projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 2c872e05 | 1 | /* @(#)wwadd.c 8.1 (Berkeley) 6/6/93 */ |
| abecab39 SW |
2 | /* $NetBSD: wwadd.c,v 1.7 2003/08/07 11:17:35 agc Exp $ */ |
| 3 | ||
| 984263bc MD |
4 | /* |
| 5 | * Copyright (c) 1983, 1993 | |
| 6 | * The Regents of the University of California. All rights reserved. | |
| 7 | * | |
| 8 | * This code is derived from software contributed to Berkeley by | |
| 9 | * Edward Wang at The University of California, Berkeley. | |
| 10 | * | |
| 11 | * Redistribution and use in source and binary forms, with or without | |
| 12 | * modification, are permitted provided that the following conditions | |
| 13 | * are met: | |
| 14 | * 1. Redistributions of source code must retain the above copyright | |
| 15 | * notice, this list of conditions and the following disclaimer. | |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 17 | * notice, this list of conditions and the following disclaimer in the | |
| 18 | * documentation and/or other materials provided with the distribution. | |
| abecab39 | 19 | * 3. Neither the name of the University nor the names of its contributors |
| 984263bc MD |
20 | * may be used to endorse or promote products derived from this software |
| 21 | * without specific prior written permission. | |
| 22 | * | |
| 23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 33 | * SUCH DAMAGE. | |
| 34 | */ | |
| 35 | ||
| 984263bc MD |
36 | #include "ww.h" |
| 37 | ||
| 38 | /* | |
| 39 | * Stick w1 behind w2. | |
| 40 | */ | |
| abecab39 SW |
41 | void |
| 42 | wwadd(struct ww *w1, struct ww *w2) | |
| 984263bc | 43 | { |
| abecab39 SW |
44 | int i; |
| 45 | struct ww *w; | |
| 984263bc MD |
46 | |
| 47 | w1->ww_order = w2->ww_order + 1; | |
| 48 | w1->ww_back = w2; | |
| 49 | w1->ww_forw = w2->ww_forw; | |
| 50 | w2->ww_forw->ww_back = w1; | |
| 51 | w2->ww_forw = w1; | |
| 52 | ||
| 53 | for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw) | |
| 54 | w->ww_order++; | |
| 55 | for (i = w1->ww_i.t; i < w1->ww_i.b; i++) { | |
| abecab39 SW |
56 | int j; |
| 57 | unsigned char *smap = wwsmap[i]; | |
| 58 | char *win = w1->ww_win[i]; | |
| 984263bc MD |
59 | union ww_char *ns = wwns[i]; |
| 60 | union ww_char *buf = w1->ww_buf[i]; | |
| 61 | int nvis = 0; | |
| 62 | int nchanged = 0; | |
| 63 | ||
| 64 | for (j = w1->ww_i.l; j < w1->ww_i.r; j++) { | |
| 65 | w = wwindex[smap[j]]; | |
| 66 | if (w1->ww_order > w->ww_order) | |
| 67 | continue; | |
| 68 | if (win[j] & WWM_GLS) | |
| 69 | continue; | |
| 70 | if (w != &wwnobody && w->ww_win[i][j] == 0) | |
| 71 | w->ww_nvis[i]--; | |
| 72 | smap[j] = w1->ww_index; | |
| 73 | if (win[j] == 0) | |
| 74 | nvis++; | |
| 75 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; | |
| 76 | nchanged++; | |
| 77 | } | |
| 78 | if (nchanged > 0) | |
| 79 | wwtouched[i] |= WWU_TOUCHED; | |
| 80 | w1->ww_nvis[i] = nvis; | |
| 81 | } | |
| 82 | } |