From b363df741e025a17aa23be5a29124473d356ee19 Mon Sep 17 00:00:00 2001
From: Giulio Camuffo <giuliocamuffo@gmail.com>
Date: Wed, 23 Sep 2009 20:29:56 +0000
Subject: [PATCH] using installEventFilter if the target is a QGraphicsWidget,
 else installSceneEventFilter because sceneEventFilter doesn't get
 GraphicsSceneResize events

svn path=/trunk/KDE/kdelibs/; revision=1027316
---
 widgets/itembackground.cpp | 24 ++++++++++++++++++------
 widgets/itembackground.h   |  5 +++++
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/widgets/itembackground.cpp b/widgets/itembackground.cpp
index 1afa630ba..4593ddf97 100644
--- a/widgets/itembackground.cpp
+++ b/widgets/itembackground.cpp
@@ -124,12 +124,12 @@ void ItemBackground::setTarget(const QRectF &newGeometry)
 void ItemBackground::setTargetItem(QGraphicsItem *target)
 {
     if (d->target && d->target != target) {
-        d->target->removeSceneEventFilter(this);
-
         QObject *obj = 0;
         if (d->target->isWidget()) {
             obj = static_cast<QGraphicsWidget*>(d->target);
+            obj->removeEventFilter(this);
         } else {
+            d->target->removeSceneEventFilter(this);
             obj = dynamic_cast<QObject *>(d->target);
         }
 
@@ -147,12 +147,12 @@ void ItemBackground::setTargetItem(QGraphicsItem *target)
         setTarget(rect);
 
         if (d->target != target) {
-            target->installSceneEventFilter(this);
-
             QObject *obj = 0;
             if (target->isWidget()) {
                 obj = static_cast<QGraphicsWidget*>(target);
+                obj->installEventFilter(this);
             } else {
+                d->target->installSceneEventFilter(this);
                 obj = dynamic_cast<QObject *>(target);
             }
 
@@ -165,11 +165,23 @@ void ItemBackground::setTargetItem(QGraphicsItem *target)
     }
 }
 
+bool ItemBackground::eventFilter(QObject *watched, QEvent *event)
+{
+    QGraphicsWidget *targetWidget = static_cast<QGraphicsWidget *>(d->target);
+    if (watched == targetWidget) {
+        if (event->type() == QEvent::GraphicsSceneResize ||
+            event->type() == QEvent::GraphicsSceneMove) {
+            setTargetItem(targetWidget);
+        }
+    }
+
+    return false;
+}
+
 bool ItemBackground::sceneEventFilter(QGraphicsItem *watched, QEvent *event)
 {
     if (watched == d->target) {
-        if (event->type() == QEvent::GraphicsSceneResize ||
-            event->type() == QEvent::GraphicsSceneMove) {
+        if (event->type() == QEvent::GraphicsSceneMove) {
             setTargetItem(d->target);
         }
     }
diff --git a/widgets/itembackground.h b/widgets/itembackground.h
index 35af9511a..8ff06377b 100644
--- a/widgets/itembackground.h
+++ b/widgets/itembackground.h
@@ -74,6 +74,11 @@ protected:
      */
     QVariant itemChange(GraphicsItemChange change, const QVariant &value);
 
+    /**
+     * @reimp from QObject
+     */
+    bool eventFilter(QObject *watched, QEvent *event);
+
     /**
      * @reimp from QGraphicsItem
      */