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

src/gui/CMakeLists.txt

@@ -85,6 +85,7 @@ SET(LMMS_SRCS
 	gui/widgets/ToolButton.cpp
 	gui/widgets/ToolTip.cpp
 	gui/widgets/TrackLabelButton.cpp
+	gui/widgets/TrackRenameLineEdit.cpp
 	gui/widgets/VisualizationWidget.cpp
 
 	PARENT_SCOPE

src/gui/widgets/TrackLabelButton.cpp

@@ -36,6 +36,7 @@
 #include "InstrumentTrack.h"
 #include "RenameDialog.h"
 #include "Song.h"
+#include "TrackRenameLineEdit.h"
 
 
 
@@ -48,7 +49,7 @@ TrackLabelButton::TrackLabelButton( TrackView * _tv, QWidget * _parent ) :
 	setAcceptDrops( true );
 	setCursor( QCursor( embed::getIconPixmap( "hand" ), 3, 3 ) );
 	setToolButtonStyle( Qt::ToolButtonTextBesideIcon );
-	m_renameLineEdit = new QLineEdit( this );
+	m_renameLineEdit = new TrackRenameLineEdit( this );
 	m_renameLineEdit->hide();
 	
 	if( ConfigManager::inst()->value( "ui", "compacttrackbuttons" ).toInt() )
@@ -83,8 +84,8 @@ void TrackLabelButton::rename()
 	if( ConfigManager::inst()->value( "ui", "compacttrackbuttons" ).toInt() )
 	{
 		QString txt = m_trackView->getTrack()->name();
-		RenameDialog rename_dlg( txt );
-		rename_dlg.exec();
+		RenameDialog renameDlg( txt );
+		renameDlg.exec();
 		if( txt != text() )
 		{
 			m_trackView->getTrack()->setName( txt );

src/gui/widgets/TrackRenameLineEdit.cpp

@@ -0,0 +1,61 @@
+/*
+ * TrackRenameLineEdit.cpp - implementation of class TrackRenameLineEdit, which
+ * 							 represents the text field that appears when one
+ *							 double-clicks a track's label to rename it
+ *
+ * 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.
+ *
+ */
+
+
+#include "TrackRenameLineEdit.h"
+
+#include <QKeyEvent>
+
+
+
+TrackRenameLineEdit::TrackRenameLineEdit( QWidget * parent ) :
+	QLineEdit( parent )
+{
+}
+
+
+
+
+void TrackRenameLineEdit::show()
+{
+	m_oldName = text();
+	QLineEdit::show();
+}
+
+
+
+
+void TrackRenameLineEdit::keyPressEvent( QKeyEvent * ke )
+{
+	if( ke->key() == Qt::Key_Escape ) 
+	{
+		setText( m_oldName );
+		hide();
+	}
+	
+	QLineEdit::keyPressEvent( ke );
+}