1#!/bin/sh
2# the next line restarts using wish \
3exec wish "$0" "$@"
4
5# timer --
6# This script generates a counter with start and stop buttons.
7#
8# SCCS: @(#) timer 1.6 96/02/16 10:49:20
9
10label .counter -text 0.00 -relief raised -width 10
11button .start -text Start -command {
12    if $stopped {
13	set stopped 0
14	tick
15    }
16}
17button .stop -text Stop -command {set stopped 1}
18pack .counter -side bottom -fill both
19pack .start -side left -fill both -expand yes
20pack .stop -side right -fill both -expand yes
21
22set seconds 0
23set hundredths 0
24set stopped 1
25
26proc tick {} {
27    global seconds hundredths stopped
28    if $stopped return
29    after 50 tick
30    set hundredths [expr $hundredths+5]
31    if {$hundredths >= 100} {
32	set hundredths 0
33	set seconds [expr $seconds+1]
34    }
35    .counter config -text [format "%d.%02d" $seconds $hundredths]
36}
37
38bind . <Control-c> {destroy .}
39bind . <Control-q> {destroy .}
40focus .
41