deferred class interface DECORATION
feature(s) from STATE_CONSTANTS
state_normal: INTEGER
state_active: INTEGER
state_prelight: INTEGER
state_selected: INTEGER
state_insensitive: INTEGER
feature(s) from STATE
state: INTEGER
-- use values from STATE_CONSTANTS
is_state_normal: BOOLEAN
is_state_active: BOOLEAN
is_state_prelight: BOOLEAN
is_state_selected: BOOLEAN
is_state_insensitive: BOOLEAN
feature(s) from STATE
set_state_normal
set_state_active
set_state_prelight
set_state_selected
set_state_insensitive
set_state (n: INTEGER)
renderer: RENDERER
feature(s) from WIDGET
parent: CONTAINER
pos_x: INTEGER
pos_y: INTEGER
x_shrink_allowed: BOOLEAN
x_expand_allowed: BOOLEAN
y_shrink_allowed: BOOLEAN
y_expand_allowed: BOOLEAN
min_width: INTEGER
min_height: INTEGER
std_width: INTEGER
std_height: INTEGER
width: INTEGER
height: INTEGER
valid_width (w: INTEGER): BOOLEAN
valid_height (h: INTEGER): BOOLEAN
area: RECT
root_area: RECT
computing_size: BOOLEAN
set_x_shrink (b: BOOLEAN)
set_x_expand (b: BOOLEAN)
set_y_shrink (b: BOOLEAN)
set_y_expand (b: BOOLEAN)
set_shrink (b: BOOLEAN)
-- change both x and y shrink state
set_expand (b: BOOLEAN)
-- change both x and y expand state
feature(s) from WIDGET
expose_paint
-- expose_paint paint with depth limited to the first window
-- Containers have to propagate, with special
-- attention to windows where expose_paint do nothing.
set_geometry (x, y, w, h: INTEGER)
require
x >= 0;
y >= 0;
w >= min_width;
h >= min_height
ensure
width = w;
height = h
feature(s) from WIDGET
set_parent (p: CONTAINER)
require
p = Void implies parent /= Void;
p /= Void implies parent = Void;
p /= Void implies p.has_child(Current)
ensure
parent = p
feature(s) from WIDGET
resize (w, h: INTEGER)
require
w >= min_width;
h >= min_height
ensure
width = w;
height = h
feature(s) from DECORATION
set_widget (w: POINTER)
widget: POINTER
max_width: INTEGER
max_height: INTEGER
invariant
width >= min_width or computing_size;
height >= min_height or computing_size;
std_width > 0;
std_height > 0;
(not x_shrink_allowed implies width >= std_width) or computing_size;
(not x_expand_allowed implies width <= std_width) or computing_size;
(not y_shrink_allowed implies height >= std_height) or computing_size;
(not y_expand_allowed implies height <= std_height) or computing_size;
end of deferred DECORATION