Commit | Line | Data |
---|---|---|
7c1c9e39 | 1 | #ifndef lint |
04d70db4 | 2 | static char *sccsid = "@(#)wwadd.c 3.7 83/12/02"; |
7c1c9e39 EW |
3 | #endif |
4 | ||
5 | #include "ww.h" | |
6 | ||
7 | /* | |
84ad208b | 8 | * Stick w1 behind w2. |
7c1c9e39 EW |
9 | */ |
10 | wwadd(w1, w2) | |
84ad208b EW |
11 | register struct ww *w1; |
12 | struct ww *w2; | |
7c1c9e39 | 13 | { |
84ad208b | 14 | register i; |
04d70db4 | 15 | register struct ww *w; |
19f9784c | 16 | |
7c1c9e39 EW |
17 | w1->ww_order = w2->ww_order + 1; |
18 | w1->ww_back = w2; | |
19 | w1->ww_forw = w2->ww_forw; | |
20 | w2->ww_forw->ww_back = w1; | |
21 | w2->ww_forw = w1; | |
19f9784c | 22 | |
84ad208b EW |
23 | for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw) |
24 | w->ww_order++; | |
25 | for (i = w1->ww_i.t; i < w1->ww_i.b; i++) { | |
04d70db4 EW |
26 | register j; |
27 | register char *smap = wwsmap[i]; | |
28 | register char *win = w1->ww_win[i]; | |
29 | union ww_char *ns = wwns[i]; | |
30 | union ww_char *buf = w1->ww_buf[i]; | |
84ad208b | 31 | int nvis = 0; |
04d70db4 | 32 | int nchanged = 0; |
7c1c9e39 | 33 | |
84ad208b | 34 | for (j = w1->ww_i.l; j < w1->ww_i.r; j++) { |
04d70db4 EW |
35 | w = wwindex[smap[j]]; |
36 | if (w1->ww_order > w->ww_order) | |
84ad208b | 37 | continue; |
04d70db4 | 38 | if (win[j] & WWM_GLS) |
84ad208b | 39 | continue; |
84ad208b EW |
40 | if (w != &wwnobody && w->ww_win[i][j] == 0) |
41 | w->ww_nvis[i]--; | |
04d70db4 EW |
42 | smap[j] = w1->ww_index; |
43 | if (win[j] == 0) | |
84ad208b | 44 | nvis++; |
04d70db4 EW |
45 | ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT; |
46 | nchanged++; | |
7c1c9e39 | 47 | } |
04d70db4 EW |
48 | if (nchanged > 4) |
49 | wwtouched[i] |= WWU_MAJOR|WWU_TOUCHED; | |
50 | else if (nchanged > 0) | |
51 | wwtouched[i] |= WWU_TOUCHED; | |
84ad208b | 52 | w1->ww_nvis[i] = nvis; |
7c1c9e39 EW |
53 | } |
54 | } |