From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb | 67 +++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb

(limited to 'jni/ruby/ext/tk/sample/tkextlib/vu/vu_demo.rb')

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
-- 
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