2004-07-01 05:38:48 -04:00
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#!/usr/bin/env ruby
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require 'tk'
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require 'tkextlib/vu'
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#######################################
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puts "Show off barchart and dial widgets"
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speed = TkVariable.new(0)
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dial = Tk::Vu::Dial.new(:resolution=>0.001, :from=>-0.1, :to=>0.1,
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2004-10-11 00:51:21 -04:00
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:showvalue=>true, :minortickinterval=>0.01,
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:tickinterval=>0.1, :radius=>50, :label=>"Dial",
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:beginangle=>-20, :endangle=>260, :dialcolor=>'red3',
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:active=>'red2', :variable=>speed)
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2004-07-01 05:38:48 -04:00
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bar = Tk::Vu::Bargraph.new(:from=>0, :to=>100, :relief=>:groove,
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2004-10-11 00:51:21 -04:00
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:border=>2, :label=>"Bar Chart")
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2004-07-01 05:38:48 -04:00
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#######################################
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green = 25
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blue = 50
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purple = 75
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current = 50
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def rand_bool
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end
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update = TkTimer.new(200, -1, proc{
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2004-10-11 00:51:21 -04:00
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if (rand() - 0.5 + speed.numeric * 3) > 0
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current += 1
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else
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current -= 1
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end
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bar.set(current)
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if current < green
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current = 100 if current <= 0
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bar[:barcolor] = 'green'
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elsif current < blue
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bar[:barcolor] = 'blue'
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elsif current < purple
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bar[:barcolor] = 'purple'
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else
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bar[:barcolor] = 'red'
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current = 0 if current >= 100
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end
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})
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2004-07-01 05:38:48 -04:00
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#######################################
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gobar = TkButton.new(:text=>"Start", :command=>proc{update.start})
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nobar = TkButton.new(:text=>"Stop", :command=>proc{update.stop})
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quit = TkButton.new(:text=>"Exit", :command=>proc{exit})
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Tk.grid('x', gobar, :sticky=>:ew, :padx=>4, :pady=>4)
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Tk.grid(dial, bar, :sticky=>:news)
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Tk.grid('x', nobar, :sticky=>:ew, :padx=>4, :pady=>4)
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Tk.grid(quit, '-', '-', :sticky=>:ew, :padx=>4, :pady=>4)
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Tk.root.grid_columnconfigure(2, :weight=>1)
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Tk.root.grid_rowconfigure(1, :weight=>1)
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2004-10-11 00:51:21 -04:00
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2004-07-01 05:38:48 -04:00
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#######################################
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Tk.mainloop
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