comparison layer/SingleColourLayer.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/ColourDatabase.h"
 #include "view/View.h"
 
 #include <iostream>
 
+#include <QTextStream>
 #include <QApplication>
 
 SingleColourLayer::ColourRefCount 
 SingleColourLayer::m_colourRefCount;
 

         s.push_back(QColor(red, green, blue));
     }
     return s;
 }
 
-QString
-SingleColourLayer::toXmlString(QString indent, QString extraAttributes) const
+void
+SingleColourLayer::toXml(QTextStream &stream,
+                         QString indent, QString extraAttributes) const
 {
     QString s;
     
     QString colourName, colourSpec, darkbg;
     ColourDatabase::getInstance()->getStringValues

                  "darkBackground=\"%3\" ")
 	.arg(colourName)
         .arg(colourSpec)
         .arg(darkbg);
 
-    return Layer::toXmlString(indent, extraAttributes + " " + s);
+    Layer::toXml(stream, indent, extraAttributes + " " + s);
 }
 
 void
 SingleColourLayer::setProperties(const QXmlAttributes &attributes)
 {