Fresh start

10 files changed, 852 insertions, 0 deletions

diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt b/jni/ruby/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt
new file mode 100644
index 0000000..f2e0edc
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/Orig_LICENSE.txt
@@ -0,0 +1,51 @@
+
+  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+  >>>  The following text is the original 'license.txt' of vu extension.  <<<
+  >>>  Original Tcl source files are not include in this directory,       <<<
+  >>>  because of all of them are rewritten to Ruby files.                <<<
+  >>>  However, the bitmap data file included in this directory is the    <<<
+  >>>  same file of vu extension. So, the bitmap data file is under the   <<<
+  >>>  following license.                                                 <<<
+  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+		   * COPYRIGHT AND LICENSE TERMS *
+
+(This file blatantly stolen from Tcl/Tk license and adapted - thus assume
+it falls under similar license terms).
+
+This software is copyrighted by Jeffrey Hobbs <jeff.hobbs@acm.org> and
+others.  The following terms apply to all files associated with the
+software unless explicitly disclaimed in individual files.
+
+The authors hereby grant permission to use, copy, modify, distribute, and
+license this software and its documentation for any purpose, provided that
+existing copyright notices are retained in all copies and that this notice
+is included verbatim in any distributions.  No written agreement, license,
+or royalty fee is required for any of the authorized uses.
+
+IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR
+DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF,
+EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE IS
+PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO
+OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
+MODIFICATIONS.
+
+RESTRICTED RIGHTS: Use, duplication or disclosure by the U.S. government
+is subject to the restrictions as set forth in subparagraph (c) (1) (ii)
+of the Rights in Technical Data and Computer Software Clause as DFARS
+252.227-7013 and FAR 52.227-19.
+
+SPECIAL NOTES:
+
+This software also falls under the bourbon_ware clause:
+
+    Should you find this software useful in your daily work, you should
+    feel obliged to take the author out for a drink if the opportunity
+    presents itself.  The user may feel exempt from this clause if they
+    are under 21 or think the author has already partaken of too many
+    drinks.
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/README.txt b/jni/ruby/ext/tk/sample/tkextlib/vu/README.txt
new file mode 100644
index 0000000..ce5f371
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/README.txt
@@ -0,0 +1,50 @@
+
+  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+  >>>  The following text is the original 'README.txt' of  <<<
+  >>>  vu extension demos.                                 <<<
+  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+##
+## DESCRIPTION OF DEMOS
+##
+
+canvItems.tcl
+	old demo of all canvas chart items, useful to find memory leaks.
+	<1> prints out the additional memory usage (charts.so + script)
+
+canvSticker.tcl
+	Heribert Dahms original "demo.tcl"
+	<p> creates DEMO.ps
+
+canvSticker2.tcl
+	compares "sticker" and "text"; press <1>, <2> or <1> ...
+	<p> creates DEMO.ps
+
+dial.tcl
+	demo of variations of the dial widget.
+
+load.tcl
+	Just a utility file, not a real demo.
+
+m128_000.xbm
+	XBM pic used by sticker and canvItems demos
+
+oscilloscope.tcl
+	the heart of a Realtime Oscilloscope,where the PC´s joystick
+	port gives 4 digtal inputs and 4 analog 8 bit values with an
+	resolution of ~1 millisecond (!!!)  running Realtime Linux.
+	<p> creates DEMO.ps
+
+pie.tcl
+	The magic 3D spinning pie chart!
+
+vu.tcl
+	demo fo Vu widgets
+
+canvLabel.tcl
+	'label' is a canvas item just like 'text', but with -angle
+	rotation of the string.  This is not built in by default, as
+	it requires the internal Tk headers.
+	press <1>, <2> or <1> ...
+	<p> creates DEMO.ps
+
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/canvItems.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/canvItems.rb
new file mode 100644
index 0000000..364f876
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/canvItems.rb
@@ -0,0 +1,90 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/charts'
+
+#######################################
+
+xbm = File.join(File.dirname(File.expand_path(__FILE__)), 'm128_000.xbm')
+
+sval = [ 11, 22, 33, 44, 55, 66, 77, 88, 99 ]
+
+l0 = TkLabel.new(:width=>128, :height=>128,
+                 :bitmap=>"@#{xbm}", :relief=>:groove).pack(:side=>:left)
+
+c0 = TkCanvas.new(:width=>80, :height=>80,
+                  :insertwidth=>0, :highlightthickness=>0,
+                  :selectborderwidth=>0, :borderwidth=>2,
+                  :relief=>:ridge).place(:in=>l0, :relx=>0.5, :rely=>0.5,
+                                         :anchor=>:c)
+
+st = Tk::Vu::TkcStripchart.new(c0, 3, 3, 80, 80,
+                               :background=>"#b7c0d7", :fill=>'slategray3',
+                               :jumpscroll=>1, :outline=>'black',
+                               :scaleline=>'blue', :stripline=>'red',
+                               :selected=>1, :values=>sval)
+
+TkcText.create(c0, 40, 40,
+               :text=>Tk::TCL_PATCHLEVEL, :fill=>'cyan', :tags=>'text')
+
+
+l1 = TkLabel.new(:width=>128, :height=>128,
+                 :bitmap=>"@#{xbm}", :relief=>:groove).pack(:side=>:left)
+
+c1 = TkCanvas.new(:width=>80, :height=>80,
+                  :insertwidth=>0, :highlightthickness=>0,
+                  :selectborderwidth=>0, :borderwidth=>2,
+                  :relief=>:ridge).place(:in=>l1, :relx=>0.5, :rely=>0.5,
+                                         :anchor=>:c)
+
+bar1 = Tk::Vu::TkcBarchart.new(c1, 3, 3, 80, 80,
+                               :background=>"#b7c0d7", :scalevalue=>10.0,
+                               :autocolor=>true, :selected=>1,
+                               :outline=>'black', :barline=>'yellow',
+                               :scalelinestyle=>0)
+
+bar2 = Tk::Vu::TkcBarchart.new(c1, 53, 3, 80, 80,
+                               :background=>"#b7c0d7", :scalevalue=>10.0,
+                               :autocolor=>true, :selected=>1,
+                               :outline=>'black', :fill=>"#b7c0d7",
+                               :barline=>'red', :scalelinestyle=>22)
+
+
+l2 = TkLabel.new(:width=>128, :height=>128,
+                 :bitmap=>"@#{xbm}", :relief=>:groove).pack(:side=>:left)
+
+c2 = TkCanvas.new(:width=>80, :height=>80,
+                  :insertwidth=>0, :highlightthickness=>0,
+                  :selectborderwidth=>0, :borderwidth=>2,
+                  :relief=>:ridge).place(:in=>l2, :relx=>0.5, :rely=>0.5,
+                                         :anchor=>:c)
+
+begin
+  stick = Tk::Vu::TkcSticker.new(c2, 3, 3, 80, 80,
+                                 :text=>"Tcl/Tk", :space=>0, :color=>'red',
+                                 :outline=>'red', :font=>'Helvetica 14 bold',
+                                 :fill=>'', :stipple=>'', :bar=>'blue',
+                                 :orient=>:vertical, :anchor=>:s,
+                                 :relheight=>1.0, :relwidth=>0.15,
+                                 :relx=>0.1, :rely=>0.0)
+rescue
+  stick = nil
+  TkcText.new(c2, 40, 10, :text=>"No Sticker Item")
+end
+
+c_do = proc{
+  st[:values]   = rand() * 100
+
+  bar1[:values] = rand() * 10
+  bar2[:values] = rand() * 10
+
+  stick[:rely]  = rand() * 100 * 0.01 if stick
+}
+
+c0.bind('1', c_do)
+
+TkTimer.new(100, -1, c_do).start
+
+Tk.root.bind('q', proc{exit})
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker.rb
new file mode 100644
index 0000000..85713eb
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker.rb
@@ -0,0 +1,82 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/charts'
+
+#######################################
+
+Tk.root.geometry('+30+30')
+
+delay = 2000
+
+c = TkCanvas.new.pack
+
+begin
+  st = Tk::Vu::TkcSticker.new(c, 0, 0, 10, 10)
+rescue
+  Tk.messageBox(:type=>'ok', :title=>"No sticker Item",
+                :message=>"This build of vu does not include the sticker item")
+  exit
+end
+#st.delete
+
+steps = []
+
+steps << proc{
+  # I used a 75dpi screen for testing, but others should make no difference!
+  puts 'You\'ll see a small upright rectangle with "He" inside.'
+  st = Tk::Vu::TkcSticker.new(c, '6m', '10m', '13m', '27m', :text=>'Hello')
+}
+
+steps << proc{
+  puts 'You\'ll see the whole "Hello" drawn rotated 90 degrees.'
+  st[:orient] = :vertical
+}
+
+steps << proc{
+  puts 'The rectangle shrinks and the text is clipped to "Hell"'
+  #st.coords('6m', '10m', '13m', '20m')
+  st.coords('6m', '10m', '13m', '17m')
+}
+
+steps << proc{
+  puts 'Now you\'ll read "ello"'
+  st[:lefttrunc] = true
+}
+
+steps << proc{
+  puts 'Enlarging the rectangle shows the complete "Hello" again'
+  st.scale(0, 0, 3, 3)
+}
+
+steps << proc{
+  puts 'This time the text is repeated: "Hello", approx. 5mm space, "Hello"'
+  st[:space] = '5m'
+}
+
+steps << proc{
+  puts 'A vertical bar appears in the lower right region and text jumps to the left.'
+  st.configure(:anchor=>:n, :relw=>0.3, :relh=>0.7,
+               :relx=>0.6, :rely=>0.3, :bar=>'red')
+}
+
+steps << proc{
+  puts 'Paint the backgound.'
+  st[:fill] = 'yellow'
+}
+
+steps << proc{
+  puts "Let's test stippling."
+  st[:stipple] = 'gray25'
+}
+
+steps << proc{
+  puts 'Finally a large outline forces a single "Hello" and shrinks the bar.'
+  st[:width] = '6m'
+}
+
+Tk.root.bind('q', proc{exit})
+
+TkTimer.new(delay, 1, *steps).start
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker2.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker2.rb
new file mode 100644
index 0000000..3d9495f
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/canvSticker2.rb
@@ -0,0 +1,101 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/charts'
+
+#######################################
+
+c = TkCanvas.new.pack
+
+begin
+  st = Tk::Vu::TkcSticker.new(c, 0, 0, 10, 10)
+rescue
+  Tk.messageBox(:type=>'ok', :title=>"No sticker Item",
+                :message=>"This build of vu does not include the sticker item")
+  exit
+end
+
+c.destroy
+
+#---
+#--- set STRING {{x0 y0 x1 y1} {...text...} {resize point: center}
+
+#sti_conf = [ [10, 10, 180, 180], "Sticker äöüß@²³¼½¾",  :center ]
+#txt_conf = [ [210, 210],        "Text    äöüß@²³¼½¾",  :center ]
+sti_conf = [ [10, 10, 350, 350],
+             Tk::UTF8_String('Sticker \u00E4\u00F6\u00FC\u00DF\u0040\u00B2\u00B3\u00BC\u00BD\u00BE'),
+             :center ]
+txt_conf = [ [250, 250],
+             Tk::UTF8_String('Text    \u00E4\u00F6\u00FC\u00DF\u0040\u00B2\u00B3\u00BC\u00BD\u00BE'),
+             :center ]
+
+#p sti_conf
+
+fnt = TkFont.new('Helvetica 24 bold')
+
+#---GUI
+c = TkCanvas.new(:width=>500, :height=>500, :bg=>'aquamarine3').pack
+
+#---CRRW Use the technique of eval the coord ...
+sti = Tk::Vu::TkcSticker.new(c, sti_conf[0]){
+  anchor    sti_conf[2]
+  bar       'black'
+  color     'red'
+  fill      ''
+  font      fnt
+  lefttrunc 0
+  outline   ''
+  relheight 0.0
+  relwidth  0.0
+  relx      0.0
+  rely      0.0
+  space     0
+  stipple   ''
+  tags      'sti'
+  text      sti_conf[1]
+  width     0
+  orient    :vertical
+  minwidth  0
+  minheight 0
+  maxwidth  32767
+  maxheight 32767
+}
+
+txt = TkcText.new(c, txt_conf[0]){
+  activefill      ''
+  activestipple   ''
+  anchor          txt_conf[2]
+  disabledfill    ''
+  disabledstipple ''
+  fill            'blue'
+  font            fnt
+  justify         :left
+  offset          '0,0'
+  state           ''
+  stipple         ''
+  tags            ['tex']
+  text            txt_conf[1]
+  width           0
+}
+
+#---BINDINGS
+c.bind('2', proc{
+         sti[:orient] = :horizontal
+         txt[:width] = 0  # horizontal
+       })
+
+c.bind('3', proc{
+         sti[:orient] = :vertical
+         txt[:width] = 1  # top down
+       })
+
+Tk.root.bind('p', proc{
+               c.postscript(:file=>'DEMO.ps')
+               puts "DEMO.ps printed"
+             })
+
+Tk.root.bind('q', proc{exit})
+
+#####################
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/dial_demo.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/dial_demo.rb
new file mode 100644
index 0000000..f1f2f11
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/dial_demo.rb
@@ -0,0 +1,113 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/dial'
+
+#######################################
+
+v_volume = TkVariable.new
+v_speed  = TkVariable.new
+v_dir    = TkVariable.new
+v_rot    = TkVariable.new
+v_linked = TkVariable.new
+v_needle = TkVariable.new
+
+volume = Tk::Vu::Dial.new(:label=>"Volume", :from=>-0.1, :to=>0.1,
+                          :resolution=>0.001, :minortickinterval=>0.01,
+                          :tickinterval=>0.1, :beginangle=>-20,
+                          :endangle=>260, :variable=>v_volume)
+
+speed = Tk::Vu::Dial.new(:label=>"Speed", :from=>2000, :to=>100,
+                         :resolution=>10, :tickinterval=>100,
+                         :minortickinterval=>0, :variable=>v_speed,
+                         :showtags=>:label, :showvalue=>false)
+
+speed.set_tag_constrain(100, 'Fast', 2000, 'Slow')
+
+fwd  = Tk::Vu::Dial.new(:from=>-10.0, :to=>-20.0, :resolution=>0.1,
+                        :tickinterval=>5.0, :minortickinterval=>1.0,
+                        :variable=>v_dir)
+
+rev  = Tk::Vu::Dial.new(:from=>-20.0, :to=>-10.0, :resolution=>0.1,
+                        :tickinterval=>5.0, :minortickinterval=>1.0,
+                        :variable=>v_dir)
+
+small = Tk::Vu::Dial.new(:font=>"Helvetica -10", :from=>0, :to=>10,
+                         :resolution=>0.05, :tickinterval=>2,
+                         :minortickinterval=>0.5, :radius=>20,
+                         :dialcolor=>'red2', :activebackground=>'red',
+                         :variable=>v_rot)
+
+large = Tk::Vu::Dial.new(:font=>"Helvetica -8", :from=>0, :to=>10,
+                         :resolution=>0.05, :tickinterval=>1,
+                         :minortickinterval=>0.25, :radius=>40,
+                         :dialcolor=>'red2', :activebackground=>'red',
+                         :variable=>v_rot)
+
+turn = Tk::Vu::Dial.new(:needlecolor=>'red', :label=>"Linked",
+                        :variable=>v_linked)
+
+scale = TkScale.new(:label=>"Linked", :variable=>v_linked)
+
+d1 = Tk::Vu::Dial.new(:resolution=>0.0001, :from=>-0.1, :to=>0.1,
+                      :showvalue=>true, :minortickinterval=>0.01,
+                      :tickinterval=>0.1, :radius=>30, :label=>"Dial",
+                      :beginangle=>-20, :endangle=>260, :variable=>v_needle,
+                      :relief=>:raised)
+
+d2 = Tk::Vu::Dial.new(:resolution=>0.01, :from=>-0.1, :to=>0.1,
+                      :showvalue=>true, :minortickinterval=>0.01,
+                      :tickinterval=>0.1, :radius=>30, :label=>"Dial 2",
+                      :beginangle=>-20, :endangle=>260, :variable=>v_needle,
+                      :dialrelief=>:flat, :needlecolor=>'red',
+                      :needletype=>:triangle, :relief=>:sunken)
+
+d3 = Tk::Vu::Dial.new(:resolution=>0.001, :from=>-0.1, :to=>0.1,
+                      :showvalue=>true, :minortickinterval=>0.01,
+                      :tickinterval=>0.1, :radius=>30, :label=>"Dial 3",
+                      :beginangle=>-20, :endangle=>260, :variable=>v_needle,
+                      :dialrelief=>:flat, :needlecolor=>'blue',
+                      :needletype=>:arc, :relief=>:ridge)
+
+f_btns = TkFrame.new
+f_sep  = TkFrame.new(:height=>2, :relief=>:sunken, :bd=>1)
+
+
+v_volume.value = -0.1
+v_speed.value = 500
+
+update = TkTimer.new(proc{v_speed.numeric}, -1, proc{
+                       if v_volume == volume[:to]
+                         v_volume.numeric = volume[:from]
+                       else
+                         v_volume.numeric += volume[:resolution]
+                       end
+                     })
+
+b_start = TkButton.new(:text=>"Start", :command=>proc{update.start})
+b_stop  = TkButton.new(:text=>"Stop",  :command=>proc{update.stop})
+b_exit  = TkButton.new(:text=>"Exit",  :command=>proc{exit})
+
+Tk.grid(b_start, :in=>f_btns, :sticky=>:ew, :padx=>4, :pady=>4)
+Tk.grid(b_stop,  :in=>f_btns, :sticky=>:ew, :padx=>4, :pady=>4)
+f_btns.grid_columnconfigure(0, :weight=>1)
+
+Tk.grid(f_btns, speed, volume, :sticky=>:news)
+Tk.grid(f_sep,  '-',   '-',    :sticky=>:news)
+Tk.grid(fwd,    rev,   d1,     :sticky=>:news)
+Tk.grid(small,  large, d2,     :sticky=>:news)
+Tk.grid(turn,   scale, d3,     :sticky=>:news)
+
+Tk.grid(b_exit, '-',   '-',    :sticky=>:ew, :padx=>4, :pady=>4)
+
+Tk.root.grid_columnconfigure(0, :weight=>1)
+Tk.root.grid_columnconfigure(1, :weight=>1)
+Tk.root.grid_columnconfigure(2, :weight=>1)
+
+Tk.root.grid_rowconfigure(0, :weight=>1)
+Tk.root.grid_rowconfigure(2, :weight=>1)
+Tk.root.grid_rowconfigure(3, :weight=>1)
+Tk.root.grid_rowconfigure(4, :weight=>1)
+
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/m128_000.xbm b/jni/ruby/ext/tk/sample/tkextlib/vu/m128_000.xbm
new file mode 100644
index 0000000..455e3c5
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/m128_000.xbm
@@ -0,0 +1,174 @@
+#define m128_000_width 128
+#define m128_000_height 128
+static unsigned char m128_000_bits[] = {
+  0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0x00, 0xc0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xf0, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03,
+  0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+  0xff, 0xff, 0xff, 0x03, 0xfc, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xea, 0x0f, 0xfc, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xd5, 0x0f,
+  0xbf, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+  0xaa, 0xaa, 0xaa, 0x3f, 0x7f, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x3f, 0xaf, 0xfa, 0xab, 0xaa,
+  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xfa, 0xab, 0x3e,
+  0x5f, 0xf5, 0x57, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+  0x55, 0xf5, 0x57, 0x3d, 0xaf, 0x0e, 0xac, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
+  0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0x0e, 0xac, 0x3e, 0x5f, 0x0d, 0x5c, 0x55,
+  0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x0d, 0x5c, 0x3d,
+  0xaf, 0x03, 0xb0, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa,
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+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, };
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/oscilloscope.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/oscilloscope.rb
new file mode 100644
index 0000000..1efe13c
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/oscilloscope.rb
@@ -0,0 +1,68 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/charts'
+
+#---USAGE
+info = "...the heart of a Realtime Oscilloscope, where the PCIs
+joystick port gives 4 digtal inputs and 4 analog 8 bit
+values with an resolution of ~1 millisecond (!!!)
+running Realtime Linux.
+<p> creates DEMO.ps
+<B1-Motion> see what happens"
+puts info
+
+#---GEOMETRY
+geo_fr  = [10, 10, 210, 180]
+geo_ch0 = [10, 10, 210,  90]
+geo_ch1 = [10, 90, 210, 180]
+geo_t1  = [15, 88]
+
+#---GUI
+c = TkCanvas.new(:width=>220, :height=>190).pack(:fill=>:both, :expand=>true)
+
+#---background
+TkcRectangle.new(c, geo_fr, :width=>4, :fill=>'aquamarine3',
+                 :tags=>['osc', 'frbg'])
+
+#---channel 0
+ch0 = Tk::Vu::TkcStripchart.new(c, geo_ch0,
+                                :fill=>'', :jumpscroll=>false,
+                                :outline=>'', :scaleline=>'',
+                                :stripline=>'cyan', :tags=>['osc', 'ch0'])
+
+#---channel 1
+ch1 = Tk::Vu::TkcStripchart.new(c, geo_ch1,
+                                :fill=>'', :jumpscroll=>0,
+                                :outline=>'', :scaleline=>'',
+                                :stripline=>'red', :tags=>['osc', 'ch1'])
+
+#---frame
+TkcRectangle.new(c, geo_fr, :width=>4, :tags=>['osc', 'frfg'])
+
+#---position
+txt1 = TkcText.new(c, geo_t1, :text=>"B1-Motion: X:%X\tY:%Y",
+                   :anchor=>:nw, :tags=>['osc', 'txt1'])
+
+#---BINDINGS
+c.bind('B1-Motion', proc{|x, y, xx, yy|
+         ch0[:values] = x
+         ch1[:values] = y
+         txt1[:text] = "B1-Motion: X:#{xx}\tY:#{yy}"
+       }, '%x %y %X %Y')
+
+Tk.root.bind('v', proc{
+               puts ch0[:values].join(' ')
+               puts ch0[:values].size
+             })
+
+Tk.root.bind('p', proc{
+               c.postscript(:file=>'DEMO.ps')
+               puts "DEMO.ps printed"
+             })
+
+Tk.root.bind('q', proc{exit})
+
+#####################
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/pie.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/pie.rb
new file mode 100644
index 0000000..c8f9276
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/pie.rb
@@ -0,0 +1,56 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu/pie'
+
+pie = Tk::Vu::Pie.new(:label=>"My Revolving Budget"){
+  itemconfigure('Welfare',   :value=>3.004)
+  itemconfigure('Military',  :value=>7.006)
+  itemconfigure('Transport', :value=>1.6, :explode=>15)
+  itemconfigure('Parks',     :value=>0.9)
+  itemconfigure('Schools',   :value=>2)
+  itemconfigure('Debt',      :value=>4,   :explode=>10)
+
+  configure(:angle=>10, :origin=>90, :shadow=>10)
+}
+
+spin = TkTimer.new(60, -1, proc{|obj|
+  pie.configure(:origin=>pie[:origin] + 1)
+})
+
+f = TkFrame.new
+fast_btn = TkButton.new(f, :text=>"Spin Faster", :command=>proc{spin.start})
+slow_btn = TkButton.new(f, :text=>"Spin Slower", :command=>proc{spin.stop})
+quit_btn = TkButton.new(f, :text=>"Exit", :command=>proc{exit})
+
+Tk.grid(pie, :sticky=>:news)
+Tk.grid(f, :sticky=>:ew)
+
+Tk.pack(fast_btn, slow_btn, quit_btn,
+        :in=>f, :side=>:left, :fill=>:both, :expand=>true, :padx=>6, :pady=>4)
+
+Tk.root.grid_columnconfigure(0, :weight=>1)
+Tk.root.grid_rowconfigure(0, :weight=>1)
+
+priv = {
+  :x=>0, :y=>0, :pie_in=>false, :angle=>pie[:angle], :origin=>pie[:origin]
+}
+
+pie.bind('ButtonPress-1', proc{|w, x, y|
+             priv[:x] = x
+             priv[:y] = y
+             priv[:pie_in] = (w.winfo_width/1.8 > x)
+             priv[:angle]  = w[:angle]
+             priv[:origin] = w[:origin]
+         }, '%W %x %y')
+
+pie.bind('B1-Motion', proc{|w, x, y|
+           if priv[:pie_in]
+             w.configure(:angle=>priv[:angle] + (priv[:y] - y)/3,
+                         :origin=>(priv[:origin] +
+                                   ((w.winfo_height/2.2 > y)? -1: 1) *
+                                   (priv[:x] - x)/3) % 360)
+           end
+         }, '%W %x %y')
+
+Tk.mainloop
diff --git a/jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb b/jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb
new file mode 100644
index 0000000..358d324
--- /dev/null
+++ b/jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb
@@ -0,0 +1,67 @@
+#!/usr/bin/env ruby
+
+require 'tk'
+require 'tkextlib/vu'
+
+#######################################
+
+puts "Show off barchart and dial widgets"
+
+speed = TkVariable.new(0)
+
+dial = Tk::Vu::Dial.new(:resolution=>0.001, :from=>-0.1, :to=>0.1,
+                        :showvalue=>true, :minortickinterval=>0.01,
+                        :tickinterval=>0.1, :radius=>50, :label=>"Dial",
+                        :beginangle=>-20, :endangle=>260, :dialcolor=>'red3',
+                        :active=>'red2', :variable=>speed)
+
+bar = Tk::Vu::Bargraph.new(:from=>0, :to=>100, :relief=>:groove,
+                           :border=>2, :label=>"Bar Chart")
+
+#######################################
+
+green   = 25
+blue    = 50
+purple  = 75
+current = 50
+
+def rand_bool
+
+end
+
+update = TkTimer.new(200, -1, proc{
+                       if (rand() - 0.5 + speed.numeric * 3) > 0
+                         current += 1
+                       else
+                         current -= 1
+                       end
+                       bar.set(current)
+                       if current < green
+                         current = 100 if current <= 0
+                         bar[:barcolor] = 'green'
+                       elsif current < blue
+                         bar[:barcolor] = 'blue'
+                       elsif current < purple
+                         bar[:barcolor] = 'purple'
+                       else
+                         bar[:barcolor] = 'red'
+                         current = 0 if current >= 100
+                       end
+                     })
+
+#######################################
+
+gobar = TkButton.new(:text=>"Start", :command=>proc{update.start})
+nobar = TkButton.new(:text=>"Stop",  :command=>proc{update.stop})
+quit  = TkButton.new(:text=>"Exit",  :command=>proc{exit})
+
+Tk.grid('x', gobar, :sticky=>:ew, :padx=>4, :pady=>4)
+Tk.grid(dial, bar, :sticky=>:news)
+Tk.grid('x', nobar, :sticky=>:ew, :padx=>4, :pady=>4)
+Tk.grid(quit, '-', '-', :sticky=>:ew, :padx=>4, :pady=>4)
+Tk.root.grid_columnconfigure(2, :weight=>1)
+Tk.root.grid_rowconfigure(1, :weight=>1)
+
+#######################################
+
+Tk.mainloop