added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 109 insertions, 0 deletions

diff --git a/trunk/ext/tk/sample/demos-en/check2.rb b/trunk/ext/tk/sample/demos-en/check2.rb
new file mode 100644
index 0000000000..faea748a87
--- /dev/null
+++ b/trunk/ext/tk/sample/demos-en/check2.rb
@@ -0,0 +1,109 @@
+#
+# checkbutton widget demo2 (called by 'widget')
+#
+
+# delete old toplevel widget
+if defined?($check2_demo) && $check2_demo
+  $check2_demo.destroy 
+  $check2_demo = nil
+end
+
+# create demo toplevel widget
+$check2_demo = TkToplevel.new {|w|
+  title("Checkbutton Demonstration 2")
+  iconname("check2")
+  positionWindow(w)
+}
+
+base_frame = TkFrame.new($check2_demo).pack(:fill=>:both, :expand=>true)
+
+# label
+msg = TkLabel.new(base_frame) {
+  font $font
+  wraplength '4i'
+  justify 'left'
+  text "Four checkbuttons are displayed below.  If you click on a button, it will toggle the button's selection state and set a Tcl variable to a value indicating the state of the checkbutton.  The first button also follows the state of the other three.  If only some of the three are checked, the first button will display the tri-state mode. Click the \"See Variables\" button to see the current values of the variables."
+}
+msg.pack('side'=>'top')
+
+# variable
+safety = TkVariable.new(0)
+wipers = TkVariable.new(0)
+brakes = TkVariable.new(0)
+sober  = TkVariable.new(0)
+
+# frame
+TkFrame.new(base_frame) {|frame|
+  TkGrid(TkFrame.new(frame, :height=>2, :relief=>:sunken, :bd=>2), 
+         :columnspan=>4, :row=>0, :sticky=>'ew', :pady=>2)
+  TkGrid('x', 
+         TkButton.new(frame, :text=>'See Variables', 
+                      :image=>$image['view'], :compound=>:left, 
+                      :command=>proc{
+                        showVars($check2_demo, 
+                                 ['safety', safety], ['wipers', wipers], 
+                                 ['brakes', brakes], ['sober', sober])
+                      }), 
+         TkButton.new(frame, :text=>'See Code', 
+                      :image=>$image['view'], :compound=>:left, 
+                      :command=>proc{showCode 'check2'}), 
+         TkButton.new(frame, :text=>'Dismiss', 
+                      :image=>$image['delete'], :compound=>:left, 
+                      :command=>proc{
+                        tmppath = $check2_demo
+                        $check2_demo = nil
+                        $showVarsWin[tmppath.path] = nil
+                        tmppath.destroy
+                      }), 
+         :padx=>4, :pady=>4)
+  frame.grid_columnconfigure(0, :weight=>1)
+}.pack('side'=>'bottom', 'fill'=>'x')
+
+
+# checkbutton
+TkCheckButton.new(base_frame, :text=>'Safety Check', :variable=>safety, 
+                  :relief=>:flat, :onvalue=>'all', :offvalue=>'none', 
+                  :tristatevalue=>'partial'){
+  pack('side'=>'top', 'pady'=>2, 'anchor'=>'w')
+}
+
+[ TkCheckButton.new(base_frame, 'text'=>'Wipers OK', 'variable'=>wipers),
+  TkCheckButton.new(base_frame, 'text'=>'Brakes OK', 'variable'=>brakes),
+  TkCheckButton.new(base_frame, 'text'=>'Driver Sober', 'variable'=>sober)
+].each{|w| 
+  w.relief('flat')
+  w.pack('side'=>'top', 'padx'=>15, 'pady'=>2, 'anchor'=>'w')
+}
+
+# tristate check
+in_check = false
+tristate_check = proc{|n1,n2,op|
+  unless in_check
+    in_check = true
+    begin
+      if n1 == safety
+        if safety == 'none'
+          wipers.value = 0
+          brakes.value = 0
+          sober.value  = 0
+        elsif safety == 'all'
+          wipers.value = 1
+          brakes.value = 1
+          sober.value  = 1
+        end
+      else
+        if wipers == 1 && brakes == 1 && sober == 1
+          safety.value = 'all'
+        elsif wipers == 1 || brakes == 1 || sober == 1
+          safety.value = 'partial'
+        else
+          safety.value = 'none'
+        end
+      end
+    ensure
+      in_check = false
+    end
+  end
+}
+
+[wipers, brakes, sober, safety].each{|v| v.trace('w', tristate_check)}