Handle Orux maps as directories

(there can not be two Orux maps in the same directory)

src/map/oruxmap.cpp

@@ -206,7 +206,7 @@ void OruxMap::calibrationPoints(QXmlStreamReader &reader, const QSize &size,
 void OruxMap::mapCalibration(QXmlStreamReader &reader, int level)
 {
 	int zoom;
-	QSize tileSize, size;
+	QSize tileSize, size, calibrationSize;
 	QString datum, projection;
 	QList<CalibrationPoint> points;
 	Projection proj;
@@ -241,6 +241,8 @@ void OruxMap::mapCalibration(QXmlStreamReader &reader, int level)
 
 			tileSize = QSize(width, height);
 			size = QSize(xMax * width, yMax * height);
+			calibrationSize = size;
+
 			GCS gcs(createGCS(datum));
 			if (!gcs.isValid()) {
 				reader.raiseError(QString("%1: invalid/unknown datum")
@@ -254,9 +256,22 @@ void OruxMap::mapCalibration(QXmlStreamReader &reader, int level)
 				return;
 			}
 
+			reader.readElementText();
+
+		} else if (reader.name() == QLatin1String("MapDimensions")) {
+			int height, width;
+
+			QXmlStreamAttributes attr = reader.attributes();
+			if (!intAttr(reader, attr, "height", height))
+				return;
+			if (!intAttr(reader, attr, "width", width))
+				return;
+
+			calibrationSize = QSize(width, height);
+
 			reader.readElementText();
 		} else if (reader.name() == QLatin1String("CalibrationPoints"))
-			calibrationPoints(reader, size, points);
+			calibrationPoints(reader, calibrationSize, points);
 		else
 			reader.skipCurrentElement();
 	}
@@ -467,7 +482,7 @@ Coordinates OruxMap::xy2ll(const QPointF &p)
 Map *OruxMap::create(const QString &path, const Projection &, bool *isDir)
 {
 	if (isDir)
-		*isDir = false;
+		*isDir = true;
 
 	return new OruxMap(path);
 }