added a ruler for measuring

added support for meta-data editing
improved element selection
changed zooming
fixed some issues with layer events
fixed issue with 3D outline
fixed loading issue for old maps
some interface changes

params/MetaEditWidget.h

@@ -0,0 +1,35 @@
+#ifndef METAEDITWIDGET_H
+#define METAEDITWIDGET_H
+
+#include <QWidget>
+#include <Indoor/floorplan/v2/Floorplan.h>
+
+class MetaEditModel;
+class QTableView;
+
+/**
+ * helper class to edit the Floorplan::Meta
+ * key value attribute
+ */
+class MetaEditWidget : public QWidget {
+
+	Q_OBJECT
+
+private:
+
+	Floorplan::Meta* metaOrig;
+	Floorplan::Meta metaCopy;	// used for the abort button
+
+	MetaEditModel* model;
+
+	QTableView* tbl;
+
+public:
+
+	MetaEditWidget(Floorplan::Meta* meta);
+
+	void keyPressEvent(QKeyEvent* e);
+
+};
+
+#endif // METAEDITWIDGET_H