Cancel track rename with Escape key

include/TrackLabelButton.h

@@ -29,9 +29,10 @@
 #include <QToolButton>
 #include <QLineEdit>
 
-
 class TrackView;
 
+class TrackRenameLineEdit;
+
 
 class TrackLabelButton : public QToolButton
 {
@@ -60,7 +61,7 @@ protected:
 private:
 	TrackView * m_trackView;
 	QString m_iconName;
-	QLineEdit * m_renameLineEdit;
+	TrackRenameLineEdit * m_renameLineEdit;
 	QRect m_buttonRect;
 	QString elideName( const QString &name );
 

include/TrackRenameLineEdit.h

@@ -0,0 +1,46 @@
+/*
+ * TrackRenameLineEdit.h - class TrackRenameLineEdit
+ *
+ * Copyright (c) 2004-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2017 Alexandre Almeida <http://m374lx.users.sourceforge.net/>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * 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 (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#ifndef TRACK_RENAME_LINE_EDIT_H
+#define TRACK_RENAME_LINE_EDIT_H
+
+#include <QLineEdit>
+
+class TrackRenameLineEdit : public QLineEdit
+{
+	Q_OBJECT
+public:
+	TrackRenameLineEdit( QWidget * parent );
+	void show();
+	
+protected:
+	virtual void keyPressEvent( QKeyEvent * ke );
+	
+private:
+	QString m_oldName;
+} ;
+
+#endif