Merge commit 'widget/4.6' into oslo-staging-2/4.6

Conflicts:
	src/gui/painting/qbrush.cpp

13 files changed, 78 insertions, 74 deletions

diff --git a/src/gui/widgets/qabstractscrollarea.cpp b/src/gui/widgets/qabstractscrollarea.cpp
index b0d0baf..35639b7 100644
--- a/src/gui/widgets/qabstractscrollarea.cpp
+++ b/src/gui/widgets/qabstractscrollarea.cpp
@@ -1130,10 +1130,13 @@ void QAbstractScrollArea::mouseMoveEvent(QMouseEvent *e)
 void QAbstractScrollArea::wheelEvent(QWheelEvent *e)
 {
     Q_D(QAbstractScrollArea);
-    if (static_cast<QWheelEvent*>(e)->orientation() == Qt::Horizontal)
-        QApplication::sendEvent(d->hbar, e);
-    else
-        QApplication::sendEvent(d->vbar, e);
+    QScrollBar *const bars[2] = { d->hbar, d->vbar };
+    int idx = (e->orientation() == Qt::Vertical) ? 1 : 0;
+    int other = (idx + 1) % 2;
+    if (!bars[idx]->isVisible() && bars[other]->isVisible())
+        idx = other;   // If the scrollbar of the event orientation is hidden, fallback to the other.
+
+    QApplication::sendEvent(bars[idx], e);
 }
 #endif
 
diff --git a/src/gui/widgets/qabstractslider.cpp b/src/gui/widgets/qabstractslider.cpp
index fec9fab..e0db9c2 100644
--- a/src/gui/widgets/qabstractslider.cpp
+++ b/src/gui/widgets/qabstractslider.cpp
@@ -690,8 +690,6 @@ void QAbstractSlider::wheelEvent(QWheelEvent * e)
 {
     Q_D(QAbstractSlider);
     e->ignore();
-    if (e->orientation() != d->orientation && !rect().contains(e->pos()))
-        return;
 
     int stepsToScroll = 0;
     qreal offset = qreal(e->delta()) / 120;
diff --git a/src/gui/widgets/qdockarealayout.cpp b/src/gui/widgets/qdockarealayout.cpp
index dffec11..953edab 100644
--- a/src/gui/widgets/qdockarealayout.cpp
+++ b/src/gui/widgets/qdockarealayout.cpp
@@ -1841,7 +1841,6 @@ void QDockAreaLayoutInfo::saveState(QDataStream &stream) const
     }
 }
 
-#ifdef Q_WS_MAC
 static Qt::DockWidgetArea toDockWidgetArea(QInternal::DockPosition pos)
 {
     switch (pos) {
@@ -1853,7 +1852,6 @@ static Qt::DockWidgetArea toDockWidgetArea(QInternal::DockPosition pos)
     }
     return Qt::NoDockWidgetArea;
 }
-#endif
 
 static QRect constrainedRect(QRect rect, const QRect &desktop)
 {
@@ -1933,6 +1931,9 @@ bool QDockAreaLayoutInfo::restoreState(QDataStream &stream, QList<QDockWidget*>
                     item_list.append(item);
             } else {
                 QDockAreaLayoutItem item(new QDockWidgetItem(widget));
+                if (!testing) {
+                    item_list.append(item);
+                }
                 if (flags & StateFlagFloating) {
                	    bool drawer = false;
 #ifdef Q_WS_MAC // drawer support
@@ -1977,12 +1978,10 @@ bool QDockAreaLayoutInfo::restoreState(QDataStream &stream, QList<QDockWidget*>
                     if (!testing) {
                         widget->setFloating(false);
                         widget->setVisible(flags & StateFlagVisible);
+                        emit widget->dockLocationChanged(toDockWidgetArea(dockPos));
                     }
                 }
 
-                if (!testing) {
-                    item_list.append(item);
-                }
             }
         } else if (nextMarker == SequenceMarker) {
             int dummy;
diff --git a/src/gui/widgets/qdockwidget.cpp b/src/gui/widgets/qdockwidget.cpp
index a8e2a37..9cf6af1 100644
--- a/src/gui/widgets/qdockwidget.cpp
+++ b/src/gui/widgets/qdockwidget.cpp
@@ -1225,6 +1225,7 @@ void QDockWidget::setFeatures(QDockWidget::DockWidgetFeatures features)
     features &= DockWidgetFeatureMask;
     if (d->features == features)
         return;
+    const bool closableChanged = (d->features ^ features) & DockWidgetClosable;
     d->features = features;
     QDockWidgetLayout *layout
         = qobject_cast<QDockWidgetLayout*>(this->layout());
@@ -1233,6 +1234,10 @@ void QDockWidget::setFeatures(QDockWidget::DockWidgetFeatures features)
     d->toggleViewAction->setEnabled((d->features & DockWidgetClosable) == DockWidgetClosable);
     emit featuresChanged(d->features);
     update();
+    if (closableChanged && layout->nativeWindowDeco()) {
+        //this ensures the native decoration is drawn
+        d->setWindowState(true /*floating*/, true /*unplug*/);
+    }
 }
 
 QDockWidget::DockWidgetFeatures QDockWidget::features() const
diff --git a/src/gui/widgets/qfontcombobox.cpp b/src/gui/widgets/qfontcombobox.cpp
index 806db59..d601f81 100644
--- a/src/gui/widgets/qfontcombobox.cpp
+++ b/src/gui/widgets/qfontcombobox.cpp
@@ -247,7 +247,14 @@ void QFontComboBoxPrivate::_q_updateModel()
     }
     list = result;
 
+    //we need to block the signals so that the model doesn't emit reset
+    //this prevents the current index from changing
+    //it will be updated just after this
+    ///TODO: we should finda way to avoid blocking signals and have a real update of the model
+    const bool old = m->blockSignals(true);
     m->setStringList(list);
+    m->blockSignals(old);
+
     if (list.isEmpty()) {
         if (currentFont != QFont()) {
             currentFont = QFont();
@@ -420,8 +427,10 @@ void QFontComboBox::setCurrentFont(const QFont &font)
     Q_D(QFontComboBox);
     if (font != d->currentFont) {
         d->currentFont = font;
-        emit currentFontChanged(d->currentFont);
         d->_q_updateModel();
+        if (d->currentFont == font) { //else the signal has already be emitted by _q_updateModel
+            emit currentFontChanged(d->currentFont);
+        }
     }
 }
 
diff --git a/src/gui/widgets/qmenu.cpp b/src/gui/widgets/qmenu.cpp
index cc39b7f..54d1612 100644
--- a/src/gui/widgets/qmenu.cpp
+++ b/src/gui/widgets/qmenu.cpp
@@ -602,14 +602,7 @@ void QMenuPrivate::setCurrentAction(QAction *action, int popup, SelectionReason
         }
 #ifndef QT_NO_STATUSTIP
     }  else if (previousAction) {
-        QWidget *w = causedPopup.widget;
-        while (QMenu *m = qobject_cast<QMenu*>(w))
-            w = m->d_func()->causedPopup.widget;
-        if (w) {
-            QString empty;
-            QStatusTipEvent tip(empty);
-            QApplication::sendEvent(w, &tip);
-        }
+        previousAction->d_func()->showStatusText(topCausedWidget(), QString());
 #endif
     }
     if (hideActiveMenu) {
@@ -623,6 +616,15 @@ void QMenuPrivate::setCurrentAction(QAction *action, int popup, SelectionReason
     }
 }
 
+//return the top causedPopup.widget that is not a QMenu
+QWidget *QMenuPrivate::topCausedWidget() const
+{
+    QWidget* top = causedPopup.widget;
+    while (QMenu* m = qobject_cast<QMenu *>(top))
+        top = m->d_func()->causedPopup.widget;
+    return top;
+}
+
 QAction *QMenuPrivate::actionAt(QPoint p) const
 {
     if (!q_func()->rect().contains(p))     //sanity check
@@ -1094,10 +1096,7 @@ void QMenuPrivate::activateAction(QAction *action, QAction::ActionEvent action_e
             QAccessible::updateAccessibility(q, actionIndex, QAccessible::Selection);
         }
 #endif
-        QWidget *w = causedPopup.widget;
-        while (QMenu *m = qobject_cast<QMenu*>(w))
-            w = m->d_func()->causedPopup.widget;
-        action->showStatusText(w);
+        action->showStatusText(topCausedWidget());
     } else {
         actionAboutToTrigger = 0;
     }
@@ -1801,10 +1800,7 @@ void QMenu::popup(const QPoint &p, QAction *atAction)
 #ifndef QT_NO_MENUBAR
     // if this menu is part of a chain attached to a QMenuBar, set the
     // _NET_WM_WINDOW_TYPE_DROPDOWN_MENU X11 window type
-    QWidget* top = this;
-    while (QMenu* m = qobject_cast<QMenu *>(top))
-        top = m->d_func()->causedPopup.widget;
-    setAttribute(Qt::WA_X11NetWmWindowTypeDropDownMenu, qobject_cast<QMenuBar *>(top) != 0);
+    setAttribute(Qt::WA_X11NetWmWindowTypeDropDownMenu, qobject_cast<QMenuBar *>(d->topCausedWidget()) != 0);
 #endif
 
     ensurePolished(); // Get the right font
@@ -2752,18 +2748,14 @@ void QMenu::keyPressEvent(QKeyEvent *e)
             }
         }
         if (!key_consumed) {
-            if (QWidget *caused = d->causedPopup.widget) {
-                while(QMenu *m = qobject_cast<QMenu*>(caused))
-                    caused = m->d_func()->causedPopup.widget;
 #ifndef QT_NO_MENUBAR
-                if (QMenuBar *mb = qobject_cast<QMenuBar*>(caused)) {
-                    QAction *oldAct = mb->d_func()->currentAction;
-                    QApplication::sendEvent(mb, e);
-                    if (mb->d_func()->currentAction != oldAct)
-                        key_consumed = true;
-                }
-#endif
+            if (QMenuBar *mb = qobject_cast<QMenuBar*>(d->topCausedWidget())) {
+                QAction *oldAct = mb->d_func()->currentAction;
+                QApplication::sendEvent(mb, e);
+                if (mb->d_func()->currentAction != oldAct)
+                    key_consumed = true;
             }
+#endif
         }
 
 #ifdef Q_OS_WIN32
diff --git a/src/gui/widgets/qmenu_p.h b/src/gui/widgets/qmenu_p.h
index a5bde7c..c021063 100644
--- a/src/gui/widgets/qmenu_p.h
+++ b/src/gui/widgets/qmenu_p.h
@@ -215,6 +215,7 @@ public:
         SelectedFromKeyboard,
         SelectedFromElsewhere
     };
+    QWidget *topCausedWidget() const;
     QAction *actionAt(QPoint p) const;
     void setFirstActionActive();
     void setCurrentAction(QAction *, int popup = -1, SelectionReason reason = SelectedFromElsewhere, bool activateFirst = false);
diff --git a/src/gui/widgets/qmenubar.cpp b/src/gui/widgets/qmenubar.cpp
index 689d2e1..b1ff662 100644
--- a/src/gui/widgets/qmenubar.cpp
+++ b/src/gui/widgets/qmenubar.cpp
@@ -332,7 +332,9 @@ void QMenuBarPrivate::popupAction(QAction *action, bool activateFirst)
         QPoint pos(q->mapToGlobal(QPoint(adjustedActionRect.left(), adjustedActionRect.bottom() + 1)));
         QSize popup_size = activeMenu->sizeHint();
 
-        QRect screenRect = QApplication::desktop()->screenGeometry(pos);
+        //we put the popup menu on the screen containing the bottom-center of the action rect
+        QRect screenRect = QApplication::desktop()->screenGeometry(pos + QPoint(adjustedActionRect.width() / 2, 0));
+        pos = QPoint(qMax(pos.x(), screenRect.x()), qMax(pos.y(), screenRect.y()));
 
         const bool fitUp = (q->mapToGlobal(adjustedActionRect.topLeft()).y() >= popup_size.height());
         const bool fitDown = (pos.y() + popup_size.height() <= screenRect.bottom());
diff --git a/src/gui/widgets/qtoolbar.cpp b/src/gui/widgets/qtoolbar.cpp
index 5596ca4..58a3d28 100644
--- a/src/gui/widgets/qtoolbar.cpp
+++ b/src/gui/widgets/qtoolbar.cpp
@@ -396,7 +396,7 @@ bool QToolBarPrivate::mouseMoveEvent(QMouseEvent *event)
 void QToolBarPrivate::unplug(const QRect &_r)
 {
     Q_Q(QToolBar);
-    layout->setExpanded(false, false);
+    layout->setExpanded(false);
     QRect r = _r;
     r.moveTopLeft(q->mapToGlobal(QPoint(0, 0)));
     setWindowState(true, true, r);
diff --git a/src/gui/widgets/qtoolbararealayout.cpp b/src/gui/widgets/qtoolbararealayout.cpp
index de11625..b7e985c 100644
--- a/src/gui/widgets/qtoolbararealayout.cpp
+++ b/src/gui/widgets/qtoolbararealayout.cpp
@@ -480,7 +480,7 @@ void QToolBarAreaLayoutInfo::moveToolBar(QToolBar *toolbar, int pos)
 }
 
 
-QList<int> QToolBarAreaLayoutInfo::gapIndex(const QPoint &pos) const
+QList<int> QToolBarAreaLayoutInfo::gapIndex(const QPoint &pos, int *minDistance) const
 {
     int p = pick(o, pos);
 
@@ -509,12 +509,19 @@ QList<int> QToolBarAreaLayoutInfo::gapIndex(const QPoint &pos) const
 
             QList<int> result;
             result << j << k;
+            *minDistance = 0; //we found a perfect match
+            return result;
+        }
+    } else {
+        const int dist = distance(pos);
+        //it will only return a path if the minDistance is higher than the current distance
+        if (dist >= 0 && *minDistance > dist) {
+            *minDistance = dist;
+
+            QList<int> result;
+            result << lines.count() << 0;
             return result;
         }
-    } else if (appendLineDropRect().contains(pos)) {
-        QList<int> result;
-        result << lines.count() << 0;
-        return result;
     }
 
     return QList<int>();
@@ -587,32 +594,20 @@ QRect QToolBarAreaLayoutInfo::itemRect(const QList<int> &path) const
     return result;
 }
 
-QRect QToolBarAreaLayoutInfo::appendLineDropRect() const
+int QToolBarAreaLayoutInfo::distance(const QPoint &pos) const
 {
-    QRect result;
-
     switch (dockPos) {
         case QInternal::LeftDock:
-            result = QRect(rect.right(), rect.top(),
-                            EmptyDockAreaSize, rect.height());
-            break;
+            return pos.x() - rect.right();
         case QInternal::RightDock:
-            result = QRect(rect.left() - EmptyDockAreaSize, rect.top(),
-                            EmptyDockAreaSize, rect.height());
-            break;
+            return rect.left() - pos.x();
         case QInternal::TopDock:
-            result = QRect(rect.left(), rect.bottom() + 1,
-                            rect.width(), EmptyDockAreaSize);
-            break;
+            return pos.y() - rect.bottom();
         case QInternal::BottomDock:
-            result = QRect(rect.left(), rect.top() - EmptyDockAreaSize,
-                            rect.width(), EmptyDockAreaSize);
-            break;
+            return rect.top() - pos.y();
         default:
-            break;
+            return -1;
     }
-
-    return result;
 }
 
 /******************************************************************************
@@ -1022,21 +1017,24 @@ QList<int> QToolBarAreaLayout::indexOf(QWidget *toolBar) const
     return result;
 }
 
+//this functions returns the path to the possible gapindex for the position pos
 QList<int> QToolBarAreaLayout::gapIndex(const QPoint &pos) const
 {
     Qt::LayoutDirection dir = mainWindow->layoutDirection();
+    int minDistance = 80; // when a dock area is empty, how "wide" is it?
+    QList<int> ret; //return value
     for (int i = 0; i < QInternal::DockCount; ++i) {
         QPoint p = pos;
         if (docks[i].o == Qt::Horizontal)
             p = QStyle::visualPos(dir, docks[i].rect, p);
-        QList<int> result = docks[i].gapIndex(p);
+        QList<int> result = docks[i].gapIndex(p, &minDistance);
         if (!result.isEmpty()) {
             result.prepend(i);
-            return result;
+            ret = result;
         }
     }
 
-    return QList<int>();
+    return ret;
 }
 
 QList<int> QToolBarAreaLayout::currentGapIndex() const
diff --git a/src/gui/widgets/qtoolbararealayout_p.h b/src/gui/widgets/qtoolbararealayout_p.h
index 1e113b7..f0ab80c 100644
--- a/src/gui/widgets/qtoolbararealayout_p.h
+++ b/src/gui/widgets/qtoolbararealayout_p.h
@@ -155,8 +155,6 @@ public:
 class QToolBarAreaLayoutInfo
 {
 public:
-    enum { EmptyDockAreaSize = 80 }; // when a dock area is empty, how "wide" is it?
-
     QToolBarAreaLayoutInfo(QInternal::DockPosition pos = QInternal::TopDock);
 
     QList<QToolBarAreaLayoutLine> lines;
@@ -173,11 +171,11 @@ public:
     void removeToolBarBreak(QToolBar *before);
     void moveToolBar(QToolBar *toolbar, int pos); 
 
-    QList<int> gapIndex(const QPoint &pos) const;
+    QList<int> gapIndex(const QPoint &pos, int *maxDistance) const;
     bool insertGap(const QList<int> &path, QLayoutItem *item);
     void clear();
     QRect itemRect(const QList<int> &path) const;
-    QRect appendLineDropRect() const;
+    int distance(const QPoint &pos) const;
 
     QRect rect;
     Qt::Orientation o;
diff --git a/src/gui/widgets/qtoolbarlayout.cpp b/src/gui/widgets/qtoolbarlayout.cpp
index 7dc1e01..0afe5d8 100644
--- a/src/gui/widgets/qtoolbarlayout.cpp
+++ b/src/gui/widgets/qtoolbarlayout.cpp
@@ -642,7 +642,7 @@ QSize QToolBarLayout::expandedSize(const QSize &size) const
     return result;
 }
 
-void QToolBarLayout::setExpanded(bool exp, bool animated)
+void QToolBarLayout::setExpanded(bool exp)
 {
     if (exp == expanded)
         return;
@@ -654,7 +654,6 @@ void QToolBarLayout::setExpanded(bool exp, bool animated)
     if (!tb)
         return;
     if (QMainWindow *win = qobject_cast<QMainWindow*>(tb->parentWidget())) {
-        animating = true;
         QMainWindowLayout *layout = qobject_cast<QMainWindowLayout*>(win->layout());
         if (expanded) {
             tb->raise();
@@ -665,7 +664,7 @@ void QToolBarLayout::setExpanded(bool exp, bool animated)
                 layoutActions(rect.size());
             }
         }
-        layout->layoutState.toolBarAreaLayout.apply(animated);
+        layout->layoutState.toolBarAreaLayout.apply(win->isAnimated());
     }
 }
 
diff --git a/src/gui/widgets/qtoolbarlayout_p.h b/src/gui/widgets/qtoolbarlayout_p.h
index d49a5df..afd0227 100644
--- a/src/gui/widgets/qtoolbarlayout_p.h
+++ b/src/gui/widgets/qtoolbarlayout_p.h
@@ -112,7 +112,7 @@ public:
     bool hasExpandFlag() const;
 
 public Q_SLOTS:
-    void setExpanded(bool b, bool animated = true);
+    void setExpanded(bool b);
 
 private:
     QList<QToolBarItem*> items;