MuseScore/mscore/driver.h
Dag Henning Liodden Sørbø 2b6cb8b432 Change to new preferences model
The old Preferences struct holding all preferences are removed in favor of a
new Preferences class which acts as a proxy for QSettings. The settings stored
in QSettings are accessed directly through access methods like getBool(key),
getInt(key), etc. and changed with setPreference(key, value).

Since we are using QSettings directly the preferences are stored automatically
without the need for a custom write() and read() method like before.

The preferences.cpp/.h and prefdialog.cpp/h are refactored to have fewer
responsibilities than before. The Preferences class are all about storing and
retrieving preferences - it should not contain any code to handle any other
aspect of MuseScore.

Testing:
The Preferences class can be used in tests. All preferences are initialized with
default values in mtest. If a test requires that a preference has a specific
value it can be changed using setPreference() for that single test. In the tests
the preferences are stored in memory only.

The Preference class is supposed to be used as a singleton. In preferences.h an
'extern Preferences preferences' is set and it is defined in preferences.cpp. All
files which includes preferences.h have access to the 'preferences' singleton
and should use this to get and set preferences.
2018-02-08 16:59:10 +01:00

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//=============================================================================
// MuseScore
// Linux Music Score Editor
// $Id: driver.h 5660 2012-05-22 14:17:39Z wschweer $
//
// Copyright (C) 2002-2009 Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2.
//
// 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 __DRIVER_H__
#define __DRIVER_H__
namespace Ms {
class Seq;
class Event;
class NPlayEvent;
enum class Transport : char;
//---------------------------------------------------------
// Driver
//---------------------------------------------------------
class Driver {
protected:
Seq* seq;
public:
Driver(Seq* s) { seq = s; }
virtual ~Driver() {}
virtual bool init(bool hot = false) = 0;
virtual bool start(bool hotPlug = false) = 0;
virtual bool stop() = 0;
virtual void stopTransport() = 0;
virtual void startTransport() = 0;
virtual Transport getState() = 0;
virtual void seekTransport(int) {}
virtual int sampleRate() const = 0;
virtual void putEvent(const NPlayEvent&, unsigned /*framePos*/) {}
virtual void midiRead() {}
virtual void handleTimeSigTempoChanged() {}
virtual void checkTransportSeek(int, int, bool) {}
virtual int bufferSize() {return 0;}
virtual void updateOutPortCount(int) {}
};
extern bool alsaIsUsed, jackIsUsed, portAudioIsUsed, pulseAudioIsUsed;
} // namespace Ms
#endif