ktechlab/src/electronics/components/eccurrentsource.cpp

/***************************************************************************
 *   Copyright (C) 2003 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 "currentsource.h"
#include "eccurrentsource.h"
#include "ecnode.h"
#include "libraryitem.h"
#include "pin.h"

#include <klocale.h>
#include <tqpainter.h>

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

LibraryItem* ECCurrentSource::libraryItem()
{
	return new LibraryItem(
		TQString("ec/current_source"),
		i18n("Current Source"),
		i18n("Sources"),
		"current_source.png",
		LibraryItem::lit_component,
		ECCurrentSource::construct );
}

ECCurrentSource::ECCurrentSource( ICNDocument *icnDocument, bool newItem, const char *id )
	: Component( icnDocument, newItem, (id) ? id : "current_source" )
{
	m_name = i18n("Current Source");
	m_desc = i18n("Provides a fixed current source.");
	setSize( -16, -8, 24, 24 );

	init1PinLeft(8);
	init1PinRight(8);
	m_pNNode[0]->pin()->setGroundType( Pin::gt_low );
	
	m_currentSource = createCurrentSource( m_pNNode[0], m_pPNode[0], 0. );
	
	createProperty( "current", Variant::Type::Double );
	property("current")->setCaption( i18n("Current") );
	property("current")->setUnit("A");
	property("current")->setMinValue(-1e12);
	property("current")->setMaxValue(1e12);
	property("current")->setValue(0.02);
	
	addDisplayText("current", TQRect( -16, -16, 24, 0 ), "" );
}


ECCurrentSource::~ECCurrentSource()
{
}

void ECCurrentSource::dataChanged()
{
	double current = dataDouble("current");
	m_currentSource->setCurrent(current);
	
	TQString display = TQString::number( current / getMultiplier(current), 'g', 3 ) + getNumberMag(current) + "A";
	setDisplayText("current", display );
}

void ECCurrentSource::drawShape( TQPainter &p )
{
	initPainter(p);
	
	int _x = (int)x()-16;
	int _y = (int)y()-24;
	
	// Top arrow indicating current direction
	p.drawLine( _x+width(), _y+19, _x, _y+19 );
	p.drawLine( _x+width(), _y+19, _x+width()-3, _y+16 );
	p.drawLine( _x+width(), _y+19, _x+width()-3, _y+22 );
	
	// Double circules
	p.drawEllipse( _x, _y+24, 16, 16 );
	p.drawEllipse( _x+8, _y+24, 16, 16 );
	
	deinitPainter(p);
}