comparison layer/SpectrumLayer.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/Pitch.h"
 #include "base/ColourMapper.h"
 
 #include <QPainter>
+#include <QTextStream>
+
 
 SpectrumLayer::SpectrumLayer() :
     m_originModel(0),
     m_channel(-1),
     m_channelSet(false),

 SpectrumLayer::getBiasCurve(BiasCurve &curve) const
 {
     curve = m_biasCurve;
 }
 
-QString
-SpectrumLayer::toXmlString(QString indent, QString extraAttributes) const
-{
-    QString s;
-    
-    s += QString("windowSize=\"%1\" "
-		 "windowHopLevel=\"%2\"")
+void
+SpectrumLayer::toXml(QTextStream &stream,
+                     QString indent, QString extraAttributes) const
+{
+    QString s = QString("windowSize=\"%1\" "
+                        "windowHopLevel=\"%2\"")
         .arg(m_windowSize)
         .arg(m_windowHopLevel);
 
-    return SliceLayer::toXmlString(indent, extraAttributes + " " + s);
+    SliceLayer::toXml(stream, indent, extraAttributes + " " + s);
 }
 
 void
 SpectrumLayer::setProperties(const QXmlAttributes &attributes)
 {