diff options
Diffstat (limited to 'src/electronics/components/ecpotentiometer.cpp')
-rw-r--r-- | src/electronics/components/ecpotentiometer.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/electronics/components/ecpotentiometer.cpp b/src/electronics/components/ecpotentiometer.cpp new file mode 100644 index 0000000..db0fedd --- /dev/null +++ b/src/electronics/components/ecpotentiometer.cpp @@ -0,0 +1,119 @@ +/*************************************************************************** + * 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); +} + + + |