3 files changed, 12 insertions, 4 deletions
diff --git a/src/gui/itemviews/qitemselectionmodel.cpp b/src/gui/itemviews/qitemselectionmodel.cpp
index c6e02a6..2e4a602 100644
--- a/src/gui/itemviews/qitemselectionmodel.cpp
+++ b/src/gui/itemviews/qitemselectionmodel.cpp
@@ -730,13 +730,14 @@ void QItemSelectionModelPrivate::_q_layoutAboutToBeChanged()
     savedPersistentIndexes.clear();
     savedPersistentCurrentIndexes.clear();
 
-    // special case for when all indexes are selected
+    // optimisation for when all indexes are selected
+    // (only if there is lots of items (1000) because this is not entirely correct)
     if (ranges.isEmpty() && currentSelection.count() == 1) {
         QItemSelectionRange range = currentSelection.first();
         QModelIndex parent = range.parent();
         tableRowCount = model->rowCount(parent);
         tableColCount = model->columnCount(parent);
-        if (tableRowCount * tableColCount > 100
+        if (tableRowCount * tableColCount > 1000
             && range.top() == 0
             && range.left() == 0
             && range.bottom() == tableRowCount - 1
diff --git a/src/gui/itemviews/qtablewidget.cpp b/src/gui/itemviews/qtablewidget.cpp
index 21c4e0a..d9b8346 100644
--- a/src/gui/itemviews/qtablewidget.cpp
+++ b/src/gui/itemviews/qtablewidget.cpp
@@ -2458,7 +2458,7 @@ const QTableWidgetItem *QTableWidget::itemPrototype() const
 
     The table widget will use the item prototype clone function when it needs
     to create a new table item.  For example when the user is editing
-    editing in an empty cell.  This is useful when you have a QTableWidgetItem
+    in an empty cell.  This is useful when you have a QTableWidgetItem
     subclass and want to make sure that QTableWidget creates instances of
     your subclass.
 
diff --git a/src/gui/itemviews/qtreewidget.cpp b/src/gui/itemviews/qtreewidget.cpp
index 040c498..c133ae4 100644
--- a/src/gui/itemviews/qtreewidget.cpp
+++ b/src/gui/itemviews/qtreewidget.cpp
@@ -2851,7 +2851,14 @@ QTreeWidgetItem *QTreeWidget::itemAt(const QPoint &p) const
 QRect QTreeWidget::visualItemRect(const QTreeWidgetItem *item) const
 {
     Q_D(const QTreeWidget);
-    return visualRect(d->index(item));
+    //the visual rect for an item is across all columns. So we need to determine
+	//what is the first and last column and get their visual index rects
+    QModelIndex base = d->index(item);
+    const int firstVisiblesection = header()->logicalIndexAt(- header()->offset());
+    const int lastVisibleSection = header()->logicalIndexAt(header()->length() - header()->offset() - 1);
+    QModelIndex first = base.sibling(base.row(), header()->logicalIndex(firstVisiblesection));
+    QModelIndex last = base.sibling(base.row(), header()->logicalIndex(lastVisibleSection));
+    return visualRect(first) | visualRect(last);
 }
 
 /*!