overlay.c revision 1.1.1.2
1 1.1 cgd /* 2 1.1.1.2 cgd * Copyright (c) 1981, 1993, 1994 3 1.1.1.2 cgd * The Regents of the University of California. All rights reserved. 4 1.1 cgd * 5 1.1 cgd * Redistribution and use in source and binary forms, with or without 6 1.1 cgd * modification, are permitted provided that the following conditions 7 1.1 cgd * are met: 8 1.1 cgd * 1. Redistributions of source code must retain the above copyright 9 1.1 cgd * notice, this list of conditions and the following disclaimer. 10 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer in the 12 1.1 cgd * documentation and/or other materials provided with the distribution. 13 1.1 cgd * 3. All advertising materials mentioning features or use of this software 14 1.1 cgd * must display the following acknowledgement: 15 1.1 cgd * This product includes software developed by the University of 16 1.1 cgd * California, Berkeley and its contributors. 17 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 18 1.1 cgd * may be used to endorse or promote products derived from this software 19 1.1 cgd * without specific prior written permission. 20 1.1 cgd * 21 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.1 cgd * SUCH DAMAGE. 32 1.1 cgd */ 33 1.1 cgd 34 1.1 cgd #ifndef lint 35 1.1.1.2 cgd static char sccsid[] = "@(#)overlay.c 8.2 (Berkeley) 5/4/94"; 36 1.1.1.2 cgd #endif /* not lint */ 37 1.1 cgd 38 1.1.1.2 cgd #include <ctype.h> 39 1.1 cgd 40 1.1.1.2 cgd #include "curses.h" 41 1.1 cgd 42 1.1 cgd /* 43 1.1.1.2 cgd * overlay -- 44 1.1.1.2 cgd * Writes win1 on win2 non-destructively. 45 1.1 cgd */ 46 1.1.1.2 cgd int 47 1.1 cgd overlay(win1, win2) 48 1.1.1.2 cgd register WINDOW *win1, *win2; 49 1.1.1.2 cgd { 50 1.1.1.2 cgd 51 1.1.1.2 cgd register int x, y, y1, y2, endy, endx, starty, startx; 52 1.1.1.2 cgd register __LDATA *sp, *end; 53 1.1 cgd 54 1.1.1.2 cgd #ifdef DEBUG 55 1.1.1.2 cgd __CTRACE("overlay: (%0.2o, %0.2o);\n", win1, win2); 56 1.1.1.2 cgd #endif 57 1.1.1.2 cgd starty = max(win1->begy, win2->begy); 58 1.1.1.2 cgd startx = max(win1->begx, win2->begx); 59 1.1.1.2 cgd endy = min(win1->maxy + win1->begy, win2->maxy + win2->begx); 60 1.1.1.2 cgd endx = min(win1->maxx + win1->begx, win2->maxx + win2->begx); 61 1.1.1.2 cgd #ifdef DEBUG 62 1.1.1.2 cgd __CTRACE("overlay: from (%d,%d) to (%d,%d)\n", 63 1.1.1.2 cgd starty, startx, endy, endx); 64 1.1.1.2 cgd #endif 65 1.1 cgd if (starty >= endy || startx >= endx) 66 1.1.1.2 cgd return (OK); 67 1.1.1.2 cgd y1 = starty - win1->begy; 68 1.1.1.2 cgd y2 = starty - win2->begy; 69 1.1 cgd for (y = starty; y < endy; y++, y1++, y2++) { 70 1.1.1.2 cgd end = &win1->lines[y1]->line[endx - win1->begx]; 71 1.1.1.2 cgd x = startx - win2->begx; 72 1.1.1.2 cgd for (sp = &win1->lines[y1]->line[startx - win1->begx]; 73 1.1.1.2 cgd sp < end; sp++) { 74 1.1.1.2 cgd if (!isspace(sp->ch)) { 75 1.1.1.2 cgd wmove(win2, y2, x); 76 1.1.1.2 cgd __waddch(win2, sp); 77 1.1.1.2 cgd } 78 1.1 cgd x++; 79 1.1 cgd } 80 1.1 cgd } 81 1.1.1.2 cgd return (OK); 82 1.1 cgd } 83
Indexes created Mon Sep 29 21:09:56 GMT 2025