1 files changed, 82 insertions, 0 deletions
diff --git a/jni/ruby/ext/tk/lib/tk/scrollable.rb b/jni/ruby/ext/tk/lib/tk/scrollable.rb
new file mode 100644
index 0000000..96959b7
--- /dev/null
+++ b/jni/ruby/ext/tk/lib/tk/scrollable.rb
@@ -0,0 +1,82 @@
+#
+# tk/scrollable.rb : module for scrollable widget
+#
+require 'tk'
+
+module Tk
+  module XScrollable
+    def xscrollcommand(cmd=Proc.new)
+      configure_cmd 'xscrollcommand', cmd
+      # Tk.update  # avoid scrollbar trouble
+      self
+    end
+
+    def xview(*index)
+      if index.size == 0
+        list(tk_send_without_enc('xview'))
+      else
+        tk_send_without_enc('xview', *index)
+        self
+      end
+    end
+    def xview_moveto(*index)
+      xview('moveto', *index)
+    end
+    def xview_scroll(*index)
+      xview('scroll', *index)
+    end
+
+    def xscrollbar(bar=nil)
+      if bar
+        @xscrollbar = bar
+        @xscrollbar.orient 'horizontal'
+        self.xscrollcommand {|*arg| @xscrollbar.set(*arg)}
+        @xscrollbar.command {|*arg| self.xview(*arg)}
+        Tk.update  # avoid scrollbar trouble
+      end
+      @xscrollbar
+    end
+  end
+
+  module YScrollable
+    def yscrollcommand(cmd=Proc.new)
+      configure_cmd 'yscrollcommand', cmd
+      # Tk.update  # avoid scrollbar trouble
+      self
+    end
+
+    def yview(*index)
+      if index.size == 0
+        list(tk_send_without_enc('yview'))
+      else
+        tk_send_without_enc('yview', *index)
+        self
+      end
+    end
+    def yview_moveto(*index)
+      yview('moveto', *index)
+    end
+    def yview_scroll(*index)
+      yview('scroll', *index)
+    end
+
+    def yscrollbar(bar=nil)
+      if bar
+        @yscrollbar = bar
+        @yscrollbar.orient 'vertical'
+        self.yscrollcommand {|*arg| @yscrollbar.set(*arg)}
+        @yscrollbar.command {|*arg| self.yview(*arg)}
+        Tk.update  # avoid scrollbar trouble
+      end
+      @yscrollbar
+    end
+  end
+
+  X_Scrollable = XScrollable
+  Y_Scrollable = YScrollable
+
+  module Scrollable
+    include XScrollable
+    include YScrollable
+  end
+end