1 files changed, 37 insertions, 2 deletions

diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index 7cb0979c06..869362654c 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -245,6 +245,9 @@ QWidgetPrivate::QWidgetPrivate(int version)
 #if !defined(QT_NO_IM)
       , imHints(Qt::ImhNone)
 #endif
+#ifndef QT_NO_TOOLTIP
+      , toolTipDuration(-1)
+#endif
       , inheritedFontResolveMask(0)
       , inheritedPaletteResolveMask(0)
       , leftmargin(0)
@@ -261,6 +264,7 @@ QWidgetPrivate::QWidgetPrivate(int version)
       , bg_role(QPalette::NoRole)
       , dirtyOpaqueChildren(1)
       , isOpaque(0)
+      , retainSizeWhenHiddenChanged(0)
       , inDirtyList(0)
       , isScrolled(0)
       , isMoved(0)
@@ -8207,7 +8211,7 @@ bool QWidget::event(QEvent *event)
 #ifndef QT_NO_TOOLTIP
     case QEvent::ToolTip:
         if (!d->toolTip.isEmpty())
-            QToolTip::showText(static_cast<QHelpEvent*>(event)->globalPos(), d->toolTip, this);
+            QToolTip::showText(static_cast<QHelpEvent*>(event)->globalPos(), d->toolTip, this, QRect(), d->toolTipDuration);
         else
             event->ignore();
         break;
@@ -9251,6 +9255,10 @@ void QWidget::setSizePolicy(QSizePolicy policy)
     setAttribute(Qt::WA_WState_OwnSizePolicy);
     if (policy == d->size_policy)
         return;
+
+    if (d->size_policy.retainSizeWhenHidden() != policy.retainSizeWhenHidden())
+        d->retainSizeWhenHiddenChanged = 1;
+
     d->size_policy = policy;
 
 #ifndef QT_NO_GRAPHICSVIEW
@@ -9261,6 +9269,7 @@ void QWidget::setSizePolicy(QSizePolicy policy)
 #endif
 
     updateGeometry();
+    d->retainSizeWhenHiddenChanged = 0;
 
     if (isWindow() && d->maybeTopData())
         d->topData()->sizeAdjusted = false;
@@ -9389,7 +9398,9 @@ void QWidgetPrivate::updateGeometry_helper(bool forceUpdate)
         widgetItem->invalidateSizeCache();
     QWidget *parent;
     if (forceUpdate || !extra || extra->minw != extra->maxw || extra->minh != extra->maxh) {
-        if (!q->isWindow() && !q->isHidden() && (parent = q->parentWidget())) {
+        const int isHidden = q->isHidden() && !size_policy.retainSizeWhenHidden() && !retainSizeWhenHiddenChanged;
+
+        if (!q->isWindow() && !isHidden && (parent = q->parentWidget())) {
             if (parent->d_func()->layout)
                 parent->d_func()->layout->invalidate();
             else if (parent->isVisible())
@@ -10426,6 +10437,30 @@ QString QWidget::toolTip() const
     Q_D(const QWidget);
     return d->toolTip;
 }
+
+/*!
+  \property QWidget::toolTipDuration
+  \brief the widget's tooltip duration
+  \since 5.2
+
+  Specifies how long time the tooltip will be displayed, in milliseconds.
+  If the value is -1 (default) the duration is calculated depending on the length of the tooltip.
+
+  \sa toolTip
+*/
+
+void QWidget::setToolTipDuration(int msec)
+{
+    Q_D(QWidget);
+    d->toolTipDuration = msec;
+}
+
+int QWidget::toolTipDuration() const
+{
+    Q_D(const QWidget);
+    return d->toolTipDuration;
+}
+
 #endif // QT_NO_TOOLTIP