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#!/usr/bin/env ruby
#
# sample script of Tk::OptionObj
#
require "tk"
optobj = Tk::OptionObj.new('foreground'=>'red', 'background'=>'black')
f = TkFrame.new.pack(:side=>:left, :anchor=>:n, :padx=>5, :pady=>30)
b1 = TkButton.new(f, :text=>'AAA').pack(:fill=>:x)
b2 = TkButton.new(f, :text=>'BBB').pack(:fill=>:x)
b3 = TkButton.new(f, :text=>'CCC').pack(:fill=>:x)
optobj.assign( b1,
[ b2, 'configure',
{ 'foreground'=>'background',
'background'=>'foreground' } ],
[ b3, nil,
{ 'foreground'=>'background',
'activeforeground'=>nil,
'background'=>['foreground', 'activeforeground'] } ] )
optobj.update('activeforeground'=>'yellow')
TkButton.new(f){
configure( optobj.assign(self) + {:text=>'DDD'} )
pack(:fill=>:x)
}
TkButton.new(f){
configure( optobj.assign([self, nil,
{'foreground'=>'activeforeground',
'background'=>'foreground',
'activeforeground'=>'background'}]) \
+ {:text=>'EEE', :relief=>:groove, :borderwidth=>5} )
pack(:fill=>:x)
}
optobj.notify # To apply the convert_key ( 3rd element of widget info
# (that is, {'foreground'=>'activeforeground', ,,, } )
# of the 'EEE' button
TkButton.new(f, :text=>'toggle',
:command=>proc{
fg = optobj['foreground']
bg = optobj['background']
optobj.configure('foreground'=>bg, 'background'=>fg)
}).pack(:fill=>:x, :pady=>10)
TkButton.new(f, :text=>'exit',
:command=>proc{exit}).pack(:fill=>:x, :pady=>10)
TkFrame.new{|f|
pack(:side=>:right, :expand=>true, :fill=>:both)
TkLabel.new(f, :text=>'source::').pack(:anchor=>:w)
TkFrame.new(f){|ff|
TkText.new(ff){
yscrollbar(TkScrollbar.new(ff){pack(:fill=>:y, :side=>:right)})
insert('end', File.read(__FILE__))
pack(:side=>:left, :expand=>true, :fill=>:both)
}
pack(:expand=>true, :fill=>:both)
}
}
Tk.mainloop
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