comparison layer/Colour3DPlotLayer.h @ 316:c0b9eec70639

* Make XmlExportable::toXml the function that is universally overridden (and
  pure virtual) instead of toXmlString.  Tidies up some classes, notably the
  model classes, significantly.  Closes #1794561.

     void setNormalizeVisibleArea(bool n);
     bool getNormalizeVisibleArea() const;
 
     virtual const Model *getSliceableModel() const { return m_model; }
 
-    virtual QString toXmlString(QString indent = "",
-				QString extraAttributes = "") const;
+    virtual void toXml(QTextStream &stream, QString indent = "",
+                       QString extraAttributes = "") const;
 
 protected slots:
     void cacheInvalid();
     void cacheInvalid(size_t startFrame, size_t endFrame);