17e21cd3aSarnold # include "curses.ext" 2d6beadb7Sarnold # include <ctype.h> 3d6beadb7Sarnold 4d6beadb7Sarnold # define min(a,b) (a < b ? a : b) 58afdf4adSarnold # define max(a,b) (a > b ? a : b) 6d6beadb7Sarnold 7d6beadb7Sarnold /* 8d6beadb7Sarnold * This routine writes win1 on win2 non-destructively. 9d6beadb7Sarnold * 10*ab193151Sbloom * @(#)overlay.c 1.6 (Berkeley) 05/01/85 11d6beadb7Sarnold */ 12d6beadb7Sarnold overlay(win1, win2) 13d6beadb7Sarnold reg WINDOW *win1, *win2; { 14d6beadb7Sarnold 15d6beadb7Sarnold reg char *sp, *end; 16589b4d0dSarnold reg int x, y, endy, endx, starty, startx; 17d6beadb7Sarnold 18d6beadb7Sarnold # ifdef DEBUG 19d6beadb7Sarnold fprintf(outf, "OVERLAY(%0.2o, %0.2o);\n", win1, win2); 20d6beadb7Sarnold # endif 21*ab193151Sbloom starty = max(win1->_begy, win2->_begy); 22*ab193151Sbloom startx = max(win1->_begx, win2->_begx); 23*ab193151Sbloom endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); 24*ab193151Sbloom endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 25*ab193151Sbloom # ifdef DEBUG 26*ab193151Sbloom fprintf(outf, "OVERLAY:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); 27*ab193151Sbloom # endif 28*ab193151Sbloom if (starty >= endy || startx >= endx) 29*ab193151Sbloom return; 30*ab193151Sbloom x = endx - startx; 31*ab193151Sbloom for (y = starty; y < endy; y++) { 32*ab193151Sbloom bcopy(&win1->_y[y - win1->_begy][startx - win1->_begx], 33*ab193151Sbloom &win2->_y[y - win2->_begy][startx - win2->_begx], x); 34*ab193151Sbloom touchline(win2, y, startx - win2->_begx, endx - win2->_begx); 35*ab193151Sbloom } 36*ab193151Sbloom for (y = starty; y < endy; y++) { 37*ab193151Sbloom end = &win1->_y[y - win1->_begy][endx - win1->_begx]; 38*ab193151Sbloom x = startx - win2->_begx; 39*ab193151Sbloom for (sp = &win1->_y[y][startx - win1->_begx]; sp < end; sp++) { 40*ab193151Sbloom if (!isspace(*sp)) { 41*ab193151Sbloom waddch(win2, y - win2->_begy, x); 42*ab193151Sbloom waddch(win2, *sp); 43*ab193151Sbloom } 44d6beadb7Sarnold x++; 45d6beadb7Sarnold } 46d6beadb7Sarnold } 47d6beadb7Sarnold } 48