103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
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#include "wheelbox.h"
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#include <qwt_wheel.h>
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#include <qlcdnumber.h>
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#include <qlabel.h>
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#include <qlayout.h>
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#include <qevent.h>
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#include <qapplication.h>
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class Wheel: public QwtWheel
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{
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public:
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Wheel( WheelBox *parent ):
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QwtWheel( parent )
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{
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setFocusPolicy( Qt::WheelFocus );
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parent->installEventFilter( this );
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}
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virtual bool eventFilter( QObject *object, QEvent *event )
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{
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if ( event->type() == QEvent::Wheel )
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{
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const QWheelEvent *we = static_cast<QWheelEvent *>( event );
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QWheelEvent wheelEvent( QPoint( 5, 5 ), we->delta(),
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we->buttons(), we->modifiers(),
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we->orientation() );
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QApplication::sendEvent( this, &wheelEvent );
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return true;
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}
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return QwtWheel::eventFilter( object, event );
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}
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};
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WheelBox::WheelBox( const QString &title,
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double min, double max, double stepSize, QWidget *parent ):
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QWidget( parent )
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{
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d_number = new QLCDNumber( this );
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d_number->setSegmentStyle( QLCDNumber::Filled );
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d_number->setAutoFillBackground( true );
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d_number->setFixedHeight( d_number->sizeHint().height() * 2 );
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d_number->setFocusPolicy( Qt::WheelFocus );
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QPalette pal( Qt::black );
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pal.setColor( QPalette::WindowText, Qt::green );
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d_number->setPalette( pal );
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d_wheel = new Wheel( this );
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d_wheel->setOrientation( Qt::Vertical );
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d_wheel->setInverted( true );
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d_wheel->setRange( min, max );
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d_wheel->setSingleStep( stepSize );
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d_wheel->setPageStepCount( 5 );
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d_wheel->setFixedHeight( d_number->height() );
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d_number->setFocusProxy( d_wheel );
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QFont font( "Helvetica", 10 );
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font.setBold( true );
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d_label = new QLabel( title, this );
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d_label->setFont( font );
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QHBoxLayout *hLayout = new QHBoxLayout;
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hLayout->setContentsMargins( 0, 0, 0, 0 );
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hLayout->setSpacing( 2 );
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hLayout->addWidget( d_number, 10 );
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hLayout->addWidget( d_wheel );
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QVBoxLayout *vLayout = new QVBoxLayout( this );
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vLayout->addLayout( hLayout, 10 );
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vLayout->addWidget( d_label, 0, Qt::AlignTop | Qt::AlignHCenter );
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connect( d_wheel, SIGNAL( valueChanged( double ) ),
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d_number, SLOT( display( double ) ) );
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connect( d_wheel, SIGNAL( valueChanged( double ) ),
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this, SIGNAL( valueChanged( double ) ) );
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}
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void WheelBox::setTheme( const QColor &color )
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{
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d_wheel->setPalette( color );
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}
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QColor WheelBox::theme() const
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{
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return d_wheel->palette().color( QPalette::Window );
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}
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void WheelBox::setValue( double value )
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{
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d_wheel->setValue( value );
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d_number->display( value );
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}
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double WheelBox::value() const
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{
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return d_wheel->value();
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}
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