http://www.perlmonks.org?node_id=11132473

..I'm sorry.. I couldn't resist :)

perl -MTk -e "$w=tkinit;$w->optionAdd('*font','Courier 20 bold');$w->L
+abel(-textvariable=>\$n,-background=>'lavender')->pack;$w->repeat(100
+,sub{$n=scalar localtime time});MainLoop"

[download]

L*

PS minimalistic version

perl -MTk -e "$w=tkinit;$w->geometry('400x1');$w->repeat(100,sub{$w->configure(-title=>scalar localtime time)});MainLoop"

There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

Replies are listed 'Best First'.
Re: Stylish Tk clock -- oneliner
by Tux (Canon) on May 12, 2021 at 12:58 UTC

    Sorry too, I could not resist

    • Courier is never stylish
    • I prefer Linux/Unix quotation
    perl -MTk -e '$w=tkinit;$w->optionAdd("*font","{DejaVu Sans Mono} 20 b
+old");$w->Label(-textvariable=>\$n,-background=>"#f0fff0")->pack;$w->
+repeat(100,sub{$n=scalar localtime time});MainLoop'

    [download]

    Enjoy, Have FUN! H.Merijn
[reply]
[d/l]
      I prefer Linux/Unix quotation

      If you would both use q{} inside the Perl code then the users of the other O/S only need to change the outer quotes (the shell quotes). Just saying ;-)

      🦛

[reply]
[d/l]
      Courier is never stylish

      I beg to differ: courier is the epitomy of style

[reply]
Re: Stylish Tk clock -- oneliner
by choroba (Cardinal) on May 12, 2021 at 15:38 UTC
    You can use print to output a string, no need for Tk. This is what Tk makes possible: 
    #! /usr/bin/perl
use strict;
use warnings;

use Tk;

my $pi = 2 * atan2 1, 0;

sub clock {
    my ($c) = @_;
    my ($h, $m, $s) = (localtime)[2, 1, 0];
    $m += $s / 60;
    $h = 5 * ($h % 12) + $m / 12;

    draw($h, 3, 50, $c);
    draw($m, 2, 100, $c);
    draw($s, 1, 100, $c);
}

sub ftime {
    sprintf "%02d:%02d:%02d", (localtime)[2, 1, 0]
}

sub draw {
    my ($alpha, $w, $l, $c) = @_;
    my $my = ($alpha < 15 || $alpha > 45) ? -1 : 1;
    my $mx = $alpha > 30 ? -1 : 1;
    $alpha = $alpha * 2 * $pi / 60;
    my $x = $mx * $l * sin $alpha;
    my $y = $my * sqrt($l ** 2 - $x ** 2);
    $x = -$x if $alpha >= $pi;
    $c->createLine(100, 100, 100 + $x, 100 + $y,
                   -width => $w,
                   (-fill => 'grey') x ($w == 1));
}

my $mw = MainWindow->new(-height => 200,
                         -width  => 200,
                         -title  => ftime());
my $c = $mw->Canvas(-height => 200,
                    -width  => 200)->pack;


$mw->repeat(1000, sub {
    $c->delete('all');
    clock($c);
    $mw->configure(-title => ftime());
});

MainLoop();

    [download]
    One-linerification left as an exercise to the reader.

    map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]
[reply]
[d/l]
[select]

      Or just use Tk::Clock and have all of that and more in a one-liner :)

      $ perl -MTk -MTk::Clock -we'MainWindow->new->Clock->pack;MainLoop'

      So, that is my one-liner to have a fancy clock in Perl/Tk.


      Enjoy, Have FUN! H.Merijn
[reply]
[d/l]

Back to Cool Uses for Perl