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// qtractorMonitor.h
//
/****************************************************************************
Copyright (C) 2006-2016, rncbc aka Rui Nuno Capela. All rights reserved.
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; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*****************************************************************************/
#ifndef __qtractorMonitor_h
#define __qtractorMonitor_h
#include "qtractorMidiControlObserver.h"
//----------------------------------------------------------------------------
// qtractorMonitor -- Monitor bridge value processor.
class qtractorMonitor
{
public:
// Constructor.
qtractorMonitor(float fGain = 1.0f, float fPanning = 0.0f)
: m_gainSubject(fGain, 1.0f), m_panningSubject(fPanning, 0.0f),
m_gainObserver(this), m_panningObserver(this)
{ m_panningSubject.setMinValue(-1.0f); }
// Virtual destructor.
virtual ~qtractorMonitor() {}
// Gain accessors.
qtractorSubject *gainSubject()
{ return &m_gainSubject; }
qtractorMidiControlObserver *gainObserver()
{ return static_cast<qtractorMidiControlObserver *> (&m_gainObserver); }
void setGain(float fGain)
{ m_gainSubject.setValue(fGain); update(); }
float gain() const
{ return m_gainSubject.value(); }
float prevGain() const
{ return m_gainSubject.prevValue(); }
// Stereo panning accessors.
qtractorSubject *panningSubject()
{ return &m_panningSubject; }
qtractorMidiControlObserver *panningObserver()
{ return static_cast<qtractorMidiControlObserver *> (&m_panningObserver); }
void setPanning(float fPanning)
{ m_panningSubject.setValue(fPanning); update(); }
float panning() const
{ return m_panningSubject.value(); }
float prevPanning() const
{ return m_panningSubject.prevValue(); }
// Rebuild the whole panning-gain array...
virtual void update() = 0;
protected:
// Observer -- Local dedicated observers.
class Observer : public qtractorMidiControlObserver
{
public:
// Constructor.
Observer(qtractorMonitor *pMonitor, qtractorSubject *pSubject)
: qtractorMidiControlObserver(pSubject), m_pMonitor(pMonitor) {}
protected:
// Update feedback.
void update(bool bUpdate)
{
m_pMonitor->update();
qtractorMidiControlObserver::update(bUpdate);
}
private:
// Members.
qtractorMonitor *m_pMonitor;
};
class GainObserver : public Observer
{
public:
// Constructor.
GainObserver(qtractorMonitor *pMonitor)
: Observer(pMonitor, pMonitor->gainSubject()) {}
};
class PanningObserver : public Observer
{
public:
// Constructor.
PanningObserver(qtractorMonitor *pMonitor)
: Observer(pMonitor, pMonitor->panningSubject()) {}
};
// Instance variables.
qtractorSubject m_gainSubject;
qtractorSubject m_panningSubject;
GainObserver m_gainObserver;
PanningObserver m_panningObserver;
};
#endif // __qtractorMonitor_h
// end of qtractorMonitor.h
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