1 /* $OpenBSD: win.c,v 1.7 2003/06/03 02:56:23 millert Exp $ */
2 /* $NetBSD: win.c,v 1.8 1996/02/08 21:07:57 mycroft Exp $ */
3
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.
19 * 3. Neither the name of the University nor the names of its contributors
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
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)win.c 8.1 (Berkeley) 6/6/93";
39 #else
40 static char rcsid[] = "$OpenBSD: win.c,v 1.7 2003/06/03 02:56:23 millert Exp $";
41 #endif
42 #endif /* not lint */
43
44 #include "defs.h"
45 #include "char.h"
46 #include <string.h>
47
48 /*
49 * Higher level routines for dealing with windows.
50 *
51 * There are two types of windows: user window, and information window.
52 * User windows are the ones with a pty and shell. Information windows
53 * are for displaying error messages, and other information.
54 *
55 * The windows are doubly linked in overlapping order and divided into
56 * two groups: foreground and normal. Information
57 * windows are always foreground. User windows can be either.
58 * Addwin() adds a window to the list at the top of one of the two groups.
59 * Deletewin() deletes a window. Front() moves a window to the front
60 * of its group. Wwopen(), wwadd(), and wwdelete() should never be called
61 * directly.
62 */
63
64 /*
65 * Open a user window.
66 */
67 struct ww *
openwin(id,row,col,nrow,ncol,nline,label,type,uflags,shf,sh)68 openwin(id, row, col, nrow, ncol, nline, label, type, uflags, shf, sh)
69 char *label;
70 char *shf, **sh;
71 {
72 struct ww *w;
73
74 if (id < 0 && (id = findid()) < 0)
75 return 0;
76 if (row + nrow <= 0 || row > wwnrow - 1
77 || col + ncol <= 0 || col > wwncol - 1) {
78 error("Illegal window position.");
79 return 0;
80 }
81 w = wwopen(type, 0, nrow, ncol, row, col, nline);
82 if (w == 0) {
83 error("Can't open window: %s.", wwerror());
84 return 0;
85 }
86 w->ww_id = id;
87 window[id] = w;
88 CLR(w->ww_uflags, WWU_ALLFLAGS);
89 SET(w->ww_uflags, uflags);
90 w->ww_alt = w->ww_w;
91 if (label != 0 && setlabel(w, label) < 0)
92 error("No memory for label.");
93 wwcursor(w, 1);
94 /*
95 * We have to do this little maneuver to make sure
96 * addwin() puts w at the top, so we don't waste an
97 * insert and delete operation.
98 */
99 setselwin((struct ww *)0);
100 addwin(w, 0);
101 setselwin(w);
102 if (wwspawn(w, shf, sh) < 0) {
103 error("Can't execute %s: %s.", shf, wwerror());
104 closewin(w);
105 return 0;
106 }
107 return w;
108 }
109
findid()110 findid()
111 {
112 int i;
113
114 for (i = 0; i < NWINDOW && window[i] != 0; i++)
115 ;
116 if (i >= NWINDOW) {
117 error("Too many windows.");
118 return -1;
119 }
120 return i;
121 }
122
123 struct ww *
findselwin()124 findselwin()
125 {
126 struct ww *w, *s = 0;
127 int i;
128
129 for (i = 0; i < NWINDOW; i++)
130 if ((w = window[i]) != 0 && w != selwin &&
131 (s == 0 ||
132 !isfg(w) && (w->ww_order < s->ww_order || isfg(s))))
133 s = w;
134 return s;
135 }
136
137 /*
138 * Close a user window. Close all if w == 0.
139 */
140 closewin(w)
141 struct ww *w;
142 {
143 char didit = 0;
144 int i;
145
146 if (w != 0) {
147 closewin1(w);
148 didit++;
149 } else
150 for (i = 0; i < NWINDOW; i++) {
151 if ((w = window[i]) == 0)
152 continue;
153 closewin1(w);
154 didit++;
155 }
156 if (didit) {
157 if (selwin == 0)
158 if (lastselwin != 0) {
159 setselwin(lastselwin);
160 lastselwin = 0;
161 } else if (w = findselwin())
162 setselwin(w);
163 if (lastselwin == 0 && selwin)
164 if (w = findselwin())
165 lastselwin = w;
166 reframe();
167 }
168 }
169
170 /*
171 * Open an information (display) window.
172 */
173 struct ww *
openiwin(nrow,label)174 openiwin(nrow, label)
175 char *label;
176 {
177 struct ww *w;
178
179 if ((w = wwopen(WWT_INTERNAL, 0, nrow, wwncol, 2, 0, 0)) == 0)
180 return 0;
181 SET(w->ww_wflags, WWW_MAPNL | WWW_NOINTR | WWW_NOUPDATE | WWW_UNCTRL);
182 SET(w->ww_uflags, WWU_HASFRAME | WWU_CENTER);
183 w->ww_id = -1;
184 (void) setlabel(w, label);
185 addwin(w, 1);
186 reframe();
187 return w;
188 }
189
190 /*
191 * Close an information window.
192 */
193 closeiwin(w)
194 struct ww *w;
195 {
196 closewin1(w);
197 reframe();
198 }
199
200 closewin1(w)
201 struct ww *w;
202 {
203 if (w == selwin)
204 selwin = 0;
205 if (w == lastselwin)
206 lastselwin = 0;
207 if (w->ww_id >= 0 && w->ww_id < NWINDOW)
208 window[w->ww_id] = 0;
209 if (w->ww_label)
210 str_free(w->ww_label);
211 deletewin(w);
212 wwclose(w);
213 }
214
215 /*
216 * Move the window to the top of its group.
217 * Don't do it if already fully visible.
218 * Wwvisible() doesn't work for tinted windows.
219 * But anything to make it faster.
220 * Always reframe() if doreframe is true.
221 */
222 front(w, doreframe)
223 struct ww *w;
224 char doreframe;
225 {
226 if (w->ww_back != (isfg(w) ? framewin : fgwin) && !wwvisible(w)) {
227 deletewin(w);
228 addwin(w, isfg(w));
229 doreframe = 1;
230 }
231 if (doreframe)
232 reframe();
233 }
234
235 /*
236 * Add a window at the top of normal windows or foreground windows.
237 * For normal windows, we put it behind the current window.
238 */
239 addwin(w, fg)
240 struct ww *w;
241 char fg;
242 {
243 if (fg) {
244 wwadd(w, framewin);
245 if (fgwin == framewin)
246 fgwin = w;
247 } else
248 wwadd(w, selwin != 0 && selwin != w && !isfg(selwin)
249 ? selwin : fgwin);
250 }
251
252 /*
253 * Delete a window.
254 */
255 deletewin(w)
256 struct ww *w;
257 {
258 if (fgwin == w)
259 fgwin = w->ww_back;
260 wwdelete(w);
261 }
262
reframe()263 reframe()
264 {
265 struct ww *w;
266
267 wwunframe(framewin);
268 for (w = wwhead.ww_back; w != &wwhead; w = w->ww_back)
269 if (ISSET(w->ww_uflags, WWU_HASFRAME)) {
270 wwframe(w, framewin);
271 labelwin(w);
272 }
273 }
274
275 labelwin(w)
276 struct ww *w;
277 {
278 int mode = w == selwin ? WWM_REV : 0;
279
280 if (!ISSET(w->ww_uflags, WWU_HASFRAME))
281 return;
282 if (w->ww_id >= 0) {
283 char buf[2];
284
285 buf[0] = w->ww_id + '1';
286 buf[1] = 0;
287 wwlabel(w, framewin, 1, buf, mode);
288 }
289 if (w->ww_label) {
290 int col;
291
292 if (ISSET(w->ww_uflags, WWU_CENTER)) {
293 col = (w->ww_w.nc - strlen(w->ww_label)) / 2;
294 col = MAX(3, col);
295 } else
296 col = 3;
297 wwlabel(w, framewin, col, w->ww_label, mode);
298 }
299 }
300
301 stopwin(w)
302 struct ww *w;
303 {
304 if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && wwstoptty(w->ww_pty) < 0)
305 error("Can't stop output: %s.", wwerror());
306 else
307 SET(w->ww_pflags, WWP_STOPPED);
308 }
309
310 startwin(w)
311 struct ww *w;
312 {
313 if (w->ww_pty >= 0 && w->ww_type == WWT_PTY && wwstarttty(w->ww_pty) < 0)
314 error("Can't start output: %s.", wwerror());
315 else
316 CLR(w->ww_pflags, WWP_STOPPED);
317 }
318
319 sizewin(w, nrow, ncol)
320 struct ww *w;
321 {
322 struct ww *back = w->ww_back;
323
324 w->ww_alt.nr = w->ww_w.nr;
325 w->ww_alt.nc = w->ww_w.nc;
326 wwdelete(w);
327 if (wwsize(w, nrow, ncol) < 0)
328 error("Can't resize window: %s.", wwerror());
329 wwadd(w, back);
330 reframe();
331 }
332
333 waitnl(w)
334 struct ww *w;
335 {
336 (void) waitnl1(w, "[Type any key to continue]");
337 }
338
339 more(w, always)
340 struct ww *w;
341 char always;
342 {
343 int c;
344 int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
345
346 if (!always && w->ww_cur.r < w->ww_w.b - 2)
347 return 0;
348 c = waitnl1(w, "[Type escape to abort, any other key to continue]");
349 CLR(w->ww_wflags, WWW_UNCTRL);
350 wwputs("\033E", w);
351 SET(w->ww_wflags, uc);
352 return c == ctrl('[') ? 2 : 1;
353 }
354
355 waitnl1(w, prompt)
356 struct ww *w;
357 char *prompt;
358 {
359 int uc = ISSET(w->ww_wflags, WWW_UNCTRL);
360
361 CLR(w->ww_wflags, WWW_UNCTRL);
362 front(w, 0);
363 wwprintf(w, "\033Y%c%c\033sA%s\033rA ",
364 w->ww_w.nr - 1 + ' ', ' ', prompt); /* print on last line */
365 wwcurtowin(w);
366 while (wwpeekc() < 0)
367 wwiomux();
368 SET(w->ww_wflags, uc);
369 return wwgetc();
370 }
371