From 1ad823377a8f445f3ad4751a8c69eb43a41f4c07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Gr=C3=A4=C3=9Flin?= <mgraesslin@kde.org>
Date: Fri, 23 May 2014 20:39:21 +0200
Subject: [PATCH] Fix clipping of ThumbnailItem to parent item

The clip region was incorrectly calculated as the mapToScene was applied
to the wrong item.

BUG: 335246
---
 scene.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scene.cpp b/scene.cpp
index 7ca6b894aa..c47b6e043c 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -492,8 +492,10 @@ static void adjustClipRegion(AbstractThumbnailItem *item, QRegion &clippingRegio
                 offset.setY(anchorsObject->property("topMargin").toReal());
             }
         }
-        const QRectF rect = parentItem->mapRectToScene(QRectF(parentItem->position() - offset,
-                                                                QSizeF(parentItem->width(), parentItem->height())));
+        QRectF rect = QRectF(parentItem->position() - offset, QSizeF(parentItem->width(), parentItem->height()));
+        if (QQuickItem *p = parentItem->parentItem()) {
+            rect = p->mapRectToScene(rect);
+        }
         clippingRegion &= rect.adjusted(0,0,-1,-1).translated(item->window()->position()).toRect();
     }
 }