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