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# labelframe.rb
#
# This demonstration script creates a toplevel window containing
# several labelframe widgets.
#
# based on "Id: labelframe.tcl,v 1.2 2001/10/30 11:21:50 dkf Exp"
if defined?($labelframe_demo) && $labelframe_demo
$labelframe_demo.destroy
$labelframe_demo = nil
end
$labelframe_demo = TkToplevel.new {|w|
title("Labelframe Demonstration")
iconname("labelframe")
positionWindow(w)
}
base_frame = TkFrame.new($labelframe_demo).pack(:fill=>:both, :expand=>true)
# Some information
TkLabel.new(base_frame,
:font=>$font, :wraplength=>'4i', :justify=>:left,
:text=><<EOL).pack(:side=>:top)
Labelframes are used to group related widgets together. \
The label may be either plain text or another widget. \
If your Tk library linked to Ruby doesn't include a 'labelframe' widget, \
this demo doesn't work. Please use later version of Tk \
which supports a 'labelframe' widget.
EOL
# The bottom buttons
TkFrame.new(base_frame){|f|
pack(:side=>:bottom, :fill=>:x, :pady=>'2m')
TkButton.new(f, :text=>'Dismiss', :width=>15, :command=>proc{
$labelframe_demo.destroy
$labelframe_demo = nil
}).pack(:side=>:left, :expand=>true)
TkButton.new(f, :text=>'See Code', :width=>15, :command=>proc{
showCode 'labelframe'
}).pack(:side=>:left, :expand=>true)
}
# Demo area
w = TkFrame.new(base_frame).pack(:side=>:bottom, :fill=>:both,
:expand=>true)
# A group of radiobuttons in a labelframe
TkLabelFrame.new(w, :text=>'Value',
:padx=>2, :pady=>2) {|f|
grid(:row=>0, :column=>0, :pady=>'2m', :padx=>'2m')
v = TkVariable.new
(1..4).each{|i|
TkRadiobutton.new(f, :text=>"This is value #{i}",
:variable=>v, :value=>i) {
pack(:side=>:top, :fill=>:x, :pady=>2)
}
}
}
# Using a label window to control a group of options.
$lfdummy = TkVariable.new(0)
def lfEnableButtons(w)
TkWinfo.children(w).each{|child|
next if child.path =~ /\.cb$/
if $lfdummy == 1
child.state(:normal)
else
child.state(:disabled)
end
}
end
TkLabelFrame.new(w, :pady=>2, :padx=>2){|f|
TkCheckButton.new(f, :widgetname=>'cb', :variable=>$lfdummy,
:text=>"Use this option.", :padx=>0) {|cb|
command proc{lfEnableButtons(f)}
f.labelwidget(cb)
}
grid(:row=>0, :column=>1, :pady=>'2m', :padx=>'2m')
%w(Option1 Option2 Option3).each{|str|
TkCheckbutton.new(f, :text=>str).pack(:side=>:top, :fill=>:x, :pady=>2)
}
lfEnableButtons(f)
}
TkGrid.columnconfigure(w, [0,1], :weight=>1)
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