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# radio3.rb
#
# This demonstration script creates a toplevel window containing
# several radiobutton widgets.
#
# radiobutton widget demo (called by 'widget')
#
# toplevel widget
if defined?($radio3_demo) && $radio3_demo
$radio3_demo.destroy
$radio3_demo = nil
end
# demo toplevel widget
$radio3_demo = TkToplevel.new {|w|
title("Radiobutton Demonstration 3")
iconname("radio3")
positionWindow(w)
}
base_frame = TkFrame.new($radio3_demo).pack(:fill=>:both, :expand=>true)
# label
msg = TkLabel.new(base_frame) {
font $font
wraplength '5i'
justify 'left'
text "Three groups of radiobuttons are displayed below. If you click on a button then the button will become selected exclusively among all the buttons in its group. A Tcl variable is associated with each group to indicate which of the group's buttons is selected. When the 'Tristate' button is pressed, the radio buttons will display the tri-state mode. Selecting any radio button will return the buttons to their respective on/off state. Click the \"See Variables\" button to see the current values of the variables."
}
msg.grid(:row=>0, :column=>0, :columnspan=>3, :sticky=>'nsew')
# variable
size = TkVariable.new
color = TkVariable.new
align = TkVariable.new
# frame
TkFrame.new(base_frame) {|frame|
TkGrid(TkFrame.new(frame, :height=>2, :relief=>:sunken, :bd=>2),
:columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
TkGrid('x',
TkButton.new(frame, :text=>'See Variables',
:image=>$image['view'], :compound=>:left,
:command=>proc{
showVars(base_frame, ['size', size],
['color', color], ['compound', align])
}),
TkButton.new(frame, :text=>'See Code',
:image=>$image['view'], :compound=>:left,
:command=>proc{showCode 'radio3'}),
TkButton.new(frame, :text=>'Dismiss',
:image=>$image['delete'], :compound=>:left,
:command=>proc{
tmppath = $radio3_demo
$radio3_demo = nil
$showVarsWin[tmppath.path] = nil
tmppath.destroy
}),
:padx=>4, :pady=>4)
frame.grid_columnconfigure(0, :weight=>1)
TkGrid(frame, :row=>3, :column=>0, :columnspan=>3, :sticky=>'nsew')
}
# frame
f_left = TkLabelFrame.new(base_frame, 'text'=>'Point Size',
'pady'=>2, 'padx'=>2)
f_mid = TkLabelFrame.new(base_frame, 'text'=>'Color',
'pady'=>2, 'padx'=>2)
f_right = TkLabelFrame.new(base_frame, 'text'=>'Alignment',
'pady'=>2, 'padx'=>2)
f_left .grid('column'=>0, 'row'=>1, 'pady'=>'.5c', 'padx'=>'.5c', 'rowspan'=>2)
f_mid .grid('column'=>1, 'row'=>1, 'pady'=>'.5c', 'padx'=>'.5c', 'rowspan'=>2)
f_right.grid('column'=>2, 'row'=>1, 'pady'=>'.5c', 'padx'=>'.5c')
TkButton.new(base_frame, 'text'=>'Tristate',
'command'=>proc{size.value = 'multi'; color.value = 'multi'}){
grid('column'=>2, 'row'=>2, 'pady'=>'.5c', 'padx'=>'.5c')
}
# radiobutton
[10, 12, 14, 18, 24].each {|sz|
TkRadioButton.new(f_left) {
text "Point Size #{sz}"
variable size
relief 'flat'
value sz
tristatevalue 'multi'
}.pack('side'=>'top', 'pady'=>2, 'anchor'=>'w', 'fill'=>'x')
}
['Red', 'Green', 'Blue', 'Yellow', 'Orange', 'Purple'].each {|col|
TkRadioButton.new(f_mid) {
text col
variable color
relief 'flat'
value col.downcase
anchor 'w'
tristatevalue 'multi'
command proc{f_mid.fg(color.value)}
}.pack('side'=>'top', 'pady'=>2, 'fill'=>'x')
}
# label = TkLabel.new(f_right, 'text'=>'Label', 'bitmap'=>'questhead',
label = Tk::Label.new(f_right, 'text'=>'Label', 'bitmap'=>'questhead',
'compound'=>'left')
label.configure('width'=>TkWinfo.reqwidth(label), 'compound'=>'top')
label.height(TkWinfo.reqheight(label))
a_btn = ['Top', 'Left', 'Right', 'Bottom'].collect{|a|
TkRadioButton.new(f_right, 'text'=>a, 'variable'=>align, 'relief'=>'flat',
'value'=>a.downcase, 'indicatoron'=>0, 'width'=>7,
'command'=>proc{label.compound(align.value)})
}
Tk.grid('x', a_btn[0])
Tk.grid(a_btn[1], label, a_btn[2])
Tk.grid('x', a_btn[3])
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