1 /* 2 * Copyright (c) 1980 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7 #ifndef lint 8 static char sccsid[] = "@(#)toucholap.c 5.1 (Berkeley) 06/07/85"; 9 #endif not lint 10 11 # include "curses.ext" 12 13 # define min(a,b) (a < b ? a : b) 14 # define max(a,b) (a > b ? a : b) 15 16 /* 17 * Touch, on win2, the part that overlaps with win1. 18 * 19 */ 20 touchoverlap(win1, win2) 21 reg WINDOW *win1, *win2; { 22 23 reg int x, y, endy, endx, starty, startx; 24 25 # ifdef DEBUG 26 fprintf(outf, "TOUCHOVERLAP(%0.2o, %0.2o);\n", win1, win2); 27 # endif 28 starty = max(win1->_begy, win2->_begy); 29 startx = max(win1->_begx, win2->_begx); 30 endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); 31 endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 32 # ifdef DEBUG 33 fprintf(outf, "TOUCHOVERLAP:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); 34 fprintf(outf, "TOUCHOVERLAP:win1 (%d,%d) to (%d,%d)\n", win1->_begy, win1->_begx, win1->_begy + win1->_maxy, win1->_begx + win1->_maxx); 35 fprintf(outf, "TOUCHOVERLAP:win2 (%d,%d) to (%d,%d)\n", win2->_begy, win2->_begx, win2->_begy + win2->_maxy, win2->_begx + win2->_maxx); 36 # endif 37 if (starty >= endy || startx >= endx) 38 return; 39 starty -= win2->_begy; 40 startx -= win2->_begx; 41 endy -= win2->_begy; 42 endx -= win2->_begx; 43 endx--; 44 for (y = starty; y < endy; y++) 45 touchline(win2, y, startx, endx); 46 } 47