# NSSize- Define a fake NSSize class and methods that go with it
#
#  $Id: NSSize.rb,v 1.2 2001/10/01 13:42:47 ljulliar Exp $
#
#    Copyright (C) 2001 Free Software Foundation, Inc.
#   
#    Written by:  Laurent Julliard <laurent@julliard-online.org>
#    Date: September 2001
#  
#    This file is part of the GNUstep RubyInterface Library.
#
#    This library is free software; you can redistribute it and/or
#    modify it under the terms of the GNU Library General Public
#    License as published by the Free Software Foundation; either
#    version 2 of the License, or (at your option) any later version.
#   
#    This library is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#    Library General Public License for more details.
#   
#    You should have received a copy of the GNU Library General Public
#    License along with this library; if not, write to the Free
#    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
#

require 'rigs/CStruct'

class NSSize < CStruct

    # Define a "fake" new method that simply returns 
    # a CStruct
    def NSSize.new(width, height)
	newSize = CStruct[width, height]
	if (newSize._validSize?)
	    return newSize
	else
	    raise ArgumentError,"NSSize 'x' or 'y' argument not valid", caller
	end
    end

end

class CStruct

    def equalToSize? (aSize)
	self == aSize
    end

    def emptySize?
	(self.width == 0) || (self.height == 0)
    end

    def _validSize?
	( (self.kind_of? CStruct) && (self.array_size == 2) &&
	(self[0].kind_of? Numeric) && (self[1].kind_of? Numeric) )
    end

end

NSZeroSize = NSSize.new(0,0)