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# frozen_string_literal: false
# check.rb
#
# This demonstration script creates a toplevel window containing
# several checkbuttons.
#
# checkbutton widget demo (called by 'widget')
#
# toplevel widget
if defined?($check_demo) && $check_demo
$check_demo.destroy
$check_demo = nil
end
# demo toplevel widget
$check_demo = TkToplevel.new {|w|
title("Checkbutton Demonstration")
iconname("check")
positionWindow(w)
}
base_frame = TkFrame.new($check_demo).pack(:fill=>:both, :expand=>true)
# label
msg = TkLabel.new(base_frame) {
font $font
wraplength '4i'
justify 'left'
text "Three checkbuttons are displayed below. If you click on a button, it will toggle the button's selection state and set a Tcl variable to a value indicating the state of the checkbutton. Click the \"See Variables\" button to see the current values of the variables."
}
msg.pack('side'=>'top')
#
wipers = TkVariable.new(0)
brakes = TkVariable.new(0)
sober = TkVariable.new(0)
# frame
TkFrame.new(base_frame) {|frame|
TkButton.new(frame) {
text 'Dismiss'
command proc{
tmppath = $check_demo
$check_demo = nil
$showVarsWin[tmppath.path] = nil
tmppath.destroy
}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'Show Code'
command proc{showCode 'check'}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'See Variables'
command proc{
showVars(base_frame,
['wipers', wipers], ['brakes', brakes], ['sober', sober])
}
}.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
# checkbutton
[ TkCheckButton.new(base_frame, 'text'=>'Wipers OK', 'variable'=>wipers),
TkCheckButton.new(base_frame, 'text'=>'Brakes OK', 'variable'=>brakes),
TkCheckButton.new(base_frame, 'text'=>'Driver Sober', 'variable'=>sober)
].each{|w| w.relief('flat'); w.pack('side'=>'top', 'pady'=>2, 'anchor'=>'w')}
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