indexing
	description: "[
		
							An EV_FIGURE_RECTANGLE is defined by pa and pb
							and not rotatable. If you need a rotatable rectangle
							use a EV_FIGURE_PARALLELOGRAM but if not rectangle
							is faster.
							
								pa-----------
								|			 |
								| 			 |
								|   center   |
								|			 |
								|			 |
								 ----------- pb			
							
	]"
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2006-01-22 18:25:44 -0800 (Sun, 22 Jan 2006) $"
	revision: "$Revision: 56675 $"

class interface
	EV_MODEL_RECTANGLE

create 
	make_rectangle (a_x, a_y, a_width, a_height: INTEGER_32)
			-- Create a EV_FIGURE_RECTANLGE with top left position at (`a_x', `a_y') 
			-- and width `a_width' and height `a_height'

	make_with_points (a_point_a, a_point_b: EV_COORDINATE)
			-- Create on `a_point_a' and `a_point_b'.
			-- (from EV_MODEL_DOUBLE_POINTED)
		require -- from EV_MODEL_DOUBLE_POINTED
			a_point_a_not_void: a_point_a /= Void
			a_point_b_not_void: a_point_b /= Void

	default_create
			-- Create a EV_FIGURE_RECTANGLE at (0,0) with no dimension.
		require -- from  ANY
			True

	make_with_positions (a_point_a_x, a_point_a_y, a_point_b_x, a_point_b_y: INTEGER_32)
			-- Create on position (`a_point_a_x' `a_point_a_y') and (`a_point_b_x', `a_point_b_y')
			-- (from EV_MODEL_DOUBLE_POINTED)

feature -- Access

	angle: REAL_64 is 0.0
			-- Since not rotatable.

	background_color: EV_COLOR
			-- Color used to fill `Current'.
			-- (from EV_MODEL_CLOSED)

	dashed_line_style: BOOLEAN
			-- Are lines drawn dashed?
			-- (from EV_MODEL_ATOMIC)

	foreground_color: EV_COLOR
			-- Color of text, lines, etc.
			-- (from EV_MODEL_ATOMIC)

	generating_type: STRING_8
			-- Name of current object's generating type
			-- (type of which it is a direct instance)
			-- (from ANY)

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)

	group: EV_MODEL_GROUP
			-- The group `Current' is part of. Void if `Current' is 
			-- not part of a group.
			-- (from EV_MODEL)

	height: INTEGER_32
			-- The vertical distance between point_a and point_b.

	id: INTEGER_32
			-- Unique id.
			-- (from EV_MODEL)
		ensure -- from HASHABLE
			good_hash_value: Result >= 0

	frozen id_object (an_id: INTEGER_32): IDENTIFIED
			-- Object associated with `an_id' (void if no such object)
			-- (from IDENTIFIED)
		ensure -- from IDENTIFIED
			consistent: Result = Void or else Result.object_id = an_id

	is_rotatable: BOOLEAN is False
			-- Rectangle is not rotatable.

	is_scalable: BOOLEAN is True
			-- Rectangle is scalable.

	is_transformable: BOOLEAN is False
			-- Rectangle is not transformable.

	line_width: INTEGER_32
			-- Thickness of lines.
			-- (from EV_MODEL_ATOMIC)

	frozen object_id: INTEGER_32
			-- Unique for current object in any given session
			-- (from IDENTIFIED)
		ensure -- from IDENTIFIED
			valid_id: id_object (Result) = Current

	pebble: ANY
			-- Data to be transported by pick and drop mechanism.
			-- (from EV_MODEL)

	pebble_function: FUNCTION [ANY, TUPLE, ANY]
			-- Returns data to be transported by pick and drop mechanism.
			-- When not `Void', pebble is ignored.
			-- (from EV_MODEL)

	point_a: EV_COORDINATE
			-- First point of `Current'.
			-- (from EV_MODEL_SINGLE_POINTED)
		ensure -- from EV_MODEL_SINGLE_POINTED
			result_exists: Result /= Void
			result_x_equal_point_x: Result.x = point_a_x
			result_y_eqyal_point_y: Result.y = point_a_y

	point_a_x: INTEGER_32
			-- x position of point_a.

	point_a_y: INTEGER_32
			-- y position of point_a.

	point_b: EV_COORDINATE
			-- Second point of `Current'.
			-- (from EV_MODEL_DOUBLE_POINTED)
		ensure -- from EV_MODEL_DOUBLE_POINTED
			result_exists: Result /= Void
			result_x_equal_point_b_x: Result.x = point_b_x
			result_y_equal_point_b_y: Result.y = point_b_y

	point_b_relative: EV_COORDINATE
			-- point_b relative to group.`point'.
			-- (from EV_MODEL_DOUBLE_POINTED)
		ensure -- from EV_MODEL_DOUBLE_POINTED
			result_exists: Result /= Void
			result_x_equal_point_b_x_relative: Result.x = point_b_x_relative
			result_y_eqyal_point_b_y_relative: Result.y = point_b_y_relative

	point_b_x: INTEGER_32
			-- x position of point_b.

	point_b_x_relative: INTEGER_32
			-- horizontal distance between point_b_x and group.`point_x'.
			-- (from EV_MODEL_DOUBLE_POINTED)

	point_b_y: INTEGER_32
			-- y position of point_b.

	point_b_y_relative: INTEGER_32
			-- vertical distance between point_b_y and group.`point_y'.
			-- (from EV_MODEL_DOUBLE_POINTED)

	point_count: INTEGER_32
			-- Number of points needed to describe `Current'.
			-- Without center.
			-- (from EV_MODEL)
		require -- from  EV_MODEL_SINGLE_POINTED
			True
		ensure -- from EV_MODEL
			correct: Result = point_array.count

	point_relative: EV_COORDINATE
			-- `point' relative to group.`point'.
			-- (from EV_MODEL_SINGLE_POINTED)
		ensure -- from EV_MODEL_SINGLE_POINTED
			result_exists: Result /= Void
			result_x_equal_point_x_relative: Result.x = point_a_x_relative
			result_y_eqyal_point_y_relative: Result.y = point_a_y_relative

	point_a_x_relative: INTEGER_32
			-- horizontal distance between `point_x' and group.`point_x'.
			-- (from EV_MODEL_SINGLE_POINTED)

	point_a_y_relative: INTEGER_32
			-- vertical distance between `point_y' and group.`point_y'.
			-- (from EV_MODEL_SINGLE_POINTED)

	pointer_style: EV_POINTER_STYLE
			-- Cursor displayed when pointer is over this figure.
			-- (from EV_MODEL)

	target_name: STRING_GENERAL
			-- Optional textual name describing `Current' pick and drop hole.
			-- (from EV_ABSTRACT_PICK_AND_DROPABLE)

	top_left: EV_COORDINATE
			-- position of the top left corner.

	width: INTEGER_32
			-- The horizontal distance between point_a and point_b

	world: EV_MODEL_WORLD
			-- The world `Current' is part of. Void if `Current' is
			-- not part of a world
			-- (from EV_MODEL)

	x: INTEGER_32
			-- x position of the center on the screen.
			-- (from EV_MODEL)

	y: INTEGER_32
			-- y position of the center on the screen .
			-- (from EV_MODEL)
	
feature -- Comparison

	frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			shallow_implies_deep: standard_equal (some, other) implies Result
			both_or_none_void: (some = Void) implies (Result = (other = Void))
			same_type: (Result and (some /= Void)) implies some.same_type (other)
			symmetric: Result implies deep_equal (other, some)

	frozen equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))

	is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other.is_equal (Current)
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))

	frozen standard_is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of `other' (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	is_filled: BOOLEAN
			-- Is this figure filled?
			-- (from EV_MODEL_CLOSED)

	is_hashable: BOOLEAN
			-- May current object be hashed?
			-- (True if it is not its type's default.)
			-- (from HASHABLE)
		ensure -- from HASHABLE
			ok_if_not_default: Result implies (Current /= default)

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of `other'?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
	
feature -- Status setting

	disable_dashed_line_style
			-- Draw lines solid.
			-- (from EV_MODEL_ATOMIC)
		ensure -- from EV_MODEL_ATOMIC
			dashed_line_style_disabled: not dashed_line_style

	enable_dashed_line_style
			-- Draw lines dashed.
			-- (from EV_MODEL_ATOMIC)
		ensure -- from EV_MODEL_ATOMIC
			dashed_line_style_enabled: dashed_line_style

	remove_background_color
			-- Do not fill this figure.
			-- (from EV_MODEL_CLOSED)
		ensure -- from EV_MODEL_CLOSED
			background_color_removed: background_color = Void

	set_background_color (a_color: EV_COLOR)
			-- Set background_color to `a_color'.
			-- (from EV_MODEL_CLOSED)
		require -- from EV_MODEL_CLOSED
			a_color_exists: a_color /= Void
		ensure -- from EV_MODEL_CLOSED
			background_color_assigned: background_color = a_color

	set_foreground_color (a_color: EV_COLOR)
			-- Assign `a_color' to foreground_color.
			-- (from EV_MODEL_ATOMIC)
		require -- from EV_MODEL_ATOMIC
			a_color_not_void: a_color /= Void
		ensure -- from EV_MODEL_ATOMIC
			foreground_color_assigned: foreground_color = a_color

	set_line_width (a_width: INTEGER_32)
			-- Assign `a_width' to line_width.
			-- (from EV_MODEL_ATOMIC)
		require -- from EV_MODEL_ATOMIC
			a_width_non_negative: a_width >= 0
		ensure -- from EV_MODEL_ATOMIC
			line_width_assigned: line_width = a_width

	set_point_b_position_relative (ax, ay: INTEGER_32)
			-- Set position of point_b_relative to (`ax', `ay').
			-- (from EV_MODEL_DOUBLE_POINTED)

	set_point_a_position_relative (ax, ay: INTEGER_32)
			-- Set position of point_relative to (`ax', `ay').
			-- (from EV_MODEL_SINGLE_POINTED)

	set_target_name (a_name: STRING_GENERAL)
			-- Assign `a_name' to target_name.
			-- (from EV_ABSTRACT_PICK_AND_DROPABLE)
		require -- from EV_ABSTRACT_PICK_AND_DROPABLE
			a_name_not_void: a_name /= Void
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			target_name_assigned: a_name /= target_name and a_name.is_equal (target_name)
	
feature -- Element change

	remove_pebble
			-- Make pebble `Void' and pebble_function `Void,
			-- Removing transport.
			-- (from EV_MODEL)
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			pebble_removed: pebble = Void and pebble_function = Void

	rotate (an_angle: REAL_64)
			-- Rotate around the center for `an_angle'.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_rotatable: is_rotatable
		ensure -- from EV_MODEL
			center_valid: is_center_valid

	rotate_around (an_angle: REAL_64; ax, ay: INTEGER_32)
			-- Rotate around (`ax', `ay') for `an_angle'.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_rotatable: is_rotatable
		ensure -- from EV_MODEL
			center_valid: is_center_valid

	scale (a_scale: REAL_64)
			-- Scale to x and y direction for `a_scale'.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_bigger_zero: a_scale > 0.0

	scale_abs (a_scale: REAL_64)
			-- Scale to x and y direction for `a_scale'.
			-- Do not rotate around Angle first.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_bigger_zero: a_scale > 0.0

	scale_x (a_scale_x: REAL_64)
			-- Scale to x direction for `a_scale_x'.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_x_bigger_zero: a_scale_x > 0.0

	scale_x_abs (a_scale_x: REAL_64)
			-- Scale absolute to x direction for `a_scale_x'.
			-- Do not rotate around Angle first.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_x_bigger_zero: a_scale_x > 0.0

	scale_y (a_scale_y: REAL_64)
			-- Scale to y direction for `a_scale_y'.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_y_bigger_zero: a_scale_y > 0.0

	scale_y_abs (a_scale_y: REAL_64)
			-- Scale to y direction for `a_scale_y'.
			-- Do not rotate around Angle first.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			is_scalable: is_scalable
			a_scale_y_bigger_zero: a_scale_y > 0.0

	set_accept_cursor (a_cursor: EV_POINTER_STYLE)
			-- Set `a_cursor' to be displayed when the screen pointer is over a
			-- target that accepts pebble during pick and drop.
			-- (from EV_MODEL)
		require -- from EV_ABSTRACT_PICK_AND_DROPABLE
			a_cursor_not_void: a_cursor /= Void
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			accept_cursor_assigned: accept_cursor.is_equal (a_cursor)

	set_deny_cursor (a_cursor: EV_POINTER_STYLE)
			-- Set `a_cursor' to be displayed when the screen pointer is not
			-- over a valid target.
			-- (from EV_MODEL)
		require -- from EV_ABSTRACT_PICK_AND_DROPABLE
			a_cursor_not_void: a_cursor /= Void
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			deny_cursor_assigned: deny_cursor.is_equal (a_cursor)

	set_height (a_height: INTEGER_32)
			-- Set height to `a_height'.
		require
			a_height_positive: a_height >= 0
		ensure
			height_set: height = a_height

	set_pebble (a_pebble: like pebble)
			-- Assign `a_pebble' to pebble.
			-- (from EV_MODEL)
		require -- from EV_ABSTRACT_PICK_AND_DROPABLE
			a_pebble_not_void: a_pebble /= Void
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			pebble_assigned: pebble = a_pebble

	set_pebble_function (a_function: FUNCTION [ANY, TUPLE, ANY])
			-- Set `a_function' to compute pebble.
			-- (from EV_MODEL)
		require -- from EV_ABSTRACT_PICK_AND_DROPABLE
			a_function_not_void: a_function /= Void
			a_function_takes_two_integer_open_operands: a_function.valid_operands ([1, 1])
		ensure -- from EV_ABSTRACT_PICK_AND_DROPABLE
			pebble_function_assigned: pebble_function = a_function

	set_point_a_position (ax, ay: INTEGER_32)
			-- Set position of point_a to position of (`ax', `ay').

	set_point_b_position (ax, ay: INTEGER_32)
			-- Set position of point_b to position of (`ax', `ay').

	set_pointer_style (a_cursor: like pointer_style)
			-- Assign `a_cursor' to pointer_style.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			a_cursor_not_void: a_cursor /= Void
		ensure -- from EV_MODEL
			pointer_style_assigned: pointer_style = a_cursor

	set_width (a_width: INTEGER_32)
			-- Set width to `a_width'.
		require
			a_width_positive: a_width >= 0
		ensure
			width_set: width = a_width

	set_x (a_x: INTEGER_32)
			-- Set x to `an_x'.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			x_set: a_x = x
			center_valid: is_center_valid

	set_x_y (a_x, a_y: INTEGER_32)
			-- Set x to `a_x' and y to `a_y'.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			set: a_x = x and a_y = y
			center_valid: is_center_valid

	set_y (a_y: INTEGER_32)
			-- Set y to `an_y'.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			y_set: a_y = y
			center_valid: is_center_valid

	transform (a_transformation: EV_MODEL_TRANSFORMATION)
			-- Transform all points in point_array using `a_transformation'.
			-- You can do any transformation you want. You can
			-- for example rotate `Current' around an other point
			-- than the center.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			a_transformation_not_void: a_transformation /= Void
			is_transformable: is_transformable
	
feature -- Duplication

	copy (other: like Current)
			-- Update current object using fields of object attached
			-- to `other', so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: is_equal (other)

	frozen deep_copy (other: like Current)
			-- Effect equivalent to that of:
			--		copy (`other' . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: like Current
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: like Current)
			-- Copy every field of `other' onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: like Current
			-- New object field-by-field identical to `other'.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: like Current
			-- New object equal to `Current'
			-- twin calls copy; to change copying/twining semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result.is_equal (Current)
	
feature -- Basic operations

	frozen default: like Current
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type `POINTER'
			-- (Avoid the need to write `p'.default for
			-- some `p' of type `POINTER'.)
			-- (from ANY)

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)
	
feature -- Action sequences

	conforming_pick_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when a pebble that fits this hole is
			-- picked up from another source.
			-- (when drop_actions.accepts_pebble (pebble))
			-- (from EV_MODEL)

	drop_actions: EV_PND_ACTION_SEQUENCE
			-- Actions to take when pick and drop transport drops on `Current'.
			-- (from EV_MODEL)

	pick_actions: EV_PND_START_ACTION_SEQUENCE
			-- Actions to be performed when pebble is picked up.
			-- (from EV_MODEL)

	pointer_button_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer button is pressed.
			-- (from EV_MODEL)

	pointer_button_release_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer button is released.
			-- (from EV_MODEL)

	pointer_double_press_actions: EV_POINTER_BUTTON_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer is double clicked.
			-- (from EV_MODEL)

	pointer_enter_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer enters widget.
			-- (from EV_MODEL)

	pointer_leave_actions: EV_NOTIFY_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer leaves widget.
			-- (from EV_MODEL)

	pointer_motion_actions: EV_POINTER_MOTION_ACTION_SEQUENCE
			-- Actions to be performed when screen pointer moves.
			-- (from EV_MODEL)
	
feature -- Events

	bounding_box: EV_RECTANGLE
			-- Is (`ax', `ay') on this figure?
		require -- from  EV_MODEL
			True
		ensure -- from EV_MODEL
			result_not_void: Result /= Void
			internal_is_twin: internal_bounding_box /= Result

	position_on_figure (a_x, a_y: INTEGER_32): BOOLEAN
			-- Is the point on (`a_x', `a_y') on this figure?
	
feature -- Output

	io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of tagged_out.
			-- (from ANY)

	print (some: ANY)
			-- Write terse external representation of `some'
			-- on standard output.
			-- (from ANY)

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of out.
			-- (from ANY)
	
feature -- Platform

	operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
	
feature -- Status Report

	accept_cursor: EV_POINTER_STYLE
			-- Accept cursor set by user.
			-- To be displayed when the screen pointer is over a target that accepts
			-- pebble during pick and drop.
			-- (from EV_MODEL)

	are_events_sended_to_group: BOOLEAN
			-- Are events for pointer_motion_actions, pointer_button_press_actions,
			-- pointer_double_press_actions,  pointer_button_release_actions
			-- pointer_enter_actions and pointer_leave_actions send to `Current's
			-- group (if any) even if `Current' catch the event. (Default True).
			-- (from EV_MODEL)

	deny_cursor: EV_POINTER_STYLE
			-- Deny cursor set by user.
			-- To be displayed when the screen pointer is not over a valid target.
			-- (from EV_MODEL)

	has_capture: BOOLEAN
			-- Are all events sent to `Current'?
			-- (from EV_MODEL)

	is_center_valid: BOOLEAN
			-- Is the position of the center valid?
			-- (from EV_MODEL)

	is_in_group: BOOLEAN
			-- Is `Current' part of a group?
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			group_defines_is_in_group: Result = (group /= Void)

	is_in_world: BOOLEAN
			-- Is `Current' part of a world?
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			world_defines_is_in_world: Result = (world /= Void)

	is_sensitive: BOOLEAN
			-- Is object sensitive to user input?
			-- (from EV_MODEL)

	is_show_requested: BOOLEAN
			-- Will `Current' be displayed when its parent is?
			-- (from EV_MODEL)
	
feature -- Status settings

	disable_capture
			-- Disable grab of all events on world.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			in_world: world /= Void
			has_capture: has_capture
		ensure -- from EV_MODEL
			capture_released: not has_capture

	disable_events_sended_to_group
			-- Set are_events_sended_to_group to False.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			events_blocked: not are_events_sended_to_group

	disable_sensitive
			-- Make object non-sensitive to user input.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			insensitive_requested: not internal_is_sensitive

	enable_capture
			-- Grab all mouse events for world.
			-- (from EV_MODEL)
		require -- from EV_MODEL
			in_world: world /= Void
		ensure -- from EV_MODEL
			capture_set: has_capture

	enable_events_sended_to_group
			-- Set are_events_sended_to_group to True.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			events_sended_to_group: are_events_sended_to_group

	enable_sensitive
			-- Make object sensitive to user input.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			sensitive_requested: internal_is_sensitive

	hide
			-- Request that `Current' not be displayed even when its group is.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			not_is_show_requested: not is_show_requested

	show
			-- Request that `Current' be displayed when its group is.
			-- `True' by default.
			-- (from EV_MODEL)
		ensure -- from EV_MODEL
			is_show_requested: is_show_requested
	
feature --EV_FIGURE -- Status settings

	center_invalidate
			-- The position of the center may have changed.
			-- (from EV_MODEL)
	
invariant
		-- from EV_MODEL_ATOMIC
	foreground_color_exists: foreground_color /= Void
	line_width_non_negative: line_width >= 0

		-- from EV_MODEL
	point_array_exists: point_array /= Void
	center_exists: center /= Void
	x_is_center_x: x = center.x
	y_is_center_y: y = center.y
	all_points_exist: all_points_exist (point_array)
	projection_matrix_not_void: projection_matrix /= Void
	is_transfomable_implies_rotatable_and_scalable: is_transformable implies (is_rotatable and is_scalable)

		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

indexing
	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_MODEL_RECTANGLE