package LCDRange;
use Qt 2.0;
use Qt::signals 'valueChanged(int)';
use Qt::slots 'setValue(int)', 'setRange(int, int)';
@ISA = qw(Qt::Widget);
sub new {
    my $self = shift->SUPER::new(@_);
    my $lcd = Qt::LCDNumber->new(2, $self, 'lcd');
    $lcd->move(0, 0);
    my $sBar =
        Qt::ScrollBar->new(0, 99,                    # range
                           1, 10,                       # line/page steps
                           0,                           # initial value
                           Qt::ScrollBar::Horizontal,   # orientation
                           $self, 'scrollbar');
    $lcd->connect($sBar, 'valueChanged(int)', 'display(int)');
    $self->connect($sBar, 'valueChanged(int)', 'valueChanged(int)');
    @$self{'sBar', 'lcd'} = ($sBar, $lcd);
    return $self;
}
sub value { return shift->{'sBar'}->value() }
sub setValue {
    my $self = shift;
    my $value = shift;
    $self->{'sBar'}->setValue($value);
}
sub setRange {
    my $self = shift;
    my $minVal = shift;
    my $maxVal = shift;
    if($minVal < 0 || $maxVal > 99 || $minVal > $maxVal) {
        warn "LCDRange::setRange($minVal, $maxVal)
        Range must be 0..99
        and minVal must not be greater than maxVal";
        return;
    }
    $self->{'sBar'}->setRange($minVal, $maxVal);
}
sub resizeEvent {
    my $self = shift;
    my($sBar, $lcd) = @$self{'sBar', 'lcd'};
    $lcd->resize($self->width(), $self->height() - 16 - 5);
    $sBar->setGeometry(0, $lcd->height() + 5, $self->width(), 16);
}