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#!/bin/sh
# the next line restarts using wish \
exec wish "$0" "$@"
# timer --
# This script generates a counter with start and stop buttons.
label .counter -text 0.00 -relief raised -width 10 -padx 2m -pady 1m
button .start -text Start -command {
if {$stopped} {
set stopped 0
set startMoment [clock clicks -milliseconds]
tick
.stop configure -state normal
.start configure -state disabled
}
}
button .stop -text Stop -state disabled -command {
set stopped 1
.stop configure -state disabled
.start configure -state normal
}
pack .counter -side bottom -fill both
pack .start -side left -fill both -expand yes
pack .stop -side right -fill both -expand yes
set startMoment {}
set stopped 1
proc tick {} {
global startMoment stopped
if {$stopped} {return}
after 50 tick
set elapsedMS [expr {[clock clicks -milliseconds] - $startMoment}]
.counter config -text [format "%.2f" [expr {double($elapsedMS)/1000}]]
}
bind . <Control-c> {destroy .}
bind . <Control-q> {destroy .}
focus .
# Local Variables:
# mode: tcl
# End:
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