File indexing completed on 2024-05-05 05:46:05

 /***************************************************************************
  *   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 "ecpotentiometer.h"
 #include "canvasitemparts.h"
 #include "ecnode.h"
 #include "libraryitem.h"
 #include "resistance.h"
 
 #include <KLocalizedString>
 #include <QPainter>
 #include <QStyle>
 
 Item *ECPotentiometer::construct(ItemDocument *itemDocument, bool newItem, const char *id)
 {
     return new ECPotentiometer(static_cast<ICNDocument *>(itemDocument), newItem, id);
 }
 
 LibraryItem *ECPotentiometer::libraryItem()
 {
     return new LibraryItem(QStringList(QString("ec/potentiometer")), i18n("Potentiometer"), i18n("Passive"), "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");
     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);
 
     QPolygon 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 TODO investigate parameter */);
     int base_y = _y + int(space * m_sliderProp);
 
     pa.translate(_x + 16, base_y);
 
     QColor c = m_p1->isSelected() ? m_selectedCol : Qt::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);
 }