ruby--ruby/ext/tk/sample/demos-jp/vscale.rb

require "tkcanvas"

if defined?($vscale_demo) && $vscale_demo
  $vscale_demo.destroy
  $vscale_demo = nil
end

$vscale_demo = TkToplevel.new {|w|
  title("Vertical Scale Demonstration")
  iconname("vscale")
}
positionWindow($vscale_demo)

msg = TkLabel.new($vscale_demo) {
  font $font
  wraplength '3.5i'
  justify 'left'
#  text "<22><><EFBFBD>ˤ<EFBFBD><CBA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD>ĤȾ<C4A4>ľ<EFBFBD>ʥ<EFBFBD><CAA5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뤬ɽ<EBA4AC><C9BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƥ<EFBFBD><C6A4>ޤ<EFBFBD><DEA4><EFBFBD>\
#<23><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǥޥ<C7A5><DEA5><EFBFBD><EFBFBD>ܥ<EFBFBD><DCA5><EFBFBD>1<EFBFBD>򥯥<EFBFBD><F2A5AFA5>å<EFBFBD><C3A5><EFBFBD><EFBFBD>ޤ<EFBFBD><DEA4>ϥɥ<CFA5><C9A5>å<EFBFBD><C3A5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\
#<23><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĺ<EFBFBD><C4B9><EFBFBD><EFBFBD><EFBFBD>Ѥ<EFBFBD><D1A4>뤳<EFBFBD>Ȥ<EFBFBD><C8A4>Ǥ<EFBFBD><C7A4>ޤ<EFBFBD><DEA4><EFBFBD>"
  text "<EFBFBD>ˤϥС<EFBFBD><EFBFBD>Ƚķ<EFBFBD><EFBFBD>Υ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뤬ɽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƥ<EFBFBD><EFBFBD>ޤ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǥޥ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Υܥ<EFBFBD><EFBFBD><EFBFBD>1 <20>򥯥<EFBFBD><F2A5AFA5>å<EFBFBD><C3A5><EFBFBD><EFBFBD>뤫<EFBFBD>ɥ<EFBFBD><C9A5>å<EFBFBD><C3A5><EFBFBD><EFBFBD>ƥС<C6A5><D0A1>ι⤵<CEB9><E2A4B5><EFBFBD>Ѥ<EFBFBD><D1A4>뤳<EFBFBD>Ȥ<EFBFBD><C8A4>Ǥ<EFBFBD><C7A4>ޤ<EFBFBD><DEA4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ä<EFBFBD><C3A4><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB><EFBFBD>ץܥ<D7A5><DCA5><EFBFBD><EFBFBD>򲡤<EFBFBD><F2B2A1A4>Ƥ<EFBFBD><C6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>"
}
msg.pack('side'=>'top', 'padx'=>'.5c')

TkFrame.new($vscale_demo) {|frame|
  TkButton.new(frame) {
    #text 'λ<><CEBB>'
    text '<27>Ĥ<EFBFBD><C4A4><EFBFBD>'
    command proc {
      tmppath = $vscale_demo
      $vscale_demo = nil
      tmppath.destroy
    }
  }.pack('side'=>'left', 'expand'=>'yes')

  TkButton.new(frame) {
    text '<27><><EFBFBD><EFBFBD><EFBFBD>ɻ<EFBFBD><C9BB><EFBFBD>'
    command proc { showCode 'vscale' }
  }.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')

TkFrame.new($vscale_demo) {|frame|
  borderwidth 10
  canvas = TkCanvas.new(frame) {|c|
    width 50
    height 50
    bd 0
    highlightthickness 0
    TkcPolygon.new(c, 0, 0, 1, 1, 2, 2) {
      fill 'SeaGreen3'
      tags 'poly'
    }
    TkcLine.new(c, 0, 0, 1, 1, 2, 2, 0, 0) {
      fill 'black'
      tags 'line'
    }
  }.pack('side'=>'left',  'anchor'=>'nw', 'fill'=>'y')
  scale = TkScale.new(frame) {
    orient 'vertical'
    length 284
    from 0
    to 250
    command proc{|value| setHeight(canvas, value)}
    tickinterval 50
  }.pack('side'=>'left', 'anchor'=>'ne')
  scale.set 75
}.pack


def setHeight(w, height)
  height = height + 21
  y2 = height - 30
  if y2 < 21
    y2 = 21
  end
  w.coords 'poly',15,20,35,20,35,y2,45,y2,25,height,5,y2,15,y2,15,20
  w.coords 'line',15,20,35,20,35,y2,45,y2,25,height,5,y2,15,y2,15,20
end