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/***************************************************************************
* Copyright (C) 2003-2005 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 "ecnode.h"
#include "ecpotentiometer.h"
#include "libraryitem.h"
#include "resistance.h"
#include <klocale.h>
#include <qpainter.h>
#include <qstyle.h>
Item* ECPotentiometer::construct( ItemDocument *itemDocument, bool newItem, const char *id )
{
return new ECPotentiometer( (ICNDocument*)itemDocument, newItem, id );
}
LibraryItem* ECPotentiometer::libraryItem()
{
return new LibraryItem(
"ec/potentiometer",
i18n("Potentiometer"),
i18n("Discrete"),
"potentiometer.png",
LibraryItem::lit_component,
ECPotentiometer::construct );
}
ECPotentiometer::ECPotentiometer( ICNDocument *icnDocument, bool newItem, const char *id )
: Component( icnDocument, newItem, id ? id : "potentiometer" )
{
m_name = i18n("Potentiometer");
m_desc =i18n("Consists of a resistor connected to the end pins, with a central pin connected at an adjustable point along the resistor");
setSize( -16, -16, 40, 32 );
m_p1 = createPin( 32, 0, 180, "p1" );
m_sliderProp = 0.0;
m_resistance = 5000.;
m_r1 = createResistance( createPin( -8, -24, 90, "n1" ), m_p1, 1. );
m_r2 = createResistance( createPin( -8, 24, 270, "n2" ), m_p1, 1. );
Slider * s = addSlider( "slider", 0, 100, 5, 50, Qt::Vertical, QRect( 0, -16, 16, 32 ) );
m_pSlider = static_cast<QSlider*>(s->widget());
createProperty( "resistance", Variant::Type::Double );
property("resistance")->setCaption( i18n("Resistance") );
property("resistance")->setUnit( QChar(0x3a9) );
property("resistance")->setMinValue(1e-6);
property("resistance")->setValue(1e5);
addDisplayText( "res", QRect( -56, -8, 40, 16 ), "" );
}
ECPotentiometer::~ECPotentiometer()
{
}
void ECPotentiometer::dataChanged()
{
m_resistance = dataDouble("resistance");
QString display = QString::number( m_resistance / getMultiplier(m_resistance), 'g', 3 ) + getNumberMag(m_resistance) + QChar(0x3a9);
setDisplayText( "res", display );
sliderValueChanged( "slider", slider("slider")->value() );
}
void ECPotentiometer::sliderValueChanged( const QString &id, int newValue )
{
if ( id != "slider" )
return;
m_sliderProp = (newValue-50.0)/100.0;
m_r1->setResistance( m_resistance*(double)newValue/100. );
m_r2->setResistance( m_resistance*(double)(100.-newValue)/100. );
}
void ECPotentiometer::drawShape( QPainter &p )
{
initPainter(p);
int _x = int(x());
int _y = int(y());
p.drawRect( _x-14, _y-16, 12, 32 );
QPointArray pa(3);
pa[0] = QPoint( 0, 0 );
pa[1] = QPoint( 4, -3 );
pa[2] = QPoint( 4, 3 );
int space = m_pSlider->style().pixelMetric( QStyle::PM_SliderSpaceAvailable, m_pSlider );
int base_y = _y + (( angleDegrees() == 0 || angleDegrees() == 270 ) ? 1 : -1) * int( space * m_sliderProp );
pa.translate( _x+16, base_y );
QColor c = m_p1->isSelected() ? m_selectedCol : black;
p.setPen(c);
p.setBrush(c);
p.drawPolygon(pa);
p.drawLine( _x+20, base_y, _x+24, base_y );
p.drawLine( _x+24, base_y, _x+24, _y );
deinitPainter(p);
}
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