* ext/tk/, ext/tcltklib/: bug fix

* ext/tk/lib/tk.rb: better operation for SIGINT when processing callbacks.
* ext/tk/lib/tk/msgcat.rb: ditto.
* ext/tk/lib/tk/variable.rb: ditto.
* ext/tk/lib/tk/timer.rb: ditto.
* ext/tk/lib/tk/validation.rb: add Tk::ValidateConfigure.__def_validcmd()
  to define validatecommand methods easier
* ext/tk/lib/tk.rb (_genobj_for_tkwidget): support autoload Tk ext classes
* ext/tk/lib/tk/canvas.rb and so on: remove the parent widget type check
  for items (e.g. canvas items; depends on the class) to avoid some troubles
  on Tk extension widget class definition.
* ext/tk/lib/tkextlib/: add Iwidget and TkTable extension support
* ext/tk/sample/tkextlib/: add samples of Iwidget and TkTable


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6630 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 76 insertions, 0 deletions

diff --git a/ext/tk/sample/tkextlib/tktable/buttons.rb b/ext/tk/sample/tkextlib/tktable/buttons.rb
new file mode 100644
index 0000000000..b6995bb54b
--- /dev/null
+++ b/ext/tk/sample/tkextlib/tktable/buttons.rb
@@ -0,0 +1,76 @@
+#!/usr/bin/env ruby
+##
+## buttons.rb
+##
+## demonstrates the simulation of a button array
+##
+## ( based on 'buttons.tcl' included source archive of tktable extension )
+##
+require 'tk'
+require 'tkextlib/tktable'
+
+# create the table
+tab  = TkVariable.new_hash
+rows = 20
+cols = 20
+
+table = Tk::TkTable.new(:rows=>rows + 1, :cols=>cols + 1, 
+			:variable=>tab, :titlerows=>1, :titlecols=>1, 
+			:roworigin=>-1, :colorigin=>-1, 
+			:colwidth=>4, :width=>8, :height=>8, 
+			:cursor=>'top_left_arrow', :borderwidth=>2, 
+			:flashmode=>false, :state=>:disabled)
+
+sx = table.xscrollbar(TkScrollbar.new)
+sy = table.yscrollbar(TkScrollbar.new)
+
+Tk.grid(table, sy, :sticky=>:news)
+Tk.grid(sx, :sticky=>:ew)
+
+Tk.root.grid_columnconfig(0, :weight=>1)
+Tk.root.grid_rowconfig(0, :weight=>1)
+
+# set up tags for the various states of the buttons
+table.tag_configure('OFF', :bg=>'red',    :relief=>:raised)
+table.tag_configure('ON',  :bg=>'green',  :relief=>:sunken)
+table.tag_configure('sel', :bg=>'gray75', :relief=>:flat)
+
+# clean up if mouse leaves the widget
+table.bind('Leave', proc{|w| w.selection_clear_all}, '%W')
+
+# highlight the cell under the mouse
+table.bind('Motion', proc{|w, x, y|
+	     Tk.callback_break if w.selection_include?(TkComm._at(x,y))
+	     w.selection_clear_all
+	     w.selection_set(TkComm._at(x,y))
+	     Tk.callback_break
+	     ## "break" prevents the call to tkTableCheckBorder
+	   }, '%W %x %y')
+
+# mousebutton 1 toggles the value of the cell
+# use of "selection includes" would work here
+table.bind('1', proc{|w, x, y|
+	     #rc = w.curselection[0]
+	     rc = w.index(TkComm._at(x,y))
+	     if tab[rc] == 'ON'
+	       tab[rc] = 'OFF'
+	       w.tag_cell('OFF', rc)
+	     else
+	       tab[rc] = 'ON'
+	       w.tag_cell('ON', rc)
+	     end}, '%W %x %y')
+
+
+# inititialize the array, titles, and celltags
+0.step(rows){|i|
+  tab[i,-1] = i
+  0.step(cols){|j|
+    if i == 0
+      tab[-1,j] = j
+    end 
+    tab[i,j] = "OFF"
+    table.tag_cell('OFF', "#{i},#{j}")
+  }
+}
+
+Tk.mainloop