view release on metacpan or  search on metacpan

lib/AAC/Pvoice/Input.pm  view on Meta::CPAN

{
    # BEWARE: $self is the wxWindow subclass the timer
    # belongs to!
    my ($self, $event) = @_;
    # do nothing if the device is not adremo or
    # if we're already running
    return if ($self->{monitorrun}                           || 
               (not $self->{input}->{next})                  || 
               (not $self->{input}->{select})                ||
               $self->{pause});
    # set the flag that we're checking the port
    $self->{monitorrun} = 1;
    $self->{pp} = Device::ParallelPort->new() if not $self->{pp};
    my $curvalue = $self->{pp}->get_status();
    if (not defined $curvalue)
    {
        # clear the flag that we're checking the port and return
        $self->{monitorrun} = 0;
        return
    }
    $self->{lastvalue} = 0 if not exists $self->{lastvalue};
    # if we detect a change...
    if ($curvalue != $self->{lastvalue})
    {
        unless ($curvalue & 0x40)
        {
            # if bit 6 is off it's a headmove to the right

lib/AAC/Pvoice/Input.pm  view on Meta::CPAN

        if ($curvalue & 0x80)
        {
            # if bit 7 is on (this bit is inverted), it's a headmove to the left
            # which will indicate a Select() event.
            $self->{input}->{select}->();
        }
    }
    # the current value becomes the last value
    $self->{lastvalue} = $curvalue if $curvalue;

    # clear the flag that we're checking the port
    $self->{monitorrun} = 0;
}


1;

__END__

=head1 NAME