comparison layer/SpectrumLayer.h @ 260:6d113226bb4c

* a bit more work on measurement tool mode
* use arrow cursors on thumbwheels and panner in pane HUD

     virtual void setProperties(const QXmlAttributes &);
 
     virtual bool getValueExtents(float &min, float &max,
                                  bool &logarithmic, QString &unit) const;
 
+    virtual bool getXScaleValue(View *v, int x,
+                                float &value, QString &unit) const;
+
     virtual bool isLayerScrollable(const View *) const { return false; }
 
     void setChannel(int);
     int getChannel() const { return m_channel; }