+    // grouped together with this one. We can't ignore its maximum value so we
+    // set back the variable to NULL to prevent the continue condition from being
+    // satisfied in the loop below.
+    const qreal expectedMax = layoutCentralVertex[orient] ? QWIDGETSIZE_MAX / 2 : QWIDGETSIZE_MAX;
+    qreal actualMax;
+    if (layoutEdge->from == layoutFirstVertex[orient]) {
+        actualMax = layoutEdge->maxSize;
+    } else {
+        actualMax = -layoutEdge->minSize;
+    }
+    if (actualMax != expectedMax) {
+        layoutEdge = 0;
     }
 
     // For each variable, create constraints based on size hints
@@ -2700,7 +2706,9 @@ bool QGraphicsAnchorLayoutPrivate::solvePreferred(const QList<QSimplexConstraint
     //
     for (int i = 0; i < variables.size(); ++i) {
         AnchorData *ad = variables.at(i);
-        if (ad->skipInPreferred)
+
+        // The layout original structure anchors are not relevant in preferred size calculation
+        if (ad->isLayoutAnchor)
             continue;
 
         QSimplexVariable *grower = new QSimplexVariable;
diff --git a/src/gui/graphicsview/qgraphicsanchorlayout_p.h b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
index 2b365fb..8529e2e 100644
--- a/src/gui/graphicsview/qgraphicsanchorlayout_p.h
+++ b/src/gui/graphicsview/qgraphicsanchorlayout_p.h
@@ -124,8 +124,7 @@ struct AnchorData : public QSimplexVariable {
         : QSimplexVariable(), from(0), to(0),
           minSize(0), prefSize(0), maxSize(0),
           sizeAtMinimum(0), sizeAtPreferred(0),
-          sizeAtMaximum(0), item(0),
-          graphicsAnchor(0), skipInPreferred(0),
+          sizeAtMaximum(0), item(0), graphicsAnchor(0),
           type(Normal), isLayoutAnchor(false),
           isCenterAnchor(false), orientation(0),
           dependency(Independent) {}
@@ -169,7 +168,6 @@ struct AnchorData : public QSimplexVariable {
     QGraphicsLayoutItem *item;
     QGraphicsAnchor *graphicsAnchor;
 
-    uint skipInPreferred : 1;
     uint type : 2;            // either Normal, Sequential or Parallel
     uint isLayoutAnchor : 1;  // if this anchor is an internal layout anchor
     uint isCenterAnchor : 1;
diff --git a/src/gui/image/qnativeimage.cpp b/src/gui/image/qnativeimage.cpp
index e4ea2e9..3b43ab6 100644
--- a/src/gui/image/qnativeimage.cpp
+++ b/src/gui/image/qnativeimage.cpp
@@ -178,6 +178,8 @@ QNativeImage::QNativeImage(int width, int height, QImage::Format format,bool /*
     if (ok) {
         xshmimg->data = (char*)shmat(xshminfo.shmid, 0, 0);
         xshminfo.shmaddr = xshmimg->data;
+        if (shmctl(xshminfo.shmid, IPC_RMID, 0) == -1)
+            qWarning() << "Error while marking the shared memory segment to be destroyed";
         ok = (xshminfo.shmaddr != (char*)-1);
         if (ok)
             image = QImage((uchar *)xshmimg->data, width, height, systemFormat());
diff --git a/src/gui/itemviews/qheaderview.cpp b/src/gui/itemviews/qheaderview.cpp
index 5df8481..6f0fba6 100644
--- a/src/gui/itemviews/qheaderview.cpp
+++ b/src/gui/itemviews/qheaderview.cpp
@@ -1913,7 +1913,6 @@ void QHeaderView::initializeSections(int start, int end)
     Q_ASSERT(start >= 0);
     Q_ASSERT(end >= 0);
 
-    d->executePostedLayout();
     d->invalidateCachedSizeHint();
 
     if (end + 1 < d->sectionCount) {
@@ -1939,11 +1938,25 @@ void QHeaderView::initializeSections(int start, int end)
     d->sectionCount = end + 1;
 
     if (!d->logicalIndices.isEmpty()) {
-        d->logicalIndices.resize(d->sectionCount);
-        d->visualIndices.resize(d->sectionCount);
-        for (int i = start; i < d->sectionCount; ++i){
-            d->logicalIndices[i] = i;
-            d->visualIndices[i] = i;
+        if (oldCount <= d->sectionCount) {
+            d->logicalIndices.resize(d->sectionCount);
+            d->visualIndices.resize(d->sectionCount);
+            for (int i = oldCount; i < d->sectionCount; ++i) {
+                d->logicalIndices[i] = i;
+                d->visualIndices[i] = i;
+            }
+        } else {
+            int j = 0;
+            for (int i = 0; i < oldCount; ++i) {
+                int v = d->logicalIndices.at(i);
+                if (v < d->sectionCount) {
+                    d->logicalIndices[j] = v;
+                    d->visualIndices[v] = j;
+                    j++;
+                }
+            }
+            d->logicalIndices.resize(d->sectionCount);
+            d->visualIndices.resize(d->sectionCount);
         }
     }
 
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index a16d1f8..72eedad 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -1451,7 +1451,7 @@ Qt::DropAction QDragManager::drag(QDrag *o)
     [image release];
     dragPrivate()->executed_action = Qt::IgnoreAction;
     object = 0;
-    Qt::DropAction performedAction(qt_mac_mapNSDragOperation(dndParams.performedAction));
+    Qt::DropAction performedAction(qt_mac_mapNSDragOperation(qMacDnDParams()->performedAction));
     // do post drag processing, if required.
     if(performedAction != Qt::IgnoreAction) {
         // check if the receiver points us to a file location.
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index 048325c..523dd18 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -1767,6 +1767,12 @@ void QTextDocument::print(QPrinter *printer) const
     fromPage = qMax(1, fromPage);
     toPage = qMin(doc->pageCount(), toPage);
 
+    if (toPage < fromPage) {
+        // if the user entered a page range outside the actual number
+        // of printable pages, just return
+        return;
+    }
+
     if (printer->pageOrder() == QPrinter::LastPageFirst) {
         int tmp = fromPage;
         fromPage = toPage;
diff --git a/src/gui/widgets/qabstractbutton.cpp b/src/gui/widgets/qabstractbutton.cpp
index cb46791..8834373 100644
--- a/src/gui/widgets/qabstractbutton.cpp
+++ b/src/gui/widgets/qabstractbutton.cpp
@@ -165,7 +165,7 @@ QAbstractButtonPrivate::QAbstractButtonPrivate(QSizePolicy::ControlType type)
     shortcutId(0),
 #endif
     checkable(false), checked(false), autoRepeat(false), autoExclusive(false),
-    down(false), blockRefresh(false),
+    down(false), blockRefresh(false), pressed(false),
 #ifndef QT_NO_BUTTONGROUP
     group(0),
 #endif
@@ -1090,6 +1090,7 @@ void QAbstractButton::mousePressEvent(QMouseEvent *e)
     }
     if (hitButton(e->pos())) {
         setDown(true);
+        d->pressed = true;
         repaint(); //flush paint event before invoking potentially expensive operation
         QApplication::flush();
         d->emitPressed();
@@ -1103,6 +1104,8 @@ void QAbstractButton::mousePressEvent(QMouseEvent *e)
 void QAbstractButton::mouseReleaseEvent(QMouseEvent *e)
 {
     Q_D(QAbstractButton);
+    d->pressed = false;
+
     if (e->button() != Qt::LeftButton) {
         e->ignore();
         return;
@@ -1127,7 +1130,7 @@ void QAbstractButton::mouseReleaseEvent(QMouseEvent *e)
 void QAbstractButton::mouseMoveEvent(QMouseEvent *e)
 {
     Q_D(QAbstractButton);
-    if (!(e->buttons() & Qt::LeftButton)) {
+    if (!(e->buttons() & Qt::LeftButton) || !d->pressed) {
         e->ignore();
         return;
     }
diff --git a/src/gui/widgets/qabstractbutton_p.h b/src/gui/widgets/qabstractbutton_p.h
index be7c022..d86163b 100644
--- a/src/gui/widgets/qabstractbutton_p.h
+++ b/src/gui/widgets/qabstractbutton_p.h
@@ -77,6 +77,7 @@ public:
     uint autoExclusive :1;
     uint down :1;
     uint blockRefresh :1;
+    uint pressed : 1;
 
 #ifndef QT_NO_BUTTONGROUP
     QButtonGroup* group;
diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index e50de02..40cfe1a 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -1486,7 +1486,8 @@ bool QMenuBar::event(QEvent *e)
     break;
     case QEvent::ShortcutOverride: {
         QKeyEvent *kev = static_cast<QKeyEvent*>(e);
-        if (kev->key() == Qt::Key_Escape) {
+        //we only filter out escape if there is a current action
+        if (kev->key() == Qt::Key_Escape && d->currentAction) {
             e->accept();
             return true;
         }