From 659844e273d523101c23690b528029fcbcfed0e1 Mon Sep 17 00:00:00 2001
From: "Aaron J. Seigo" <aseigo@kde.org>
Date: Mon, 16 Jun 2008 19:10:38 +0000
Subject: [PATCH] use the caching (!), don't crash if we get a 0 widget
 parameter

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=821186
---
 applet.cpp      | 4 ++--
 containment.cpp | 6 ++++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/applet.cpp b/applet.cpp
index 9af7afa39..2c0bb87b3 100644
--- a/applet.cpp
+++ b/applet.cpp
@@ -842,7 +842,7 @@ void Applet::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QW
     //FIXME: we should probably set the pixmap to screenSize(), but that breaks stuff atm.
     QPixmap pixmap(boundingRect().size().toSize());
 
-    QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget->parent());
+    QGraphicsView* qgv = qobject_cast<QGraphicsView*>(widget ? widget->parent() : 0);
     bool ghost = (qgv && (qgv == d->ghostView));
 
     if (ghost) {
@@ -1120,7 +1120,6 @@ void Applet::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 
             parent->setPos(parent->pos() + delta);
         }
-
     }
 }
 
@@ -1524,6 +1523,7 @@ void Applet::Private::init()
 {
     // WARNING: do not access config() OR globalConfig() in this method!
     //          that requires a scene, which is not available at this point
+    q->setCacheMode(DeviceCoordinateCache);
     q->setAcceptsHoverEvents(true);
     q->setFlag(QGraphicsItem::ItemIsFocusable, true);
     // FIXME: adding here because nothing seems to be doing it in QGraphicsView,
diff --git a/containment.cpp b/containment.cpp
index 5c5531a09..b956dbbdf 100644
--- a/containment.cpp
+++ b/containment.cpp
@@ -104,8 +104,10 @@ Containment::~Containment()
 
 void Containment::init()
 {
-    setCacheMode(NoCache);
-    setFlag(QGraphicsItem::ItemIsMovable, false);
+    if (isContainment()) {
+        setCacheMode(NoCache);
+        setFlag(QGraphicsItem::ItemIsMovable, false);
+    }
     setFlag(QGraphicsItem::ItemClipsChildrenToShape, false);
     setAcceptDrops(true);
     setAcceptsHoverEvents(true);