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Annotation of 43BSDTahoe/usr.lib/libcurses/touchwin.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1981 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)touchwin.c 5.3 (Berkeley) 6/30/88";
                     20: #endif /* not lint */
                     21: 
                     22: # include      "curses.ext"
                     23: 
                     24: /*
                     25:  * make it look like the whole window has been changed.
                     26:  *
                     27:  */
                     28: touchwin(win)
                     29: register WINDOW        *win;
                     30: {
                     31:        register int    y, maxy;
                     32: 
                     33: # ifdef        DEBUG
                     34:        fprintf(outf, "TOUCHWIN(%0.2o)\n", win);
                     35: # endif
                     36:        maxy = win->_maxy;
                     37:        for (y = 0; y < maxy; y++)
                     38:                touchline(win, y, 0, win->_maxx - 1);
                     39: }
                     40: 
                     41: /*
                     42:  * touch a given line
                     43:  */
                     44: touchline(win, y, sx, ex)
                     45: register WINDOW        *win;
                     46: register int   y, sx, ex;
                     47: {
                     48: # ifdef DEBUG
                     49:        fprintf(outf, "TOUCHLINE(%0.2o, %d, %d, %d)\n", win, y, sx, ex);
                     50:        fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
                     51: # endif
                     52:        sx += win->_ch_off;
                     53:        ex += win->_ch_off;
                     54:        if (win->_firstch[y] == _NOCHANGE) {
                     55:                win->_firstch[y] = sx;
                     56:                win->_lastch[y] = ex;
                     57:        }
                     58:        else {
                     59:                if (win->_firstch[y] > sx)
                     60:                        win->_firstch[y] = sx;
                     61:                if (win->_lastch[y] < ex)
                     62:                        win->_lastch[y] = ex;
                     63:        }
                     64: # ifdef        DEBUG
                     65:        fprintf(outf, "TOUCHLINE:first = %d, last = %d\n", win->_firstch[y], win->_lastch[y]);
                     66: # endif
                     67: }

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