1*22678Sdist /* 2*22678Sdist * Copyright (c) 1980 Regents of the University of California. 3*22678Sdist * All rights reserved. The Berkeley software License Agreement 4*22678Sdist * specifies the terms and conditions for redistribution. 5*22678Sdist */ 6*22678Sdist 7*22678Sdist #ifndef lint 8*22678Sdist static char sccsid[] = "@(#)overwrite.c 5.1 (Berkeley) 06/07/85"; 9*22678Sdist #endif not lint 10*22678Sdist 115866Sarnold # include "curses.ext" 1219890Sbloom # include <ctype.h> 132259Sarnold 142259Sarnold # define min(a,b) (a < b ? a : b) 1519890Sbloom # define max(a,b) (a > b ? a : b) 162259Sarnold 172259Sarnold /* 182259Sarnold * This routine writes win1 on win2 destructively. 192259Sarnold * 202259Sarnold */ 212259Sarnold overwrite(win1, win2) 222259Sarnold reg WINDOW *win1, *win2; { 232259Sarnold 2419890Sbloom reg char *sp, *end; 2519890Sbloom reg int x, y, endy, endx, starty, startx; 262259Sarnold 272259Sarnold # ifdef DEBUG 2819890Sbloom fprintf(outf, "OVERWRITE(%0.2o, %0.2o);\n", win1, win2); 292259Sarnold # endif 3019890Sbloom starty = max(win1->_begy, win2->_begy); 3119890Sbloom startx = max(win1->_begx, win2->_begx); 3219890Sbloom endy = min(win1->_maxy + win1->_begy, win2->_maxy + win2->_begx); 3319890Sbloom endx = min(win1->_maxx + win1->_begx, win2->_maxx + win2->_begx); 3419890Sbloom if (starty >= endy || startx >= endx) 3519890Sbloom return; 362259Sarnold # ifdef DEBUG 3719890Sbloom fprintf(outf, "OVERWRITE:from (%d,%d) to (%d,%d)\n", starty, startx, endy, endx); 382259Sarnold # endif 3919890Sbloom x = endx - startx; 4019890Sbloom for (y = starty; y < endy; y++) { 4119890Sbloom bcopy(&win1->_y[y - win1->_begy][startx - win1->_begx], 4219890Sbloom &win2->_y[y - win2->_begy][startx - win2->_begx], x); 4319890Sbloom touchline(win2, y, startx - win2->_begx, endx - win2->_begx); 4419890Sbloom } 452259Sarnold } 46