Annotation of gforth/moof-exm.fs, revision 1.2

1.2     ! anton       1: \ mini-oof example
        !             2: 
        !             3: \ Copyright (C) 1998 Free Software Foundation, Inc.
        !             4: 
        !             5: \ This file is part of Gforth.
        !             6: 
        !             7: \ Gforth is free software; you can redistribute it and/or
        !             8: \ modify it under the terms of the GNU General Public License
        !             9: \ as published by the Free Software Foundation; either version 2
        !            10: \ of the License, or (at your option) any later version.
        !            11: 
        !            12: \ This program is distributed in the hope that it will be useful,
        !            13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: \ GNU General Public License for more details.
        !            16: 
        !            17: \ You should have received a copy of the GNU General Public License
        !            18: \ along with this program; if not, write to the Free Software
        !            19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
        !            20: 
1.1       pazsan     21: \ usage:
                     22: 
                     23: object class
                     24:   cell var text
                     25:   cell var len
                     26:   cell var x
                     27:   cell var y
                     28:   method init
                     29:   method draw
                     30: end-class button
                     31: 
                     32: :noname ( o -- ) >r
                     33:  r@ x @ r@ y @ at-xy  r@ text @ r> len @ type ;
                     34:  button defines draw
                     35: :noname ( addr u o -- ) >r
                     36:  0 r@ x ! 0 r@ y ! r@ len ! r> text ! ;
                     37:  button defines init
                     38: 
                     39: \ interitance
                     40: 
                     41: : bold   27 emit ." [1m" ;
                     42: : normal 27 emit ." [0m" ;
                     43: 
                     44: button class end-class bold-button
                     45: :noname bold [ button :: draw ] normal ; bold-button defines draw
                     46: 
                     47: \ Create and draw a button:
                     48: 
                     49: button new Constant foo
                     50: s" thin foo" foo init
                     51: page
                     52: foo draw
                     53: bold-button new Constant bar
                     54: s" fat bar" bar init
                     55: 1 bar y !
                     56: bar draw

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