comparison layer/WaveformLayer.cpp @ 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.

 #include "base/RangeMapper.h"
 #include "base/ColourDatabase.h"
 
 #include <QPainter>
 #include <QPixmap>
+#include <QTextStream>
 
 #include <iostream>
 #include <cmath>
 
 //#define DEBUG_WAVEFORM_PAINT 1

             }
 	}
     }
 }
 
-QString
-WaveformLayer::toXmlString(QString indent, QString extraAttributes) const
+void
+WaveformLayer::toXml(QTextStream &stream,
+                     QString indent, QString extraAttributes) const
 {
     QString s;
     
     QString colourName, colourSpec, darkbg;
     ColourDatabase::getInstance()->getStringValues

 	.arg(m_channel)
 	.arg(m_scale)
 	.arg(m_aggressive)
         .arg(m_autoNormalize);
 
-    return SingleColourLayer::toXmlString(indent, extraAttributes + " " + s);
+    SingleColourLayer::toXml(stream, indent, extraAttributes + " " + s);
 }
 
 void
 WaveformLayer::setProperties(const QXmlAttributes &attributes)
 {