Annotation of src/usr.bin/tmux/window.c, Revision 1.63
1.63 ! nicm 1: /* $OpenBSD: window.c,v 1.62 2011/01/08 01:52:37 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20: #include <sys/ioctl.h>
21:
22: #include <errno.h>
23: #include <fcntl.h>
1.5 nicm 24: #include <fnmatch.h>
1.1 nicm 25: #include <paths.h>
1.8 nicm 26: #include <pwd.h>
1.1 nicm 27: #include <signal.h>
28: #include <stdint.h>
29: #include <stdlib.h>
30: #include <string.h>
31: #include <termios.h>
32: #include <unistd.h>
33: #include <util.h>
34:
35: #include "tmux.h"
36:
37: /*
1.14 nicm 38: * Each window is attached to a number of panes, each of which is a pty. This
1.1 nicm 39: * file contains code to handle them.
40: *
41: * A pane has two buffers attached, these are filled and emptied by the main
42: * server poll loop. Output data is received from pty's in screen format,
43: * translated and returned as a series of escape sequences and strings via
44: * input_parse (in input.c). Input data is received as key codes and written
45: * directly via input_key.
46: *
47: * Each pane also has a "virtual" screen (screen.c) which contains the current
48: * state and is redisplayed when the window is reattached to a client.
49: *
50: * Windows are stored directly on a global array and wrapped in any number of
51: * winlink structs to be linked onto local session RB trees. A reference count
52: * is maintained and a window removed from the global list and destroyed when
53: * it reaches zero.
54: */
55:
56: /* Global window list. */
57: struct windows windows;
58:
1.37 nicm 59: void window_pane_read_callback(struct bufferevent *, void *);
60: void window_pane_error_callback(struct bufferevent *, short, void *);
61:
1.1 nicm 62: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
63:
64: int
65: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
66: {
67: return (wl1->idx - wl2->idx);
1.12 nicm 68: }
69:
70: struct winlink *
71: winlink_find_by_window(struct winlinks *wwl, struct window *w)
72: {
73: struct winlink *wl;
74:
75: RB_FOREACH(wl, winlinks, wwl) {
76: if (wl->window == w)
77: return (wl);
78: }
79:
80: return (NULL);
1.1 nicm 81: }
82:
83: struct winlink *
84: winlink_find_by_index(struct winlinks *wwl, int idx)
85: {
86: struct winlink wl;
87:
88: if (idx < 0)
89: fatalx("bad index");
90:
91: wl.idx = idx;
92: return (RB_FIND(winlinks, wwl, &wl));
93: }
94:
95: int
1.22 nicm 96: winlink_next_index(struct winlinks *wwl, int idx)
1.1 nicm 97: {
1.22 nicm 98: int i;
1.1 nicm 99:
1.22 nicm 100: i = idx;
101: do {
1.1 nicm 102: if (winlink_find_by_index(wwl, i) == NULL)
103: return (i);
1.22 nicm 104: if (i == INT_MAX)
105: i = 0;
106: else
107: i++;
108: } while (i != idx);
109: return (-1);
1.1 nicm 110: }
111:
112: u_int
113: winlink_count(struct winlinks *wwl)
114: {
115: struct winlink *wl;
116: u_int n;
117:
118: n = 0;
119: RB_FOREACH(wl, winlinks, wwl)
120: n++;
121:
122: return (n);
123: }
124:
125: struct winlink *
1.63 ! nicm 126: winlink_add(struct winlinks *wwl, int idx)
1.1 nicm 127: {
128: struct winlink *wl;
129:
1.22 nicm 130: if (idx < 0) {
131: if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
132: return (NULL);
133: } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1 nicm 134: return (NULL);
135:
136: wl = xcalloc(1, sizeof *wl);
137: wl->idx = idx;
138: RB_INSERT(winlinks, wwl, wl);
139:
1.63 ! nicm 140: return (wl);
! 141: }
! 142:
! 143: void
! 144: winlink_set_window(struct winlink *wl, struct window *w)
! 145: {
! 146: wl->window = w;
1.1 nicm 147: w->references++;
148: }
149:
150: void
151: winlink_remove(struct winlinks *wwl, struct winlink *wl)
152: {
153: struct window *w = wl->window;
154:
155: RB_REMOVE(winlinks, wwl, wl);
1.40 nicm 156: if (wl->status_text != NULL)
157: xfree(wl->status_text);
1.1 nicm 158: xfree(wl);
159:
1.63 ! nicm 160: if (w != NULL) {
! 161: if (w->references == 0)
! 162: fatal("bad reference count");
! 163: w->references--;
! 164: if (w->references == 0)
! 165: window_destroy(w);
! 166: }
1.1 nicm 167: }
168:
169: struct winlink *
1.41 nicm 170: winlink_next(struct winlink *wl)
1.1 nicm 171: {
172: return (RB_NEXT(winlinks, wwl, wl));
173: }
174:
175: struct winlink *
1.41 nicm 176: winlink_previous(struct winlink *wl)
1.1 nicm 177: {
178: return (RB_PREV(winlinks, wwl, wl));
1.52 nicm 179: }
180:
181: struct winlink *
1.53 nicm 182: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 183: {
184: for (; n > 0; n--) {
185: if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53 nicm 186: wl = RB_MIN(winlinks, &s->windows);
1.52 nicm 187: }
188:
189: return (wl);
190: }
191:
192: struct winlink *
1.53 nicm 193: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 194: {
195: for (; n > 0; n--) {
196: if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53 nicm 197: wl = RB_MAX(winlinks, &s->windows);
1.52 nicm 198: }
199:
200: return (wl);
1.1 nicm 201: }
202:
203: void
204: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
205: {
206: if (wl == NULL)
207: return;
208:
209: winlink_stack_remove(stack, wl);
1.28 nicm 210: TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1 nicm 211: }
212:
213: void
214: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
215: {
216: struct winlink *wl2;
217:
218: if (wl == NULL)
219: return;
1.42 nicm 220:
1.28 nicm 221: TAILQ_FOREACH(wl2, stack, sentry) {
1.1 nicm 222: if (wl2 == wl) {
1.28 nicm 223: TAILQ_REMOVE(stack, wl, sentry);
1.1 nicm 224: return;
225: }
226: }
227: }
228:
229: int
230: window_index(struct window *s, u_int *i)
231: {
232: for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
233: if (s == ARRAY_ITEM(&windows, *i))
234: return (0);
235: }
236: return (-1);
237: }
238:
239: struct window *
240: window_create1(u_int sx, u_int sy)
241: {
242: struct window *w;
243: u_int i;
244:
1.38 nicm 245: w = xcalloc(1, sizeof *w);
1.1 nicm 246: w->name = NULL;
247: w->flags = 0;
248:
249: TAILQ_INIT(&w->panes);
250: w->active = NULL;
1.14 nicm 251:
1.17 nicm 252: w->lastlayout = -1;
1.14 nicm 253: w->layout_root = NULL;
1.42 nicm 254:
1.1 nicm 255: w->sx = sx;
256: w->sy = sy;
257:
1.38 nicm 258: queue_window_name(w);
259:
1.7 nicm 260: options_init(&w->options, &global_w_options);
1.1 nicm 261:
262: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
263: if (ARRAY_ITEM(&windows, i) == NULL) {
264: ARRAY_SET(&windows, i, w);
265: break;
266: }
267: }
268: if (i == ARRAY_LENGTH(&windows))
269: ARRAY_ADD(&windows, w);
270: w->references = 0;
271:
272: return (w);
273: }
274:
275: struct window *
1.23 nicm 276: window_create(const char *name, const char *cmd, const char *shell,
277: const char *cwd, struct environ *env, struct termios *tio,
278: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 279: {
1.14 nicm 280: struct window *w;
281: struct window_pane *wp;
1.1 nicm 282:
283: w = window_create1(sx, sy);
1.16 nicm 284: wp = window_add_pane(w, hlimit);
1.14 nicm 285: layout_init(w);
1.23 nicm 286: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 287: window_destroy(w);
288: return (NULL);
289: }
290: w->active = TAILQ_FIRST(&w->panes);
291: if (name != NULL) {
292: w->name = xstrdup(name);
293: options_set_number(&w->options, "automatic-rename", 0);
294: } else
295: w->name = default_window_name(w);
296: return (w);
297: }
298:
299: void
300: window_destroy(struct window *w)
301: {
302: u_int i;
303:
304: if (window_index(w, &i) != 0)
305: fatalx("index not found");
306: ARRAY_SET(&windows, i, NULL);
307: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
308: ARRAY_TRUNC(&windows, 1);
309:
1.14 nicm 310: if (w->layout_root != NULL)
311: layout_free(w);
312:
1.38 nicm 313: evtimer_del(&w->name_timer);
314:
1.1 nicm 315: options_free(&w->options);
316:
317: window_destroy_panes(w);
318:
319: if (w->name != NULL)
320: xfree(w->name);
321: xfree(w);
322: }
323:
1.15 nicm 324: void
1.1 nicm 325: window_resize(struct window *w, u_int sx, u_int sy)
326: {
327: w->sx = sx;
328: w->sy = sy;
329: }
330:
331: void
332: window_set_active_pane(struct window *w, struct window_pane *wp)
333: {
1.59 nicm 334: if (wp == w->active)
335: return;
1.58 nicm 336: w->last = w->active;
1.1 nicm 337: w->active = wp;
1.10 nicm 338: while (!window_pane_visible(w->active)) {
1.1 nicm 339: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 340: if (w->active == NULL)
341: w->active = TAILQ_LAST(&w->panes, window_panes);
342: if (w->active == wp)
343: return;
1.29 nicm 344: }
345: }
346:
347: void
348: window_set_active_at(struct window *w, u_int x, u_int y)
349: {
350: struct window_pane *wp;
351:
352: TAILQ_FOREACH(wp, &w->panes, entry) {
1.59 nicm 353: if (wp == w->active || !window_pane_visible(wp))
1.29 nicm 354: continue;
355: if (x < wp->xoff || x >= wp->xoff + wp->sx)
356: continue;
357: if (y < wp->yoff || y >= wp->yoff + wp->sy)
358: continue;
359: window_set_active_pane(w, wp);
360: break;
1.10 nicm 361: }
1.1 nicm 362: }
363:
364: struct window_pane *
1.16 nicm 365: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 366: {
367: struct window_pane *wp;
368:
1.14 nicm 369: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 370: if (TAILQ_EMPTY(&w->panes))
371: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
372: else
373: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
374: return (wp);
375: }
376:
377: void
378: window_remove_pane(struct window *w, struct window_pane *wp)
379: {
1.57 nicm 380: if (wp == w->active) {
1.58 nicm 381: w->active = w->last;
382: w->last = NULL;
383: if (w->active == NULL) {
384: w->active = TAILQ_PREV(wp, window_panes, entry);
385: if (w->active == NULL)
386: w->active = TAILQ_NEXT(wp, entry);
387: }
388: } else if (wp == w->last)
389: w->last = NULL;
1.1 nicm 390:
391: TAILQ_REMOVE(&w->panes, wp, entry);
392: window_pane_destroy(wp);
393: }
394:
395: struct window_pane *
396: window_pane_at_index(struct window *w, u_int idx)
397: {
398: struct window_pane *wp;
399: u_int n;
400:
401: n = 0;
402: TAILQ_FOREACH(wp, &w->panes, entry) {
403: if (n == idx)
404: return (wp);
405: n++;
406: }
407: return (NULL);
1.53 nicm 408: }
409:
410: struct window_pane *
411: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
412: {
413: for (; n > 0; n--) {
414: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
415: wp = TAILQ_FIRST(&w->panes);
416: }
417:
418: return (wp);
419: }
420:
421: struct window_pane *
422: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
423: u_int n)
424: {
425: for (; n > 0; n--) {
426: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
427: wp = TAILQ_LAST(&w->panes, window_panes);
428: }
429:
430: return (wp);
1.13 nicm 431: }
432:
433: u_int
434: window_pane_index(struct window *w, struct window_pane *wp)
435: {
436: struct window_pane *wq;
437: u_int n;
438:
439: n = 0;
440: TAILQ_FOREACH(wq, &w->panes, entry) {
441: if (wp == wq)
442: break;
443: n++;
444: }
445: return (n);
1.1 nicm 446: }
447:
448: u_int
449: window_count_panes(struct window *w)
450: {
451: struct window_pane *wp;
452: u_int n;
453:
454: n = 0;
455: TAILQ_FOREACH(wp, &w->panes, entry)
456: n++;
457: return (n);
458: }
459:
460: void
461: window_destroy_panes(struct window *w)
462: {
463: struct window_pane *wp;
464:
465: while (!TAILQ_EMPTY(&w->panes)) {
466: wp = TAILQ_FIRST(&w->panes);
467: TAILQ_REMOVE(&w->panes, wp, entry);
468: window_pane_destroy(wp);
469: }
1.61 nicm 470: }
471:
472: /* Return list of printable window flag symbols. No flags is just a space. */
473: char *
474: window_printable_flags(struct session *s, struct winlink *wl)
475: {
476: char flags[BUFSIZ];
477: int pos;
478:
479: pos = 0;
480: if (wl->flags & WINLINK_ACTIVITY)
481: flags[pos++] = '#';
482: if (wl->flags & WINLINK_BELL)
483: flags[pos++] = '!';
484: if (wl->flags & WINLINK_CONTENT)
485: flags[pos++] = '+';
486: if (wl->flags & WINLINK_SILENCE)
487: flags[pos++] = '~';
488: if (wl == s->curw)
489: flags[pos++] = '*';
490: if (wl == TAILQ_FIRST(&s->lastw))
491: flags[pos++] = '-';
492: if (pos == 0)
493: flags[pos++] = ' ';
494: flags[pos] = '\0';
495: return (xstrdup(flags));
1.1 nicm 496: }
497:
498: struct window_pane *
499: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
500: {
501: struct window_pane *wp;
502:
503: wp = xcalloc(1, sizeof *wp);
504: wp->window = w;
505:
506: wp->cmd = NULL;
1.23 nicm 507: wp->shell = NULL;
1.1 nicm 508: wp->cwd = NULL;
509:
510: wp->fd = -1;
1.37 nicm 511: wp->event = NULL;
1.1 nicm 512:
513: wp->mode = NULL;
1.14 nicm 514:
515: wp->layout_cell = NULL;
1.1 nicm 516:
517: wp->xoff = 0;
1.42 nicm 518: wp->yoff = 0;
1.1 nicm 519:
520: wp->sx = sx;
521: wp->sy = sy;
522:
1.32 nicm 523: wp->pipe_fd = -1;
524: wp->pipe_off = 0;
1.36 nicm 525: wp->pipe_event = NULL;
1.32 nicm 526:
1.9 nicm 527: wp->saved_grid = NULL;
528:
1.1 nicm 529: screen_init(&wp->base, sx, sy, hlimit);
530: wp->screen = &wp->base;
531:
532: input_init(wp);
533:
534: return (wp);
535: }
536:
537: void
538: window_pane_destroy(struct window_pane *wp)
539: {
1.55 nicm 540: window_pane_reset_mode(wp);
541:
1.37 nicm 542: if (wp->fd != -1) {
1.1 nicm 543: close(wp->fd);
1.37 nicm 544: bufferevent_free(wp->event);
545: }
1.1 nicm 546:
547: input_free(wp);
548:
549: screen_free(&wp->base);
1.9 nicm 550: if (wp->saved_grid != NULL)
551: grid_destroy(wp->saved_grid);
1.1 nicm 552:
1.32 nicm 553: if (wp->pipe_fd != -1) {
554: close(wp->pipe_fd);
1.36 nicm 555: bufferevent_free(wp->pipe_event);
1.32 nicm 556: }
557:
1.1 nicm 558: if (wp->cwd != NULL)
559: xfree(wp->cwd);
1.23 nicm 560: if (wp->shell != NULL)
561: xfree(wp->shell);
1.1 nicm 562: if (wp->cmd != NULL)
563: xfree(wp->cmd);
564: xfree(wp);
565: }
566:
567: int
1.23 nicm 568: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 569: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 570: {
1.47 nicm 571: struct winsize ws;
572: char *argv0;
573: const char *ptr;
574: struct termios tio2;
1.1 nicm 575:
1.37 nicm 576: if (wp->fd != -1) {
1.1 nicm 577: close(wp->fd);
1.37 nicm 578: bufferevent_free(wp->event);
579: }
1.1 nicm 580: if (cmd != NULL) {
581: if (wp->cmd != NULL)
582: xfree(wp->cmd);
583: wp->cmd = xstrdup(cmd);
584: }
1.23 nicm 585: if (shell != NULL) {
586: if (wp->shell != NULL)
587: xfree(wp->shell);
588: wp->shell = xstrdup(shell);
589: }
1.1 nicm 590: if (cwd != NULL) {
591: if (wp->cwd != NULL)
592: xfree(wp->cwd);
593: wp->cwd = xstrdup(cwd);
594: }
595:
596: memset(&ws, 0, sizeof ws);
597: ws.ws_col = screen_size_x(&wp->base);
598: ws.ws_row = screen_size_y(&wp->base);
599:
1.42 nicm 600: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 601: case -1:
602: wp->fd = -1;
603: xasprintf(cause, "%s: %s", cmd, strerror(errno));
604: return (-1);
605: case 0:
606: if (chdir(wp->cwd) != 0)
607: chdir("/");
1.25 nicm 608:
609: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
610: fatal("tcgetattr failed");
611: if (tio != NULL)
612: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
613: tio2.c_cc[VERASE] = '\177';
614: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
615: fatal("tcgetattr failed");
1.18 nicm 616:
1.56 nicm 617: closefrom(STDERR_FILENO + 1);
618:
1.47 nicm 619: environ_push(env);
1.18 nicm 620:
1.54 nicm 621: clear_signals(1);
1.1 nicm 622: log_close();
623:
1.8 nicm 624: if (*wp->cmd != '\0') {
1.24 nicm 625: /* Set SHELL but only if it is currently not useful. */
626: shell = getenv("SHELL");
627: if (shell == NULL || *shell == '\0' || areshell(shell))
628: setenv("SHELL", wp->shell, 1);
629:
1.8 nicm 630: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
631: fatal("execl failed");
632: }
633:
634: /* No command; fork a login shell. */
1.23 nicm 635: ptr = strrchr(wp->shell, '/');
636: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 637: xasprintf(&argv0, "-%s", ptr + 1);
638: else
1.23 nicm 639: xasprintf(&argv0, "-%s", wp->shell);
1.24 nicm 640: setenv("SHELL", wp->shell, 1);
1.23 nicm 641: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 642: fatal("execl failed");
643: }
644:
1.62 nicm 645: setblocking(wp->fd, 0);
646:
1.37 nicm 647: wp->event = bufferevent_new(wp->fd,
648: window_pane_read_callback, NULL, window_pane_error_callback, wp);
649: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 650:
651: return (0);
652: }
653:
1.41 nicm 654: /* ARGSUSED */
1.15 nicm 655: void
1.37 nicm 656: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
657: {
1.46 nicm 658: struct window_pane *wp = data;
659: char *new_data;
660: size_t new_size;
661:
662: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
663: if (wp->pipe_fd != -1 && new_size > 0) {
664: new_data = EVBUFFER_DATA(wp->event->input);
665: bufferevent_write(wp->pipe_event, new_data, new_size);
666: }
667:
668: input_parse(wp);
1.37 nicm 669:
1.46 nicm 670: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.60 nicm 671:
672: /*
673: * If we get here, we're not outputting anymore, so set the silence
674: * flag on the window.
675: */
676: wp->window->flags |= WINDOW_SILENCE;
677: if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
678: fatal("gettimeofday failed.");
1.37 nicm 679: }
680:
1.41 nicm 681: /* ARGSUSED */
1.37 nicm 682: void
683: window_pane_error_callback(
684: unused struct bufferevent *bufev, unused short what, void *data)
685: {
686: struct window_pane *wp = data;
687:
1.39 nicm 688: server_destroy_pane(wp);
1.37 nicm 689: }
690:
691: void
1.1 nicm 692: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
693: {
694: struct winsize ws;
695:
696: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 697: return;
1.1 nicm 698: wp->sx = sx;
699: wp->sy = sy;
700:
701: memset(&ws, 0, sizeof ws);
702: ws.ws_col = sx;
703: ws.ws_row = sy;
704:
705: screen_resize(&wp->base, sx, sy);
706: if (wp->mode != NULL)
707: wp->mode->resize(wp, sx, sy);
708:
709: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
710: fatal("ioctl failed");
1.44 nicm 711: }
712:
713: /*
714: * Enter alternative screen mode. A copy of the visible screen is saved and the
715: * history is not updated
716: */
717: void
718: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
719: {
720: struct screen *s = &wp->base;
721: u_int sx, sy;
722:
723: if (wp->saved_grid != NULL)
724: return;
725: if (!options_get_number(&wp->window->options, "alternate-screen"))
726: return;
727: sx = screen_size_x(s);
728: sy = screen_size_y(s);
729:
730: wp->saved_grid = grid_create(sx, sy, 0);
731: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
732: wp->saved_cx = s->cx;
733: wp->saved_cy = s->cy;
734: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
735:
736: grid_view_clear(s->grid, 0, 0, sx, sy);
737:
738: wp->base.grid->flags &= ~GRID_HISTORY;
739:
740: wp->flags |= PANE_REDRAW;
741: }
742:
743: /* Exit alternate screen mode and restore the copied grid. */
744: void
745: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
746: {
747: struct screen *s = &wp->base;
748: u_int sx, sy;
749:
750: if (wp->saved_grid == NULL)
751: return;
752: if (!options_get_number(&wp->window->options, "alternate-screen"))
753: return;
754: sx = screen_size_x(s);
755: sy = screen_size_y(s);
756:
757: /*
758: * If the current size is bigger, temporarily resize to the old size
759: * before copying back.
760: */
761: if (sy > wp->saved_grid->sy)
762: screen_resize(s, sx, wp->saved_grid->sy);
763:
764: /* Restore the grid, cursor position and cell. */
765: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
766: s->cx = wp->saved_cx;
767: if (s->cx > screen_size_x(s) - 1)
768: s->cx = screen_size_x(s) - 1;
769: s->cy = wp->saved_cy;
770: if (s->cy > screen_size_y(s) - 1)
771: s->cy = screen_size_y(s) - 1;
772: memcpy(gc, &wp->saved_cell, sizeof *gc);
773:
774: /*
775: * Turn history back on (so resize can use it) and then resize back to
776: * the current size.
777: */
778: wp->base.grid->flags |= GRID_HISTORY;
779: if (sy > wp->saved_grid->sy)
780: screen_resize(s, sx, sy);
781:
782: grid_destroy(wp->saved_grid);
783: wp->saved_grid = NULL;
784:
785: wp->flags |= PANE_REDRAW;
1.1 nicm 786: }
787:
788: int
789: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
790: {
791: struct screen *s;
792:
1.15 nicm 793: if (wp->mode != NULL)
1.1 nicm 794: return (1);
795: wp->mode = mode;
796:
797: if ((s = wp->mode->init(wp)) != NULL)
798: wp->screen = s;
1.34 nicm 799: wp->flags |= PANE_REDRAW;
1.1 nicm 800: return (0);
801: }
802:
803: void
804: window_pane_reset_mode(struct window_pane *wp)
805: {
806: if (wp->mode == NULL)
807: return;
808:
809: wp->mode->free(wp);
810: wp->mode = NULL;
811:
812: wp->screen = &wp->base;
1.34 nicm 813: wp->flags |= PANE_REDRAW;
1.1 nicm 814: }
815:
816: void
1.51 nicm 817: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 818: {
1.27 nicm 819: struct window_pane *wp2;
820:
1.30 nicm 821: if (!window_pane_visible(wp))
1.3 nicm 822: return;
823:
1.1 nicm 824: if (wp->mode != NULL) {
825: if (wp->mode->key != NULL)
1.51 nicm 826: wp->mode->key(wp, sess, key);
1.27 nicm 827: return;
1.30 nicm 828: }
1.27 nicm 829:
1.30 nicm 830: if (wp->fd == -1)
831: return;
1.27 nicm 832: input_key(wp, key);
833: if (options_get_number(&wp->window->options, "synchronize-panes")) {
834: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
835: if (wp2 == wp || wp2->mode != NULL)
836: continue;
837: if (wp2->fd != -1 && window_pane_visible(wp2))
838: input_key(wp2, key);
839: }
840: }
1.1 nicm 841: }
842:
843: void
844: window_pane_mouse(
1.51 nicm 845: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 846: {
1.30 nicm 847: if (!window_pane_visible(wp))
1.3 nicm 848: return;
849:
1.31 nicm 850: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 851: return;
1.31 nicm 852: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 853: return;
1.31 nicm 854: m->x -= wp->xoff;
855: m->y -= wp->yoff;
1.1 nicm 856:
857: if (wp->mode != NULL) {
858: if (wp->mode->mouse != NULL)
1.51 nicm 859: wp->mode->mouse(wp, sess, m);
1.30 nicm 860: } else if (wp->fd != -1)
1.31 nicm 861: input_mouse(wp, m);
1.10 nicm 862: }
863:
864: int
865: window_pane_visible(struct window_pane *wp)
866: {
867: struct window *w = wp->window;
868:
869: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
870: return (0);
871: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
872: return (0);
873: return (1);
1.1 nicm 874: }
875:
876: char *
1.5 nicm 877: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 878: {
1.4 nicm 879: struct screen *s = &wp->base;
1.5 nicm 880: char *newsearchstr, *line, *msg;
1.4 nicm 881: u_int i;
882:
1.5 nicm 883: msg = NULL;
884: xasprintf(&newsearchstr, "*%s*", searchstr);
885:
1.4 nicm 886: for (i = 0; i < screen_size_y(s); i++) {
887: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 888: if (fnmatch(newsearchstr, line, 0) == 0) {
889: msg = line;
890: if (lineno != NULL)
891: *lineno = i;
892: break;
893: }
1.4 nicm 894: xfree(line);
895: }
1.5 nicm 896:
897: xfree(newsearchstr);
898: return (msg);
1.45 nicm 899: }
900:
901: /* Find the pane directly above another. */
902: struct window_pane *
903: window_pane_find_up(struct window_pane *wp)
904: {
905: struct window_pane *wp2;
906: u_int left, top;
907:
908: if (wp == NULL || !window_pane_visible(wp))
909: return (NULL);
910:
911: top = wp->yoff;
912: if (top == 0)
913: top = wp->window->sy + 1;
914: left = wp->xoff;
915:
916: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
917: if (!window_pane_visible(wp2))
918: continue;
919: if (wp2->yoff + wp2->sy + 1 != top)
920: continue;
921: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
922: return (wp2);
923: }
924: return (NULL);
925: }
926:
927: /* Find the pane directly below another. */
928: struct window_pane *
929: window_pane_find_down(struct window_pane *wp)
930: {
931: struct window_pane *wp2;
932: u_int left, bottom;
933:
934: if (wp == NULL || !window_pane_visible(wp))
935: return (NULL);
936:
937: bottom = wp->yoff + wp->sy + 1;
938: if (bottom >= wp->window->sy)
939: bottom = 0;
940: left = wp->xoff;
941:
942: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
943: if (!window_pane_visible(wp2))
944: continue;
945: if (wp2->yoff != bottom)
946: continue;
947: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
948: return (wp2);
949: }
950: return (NULL);
951: }
952:
953: /*
954: * Find the pane directly to the left of another, adjacent to the left side and
955: * containing the top edge.
956: */
957: struct window_pane *
958: window_pane_find_left(struct window_pane *wp)
959: {
960: struct window_pane *wp2;
961: u_int left, top;
962:
963: if (wp == NULL || !window_pane_visible(wp))
964: return (NULL);
965:
966: left = wp->xoff;
967: if (left == 0)
968: left = wp->window->sx + 1;
969: top = wp->yoff;
970:
971: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
972: if (!window_pane_visible(wp2))
973: continue;
974: if (wp2->xoff + wp2->sx + 1 != left)
975: continue;
976: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
977: return (wp2);
978: }
979: return (NULL);
980: }
981:
982: /*
983: * Find the pane directly to the right of another, that is adjacent to the
984: * right edge and including the top edge.
985: */
986: struct window_pane *
987: window_pane_find_right(struct window_pane *wp)
988: {
989: struct window_pane *wp2;
990: u_int right, top;
991:
992: if (wp == NULL || !window_pane_visible(wp))
993: return (NULL);
994:
995: right = wp->xoff + wp->sx + 1;
996: if (right >= wp->window->sx)
997: right = 0;
998: top = wp->yoff;
999:
1000: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1001: if (!window_pane_visible(wp2))
1002: continue;
1003: if (wp2->xoff != right)
1004: continue;
1005: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
1006: return (wp2);
1007: }
1008: return (NULL);
1.1 nicm 1009: }
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