Fix a painter warning

when using a treewidget with animations in a splitter and the tree is
collapsed, and then select an item in the tree that requires expanding,
it might end up trying to paint to an invalid pixmap

Reviewed-by: Gabi

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
index bcf9cfb..bf88a75 100644
--- a/src/gui/itemviews/qtreeview.cpp
+++ b/src/gui/itemviews/qtreeview.cpp
@@ -3064,6 +3064,8 @@ QPixmap QTreeViewPrivate::renderTreeToPixmapForAnimation(const QRect &rect) cons
 {
     Q_Q(const QTreeView);
     QPixmap pixmap(rect.size());
+    if (rect.size().isEmpty())
+        return pixmap;
     pixmap.fill(Qt::transparent); //the base might not be opaque, and we don't want uninitialized pixels.
     QPainter painter(&pixmap);
     painter.fillRect(QRect(QPoint(0,0), rect.size()), q->palette().base());