1/* $OpenBSD$ */
2
3/*
4 * Copyright (c) 2007 Nicholas Marriott <[email protected]>
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 <netinet/in.h>
23
24#include <curses.h>
25#include <errno.h>
26#include <fcntl.h>
27#include <resolv.h>
28#include <stdlib.h>
29#include <string.h>
30#include <termios.h>
31#include <unistd.h>
32
33#include "tmux.h"
34
35static int tty_log_fd = -1;
36
37static int tty_client_ready(struct client *, struct window_pane *);
38
39static void tty_set_italics(struct tty *);
40static int tty_try_colour(struct tty *, int, const char *);
41static void tty_force_cursor_colour(struct tty *, const char *);
42static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
43 u_int);
44static void tty_cursor_pane_unless_wrap(struct tty *,
45 const struct tty_ctx *, u_int, u_int);
46static void tty_invalidate(struct tty *);
47static void tty_colours(struct tty *, const struct grid_cell *);
48static void tty_check_fg(struct tty *, struct window_pane *,
49 struct grid_cell *);
50static void tty_check_bg(struct tty *, struct window_pane *,
51 struct grid_cell *);
52static void tty_check_us(struct tty *, struct window_pane *,
53 struct grid_cell *);
54static void tty_colours_fg(struct tty *, const struct grid_cell *);
55static void tty_colours_bg(struct tty *, const struct grid_cell *);
56static void tty_colours_us(struct tty *, const struct grid_cell *);
57
58static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
59 u_int);
60static void tty_region(struct tty *, u_int, u_int);
61static void tty_margin_pane(struct tty *, const struct tty_ctx *);
62static void tty_margin(struct tty *, u_int, u_int);
63static int tty_large_region(struct tty *, const struct tty_ctx *);
64static int tty_fake_bce(const struct tty *, struct window_pane *, u_int);
65static void tty_redraw_region(struct tty *, const struct tty_ctx *);
66static void tty_emulate_repeat(struct tty *, enum tty_code_code,
67 enum tty_code_code, u_int);
68static void tty_repeat_space(struct tty *, u_int);
69static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
70static void tty_cell(struct tty *, const struct grid_cell *,
71 struct window_pane *);
72static void tty_default_colours(struct grid_cell *, struct window_pane *);
73static void tty_default_attributes(struct tty *, struct window_pane *,
74 u_int);
75
76#define tty_use_margin(tty) \
77 ((tty->term->flags|tty->term_flags) & TERM_DECSLRM)
78
79#define tty_pane_full_width(tty, ctx) \
80 ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
81
82#define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
83#define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
84#define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
85
86void
87tty_create_log(void)
88{
89 char name[64];
90
91 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
92
93 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
94 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
95 fatal("fcntl failed");
96}
97
98int
99tty_init(struct tty *tty, struct client *c, int fd, char *term)
100{
101 if (!isatty(fd))
102 return (-1);
103
104 memset(tty, 0, sizeof *tty);
105
106 if (term == NULL || *term == '\0')
107 tty->term_name = xstrdup("unknown");
108 else
109 tty->term_name = xstrdup(term);
110
111 tty->fd = fd;
112 tty->client = c;
113
114 tty->cstyle = 0;
115 tty->ccolour = xstrdup("");
116
117 tty->flags = 0;
118 tty->term_flags = 0;
119
120 return (0);
121}
122
123void
124tty_resize(struct tty *tty)
125{
126 struct client *c = tty->client;
127 struct winsize ws;
128 u_int sx, sy, xpixel, ypixel;
129
130 if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
131 sx = ws.ws_col;
132 if (sx == 0) {
133 sx = 80;
134 xpixel = 0;
135 } else
136 xpixel = ws.ws_xpixel / sx;
137 sy = ws.ws_row;
138 if (sy == 0) {
139 sy = 24;
140 ypixel = 0;
141 } else
142 ypixel = ws.ws_ypixel / sy;
143 } else {
144 sx = 80;
145 sy = 24;
146 xpixel = 0;
147 ypixel = 0;
148 }
149 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
150 xpixel, ypixel);
151 tty_set_size(tty, sx, sy, xpixel, ypixel);
152 tty_invalidate(tty);
153}
154
155void
156tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
157{
158 tty->sx = sx;
159 tty->sy = sy;
160 tty->xpixel = xpixel;
161 tty->ypixel = ypixel;
162}
163
164static void
165tty_read_callback(__unused int fd, __unused short events, void *data)
166{
167 struct tty *tty = data;
168 struct client *c = tty->client;
169 size_t size = EVBUFFER_LENGTH(tty->in);
170 int nread;
171
172 nread = evbuffer_read(tty->in, tty->fd, -1);
173 if (nread == 0 || nread == -1) {
174 event_del(&tty->event_in);
175 server_client_lost(tty->client);
176 return;
177 }
178 log_debug("%s: read %d bytes (already %zu)", c->name, nread, size);
179
180 while (tty_keys_next(tty))
181 ;
182}
183
184static void
185tty_timer_callback(__unused int fd, __unused short events, void *data)
186{
187 struct tty *tty = data;
188 struct client *c = tty->client;
189 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
190
191 log_debug("%s: %zu discarded", c->name, tty->discarded);
192
193 c->flags |= CLIENT_ALLREDRAWFLAGS;
194 c->discarded += tty->discarded;
195
196 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
197 tty->flags &= ~TTY_BLOCK;
198 tty_invalidate(tty);
199 return;
200 }
201 tty->discarded = 0;
202 evtimer_add(&tty->timer, &tv);
203}
204
205static int
206tty_block_maybe(struct tty *tty)
207{
208 struct client *c = tty->client;
209 size_t size = EVBUFFER_LENGTH(tty->out);
210 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
211
212 if (size < TTY_BLOCK_START(tty))
213 return (0);
214
215 if (tty->flags & TTY_BLOCK)
216 return (1);
217 tty->flags |= TTY_BLOCK;
218
219 log_debug("%s: can't keep up, %zu discarded", c->name, size);
220
221 evbuffer_drain(tty->out, size);
222 c->discarded += size;
223
224 tty->discarded = 0;
225 evtimer_add(&tty->timer, &tv);
226 return (1);
227}
228
229static void
230tty_write_callback(__unused int fd, __unused short events, void *data)
231{
232 struct tty *tty = data;
233 struct client *c = tty->client;
234 size_t size = EVBUFFER_LENGTH(tty->out);
235 int nwrite;
236
237 nwrite = evbuffer_write(tty->out, tty->fd);
238 if (nwrite == -1)
239 return;
240 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
241
242 if (c->redraw > 0) {
243 if ((size_t)nwrite >= c->redraw)
244 c->redraw = 0;
245 else
246 c->redraw -= nwrite;
247 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
248 c->redraw);
249 } else if (tty_block_maybe(tty))
250 return;
251
252 if (EVBUFFER_LENGTH(tty->out) != 0)
253 event_add(&tty->event_out, NULL);
254}
255
256int
257tty_open(struct tty *tty, char **cause)
258{
259 tty->term = tty_term_find(tty->term_name, tty->fd, cause);
260 if (tty->term == NULL) {
261 tty_close(tty);
262 return (-1);
263 }
264 tty->flags |= TTY_OPENED;
265
266 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
267
268 event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
269 tty_read_callback, tty);
270 tty->in = evbuffer_new();
271 if (tty->in == NULL)
272 fatal("out of memory");
273
274 event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
275 tty->out = evbuffer_new();
276 if (tty->out == NULL)
277 fatal("out of memory");
278
279 evtimer_set(&tty->timer, tty_timer_callback, tty);
280
281 tty_start_tty(tty);
282
283 tty_keys_build(tty);
284
285 return (0);
286}
287
288static void
289tty_start_timer_callback(__unused int fd, __unused short events, void *data)
290{
291 struct tty *tty = data;
292 struct client *c = tty->client;
293
294 log_debug("%s: start timer fired", c->name);
295 tty->flags |= (TTY_HAVEDA|TTY_HAVEDSR);
296}
297
298void
299tty_start_tty(struct tty *tty)
300{
301 struct client *c = tty->client;
302 struct termios tio;
303 struct timeval tv = { .tv_sec = 1 };
304
305 if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
306 setblocking(tty->fd, 0);
307 event_add(&tty->event_in, NULL);
308
309 memcpy(&tio, &tty->tio, sizeof tio);
310 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
311 tio.c_iflag |= IGNBRK;
312 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
313 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
314 ECHOPRT|ECHOKE|ISIG);
315 tio.c_cc[VMIN] = 1;
316 tio.c_cc[VTIME] = 0;
317 if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
318 tcflush(tty->fd, TCIOFLUSH);
319 }
320
321 tty_putcode(tty, TTYC_SMCUP);
322
323 tty_putcode(tty, TTYC_SMKX);
324 tty_putcode(tty, TTYC_CLEAR);
325
326 if (tty_acs_needed(tty)) {
327 log_debug("%s: using capabilities for ACS", c->name);
328 tty_putcode(tty, TTYC_ENACS);
329 } else
330 log_debug("%s: using UTF-8 for ACS", c->name);
331
332 tty_putcode(tty, TTYC_CNORM);
333 if (tty_term_has(tty->term, TTYC_KMOUS)) {
334 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
335 tty_puts(tty, "\033[?1006l\033[?1005l");
336 }
337
338 if (tty_term_flag(tty->term, TTYC_XT)) {
339 if (options_get_number(global_options, "focus-events")) {
340 tty->flags |= TTY_FOCUS;
341 tty_puts(tty, "\033[?1004h");
342 }
343 if (~tty->flags & TTY_HAVEDA)
344 tty_puts(tty, "\033[c");
345 if (~tty->flags & TTY_HAVEDSR)
346 tty_puts(tty, "\033[1337n");
347 } else
348 tty->flags |= (TTY_HAVEDA|TTY_HAVEDSR);
349
350 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
351 evtimer_add(&tty->start_timer, &tv);
352
353 tty->flags |= TTY_STARTED;
354 tty_invalidate(tty);
355
356 if (*tty->ccolour != '\0')
357 tty_force_cursor_colour(tty, "");
358
359 tty->mouse_drag_flag = 0;
360 tty->mouse_drag_update = NULL;
361 tty->mouse_drag_release = NULL;
362}
363
364void
365tty_stop_tty(struct tty *tty)
366{
367 struct winsize ws;
368
369 if (!(tty->flags & TTY_STARTED))
370 return;
371 tty->flags &= ~TTY_STARTED;
372
373 evtimer_del(&tty->start_timer);
374
375 event_del(&tty->timer);
376 tty->flags &= ~TTY_BLOCK;
377
378 event_del(&tty->event_in);
379 event_del(&tty->event_out);
380
381 /*
382 * Be flexible about error handling and try not kill the server just
383 * because the fd is invalid. Things like ssh -t can easily leave us
384 * with a dead tty.
385 */
386 if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
387 return;
388 if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
389 return;
390
391 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
392 if (tty_acs_needed(tty))
393 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
394 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
395 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
396 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
397 if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) {
398 if (tty_term_has(tty->term, TTYC_SE))
399 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
400 else
401 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
402 }
403 if (tty->mode & MODE_BRACKETPASTE)
404 tty_raw(tty, "\033[?2004l");
405 if (*tty->ccolour != '\0')
406 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
407
408 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
409 if (tty_term_has(tty->term, TTYC_KMOUS)) {
410 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
411 tty_raw(tty, "\033[?1006l\033[?1005l");
412 }
413
414 if (tty_term_flag(tty->term, TTYC_XT)) {
415 if (tty->flags & TTY_FOCUS) {
416 tty->flags &= ~TTY_FOCUS;
417 tty_raw(tty, "\033[?1004l");
418 }
419 }
420
421 if (tty_use_margin(tty))
422 tty_raw(tty, "\033[?69l"); /* DECLRMM */
423 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
424
425 setblocking(tty->fd, 1);
426}
427
428void
429tty_close(struct tty *tty)
430{
431 if (event_initialized(&tty->key_timer))
432 evtimer_del(&tty->key_timer);
433 tty_stop_tty(tty);
434
435 if (tty->flags & TTY_OPENED) {
436 evbuffer_free(tty->in);
437 event_del(&tty->event_in);
438 evbuffer_free(tty->out);
439 event_del(&tty->event_out);
440
441 tty_term_free(tty->term);
442 tty_keys_free(tty);
443
444 tty->flags &= ~TTY_OPENED;
445 }
446
447 if (tty->fd != -1) {
448 close(tty->fd);
449 tty->fd = -1;
450 }
451}
452
453void
454tty_free(struct tty *tty)
455{
456 tty_close(tty);
457
458 free(tty->ccolour);
459 free(tty->term_name);
460}
461
462void
463tty_set_flags(struct tty *tty, int flags)
464{
465 tty->term_flags |= flags;
466
467 if (tty_use_margin(tty))
468 tty_puts(tty, "\033[?69h"); /* DECLRMM */
469}
470
471void
472tty_raw(struct tty *tty, const char *s)
473{
474 ssize_t n, slen;
475 u_int i;
476
477 slen = strlen(s);
478 for (i = 0; i < 5; i++) {
479 n = write(tty->fd, s, slen);
480 if (n >= 0) {
481 s += n;
482 slen -= n;
483 if (slen == 0)
484 break;
485 } else if (n == -1 && errno != EAGAIN)
486 break;
487 usleep(100);
488 }
489}
490
491void
492tty_putcode(struct tty *tty, enum tty_code_code code)
493{
494 tty_puts(tty, tty_term_string(tty->term, code));
495}
496
497void
498tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
499{
500 if (a < 0)
501 return;
502 tty_puts(tty, tty_term_string1(tty->term, code, a));
503}
504
505void
506tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
507{
508 if (a < 0 || b < 0)
509 return;
510 tty_puts(tty, tty_term_string2(tty->term, code, a, b));
511}
512
513void
514tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
515{
516 if (a < 0 || b < 0 || c < 0)
517 return;
518 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
519}
520
521void
522tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
523{
524 if (a != NULL)
525 tty_puts(tty, tty_term_ptr1(tty->term, code, a));
526}
527
528void
529tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
530 const void *b)
531{
532 if (a != NULL && b != NULL)
533 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
534}
535
536static void
537tty_add(struct tty *tty, const char *buf, size_t len)
538{
539 struct client *c = tty->client;
540
541 if (tty->flags & TTY_BLOCK) {
542 tty->discarded += len;
543 return;
544 }
545
546 evbuffer_add(tty->out, buf, len);
547 log_debug("%s: %.*s", c->name, (int)len, buf);
548 c->written += len;
549
550 if (tty_log_fd != -1)
551 write(tty_log_fd, buf, len);
552 if (tty->flags & TTY_STARTED)
553 event_add(&tty->event_out, NULL);
554}
555
556void
557tty_puts(struct tty *tty, const char *s)
558{
559 if (*s != '\0')
560 tty_add(tty, s, strlen(s));
561}
562
563void
564tty_putc(struct tty *tty, u_char ch)
565{
566 const char *acs;
567
568 if ((tty->term->flags & TERM_NOXENL) &&
569 ch >= 0x20 && ch != 0x7f &&
570 tty->cy == tty->sy - 1 &&
571 tty->cx + 1 >= tty->sx)
572 return;
573
574 if (tty->cell.attr & GRID_ATTR_CHARSET) {
575 acs = tty_acs_get(tty, ch);
576 if (acs != NULL)
577 tty_add(tty, acs, strlen(acs));
578 else
579 tty_add(tty, &ch, 1);
580 } else
581 tty_add(tty, &ch, 1);
582
583 if (ch >= 0x20 && ch != 0x7f) {
584 if (tty->cx >= tty->sx) {
585 tty->cx = 1;
586 if (tty->cy != tty->rlower)
587 tty->cy++;
588
589 /*
590 * On !xenl terminals, force the cursor position to
591 * where we think it should be after a line wrap - this
592 * means it works on sensible terminals as well.
593 */
594 if (tty->term->flags & TERM_NOXENL)
595 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
596 } else
597 tty->cx++;
598 }
599}
600
601void
602tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
603{
604 if ((tty->term->flags & TERM_NOXENL) &&
605 tty->cy == tty->sy - 1 &&
606 tty->cx + len >= tty->sx)
607 len = tty->sx - tty->cx - 1;
608
609 tty_add(tty, buf, len);
610 if (tty->cx + width > tty->sx) {
611 tty->cx = (tty->cx + width) - tty->sx;
612 if (tty->cx <= tty->sx)
613 tty->cy++;
614 else
615 tty->cx = tty->cy = UINT_MAX;
616 } else
617 tty->cx += width;
618}
619
620static void
621tty_set_italics(struct tty *tty)
622{
623 const char *s;
624
625 if (tty_term_has(tty->term, TTYC_SITM)) {
626 s = options_get_string(global_options, "default-terminal");
627 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
628 tty_putcode(tty, TTYC_SITM);
629 return;
630 }
631 }
632 tty_putcode(tty, TTYC_SMSO);
633}
634
635void
636tty_set_title(struct tty *tty, const char *title)
637{
638 if (!tty_term_has(tty->term, TTYC_TSL) ||
639 !tty_term_has(tty->term, TTYC_FSL))
640 return;
641
642 tty_putcode(tty, TTYC_TSL);
643 tty_puts(tty, title);
644 tty_putcode(tty, TTYC_FSL);
645}
646
647static void
648tty_force_cursor_colour(struct tty *tty, const char *ccolour)
649{
650 if (*ccolour == '\0')
651 tty_putcode(tty, TTYC_CR);
652 else
653 tty_putcode_ptr1(tty, TTYC_CS, ccolour);
654 free(tty->ccolour);
655 tty->ccolour = xstrdup(ccolour);
656}
657
658void
659tty_update_mode(struct tty *tty, int mode, struct screen *s)
660{
661 int changed;
662
663 if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
664 tty_force_cursor_colour(tty, s->ccolour);
665
666 if (tty->flags & TTY_NOCURSOR)
667 mode &= ~MODE_CURSOR;
668
669 changed = mode ^ tty->mode;
670 if (changed & MODE_BLINKING) {
671 if (tty_term_has(tty->term, TTYC_CVVIS))
672 tty_putcode(tty, TTYC_CVVIS);
673 else
674 tty_putcode(tty, TTYC_CNORM);
675 changed |= MODE_CURSOR;
676 }
677 if (changed & MODE_CURSOR) {
678 if (mode & MODE_CURSOR)
679 tty_putcode(tty, TTYC_CNORM);
680 else
681 tty_putcode(tty, TTYC_CIVIS);
682 }
683 if (s != NULL && tty->cstyle != s->cstyle) {
684 if (tty_term_has(tty->term, TTYC_SS)) {
685 if (s->cstyle == 0 &&
686 tty_term_has(tty->term, TTYC_SE))
687 tty_putcode(tty, TTYC_SE);
688 else
689 tty_putcode1(tty, TTYC_SS, s->cstyle);
690 }
691 tty->cstyle = s->cstyle;
692 }
693 if (changed & ALL_MOUSE_MODES) {
694 if (mode & ALL_MOUSE_MODES) {
695 /*
696 * Enable the SGR (1006) extension unconditionally, as
697 * it is safe from misinterpretation.
698 */
699 tty_puts(tty, "\033[?1006h");
700 if (mode & MODE_MOUSE_ALL)
701 tty_puts(tty, "\033[?1003h");
702 else if (mode & MODE_MOUSE_BUTTON)
703 tty_puts(tty, "\033[?1002h");
704 else if (mode & MODE_MOUSE_STANDARD)
705 tty_puts(tty, "\033[?1000h");
706 } else {
707 if (tty->mode & MODE_MOUSE_ALL)
708 tty_puts(tty, "\033[?1003l");
709 else if (tty->mode & MODE_MOUSE_BUTTON)
710 tty_puts(tty, "\033[?1002l");
711 else if (tty->mode & MODE_MOUSE_STANDARD)
712 tty_puts(tty, "\033[?1000l");
713 tty_puts(tty, "\033[?1006l");
714 }
715 }
716 if (changed & MODE_BRACKETPASTE) {
717 if (mode & MODE_BRACKETPASTE)
718 tty_puts(tty, "\033[?2004h");
719 else
720 tty_puts(tty, "\033[?2004l");
721 }
722 tty->mode = mode;
723}
724
725static void
726tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
727 enum tty_code_code code1, u_int n)
728{
729 if (tty_term_has(tty->term, code))
730 tty_putcode1(tty, code, n);
731 else {
732 while (n-- > 0)
733 tty_putcode(tty, code1);
734 }
735}
736
737static void
738tty_repeat_space(struct tty *tty, u_int n)
739{
740 static char s[500];
741
742 if (*s != ' ')
743 memset(s, ' ', sizeof s);
744
745 while (n > sizeof s) {
746 tty_putn(tty, s, sizeof s, sizeof s);
747 n -= sizeof s;
748 }
749 if (n != 0)
750 tty_putn(tty, s, n, n);
751}
752
753/* Is this window bigger than the terminal? */
754int
755tty_window_bigger(struct tty *tty)
756{
757 struct client *c = tty->client;
758 struct window *w = c->session->curw->window;
759
760 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
761}
762
763/* What offset should this window be drawn at? */
764int
765tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
766{
767 *ox = tty->oox;
768 *oy = tty->ooy;
769 *sx = tty->osx;
770 *sy = tty->osy;
771
772 return (tty->oflag);
773}
774
775/* What offset should this window be drawn at? */
776static int
777tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
778{
779 struct client *c = tty->client;
780 struct window *w = c->session->curw->window;
781 struct window_pane *wp = w->active;
782 u_int cx, cy, lines;
783
784 lines = status_line_size(c);
785
786 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
787 *ox = 0;
788 *oy = 0;
789 *sx = w->sx;
790 *sy = w->sy;
791
792 c->pan_window = NULL;
793 return (0);
794 }
795
796 *sx = tty->sx;
797 *sy = tty->sy - lines;
798
799 if (c->pan_window == w) {
800 if (*sx >= w->sx)
801 c->pan_ox = 0;
802 else if (c->pan_ox + *sx > w->sx)
803 c->pan_ox = w->sx - *sx;
804 *ox = c->pan_ox;
805 if (*sy >= w->sy)
806 c->pan_oy = 0;
807 else if (c->pan_oy + *sy > w->sy)
808 c->pan_oy = w->sy - *sy;
809 *oy = c->pan_oy;
810 return (1);
811 }
812
813 if (~wp->screen->mode & MODE_CURSOR) {
814 *ox = 0;
815 *oy = 0;
816 } else {
817 cx = wp->xoff + wp->screen->cx;
818 cy = wp->yoff + wp->screen->cy;
819
820 if (cx < *sx)
821 *ox = 0;
822 else if (cx > w->sx - *sx)
823 *ox = w->sx - *sx;
824 else
825 *ox = cx - *sx / 2;
826
827 if (cy < *sy)
828 *oy = 0;
829 else if (cy > w->sy - *sy)
830 *oy = w->sy - *sy;
831 else
832 *oy = cy - *sy / 2;
833 }
834
835 c->pan_window = NULL;
836 return (1);
837}
838
839/* Update stored offsets for a window and redraw if necessary. */
840void
841tty_update_window_offset(struct window *w)
842{
843 struct client *c;
844
845 TAILQ_FOREACH(c, &clients, entry) {
846 if (c->session != NULL && c->session->curw->window == w)
847 tty_update_client_offset(c);
848 }
849}
850
851/* Update stored offsets for a client and redraw if necessary. */
852void
853tty_update_client_offset(struct client *c)
854{
855 u_int ox, oy, sx, sy;
856
857 if (~c->flags & CLIENT_TERMINAL)
858 return;
859
860 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
861 if (ox == c->tty.oox &&
862 oy == c->tty.ooy &&
863 sx == c->tty.osx &&
864 sy == c->tty.osy)
865 return;
866
867 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
868 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
869 ox, oy, sx, sy);
870
871 c->tty.oox = ox;
872 c->tty.ooy = oy;
873 c->tty.osx = sx;
874 c->tty.osy = sy;
875
876 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
877}
878
879/*
880 * Is the region large enough to be worth redrawing once later rather than
881 * probably several times now? Currently yes if it is more than 50% of the
882 * pane.
883 */
884static int
885tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
886{
887 struct window_pane *wp = ctx->wp;
888
889 return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2);
890}
891
892/*
893 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
894 * emulated.
895 */
896static int
897tty_fake_bce(const struct tty *tty, struct window_pane *wp, u_int bg)
898{
899 struct grid_cell gc;
900
901 if (tty_term_flag(tty->term, TTYC_BCE))
902 return (0);
903
904 memcpy(&gc, &grid_default_cell, sizeof gc);
905 if (wp != NULL)
906 tty_default_colours(&gc, wp);
907
908 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc.bg))
909 return (1);
910 return (0);
911}
912
913/*
914 * Redraw scroll region using data from screen (already updated). Used when
915 * CSR not supported, or window is a pane that doesn't take up the full
916 * width of the terminal.
917 */
918static void
919tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
920{
921 struct window_pane *wp = ctx->wp;
922 struct screen *s = wp->screen;
923 u_int i;
924
925 /*
926 * If region is large, schedule a window redraw. In most cases this is
927 * likely to be followed by some more scrolling.
928 */
929 if (tty_large_region(tty, ctx)) {
930 wp->flags |= PANE_REDRAW;
931 return;
932 }
933
934 if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
935 for (i = ctx->ocy; i < screen_size_y(s); i++)
936 tty_draw_pane(tty, ctx, i);
937 } else {
938 for (i = ctx->orupper; i <= ctx->orlower; i++)
939 tty_draw_pane(tty, ctx, i);
940 }
941}
942
943/* Is this position visible in the pane? */
944static int
945tty_is_visible(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
946 u_int nx, u_int ny)
947{
948 u_int xoff = ctx->xoff + px, yoff = ctx->yoff + py, lines;
949
950 if (!ctx->bigger)
951 return (1);
952
953 if (status_at_line(tty->client) == 0)
954 lines = status_line_size(tty->client);
955 else
956 lines = 0;
957
958 if (xoff + nx <= ctx->ox || xoff >= ctx->ox + ctx->sx ||
959 yoff + ny <= ctx->oy || yoff >= lines + ctx->oy + ctx->sy)
960 return (0);
961 return (1);
962}
963
964/* Clamp line position to visible part of pane. */
965static int
966tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
967 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
968{
969 struct window_pane *wp = ctx->wp;
970 u_int xoff = wp->xoff + px;
971
972 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
973 return (0);
974 *ry = ctx->yoff + py - ctx->oy;
975
976 if (xoff >= ctx->ox && xoff + nx <= ctx->ox + ctx->sx) {
977 /* All visible. */
978 *i = 0;
979 *x = ctx->xoff + px - ctx->ox;
980 *rx = nx;
981 } else if (xoff < ctx->ox && xoff + nx > ctx->ox + ctx->sx) {
982 /* Both left and right not visible. */
983 *i = ctx->ox;
984 *x = 0;
985 *rx = ctx->sx;
986 } else if (xoff < ctx->ox) {
987 /* Left not visible. */
988 *i = ctx->ox - (ctx->xoff + px);
989 *x = 0;
990 *rx = nx - *i;
991 } else {
992 /* Right not visible. */
993 *i = 0;
994 *x = (ctx->xoff + px) - ctx->ox;
995 *rx = ctx->sx - *x;
996 }
997 if (*rx > nx)
998 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
999
1000 return (1);
1001}
1002
1003/* Clear a line. */
1004static void
1005tty_clear_line(struct tty *tty, struct window_pane *wp, u_int py, u_int px,
1006 u_int nx, u_int bg)
1007{
1008 struct client *c = tty->client;
1009
1010 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1011
1012 /* Nothing to clear. */
1013 if (nx == 0)
1014 return;
1015
1016 /* If genuine BCE is available, can try escape sequences. */
1017 if (!tty_fake_bce(tty, wp, bg)) {
1018 /* Off the end of the line, use EL if available. */
1019 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1020 tty_cursor(tty, px, py);
1021 tty_putcode(tty, TTYC_EL);
1022 return;
1023 }
1024
1025 /* At the start of the line. Use EL1. */
1026 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1027 tty_cursor(tty, px + nx - 1, py);
1028 tty_putcode(tty, TTYC_EL1);
1029 return;
1030 }
1031
1032 /* Section of line. Use ECH if possible. */
1033 if (tty_term_has(tty->term, TTYC_ECH)) {
1034 tty_cursor(tty, px, py);
1035 tty_putcode1(tty, TTYC_ECH, nx);
1036 return;
1037 }
1038 }
1039
1040 /* Couldn't use an escape sequence, use spaces. */
1041 tty_cursor(tty, px, py);
1042 tty_repeat_space(tty, nx);
1043}
1044
1045/* Clear a line, adjusting to visible part of pane. */
1046static void
1047tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1048 u_int px, u_int nx, u_int bg)
1049{
1050 struct client *c = tty->client;
1051 u_int i, x, rx, ry;
1052
1053 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1054
1055 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1056 tty_clear_line(tty, ctx->wp, ry, x, rx, bg);
1057}
1058
1059/* Clamp area position to visible part of pane. */
1060static int
1061tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1062 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1063 u_int *ry)
1064{
1065 struct window_pane *wp = ctx->wp;
1066 u_int xoff = wp->xoff + px, yoff = wp->yoff + py;
1067
1068 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1069 return (0);
1070
1071 if (xoff >= ctx->ox && xoff + nx <= ctx->ox + ctx->sx) {
1072 /* All visible. */
1073 *i = 0;
1074 *x = ctx->xoff + px - ctx->ox;
1075 *rx = nx;
1076 } else if (xoff < ctx->ox && xoff + nx > ctx->ox + ctx->sx) {
1077 /* Both left and right not visible. */
1078 *i = ctx->ox;
1079 *x = 0;
1080 *rx = ctx->sx;
1081 } else if (xoff < ctx->ox) {
1082 /* Left not visible. */
1083 *i = ctx->ox - (ctx->xoff + px);
1084 *x = 0;
1085 *rx = nx - *i;
1086 } else {
1087 /* Right not visible. */
1088 *i = 0;
1089 *x = (ctx->xoff + px) - ctx->ox;
1090 *rx = ctx->sx - *x;
1091 }
1092 if (*rx > nx)
1093 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1094
1095 if (yoff >= ctx->oy && yoff + ny <= ctx->oy + ctx->sy) {
1096 /* All visible. */
1097 *j = 0;
1098 *y = ctx->yoff + py - ctx->oy;
1099 *ry = ny;
1100 } else if (yoff < ctx->oy && yoff + ny > ctx->oy + ctx->sy) {
1101 /* Both top and bottom not visible. */
1102 *j = ctx->oy;
1103 *y = 0;
1104 *ry = ctx->sy;
1105 } else if (yoff < ctx->oy) {
1106 /* Top not visible. */
1107 *j = ctx->oy - (ctx->yoff + py);
1108 *y = 0;
1109 *ry = ny - *j;
1110 } else {
1111 /* Bottom not visible. */
1112 *j = 0;
1113 *y = (ctx->yoff + py) - ctx->oy;
1114 *ry = ctx->sy - *y;
1115 }
1116 if (*ry > ny)
1117 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1118
1119 return (1);
1120}
1121
1122/* Clear an area, adjusting to visible part of pane. */
1123static void
1124tty_clear_area(struct tty *tty, struct window_pane *wp, u_int py, u_int ny,
1125 u_int px, u_int nx, u_int bg)
1126{
1127 struct client *c = tty->client;
1128 u_int yy;
1129 char tmp[64];
1130
1131 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1132
1133 /* Nothing to clear. */
1134 if (nx == 0 || ny == 0)
1135 return;
1136
1137 /* If genuine BCE is available, can try escape sequences. */
1138 if (!tty_fake_bce(tty, wp, bg)) {
1139 /* Use ED if clearing off the bottom of the terminal. */
1140 if (px == 0 &&
1141 px + nx >= tty->sx &&
1142 py + ny >= tty->sy &&
1143 tty_term_has(tty->term, TTYC_ED)) {
1144 tty_cursor(tty, 0, py);
1145 tty_putcode(tty, TTYC_ED);
1146 return;
1147 }
1148
1149 /*
1150 * On VT420 compatible terminals we can use DECFRA if the
1151 * background colour isn't default (because it doesn't work
1152 * after SGR 0).
1153 */
1154 if (((tty->term->flags|tty->term_flags) & TERM_DECFRA) &&
1155 !COLOUR_DEFAULT(bg)) {
1156 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1157 py + 1, px + 1, py + ny, px + nx);
1158 tty_puts(tty, tmp);
1159 return;
1160 }
1161
1162 /* Full lines can be scrolled away to clear them. */
1163 if (px == 0 &&
1164 px + nx >= tty->sx &&
1165 ny > 2 &&
1166 tty_term_has(tty->term, TTYC_CSR) &&
1167 tty_term_has(tty->term, TTYC_INDN)) {
1168 tty_region(tty, py, py + ny - 1);
1169 tty_margin_off(tty);
1170 tty_putcode1(tty, TTYC_INDN, ny);
1171 return;
1172 }
1173
1174 /*
1175 * If margins are supported, can just scroll the area off to
1176 * clear it.
1177 */
1178 if (nx > 2 &&
1179 ny > 2 &&
1180 tty_term_has(tty->term, TTYC_CSR) &&
1181 tty_use_margin(tty) &&
1182 tty_term_has(tty->term, TTYC_INDN)) {
1183 tty_region(tty, py, py + ny - 1);
1184 tty_margin(tty, px, px + nx - 1);
1185 tty_putcode1(tty, TTYC_INDN, ny);
1186 return;
1187 }
1188 }
1189
1190 /* Couldn't use an escape sequence, loop over the lines. */
1191 for (yy = py; yy < py + ny; yy++)
1192 tty_clear_line(tty, wp, yy, px, nx, bg);
1193}
1194
1195/* Clear an area in a pane. */
1196static void
1197tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1198 u_int ny, u_int px, u_int nx, u_int bg)
1199{
1200 u_int i, j, x, y, rx, ry;
1201
1202 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1203 tty_clear_area(tty, ctx->wp, y, ry, x, rx, bg);
1204}
1205
1206static void
1207tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1208{
1209 struct window_pane *wp = ctx->wp;
1210 struct screen *s = wp->screen;
1211 u_int nx = screen_size_x(s), i, x, rx, ry;
1212
1213 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1214
1215 if (!ctx->bigger) {
1216 tty_draw_line(tty, wp, s, 0, py, nx, ctx->xoff, ctx->yoff + py);
1217 return;
1218 }
1219 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry))
1220 tty_draw_line(tty, wp, s, i, py, rx, x, ry);
1221}
1222
1223static const struct grid_cell *
1224tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1225{
1226 static struct grid_cell new;
1227 u_int n;
1228
1229 /* Characters less than 0x7f are always fine, no matter what. */
1230 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1231 return (gc);
1232
1233 /* UTF-8 terminal and a UTF-8 character - fine. */
1234 if (tty->flags & TTY_UTF8)
1235 return (gc);
1236
1237 /* Replace by the right number of underscores. */
1238 n = gc->data.width;
1239 if (n > UTF8_SIZE)
1240 n = UTF8_SIZE;
1241 memcpy(&new, gc, sizeof new);
1242 new.data.size = n;
1243 memset(new.data.data, '_', n);
1244 return (&new);
1245}
1246
1247void
1248tty_draw_line(struct tty *tty, struct window_pane *wp, struct screen *s,
1249 u_int px, u_int py, u_int nx, u_int atx, u_int aty)
1250{
1251 struct grid *gd = s->grid;
1252 struct grid_cell gc, last;
1253 const struct grid_cell *gcp;
1254 struct grid_line *gl;
1255 u_int i, j, ux, sx, width;
1256 int flags, cleared = 0, wrapped = 0;
1257 char buf[512];
1258 size_t len;
1259 u_int cellsize;
1260
1261 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1262 px, py, nx, atx, aty);
1263
1264 /*
1265 * py is the line in the screen to draw.
1266 * px is the start x and nx is the width to draw.
1267 * atx,aty is the line on the terminal to draw it.
1268 */
1269
1270 flags = (tty->flags & TTY_NOCURSOR);
1271 tty->flags |= TTY_NOCURSOR;
1272 tty_update_mode(tty, tty->mode, s);
1273
1274 tty_region_off(tty);
1275 tty_margin_off(tty);
1276
1277 /*
1278 * Clamp the width to cellsize - note this is not cellused, because
1279 * there may be empty background cells after it (from BCE).
1280 */
1281 sx = screen_size_x(s);
1282 if (nx > sx)
1283 nx = sx;
1284 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1285 if (sx > cellsize)
1286 sx = cellsize;
1287 if (sx > tty->sx)
1288 sx = tty->sx;
1289 if (sx > nx)
1290 sx = nx;
1291 ux = 0;
1292
1293 if (py == 0)
1294 gl = NULL;
1295 else
1296 gl = grid_get_line(gd, gd->hsize + py - 1);
1297 if (wp == NULL ||
1298 gl == NULL ||
1299 (~gl->flags & GRID_LINE_WRAPPED) ||
1300 atx != 0 ||
1301 tty->cx < tty->sx ||
1302 nx < tty->sx) {
1303 if (nx < tty->sx &&
1304 atx == 0 &&
1305 px + sx != nx &&
1306 tty_term_has(tty->term, TTYC_EL1) &&
1307 !tty_fake_bce(tty, wp, 8)) {
1308 tty_default_attributes(tty, wp, 8);
1309 tty_cursor(tty, nx - 1, aty);
1310 tty_putcode(tty, TTYC_EL1);
1311 cleared = 1;
1312 }
1313 } else {
1314 log_debug("%s: wrapped line %u", __func__, aty);
1315 wrapped = 1;
1316 }
1317
1318 memcpy(&last, &grid_default_cell, sizeof last);
1319 len = 0;
1320 width = 0;
1321
1322 for (i = 0; i < sx; i++) {
1323 grid_view_get_cell(gd, px + i, py, &gc);
1324 gcp = tty_check_codeset(tty, &gc);
1325 if (len != 0 &&
1326 ((gcp->attr & GRID_ATTR_CHARSET) ||
1327 gcp->flags != last.flags ||
1328 gcp->attr != last.attr ||
1329 gcp->fg != last.fg ||
1330 gcp->bg != last.bg ||
1331 gcp->us != last.us ||
1332 ux + width + gcp->data.width > nx ||
1333 (sizeof buf) - len < gcp->data.size)) {
1334 tty_attributes(tty, &last, wp);
1335 if (last.flags & GRID_FLAG_CLEARED) {
1336 log_debug("%s: %zu cleared", __func__, len);
1337 tty_clear_line(tty, wp, aty, atx + ux, width,
1338 last.bg);
1339 } else {
1340 if (!wrapped || atx != 0 || ux != 0)
1341 tty_cursor(tty, atx + ux, aty);
1342 tty_putn(tty, buf, len, width);
1343 }
1344 ux += width;
1345
1346 len = 0;
1347 width = 0;
1348 wrapped = 0;
1349 }
1350
1351 if (gcp->flags & GRID_FLAG_SELECTED)
1352 screen_select_cell(s, &last, gcp);
1353 else
1354 memcpy(&last, gcp, sizeof last);
1355 if (ux + gcp->data.width > nx) {
1356 tty_attributes(tty, &last, wp);
1357 tty_cursor(tty, atx + ux, aty);
1358 for (j = 0; j < gcp->data.width; j++) {
1359 if (ux + j > nx)
1360 break;
1361 tty_putc(tty, ' ');
1362 ux++;
1363 }
1364 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1365 tty_attributes(tty, &last, wp);
1366 tty_cursor(tty, atx + ux, aty);
1367 for (j = 0; j < gcp->data.size; j++)
1368 tty_putc(tty, gcp->data.data[j]);
1369 ux += gc.data.width;
1370 } else {
1371 memcpy(buf + len, gcp->data.data, gcp->data.size);
1372 len += gcp->data.size;
1373 width += gcp->data.width;
1374 }
1375 }
1376 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1377 tty_attributes(tty, &last, wp);
1378 if (last.flags & GRID_FLAG_CLEARED) {
1379 log_debug("%s: %zu cleared (end)", __func__, len);
1380 tty_clear_line(tty, wp, aty, atx + ux, width, last.bg);
1381 } else {
1382 if (!wrapped || atx != 0 || ux != 0)
1383 tty_cursor(tty, atx + ux, aty);
1384 tty_putn(tty, buf, len, width);
1385 }
1386 ux += width;
1387 }
1388
1389 if (!cleared && ux < nx) {
1390 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1391 nx - ux, len);
1392 tty_default_attributes(tty, wp, 8);
1393 tty_clear_line(tty, wp, aty, atx + ux, nx - ux, 8);
1394 }
1395
1396 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1397 tty_update_mode(tty, tty->mode, s);
1398}
1399
1400static int
1401tty_client_ready(struct client *c, struct window_pane *wp)
1402{
1403 if (c->session == NULL || c->tty.term == NULL)
1404 return (0);
1405 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1406 return (0);
1407 if (c->tty.flags & TTY_FREEZE)
1408 return (0);
1409 if (c->session->curw->window != wp->window)
1410 return (0);
1411 if (wp->layout_cell == NULL)
1412 return (0);
1413 return (1);
1414}
1415
1416void
1417tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1418 struct tty_ctx *ctx)
1419{
1420 struct window_pane *wp = ctx->wp;
1421 struct client *c;
1422
1423 if (wp == NULL)
1424 return;
1425 if (wp->flags & (PANE_REDRAW|PANE_DROP))
1426 return;
1427
1428 TAILQ_FOREACH(c, &clients, entry) {
1429 if (!tty_client_ready(c, wp))
1430 continue;
1431
1432 ctx->bigger = tty_window_offset(&c->tty, &ctx->ox, &ctx->oy,
1433 &ctx->sx, &ctx->sy);
1434
1435 ctx->xoff = wp->xoff;
1436 ctx->yoff = wp->yoff;
1437
1438 if (status_at_line(c) == 0)
1439 ctx->yoff += status_line_size(c);
1440
1441 cmdfn(&c->tty, ctx);
1442 }
1443}
1444
1445void
1446tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1447{
1448 struct window_pane *wp = ctx->wp;
1449
1450 if (ctx->bigger ||
1451 !tty_pane_full_width(tty, ctx) ||
1452 tty_fake_bce(tty, wp, ctx->bg) ||
1453 (!tty_term_has(tty->term, TTYC_ICH) &&
1454 !tty_term_has(tty->term, TTYC_ICH1))) {
1455 tty_draw_pane(tty, ctx, ctx->ocy);
1456 return;
1457 }
1458
1459 tty_default_attributes(tty, wp, ctx->bg);
1460
1461 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1462
1463 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1464}
1465
1466void
1467tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1468{
1469 struct window_pane *wp = ctx->wp;
1470
1471 if (ctx->bigger ||
1472 !tty_pane_full_width(tty, ctx) ||
1473 tty_fake_bce(tty, wp, ctx->bg) ||
1474 (!tty_term_has(tty->term, TTYC_DCH) &&
1475 !tty_term_has(tty->term, TTYC_DCH1))) {
1476 tty_draw_pane(tty, ctx, ctx->ocy);
1477 return;
1478 }
1479
1480 tty_default_attributes(tty, wp, ctx->bg);
1481
1482 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1483
1484 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1485}
1486
1487void
1488tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1489{
1490 if (ctx->bigger) {
1491 tty_draw_pane(tty, ctx, ctx->ocy);
1492 return;
1493 }
1494
1495 tty_default_attributes(tty, ctx->wp, ctx->bg);
1496
1497 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1498
1499 if (tty_term_has(tty->term, TTYC_ECH) &&
1500 !tty_fake_bce(tty, ctx->wp, 8))
1501 tty_putcode1(tty, TTYC_ECH, ctx->num);
1502 else
1503 tty_repeat_space(tty, ctx->num);
1504}
1505
1506void
1507tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1508{
1509 if (ctx->bigger ||
1510 !tty_pane_full_width(tty, ctx) ||
1511 tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1512 !tty_term_has(tty->term, TTYC_CSR) ||
1513 !tty_term_has(tty->term, TTYC_IL1) ||
1514 ctx->wp->sx == 1 ||
1515 ctx->wp->sy == 1) {
1516 tty_redraw_region(tty, ctx);
1517 return;
1518 }
1519
1520 tty_default_attributes(tty, ctx->wp, ctx->bg);
1521
1522 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1523 tty_margin_off(tty);
1524 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1525
1526 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1527 tty->cx = tty->cy = UINT_MAX;
1528}
1529
1530void
1531tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1532{
1533 if (ctx->bigger ||
1534 !tty_pane_full_width(tty, ctx) ||
1535 tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1536 !tty_term_has(tty->term, TTYC_CSR) ||
1537 !tty_term_has(tty->term, TTYC_DL1) ||
1538 ctx->wp->sx == 1 ||
1539 ctx->wp->sy == 1) {
1540 tty_redraw_region(tty, ctx);
1541 return;
1542 }
1543
1544 tty_default_attributes(tty, ctx->wp, ctx->bg);
1545
1546 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1547 tty_margin_off(tty);
1548 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1549
1550 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1551 tty->cx = tty->cy = UINT_MAX;
1552}
1553
1554void
1555tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1556{
1557 struct window_pane *wp = ctx->wp;
1558 u_int nx;
1559
1560 tty_default_attributes(tty, wp, ctx->bg);
1561
1562 nx = screen_size_x(wp->screen);
1563 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, nx, ctx->bg);
1564}
1565
1566void
1567tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1568{
1569 struct window_pane *wp = ctx->wp;
1570 u_int nx;
1571
1572 tty_default_attributes(tty, wp, ctx->bg);
1573
1574 nx = screen_size_x(wp->screen) - ctx->ocx;
1575 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1576}
1577
1578void
1579tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1580{
1581 struct window_pane *wp = ctx->wp;
1582
1583 tty_default_attributes(tty, wp, ctx->bg);
1584
1585 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1586}
1587
1588void
1589tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1590{
1591 struct window_pane *wp = ctx->wp;
1592
1593 if (ctx->ocy != ctx->orupper)
1594 return;
1595
1596 if (ctx->bigger ||
1597 (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1598 tty_fake_bce(tty, wp, 8) ||
1599 !tty_term_has(tty->term, TTYC_CSR) ||
1600 (!tty_term_has(tty->term, TTYC_RI) &&
1601 !tty_term_has(tty->term, TTYC_RIN)) ||
1602 ctx->wp->sx == 1 ||
1603 ctx->wp->sy == 1) {
1604 tty_redraw_region(tty, ctx);
1605 return;
1606 }
1607
1608 tty_default_attributes(tty, wp, ctx->bg);
1609
1610 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1611 tty_margin_pane(tty, ctx);
1612 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1613
1614 if (tty_term_has(tty->term, TTYC_RI))
1615 tty_putcode(tty, TTYC_RI);
1616 else
1617 tty_putcode1(tty, TTYC_RIN, 1);
1618}
1619
1620void
1621tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1622{
1623 struct window_pane *wp = ctx->wp;
1624
1625 if (ctx->ocy != ctx->orlower)
1626 return;
1627
1628 if (ctx->bigger ||
1629 (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1630 tty_fake_bce(tty, wp, 8) ||
1631 !tty_term_has(tty->term, TTYC_CSR) ||
1632 wp->sx == 1 ||
1633 wp->sy == 1) {
1634 tty_redraw_region(tty, ctx);
1635 return;
1636 }
1637
1638 tty_default_attributes(tty, wp, ctx->bg);
1639
1640 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1641 tty_margin_pane(tty, ctx);
1642
1643 /*
1644 * If we want to wrap a pane while using margins, the cursor needs to
1645 * be exactly on the right of the region. If the cursor is entirely off
1646 * the edge - move it back to the right. Some terminals are funny about
1647 * this and insert extra spaces, so only use the right if margins are
1648 * enabled.
1649 */
1650 if (ctx->xoff + ctx->ocx > tty->rright) {
1651 if (!tty_use_margin(tty))
1652 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1653 else
1654 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1655 } else
1656 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1657
1658 tty_putc(tty, '\n');
1659}
1660
1661void
1662tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1663{
1664 struct window_pane *wp = ctx->wp;
1665 u_int i;
1666
1667 if (ctx->bigger ||
1668 (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1669 tty_fake_bce(tty, wp, 8) ||
1670 !tty_term_has(tty->term, TTYC_CSR) ||
1671 wp->sx == 1 ||
1672 wp->sy == 1) {
1673 tty_redraw_region(tty, ctx);
1674 return;
1675 }
1676
1677 tty_default_attributes(tty, wp, ctx->bg);
1678
1679 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1680 tty_margin_pane(tty, ctx);
1681
1682 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1683 if (!tty_use_margin(tty))
1684 tty_cursor(tty, 0, tty->rlower);
1685 else
1686 tty_cursor(tty, tty->rright, tty->rlower);
1687 for (i = 0; i < ctx->num; i++)
1688 tty_putc(tty, '\n');
1689 } else {
1690 tty_cursor(tty, 0, tty->cy);
1691 tty_putcode1(tty, TTYC_INDN, ctx->num);
1692 }
1693}
1694
1695void
1696tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1697{
1698 struct window_pane *wp = ctx->wp;
1699 u_int i;
1700
1701 if (ctx->bigger ||
1702 (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1703 tty_fake_bce(tty, wp, 8) ||
1704 !tty_term_has(tty->term, TTYC_CSR) ||
1705 (!tty_term_has(tty->term, TTYC_RI) &&
1706 !tty_term_has(tty->term, TTYC_RIN)) ||
1707 wp->sx == 1 ||
1708 wp->sy == 1) {
1709 tty_redraw_region(tty, ctx);
1710 return;
1711 }
1712
1713 tty_default_attributes(tty, wp, ctx->bg);
1714
1715 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1716 tty_margin_pane(tty, ctx);
1717 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1718
1719 if (tty_term_has(tty->term, TTYC_RIN))
1720 tty_putcode1(tty, TTYC_RIN, ctx->num);
1721 else {
1722 for (i = 0; i < ctx->num; i++)
1723 tty_putcode(tty, TTYC_RI);
1724 }
1725}
1726
1727void
1728tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1729{
1730 struct window_pane *wp = ctx->wp;
1731 u_int px, py, nx, ny;
1732
1733 tty_default_attributes(tty, wp, ctx->bg);
1734
1735 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1736 tty_margin_off(tty);
1737
1738 px = 0;
1739 nx = screen_size_x(wp->screen);
1740 py = ctx->ocy + 1;
1741 ny = screen_size_y(wp->screen) - ctx->ocy - 1;
1742
1743 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1744
1745 px = ctx->ocx;
1746 nx = screen_size_x(wp->screen) - ctx->ocx;
1747 py = ctx->ocy;
1748
1749 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1750}
1751
1752void
1753tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1754{
1755 struct window_pane *wp = ctx->wp;
1756 u_int px, py, nx, ny;
1757
1758 tty_default_attributes(tty, wp, ctx->bg);
1759
1760 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1761 tty_margin_off(tty);
1762
1763 px = 0;
1764 nx = screen_size_x(wp->screen);
1765 py = 0;
1766 ny = ctx->ocy;
1767
1768 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1769
1770 px = 0;
1771 nx = ctx->ocx + 1;
1772 py = ctx->ocy;
1773
1774 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1775}
1776
1777void
1778tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1779{
1780 struct window_pane *wp = ctx->wp;
1781 u_int px, py, nx, ny;
1782
1783 tty_default_attributes(tty, wp, ctx->bg);
1784
1785 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1786 tty_margin_off(tty);
1787
1788 px = 0;
1789 nx = screen_size_x(wp->screen);
1790 py = 0;
1791 ny = screen_size_y(wp->screen);
1792
1793 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1794}
1795
1796void
1797tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1798{
1799 struct window_pane *wp = ctx->wp;
1800 struct screen *s = wp->screen;
1801 u_int i, j;
1802
1803 if (ctx->bigger) {
1804 wp->flags |= PANE_REDRAW;
1805 return;
1806 }
1807
1808 tty_attributes(tty, &grid_default_cell, wp);
1809
1810 tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
1811 tty_margin_off(tty);
1812
1813 for (j = 0; j < screen_size_y(s); j++) {
1814 tty_cursor_pane(tty, ctx, 0, j);
1815 for (i = 0; i < screen_size_x(s); i++)
1816 tty_putc(tty, 'E');
1817 }
1818}
1819
1820void
1821tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1822{
1823 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1))
1824 return;
1825
1826 if (ctx->xoff + ctx->ocx - ctx->ox > tty->sx - 1 &&
1827 ctx->ocy == ctx->orlower &&
1828 tty_pane_full_width(tty, ctx))
1829 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1830
1831 tty_margin_off(tty);
1832 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1833
1834 tty_cell(tty, ctx->cell, ctx->wp);
1835}
1836
1837void
1838tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
1839{
1840 struct window_pane *wp = ctx->wp;
1841
1842 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
1843 return;
1844
1845 if (ctx->bigger &&
1846 (ctx->xoff + ctx->ocx < ctx->ox ||
1847 ctx->xoff + ctx->ocx + ctx->num > ctx->ox + ctx->sx)) {
1848 if (!ctx->wrapped ||
1849 !tty_pane_full_width(tty, ctx) ||
1850 (tty->term->flags & TERM_NOXENL) ||
1851 ctx->xoff + ctx->ocx != 0 ||
1852 ctx->yoff + ctx->ocy != tty->cy + 1 ||
1853 tty->cx < tty->sx ||
1854 tty->cy == tty->rlower)
1855 tty_draw_pane(tty, ctx, ctx->ocy);
1856 else
1857 wp->flags |= PANE_REDRAW;
1858 return;
1859 }
1860
1861 tty_margin_off(tty);
1862 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1863
1864 tty_attributes(tty, ctx->cell, ctx->wp);
1865 tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
1866}
1867
1868void
1869tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
1870{
1871 char *buf;
1872 size_t off;
1873
1874 if (!tty_term_has(tty->term, TTYC_MS))
1875 return;
1876
1877 off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
1878 buf = xmalloc(off);
1879
1880 b64_ntop(ctx->ptr, ctx->num, buf, off);
1881 tty_putcode_ptr2(tty, TTYC_MS, "", buf);
1882
1883 free(buf);
1884}
1885
1886void
1887tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
1888{
1889 tty_add(tty, ctx->ptr, ctx->num);
1890 tty_invalidate(tty);
1891}
1892
1893static void
1894tty_cell(struct tty *tty, const struct grid_cell *gc, struct window_pane *wp)
1895{
1896 const struct grid_cell *gcp;
1897
1898 /* Skip last character if terminal is stupid. */
1899 if ((tty->term->flags & TERM_NOXENL) &&
1900 tty->cy == tty->sy - 1 &&
1901 tty->cx == tty->sx - 1)
1902 return;
1903
1904 /* If this is a padding character, do nothing. */
1905 if (gc->flags & GRID_FLAG_PADDING)
1906 return;
1907
1908 /* Set the attributes. */
1909 tty_attributes(tty, gc, wp);
1910
1911 /* Get the cell and if ASCII write with putc to do ACS translation. */
1912 gcp = tty_check_codeset(tty, gc);
1913 if (gcp->data.size == 1) {
1914 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
1915 return;
1916 tty_putc(tty, *gcp->data.data);
1917 return;
1918 }
1919
1920 /* Write the data. */
1921 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
1922}
1923
1924void
1925tty_reset(struct tty *tty)
1926{
1927 struct grid_cell *gc = &tty->cell;
1928
1929 if (!grid_cells_equal(gc, &grid_default_cell)) {
1930 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
1931 tty_putcode(tty, TTYC_RMACS);
1932 tty_putcode(tty, TTYC_SGR0);
1933 memcpy(gc, &grid_default_cell, sizeof *gc);
1934 }
1935
1936 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
1937 tty->last_wp = -1;
1938}
1939
1940static void
1941tty_invalidate(struct tty *tty)
1942{
1943 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
1944
1945 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
1946 tty->last_wp = -1;
1947
1948 tty->cx = tty->cy = UINT_MAX;
1949
1950 tty->rupper = tty->rleft = UINT_MAX;
1951 tty->rlower = tty->rright = UINT_MAX;
1952
1953 if (tty->flags & TTY_STARTED) {
1954 if (tty_use_margin(tty))
1955 tty_puts(tty, "\033[?69h"); /* DECLRMM */
1956 tty_putcode(tty, TTYC_SGR0);
1957
1958 tty->mode = ALL_MODES;
1959 tty_update_mode(tty, MODE_CURSOR, NULL);
1960
1961 tty_cursor(tty, 0, 0);
1962 tty_region_off(tty);
1963 tty_margin_off(tty);
1964 } else
1965 tty->mode = MODE_CURSOR;
1966}
1967
1968/* Turn off margin. */
1969void
1970tty_region_off(struct tty *tty)
1971{
1972 tty_region(tty, 0, tty->sy - 1);
1973}
1974
1975/* Set region inside pane. */
1976static void
1977tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
1978 u_int rlower)
1979{
1980 tty_region(tty, ctx->yoff + rupper - ctx->oy,
1981 ctx->yoff + rlower - ctx->oy);
1982}
1983
1984/* Set region at absolute position. */
1985static void
1986tty_region(struct tty *tty, u_int rupper, u_int rlower)
1987{
1988 if (tty->rlower == rlower && tty->rupper == rupper)
1989 return;
1990 if (!tty_term_has(tty->term, TTYC_CSR))
1991 return;
1992
1993 tty->rupper = rupper;
1994 tty->rlower = rlower;
1995
1996 /*
1997 * Some terminals (such as PuTTY) do not correctly reset the cursor to
1998 * 0,0 if it is beyond the last column (they do not reset their wrap
1999 * flag so further output causes a line feed). As a workaround, do an
2000 * explicit move to 0 first.
2001 */
2002 if (tty->cx >= tty->sx)
2003 tty_cursor(tty, 0, tty->cy);
2004
2005 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2006 tty->cx = tty->cy = UINT_MAX;
2007}
2008
2009/* Turn off margin. */
2010void
2011tty_margin_off(struct tty *tty)
2012{
2013 tty_margin(tty, 0, tty->sx - 1);
2014}
2015
2016/* Set margin inside pane. */
2017static void
2018tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2019{
2020 tty_margin(tty, ctx->xoff - ctx->ox,
2021 ctx->xoff + ctx->wp->sx - 1 - ctx->ox);
2022}
2023
2024/* Set margin at absolute position. */
2025static void
2026tty_margin(struct tty *tty, u_int rleft, u_int rright)
2027{
2028 char s[64];
2029
2030 if (!tty_use_margin(tty))
2031 return;
2032 if (tty->rleft == rleft && tty->rright == rright)
2033 return;
2034
2035 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2036
2037 tty->rleft = rleft;
2038 tty->rright = rright;
2039
2040 if (rleft == 0 && rright == tty->sx - 1)
2041 snprintf(s, sizeof s, "\033[s");
2042 else
2043 snprintf(s, sizeof s, "\033[%u;%us", rleft + 1, rright + 1);
2044 tty_puts(tty, s);
2045 tty->cx = tty->cy = UINT_MAX;
2046}
2047
2048/*
2049 * Move the cursor, unless it would wrap itself when the next character is
2050 * printed.
2051 */
2052static void
2053tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2054 u_int cx, u_int cy)
2055{
2056 if (!ctx->wrapped ||
2057 !tty_pane_full_width(tty, ctx) ||
2058 (tty->term->flags & TERM_NOXENL) ||
2059 ctx->xoff + cx != 0 ||
2060 ctx->yoff + cy != tty->cy + 1 ||
2061 tty->cx < tty->sx ||
2062 tty->cy == tty->rlower)
2063 tty_cursor_pane(tty, ctx, cx, cy);
2064 else
2065 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2066}
2067
2068/* Move cursor inside pane. */
2069static void
2070tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2071{
2072 tty_cursor(tty, ctx->xoff + cx - ctx->ox, ctx->yoff + cy - ctx->oy);
2073}
2074
2075/* Move cursor to absolute position. */
2076void
2077tty_cursor(struct tty *tty, u_int cx, u_int cy)
2078{
2079 struct tty_term *term = tty->term;
2080 u_int thisx, thisy;
2081 int change;
2082
2083 if (cx > tty->sx - 1)
2084 cx = tty->sx - 1;
2085
2086 thisx = tty->cx;
2087 thisy = tty->cy;
2088
2089 /* No change. */
2090 if (cx == thisx && cy == thisy)
2091 return;
2092
2093 /* Very end of the line, just use absolute movement. */
2094 if (thisx > tty->sx - 1)
2095 goto absolute;
2096
2097 /* Move to home position (0, 0). */
2098 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2099 tty_putcode(tty, TTYC_HOME);
2100 goto out;
2101 }
2102
2103 /* Zero on the next line. */
2104 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2105 (!tty_use_margin(tty) || tty->rleft == 0)) {
2106 tty_putc(tty, '\r');
2107 tty_putc(tty, '\n');
2108 goto out;
2109 }
2110
2111 /* Moving column or row. */
2112 if (cy == thisy) {
2113 /*
2114 * Moving column only, row staying the same.
2115 */
2116
2117 /* To left edge. */
2118 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2119 tty_putc(tty, '\r');
2120 goto out;
2121 }
2122
2123 /* One to the left. */
2124 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2125 tty_putcode(tty, TTYC_CUB1);
2126 goto out;
2127 }
2128
2129 /* One to the right. */
2130 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2131 tty_putcode(tty, TTYC_CUF1);
2132 goto out;
2133 }
2134
2135 /* Calculate difference. */
2136 change = thisx - cx; /* +ve left, -ve right */
2137
2138 /*
2139 * Use HPA if change is larger than absolute, otherwise move
2140 * the cursor with CUB/CUF.
2141 */
2142 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2143 tty_putcode1(tty, TTYC_HPA, cx);
2144 goto out;
2145 } else if (change > 0 &&
2146 tty_term_has(term, TTYC_CUB) &&
2147 !tty_use_margin(tty)) {
2148 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2149 tty_putcode(tty, TTYC_CUB1);
2150 tty_putcode(tty, TTYC_CUB1);
2151 goto out;
2152 }
2153 tty_putcode1(tty, TTYC_CUB, change);
2154 goto out;
2155 } else if (change < 0 &&
2156 tty_term_has(term, TTYC_CUF) &&
2157 !tty_use_margin(tty)) {
2158 tty_putcode1(tty, TTYC_CUF, -change);
2159 goto out;
2160 }
2161 } else if (cx == thisx) {
2162 /*
2163 * Moving row only, column staying the same.
2164 */
2165
2166 /* One above. */
2167 if (thisy != tty->rupper &&
2168 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2169 tty_putcode(tty, TTYC_CUU1);
2170 goto out;
2171 }
2172
2173 /* One below. */
2174 if (thisy != tty->rlower &&
2175 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2176 tty_putcode(tty, TTYC_CUD1);
2177 goto out;
2178 }
2179
2180 /* Calculate difference. */
2181 change = thisy - cy; /* +ve up, -ve down */
2182
2183 /*
2184 * Try to use VPA if change is larger than absolute or if this
2185 * change would cross the scroll region, otherwise use CUU/CUD.
2186 */
2187 if ((u_int) abs(change) > cy ||
2188 (change < 0 && cy - change > tty->rlower) ||
2189 (change > 0 && cy - change < tty->rupper)) {
2190 if (tty_term_has(term, TTYC_VPA)) {
2191 tty_putcode1(tty, TTYC_VPA, cy);
2192 goto out;
2193 }
2194 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2195 tty_putcode1(tty, TTYC_CUU, change);
2196 goto out;
2197 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2198 tty_putcode1(tty, TTYC_CUD, -change);
2199 goto out;
2200 }
2201 }
2202
2203absolute:
2204 /* Absolute movement. */
2205 tty_putcode2(tty, TTYC_CUP, cy, cx);
2206
2207out:
2208 tty->cx = cx;
2209 tty->cy = cy;
2210}
2211
2212void
2213tty_attributes(struct tty *tty, const struct grid_cell *gc,
2214 struct window_pane *wp)
2215{
2216 struct grid_cell *tc = &tty->cell, gc2;
2217 int changed;
2218
2219 /* Ignore cell if it is the same as the last one. */
2220 if (wp != NULL &&
2221 (int)wp->id == tty->last_wp &&
2222 ~(wp->flags & PANE_STYLECHANGED) &&
2223 gc->attr == tty->last_cell.attr &&
2224 gc->fg == tty->last_cell.fg &&
2225 gc->bg == tty->last_cell.bg &&
2226 gc->us == tty->last_cell.us)
2227 return;
2228 tty->last_wp = (wp != NULL ? (int)wp->id : -1);
2229 memcpy(&tty->last_cell, gc, sizeof tty->last_cell);
2230
2231 /* Copy cell and update default colours. */
2232 memcpy(&gc2, gc, sizeof gc2);
2233 if (wp != NULL)
2234 tty_default_colours(&gc2, wp);
2235
2236 /*
2237 * If no setab, try to use the reverse attribute as a best-effort for a
2238 * non-default background. This is a bit of a hack but it doesn't do
2239 * any serious harm and makes a couple of applications happier.
2240 */
2241 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2242 if (gc2.attr & GRID_ATTR_REVERSE) {
2243 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2244 gc2.attr &= ~GRID_ATTR_REVERSE;
2245 } else {
2246 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2247 gc2.attr |= GRID_ATTR_REVERSE;
2248 }
2249 }
2250
2251 /* Fix up the colours if necessary. */
2252 tty_check_fg(tty, wp, &gc2);
2253 tty_check_bg(tty, wp, &gc2);
2254 tty_check_us(tty, wp, &gc2);
2255
2256 /*
2257 * If any bits are being cleared or the underline colour is now default,
2258 * reset everything.
2259 */
2260 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2261 tty_reset(tty);
2262
2263 /*
2264 * Set the colours. This may call tty_reset() (so it comes next) and
2265 * may add to (NOT remove) the desired attributes.
2266 */
2267 tty_colours(tty, &gc2);
2268
2269 /* Filter out attribute bits already set. */
2270 changed = gc2.attr & ~tc->attr;
2271 tc->attr = gc2.attr;
2272
2273 /* Set the attributes. */
2274 if (changed & GRID_ATTR_BRIGHT)
2275 tty_putcode(tty, TTYC_BOLD);
2276 if (changed & GRID_ATTR_DIM)
2277 tty_putcode(tty, TTYC_DIM);
2278 if (changed & GRID_ATTR_ITALICS)
2279 tty_set_italics(tty);
2280 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2281 if ((changed & GRID_ATTR_UNDERSCORE) ||
2282 !tty_term_has(tty->term, TTYC_SMULX))
2283 tty_putcode(tty, TTYC_SMUL);
2284 else if (changed & GRID_ATTR_UNDERSCORE_2)
2285 tty_putcode1(tty, TTYC_SMULX, 2);
2286 else if (changed & GRID_ATTR_UNDERSCORE_3)
2287 tty_putcode1(tty, TTYC_SMULX, 3);
2288 else if (changed & GRID_ATTR_UNDERSCORE_4)
2289 tty_putcode1(tty, TTYC_SMULX, 4);
2290 else if (changed & GRID_ATTR_UNDERSCORE_5)
2291 tty_putcode1(tty, TTYC_SMULX, 5);
2292 }
2293 if (changed & GRID_ATTR_BLINK)
2294 tty_putcode(tty, TTYC_BLINK);
2295 if (changed & GRID_ATTR_REVERSE) {
2296 if (tty_term_has(tty->term, TTYC_REV))
2297 tty_putcode(tty, TTYC_REV);
2298 else if (tty_term_has(tty->term, TTYC_SMSO))
2299 tty_putcode(tty, TTYC_SMSO);
2300 }
2301 if (changed & GRID_ATTR_HIDDEN)
2302 tty_putcode(tty, TTYC_INVIS);
2303 if (changed & GRID_ATTR_STRIKETHROUGH)
2304 tty_putcode(tty, TTYC_SMXX);
2305 if (changed & GRID_ATTR_OVERLINE)
2306 tty_putcode(tty, TTYC_SMOL);
2307 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2308 tty_putcode(tty, TTYC_SMACS);
2309}
2310
2311static void
2312tty_colours(struct tty *tty, const struct grid_cell *gc)
2313{
2314 struct grid_cell *tc = &tty->cell;
2315 int have_ax;
2316
2317 /* No changes? Nothing is necessary. */
2318 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2319 return;
2320
2321 /*
2322 * Is either the default colour? This is handled specially because the
2323 * best solution might be to reset both colours to default, in which
2324 * case if only one is default need to fall onward to set the other
2325 * colour.
2326 */
2327 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2328 /*
2329 * If don't have AX but do have op, send sgr0 (op can't
2330 * actually be used because it is sometimes the same as sgr0
2331 * and sometimes isn't). This resets both colours to default.
2332 *
2333 * Otherwise, try to set the default colour only as needed.
2334 */
2335 have_ax = tty_term_flag(tty->term, TTYC_AX);
2336 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2337 tty_reset(tty);
2338 else {
2339 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2340 if (have_ax)
2341 tty_puts(tty, "\033[39m");
2342 else if (tc->fg != 7)
2343 tty_putcode1(tty, TTYC_SETAF, 7);
2344 tc->fg = gc->fg;
2345 }
2346 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2347 if (have_ax)
2348 tty_puts(tty, "\033[49m");
2349 else if (tc->bg != 0)
2350 tty_putcode1(tty, TTYC_SETAB, 0);
2351 tc->bg = gc->bg;
2352 }
2353 }
2354 }
2355
2356 /* Set the foreground colour. */
2357 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2358 tty_colours_fg(tty, gc);
2359
2360 /*
2361 * Set the background colour. This must come after the foreground as
2362 * tty_colour_fg() can call tty_reset().
2363 */
2364 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2365 tty_colours_bg(tty, gc);
2366
2367 /* Set the underscore color. */
2368 if (gc->us != tc->us)
2369 tty_colours_us(tty, gc);
2370}
2371
2372static void
2373tty_check_fg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
2374{
2375 u_char r, g, b;
2376 u_int colours;
2377 int c;
2378
2379 /*
2380 * Perform substitution if this pane has a palette. If the bright
2381 * attribute is set, use the bright entry in the palette by changing to
2382 * the aixterm colour.
2383 */
2384 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2385 c = gc->fg;
2386 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT)
2387 c += 90;
2388 if ((c = window_pane_get_palette(wp, c)) != -1)
2389 gc->fg = c;
2390 }
2391
2392 /* Is this a 24-bit colour? */
2393 if (gc->fg & COLOUR_FLAG_RGB) {
2394 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2395 if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
2396 return;
2397 colour_split_rgb(gc->fg, &r, &g, &b);
2398 gc->fg = colour_find_rgb(r, g, b);
2399 }
2400
2401 /* How many colours does this terminal have? */
2402 if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
2403 colours = 256;
2404 else
2405 colours = tty_term_number(tty->term, TTYC_COLORS);
2406
2407 /* Is this a 256-colour colour? */
2408 if (gc->fg & COLOUR_FLAG_256) {
2409 /* And not a 256 colour mode? */
2410 if (colours != 256) {
2411 gc->fg = colour_256to16(gc->fg);
2412 if (gc->fg & 8) {
2413 gc->fg &= 7;
2414 if (colours >= 16)
2415 gc->fg += 90;
2416 }
2417 }
2418 return;
2419 }
2420
2421 /* Is this an aixterm colour? */
2422 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2423 gc->fg -= 90;
2424 gc->attr |= GRID_ATTR_BRIGHT;
2425 }
2426}
2427
2428static void
2429tty_check_bg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
2430{
2431 u_char r, g, b;
2432 u_int colours;
2433 int c;
2434
2435 /* Perform substitution if this pane has a palette. */
2436 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2437 if ((c = window_pane_get_palette(wp, gc->bg)) != -1)
2438 gc->bg = c;
2439 }
2440
2441 /* Is this a 24-bit colour? */
2442 if (gc->bg & COLOUR_FLAG_RGB) {
2443 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2444 if ((tty->term->flags|tty->term_flags) & TERM_RGBCOLOURS)
2445 return;
2446 colour_split_rgb(gc->bg, &r, &g, &b);
2447 gc->bg = colour_find_rgb(r, g, b);
2448 }
2449
2450 /* How many colours does this terminal have? */
2451 if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
2452 colours = 256;
2453 else
2454 colours = tty_term_number(tty->term, TTYC_COLORS);
2455
2456 /* Is this a 256-colour colour? */
2457 if (gc->bg & COLOUR_FLAG_256) {
2458 /*
2459 * And not a 256 colour mode? Translate to 16-colour
2460 * palette. Bold background doesn't exist portably, so just
2461 * discard the bold bit if set.
2462 */
2463 if (colours != 256) {
2464 gc->bg = colour_256to16(gc->bg);
2465 if (gc->bg & 8) {
2466 gc->bg &= 7;
2467 if (colours >= 16)
2468 gc->bg += 90;
2469 }
2470 }
2471 return;
2472 }
2473
2474 /* Is this an aixterm colour? */
2475 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2476 gc->bg -= 90;
2477}
2478
2479static void
2480tty_check_us(__unused struct tty *tty, struct window_pane *wp,
2481 struct grid_cell *gc)
2482{
2483 int c;
2484
2485 /* Perform substitution if this pane has a palette. */
2486 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2487 if ((c = window_pane_get_palette(wp, gc->us)) != -1)
2488 gc->us = c;
2489 }
2490
2491 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2492 if (gc->us & COLOUR_FLAG_256)
2493 gc->us = colour_256toRGB (gc->us);
2494}
2495
2496static void
2497tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2498{
2499 struct grid_cell *tc = &tty->cell;
2500 char s[32];
2501
2502 /* Is this a 24-bit or 256-colour colour? */
2503 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2504 if (tty_try_colour(tty, gc->fg, "38") == 0)
2505 goto save_fg;
2506 /* Should not get here, already converted in tty_check_fg. */
2507 return;
2508 }
2509
2510 /* Is this an aixterm bright colour? */
2511 if (gc->fg >= 90 && gc->fg <= 97) {
2512 if (tty->term_flags & TERM_256COLOURS) {
2513 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2514 tty_puts(tty, s);
2515 } else
2516 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2517 goto save_fg;
2518 }
2519
2520 /* Otherwise set the foreground colour. */
2521 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2522
2523save_fg:
2524 /* Save the new values in the terminal current cell. */
2525 tc->fg = gc->fg;
2526}
2527
2528static void
2529tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2530{
2531 struct grid_cell *tc = &tty->cell;
2532 char s[32];
2533
2534 /* Is this a 24-bit or 256-colour colour? */
2535 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2536 if (tty_try_colour(tty, gc->bg, "48") == 0)
2537 goto save_bg;
2538 /* Should not get here, already converted in tty_check_bg. */
2539 return;
2540 }
2541
2542 /* Is this an aixterm bright colour? */
2543 if (gc->bg >= 90 && gc->bg <= 97) {
2544 if (tty->term_flags & TERM_256COLOURS) {
2545 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2546 tty_puts(tty, s);
2547 } else
2548 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2549 goto save_bg;
2550 }
2551
2552 /* Otherwise set the background colour. */
2553 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2554
2555save_bg:
2556 /* Save the new values in the terminal current cell. */
2557 tc->bg = gc->bg;
2558}
2559
2560static void
2561tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2562{
2563 struct grid_cell *tc = &tty->cell;
2564 u_int c;
2565 u_char r, g, b;
2566
2567 /* Must be an RGB colour - this should never happen. */
2568 if (~gc->us & COLOUR_FLAG_RGB)
2569 return;
2570
2571 /*
2572 * Setulc follows the ncurses(3) one argument "direct colour"
2573 * capability format. Calculate the colour value.
2574 */
2575 colour_split_rgb(gc->us, &r, &g, &b);
2576 c = (65536 * r) + (256 * g) + b;
2577
2578 /* Write the colour. */
2579 tty_putcode1(tty, TTYC_SETULC, c);
2580
2581 /* Save the new values in the terminal current cell. */
2582 tc->us = gc->us;
2583}
2584
2585static int
2586tty_try_colour(struct tty *tty, int colour, const char *type)
2587{
2588 u_char r, g, b;
2589 char s[32];
2590
2591 if (colour & COLOUR_FLAG_256) {
2592 /*
2593 * If the user has specified -2 to the client (meaning
2594 * TERM_256COLOURS is set), setaf and setab may not work (or
2595 * they may not want to use them), so send the usual sequence.
2596 *
2597 * Also if RGB is set, setaf and setab do not support the 256
2598 * colour palette so use the sequences directly there too.
2599 */
2600 if ((tty->term_flags & TERM_256COLOURS) ||
2601 tty_term_has(tty->term, TTYC_RGB))
2602 goto fallback_256;
2603
2604 /*
2605 * If the terminfo entry has 256 colours and setaf and setab
2606 * exist, assume that they work correctly.
2607 */
2608 if (tty->term->flags & TERM_256COLOURS) {
2609 if (*type == '3') {
2610 if (!tty_term_has(tty->term, TTYC_SETAF))
2611 goto fallback_256;
2612 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2613 } else {
2614 if (!tty_term_has(tty->term, TTYC_SETAB))
2615 goto fallback_256;
2616 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2617 }
2618 return (0);
2619 }
2620 goto fallback_256;
2621 }
2622
2623 if (colour & COLOUR_FLAG_RGB) {
2624 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2625 if (*type == '3') {
2626 if (!tty_term_has(tty->term, TTYC_SETRGBF))
2627 goto fallback_rgb;
2628 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2629 } else {
2630 if (!tty_term_has(tty->term, TTYC_SETRGBB))
2631 goto fallback_rgb;
2632 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2633 }
2634 return (0);
2635 }
2636
2637 return (-1);
2638
2639fallback_256:
2640 xsnprintf(s, sizeof s, "\033[%s;5;%dm", type, colour & 0xff);
2641 log_debug("%s: 256 colour fallback: %s", tty->client->name, s);
2642 tty_puts(tty, s);
2643 return (0);
2644
2645fallback_rgb:
2646 xsnprintf(s, sizeof s, "\033[%s;2;%d;%d;%dm", type, r, g, b);
2647 log_debug("%s: RGB colour fallback: %s", tty->client->name, s);
2648 tty_puts(tty, s);
2649 return (0);
2650}
2651
2652static void
2653tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2654{
2655 struct options *oo = wp->options;
2656 struct style *style, *active_style;
2657 int c;
2658
2659 if (wp->flags & PANE_STYLECHANGED) {
2660 wp->flags &= ~PANE_STYLECHANGED;
2661
2662 active_style = options_get_style(oo, "window-active-style");
2663 style = options_get_style(oo, "window-style");
2664
2665 style_copy(&wp->cached_active_style, active_style);
2666 style_copy(&wp->cached_style, style);
2667 } else {
2668 active_style = &wp->cached_active_style;
2669 style = &wp->cached_style;
2670 }
2671
2672 if (gc->fg == 8) {
2673 if (wp == wp->window->active && active_style->gc.fg != 8)
2674 gc->fg = active_style->gc.fg;
2675 else
2676 gc->fg = style->gc.fg;
2677
2678 if (gc->fg != 8) {
2679 c = window_pane_get_palette(wp, gc->fg);
2680 if (c != -1)
2681 gc->fg = c;
2682 }
2683 }
2684
2685 if (gc->bg == 8) {
2686 if (wp == wp->window->active && active_style->gc.bg != 8)
2687 gc->bg = active_style->gc.bg;
2688 else
2689 gc->bg = style->gc.bg;
2690
2691 if (gc->bg != 8) {
2692 c = window_pane_get_palette(wp, gc->bg);
2693 if (c != -1)
2694 gc->bg = c;
2695 }
2696 }
2697}
2698
2699static void
2700tty_default_attributes(struct tty *tty, struct window_pane *wp, u_int bg)
2701{
2702 static struct grid_cell gc;
2703
2704 memcpy(&gc, &grid_default_cell, sizeof gc);
2705 gc.bg = bg;
2706 tty_attributes(tty, &gc, wp);
2707}
2708