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/***************************************************************************
* Copyright (C) 2005 by David Saxton *
* david@bluehaze.org *
* *
* 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. *
***************************************************************************/
#ifndef SWITCH_H
#define SWITCH_H
#include <qguardedptr.h>
#include <qobject.h>
class CircuitDocument;
class Component;
class Pin;
class Resistance;
class QTimer;
/**
@author David Saxton
*/
class Switch : public QObject
{
Q_OBJECT
public:
enum State
{
Open,
Closed,
};
Switch( Component * parent, Pin * p1, Pin * p2, State state );
~Switch();
/**
* If bouncing has been set to true, then the state will not switch
* immediately to that given.
*/
void setState( State state );
State state() const { return m_state; }
/**
* Tell the switch whether to bounce or not, for the given duration,
* when the state is changed.
*/
void setBounce( bool bounce, int msec = 5 );
/**
* Tell the switch to continue bouncing (updates the resistance value).
* Called from the simulator.
*/
void bounce();
/**
* Attempts to calculate the current that is flowing through the switch.
* (If all the connectors at one of the ends know their currents, then
* this switch will give the current to the pins at either end).
* @return whether it was successful.
* @see CircuitDocument::calculateConnectorCurrents
*/
bool calculateCurrent();
protected slots:
/**
* Called from a QTimer timeout - our bouncing period has come to an
* end. This will then fully disconnect or connect the pins depending
* on the current state.
*/
void stopBouncing();
protected:
void startBouncing();
bool m_bBounce;
int m_bouncePeriod_ms;
unsigned long long m_bounceStart; // Simulator time that bouncing started
Resistance * m_pBounceResistance;
State m_state;
Component * m_pComponent;
QGuardedPtr<Pin> m_pP1;
QGuardedPtr<Pin> m_pP2;
QTimer * m_pStopBouncingTimer;
};
#endif
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