comparison base/Layer.h @ 78:c983dda79f72

* Replace crash with warning when a transform could not be automatically
  re-run
* More sensible default paths for Vamp plugin lookup (at least on Linux and
  OS/X)
* A start to making the y coords for time value layers etc align
* Set sensible y coords for text labels in time instant and value layers

 	return m_dormancy.find(v)->second;
     }
 
     virtual PlayParameters *getPlayParameters();
 
+    virtual bool needsTextLabelHeight() const { return false; }
+
+    virtual bool getValueExtents(float &min, float &max, QString &unit) const = 0;
+
 public slots:
     void showLayer(View *, bool show);
 
 signals:
     void modelChanged();