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|
#!/usr/bin/env ruby
#
# countdown timer
# usage: cd_timer min [, min ... ]
# ( e.g. cd_timer 0.5 1 3 5 10 )
#
require 'tk'
if ARGV.empty?
$stderr.puts 'Error:: No time arguments for counting down'
exit(1)
end
width = 10
TkButton.new(:text=>'exit',
:command=>proc{exit}).pack(:side=>:bottom, :fill=>:x)
b = TkButton.new(:text=>'start').pack(:side=>:top, :fill=>:x)
f = TkFrame.new(:relief=>:ridge, :borderwidth=>2).pack(:fill=>:x)
TkLabel.new(f, :relief=>:flat, :pady=>3,
:background=>'black', :foreground=>'white',
:text=>' elapsed: ').pack(:fill=>:x, :side=>:left, :expand=>true)
now = TkLabel.new(f, :width=>width, :relief=>:flat, :pady=>3, :anchor=>:w,
:background=>'black', :foreground=>'white',
:text=>'%4d:%02d.00' % [0, 0]).pack(:side=>:right)
timers = [ TkRTTimer.new(10){|tm|
t = (tm.return_value || 0) + 1
s, u = t.divmod(100)
m, s = s.divmod(60)
now.text('%4d:%02d.%02d' % [m, s, u])
t
}.set_start_proc(0, proc{
now.text('%4d:%02d.00' % [0,0])
now.foreground('white')
0
})
]
ARGV.collect{|arg| (Float(arg) * 60).to_i}.sort.each_with_index{|time, idx|
f = TkFrame.new(:relief=>:ridge, :borderwidth=>2).pack(:fill=>:x)
TkLabel.new(f, :relief=>:flat, :pady=>3,
:text=>' %4d:%02d --> ' % (time.divmod(60))).pack(:side=>:left)
l = TkLabel.new(f, :width=>width, :relief=>:flat, :pady=>3, :anchor=>:w,
:text=>'%4d:%02d' % (time.divmod(60))).pack(:side=>:right)
timers << TkRTTimer.new(1000){|tm|
t = (tm.return_value || time) - 1
if t < 0
l.text('%4d:%02d' % ((-t).divmod(60)))
else
l.text('%4d:%02d' % (t.divmod(60)))
end
if t.zero?
l.foreground('red')
idx.times{Tk.bell}
end
t
}.set_start_proc(0, proc{
l.text('%4d:%02d' % (time.divmod(60)))
l.foreground('black')
time
})
}
mode = :start
b.command(proc{
if mode == :start
timers.each{|timer| timer.restart}
b.text('reset')
mode = :reset
else
timers.each{|timer| timer.stop.reset}
b.text('start')
mode = :start
end
})
Tk.mainloop
|
