2021-02-09 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDEmptyCart' widget.
	* Removed 'RD3EmptyCart' dependency from rdairplay(1).
	* Removed 'RD3EmptyCart' dependency from rdlogmanager(1).
	* Removed 'RD3EmptyCart' dependency from rdpanel(1).
	* Removed the 'RD3EmptyCart' widget.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>

lib/rdemptycart.h

@@ -0,0 +1,47 @@
+// rdemptycart.h
+//
+// A drag source for an empty cart.
+//
+//   (C) Copyright 2013-2021 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   This program is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU General Public License for more details.
+//
+//   You should have received a copy of the GNU General Public
+//   License along with this program; if not, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+
+#ifndef RDEMPTYCART_H
+#define RDEMPTYCART_H
+
+#include <QLabel>
+#include <QMouseEvent>
+#include <QWidget>
+
+#include <rdcartdrag.h>
+
+class RDEmptyCart : public QWidget
+{
+  Q_OBJECT
+ public:
+  RDEmptyCart(QWidget *parent=0);
+  ~RDEmptyCart();
+  QSize sizeHint() const;
+  QSizePolicy sizePolicy() const;
+
+ protected:
+  void mousePressEvent(QMouseEvent *e);
+
+ private:
+  QLabel *empty_label;
+};
+
+
+#endif  // RDEMPTYCART_H