tools/perl-5.8.0/lib/site_perl/5.8.0/sun4-solaris/auto/Tk/Scrollbar/ScrlByPages.al

# NOTE: Derived from ../blib/lib/Tk/Scrollbar.pm.
# Changes made here will be lost when autosplit is run again.
# See AutoSplit.pm.
package Tk::Scrollbar;

#line 333 "../blib/lib/Tk/Scrollbar.pm (autosplit into ../blib/lib/auto/Tk/Scrollbar/ScrlByPages.al)"
# tkScrlByPages --
# This procedure tells the scrollbar's associated widget to scroll up
# or down by a given number of screenfuls.  It notifies the associated
# widget in different ways for old and new command syntaxes.
#
# Arguments:
# w -           The scrollbar widget.
# orient -      Which kinds of scrollbars this applies to:  "h" for
#               horizontal, "v" for vertical, "hv" for both.
# amount -      How many screens to scroll:  typically 1 or -1.

sub ScrlByPages
{
 my $w = shift;
 my $orient = shift;
 my $amount = shift;
 my $cmd    = $w->cget('-command');
 return unless (defined $cmd);
 return if (index($orient,substr($w->cget('-orient'),0,1)) < 0);
 my @info = $w->get;
 if (@info == 2)
  {
   $cmd->Call('scroll',$amount,'pages');
  }
 else
  {
   $cmd->Call($info[2]+$amount*($info[1]-1));
  }
}

# end of Tk::Scrollbar::ScrlByPages
1;