indexing
description: "Abstraction for objects whos position can be set."
legal: "See notice at end of class."
status: "See notice at end of class."
keywords: "position, width, height"
date: "$Date: 2006-01-22 18:25:44 -0800 (Sun, 22 Jan 2006) $"
revision: "$Revision: 56675 $"
deferred class interface
EV_POSITIONABLE
feature
data: ANY
EV_ANY
generating_type: STRING_8
ANY
generator: STRING_8
ANY
feature
frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
`some'`other'
ANY
ensure 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
`some'`other'
ANY
ensure 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
`other'
ANY
require ANY
other_not_void: other /= Void
ensure 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
`some'`other'
ANY
ensure 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
`other'
ANY
require ANY
other_not_void: other /= Void
ensure ANY
same_type: Result implies same_type (other)
symmetric: Result implies other.standard_is_equal (Current)
feature
conforms_to (other: ANY): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
same_type (other: ANY): BOOLEAN
`other'
ANY
require ANY
other_not_void: other /= Void
ensure ANY
definition: Result = (conforms_to (other) and other.conforms_to (Current))
feature
set_height (a_height: INTEGER_32)
`a_height'height
require
not_destroyed: not is_destroyed
a_height_positive_or_zero: a_height >= 0
ensure
height_assigned: height = minimum_height or else height = a_height
set_position (a_x, a_y: INTEGER_32)
`a_x'x_position`a_y'y_position
require
not_destroyed: not is_destroyed
ensure
x_position_assigned: x_position = a_x
y_position_assigned: y_position = a_y
set_size (a_width, a_height: INTEGER_32)
`a_width'width`a_height'height
require
not_destroyed: not is_destroyed
a_width_positive_or_zero: a_width >= 0
a_height_positive_or_zero: a_height >= 0
ensure
width_assigned: width = minimum_width or else width = a_width
height_assigned: height = minimum_height or else height = a_height
set_width (a_width: INTEGER_32)
`a_width'width
require
not_destroyed: not is_destroyed
a_width_positive_or_zero: a_width >= 0
ensure
width_assigned: width = minimum_width or else width = a_width
set_x_position (a_x: INTEGER_32)
`a_x'x_position
require
not_destroyed: not is_destroyed
ensure
x_position_assigned: x_position = a_x
set_y_position (a_y: INTEGER_32)
`a_y'y_position
require
not_destroyed: not is_destroyed
ensure
y_position_assigned: y_position = a_y
feature
set_data (some_data: like data)
`some_data'data
EV_ANY
require EV_ANY
not_destroyed: not is_destroyed
ensure EV_ANY
data_assigned: data = some_data
feature
copy (other: like Current)
`other'
EV_ANY
require ANY
other_not_void: other /= Void
type_identity: same_type (other)
ensure ANY
is_equal: is_equal (other)
frozen deep_copy (other: like Current)
copy`other'deep_twin
ANY
require ANY
other_not_void: other /= Void
ensure ANY
deep_equal: deep_equal (Current, other)
frozen deep_twin: like Current
ANY
ensure ANY
deep_equal: deep_equal (Current, Result)
frozen standard_copy (other: like Current)
`other'
ANY
require ANY
other_not_void: other /= Void
type_identity: same_type (other)
ensure ANY
is_standard_equal: standard_is_equal (other)
frozen standard_twin: like Current
`other'
ANY
ensure ANY
standard_twin_not_void: Result /= Void
equal: standard_equal (Result, Current)
frozen twin: like Current
`Current'
twincopycopy
ANY
ensure ANY
twin_not_void: Result /= Void
is_equal: Result.is_equal (Current)
feature
frozen default: like Current
ANY
frozen default_pointer: POINTER
`POINTER'
`p'default
`p'`POINTER'
ANY
default_rescue
ANY
frozen do_nothing
ANY
feature
destroy
`Current'
EV_ANY
ensure EV_ANY
is_destroyed: is_destroyed
feature
height: INTEGER_32
minimum_height
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.height
minimum_height: INTEGER_32
height
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.minimum_height
positive_or_zero: Result >= 0
minimum_width: INTEGER_32
width
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.minimum_width
positive_or_zero: Result >= 0
width: INTEGER_32
minimum_width
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.width
x_position: INTEGER_32
x_position
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.x_position
y_position: INTEGER_32
y_position
EV_POSITIONED
require EV_POSITIONED
not_destroyed: not is_destroyed
ensure EV_POSITIONED
bridge_ok: Result = implementation.y_position
feature
io: STD_FILES
ANY
out: STRING_8
ANYtagged_out
ANY
print (some: ANY)
`some'
ANY
frozen tagged_out: STRING_8
ANYout
ANY
feature
operating_environment: OPERATING_ENVIRONMENT
ANY
feature
is_destroyed: BOOLEAN
`Current'
EV_ANY
ensure EV_ANY
bridge_ok: Result = implementation.is_destroyed
invariant
EV_POSITIONED
width_not_negative: is_usable implies width >= 0
height_not_negative: is_usable implies height >= 0
minimum_width_not_negative: is_usable implies minimum_width >= 0
minimum_height_not_negative: is_usable implies minimum_height >= 0
EV_ANY
is_initialized: is_initialized
is_coupled: implementation /= Void and then implementation.interface = Current
default_create_called: default_create_called
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 EV_POSITIONABLE