note
	description: "Eiffel Vision positionable, implementation interface."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date$"
	revision: "$Revision$"

deferred class
	EV_POSITIONABLE_I

inherit
	EV_POSITIONED_I
		redefine
			interface
		end

feature -- Status setting

	set_x_position (a_x: INTEGER)
			-- Set horizontal offset to parent to `a_x'.
		deferred
		ensure
			x_position_assigned: x_position = a_x
		end

	set_y_position (a_y: INTEGER)
			-- Set vertical offset to parent to `a_y'.
		deferred
		ensure
			y_position_assigned: y_position = a_y
		end

	set_position (a_x, a_y: INTEGER)
			-- Set horizontal offset to parent to `a_x'.
			-- Set vertical offset to parent to `a_y'.
		deferred
		ensure
			x_position_assigned: x_position = a_x
			y_position_assigned: y_position = a_y
		end

	set_width (a_width: INTEGER)
			-- Set the horizontal size to `a_width'.
		require
			a_width_positive_or_zero: a_width >= 0
		deferred
		ensure
			width_assigned: width = minimum_width or else width = a_width
		end

	set_height (a_height: INTEGER)
			-- Set the vertical size to `a_height'.
		require
			a_height_positive_or_zero: a_height >= 0
		deferred
		ensure
			height_assigned: height = minimum_height or else height = a_height
		end

	set_size (a_width, a_height: INTEGER)
			-- Set the horizontal size to `a_width'.
			-- Set the vertical size to `a_height'.
		require
			a_width_positive_or_zero: a_width >= 0
			a_height_positive_or_zero: a_height >= 0
		deferred
		ensure
			width_assigned: width = minimum_width or else width = a_width
			height_assigned: height = minimum_height or else height = a_height
		end

feature {EV_ANY, EV_ANY_I} -- Implementation

	interface: detachable EV_POSITIONABLE note option: stable attribute end;

note
	copyright:	"Copyright (c) 1984-2006, Eiffel Software and others"
	license:	"Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
			 Eiffel Software
			 356 Storke Road, Goleta, CA 93117 USA
			 Telephone 805-685-1006, Fax 805-685-6869
			 Website http://www.eiffel.com
			 Customer support http://support.eiffel.com
		]"




end -- class EV_POSITIONABLE_I