Initial commit of OpenSPARC T2 design and verification files.

[OpenSPARC-T2-DV] / tools / perl-5.8.0 / lib / site_perl / 5.8.0 / sun4-solaris / Tk / demos / widget_lib / ruler.pl

# ruler.pl

use subs qw/ruler_make_tab ruler_move_tab ruler_new_tab ruler_release_tab
           ruler_select_tab/;
use vars qw/$TOP/;

sub ruler {

   # Create a canvas demonstration consisting of a ruler displays a ruler
   # with tab stops that can be set individually.

   my($demo) = @_;
   $TOP = $MW->WidgetDemo(
       -name     => $demo,
       -text     => ['This canvas widget shows a mock-up of a ruler.  You can create tab stops by dragging them out of the well to the right of the ruler.  You can also drag existing tab stops.  If you drag a tab stop far enough up or down so that it turns dim, it will be deleted when you release the mouse button.', qw/-wraplength 5i/],
       -title    => 'Ruler Demonstration',
       -iconname => 'ruler',
   );

   my $c = $TOP->Canvas(qw/-width 14.8c -height 2.5c/);
   $c->pack(qw/-side top -fill x/);

   my %rinfo;                  # ruler information hash
   $rinfo{grid} = '.25c';
   $rinfo{left} = $c->fpixels('1c');
   $rinfo{right} = $c->fpixels('13c');
   $rinfo{top} = $c->fpixels('1c');
   $rinfo{bottom} = $c->fpixels('1.5c');
   $rinfo{size} = $c->fpixels('.2c');
   $rinfo{normalStyle} = [qw/-fill black/];
   if ($TOP->depth > 1) {
       $rinfo{activeStyle} = [qw/-fill red -stipple/ => undef];
       $rinfo{deleteStyle} = [
           -fill    => 'red',  
           -stipple => '@'.Tk->findINC('demos/images/grey.25'),
       ];
   } else {
       $rinfo{activeStyle} = [qw/-fill black -stipple/ => undef];
       $rinfo{deleteStyle} = [
           -fill    => 'black',
           -stipple => '@'.Tk->findINC('demos/images/grey.25'),
       ];
   }

   $c->create(qw/line 1c 0.5c 1c 1c 13c 1c 13c 0.5c -width 1/);
   my $i;
   for ($i = 0; $i < 12; $i++) {
       my $x = $i+1;
       $c->create('line', "$x.c",  '1c', "$x.c",  '0.6c', -width => 1);
       $c->create('line', "$x.25c", '1c', "$x.25c", '0.8c', -width => 1);
       $c->create('line', "$x.5c",  '1c', "$x.5c",  '0.7c', -width => 1);
       $c->create('line', "$x.75c", '1c', "$x.75c", '0.8c', -width => 1);
       $c->create('text', "$x.15c", '.75c',-text => $i, -anchor => 'sw');
   }
   $c->addtag('well', 'withtag', $c->create(qw/rect 13.2c 1c 13.8c 0.5c
       -outline black -fill/, ($c->configure(-bg))[4]));
   $c->addtag('well', 'withtag', ruler_make_tab($c, $c->pixels('13.5c'),
       $c->pixels('.65c'), \%rinfo));

   $c->bind('well', '<1>' => [\&ruler_new_tab, \%rinfo]);
   $c->bind('tab', '<1>' => [\&ruler_select_tab, \%rinfo]);
   $c->Tk::bind('<B1-Motion>' => [\&ruler_move_tab, \%rinfo]);
   $c->Tk::bind('<Any-ButtonRelease-1>', [\&ruler_release_tab, \%rinfo]);

} # end ruler

sub ruler_make_tab {

   my($c, $x, $y, $rinfo) = @_;

   return $c->create('polygon', $x, $y, $x+$rinfo->{size}, $y+$rinfo->{size},
                                        $x-$rinfo->{size}, $y+$rinfo->{size});

} # end ruler_make_tab

sub ruler_move_tab {

   my($c, $rinfo) = @_;

   return if not defined $c->find('withtag', 'active');
   my $e = $c->XEvent;
   my($x, $y) = ($e->x, $e->y);
   my $cx = $c->canvasx($x, $rinfo->{grid});
   my $cy = $c->canvasy($y);
   if ($cx < $rinfo->{left}) {
       $cx =  $rinfo->{left};
   }
   if ($cx > $rinfo->{right}) {
       $cx =  $rinfo->{right};
   }
   if (($cy >= $rinfo->{top}) and ($cy <= $rinfo->{bottom})) {
       $cy =  $rinfo->{top} + 2;
       $c->itemconfigure('active', @{$rinfo->{activeStyle}});
   } else {
       $cy =  $cy - $rinfo->{size} - 2;
       $c->itemconfigure('active', @{$rinfo->{deleteStyle}});
   }
   $c->move('active',  $cx-$rinfo->{'x'}, $cy-$rinfo->{'y'});
   $rinfo->{'x'} = $cx;
   $rinfo->{'y'} = $cy;

} # end ruler_move_tab

sub ruler_new_tab {
   
   my($c, $rinfo) = @_;

   my $e = $c->XEvent;
   my($x, $y) = ($e->x, $e->y);
   $c->addtag('active', 'withtag', ruler_make_tab($c, $x, $y, $rinfo));
   $c->addtag('tab', 'withtag', 'active');
   $rinfo->{'x'} = $x;
   $rinfo->{'y'} = $y;
   ruler_move_tab($c, $rinfo);

} # end ruler_new_tab

sub ruler_release_tab {

   my($c, $rinfo) = @_;

   return if not defined $c->find('withtag', 'active');
   if ($rinfo->{'y'} != $rinfo->{top} + 2) {
       $c->delete('active');
   } else {
       $c->itemconfigure('active', @{$rinfo->{normalStyle}});
       $c->dtag('active');
   }

} # end ruler_release_tab

sub ruler_select_tab {

   my($c, $rinfo) = @_;

   my $e = $c->XEvent;
   my($x, $y) = ($e->x, $e->y);
   $rinfo->{'x'} = $c->canvasx($x, $rinfo->{grid});
   $rinfo->{'y'} = $rinfo->{top} + 2;
   $c->addtag('active', 'withtag', 'current');
   $c->itemconfigure('active', @{$rinfo->{activeStyle}});
   $c->raise('active');

} # end ruler_select_tab

1;