* (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

1 files changed, 78 insertions, 0 deletions

diff --git a/ext/tk/sample/demos-en/vscale.rb b/ext/tk/sample/demos-en/vscale.rb
new file mode 100644
index 0000000000..636b85813b
--- /dev/null
+++ b/ext/tk/sample/demos-en/vscale.rb
@@ -0,0 +1,78 @@
+# vscale.rb
+#
+# This demonstration script shows an example with a vertical scale.
+
+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 $font
+  wraplength '3.5i'
+  justify 'left'
+  text "An arrow and a vertical scale are displayed below.  If you click or drag mouse button 1 in the scale, you can change the size of the arrow."
+}
+msg.pack('side'=>'top', 'padx'=>'.5c')
+
+TkFrame.new($vscale_demo) {|frame|
+  TkButton.new(frame) {
+    text 'Dismiss'
+    command proc {
+      tmppath = $vscale_demo
+      $vscale_demo = nil
+      tmppath.destroy
+    }
+  }.pack('side'=>'left', 'expand'=>'yes')
+
+  TkButton.new(frame) {
+    text 'Show Code'
+    command proc { showCode 'vscale' }
+  }.pack('side'=>'left', 'expand'=>'yes')
+}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
+
+TkFrame.new($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