3 files changed, 39 insertions, 2 deletions
diff --git a/src/gui/itemviews/qabstractitemview.cpp b/src/gui/itemviews/qabstractitemview.cpp
index 9d977a5..757ded9 100644
--- a/src/gui/itemviews/qabstractitemview.cpp
+++ b/src/gui/itemviews/qabstractitemview.cpp
@@ -69,6 +69,7 @@ QAbstractItemViewPrivate::QAbstractItemViewPrivate()
     :   model(QAbstractItemModelPrivate::staticEmptyModel()),
         itemDelegate(0),
         selectionModel(0),
+        ctrlDragSelectionFlag(QItemSelectionModel::NoUpdate),
         selectionMode(QAbstractItemView::ExtendedSelection),
         selectionBehavior(QAbstractItemView::SelectItems),
         currentlyCommittingEditor(0),
@@ -1589,6 +1590,11 @@ void QAbstractItemView::mousePressEvent(QMouseEvent *event)
         d->selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
         d->autoScroll = autoScroll;
         QRect rect(d->pressedPosition - offset, pos);
+        if (command.testFlag(QItemSelectionModel::Toggle)) {
+            command &= ~QItemSelectionModel::Toggle;
+            d->ctrlDragSelectionFlag = d->selectionModel->isSelected(index) ? QItemSelectionModel::Deselect : QItemSelectionModel::Select;
+            command |= d->ctrlDragSelectionFlag;
+        }
         setSelection(rect, command);
 
         // signal handlers may change the model
@@ -1659,6 +1665,10 @@ void QAbstractItemView::mouseMoveEvent(QMouseEvent *event)
     if ((event->buttons() & Qt::LeftButton) && d->selectionAllowed(index) && d->selectionModel) {
         setState(DragSelectingState);
         QItemSelectionModel::SelectionFlags command = selectionCommand(index, event);
+        if (command.testFlag(QItemSelectionModel::Toggle)) {
+            command &= ~QItemSelectionModel::Toggle;
+            command |= d->ctrlDragSelectionFlag;
+        }
 
         // Do the normalize ourselves, since QRect::normalized() is flawed
         QRect selectionRect = QRect(topLeft, bottomRight);
@@ -1699,6 +1709,8 @@ void QAbstractItemView::mouseReleaseEvent(QMouseEvent *event)
     EditTrigger trigger = (selectedClicked ? SelectedClicked : NoEditTriggers);
     bool edited = edit(index, trigger, event);
 
+    d->ctrlDragSelectionFlag = QItemSelectionModel::NoUpdate;
+
     //in the case the user presses on no item we might decide to clear the selection
     if (d->selectionModel && !index.isValid())
         d->selectionModel->select(QModelIndex(), selectionCommand(index, event));
diff --git a/src/gui/itemviews/qabstractitemview_p.h b/src/gui/itemviews/qabstractitemview_p.h
index 725d0a9..6b1ec8e 100644
--- a/src/gui/itemviews/qabstractitemview_p.h
+++ b/src/gui/itemviews/qabstractitemview_p.h
@@ -342,6 +342,7 @@ public:
     QMap<int, QPointer<QAbstractItemDelegate> > rowDelegates;
     QMap<int, QPointer<QAbstractItemDelegate> > columnDelegates;
     QPointer<QItemSelectionModel> selectionModel;
+    QItemSelectionModel::SelectionFlag ctrlDragSelectionFlag;
 
     QAbstractItemView::SelectionMode selectionMode;
     QAbstractItemView::SelectionBehavior selectionBehavior;
diff --git a/src/gui/itemviews/qtableview.cpp b/src/gui/itemviews/qtableview.cpp
index 684da3f..f1ffaa6 100644
--- a/src/gui/itemviews/qtableview.cpp
+++ b/src/gui/itemviews/qtableview.cpp
@@ -2519,9 +2519,21 @@ void QTableViewPrivate::selectRow(int row, bool anchor)
         QModelIndex index = model->index(row, column, root);
         QItemSelectionModel::SelectionFlags command = q->selectionCommand(index);
         selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
-        if ((!(command & QItemSelectionModel::Current) && anchor)
+        if ((anchor && !(command & QItemSelectionModel::Current))
             || (q->selectionMode() == QTableView::SingleSelection))
             rowSectionAnchor = row;
+
+        if (q->selectionMode() != QTableView::SingleSelection
+            && command.testFlag(QItemSelectionModel::Toggle)) {
+            if (anchor)
+                ctrlDragSelectionFlag = verticalHeader->selectionModel()->selectedRows().contains(index)
+                                    ? QItemSelectionModel::Deselect : QItemSelectionModel::Select;
+            command &= ~QItemSelectionModel::Toggle;
+            command |= ctrlDragSelectionFlag;
+            if (!anchor)
+                command |= QItemSelectionModel::Current;
+        }
+
         QModelIndex tl = model->index(qMin(rowSectionAnchor, row), 0, root);
         QModelIndex br = model->index(qMax(rowSectionAnchor, row), model->columnCount(root) - 1, root);
         if (verticalHeader->sectionsMoved() && tl.row() != br.row())
@@ -2545,9 +2557,21 @@ void QTableViewPrivate::selectColumn(int column, bool anchor)
         QModelIndex index = model->index(row, column, root);
         QItemSelectionModel::SelectionFlags command = q->selectionCommand(index);
         selectionModel->setCurrentIndex(index, QItemSelectionModel::NoUpdate);
-        if ((!(command & QItemSelectionModel::Current) && anchor)
+        if ((anchor && !(command & QItemSelectionModel::Current))
             || (q->selectionMode() == QTableView::SingleSelection))
             columnSectionAnchor = column;
+
+        if (q->selectionMode() != QTableView::SingleSelection
+            && command.testFlag(QItemSelectionModel::Toggle)) {
+            if (anchor)
+                ctrlDragSelectionFlag = horizontalHeader->selectionModel()->selectedColumns().contains(index)
+                                    ? QItemSelectionModel::Deselect : QItemSelectionModel::Select;
+            command &= ~QItemSelectionModel::Toggle;
+            command |= ctrlDragSelectionFlag;
+            if (!anchor)
+                command |= QItemSelectionModel::Current;
+        }
+
         QModelIndex tl = model->index(0, qMin(columnSectionAnchor, column), root);
         QModelIndex br = model->index(model->rowCount(root) - 1,
                                       qMax(columnSectionAnchor, column), root);