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

@@ -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);

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();