From 7048a89fa1769abcd836a9b606b53cb88747cac8 Mon Sep 17 00:00:00 2001
From: Michael Winkelmann <michael.winkelmann@qt.io>
Date: Mon, 30 Nov 2020 16:29:02 +0100
Subject: [PATCH] FormEditor: Return correct bounding rect for rendered
 QPicture

The bounding rect is calculated by union of all child item boundings rect
of all FormEditorItems.

Change-Id: I908e9d08b581671436bc7334b3b7eb0a5cd25aa8
Reviewed-by: Marco Bubke <marco.bubke@qt.io>
---
 .../qmldesigner/components/formeditor/formeditorwidget.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp b/src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp
index e858ae56376..63c7e05d603 100644
--- a/src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp
+++ b/src/plugins/qmldesigner/components/formeditor/formeditorwidget.cpp
@@ -512,8 +512,13 @@ QPicture FormEditorWidget::renderToPicture() const
     QPainter painter{&picture};
 
     const QTransform viewportTransform = m_graphicsView->viewportTransform();
-    const QRectF boundingRect = rootItemRect();
+    auto items = m_formEditorView->scene()->allFormEditorItems();
 
+    QRectF boundingRect;
+    for (auto &item : items)
+        boundingRect |= item->childrenBoundingRect();
+
+    picture.setBoundingRect(boundingRect.toRect());
     m_graphicsView->render(&painter, boundingRect, viewportTransform.mapRect(boundingRect.toRect()));
 
     return picture;