From 040ee80219083b0662ba34c7bf5a420cd8b645db Mon Sep 17 00:00:00 2001
From: Eirik Aavitsland <eirik.aavitsland@qt.io>
Date: Mon, 8 Nov 2021 15:42:45 +0100
Subject: Avoid painting outside boundaries when printing QGraphicsProxyWidget
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Implement clipping to widget geometry when rendering to other
paintdevices.

Fixes: QTBUG-98026
Change-Id: I5652bdb8cc052ae34f05ea7963943d2b5b28e220
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
(cherry picked from commit 1a984b3d2dde484d105d19265bc516ba18da2894)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/widgets/graphicsview/qgraphicsproxywidget.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/widgets/graphicsview/qgraphicsproxywidget.cpp b/src/widgets/graphicsview/qgraphicsproxywidget.cpp
index e6ce275bef..7b381367c3 100644
--- a/src/widgets/graphicsview/qgraphicsproxywidget.cpp
+++ b/src/widgets/graphicsview/qgraphicsproxywidget.cpp
@@ -1576,6 +1576,10 @@ void QGraphicsProxyWidget::paint(QPainter *painter, const QStyleOptionGraphicsIt
     if (exposedWidgetRect.isEmpty())
         return;
 
+    // When rendering to pdf etc. painting may go outside widget boundaries unless clipped
+    if (painter->device()->devType() != QInternal::Widget && (flags() & ItemClipsChildrenToShape))
+        painter->setClipRect(d->widget->geometry(), Qt::IntersectClip);
+
     d->widget->render(painter, exposedWidgetRect.topLeft(), exposedWidgetRect);
 }
 
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