Annotation of src/usr.bin/tmux/window.c, Revision 1.59
1.59 ! nicm 1: /* $OpenBSD: window.c,v 1.58 2010/10/23 13:04:34 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 *
126: winlink_add(struct winlinks *wwl, struct window *w, int idx)
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: wl->window = w;
139: RB_INSERT(winlinks, wwl, wl);
140:
141: w->references++;
142:
143: return (wl);
144: }
145:
146: void
147: winlink_remove(struct winlinks *wwl, struct winlink *wl)
148: {
149: struct window *w = wl->window;
150:
151: RB_REMOVE(winlinks, wwl, wl);
1.40 nicm 152: if (wl->status_text != NULL)
153: xfree(wl->status_text);
1.1 nicm 154: xfree(wl);
155:
156: if (w->references == 0)
157: fatal("bad reference count");
158: w->references--;
159: if (w->references == 0)
160: window_destroy(w);
161: }
162:
163: struct winlink *
1.41 nicm 164: winlink_next(struct winlink *wl)
1.1 nicm 165: {
166: return (RB_NEXT(winlinks, wwl, wl));
167: }
168:
169: struct winlink *
1.41 nicm 170: winlink_previous(struct winlink *wl)
1.1 nicm 171: {
172: return (RB_PREV(winlinks, wwl, wl));
1.52 nicm 173: }
174:
175: struct winlink *
1.53 nicm 176: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 177: {
178: for (; n > 0; n--) {
179: if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53 nicm 180: wl = RB_MIN(winlinks, &s->windows);
1.52 nicm 181: }
182:
183: return (wl);
184: }
185:
186: struct winlink *
1.53 nicm 187: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52 nicm 188: {
189: for (; n > 0; n--) {
190: if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53 nicm 191: wl = RB_MAX(winlinks, &s->windows);
1.52 nicm 192: }
193:
194: return (wl);
1.1 nicm 195: }
196:
197: void
198: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
199: {
200: if (wl == NULL)
201: return;
202:
203: winlink_stack_remove(stack, wl);
1.28 nicm 204: TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1 nicm 205: }
206:
207: void
208: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
209: {
210: struct winlink *wl2;
211:
212: if (wl == NULL)
213: return;
1.42 nicm 214:
1.28 nicm 215: TAILQ_FOREACH(wl2, stack, sentry) {
1.1 nicm 216: if (wl2 == wl) {
1.28 nicm 217: TAILQ_REMOVE(stack, wl, sentry);
1.1 nicm 218: return;
219: }
220: }
221: }
222:
223: int
224: window_index(struct window *s, u_int *i)
225: {
226: for (*i = 0; *i < ARRAY_LENGTH(&windows); (*i)++) {
227: if (s == ARRAY_ITEM(&windows, *i))
228: return (0);
229: }
230: return (-1);
231: }
232:
233: struct window *
234: window_create1(u_int sx, u_int sy)
235: {
236: struct window *w;
237: u_int i;
238:
1.38 nicm 239: w = xcalloc(1, sizeof *w);
1.1 nicm 240: w->name = NULL;
241: w->flags = 0;
242:
243: TAILQ_INIT(&w->panes);
244: w->active = NULL;
1.14 nicm 245:
1.17 nicm 246: w->lastlayout = -1;
1.14 nicm 247: w->layout_root = NULL;
1.42 nicm 248:
1.1 nicm 249: w->sx = sx;
250: w->sy = sy;
251:
1.38 nicm 252: queue_window_name(w);
253:
1.7 nicm 254: options_init(&w->options, &global_w_options);
1.1 nicm 255:
256: for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
257: if (ARRAY_ITEM(&windows, i) == NULL) {
258: ARRAY_SET(&windows, i, w);
259: break;
260: }
261: }
262: if (i == ARRAY_LENGTH(&windows))
263: ARRAY_ADD(&windows, w);
264: w->references = 0;
265:
266: return (w);
267: }
268:
269: struct window *
1.23 nicm 270: window_create(const char *name, const char *cmd, const char *shell,
271: const char *cwd, struct environ *env, struct termios *tio,
272: u_int sx, u_int sy, u_int hlimit,char **cause)
1.1 nicm 273: {
1.14 nicm 274: struct window *w;
275: struct window_pane *wp;
1.1 nicm 276:
277: w = window_create1(sx, sy);
1.16 nicm 278: wp = window_add_pane(w, hlimit);
1.14 nicm 279: layout_init(w);
1.23 nicm 280: if (window_pane_spawn(wp, cmd, shell, cwd, env, tio, cause) != 0) {
1.1 nicm 281: window_destroy(w);
282: return (NULL);
283: }
284: w->active = TAILQ_FIRST(&w->panes);
285: if (name != NULL) {
286: w->name = xstrdup(name);
287: options_set_number(&w->options, "automatic-rename", 0);
288: } else
289: w->name = default_window_name(w);
290: return (w);
291: }
292:
293: void
294: window_destroy(struct window *w)
295: {
296: u_int i;
297:
298: if (window_index(w, &i) != 0)
299: fatalx("index not found");
300: ARRAY_SET(&windows, i, NULL);
301: while (!ARRAY_EMPTY(&windows) && ARRAY_LAST(&windows) == NULL)
302: ARRAY_TRUNC(&windows, 1);
303:
1.14 nicm 304: if (w->layout_root != NULL)
305: layout_free(w);
306:
1.38 nicm 307: evtimer_del(&w->name_timer);
308:
1.1 nicm 309: options_free(&w->options);
310:
311: window_destroy_panes(w);
312:
313: if (w->name != NULL)
314: xfree(w->name);
315: xfree(w);
316: }
317:
1.15 nicm 318: void
1.1 nicm 319: window_resize(struct window *w, u_int sx, u_int sy)
320: {
321: w->sx = sx;
322: w->sy = sy;
323: }
324:
325: void
326: window_set_active_pane(struct window *w, struct window_pane *wp)
327: {
1.59 ! nicm 328: if (wp == w->active)
! 329: return;
1.58 nicm 330: w->last = w->active;
1.1 nicm 331: w->active = wp;
1.10 nicm 332: while (!window_pane_visible(w->active)) {
1.1 nicm 333: w->active = TAILQ_PREV(w->active, window_panes, entry);
1.10 nicm 334: if (w->active == NULL)
335: w->active = TAILQ_LAST(&w->panes, window_panes);
336: if (w->active == wp)
337: return;
1.29 nicm 338: }
339: }
340:
341: void
342: window_set_active_at(struct window *w, u_int x, u_int y)
343: {
344: struct window_pane *wp;
345:
346: TAILQ_FOREACH(wp, &w->panes, entry) {
1.59 ! nicm 347: if (wp == w->active || !window_pane_visible(wp))
1.29 nicm 348: continue;
349: if (x < wp->xoff || x >= wp->xoff + wp->sx)
350: continue;
351: if (y < wp->yoff || y >= wp->yoff + wp->sy)
352: continue;
353: window_set_active_pane(w, wp);
354: break;
1.10 nicm 355: }
1.1 nicm 356: }
357:
358: struct window_pane *
1.16 nicm 359: window_add_pane(struct window *w, u_int hlimit)
1.1 nicm 360: {
361: struct window_pane *wp;
362:
1.14 nicm 363: wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.1 nicm 364: if (TAILQ_EMPTY(&w->panes))
365: TAILQ_INSERT_HEAD(&w->panes, wp, entry);
366: else
367: TAILQ_INSERT_AFTER(&w->panes, w->active, wp, entry);
368: return (wp);
369: }
370:
371: void
372: window_remove_pane(struct window *w, struct window_pane *wp)
373: {
1.57 nicm 374: if (wp == w->active) {
1.58 nicm 375: w->active = w->last;
376: w->last = NULL;
377: if (w->active == NULL) {
378: w->active = TAILQ_PREV(wp, window_panes, entry);
379: if (w->active == NULL)
380: w->active = TAILQ_NEXT(wp, entry);
381: }
382: } else if (wp == w->last)
383: w->last = NULL;
1.1 nicm 384:
385: TAILQ_REMOVE(&w->panes, wp, entry);
386: window_pane_destroy(wp);
387: }
388:
389: struct window_pane *
390: window_pane_at_index(struct window *w, u_int idx)
391: {
392: struct window_pane *wp;
393: u_int n;
394:
395: n = 0;
396: TAILQ_FOREACH(wp, &w->panes, entry) {
397: if (n == idx)
398: return (wp);
399: n++;
400: }
401: return (NULL);
1.53 nicm 402: }
403:
404: struct window_pane *
405: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
406: {
407: for (; n > 0; n--) {
408: if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
409: wp = TAILQ_FIRST(&w->panes);
410: }
411:
412: return (wp);
413: }
414:
415: struct window_pane *
416: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
417: u_int n)
418: {
419: for (; n > 0; n--) {
420: if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
421: wp = TAILQ_LAST(&w->panes, window_panes);
422: }
423:
424: return (wp);
1.13 nicm 425: }
426:
427: u_int
428: window_pane_index(struct window *w, struct window_pane *wp)
429: {
430: struct window_pane *wq;
431: u_int n;
432:
433: n = 0;
434: TAILQ_FOREACH(wq, &w->panes, entry) {
435: if (wp == wq)
436: break;
437: n++;
438: }
439: return (n);
1.1 nicm 440: }
441:
442: u_int
443: window_count_panes(struct window *w)
444: {
445: struct window_pane *wp;
446: u_int n;
447:
448: n = 0;
449: TAILQ_FOREACH(wp, &w->panes, entry)
450: n++;
451: return (n);
452: }
453:
454: void
455: window_destroy_panes(struct window *w)
456: {
457: struct window_pane *wp;
458:
459: while (!TAILQ_EMPTY(&w->panes)) {
460: wp = TAILQ_FIRST(&w->panes);
461: TAILQ_REMOVE(&w->panes, wp, entry);
462: window_pane_destroy(wp);
463: }
464: }
465:
466: struct window_pane *
467: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
468: {
469: struct window_pane *wp;
470:
471: wp = xcalloc(1, sizeof *wp);
472: wp->window = w;
473:
474: wp->cmd = NULL;
1.23 nicm 475: wp->shell = NULL;
1.1 nicm 476: wp->cwd = NULL;
477:
478: wp->fd = -1;
1.37 nicm 479: wp->event = NULL;
1.1 nicm 480:
481: wp->mode = NULL;
1.14 nicm 482:
483: wp->layout_cell = NULL;
1.1 nicm 484:
485: wp->xoff = 0;
1.42 nicm 486: wp->yoff = 0;
1.1 nicm 487:
488: wp->sx = sx;
489: wp->sy = sy;
490:
1.32 nicm 491: wp->pipe_fd = -1;
492: wp->pipe_off = 0;
1.36 nicm 493: wp->pipe_event = NULL;
1.32 nicm 494:
1.9 nicm 495: wp->saved_grid = NULL;
496:
1.1 nicm 497: screen_init(&wp->base, sx, sy, hlimit);
498: wp->screen = &wp->base;
499:
500: input_init(wp);
501:
502: return (wp);
503: }
504:
505: void
506: window_pane_destroy(struct window_pane *wp)
507: {
1.55 nicm 508: window_pane_reset_mode(wp);
509:
1.37 nicm 510: if (wp->fd != -1) {
1.1 nicm 511: close(wp->fd);
1.37 nicm 512: bufferevent_free(wp->event);
513: }
1.1 nicm 514:
515: input_free(wp);
516:
517: screen_free(&wp->base);
1.9 nicm 518: if (wp->saved_grid != NULL)
519: grid_destroy(wp->saved_grid);
1.1 nicm 520:
1.32 nicm 521: if (wp->pipe_fd != -1) {
522: close(wp->pipe_fd);
1.36 nicm 523: bufferevent_free(wp->pipe_event);
1.32 nicm 524: }
525:
1.1 nicm 526: if (wp->cwd != NULL)
527: xfree(wp->cwd);
1.23 nicm 528: if (wp->shell != NULL)
529: xfree(wp->shell);
1.1 nicm 530: if (wp->cmd != NULL)
531: xfree(wp->cmd);
532: xfree(wp);
533: }
534:
535: int
1.23 nicm 536: window_pane_spawn(struct window_pane *wp, const char *cmd, const char *shell,
1.21 nicm 537: const char *cwd, struct environ *env, struct termios *tio, char **cause)
1.1 nicm 538: {
1.47 nicm 539: struct winsize ws;
540: int mode;
541: char *argv0;
542: const char *ptr;
543: struct termios tio2;
1.1 nicm 544:
1.37 nicm 545: if (wp->fd != -1) {
1.1 nicm 546: close(wp->fd);
1.37 nicm 547: bufferevent_free(wp->event);
548: }
1.1 nicm 549: if (cmd != NULL) {
550: if (wp->cmd != NULL)
551: xfree(wp->cmd);
552: wp->cmd = xstrdup(cmd);
553: }
1.23 nicm 554: if (shell != NULL) {
555: if (wp->shell != NULL)
556: xfree(wp->shell);
557: wp->shell = xstrdup(shell);
558: }
1.1 nicm 559: if (cwd != NULL) {
560: if (wp->cwd != NULL)
561: xfree(wp->cwd);
562: wp->cwd = xstrdup(cwd);
563: }
564:
565: memset(&ws, 0, sizeof ws);
566: ws.ws_col = screen_size_x(&wp->base);
567: ws.ws_row = screen_size_y(&wp->base);
568:
1.42 nicm 569: switch (wp->pid = forkpty(&wp->fd, wp->tty, NULL, &ws)) {
1.1 nicm 570: case -1:
571: wp->fd = -1;
572: xasprintf(cause, "%s: %s", cmd, strerror(errno));
573: return (-1);
574: case 0:
575: if (chdir(wp->cwd) != 0)
576: chdir("/");
1.25 nicm 577:
578: if (tcgetattr(STDIN_FILENO, &tio2) != 0)
579: fatal("tcgetattr failed");
580: if (tio != NULL)
581: memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
582: tio2.c_cc[VERASE] = '\177';
583: if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
584: fatal("tcgetattr failed");
1.18 nicm 585:
1.56 nicm 586: closefrom(STDERR_FILENO + 1);
587:
1.47 nicm 588: environ_push(env);
1.18 nicm 589:
1.54 nicm 590: clear_signals(1);
1.1 nicm 591: log_close();
592:
1.8 nicm 593: if (*wp->cmd != '\0') {
1.24 nicm 594: /* Set SHELL but only if it is currently not useful. */
595: shell = getenv("SHELL");
596: if (shell == NULL || *shell == '\0' || areshell(shell))
597: setenv("SHELL", wp->shell, 1);
598:
1.8 nicm 599: execl(_PATH_BSHELL, "sh", "-c", wp->cmd, (char *) NULL);
600: fatal("execl failed");
601: }
602:
603: /* No command; fork a login shell. */
1.23 nicm 604: ptr = strrchr(wp->shell, '/');
605: if (ptr != NULL && *(ptr + 1) != '\0')
1.8 nicm 606: xasprintf(&argv0, "-%s", ptr + 1);
607: else
1.23 nicm 608: xasprintf(&argv0, "-%s", wp->shell);
1.24 nicm 609: setenv("SHELL", wp->shell, 1);
1.23 nicm 610: execl(wp->shell, argv0, (char *) NULL);
1.1 nicm 611: fatal("execl failed");
612: }
613:
614: if ((mode = fcntl(wp->fd, F_GETFL)) == -1)
615: fatal("fcntl failed");
616: if (fcntl(wp->fd, F_SETFL, mode|O_NONBLOCK) == -1)
617: fatal("fcntl failed");
1.37 nicm 618: wp->event = bufferevent_new(wp->fd,
619: window_pane_read_callback, NULL, window_pane_error_callback, wp);
620: bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1 nicm 621:
622: return (0);
623: }
624:
1.41 nicm 625: /* ARGSUSED */
1.15 nicm 626: void
1.37 nicm 627: window_pane_read_callback(unused struct bufferevent *bufev, void *data)
628: {
1.46 nicm 629: struct window_pane *wp = data;
630: char *new_data;
631: size_t new_size;
632:
633: new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
634: if (wp->pipe_fd != -1 && new_size > 0) {
635: new_data = EVBUFFER_DATA(wp->event->input);
636: bufferevent_write(wp->pipe_event, new_data, new_size);
637: }
638:
639: input_parse(wp);
1.37 nicm 640:
1.46 nicm 641: wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
1.37 nicm 642: }
643:
1.41 nicm 644: /* ARGSUSED */
1.37 nicm 645: void
646: window_pane_error_callback(
647: unused struct bufferevent *bufev, unused short what, void *data)
648: {
649: struct window_pane *wp = data;
650:
1.39 nicm 651: server_destroy_pane(wp);
1.37 nicm 652: }
653:
654: void
1.1 nicm 655: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
656: {
657: struct winsize ws;
658:
659: if (sx == wp->sx && sy == wp->sy)
1.15 nicm 660: return;
1.1 nicm 661: wp->sx = sx;
662: wp->sy = sy;
663:
664: memset(&ws, 0, sizeof ws);
665: ws.ws_col = sx;
666: ws.ws_row = sy;
667:
668: screen_resize(&wp->base, sx, sy);
669: if (wp->mode != NULL)
670: wp->mode->resize(wp, sx, sy);
671:
672: if (wp->fd != -1 && ioctl(wp->fd, TIOCSWINSZ, &ws) == -1)
673: fatal("ioctl failed");
1.44 nicm 674: }
675:
676: /*
677: * Enter alternative screen mode. A copy of the visible screen is saved and the
678: * history is not updated
679: */
680: void
681: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc)
682: {
683: struct screen *s = &wp->base;
684: u_int sx, sy;
685:
686: if (wp->saved_grid != NULL)
687: return;
688: if (!options_get_number(&wp->window->options, "alternate-screen"))
689: return;
690: sx = screen_size_x(s);
691: sy = screen_size_y(s);
692:
693: wp->saved_grid = grid_create(sx, sy, 0);
694: grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
695: wp->saved_cx = s->cx;
696: wp->saved_cy = s->cy;
697: memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
698:
699: grid_view_clear(s->grid, 0, 0, sx, sy);
700:
701: wp->base.grid->flags &= ~GRID_HISTORY;
702:
703: wp->flags |= PANE_REDRAW;
704: }
705:
706: /* Exit alternate screen mode and restore the copied grid. */
707: void
708: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc)
709: {
710: struct screen *s = &wp->base;
711: u_int sx, sy;
712:
713: if (wp->saved_grid == NULL)
714: return;
715: if (!options_get_number(&wp->window->options, "alternate-screen"))
716: return;
717: sx = screen_size_x(s);
718: sy = screen_size_y(s);
719:
720: /*
721: * If the current size is bigger, temporarily resize to the old size
722: * before copying back.
723: */
724: if (sy > wp->saved_grid->sy)
725: screen_resize(s, sx, wp->saved_grid->sy);
726:
727: /* Restore the grid, cursor position and cell. */
728: grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
729: s->cx = wp->saved_cx;
730: if (s->cx > screen_size_x(s) - 1)
731: s->cx = screen_size_x(s) - 1;
732: s->cy = wp->saved_cy;
733: if (s->cy > screen_size_y(s) - 1)
734: s->cy = screen_size_y(s) - 1;
735: memcpy(gc, &wp->saved_cell, sizeof *gc);
736:
737: /*
738: * Turn history back on (so resize can use it) and then resize back to
739: * the current size.
740: */
741: wp->base.grid->flags |= GRID_HISTORY;
742: if (sy > wp->saved_grid->sy)
743: screen_resize(s, sx, sy);
744:
745: grid_destroy(wp->saved_grid);
746: wp->saved_grid = NULL;
747:
748: wp->flags |= PANE_REDRAW;
1.1 nicm 749: }
750:
751: int
752: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode)
753: {
754: struct screen *s;
755:
1.15 nicm 756: if (wp->mode != NULL)
1.1 nicm 757: return (1);
758: wp->mode = mode;
759:
760: if ((s = wp->mode->init(wp)) != NULL)
761: wp->screen = s;
1.34 nicm 762: wp->flags |= PANE_REDRAW;
1.1 nicm 763: return (0);
764: }
765:
766: void
767: window_pane_reset_mode(struct window_pane *wp)
768: {
769: if (wp->mode == NULL)
770: return;
771:
772: wp->mode->free(wp);
773: wp->mode = NULL;
774:
775: wp->screen = &wp->base;
1.34 nicm 776: wp->flags |= PANE_REDRAW;
1.1 nicm 777: }
778:
779: void
1.51 nicm 780: window_pane_key(struct window_pane *wp, struct session *sess, int key)
1.1 nicm 781: {
1.27 nicm 782: struct window_pane *wp2;
783:
1.30 nicm 784: if (!window_pane_visible(wp))
1.3 nicm 785: return;
786:
1.1 nicm 787: if (wp->mode != NULL) {
788: if (wp->mode->key != NULL)
1.51 nicm 789: wp->mode->key(wp, sess, key);
1.27 nicm 790: return;
1.30 nicm 791: }
1.27 nicm 792:
1.30 nicm 793: if (wp->fd == -1)
794: return;
1.27 nicm 795: input_key(wp, key);
796: if (options_get_number(&wp->window->options, "synchronize-panes")) {
797: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
798: if (wp2 == wp || wp2->mode != NULL)
799: continue;
800: if (wp2->fd != -1 && window_pane_visible(wp2))
801: input_key(wp2, key);
802: }
803: }
1.1 nicm 804: }
805:
806: void
807: window_pane_mouse(
1.51 nicm 808: struct window_pane *wp, struct session *sess, struct mouse_event *m)
1.1 nicm 809: {
1.30 nicm 810: if (!window_pane_visible(wp))
1.3 nicm 811: return;
812:
1.31 nicm 813: if (m->x < wp->xoff || m->x >= wp->xoff + wp->sx)
1.1 nicm 814: return;
1.31 nicm 815: if (m->y < wp->yoff || m->y >= wp->yoff + wp->sy)
1.1 nicm 816: return;
1.31 nicm 817: m->x -= wp->xoff;
818: m->y -= wp->yoff;
1.1 nicm 819:
820: if (wp->mode != NULL) {
821: if (wp->mode->mouse != NULL)
1.51 nicm 822: wp->mode->mouse(wp, sess, m);
1.30 nicm 823: } else if (wp->fd != -1)
1.31 nicm 824: input_mouse(wp, m);
1.10 nicm 825: }
826:
827: int
828: window_pane_visible(struct window_pane *wp)
829: {
830: struct window *w = wp->window;
831:
832: if (wp->xoff >= w->sx || wp->yoff >= w->sy)
833: return (0);
834: if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)
835: return (0);
836: return (1);
1.1 nicm 837: }
838:
839: char *
1.5 nicm 840: window_pane_search(struct window_pane *wp, const char *searchstr, u_int *lineno)
1.1 nicm 841: {
1.4 nicm 842: struct screen *s = &wp->base;
1.5 nicm 843: char *newsearchstr, *line, *msg;
1.4 nicm 844: u_int i;
845:
1.5 nicm 846: msg = NULL;
847: xasprintf(&newsearchstr, "*%s*", searchstr);
848:
1.4 nicm 849: for (i = 0; i < screen_size_y(s); i++) {
850: line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
1.5 nicm 851: if (fnmatch(newsearchstr, line, 0) == 0) {
852: msg = line;
853: if (lineno != NULL)
854: *lineno = i;
855: break;
856: }
1.4 nicm 857: xfree(line);
858: }
1.5 nicm 859:
860: xfree(newsearchstr);
861: return (msg);
1.45 nicm 862: }
863:
864: /* Find the pane directly above another. */
865: struct window_pane *
866: window_pane_find_up(struct window_pane *wp)
867: {
868: struct window_pane *wp2;
869: u_int left, top;
870:
871: if (wp == NULL || !window_pane_visible(wp))
872: return (NULL);
873:
874: top = wp->yoff;
875: if (top == 0)
876: top = wp->window->sy + 1;
877: left = wp->xoff;
878:
879: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
880: if (!window_pane_visible(wp2))
881: continue;
882: if (wp2->yoff + wp2->sy + 1 != top)
883: continue;
884: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
885: return (wp2);
886: }
887: return (NULL);
888: }
889:
890: /* Find the pane directly below another. */
891: struct window_pane *
892: window_pane_find_down(struct window_pane *wp)
893: {
894: struct window_pane *wp2;
895: u_int left, bottom;
896:
897: if (wp == NULL || !window_pane_visible(wp))
898: return (NULL);
899:
900: bottom = wp->yoff + wp->sy + 1;
901: if (bottom >= wp->window->sy)
902: bottom = 0;
903: left = wp->xoff;
904:
905: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
906: if (!window_pane_visible(wp2))
907: continue;
908: if (wp2->yoff != bottom)
909: continue;
910: if (left >= wp2->xoff && left <= wp2->xoff + wp2->sx)
911: return (wp2);
912: }
913: return (NULL);
914: }
915:
916: /*
917: * Find the pane directly to the left of another, adjacent to the left side and
918: * containing the top edge.
919: */
920: struct window_pane *
921: window_pane_find_left(struct window_pane *wp)
922: {
923: struct window_pane *wp2;
924: u_int left, top;
925:
926: if (wp == NULL || !window_pane_visible(wp))
927: return (NULL);
928:
929: left = wp->xoff;
930: if (left == 0)
931: left = wp->window->sx + 1;
932: top = wp->yoff;
933:
934: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
935: if (!window_pane_visible(wp2))
936: continue;
937: if (wp2->xoff + wp2->sx + 1 != left)
938: continue;
939: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
940: return (wp2);
941: }
942: return (NULL);
943: }
944:
945: /*
946: * Find the pane directly to the right of another, that is adjacent to the
947: * right edge and including the top edge.
948: */
949: struct window_pane *
950: window_pane_find_right(struct window_pane *wp)
951: {
952: struct window_pane *wp2;
953: u_int right, top;
954:
955: if (wp == NULL || !window_pane_visible(wp))
956: return (NULL);
957:
958: right = wp->xoff + wp->sx + 1;
959: if (right >= wp->window->sx)
960: right = 0;
961: top = wp->yoff;
962:
963: TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
964: if (!window_pane_visible(wp2))
965: continue;
966: if (wp2->xoff != right)
967: continue;
968: if (top >= wp2->yoff && top <= wp2->yoff + wp2->sy)
969: return (wp2);
970: }
971: return (NULL);
1.1 nicm 972: }
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