File:  [gforth] / gforth / moof-exm.fs
Revision 1.5: download - view: text, annotated - select for diffs
Mon Dec 31 19:02:24 2007 UTC (9 years, 9 months ago) by anton
Branches: MAIN
CVS tags: v0-7-0, HEAD
updated copyright year after changing license notice

\ mini-oof example

\ Copyright (C) 1998,2003,2007 Free Software Foundation, Inc.

\ This file is part of Gforth.

\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation, either version 3
\ of the License, or (at your option) any later version.

\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ GNU General Public License for more details.

\ You should have received a copy of the GNU General Public License
\ along with this program. If not, see

\ usage:

object class
  cell var text
  cell var len
  cell var x
  cell var y
  method init
  method draw
end-class button

:noname ( o -- ) >r
 r@ x @ r@ y @ at-xy  r@ text @ r> len @ type ;
 button defines draw
:noname ( addr u o -- ) >r
 0 r@ x ! 0 r@ y ! r@ len ! r> text ! ;
 button defines init

\ interitance

: bold   27 emit ." [1m" ;
: normal 27 emit ." [0m" ;

button class end-class bold-button
:noname bold [ button :: draw ] normal ; bold-button defines draw

\ Create and draw a button:

button new Constant foo
s" thin foo" foo init
foo draw
bold-button new Constant bar
s" fat bar" bar init
1 bar y !
bar draw

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