/***************************************************************************
 *   Copyright (C) 2004-2005 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 "canvasitemparts.h"
#include "circuitdocument.h"
#include "component.h"
#include "src/core/ktlconfig.h"
#include "ecnode.h"
#include "itemdocumentdata.h"
#include "node.h"
#include "pin.h"
#include "simulator.h"

#include "bjt.h"
#include "capacitance.h"
#include "cccs.h"
#include "ccvs.h"
#include "currentsignal.h"
#include "currentsource.h"
#include "diode.h"
#include "inductance.h"
#include "logic.h"
#include "opamp.h"
#include "resistance.h"
#include "switch.h"
#include "vccs.h"
#include "vcvs.h"
#include "voltagepoint.h"
#include "voltagesignal.h"
#include "voltagesource.h"

#include <cmath>
#include <kdebug.h>
#include <tqbitarray.h>
#include <tqpainter.h>
#include <tqwidget.h>
#include <tqwmatrix.h>

const int dipWidth = 112;
const int pairSep = 32;

// Degrees per radian
static const double DPR = 57.29577951308232087665461840231273527024;

Component::Component( ICNDocument *icnDocument, bool newItem, const TQString &id )
	: CNItem( icnDocument, newItem, id ),
	  m_angleDegrees(0),
	  b_flipped(false)
{
	m_pCircuitDocument = dynamic_cast<CircuitDocument*>(icnDocument);
	
	for ( int i=0; i<4; ++i )
	{
		m_pPNode[i] = 0l;
		m_pNNode[i] = 0l;
	}
	
	// Get configuration options
	slotUpdateConfiguration();
	
	// And finally register this :-)
	icnDocument->registerItem(this);
}

Component::~Component()
{
	removeElements();
	Simulator::self()->detachComponent(this);
}

void Component::removeItem( )
{
	if (b_deleted)
		return;
	Simulator::self()->detachComponent(this);
	CNItem::removeItem();
}

void Component::removeElements( bool setPinsInterIndependent )
{
	const ElementMapList::iterator end = m_elementMapList.end();
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
	{
		Element * e = (*it).e;
		if (e)
		{
			emit elementDestroyed(e);
			e->componentDeleted();
		}
	}
	m_elementMapList.clear();
	
	const SwitchList::iterator swEnd = m_switchList.end();
	for ( SwitchList::iterator it = m_switchList.begin(); it != swEnd; ++it )
	{
		Switch * sw = *it;
		if ( !sw )
			continue;
		
		emit switchDestroyed( sw );
		delete sw;
	}
	m_switchList.clear();
	
	if ( setPinsInterIndependent )
		setAllPinsInterIndependent();
}


void Component::removeElement( Element * element, bool setPinsInterIndependent )
{
	if (!element)
		return;
	
	emit elementDestroyed(element);
	element->componentDeleted();
	
	const ElementMapList::iterator end = m_elementMapList.end();
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; )
	{
		ElementMapList::iterator next = it;
		++next;
		
		if ( (*it).e == element )
			m_elementMapList.remove(it);
		
		it = next;
	}
	
	if ( setPinsInterIndependent )
		rebuildPinInterDepedence();
}


void Component::removeSwitch( Switch * sw )
{
	if ( !sw )
		return;
	
	emit switchDestroyed( sw );
	delete sw;
	m_switchList.remove(sw);
	m_pCircuitDocument->requestAssignCircuits();
}


void Component::setNodalCurrents()
{
	const ElementMapList::iterator end = m_elementMapList.end();
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
	{
		ElementMap m = (*it);
		for ( int i=0; i<4; i++ )
		{
			if ( m.n[i] ) {
				m.n[i]->mergeCurrent( m.e->m_cnodeI[i] );
			}
		}
	}
}


void Component::initPainter( TQPainter &p )
{
	CNItem::initPainter(p);
	
	if ( !b_flipped && (m_angleDegrees%360 == 0) )
		return;
	
	p.save();
	
	p.translate( int(x()), int(y()) );
	if (b_flipped)
		p.scale( -1, 1 );
	
	p.rotate(m_angleDegrees);
	p.translate( -int(x()), -int(y()) );
}


void Component::deinitPainter( TQPainter &p )
{
	if ( !b_flipped && (m_angleDegrees%360 == 0) )
		return;
	
	p.restore();
}


void Component::setAngleDegrees( int degrees )
{
	updateConnectorPoints(false);
	m_angleDegrees = degrees;
	itemPointsChanged();
	updateAttachedPositioning();
	p_icnDocument->requestRerouteInvalidatedConnectors();
}


void Component::setFlipped( bool flipped )
{
	updateConnectorPoints(false);
	b_flipped = flipped;
	itemPointsChanged();
	updateAttachedPositioning();
	p_icnDocument->requestRerouteInvalidatedConnectors();
}


void Component::itemPointsChanged()
{
	TQPointArray transformedPoints = transMatrix( m_angleDegrees, b_flipped, 0, 0, false ).map(m_itemPoints);
// 	transformedPoints.translate( int(x()), int(y()) );
	setPoints(transformedPoints);
}


void Component::restoreFromItemData( const ItemData &itemData )
{
	CNItem::restoreFromItemData(itemData);
	
	setAngleDegrees( int(itemData.angleDegrees) );
	setFlipped(itemData.flipped);
}


ItemData Component::itemData() const
{
	ItemData itemData = CNItem::itemData();
	itemData.angleDegrees = m_angleDegrees;
	itemData.flipped = b_flipped;
	return itemData;
}


TQWMatrix Component::transMatrix( int angleDegrees, bool flipped, int x, int y, bool inverse )
{
	TQWMatrix m;
	m.translate( x, y );
	if (inverse)
	{
		m.rotate(-angleDegrees);
		if (flipped)
			m.scale( -1, 1 );
	}
	else
	{
		if (flipped)
			m.scale( -1, 1 );
		m.rotate(angleDegrees);
	}
	m.translate( -x, -y );
	m.setTransformationMode( TQWMatrix::Areas );
	return m;
}


void Component::finishedCreation()
{
	CNItem::finishedCreation();
	updateAttachedPositioning();
}


void Component::updateAttachedPositioning()
{
	if (b_deleted || !m_bDoneCreation)
		return;
	
	//BEGIN Transform the nodes
	const NodeMap::iterator end = m_nodeMap.end();
	for ( NodeMap::iterator it = m_nodeMap.begin(); it != end; ++it )
	{
		if ( !it.data().node )
			kdError() << k_funcinfo << "Node in nodemap is null" << endl;
		else
		{
			int nx = int((std::cos(m_angleDegrees/DPR) * it.data().x) - (std::sin(m_angleDegrees/DPR) * it.data().y));
			int ny = int((std::sin(m_angleDegrees/DPR) * it.data().x) + (std::cos(m_angleDegrees/DPR) * it.data().y));
			
			if (b_flipped)
				nx = -nx;
			
#define round_8(x) (((x) > 0) ? int(((x)+4)/8)*8 : int(((x)-4)/8)*8)
			nx = round_8(nx);
			ny = round_8(ny);
#undef round_8
			
			int newDir = (((m_angleDegrees + it.data().orientation)%360)+360)%360;
			if (b_flipped)
				newDir = (((180-newDir)%360)+360)%360;
			
			it.data().node->move( nx+x(), ny+y() );
			it.data().node->setOrientation( (Node::node_dir)newDir );
		}
	}
	//END Transform the nodes
	
	
	//BEGIN Transform the GuiParts
	TQWMatrix m;
	
	if (b_flipped)
		m.scale( -1, 1 );
	m.rotate(m_angleDegrees);
	m.setTransformationMode( TQWMatrix::Areas );
	
	const TextMap::iterator textMapEnd = m_textMap.end();
	for ( TextMap::iterator it = m_textMap.begin(); it != textMapEnd; ++it )
	{
		TQRect newPos = m.mapRect( it.data()->recommendedRect() );
		it.data()->move( newPos.x() + x(), newPos.y() + y() );
		it.data()->setGuiPartSize( newPos.width(), newPos.height() );
		it.data()->setAngleDegrees(m_angleDegrees);
	}
	const WidgetMap::iterator widgetMapEnd = m_widgetMap.end();
	for ( WidgetMap::iterator it = m_widgetMap.begin(); it != widgetMapEnd; ++it )
	{
		TQRect newPos = m.mapRect( it.data()->recommendedRect() );
		it.data()->move( newPos.x() + x(), newPos.y() + y() );
		it.data()->setGuiPartSize( newPos.width(), newPos.height() );
		it.data()->setAngleDegrees(m_angleDegrees);
	}
	//END Transform the GuiParts
}


void Component::drawPortShape( TQPainter & p )
{
	int h = height();
	int w = width() - 1;
	int _x = int( x() + offsetX() );
	int _y = int( y() + offsetY() );
	
	double roundSize = 8;
	double slantIndent = 8;
			
	const double pi = 3.1415926536;
	const double DPR = 180./pi;
	double inner = std::atan(h/slantIndent);	// Angle for slight corner
	double outer = pi-inner;					// Angle for sharp corner
			
	int inner16 = int(16*inner*DPR);
	int outer16 = int(16*outer*DPR);
	
	p.save();
	p.setPen( TQt::NoPen );
	p.drawPolygon( areaPoints() );
	p.restore();
	
	initPainter( p );
	
	// Left line
	p.drawLine( int(_x),	int(_y+roundSize/2),	int(_x),	int(_y+h-roundSize/2) );
	
	// Right line
	p.drawLine( int(_x+w),	int(_y-slantIndent+h-roundSize/2),	int(_x+w),	int(_y+slantIndent+roundSize/2) );
	
	// Bottom line
	p.drawLine( int(_x+(1-std::cos(outer))*(roundSize/2)),		int(_y+h+(std::sin(outer)-1)*(roundSize/2)),				
				int(_x+w+(std::cos(inner)-1)*(roundSize/2)),	int(_y+h-slantIndent+(std::sin(inner)-1)*(roundSize/2)) );
	
	// Top line
	p.drawLine( int(_x+w+(std::cos(outer)-1)*(roundSize/2)),	int(_y+slantIndent+(1-std::sin(inner))*(roundSize/2)),
				int(_x+(1-std::cos(inner))*(roundSize/2)),		int(_y+(1-std::sin(outer))*(roundSize/2)) );
	
	
	// Top left
	p.drawArc( int(_x),				int(_y),							int(roundSize), int(roundSize), 90*16,	outer16 );
	
	// Bottom left
	p.drawArc( int(_x),				int(_y+h-roundSize),				int(roundSize), int(roundSize), 180*16,	outer16 );
	
	// Top right
	p.drawArc( int(_x+w-roundSize),	int(_y+slantIndent),				int(roundSize), int(roundSize), 0,		inner16 );
	
	// Bottom right
	p.drawArc( int(_x+w-roundSize),	int(_y-slantIndent+h-roundSize),	int(roundSize), int(roundSize), 270*16,	inner16 );
	
	deinitPainter( p );
}


void Component::initDIP( const TQStringList & pins )
{
	const int numPins = pins.size();
	const int numSide = numPins/2 + numPins%2;
	
	// Pins along left
	for ( int i=0; i<numSide; i++ )
	{
		if ( !pins[i].isEmpty() )
		{
			const int nodeX = -8+offsetX();
			const int nodeY = (i+1)*16+offsetY();
			ECNode *node = ecNodeWithID(pins[i]);
			if (node)
			{
				m_nodeMap[pins[i]].x = nodeX;
				m_nodeMap[pins[i]].y = nodeY;
				m_nodeMap[pins[i]].orientation = (Node::node_dir)0;
			}
			else
				createPin( nodeX, nodeY, 0, pins[i] );
		}
	}
	// Pins along right
	for ( int i=numSide; i<numPins; i++ )
	{
		if ( !pins[i].isEmpty() )
		{
			const int nodeX = width()+8+offsetX();
			const int nodeY = (2*numSide-i)*16+offsetY();
			ECNode *node = ecNodeWithID(pins[i]);
			if (node)
			{
				m_nodeMap[pins[i]].x = nodeX;
				m_nodeMap[pins[i]].y = nodeY;
				m_nodeMap[pins[i]].orientation = (Node::node_dir)180;
			}
			else
				createPin( nodeX, nodeY, 180, pins[i] );
		}
	}
	
	updateAttachedPositioning();
}

void Component::initDIPSymbol( const TQStringList & pins, int _width )
{
	const int numPins = pins.size();
	const int numSide = numPins/2 + numPins%2;
	
	setSize( -(_width-(_width%16))/2, -(numSide+1)*8, _width, (numSide+1)*16, true );
	
	TQWidget tmpWidget;
	TQPainter p(&tmpWidget);
	
	p.setFont(m_font);
	
	// Pins along left
	for ( int i=0; i<numSide; i++ )
	{
		if ( !pins[i].isEmpty() )
		{
			const TQString text = *pins.at(i);
			
			const int _top = (i+1)*16-8 + offsetY();
			const int _width = width()/2 - 6;
			const int _left = 6 + offsetX();
			const int _height = 16;
			
			TQRect br = p.boundingRect( TQRect( _left, _top, _width, _height ), TQt::AlignLeft, text );
			addDisplayText( text, br, text );
		}
	}
	// Pins along right
	for ( int i=numSide; i<numPins; i++ )
	{
		if ( !pins[i].isEmpty() )
		{
			const TQString text = *pins.at(i);
			
			const int _top = (2*numSide-i)*16 - 8 + offsetY();
			const int _width = width()/2 - 6;
			const int _left = (width()/2) + offsetX();
			const int _height = 16;
			
			TQRect br = p.boundingRect( TQRect( _left, _top, _width, _height ), TQt::AlignRight, text );
			addDisplayText( text, br, text );
		}
	}
	
	updateAttachedPositioning();
}


// 	TQString createNode( double _x, double _y, int shape, int orientation, const TQString &name, int type, bool isInput = true );

void Component::init1PinLeft( int h1 )
{
	if ( h1 == -1 ) h1 = offsetY()+height()/2;

	m_pNNode[0] = createPin( offsetX()-8,			h1, 0,	"n1" );
}

void Component::init2PinLeft( int h1, int h2 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+height()-8;
	
	m_pNNode[0] = createPin( offsetX()-8,			h1, 0,	"n1" );
	m_pNNode[1] = createPin( offsetX()-8,			h2, 0,	"n2" );
}

void Component::init3PinLeft( int h1, int h2, int h3 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+height()/2;
	if ( h3 == -1 ) h3 = offsetY()+height()-8;
	
	m_pNNode[0] = createPin( offsetX()-8,			h1, 0,	"n1" );
	m_pNNode[1] = createPin( offsetX()-8,			h2, 0,	"n2" );
	m_pNNode[2] = createPin( offsetX()-8,			h3, 0,	"n3" );
}

void Component::init4PinLeft( int h1, int h2, int h3, int h4 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+24;
	if ( h3 == -1 ) h3 = offsetY()+height()-24;
	if ( h4 == -1 ) h4 = offsetY()+height()-8;
	
	m_pNNode[0] = createPin( offsetX()-8,			h1, 0,	"n1" );
	m_pNNode[1] = createPin( offsetX()-8,			h2, 0,	"n2" );
	m_pNNode[2] = createPin( offsetX()-8,			h3, 0,	"n3" );
	m_pNNode[3] = createPin( offsetX()-8,			h4, 0,	"n4" );
}

void Component::init1PinRight( int h1 )
{
	if ( h1 == -1 ) h1 = offsetY()+height()/2;

	m_pPNode[0] = createPin( offsetX()+width()+8,	h1, 180, "p1" );
}


void Component::init2PinRight( int h1, int h2 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+height()-8;
	
	m_pPNode[0] = createPin( offsetX()+width()+8,	h1, 180,	"p1" );
	m_pPNode[1] = createPin( offsetX()+width()+8,	h2, 180,	"p2" );
}

void Component::init3PinRight( int h1, int h2, int h3 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+height()/2;
	if ( h3 == -1 ) h3 = offsetY()+height()-8;
	
	m_pPNode[0] = createPin( offsetX()+width()+8,	h1, 180,	"p1" );
	m_pPNode[1] = createPin( offsetX()+width()+8,	h2, 180,	"p2" );
	m_pPNode[2] = createPin( offsetX()+width()+8,	h3, 180,	"p3" );
}

void Component::init4PinRight( int h1, int h2, int h3, int h4 )
{
	if ( h1 == -1 ) h1 = offsetY()+8;
	if ( h2 == -1 ) h2 = offsetY()+24;
	if ( h3 == -1 ) h3 = offsetY()+height()-24;
	if ( h4 == -1 ) h4 = offsetY()+height()-8;
	
	m_pPNode[0] = createPin( offsetX()+width()+8,	h1, 180,	"p1" );
	m_pPNode[1] = createPin( offsetX()+width()+8,	h2, 180,	"p2" );
	m_pPNode[2] = createPin( offsetX()+width()+8,	h3, 180,	"p3" );
	m_pPNode[3] = createPin( offsetX()+width()+8,	h4, 180,	"p4" );
}


ECNode* Component::ecNodeWithID( const TQString &ecNodeId )
{
	return dynamic_cast<ECNode*>( p_icnDocument->nodeWithID( nodeId(ecNodeId) ) );
}


void Component::slotUpdateConfiguration()
{
	const LogicConfig logicConfig = LogicIn::getConfig();
	
	const ElementMapList::iterator end = m_elementMapList.end();
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
	{
		if ( LogicIn * logicIn = dynamic_cast<LogicIn*>((*it).e) )
			logicIn->setLogic(logicConfig);
	}
}



BJT *			Component::createBJT( ECNode *c, ECNode *b, ECNode *e, bool isNPN )
{ return createBJT( c->pin(), b->pin(), e->pin(), isNPN ); }
Capacitance *	Component::createCapacitance( ECNode *n0, ECNode *n1, double capacitance )
{ return createCapacitance( n0->pin(), n1->pin(), capacitance ); }
CCCS *			Component::createCCCS( ECNode *n0, ECNode *n1, ECNode *n2, ECNode *n3, double gain )
{ return createCCCS( n0->pin(), n1->pin(), n2->pin(), n3->pin(), gain ); }
CCVS *			Component::createCCVS( ECNode *n0, ECNode *n1, ECNode *n2, ECNode *n3, double gain )
{ return createCCVS( n0->pin(), n1->pin(), n2->pin(), n3->pin(), gain ); }
CurrentSignal *	Component::createCurrentSignal( ECNode *n0, ECNode *n1, double current )
{ return createCurrentSignal( n0->pin(), n1->pin(), current ); }
CurrentSource *	Component::createCurrentSource( ECNode *n0, ECNode *n1, double current )
{ return createCurrentSource( n0->pin(), n1->pin(), current ); }
Diode *			Component::createDiode( ECNode *n0, ECNode *n1 )
{ return createDiode( n0->pin(), n1->pin() ); }
Inductance *	Component::createInductance( ECNode *n0, ECNode *n1, double inductance )
{ return createInductance( n0->pin(), n1->pin(), inductance ); }
LogicIn *		Component::createLogicIn( ECNode *node )
{ return createLogicIn( node->pin() ); }
LogicOut *		Component::createLogicOut( ECNode *node, bool isHigh )
{ return createLogicOut( node->pin(), isHigh ); }
OpAmp *			Component::createOpAmp( ECNode * nonInverting, ECNode * out, ECNode * inverting )
{ return createOpAmp( nonInverting->pin(), out->pin(), inverting->pin() ); }
Resistance *	Component::createResistance( ECNode *n0, ECNode *n1, double resistance )
{ return createResistance( n0->pin(), n1->pin(), resistance ); }
Switch *		Component::createSwitch( ECNode *n0, ECNode *n1, bool open )
{ return createSwitch( n0->pin(), n1->pin(), open ); }
VCCS *			Component::createVCCS( ECNode *n0, ECNode *n1, ECNode *n2, ECNode *n3, double gain )
{ return createVCCS( n0->pin(), n1->pin(), n2->pin(), n3->pin(), gain ); }
VCVS *			Component::createVCVS( ECNode *n0, ECNode *n1, ECNode *n2, ECNode *n3, double gain )
{ return createVCVS( n0->pin(), n1->pin(), n2->pin(), n3->pin(), gain ); }
VoltagePoint *	Component::createVoltagePoint( ECNode *n0, double voltage )
{ return createVoltagePoint( n0->pin(), voltage ); }
VoltageSignal *	Component::createVoltageSignal( ECNode *n0, ECNode *n1, double voltage )
{ return createVoltageSignal( n0->pin(), n1->pin(), voltage ); }
VoltageSource *	Component::createVoltageSource( ECNode *n0, ECNode *n1, double voltage )
{ return createVoltageSource( n0->pin(), n1->pin(), voltage ); }

BJT* Component::createBJT( Pin *cN, Pin *bN, Pin *eN, bool isNPN )
{
	BJT *e = new BJT(isNPN);
	
	TQValueList<Pin*> pins;
	pins << bN << cN << eN;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

Capacitance* Component::createCapacitance( Pin *n0, Pin *n1, double capacitance )
{
	Capacitance *e = new Capacitance( capacitance, 1./LINEAR_UPDATE_RATE );
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

CCCS* Component::createCCCS( Pin *n0, Pin *n1, Pin *n2, Pin *n3, double gain )
{
	CCCS *e = new CCCS(gain);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1 << n2 << n3;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

CCVS* Component::createCCVS( Pin *n0, Pin *n1, Pin *n2, Pin *n3, double gain )
{
	CCVS *e = new CCVS(gain);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1 << n2 << n3;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterCircuitDependent( it, pins );
	
	pins.clear();
	pins << n0 << n1;
	setInterGroundDependent( it, pins );
	
	pins.clear();
	pins << n2 << n3;
	setInterGroundDependent( it, pins );
	
	return e;
}

CurrentSignal* Component::createCurrentSignal( Pin *n0, Pin *n1, double current )
{
	CurrentSignal *e = new CurrentSignal( 1./LINEAR_UPDATE_RATE, current );
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

CurrentSource* Component::createCurrentSource( Pin *n0, Pin *n1, double current )
{
	CurrentSource *e = new CurrentSource(current);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

Diode* Component::createDiode( Pin *n0, Pin *n1 )
{
	Diode *e = new Diode();
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

Inductance* Component::createInductance( Pin *n0, Pin *n1, double inductance )
{
	Inductance *e = new Inductance( inductance, 1./LINEAR_UPDATE_RATE );
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

LogicIn *Component::createLogicIn( Pin *node )
{
	LogicIn *e = new LogicIn(LogicIn::getConfig());
	
	TQValueList<Pin*> pins;
	pins << node;
	
	ElementMapList::iterator it = handleElement( e, pins );
	return e;
}

LogicOut *Component::createLogicOut( Pin *node, bool isHigh )
{
	LogicOut *e = new LogicOut( LogicIn::getConfig(), isHigh);
	
	TQValueList<Pin*> pins;
	pins << node;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

OpAmp * Component::createOpAmp( Pin * nonInverting, Pin * inverting, Pin * out )
{
	OpAmp * e = new OpAmp();
	
	TQValueList<Pin*> pins;
	pins << nonInverting << inverting << out;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

Resistance* Component::createResistance( Pin *n0, Pin *n1, double resistance )
{
	Resistance *e = new Resistance(resistance);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

Switch* Component::createSwitch( Pin *n0, Pin *n1, bool open )
{
	// Note that a Switch is not really an element (although in many cases it
	// behaves very much like one).
	
	Switch * e = new Switch( this, n0, n1, open ? Switch::Open : Switch::Closed );
	m_switchList.append(e);
	n0->addSwitch( e );
	n1->addSwitch( e );
	emit switchCreated( e );
	return e;
}

VCCS* Component::createVCCS( Pin *n0, Pin *n1, Pin *n2, Pin *n3, double gain )
{
	VCCS *e = new VCCS(gain);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1 << n2 << n3;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

VCVS* Component::createVCVS( Pin *n0, Pin *n1, Pin *n2, Pin *n3, double gain )
{
	VCVS *e = new VCVS(gain);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1 << n2 << n3;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterCircuitDependent( it, pins );
	
	pins.clear();
	pins << n0 << n1;
	setInterGroundDependent( it, pins );
	
	pins.clear();
	pins << n2 << n3;
	setInterGroundDependent( it, pins );
	return e;
}

VoltagePoint* Component::createVoltagePoint( Pin *n0, double voltage )
{
	VoltagePoint *e = new VoltagePoint(voltage);
	
	TQValueList<Pin*> pins;
	pins << n0;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

VoltageSignal* Component::createVoltageSignal( Pin *n0, Pin *n1, double voltage )
{
	VoltageSignal *e = new VoltageSignal( 1./LINEAR_UPDATE_RATE, voltage );
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}

VoltageSource* Component::createVoltageSource( Pin *n0, Pin *n1, double voltage )
{
	VoltageSource *e = new VoltageSource(voltage);
	
	TQValueList<Pin*> pins;
	pins << n0 << n1;
	
	ElementMapList::iterator it = handleElement( e, pins );
	setInterDependent( it, pins );
	return e;
}


ElementMapList::iterator Component::handleElement( Element *e, const TQValueList<Pin*> & pins )
{
	if (!e)
		return m_elementMapList.end();
	
	ElementMap em;
	em.e = e;
	int at = 0;
	TQValueList<Pin*>::ConstIterator end = pins.end();
	for ( TQValueList<Pin*>::ConstIterator it = pins.begin(); it != end; ++it )
	{
		(*it)->addElement(e);
		em.n[at++] = *it;
	}
	
	ElementMapList::iterator it = m_elementMapList.append(em);
	
	emit elementCreated(e);
	return it;
}


void Component::setInterDependent( ElementMapList::iterator it, const TQValueList<Pin*> & pins )
{
	setInterCircuitDependent( it, pins );
	setInterGroundDependent( it, pins );
}


void Component::setInterCircuitDependent( ElementMapList::iterator it, const TQValueList<Pin*> & pins )
{
	TQValueList<Pin*>::ConstIterator end = pins.end();
	for ( TQValueList<Pin*>::ConstIterator it1 = pins.begin(); it1 != end; ++it1 )
	{
		for ( TQValueList<Pin*>::ConstIterator it2 = pins.begin(); it2 != end; ++it2 )
		{
			(*it1)->addCircuitDependentPin( *it2 );
		}
	}
	
	(*it).interCircuitDependent.append( pins );
}


void Component::setInterGroundDependent( ElementMapList::iterator it, const TQValueList<Pin*> & pins )
{
	TQValueList<Pin*>::ConstIterator end = pins.end();
	for ( TQValueList<Pin*>::ConstIterator it1 = pins.begin(); it1 != end; ++it1 )
	{
		for ( TQValueList<Pin*>::ConstIterator it2 = pins.begin(); it2 != end; ++it2 )
		{
			(*it1)->addGroundDependentPin( *it2 );
		}
	}
	
	(*it).interGroundDependent.append( pins );
}


void Component::rebuildPinInterDepedence()
{
	setAllPinsInterIndependent();
	
	// Rebuild dependencies
	ElementMapList::iterator emlEnd = m_elementMapList.end();
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != emlEnd; ++it )
	{
		// Many copies of the pin lists as these will be affected when we call setInter*Dependent
		PinListList list = (*it).interCircuitDependent;
		
		PinListList::iterator depEnd = list.end();
		for ( PinListList::iterator depIt = list.begin(); depIt != depEnd; ++depIt )
			setInterCircuitDependent( it, *depIt );
		
		list = (*it).interGroundDependent;
		
		depEnd = list.end();
		for ( PinListList::iterator depIt = list.begin(); depIt != depEnd; ++depIt )
			setInterGroundDependent( it, *depIt );
	}
}


void Component::setAllPinsInterIndependent()
{
	NodeMap::iterator nmEnd = m_nodeMap.end();
	for ( NodeMap::iterator it = m_nodeMap.begin(); it != nmEnd; ++it )
	{
		PinVector pins = (static_cast<ECNode*>(it.data().node))->pins();
		PinVector::iterator pinsEnd = pins.end();
		for ( PinVector::iterator pinsIt = pins.begin(); pinsIt != pinsEnd; ++pinsIt )
		{
			if ( *pinsIt )
				(*pinsIt)->removeDependentPins();
		}
	}
}


void Component::initElements( const uint stage )
{
	/// @todo this function is ugly and messy and needs tidying up
	
	const ElementMapList::iterator end = m_elementMapList.end();
		
	if ( stage == 1 )
	{
		for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
		{
			(*it).e->add_initial_dc();
		}
		return;
	}
	
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
	{
		ElementMap m = (*it);
		
		if ( m.n[3] ) {
			m.e->setCNodes( m.n[0]->eqId(), m.n[1]->eqId(), m.n[2]->eqId(), m.n[3]->eqId() );
		}
		else if ( m.n[2] ) {
			m.e->setCNodes( m.n[0]->eqId(), m.n[1]->eqId(), m.n[2]->eqId() );
		}
		else if ( m.n[1] ) {
			m.e->setCNodes( m.n[0]->eqId(), m.n[1]->eqId() );
		}
		else if ( m.n[0] ) {
			m.e->setCNodes( m.n[0]->eqId() );
		}
	}
	
	for ( ElementMapList::iterator it = m_elementMapList.begin(); it != end; ++it )
	{
		(*it).e->add_map();
	}
}


ECNode * Component::createPin( double x, double y, int orientation, const TQString & name )
{
	return dynamic_cast<ECNode*>( createNode( x, y, orientation, name, Node::ec_pin ) );
}


//BEGIN class ElementMap
ElementMap::ElementMap()
{
	e = 0;
	for ( int i = 0; i < 4; ++i )
		n[i] = 0;
}
//END class ElementMap


#include "component.moc"