From feea867bd3ce0c9943890295551eb9f10f867e90 Mon Sep 17 00:00:00 2001
From: "Aaron J. Seigo" <aseigo@kde.org>
Date: Mon, 31 Aug 2009 12:14:47 +0000
Subject: [PATCH] make it possible to do contntx resct syncing

svn path=/trunk/KDE/kdelibs/; revision=1017768
---
 widgets/itembackground.cpp | 23 +++++++++++++++++++++--
 widgets/itembackground.h   |  9 +++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/widgets/itembackground.cpp b/widgets/itembackground.cpp
index 26c64e60d..c3fb997d2 100644
--- a/widgets/itembackground.cpp
+++ b/widgets/itembackground.cpp
@@ -40,8 +40,9 @@ public:
 
     void animationUpdate(qreal progress);
     void targetDestroyed(QObject*);
+    void frameSvgChanged();
 
-    ItemBackground *q;
+    ItemBackground * const q;
     QGraphicsItem *target;
     Plasma::FrameSvg *frameSvg;
     QRectF oldGeometry;
@@ -57,18 +58,26 @@ ItemBackground::ItemBackground(QGraphicsWidget *parent)
     : QGraphicsWidget(parent),
       d(new ItemBackgroundPrivate(this))
 {
+    setCacheMode(DeviceCoordinateCache);
+    setFlag(ItemIsMovable, false);
+    setFlag(ItemIsSelectable, false);
+    setFlag(ItemIsFocusable, false);
+
     d->frameSvg = new Plasma::FrameSvg(this);
     d->animId = 0;
     d->opacity = 1;
     d->fading = false;
     d->fadeIn = false;
     d->immediate = false;
-    setContentsMargins(0, 0, 0, 0);
+    qreal l, t, r, b;
+    d->frameSvg->getMargins(l, t, r, b);
+    setContentsMargins(l, t, r, b);
 
     d->frameSvg->setImagePath("widgets/viewitem");
     d->frameSvg->setEnabledBorders(Plasma::FrameSvg::AllBorders);
     d->frameSvg->setCacheAllRenderedFrames(true);
     d->frameSvg->setElementPrefix("hover");
+    connect(d->frameSvg, SIGNAL(repaintNeeded()), this, SLOT(frameSvgChanged()));
 
     setAcceptedMouseButtons(0);
     setZValue(-800);
@@ -240,8 +249,18 @@ void ItemBackgroundPrivate::targetDestroyed(QObject*)
     q->setTargetItem(0);
 }
 
+void ItemBackgroundPrivate::frameSvgChanged()
+{
+    qreal l, t, r, b;
+    frameSvg->getMargins(l, t, r, b);
+    q->setContentsMargins(l, t, r, b);
+    q->update();
+    emit q->appearanceChanged();
 }
 
+} // Plasma namespace
+
+
 #include "itembackground.moc"
 
 
diff --git a/widgets/itembackground.h b/widgets/itembackground.h
index 1f83345b1..35af9511a 100644
--- a/widgets/itembackground.h
+++ b/widgets/itembackground.h
@@ -61,6 +61,13 @@ public:
      */
     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
 
+Q_SIGNALS:
+    /**
+     * Emitted when the visual layout and appearance changes. Useful for syncronizing
+     * content margins.
+     */
+    void appearanceChanged();
+
 protected:
     /**
      * @reimp from QGraphicsWidget
@@ -80,7 +87,9 @@ protected:
 private:
     Q_PRIVATE_SLOT(d, void animationUpdate(qreal progress))
     Q_PRIVATE_SLOT(d, void targetDestroyed(QObject*))
+    Q_PRIVATE_SLOT(d, void frameSvgChanged())
 
+    friend class ItemBackgroundPrivate;
     ItemBackgroundPrivate * const d;
 };
 }