1 # include "curses.ext" 2 # include <ctype.h> 3 4 # define min(a,b) (a < b ? a : b) 5 # define max(a,b) (a > b ? a : b) 6 7 /* 8 * This routine writes win1 on win2 non-destructively. 9 * 10 * 11/05/82 (Berkeley) @(#)overlay.c 1.4 11 */ 12 overlay(win1, win2) 13 reg WINDOW *win1, *win2; { 14 15 reg char *sp, *end; 16 reg int x, y, endy, endx, starty, startx; 17 18 # ifdef DEBUG 19 fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2); 20 # endif 21 starty = max(win1->_begy, win2->_begy) - win1->_begy; 22 startx = max(win1->_begx, win2->_begx) - win1->_begx; 23 endy = min(win1->_maxy, win2->_maxy) - win1->_begy - 1; 24 endx = min(win1->_maxx, win2->_maxx) - win1->_begx - 1; 25 for (y = starty; y < endy; y++) { 26 end = &win1->_y[y][endx]; 27 x = startx + win1->_begx; 28 for (sp = &win1->_y[y][startx]; sp <= end; sp++) { 29 if (!isspace(*sp)) 30 mvwaddch(win2, y + win1->_begy, x, *sp); 31 x++; 32 } 33 } 34 } 35