Automatically assign a midi input device to the selected track (#5499)

include/InstrumentTrack.h

@@ -219,6 +219,8 @@ public:
 		return m_previewMode;
 	}
 
+	void autoAssignMidiDevice( bool );
+
 signals:
 	void instrumentChanged();
 	void midiNoteOn( const Note& );
@@ -260,6 +262,9 @@ private:
 
 	bool m_previewMode;
 
+	bool m_hasAutoMidiDev;
+	static InstrumentTrack *s_autoAssignedTrack;
+
 	IntModel m_baseNoteModel;
 
 	NotePlayHandleList m_processHandles;

include/PianoRoll.h

@@ -178,6 +178,7 @@ protected:
 	void resizeEvent( QResizeEvent * re ) override;
 	void wheelEvent( QWheelEvent * we ) override;
 	void focusOutEvent( QFocusEvent * ) override;
+	void focusInEvent( QFocusEvent * ) override;
 
 	int getKey( int y ) const;
 	void drawNoteRect( QPainter & p, int x, int y,

include/PianoView.h

@@ -56,6 +56,7 @@ protected:
 	void mouseReleaseEvent( QMouseEvent * me ) override;
 	void mouseMoveEvent( QMouseEvent * me ) override;
 	void focusOutEvent( QFocusEvent * _fe ) override;
+	void focusInEvent( QFocusEvent * fe ) override;
 	void resizeEvent( QResizeEvent * _event ) override;
 
 

include/SetupDialog.h

@@ -175,6 +175,7 @@ private:
 	QComboBox * m_midiInterfaces;
 	MswMap m_midiIfaceSetupWidgets;
 	trMap m_midiIfaceNames;
+	QComboBox * m_assignableMidiDevices;
 
 	// Paths settings widgets.
 	QString m_workingDir;