comparison layer/TimeValueLayer.cpp @ 11:2d5005f2b3d9

* Rework handling of layer properties in file I/O -- we now get the individual
  layers to load and save them rather than doing it via generic property lists
  in the base class, so as to ensure we read and write meaningful values rather
  than generic int values requiring conversion.

     long frame0 = startFrame + x0 * zoomLevel;
     long frame1 = startFrame + x1 * zoomLevel;
 
     SparseTimeValueModel::PointList points(m_model->getPoints
 					   (frame0, frame1));
+    if (points.empty()) return;
 
     paint.setPen(m_colour);
 
     QColor brushColour(m_colour);
     brushColour.setAlpha(80);

     return Layer::toXmlString(indent, extraAttributes +
 			      QString(" colour=\"%1\" plotStyle=\"%2\"")
 			      .arg(encodeColour(m_colour)).arg(m_plotStyle));
 }
 
+void
+TimeValueLayer::setProperties(const QXmlAttributes &attributes)
+{
+    QString colourSpec = attributes.value("colour");
+    if (colourSpec != "") {
+	QColor colour(colourSpec);
+	if (colour.isValid()) {
+	    setBaseColour(QColor(colourSpec));
+	}
+    }
+
+    bool ok;
+    PlotStyle style = (PlotStyle)
+	attributes.value("plotStyle").toInt(&ok);
+    if (ok) setPlotStyle(style);
+}
+
 
 #ifdef INCLUDE_MOCFILES
 #include "TimeValueLayer.moc.cpp"
 #endif