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# spin.rb --
#
# This demonstration script creates several spinbox widgets.
#
# based on Tcl/Tk8.4.4 widget demos
if defined?($spin_demo) && $spin_demo
$spin_demo.destroy
$spin_demo = nil
end
$spin_demo = TkToplevel.new {|w|
title("Spinbox Demonstration")
iconname("spin")
positionWindow(w)
}
base_frame = TkFrame.new($spin_demo).pack(:fill=>:both, :expand=>true)
TkLabel.new(base_frame,
:font=>$font, :wraplength=>'5i', :justify=>:left,
:text=><<EOL).pack(:side=>:top)
Three different spin-boxes are displayed below. \
You can add characters by pointing, clicking and typing. \
The normal Motif editing characters are supported, along with \
many Emacs bindings. For example, Backspace and Control-h \
delete the character to the left of the insertion cursor and \
Delete and Control-d delete the chararacter to the right of the \
insertion cursor. For values that are too large to fit in the \
window all at once, you can scan through the value by dragging \
with mouse button2 pressed. Note that the first spin-box will \
only permit you to type in integers, and the third selects from \
a list of Australian cities.
If your Tk library linked to Ruby doesn't include a 'spinbox' widget, \
this demo doesn't work. Please use later version of Tk \
which supports a 'spinbox' widget.
EOL
TkFrame.new(base_frame){|f|
pack(:side=>:bottom, :fill=>:x, :pady=>'2m')
TkButton.new(f, :text=>'Dismiss', :width=>15, :command=>proc{
$spin_demo.destroy
$spin_demo = nil
}).pack(:side=>:left, :expand=>true)
TkButton.new(f, :text=>'See Code', :width=>15, :command=>proc{
showCode 'spin'
}).pack(:side=>:left, :expand=>true)
}
australianCities = [
'Canberra', 'Sydney', 'Melbourne', 'Perth', 'Adelaide',
'Brisbane', 'Hobart', 'Darwin', 'Alice Springs'
]
[
TkSpinbox.new(base_frame, :from=>1, :to=>10, :width=>10, :validate=>:key,
:validatecommand=>[
proc{|s| s == '' || /^[+-]?\d+$/ =~ s }, '%P'
]),
TkSpinbox.new(base_frame, :from=>0, :to=>3, :increment=>0.5,
:format=>'%05.2f', :width=>10),
TkSpinbox.new(base_frame, :values=>australianCities, :width=>10)
].each{|sbox| sbox.pack(:side=>:top, :pady=>5, :padx=>10)}
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