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/***************************************************************************
* 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 "demultiplexer.h"
#include "logic.h"
#include "libraryitem.h"
#include <kiconloader.h>
#include <klocale.h>
#include <cmath>
Item* Demultiplexer::construct( ItemDocument *itemDocument, bool newItem, const char *id )
{
return new Demultiplexer( (ICNDocument*)itemDocument, newItem, id );
}
LibraryItem* Demultiplexer::libraryItem()
{
return new LibraryItem(
"ec/demultiplexer",
i18n("Demultiplexer"),
i18n("Integrated Circuits"),
"ic1.png",
LibraryItem::lit_component,
Demultiplexer::construct
);
}
Demultiplexer::Demultiplexer( ICNDocument *icnDocument, bool newItem, const char *id )
: Component( icnDocument, newItem, id ? id : "demultiplexer" )
{
m_name = i18n("Demultiplexer");
m_desc = i18n("Seperates the input data stream into components. The value of the input is passed to the \"X\" output selected by the binary number given by the \"A\" inputs.");
m_input = 0l;
createProperty( "addressSize", Variant::Type::Int );
property("addressSize")->setCaption( i18n("Address Size") );
property("addressSize")->setMinValue(1);
property("addressSize")->setMaxValue(8);
property("addressSize")->setValue(1);
// For backwards compatibility
createProperty( "numInput", Variant::Type::Int );
property("numInput")->setMinValue(-1);
property("numInput")->setValue(-1);
property("numInput")->setHidden(true);
}
Demultiplexer::~Demultiplexer()
{
}
void Demultiplexer::dataChanged()
{
if ( hasProperty("numInput") && dataInt("numInput") != -1 )
{
int addressSize = int( std::ceil( std::log( (double)dataInt("numInput") ) / std::log(2.0) ) );
property("numInput")->setValue(-1);
if ( addressSize < 1 )
addressSize = 1;
else if ( addressSize > 8 )
addressSize = 8;
// This function will get called again when we set the value of numInput
property("addressSize")->setValue(addressSize);
return;
}
if ( hasProperty("numInput") )
{
m_variantData["numInput"]->deleteLater();
m_variantData.remove("numInput");
}
initPins( unsigned(dataInt("addressSize")) );
}
void Demultiplexer::inStateChanged( bool /*state*/ )
{
unsigned long long pos = 0;
for ( unsigned i = 0; i < m_aLogic.size(); ++i )
{
if ( m_aLogic[i]->isHigh() )
pos += 1 << i;
}
for ( unsigned i = 0; i < m_xLogic.size(); ++i )
m_xLogic[i]->setHigh( (pos == i) && m_input->isHigh() );
}
void Demultiplexer::initPins( unsigned newAddressSize )
{
unsigned oldAddressSize = m_aLogic.size();
unsigned long long oldXLogicCount = m_xLogic.size();
unsigned long long newXLogicCount = 1 << newAddressSize;
if ( newXLogicCount == oldXLogicCount )
return;
TQStringList pins;
for ( unsigned i=0; i<newAddressSize; ++i )
pins += "A"+TQString::number(i);
for ( unsigned i=newAddressSize; i<(newXLogicCount+(newXLogicCount%2))/2; ++i )
pins += "";
pins += "X";
for ( unsigned i=(newXLogicCount+(newXLogicCount%2))/2+1; i<newXLogicCount; ++i )
pins += "";
for ( int i=newXLogicCount-1; i>=0; --i )
pins += "X"+TQString::number(i);
initDIPSymbol( pins, 64 );
initDIP(pins);
ECNode *node;
if (!m_input)
{
node = ecNodeWithID("X");
m_input = createLogicIn(node);
m_input->setCallback( this, (CallbackPtr)(&Demultiplexer::inStateChanged) );
}
if ( newXLogicCount > oldXLogicCount )
{
m_xLogic.resize(newXLogicCount);
for ( unsigned i = oldXLogicCount; i < newXLogicCount; ++i )
{
node = ecNodeWithID("X"+TQString::number(i));
m_xLogic.insert( i, createLogicOut(node,false) );
}
m_aLogic.resize(newAddressSize);
for ( unsigned i = oldAddressSize; i < newAddressSize; ++i )
{
node = ecNodeWithID("A"+TQString::number(i));
m_aLogic.insert( i, createLogicIn(node) );
m_aLogic[i]->setCallback( this, (CallbackPtr)(&Demultiplexer::inStateChanged) );
}
}
else
{
for ( unsigned i = newXLogicCount; i < oldXLogicCount; ++i )
{
TQString id = "X"+TQString::number(i);
removeDisplayText(id);
removeElement( m_xLogic[i], false );
removeNode(id);
}
m_xLogic.resize(newXLogicCount);
for ( unsigned i = newAddressSize; i < oldAddressSize; ++i )
{
TQString id = "A"+TQString::number(i);
removeDisplayText(id);
removeElement( m_aLogic[i], false );
removeNode(id);
}
m_aLogic.resize(newAddressSize);
}
}
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