/***************************************************************************
 *   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.                                   *
 ***************************************************************************/

#include "port.h"
#include "serialportcomponent.h"

#include "ecnode.h"
#include "itemdocument.h"
#include "libraryitem.h"
#include "pin.h"
#include "resistance.h"

#include <kdebug.h>
#include <klocale.h>
#include <qpainter.h>

#include <cmath>
#include <termios.h>

Item* SerialPortComponent::construct( ItemDocument *itemDocument, bool newItem, const char *id )
{
	return new SerialPortComponent( (ICNDocument*)itemDocument, newItem, id );
}

LibraryItem* SerialPortComponent::libraryItem()
{
	return new LibraryItem(
		"ec/serial_port",
		i18n("Serial Port"),
		i18n("Connections"),
		"ic1.png",
		LibraryItem::lit_component,
		SerialPortComponent::construct
						  );
}

SerialPortComponent::SerialPortComponent( ICNDocument *icnDocument, bool newItem, const char *id )
	: Component( icnDocument, newItem, id ? id : "serial_port" )
{
	m_name = i18n("Serial Port");
	m_desc = i18n("Interface to a serial port. The pins are:<br>"
			"<ul>"
			"<li><b>CD</b> - Carrier Detect (control; output)</li>"
			"<li><b>RD</b> - Received Data (data; output)</li>"
			"<li><b>TD</b> - Transmitted Data (data; input)</li>"
			"<li><b>DTR</b> - Data Terminal Ready (control; input)</li>"
			"<li><b>GND</b> - Signal Ground (ground)</li>"
			"<li><b>DSR</b> - Data Set Ready (control; input)</li>"
			"<li><b>RTS</b> - Request to Send (control; input)</li>"
			"<li><b>CTS</b> - Clear to Send (control; output)</li>"
			"<li><b>RI</b> - Ring Indicator (control; output)</li>"
			"</ul>");
	
	QPointArray pa( 4 );
	pa[0] = QPoint( -32, -48 );
	pa[1] = QPoint( 32, -40 );
	pa[2] = QPoint( 32, 40 );
	pa[3] = QPoint( -32, 48 );
	
	setItemPoints( pa );
	
	m_pSerialPort = new SerialPort();
	
	ECNode * pin = 0;
	
	// Works
	pin = createPin( -40,  32,   0, "CD" );
	addDisplayText( "CD", QRect( -28, 24, 28, 16 ), "CD", true, Qt::AlignLeft | Qt::AlignVCenter );
	m_pCD = createLogicOut( pin, false  );
	
	// Doesn't work
// 	pin = createPin( -40,  16,   0, "RD" );
	addDisplayText( "RD", QRect( -28, 8, 28, 16 ), "RD", true, Qt::AlignLeft | Qt::AlignVCenter );
// 	m_pRD = createLogicOut( pin, false  );
	
	// Works
	pin = createPin( -40,   0,   0, "TD" );
	addDisplayText( "TD", QRect( -28, -8, 28, 16 ), "TD", true, Qt::AlignLeft | Qt::AlignVCenter );
	m_pTD = createLogicIn( pin);
	m_pTD->setCallback( this, (CallbackPtr)(&SerialPortComponent::tdCallback) );
	
	// Works
	pin = createPin( -40, -16,   0, "DTR" );
	addDisplayText( "DTR", QRect( -28, -24, 28, 16 ), "DTR", true, Qt::AlignLeft | Qt::AlignVCenter );
	m_pDTR = createLogicIn( pin );
	m_pDTR->setCallback( this, (CallbackPtr)(&SerialPortComponent::dtrCallback) );
	
	// N/A
	pin = createPin( -40, -32,   0, "GND" );
	addDisplayText( "GND", QRect( -28, -40, 28, 16 ), "GND", true, Qt::AlignLeft | Qt::AlignVCenter );
	pin->pin()->setGroundType( Pin::gt_always );
	
	// Doesn't work
// 	pin = createPin(  40,  24, 180, "DSR" );
	addDisplayText( "DSR", QRect( 0, 16, 28, 16 ), "DSR", true, Qt::AlignRight | Qt::AlignVCenter );
// 	m_pDSR = createLogicIn( pin );
// 	m_pDSR->setCallback( this, (CallbackPtr)(&SerialPortComponent::dsrCallback) );
	
	// Doesn't work
// 	pin = createPin(  40,   8, 180, "RTS" );
	addDisplayText( "RTS", QRect( 0, 0, 28, 16 ), "RTS", true, Qt::AlignRight | Qt::AlignVCenter );
// 	m_pRTS = createLogicIn( pin );
// 	m_pRTS->setCallback( this, (CallbackPtr)(&SerialPortComponent::rtsCallback) );
	
	// Works
	pin = createPin(  40,  -8, 180, "CTS" );
	addDisplayText( "CTS", QRect( 0, -16, 28, 16 ), "CTS", true, Qt::AlignRight | Qt::AlignVCenter );
	m_pCTS = createLogicOut( pin, false  );
	
	// Works
	pin = createPin(  40, -24, 180, "RI" );
	addDisplayText( "RI", QRect( 0, -32, 28, 16 ), "RI", true, Qt::AlignRight | Qt::AlignVCenter );
	m_pRI = createLogicOut( pin, false  );
	
	Variant * v = createProperty( "port", Variant::Type::Combo );
	v->setAllowed( SerialPort::ports( Port::ExistsAndRW ) );
	v->setCaption( i18n("Port") );
	
// 	v = createProperty( "baudRate", Variant::Type::Select );
// 	v->setAllowed( QStringList::split( ",", "B0,B50,B75,B110,B134,B150,B200,B300,B600,B1200,B1800,B2400,B4800,B9600,B19200,B38400" ) );
// 	v->setCaption( i18n("Baud rate") );
// 	v->setValue("B9600");
}


SerialPortComponent::~SerialPortComponent()
{
	delete m_pSerialPort;
}


void SerialPortComponent::dataChanged()
{
#if 0
	QString baudString = dataString("baudRate");
	unsigned baudRate = 0;
	
	if ( baudString == "B0" )
		baudRate = B0;
	else if ( baudString == "B50" )
		baudRate = B50;
	else if ( baudString == "B75" )
		baudRate = B75;
	else if ( baudString == "B110" )
		baudRate = B110;
	else if ( baudString == "B134" )
		baudRate = B134;
	else if ( baudString == "B150" )
		baudRate = B150;
	else if ( baudString == "B200" )
		baudRate = B200;
	else if ( baudString == "B300" )
		baudRate = B300;
	else if ( baudString == "B600" )
		baudRate = B600;
	else if ( baudString == "B1200" )
		baudRate = B1200;
	else if ( baudString == "B1800" )
		baudRate = B1800;
	else if ( baudString == "B2400" )
		baudRate = B2400;
	else if ( baudString == "B4800" )
		baudRate = B4800;
	else if ( baudString == "B9600" )
		baudRate = B9600;
	else if ( baudString == "B19200" )
		baudRate = B19200;
	else if ( baudString == "B38400" )
		baudRate = B38400;
	else
	{
		kdError() << k_funcinfo << "Unknown baud rate = \""<<baudString<<"\""<<endl;
		return;
	}
	
	initPort( dataString("port"), baudRate );
#endif

	initPort( dataString("port"), B200 );
}


void SerialPortComponent::initPort( const QString & port, unsigned baudRate )
{
	if ( port.isEmpty() )
	{
		m_pSerialPort->closePort();
		return;
	}
	
	if ( ! m_pSerialPort->openPort( port, baudRate ) )
	{
		p_itemDocument->canvas()->setMessage( i18n("Could not open port %1").arg( port ) );
		return;
	}
}


void SerialPortComponent::stepNonLogic()
{
	m_pCD->setHigh( m_pSerialPort->pinState( SerialPort::CD ) );
// 	m_pRD->setHigh( m_pSerialPort->pinState( SerialPort::RD ) );
	m_pCTS->setHigh( m_pSerialPort->pinState( SerialPort::CTS ) );
	m_pRI->setHigh( m_pSerialPort->pinState( SerialPort::RI ) );
}


void SerialPortComponent::tdCallback( bool isHigh )
{
	m_pSerialPort->setPinState( SerialPort::TD, isHigh );
}


void SerialPortComponent::dtrCallback( bool isHigh )
{
	m_pSerialPort->setPinState( SerialPort::DTR, isHigh );
}


void SerialPortComponent::dsrCallback( bool isHigh )
{
	m_pSerialPort->setPinState( SerialPort::DSR, isHigh );
}


void SerialPortComponent::rtsCallback( bool isHigh )
{
	m_pSerialPort->setPinState( SerialPort::RTS, isHigh );
}


void SerialPortComponent::drawShape( QPainter & p )
{
	drawPortShape( p );
}