1 # include "curses.h" 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 * 01/26/81 (Berkeley) @(#)overlay.c 1.1 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, y_top, 17 y_bot, x_left, x_right; 18 19 # ifdef DEBUG 20 fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2); 21 # endif 22 y_top = max(win1->_begy, win2->_begy); 23 y_bot = min(win1->_maxy, win2->_maxy); 24 x_left = max(win1->_begx, win2->_begx); 25 x_right = min(win1->_maxx, win2->_maxx); 26 starty = y_top - win1->_begy; 27 startx = x_left - win1->_begx; 28 endy = y_bot - win1->_begy; 29 endx = x_right - win1->_begx; 30 for (y = starty; y < endy; y++) { 31 end = &win1->_y[y][endx]; 32 x = startx + win1->_begx; 33 for (sp = &win1->_y[y][startx]; sp <= end; sp++) { 34 if (!isspace(*sp)) 35 mvwaddch(win2, y + win1->_begy, x, *sp); 36 x++; 37 } 38 } 39 } 40