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#!/usr/bin/env ruby
require 'tk'
require 'tkextlib/vu/charts'
#---USAGE
info = "...the heart of a Realtime Oscilloscope, where the PCIs
joystick port gives 4 digtal inputs and 4 analog 8 bit
values with an resolution of ~1 millisecond (!!!)
running Realtime Linux.
<p> creates DEMO.ps
<B1-Motion> see what happens"
puts info
#---GEOMETRY
geo_fr = [10, 10, 210, 180]
geo_ch0 = [10, 10, 210, 90]
geo_ch1 = [10, 90, 210, 180]
geo_t1 = [15, 88]
#---GUI
c = TkCanvas.new(:width=>220, :height=>190).pack(:fill=>:both, :expand=>true)
#---background
TkcRectangle.new(c, geo_fr, :width=>4, :fill=>'aquamarine3',
:tags=>['osc', 'frbg'])
#---channel 0
ch0 = Tk::Vu::TkcStripchart.new(c, geo_ch0,
:fill=>'', :jumpscroll=>false,
:outline=>'', :scaleline=>'',
:stripline=>'cyan', :tags=>['osc', 'ch0'])
#---channel 1
ch1 = Tk::Vu::TkcStripchart.new(c, geo_ch1,
:fill=>'', :jumpscroll=>0,
:outline=>'', :scaleline=>'',
:stripline=>'red', :tags=>['osc', 'ch1'])
#---frame
TkcRectangle.new(c, geo_fr, :width=>4, :tags=>['osc', 'frfg'])
#---position
txt1 = TkcText.new(c, geo_t1, :text=>"B1-Motion: X:%X\tY:%Y",
:anchor=>:nw, :tags=>['osc', 'txt1'])
#---BINDINGS
c.bind('B1-Motion', proc{|x, y, xx, yy|
ch0[:values] = x
ch1[:values] = y
txt1[:text] = "B1-Motion: X:#{xx}\tY:#{yy}"
}, '%x %y %X %Y')
Tk.root.bind('v', proc{
puts ch0[:values].join(' ')
puts ch0[:values].size
})
Tk.root.bind('p', proc{
c.postscript(:file=>'DEMO.ps')
puts "DEMO.ps printed"
})
Tk.root.bind('q', proc{exit})
#####################
Tk.mainloop
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