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ruby--ruby/ext/tk/sample/demos-jp/items.rb
nagai e6697a6405 * ext/tk/tcltklib.c: SEGV when tcltk-stubs is enabled.
* ext/tk/tcltklib.c: avoid error on a shared object.

* ext/tk/extconf.rb: support --with-tcltkversion

* ext/tk/README.tcltklib: add document about --with-tcltkversion

* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb, ext/tk/lib/remote-tk.rb: 
  not work on $SAFE==4

* ext/tk/lib/multi-tk.rb: Object#methods returns Symbols on Ruby1.9.

* ext/tk/lib/tk/timer.rb: add TkTimer#at_end(proc) to register the 
  procedure which called at end of the timer.

* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemfont.rb, ext/tk/lib/font.rb: 
  support __IGNORE_UNKNOWN_CONFIGURE_OPTION__ about font options.

* ext/tk/lib/*: treat __IGNORE_UNKNOWN_CONFIGURE_OPTION__

* ext/tk/lib/tkextlib/iwidgets/scrolledcanvas.rb, 
  ext/tk/lib/tkextlib/iwidgets/scrolledlistbox.rb, 
  ext/tk/lib/tkextlib/iwidgets/scrolledtext.rb: bug fix. 

* ext/tk/lib/tk/text.rb: typo. call a wrong method.

* ext/tk/lib/tk/itemconfig.rb: ditto.

* ext/tk/lib/tk.rb, ext/tk/lib/tk/itemconfig.rb, 
  ext/tk/lib/tk/canvas.rb: support alias names of option keys.

* ext/tk/lib/tk/grid.rb: lack of module-method definitions.

* ext/tk/lib/tk/pack.rb, ext/tk/lib/tk/grid.rb: increase supported 
  parameter patterns of configure method.

* ext/tk/lib/tk.rb: add TkWindow#grid_anchor, grid_column, grid_row.

* ext/tk/lib/tk/wm.rb: methods of Tk::Wm_for_General module cannot
  pass the given block to methods of Tk::Wm module.

* ext/tk/lib/tk/wm.rb: Wm#overrideredirect overwrites arguemnt to 
  an invalid value.

* ext/tk/lib/tk.rb: fix memory (object) leak bug.

* ext/tk/tcltklib.c, ext/tk/tkutil/tkutil.c: fix memory leak.

* ext/tk/sample/demos-jp/aniwave.rb, ext/tk/sample/demos-en/aniwave.rb:
  bug fix.

* ext/tk/lib/tkextlib/blt/component.rb, 
  ext/tk/lib/tkextlib/tile/tentry.rb, 
  ext/tk/lib/tkextlib/tile/treeview.rb: ditto.

* ext/tk/lib/tkextlib/tile/tpaned.rb: improve TPaned#add.

* ext/tk/sample/demos-jp/widget, ext/tk/sample/demos-en/widget, 
  ext/tk/sample/demos-jp/style.rb, ext/tk/sample/demos-en/style.rb, 
  ext/tk/sample/demos-jp/bind.rb, ext/tk/sample/demos-en/bind.rb: 
  bug fix.

* ext/tk/sample/ttk_wrapper.rb: ditto.

* ext/tk/sample/ttk_wrapper.rb: support "if __FILE__ == $0" idiom.

* ext/tk/sample/tktextio.rb: add binding for 'Ctrl-u' at console mode.

* ext/tk/lib/tkextlib/tile.rb, ext/tk/lib/tkextlib/tile/style.rb, 
  ext/tk/sample/ttk_wrapper.rb: improve treating and control themes. 
  add Tk::Tile.themes and Tk::Tile.set_theme(theme).

* ext/tk/lib/tkextlib/tile.rb: lack of autoload definitions.

* ext/tk/lib/tkextlib/tile/tnotebook.rb: cannot use kanji (not UTF-8) 
  characters for headings.

* ext/tk/lib/tkextlib/tkDND/shape.rb: wrong package name.

* ext/tk/tkutil/tkutil.c: improve handling callback-subst-keys. 
  Now, support longnam-keys (e.g. '%CTT' on tkdnd-2.0; however, still
  not support tkdnd-2.0 on tkextlib), and symbols of parameters (e.g. 
  :widget=>'%W', :keycode=>'%k', '%x'=>:x, '%X'=>:root_x, and so on; 
  those are attributes of event object). It means that Ruby/Tk accepts
  not only "widget.bind(ev, '%W', '%k', ...){|w, k, ...| ... }", but 
  also "widget.bind(ev, :widget, :keycode, ...){|w, k, ...| ... }". 
  It is potentially incompatible, when user passes symbols to the
  arguments of the callback block (the block receives the symbols as
  strings). I think that is very rare case (probably, used by Ruby/Tk
  experts only). When causes such trouble, please give strings instead
  of such symbol parameters (e.g. call Symbol#to_s method).

* ext/tk/lib/tk/event.rb, ext/tk/lib/tk/validation.rb, 
  ext/tk/lib/tkextlib/blt/treeview.rb, 
  ext/tk/lib/tkextlib/winico/winico.rb: ditto.

* ext/tk/tkutil/tkutil.c: strings are available on subst_tables on 
  TkUtil::CallbackSubst class (it is useful on Ruby 1.9). 

* ext/tk/lib/tk/spinbox.rb, ext/tk/lib/tkextlib/iwidgets/hierarchy.rb, 
  ext/tk/lib/tkextlib/iwidgets/spinner.rb, 
  ext/tk/lib/tkextlib/iwidgets/entryfield.rb, 
  ext/tk/lib/tkextlib/iwidgets/calendar.rb, 
  ext/tk/lib/tkextlib/blt/dragdrop.rb, 
  ext/tk/lib/tkextlib/tkDND/tkdnd.rb, 
  ext/tk/lib/tkextlib/treectrl/tktreectrl.rb, 
  ext/tk/lib/tkextlib/tktable/tktable.rb: disable code piece became 
  unnecessary by reason of the changes of ext/tk/tkutil/tkutil.c.

* ext/tk/lib/tk.rb, ext/tk/lib/multi-tk.rb: change strategy to define
  the constant WITH_ENCODING.

* ext/tk/lib/tk.rb: fix bug on Tk::Encoding.tk_encoding_names.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2008-06-10 20:59:10 +00:00

379 lines
14 KiB
Ruby

# -*- coding: euc-jp -*-
#
# canvas item types widget demo (called by 'widget')
#
# toplevel widget が存在すれば削除する
if defined?($items_demo) && $items_demo
$items_demo.destroy
$items_demo = nil
end
# demo 用の toplevel widget を生成
$items_demo = TkToplevel.new {|w|
title("Canvas Item Demonstration")
iconname("Items")
positionWindow(w)
}
base_frame = TkFrame.new($items_demo).pack(:fill=>:both, :expand=>true)
# label 生成
TkLabel.new(base_frame) {
font $font
wraplength '5i'
justify 'left'
text "このウィンドウにはキャンバス widget が入っており、その中にはキャンバス widget がサポートする様々なタイプのアイテムの例が入っています。次のような操作ができます。\n ボタン-1 ドラッグ:\tアイテムを動かす。\n ボタン-2 ドラッグ:\t見えている部分をずらす。\n ボタン-3 ドラッグ:\t領域を囲う。\n コントロール-F:\t領域の下のアイテムを表示する。"
}.pack('side'=>'top')
# frame 生成
TkFrame.new(base_frame) {|frame|
TkButton.new(frame) {
#text '了解'
text '閉じる'
command proc{
tmppath = $items_demo
$items_demo = nil
tmppath.destroy
}
}.pack('side'=>'left', 'expand'=>'yes')
TkButton.new(frame) {
text 'コード参照'
command proc{showCode 'items'}
}.pack('side'=>'left', 'expand'=>'yes')
}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
# frame 生成
cvs = nil
TkFrame.new(base_frame) {|cf|
# canvas 生成
cvs = TkCanvas.new(cf) {|c|
focus
scrollregion '0c 0c 30c 24c'
width '15c'
height '10c'
relief 'sunken'
borderwidth 2
hs = TkScrollbar.new(cf) {|s|
orient 'horizontal'
command proc{|*args| c.xview(*args)}
c.xscrollcommand proc{|first,last| s.set first,last}
}
vs = TkScrollbar.new(cf) {|s|
command proc{|*args| c.yview(*args)}
c.yscrollcommand proc{|first,last| s.set first,last}
}
if $tk_version =~ /^4\.[01]/
hs.pack('side'=>'bottom', 'fill'=>'x')
vs.pack('side'=>'right', 'fill'=>'y')
c.pack('in'=>cf, 'expand'=>'yes', 'fill'=>'both')
else
c.grid('in'=>cf, 'row'=>0, 'column'=>0,
'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news')
vs.grid('row'=>0, 'column'=>1,
'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news')
hs.grid('row'=>1, 'column'=>0,
'rowspan'=>1, 'columnspan'=>1, 'sticky'=>'news')
TkGrid.rowconfigure(cf, 0, 'weight'=>1, 'minsize'=>0)
TkGrid.columnconfigure(cf, 0, 'weight'=>1, 'minsize'=>0)
end
}
}.pack('side'=>'top', 'fill'=>'both', 'expand'=>'yes')
# Display a 3x3 rectangular grid
TkcRectangle.new(cvs, '0c', '0c', '30c', '24c', 'width'=>2)
TkcLine.new(cvs, '0c', '8c', '30c', '8c', 'width'=>2)
TkcLine.new(cvs, '0c', '16c', '30c', '16c', 'width'=>2)
TkcLine.new(cvs, '10c', '0c', '10c', '24c', 'width'=>2)
TkcLine.new(cvs, '20c', '0c', '20c', '24c', 'width'=>2)
if $tk_version =~ /^4.*/
font1 = '-Adobe-Helvetica-Medium-R-Normal--*-120-*-*-*-*-*-*'
font2 = '-Adobe-Helvetica-Bold-R-Normal--*-240-*-*-*-*-*-*'
else
font1 = 'Helvetica 12'
font2 = 'Helvetica 24 bold'
end
if TkWinfo.depth($root).to_i > 1
blue = 'DeepSkyBlue3'
red = 'red'
bisque = 'bisque3'
green = 'SeaGreen3'
else
blue = 'black'
red = 'black'
bisque = 'black'
green = 'black'
end
# tag オブジェクトを生成
$tag_item = TkcGroup.new(cvs)
# Set up demos within each of the areas of the grid.
TkcText.new(cvs, '5c', '.2c', 'text'=>'ライン', 'anchor'=>'n')
TkcLine.new(cvs, '1c', '1c', '3c', '1c', '1c', '4c', '3c', '4c',
'width'=>2, 'fill'=>blue, 'capstyle'=>'butt',
'join'=>'miter', 'tags'=>$tag_item )
TkcLine.new(cvs, '4.67c','1c','4.67c','4c', 'arrow'=>'last', 'tags'=>$tag_item)
TkcLine.new(cvs, '6.33c','1c','6.33c','4c', 'arrow'=>'both', 'tags'=>$tag_item)
TkcLine.new(cvs, '5c','6c','9c','6c','9c','1c','8c','1c','8c','4.8c','8.8c',
'4.8c','8.8c','1.2c','8.2c','1.2c','8.2c','4.6c','8.6c','4.6c',
'8.6c','1.4c','8.4c','1.4c','8.4c','4.4c',
'width'=>3, 'fill'=>red, 'tags'=>$tag_item )
TkcLine.new(cvs, '1c','5c','7c','5c','7c','7c','9c','7c', 'width'=>'.5c',
'stipple'=>'@'+[$demo_dir,'..',
'images','gray25.xbm'].join(File::Separator),
'arrow'=>'both', 'arrowshape'=>'15 15 7', 'tags'=>$tag_item )
TkcLine.new(cvs, '1c','7c','1.75c','5.8c','2.5c','7c','3.25c','5.8c','4c','7c',
'width'=>'.5c', 'capstyle'=>'round', 'join'=>'round',
'tags'=>$tag_item )
TkcText.new(cvs, '15c', '.2c',
'text'=>'曲線 (滑らかにつないだ直線)', 'anchor'=>'n')
TkcLine.new(cvs, '11c','4c','11.5c','1c','13.5c','1c','14c','4c',
'smooth'=>'on', 'fill'=>blue, 'tags'=>$tag_item )
TkcLine.new(cvs, '15.5c','1c','19.5c','1.5c','15.5c','4.5c','19.5c','4c',
'smooth'=>'on', 'arrow'=>'both', 'width'=>3, 'tags'=>$tag_item )
TkcLine.new(cvs, '12c','6c','13.5c','4.5c','16.5c','7.5c','18c','6c',
'16.5c','4.5c','13.5c','7.5c','12c','6c',
'smooth'=>'on', 'width'=>'3m', 'capstyle'=>'round',
'stipple'=>'@'+[$demo_dir, '..',
'images', 'gray25.xbm'].join(File::Separator),
'fill'=>red, 'tags'=>$tag_item )
TkcText.new(cvs, '25c', '.2c', 'text'=>'多角形', 'anchor'=>'n')
TkcPolygon.new(cvs, '21c','1.0c','22.5c','1.75c','24c','1.0c','23.25c','2.5c',
'24c','4.0c','22.5c','3.25c','21c','4.0c','21.75c','2.5c',
'fill'=>'green', 'outline'=>'black', 'width'=>4,
'tags'=>$tag_item )
TkcPolygon.new(cvs, '25c','4c','25c','4c','25c','1c','26c','1c','27c','4c',
'28c','1c','29c','1c','29c','4c','29c','4c',
'fill'=>red, 'smooth'=>'on', 'tags'=> $tag_item)
TkcPolygon.new(cvs, '22c','4.5c','25c','4.5c','25c','6.75c','28c','6.75c',
'28c','5.25c','24c','5.25c','24c','6.0c','26c','6c','26c',
'7.5c','22c','7.5c',
'stipple'=>'@' + [$demo_dir, '..',
'images', 'gray25.xbm'].join(File::Separator),
'outline'=>'black', 'tags'=>$tag_item )
TkcText.new(cvs, '5c', '8.2c', 'text'=>'矩形', 'anchor'=>'n')
TkcRectangle.new(cvs, '1c','9.5c','4c','12.5c',
'outline'=>red, 'width'=>'3m', 'tags'=>$tag_item)
TkcRectangle.new(cvs, '0.5c','13.5c','4.5c','15.5c',
'fill'=>green, 'tags'=>$tag_item )
TkcRectangle.new(cvs, '6c','10c','9c','15c', 'outline'=>'',
'stipple'=>'@'+[$demo_dir,'..',
'images','gray25.xbm'].join(File::Separator),
'fill'=>blue, 'tags'=>$tag_item )
TkcText.new(cvs, '15c', '8.2c', 'text'=>'楕円', 'anchor'=>'n')
TkcOval.new(cvs, '11c','9.5c','14c','12.5c',
'outline'=>red, 'width'=>'3m', 'tags'=>$tag_item)
TkcOval.new(cvs, '10.5c','13.5c','14.5c','15.5c',
'fill'=>green, 'tags'=>$tag_item )
TkcOval.new(cvs, '16c','10c','19c','15c', 'outline'=>'',
'stipple'=>'@'+[$demo_dir,'..',
'images','gray25.xbm'].join(File::Separator),
'fill'=>blue, 'tags'=>$tag_item )
TkcText.new(cvs, '25c', '8.2c', 'text'=>'テキスト', 'anchor'=>'n')
TkcRectangle.new(cvs, '22.4c','8.9c','22.6c','9.1c')
TkcText.new(cvs, '22.5c', '9c', 'anchor'=>'n', 'font'=>font1, 'width'=>'4c',
'text'=>'短いテキスト。ワードラップ、左揃え、アンカーは北(上)。□は各テキストのアンカーポイントを示す。', 'tags'=>$tag_item )
TkcRectangle.new(cvs, '25.4c','10.9c','25.6c','11.1c')
TkcText.new(cvs, '25.5c', '11c', 'anchor'=>'w', 'font'=>font1, 'fill'=>blue,
'text'=>"いくつかの行。\nそれぞれ独立に\n行揃え。\n全て左端がアンカーされている。", 'justify'=>'center', 'tags'=>$tag_item )
TkcRectangle.new(cvs, '24.9c','13.9c','25.1c','14.1c')
if $tk_version =~ /^4\.[01]/
TkcText.new(cvs, '25c', '14c', 'anchor'=>'c', 'font'=>font2, 'fill'=>red,
'stipple'=>'@' + [$demo_dir, '..',
'images', 'grey.5'].join(File::Separator),
'text'=>'Stippled characters', 'tags'=>$tag_item )
else
TkcText.new(cvs, '25c', '14c', 'anchor'=>'c', 'font'=>font2, 'fill'=>red,
'stipple'=>'gray50', 'text'=>'Stippled characters',
'tags'=>$tag_item )
end
TkcText.new(cvs, '5c', '16.2c', 'text'=>'弧', 'anchor'=>'n')
TkcArc.new(cvs, '0.5c','17c','7c','20c', 'fill'=>green, 'outline'=>'black',
'start'=>45, 'extent'=>270, 'style'=>'pieslice', 'tags'=>$tag_item)
#TkcArc.new(cvs, '6.5c','17c','9.5c','20c', 'width'=>'4m', 'style'=>'arc',
# 'outline'=>blue, 'start'=>135, 'extent'=>270,
# 'outlinestipple'=>'@' + ['images', 'grey.25'].join(File::Separator),
# 'tags'=>$tag_item)
TkcArc.new(cvs, '6.5c','17c','9.5c','20c', 'width'=>'4m', 'style'=>'arc',
'outline'=>blue, 'start'=>135, 'extent'=>270,
'outlinestipple'=>'@'+[$demo_dir, '..',
'images','gray25.xbm'].join(File::Separator),
'tags'=>$tag_item)
TkcArc.new(cvs, '0.5c','20c','9.5c','24c', 'width'=>'4m', 'style'=>'pieslice',
'fill'=>'', 'outline'=>red, 'start'=>225, 'extent'=>90,
'tags'=>$tag_item)
TkcArc.new(cvs, '5.5c','20.5c','9.5c','23.5c', 'width'=>'4m', 'style'=>'chord',
'fill'=>blue, 'outline'=>'', 'start'=>45, 'extent'=>270,
'tags'=>$tag_item)
TkcText.new(cvs, '15c', '16.2c', 'text'=>'ビットマップ', 'anchor'=>'n')
#TkcBitmap.new(cvs, '13c','20c',
# 'bitmap'=>'@' + ['images', 'face'].join(File::Separator),
# 'tags'=>$tag_item)
TkcBitmap.new(cvs, '13c','20c',
'bitmap'=>'@' + [$demo_dir, '..',
'images', 'face.xbm'].join(File::Separator),
'tags'=>$tag_item)
#TkcBitmap.new(cvs, '17c','18.5c',
# 'bitmap'=>'@' + ['images', 'noletters'].join(File::Separator),
# 'tags'=>$tag_item)
TkcBitmap.new(cvs, '17c','18.5c',
'bitmap'=>'@' + [$demo_dir, '..',
'images', 'noletter.xbm'].join(File::Separator),
'tags'=>$tag_item)
#TkcBitmap.new(cvs, '17c','21.5c',
# 'bitmap'=>'@' + ['images', 'letters'].join(File::Separator),
# 'tags'=>$tag_item)
# ↓の形式でも可能
TkcBitmap.new(cvs, '17c','21.5c') {
bitmap '@' + [$demo_dir, '..', 'images', 'letters.xbm'].join(File::Separator)
tags $tag_item
}
#TkcBitmap.new(cvs, '17c','21.5c') {
# bitmap '@' + ['images', 'letters'].join(File::Separator)
# tags $tag_item
#}
TkcText.new(cvs, '25c', '16.2c', 'text'=>'ウィンドウ', 'anchor'=>'n')
TkButton.new(cvs) {|b|
text '押してね'
command proc{butPress cvs, red}
TkcWindow.new(cvs, '21c','18c',
'window'=>b, 'anchor'=>'nw', 'tags'=>$tag_item)
}
TkEntry.new(cvs, 'width'=>20, 'relief'=>'sunken') {|e|
insert 'end', '編集してね'
TkcWindow.new(cvs, '21c','21c',
'window'=>e, 'anchor'=>'nw', 'tags'=>$tag_item)
}
TkScale.new(cvs, 'from'=>0, 'to'=>100, 'length'=>'6c', 'sliderlength'=>'.4c',
'width'=>'.5c', 'tickinterval'=>0 ) {|scl|
TkcWindow.new(cvs, '28.5c','17.5c',
'window'=>scl, 'anchor'=>'n', 'tags'=>$tag_item)
}
TkcText.new(cvs, '21c', '17.9c', 'text'=>'ボタン:', 'anchor'=>'sw')
TkcText.new(cvs, '21c', '20.9c', 'text'=>'エントリ:', 'anchor'=>'sw')
TkcText.new(cvs, '28.5c', '17.4c', 'text'=>'スケール:', 'anchor'=>'s')
# Set up event bindings for canvas:
cvs.itembind($tag_item, 'Any-Enter', proc{itemEnter cvs})
cvs.itembind($tag_item, 'Any-Leave', proc{itemLeave cvs})
cvs.bind('2', proc{|x,y| cvs.scan_mark x,y}, '%x %y')
cvs.bind('B2-Motion', proc{|x,y| cvs.scan_dragto x,y}, '%x %y')
cvs.bind('3', proc{|x,y| itemMark cvs,x,y}, '%x %y')
cvs.bind('B3-Motion', proc{|x,y| itemStroke cvs,x,y}, '%x %y')
cvs.bind('Control-f', proc{itemsUnderArea cvs})
cvs.bind('1', proc{|x,y| itemStartDrag cvs,x,y}, '%x %y')
cvs.bind('B1-Motion', proc{|x,y| itemDrag cvs,x,y}, '%x %y')
# Utility methods for highlighting the item under the pointer
$restoreCmd = nil
def itemEnter (c)
if TkWinfo.depth(c).to_i == 1
$restoreCmd = nil
return
end
type = c.itemtype('current')
if type == TkcWindow
$restoreCmd = nil
return
end
if type == TkcBitmap
bg = (c.itemconfiginfo('current', 'background'))[4]
$restoreCmd = proc{c.itemconfigure 'current', 'background', bg}
c.itemconfigure 'current', 'background', 'SteelBlue2'
return
end
fill = (c.itemconfiginfo('current', 'fill'))[4]
if (type == TkcRectangle || type == TkcOval || type == TkcArc) && fill == []
outline = (c.itemconfiginfo('current', 'outline'))[4]
$restoreCmd = proc{c.itemconfigure 'current', 'outline', outline}
c.itemconfigure 'current', 'outline', 'SteelBlue2'
else
$restoreCmd = proc{c.itemconfigure 'current', 'fill', fill}
c.itemconfigure 'current', 'fill', 'SteelBlue2'
end
end
def itemLeave(c)
$restoreCmd.call if $restoreCmd
end
# Utility methods for stroking out a rectangle and printing what's
# underneath the rectangle's area.
def itemMark(c,x,y)
$areaX1 = c.canvasx(x)
$areaY1 = c.canvasy(y)
c.delete 'area'
end
def itemStroke(c,x,y)
x = c.canvasx(x)
y = c.canvasy(y)
if $areaX1 != x && $areaY1 != y
c.delete 'area'
c.addtag_withtag 'area', TkcRectangle.new(c, $areaX1, $areaY1, x, y,
'-outline', 'black')
$areaX2 = x
$areaY2 = y
end
end
def itemsUnderArea(c)
area = c.find_withtag('area')
items = []
c.find_enclosed($areaX1,$areaY1,$areaX2,$areaY2).each{|i|
items.push(i) if i.gettags.include?($tag_item)
}
print "Items enclosed by area: #{items.inspect}\n"; STDOUT.flush
items.clear
c.find_overlapping($areaX1,$areaY1,$areaX2,$areaY2).each{|i|
items.push(i) if i.gettags.include?($tag_item)
}
print "Items overlapping area: #{items.inspect}\n"; STDOUT.flush
end
$areaX1 = 0
$areaY1 = 0
$areaX2 = 0
$areaY2 = 0
# Utility methods to support dragging of items.
def itemStartDrag(c,x,y)
$lastX = c.canvasx(x)
$lastY = c.canvasy(y)
end
def itemDrag(c,x,y)
x = c.canvasx(x)
y = c.canvasy(y)
c.move('current', x - $lastX, y - $lastY)
$lastX = x
$lastY = y
end
# Method that's invoked when the button embedded in the canvas
# is invoked.
def butPress(w,color)
i = TkcText.new(w, '25c', '18.1c',
'text'=>'いてて!!', 'fill'=>color, 'anchor'=>'n')
Tk.after(500, proc{w.delete i})
end