/usr/lib/ruby/2.0.0/tk/scrollable.rb is in ruby2.0-tcltk 2.0.0.484-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# 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
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