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# radio.rb
#
# This demonstration script creates a toplevel window containing
# several radiobutton widgets.
#
# radiobutton widget demo (called by 'widget')
#
# toplevel widget
if defined?($radio_demo) && $radio_demo
$radio_demo.destroy
$radio_demo = nil
end
# demo toplevel widget
$radio_demo = TkToplevel.new {|w|
title("Radiobutton Demonstration")
iconname("radio")
positionWindow(w)
}
# label
msg = TkLabel.new($radio_demo) {
font $font
wraplength '4i'
justify 'left'
text "Two groups of radiobuttons are displayed below. If you click on a button then the button will become selected exclusively among all the buttons in its group. A Tcl variable is associated with each group to indicate which of the group's buttons is selected. Click the \"See Variables\" button to see the current values of the variables."
}
msg.pack('side'=>'top')
#
size = TkVariable.new
color = TkVariable.new
# frame
TkFrame.new($radio_demo) {|frame|
TkButton.new(frame) {
text 'Dismiss'
command proc{
tmppath = $radio_demo
$radio_demo = nil
$showVarsWin[tmppath.path] = nil
tmppath.destroy
}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'Show Code'
command proc{showCode 'radio'}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'See Variables'
command proc{
showVars($radio_demo, ['size', size], ['color', color])
}
}.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
# frame
f_left = TkFrame.new($radio_demo)
f_right = TkFrame.new($radio_demo)
f_left.pack('side'=>'left', 'expand'=>'yes', 'padx'=>'.5c', 'pady'=>'.5c')
f_right.pack('side'=>'left', 'expand'=>'yes', 'padx'=>'.5c', 'pady'=>'.5c')
# radiobutton
[10, 12, 18, 24].each {|sz|
TkRadioButton.new(f_left) {
text "Point Size #{sz}"
variable size
relief 'flat'
value sz
}.pack('side'=>'top', 'pady'=>2, 'anchor'=>'w')
}
['Red', 'Green', 'Blue', 'Yellow', 'Orange', 'Purple'].each {|col|
TkRadioButton.new(f_right) {
text col
variable color
relief 'flat'
value col.downcase
}.pack('side'=>'top', 'pady'=>2, 'anchor'=>'w')
}
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