ruby--ruby/ext/tk/sample/demos-en/menu.rb

#
# menus widget demo (called by 'widget')
#

# toplevel widget
if defined?($menu_demo) && $menu_demo
  $menu_demo.destroy
  $menu_demo = nil
end

# demo toplevel widget
$menu_demo = TkToplevel.new {|w|
  title("File Selection Dialogs")
  iconname("menu")
  positionWindow(w)
}

base_frame = TkFrame.new($menu_demo).pack(:fill=>:both, :expand=>true)

# menu frame
$menu_frame = TkFrame.new(base_frame, 'relief'=>'raised', 'bd'=>2)
$menu_frame.pack('side'=>'top', 'fill'=>'x')

begin
  windowingsystem = Tk.windowingsystem()
rescue
  windowingsystem = ""
end

# label
TkLabel.new(base_frame,'font'=>$font,'wraplength'=>'4i','justify'=>'left') {
  if $tk_platform['platform'] == 'macintosh' ||
      windowingsystem == "classic" || windowingsystem == "aqua"
    text("This window contains a menubar with cascaded menus.  You can invoke entries with an accelerator by typing Command+x, where \"x\" is the character next to the command key symbol. The rightmost menu can be torn off into a palette by dragging outside of its bounds and releasing the mouse.")
  else
    text("This window contains a menubar with cascaded menus.  You can post a menu from the keyboard by typing Alt+x, where \"x\" is the character underlined on the menu.  You can then traverse among the menus using the arrow keys.  When a menu is posted, you can invoke the current entry by typing space, or you can invoke any entry by typing its underlined character.  If a menu entry has an accelerator, you can invoke the entry without posting the menu just by typing the accelerator. The rightmost menu can be torn off into a palette by selecting the first item in the menu.")
  end
}.pack('side'=>'top')

# frame
TkFrame.new(base_frame) {|frame|
  TkButton.new(frame) {
    text 'Dismiss'
    command proc{
      tmppath = $menu_demo
      $menu_demo = nil
      tmppath.destroy
    }
  }.pack('side'=>'left', 'expand'=>'yes')

  TkButton.new(frame) {
    text 'Show Code'
    command proc{showCode 'menu'}
  }.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')

# menu
TkMenubutton.new($menu_frame, 'text'=>'File', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m, 'tearoff'=>false) {|file_menu|
    m.configure('menu'=>file_menu)
    add('command', 'label'=>'Open...', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "Open..." entry'})
    add('command', 'label'=>'New', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "New" entry'})
    add('command', 'label'=>'Save', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "Save" entry'})
    add('command', 'label'=>'Save As...', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "Save As..." entry'})
    add('separator')
    add('command', 'label'=>'Print Setup...', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "Print Setup..." entry'})
    add('command', 'label'=>'Print...', 'command'=>proc{fail 'this is just a demo: no action has been defined for the "Print..." entry'})
    add('separator')
    add('command', 'label'=>'Dismiss Menus Demo', 'command'=>proc{$menu_demo.destroy})
  }
}

if $tk_platform['platform'] == 'macintosh' ||
    windowingsystem == "classic" || windowingsystem == "aqua"
  modifier = 'Command'
elsif $tk_platform['platform'] == 'windows'
  modifier = 'Control'
else
  modifier = 'Meta'
end

TkMenubutton.new($menu_frame, 'text'=>'Basic', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m, 'tearoff'=>false) {|basic_menu|
    m.configure('menu'=>basic_menu)
    add('command', 'label'=>'Long entry that does nothing')
    ['A','B','C','D','E','F','G'].each{|c|
      add('command', 'label'=>"Print letter \"#{c}\"",
          'underline'=>14, 'accelerator'=>"Meta+#{c}",
          'command'=>proc{print c,"\n"}, 'accelerator'=>"#{modifier}+#{c}")
      $menu_demo.bind("#{modifier}-#{c.downcase}", proc{print c,"\n"})
    }
  }
}

TkMenubutton.new($menu_frame, 'text'=>'Cascades', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m, 'tearoff'=>false) {|cascade_menu|
    m.configure('menu'=>cascade_menu)
    add('command', 'label'=>'Print hello',
        'command'=>proc{print "Hello\n"},
        'accelerator'=>"#{modifier}+H", 'underline'=>6)
    $menu_demo.bind("#{modifier}-h", proc{print "Hello\n"})
    add('command', 'label'=>'Print goodbye',
        'command'=>proc{print "Goodbye\n"},
        'accelerator'=>"#{modifier}+G", 'underline'=>6)
    $menu_demo.bind("#{modifier}-g", proc{print "Goodbye\n"})

    TkMenu.new(cascade_menu, 'tearoff'=>false) {|cascade_check|
      cascade_menu.add('cascade', 'label'=>'Check buttons',
                       'menu'=>cascade_check, 'underline'=>0)
      oil = TkVariable.new(0)
      add('check', 'label'=>'Oil checked', 'variable'=>oil)
      trans = TkVariable.new(0)
      add('check', 'label'=>'Transmission checked', 'variable'=>trans)
      brakes = TkVariable.new(0)
      add('check', 'label'=>'Brakes checked', 'variable'=>brakes)
      lights = TkVariable.new(0)
      add('check', 'label'=>'Lights checked', 'variable'=>lights)
      add('separator')
      add('command', 'label'=>'Show current values',
          'command'=>proc{showVars($menu_demo,
                                   ['oil', oil],
                                   ['trans', trans],
                                   ['brakes', brakes],
                                   ['lights', lights])} )
      invoke 1
      invoke 3
    }

    TkMenu.new(cascade_menu, 'tearoff'=>false) {|cascade_radio|
      cascade_menu.add('cascade', 'label'=>'Radio buttons',
                       'menu'=>cascade_radio, 'underline'=>0)
      pointSize = TkVariable.new
      add('radio', 'label'=>'10 point', 'variable'=>pointSize, 'value'=>10)
      add('radio', 'label'=>'14 point', 'variable'=>pointSize, 'value'=>14)
      add('radio', 'label'=>'18 point', 'variable'=>pointSize, 'value'=>18)
      add('radio', 'label'=>'24 point', 'variable'=>pointSize, 'value'=>24)
      add('radio', 'label'=>'32 point', 'variable'=>pointSize, 'value'=>32)
      add('separator')
      style = TkVariable.new
      add('radio', 'label'=>'Roman', 'variable'=>style, 'value'=>'roman')
      add('radio', 'label'=>'Bold', 'variable'=>style, 'value'=>'bold')
      add('radio', 'label'=>'Italic', 'variable'=>style, 'value'=>'italic')
      add('separator')
      add('command', 'label'=>'Show current values',
          'command'=>proc{showVars($menu_demo,
                                   ['pointSize', pointSize],
                                   ['style', style])} )
      invoke 1
      invoke 7
    }
  }
}

TkMenubutton.new($menu_frame, 'text'=>'Icons', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m, 'tearoff'=>false) {|icon_menu|
    m.configure('menu'=>icon_menu)
    add('command',
        'bitmap'=>'@'+[$demo_dir,'..',
                        'images','pattern.xbm'].join(File::Separator),
        'command'=>proc{TkDialog.new('title'=>'Bitmap Menu Entry',
                                     'text'=>'The menu entry you invoked displays a bitmap rather than a text string.  Other than this, it is just like any other menu entry.',
                                     'bitmap'=>'', 'default'=>0,
                                     'buttons'=>'Dismiss')} )
    ['info', 'questhead', 'error'].each{|icon|
      add('command', 'bitmap'=>icon,
          'command'=>proc{print "You invoked the #{icon} bitmap\n"})
    }
  }
}

TkMenubutton.new($menu_frame, 'text'=>'More', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m, 'tearoff'=>false) {|more_menu|
    m.configure('menu'=>more_menu)
    [ 'An entry','Another entry','Does nothing','Does almost nothing',
      'Make life meaningful' ].each{|i|
      add('command', 'label'=>i,
          'command'=>proc{print "You invoked \"#{i}\"\n"})
    }
  }
}

TkMenubutton.new($menu_frame, 'text'=>'Colors', 'underline'=>0) {|m|
  pack('side'=>'left')
  TkMenu.new(m) {|colors_menu|
    m.configure('menu'=>colors_menu)
    ['red', 'orange', 'yellow', 'green', 'blue'].each{|c|
      add('command', 'label'=>c, 'background'=>c,
          'command'=>proc{print "You invoked \"#{c}\"\n"})
    }
  }
}