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ruby--ruby/ext/tk/sample/demos-jp/hscale.rb
nagai 75362fbd47 * (IMPORTANT BUG FIX) scan of event keywords doesn't work on recent
versions of Tck/Tk
* (bug fix) initialize error of instance variable on TkComposite
* (bug fix) initialize error on encoding-system on MultiTkIp
* (bug fix) trouble on destroying widgets
* (new) add JP and EN version of Ruby/Tk widget demos


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4249 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2003-07-31 20:52:40 +00:00

76 lines
1.8 KiB
Ruby

require "tkcanvas"
if defined?($hscale_demo) && $hscale_deom
$hscale_demo.destroy
$hscale_demo = nil
end
$hscale_demo = TkToplevel.new {|w|
title("Horizontal Scale Demonstration")
iconname("hscale")
}
positionWindow($hscale_demo)
msg = TkLabel.new($hscale_demo) {
font $font
wraplength '3.5i'
justify 'left'
text "下には矢印が1つと水平なスケールが表示されています。\
スケール上でマウスボタン1をクリック、またはドラッグすると\
矢印の長さを変えることができます。"
}
msg.pack('side'=>'top')
TkFrame.new($hscale_demo) {|frame|
TkButton.new(frame) {
text '了解'
command proc {
tmppath = $hscale_demo
$hscale_demo = nil
tmppath.destroy
}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'コード参照'
command proc { showCode 'hscale' }
}.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
TkFrame.new($hscale_demo) {|frame|
canvas = TkCanvas.new(frame) {|c|
width 50
height 50
bd 0
highlightthickness 0
TkcPolygon.new(c, '0', '0', '1', '1', '2', '2') {
fill 'DeepSkyBlue'
tags 'poly'
}
TkcLine.new(c, '0', '0', '1', '1', '2', '2', '0', '0') {
fill 'black'
tags 'line'
}
}.pack('side'=>'top', 'expand'=>'yes', 'anchor'=>'s', 'fill'=>'x', 'padx'=>'15')
scale = TkScale.new(frame) {
orient 'horizontal'
length 284
from 0
to 250
command proc{|value| setWidth(canvas, value)}
tickinterval 50
}.pack('side'=>'bottom', 'expand'=>'yes', 'anchor'=>'n')
scale.set 75
}.pack('side'=>'top', 'fill'=>'x')
def setWidth(w, width)
width = width + 21
x2 = width - 30
if x2 < 21
x2 = 21
end
w.coords 'poly',20,15,20,35,x2,35,x2,45,width,25,x2,5,x2,15,20,15
w.coords 'line',20,15,20,35,x2,35,x2,45,width,25,x2,5,x2,15,20,15
end