/* * Copyright (c) 1981 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the University of California, Berkeley. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char sccsid[] = "@(#)toucholap.c 5.3 (Berkeley) 6/30/88"; #endif /* not lint */ # include "curses.ext" # define min(a,b) (a < b ? a : b) # define max(a,b) (a > b ? a : b) /* * Touch, on win2, the part that overlaps with win1. * */ touchoverlap(win1, win2) reg WINDOW *win1, *win2; { reg int x, y, endy, endx, starty, startx; # ifdef DEBUG fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2); # endif starty = max(win1->_begy, win2->_begy); startx = max(win1->_begx, win2->_begx); endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); # ifdef DEBUG fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n", win1->_begy, win1->_begx, win1->_begy + win1->_maxy, win1->_begx + win1->_maxx); fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n", win2->_begy, win2->_begx, win2->_begy + win2->_maxy, win2->_begx + win2->_maxx); # endif if (starty >= endy || startx >= endx) return; starty -= win2->_begy; startx -= win2->_begx; endy -= win2->_begy; endx -= win2->_begx; endx--; for (y = starty; y < endy; y++) touchline(win2, y, startx, endx); }