1 files changed, 47 insertions, 0 deletions
diff --git a/ruby_1_8_5/ext/tk/sample/tktimer2.rb b/ruby_1_8_5/ext/tk/sample/tktimer2.rb
new file mode 100644
index 0000000000..dd31bb098e
--- /dev/null
+++ b/ruby_1_8_5/ext/tk/sample/tktimer2.rb
@@ -0,0 +1,47 @@
+#!/usr/bin/env ruby
+# This script is a re-implementation of tktimer.rb with TkTimer(TkAfter) class.
+
+require "tk"
+
+# new notation :
+#   * symbols are acceptable as keys or values of the option hash
+#   * the parent widget can be given by :parent key on the option hash 
+root = TkRoot.new(:title=>'timer sample')
+label = TkLabel.new(:parent=>root, :relief=>:raised, :width=>10) \
+               .pack(:side=>:bottom, :fill=>:both)
+
+# define the procedure repeated by the TkTimer object
+tick = proc{|aobj| #<== TkTimer object
+  cnt = aobj.return_value + 5 # return_value keeps a result of the last proc
+  label.text format("%d.%02d", *(cnt.divmod(100)))
+  cnt #==> return value is kept by TkTimer object
+      #    (so, can be send to the next repeat-proc)
+}
+
+timer = TkTimer.new(50, -1, tick).start(0, proc{ label.text('0.00'); 0 })
+        # ==> repeat-interval : (about) 50 ms,  
+        #     repeat : infinite (-1) times, 
+        #     repeat-procedure : tick (only one, in this case)
+        #
+        # ==> wait-before-call-init-proc : 0 ms, 
+        #     init_proc : proc{ label.text('0.00'); 0 }
+        #
+        # (0ms)-> init_proc ->(50ms)-> tick ->(50ms)-> tick ->....
+
+TkButton.new(:text=>'Start') {
+  command proc{ timer.continue unless timer.running? }
+  pack(:side=>:left, :fill=>:both, :expand=>true)
+}
+TkButton.new(:text=>'Restart') {
+  command proc{ timer.restart(0, proc{ label.text('0.00'); 0 }) }
+  pack(:side=>:left, :fill=>:both, :expand=>true)
+}
+TkButton.new(:text=>'Stop') {
+  command proc{ timer.stop if timer.running? }
+  pack('side'=>'right','fill'=>'both','expand'=>'yes')
+}
+
+ev_quit = TkVirtualEvent.new('Control-c', 'Control-q')
+Tk.root.bind(ev_quit, proc{Tk.exit}).focus
+
+Tk.mainloop