From 84f2fad73e7cacf9c5c0c604c0e9e1664e20f446 Mon Sep 17 00:00:00 2001
From: Percy Leonhardt <percy@eris23.de>
Date: Sun, 6 Jan 2008 12:49:32 +0000
Subject: [PATCH] The signalplotter needs to know when it is resized. Otherwise
 the plots are too short for the current width.

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=757903
---
 widgets/signalplotter.cpp | 7 +++++++
 widgets/signalplotter.h   | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/widgets/signalplotter.cpp b/widgets/signalplotter.cpp
index 546824a08..8ee49702f 100644
--- a/widgets/signalplotter.cpp
+++ b/widgets/signalplotter.cpp
@@ -516,6 +516,13 @@ QPixmap SignalPlotter::getSnapshotImage(uint w, uint height)
     return image;
 }
 
+void SignalPlotter::setGeometry(const QRectF &geometry)
+{
+    // First update our size, then update the data buffers accordingly.
+    Widget::setGeometry(geometry);
+    updateDataBuffers();
+}
+
 void SignalPlotter::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
     Q_UNUSED(option);
diff --git a/widgets/signalplotter.h b/widgets/signalplotter.h
index bc1b17c0a..ca255b292 100644
--- a/widgets/signalplotter.h
+++ b/widgets/signalplotter.h
@@ -410,6 +410,12 @@ public:
      */
     QPixmap getSnapshotImage(uint width, uint height);
 
+    /**
+     * Overwritten to be notified of size changes. Needed to update the
+     * data buffers that are used to store the samples.
+     */
+    virtual void setGeometry(const QRectF &geometry);
+
 protected:
     void updateDataBuffers();
     void calculateNiceRange();