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Merge branch 'obsd-master'
[tmux.git] / tty.c
blobf6d5618e810a01ca6c24a8268b98284da45aa211
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
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 <time.h>
32 #include <unistd.h>
33
34 #include "tmux.h"
35
36 static int tty_log_fd = -1;
37
38 static void tty_set_italics(struct tty *);
39 static int tty_try_colour(struct tty *, int, const char *);
40 static void tty_force_cursor_colour(struct tty *, int);
41 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
42 u_int);
43 static void tty_cursor_pane_unless_wrap(struct tty *,
44 const struct tty_ctx *, u_int, u_int);
45 static void tty_invalidate(struct tty *);
46 static void tty_colours(struct tty *, const struct grid_cell *);
47 static void tty_check_fg(struct tty *, struct colour_palette *,
48 struct grid_cell *);
49 static void tty_check_bg(struct tty *, struct colour_palette *,
50 struct grid_cell *);
51 static void tty_check_us(struct tty *, struct colour_palette *,
52 struct grid_cell *);
53 static void tty_colours_fg(struct tty *, const struct grid_cell *);
54 static void tty_colours_bg(struct tty *, const struct grid_cell *);
55 static void tty_colours_us(struct tty *, const struct grid_cell *);
56
57 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
58 u_int);
59 static void tty_region(struct tty *, u_int, u_int);
60 static void tty_margin_pane(struct tty *, const struct tty_ctx *);
61 static void tty_margin(struct tty *, u_int, u_int);
62 static int tty_large_region(struct tty *, const struct tty_ctx *);
63 static int tty_fake_bce(const struct tty *, const struct grid_cell *,
64 u_int);
65 static void tty_redraw_region(struct tty *, const struct tty_ctx *);
66 static void tty_emulate_repeat(struct tty *, enum tty_code_code,
67 enum tty_code_code, u_int);
68 static void tty_repeat_space(struct tty *, u_int);
69 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
70 static void tty_default_attributes(struct tty *, const struct grid_cell *,
71 struct colour_palette *, u_int, struct hyperlinks *);
72 static int tty_check_overlay(struct tty *, u_int, u_int);
73 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
74 struct overlay_ranges *);
75
76 #ifdef ENABLE_SIXEL
77 static void tty_write_one(void (*)(struct tty *, const struct tty_ctx *),
78 struct client *, struct tty_ctx *);
79 #endif
80
81 #define tty_use_margin(tty) \
82 (tty->term->flags & TERM_DECSLRM)
83 #define tty_full_width(tty, ctx) \
84 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
85
86 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
87 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
88 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
89
90 #define TTY_QUERY_TIMEOUT 5
91 #define TTY_REQUEST_LIMIT 30
92
93 void
94 tty_create_log(void)
95 {
96 char name[64];
97
98 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
99
100 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
101 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
102 fatal("fcntl failed");
103 }
104
105 int
106 tty_init(struct tty *tty, struct client *c)
107 {
108 if (!isatty(c->fd))
109 return (-1);
110
111 memset(tty, 0, sizeof *tty);
112 tty->client = c;
113
114 tty->cstyle = SCREEN_CURSOR_DEFAULT;
115 tty->ccolour = -1;
116 tty->fg = tty->bg = -1;
117
118 if (tcgetattr(c->fd, &tty->tio) != 0)
119 return (-1);
120 return (0);
121 }
122
123 void
124 tty_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(c->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
155 void
156 tty_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
164 static void
165 tty_read_callback(__unused int fd, __unused short events, void *data)
166 {
167 struct tty *tty = data;
168 struct client *c = tty->client;
169 const char *name = c->name;
170 size_t size = EVBUFFER_LENGTH(tty->in);
171 int nread;
172
173 nread = evbuffer_read(tty->in, c->fd, -1);
174 if (nread == 0 || nread == -1) {
175 if (nread == 0)
176 log_debug("%s: read closed", name);
177 else
178 log_debug("%s: read error: %s", name, strerror(errno));
179 event_del(&tty->event_in);
180 server_client_lost(tty->client);
181 return;
182 }
183 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
184
185 while (tty_keys_next(tty))
186 ;
187 }
188
189 static void
190 tty_timer_callback(__unused int fd, __unused short events, void *data)
191 {
192 struct tty *tty = data;
193 struct client *c = tty->client;
194 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
195
196 log_debug("%s: %zu discarded", c->name, tty->discarded);
197
198 c->flags |= CLIENT_ALLREDRAWFLAGS;
199 c->discarded += tty->discarded;
200
201 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
202 tty->flags &= ~TTY_BLOCK;
203 tty_invalidate(tty);
204 return;
205 }
206 tty->discarded = 0;
207 evtimer_add(&tty->timer, &tv);
208 }
209
210 static int
211 tty_block_maybe(struct tty *tty)
212 {
213 struct client *c = tty->client;
214 size_t size = EVBUFFER_LENGTH(tty->out);
215 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
216
217 if (size == 0)
218 tty->flags &= ~TTY_NOBLOCK;
219 else if (tty->flags & TTY_NOBLOCK)
220 return (0);
221
222 if (size < TTY_BLOCK_START(tty))
223 return (0);
224
225 if (tty->flags & TTY_BLOCK)
226 return (1);
227 tty->flags |= TTY_BLOCK;
228
229 log_debug("%s: can't keep up, %zu discarded", c->name, size);
230
231 evbuffer_drain(tty->out, size);
232 c->discarded += size;
233
234 tty->discarded = 0;
235 evtimer_add(&tty->timer, &tv);
236 return (1);
237 }
238
239 static void
240 tty_write_callback(__unused int fd, __unused short events, void *data)
241 {
242 struct tty *tty = data;
243 struct client *c = tty->client;
244 size_t size = EVBUFFER_LENGTH(tty->out);
245 int nwrite;
246
247 nwrite = evbuffer_write(tty->out, c->fd);
248 if (nwrite == -1)
249 return;
250 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
251
252 if (c->redraw > 0) {
253 if ((size_t)nwrite >= c->redraw)
254 c->redraw = 0;
255 else
256 c->redraw -= nwrite;
257 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
258 c->redraw);
259 } else if (tty_block_maybe(tty))
260 return;
261
262 if (EVBUFFER_LENGTH(tty->out) != 0)
263 event_add(&tty->event_out, NULL);
264 }
265
266 int
267 tty_open(struct tty *tty, char **cause)
268 {
269 struct client *c = tty->client;
270
271 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
272 c->term_ncaps, &c->term_features, cause);
273 if (tty->term == NULL) {
274 tty_close(tty);
275 return (-1);
276 }
277 tty->flags |= TTY_OPENED;
278
279 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
280
281 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
282 tty_read_callback, tty);
283 tty->in = evbuffer_new();
284 if (tty->in == NULL)
285 fatal("out of memory");
286
287 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
288 tty->out = evbuffer_new();
289 if (tty->out == NULL)
290 fatal("out of memory");
291
292 evtimer_set(&tty->timer, tty_timer_callback, tty);
293
294 tty_start_tty(tty);
295 tty_keys_build(tty);
296
297 return (0);
298 }
299
300 static void
301 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
302 {
303 struct tty *tty = data;
304 struct client *c = tty->client;
305
306 log_debug("%s: start timer fired", c->name);
307 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
308 tty_update_features(tty);
309 tty->flags |= TTY_ALL_REQUEST_FLAGS;
310 }
311
312 void
313 tty_start_tty(struct tty *tty)
314 {
315 struct client *c = tty->client;
316 struct termios tio;
317 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
318
319 setblocking(c->fd, 0);
320 event_add(&tty->event_in, NULL);
321
322 memcpy(&tio, &tty->tio, sizeof tio);
323 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
324 tio.c_iflag |= IGNBRK;
325 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
326 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
327 ECHOKE|ISIG);
328 tio.c_cc[VMIN] = 1;
329 tio.c_cc[VTIME] = 0;
330 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
331 tcflush(c->fd, TCOFLUSH);
332
333 tty_putcode(tty, TTYC_SMCUP);
334
335 tty_putcode(tty, TTYC_SMKX);
336 tty_putcode(tty, TTYC_CLEAR);
337
338 if (tty_acs_needed(tty)) {
339 log_debug("%s: using capabilities for ACS", c->name);
340 tty_putcode(tty, TTYC_ENACS);
341 } else
342 log_debug("%s: using UTF-8 for ACS", c->name);
343
344 tty_putcode(tty, TTYC_CNORM);
345 if (tty_term_has(tty->term, TTYC_KMOUS)) {
346 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
347 tty_puts(tty, "\033[?1006l\033[?1005l");
348 }
349 if (tty_term_has(tty->term, TTYC_ENBP))
350 tty_putcode(tty, TTYC_ENBP);
351
352 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
353 evtimer_add(&tty->start_timer, &tv);
354
355 tty->flags |= TTY_STARTED;
356 tty_invalidate(tty);
357
358 if (tty->ccolour != -1)
359 tty_force_cursor_colour(tty, -1);
360
361 tty->mouse_drag_flag = 0;
362 tty->mouse_drag_update = NULL;
363 tty->mouse_drag_release = NULL;
364 }
365
366 void
367 tty_send_requests(struct tty *tty)
368 {
369 if (~tty->flags & TTY_STARTED)
370 return;
371
372 if (tty->term->flags & TERM_VT100LIKE) {
373 if (~tty->term->flags & TTY_HAVEDA)
374 tty_puts(tty, "\033[c");
375 if (~tty->flags & TTY_HAVEDA2)
376 tty_puts(tty, "\033[>c");
377 if (~tty->flags & TTY_HAVEXDA)
378 tty_puts(tty, "\033[>q");
379 tty_puts(tty, "\033]10;?\033\\");
380 tty_puts(tty, "\033]11;?\033\\");
381 } else
382 tty->flags |= TTY_ALL_REQUEST_FLAGS;
383 tty->last_requests = time(NULL);
384 }
385
386 void
387 tty_repeat_requests(struct tty *tty)
388 {
389 time_t t = time(NULL);
390
391 if (~tty->flags & TTY_STARTED)
392 return;
393
394 if (t - tty->last_requests <= TTY_REQUEST_LIMIT)
395 return;
396 tty->last_requests = t;
397
398 if (tty->term->flags & TERM_VT100LIKE) {
399 tty_puts(tty, "\033]10;?\033\\");
400 tty_puts(tty, "\033]11;?\033\\");
401 }
402 }
403
404 void
405 tty_stop_tty(struct tty *tty)
406 {
407 struct client *c = tty->client;
408 struct winsize ws;
409
410 if (!(tty->flags & TTY_STARTED))
411 return;
412 tty->flags &= ~TTY_STARTED;
413
414 evtimer_del(&tty->start_timer);
415
416 event_del(&tty->timer);
417 tty->flags &= ~TTY_BLOCK;
418
419 event_del(&tty->event_in);
420 event_del(&tty->event_out);
421
422 /*
423 * Be flexible about error handling and try not kill the server just
424 * because the fd is invalid. Things like ssh -t can easily leave us
425 * with a dead tty.
426 */
427 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
428 return;
429 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
430 return;
431
432 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
433 if (tty_acs_needed(tty))
434 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
435 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
436 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
437 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
438 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
439 if (tty_term_has(tty->term, TTYC_SE))
440 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
441 else if (tty_term_has(tty->term, TTYC_SS))
442 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0));
443 }
444 if (tty->ccolour != -1)
445 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
446
447 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
448 if (tty_term_has(tty->term, TTYC_KMOUS)) {
449 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
450 tty_raw(tty, "\033[?1006l\033[?1005l");
451 }
452 if (tty_term_has(tty->term, TTYC_DSBP))
453 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
454
455 if (tty->term->flags & TERM_VT100LIKE)
456 tty_raw(tty, "\033[?7727l");
457 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
458 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
459
460 if (tty_use_margin(tty))
461 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
462 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
463
464 setblocking(c->fd, 1);
465 }
466
467 void
468 tty_close(struct tty *tty)
469 {
470 if (event_initialized(&tty->key_timer))
471 evtimer_del(&tty->key_timer);
472 tty_stop_tty(tty);
473
474 if (tty->flags & TTY_OPENED) {
475 evbuffer_free(tty->in);
476 event_del(&tty->event_in);
477 evbuffer_free(tty->out);
478 event_del(&tty->event_out);
479
480 tty_term_free(tty->term);
481 tty_keys_free(tty);
482
483 tty->flags &= ~TTY_OPENED;
484 }
485 }
486
487 void
488 tty_free(struct tty *tty)
489 {
490 tty_close(tty);
491 }
492
493 void
494 tty_update_features(struct tty *tty)
495 {
496 struct client *c = tty->client;
497
498 if (tty_apply_features(tty->term, c->term_features))
499 tty_term_apply_overrides(tty->term);
500
501 if (tty_use_margin(tty))
502 tty_putcode(tty, TTYC_ENMG);
503 if (options_get_number(global_options, "extended-keys"))
504 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
505 if (options_get_number(global_options, "focus-events"))
506 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
507 if (tty->term->flags & TERM_VT100LIKE)
508 tty_puts(tty, "\033[?7727h");
509
510 /*
511 * Features might have changed since the first draw during attach. For
512 * example, this happens when DA responses are received.
513 */
514 server_redraw_client(c);
515
516 tty_invalidate(tty);
517 }
518
519 void
520 tty_raw(struct tty *tty, const char *s)
521 {
522 struct client *c = tty->client;
523 ssize_t n, slen;
524 u_int i;
525
526 slen = strlen(s);
527 for (i = 0; i < 5; i++) {
528 n = write(c->fd, s, slen);
529 if (n >= 0) {
530 s += n;
531 slen -= n;
532 if (slen == 0)
533 break;
534 } else if (n == -1 && errno != EAGAIN)
535 break;
536 usleep(100);
537 }
538 }
539
540 void
541 tty_putcode(struct tty *tty, enum tty_code_code code)
542 {
543 tty_puts(tty, tty_term_string(tty->term, code));
544 }
545
546 void
547 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a)
548 {
549 if (a < 0)
550 return;
551 tty_puts(tty, tty_term_string_i(tty->term, code, a));
552 }
553
554 void
555 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b)
556 {
557 if (a < 0 || b < 0)
558 return;
559 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b));
560 }
561
562 void
563 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c)
564 {
565 if (a < 0 || b < 0 || c < 0)
566 return;
567 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c));
568 }
569
570 void
571 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a)
572 {
573 if (a != NULL)
574 tty_puts(tty, tty_term_string_s(tty->term, code, a));
575 }
576
577 void
578 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a,
579 const char *b)
580 {
581 if (a != NULL && b != NULL)
582 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b));
583 }
584
585 static void
586 tty_add(struct tty *tty, const char *buf, size_t len)
587 {
588 struct client *c = tty->client;
589
590 if (tty->flags & TTY_BLOCK) {
591 tty->discarded += len;
592 return;
593 }
594
595 evbuffer_add(tty->out, buf, len);
596 log_debug("%s: %.*s", c->name, (int)len, buf);
597 c->written += len;
598
599 if (tty_log_fd != -1)
600 write(tty_log_fd, buf, len);
601 if (tty->flags & TTY_STARTED)
602 event_add(&tty->event_out, NULL);
603 }
604
605 void
606 tty_puts(struct tty *tty, const char *s)
607 {
608 if (*s != '\0')
609 tty_add(tty, s, strlen(s));
610 }
611
612 void
613 tty_putc(struct tty *tty, u_char ch)
614 {
615 const char *acs;
616
617 if ((tty->term->flags & TERM_NOAM) &&
618 ch >= 0x20 && ch != 0x7f &&
619 tty->cy == tty->sy - 1 &&
620 tty->cx + 1 >= tty->sx)
621 return;
622
623 if (tty->cell.attr & GRID_ATTR_CHARSET) {
624 acs = tty_acs_get(tty, ch);
625 if (acs != NULL)
626 tty_add(tty, acs, strlen(acs));
627 else
628 tty_add(tty, &ch, 1);
629 } else
630 tty_add(tty, &ch, 1);
631
632 if (ch >= 0x20 && ch != 0x7f) {
633 if (tty->cx >= tty->sx) {
634 tty->cx = 1;
635 if (tty->cy != tty->rlower)
636 tty->cy++;
637
638 /*
639 * On !am terminals, force the cursor position to where
640 * we think it should be after a line wrap - this means
641 * it works on sensible terminals as well.
642 */
643 if (tty->term->flags & TERM_NOAM)
644 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx);
645 } else
646 tty->cx++;
647 }
648 }
649
650 void
651 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
652 {
653 if ((tty->term->flags & TERM_NOAM) &&
654 tty->cy == tty->sy - 1 &&
655 tty->cx + len >= tty->sx)
656 len = tty->sx - tty->cx - 1;
657
658 tty_add(tty, buf, len);
659 if (tty->cx + width > tty->sx) {
660 tty->cx = (tty->cx + width) - tty->sx;
661 if (tty->cx <= tty->sx)
662 tty->cy++;
663 else
664 tty->cx = tty->cy = UINT_MAX;
665 } else
666 tty->cx += width;
667 }
668
669 static void
670 tty_set_italics(struct tty *tty)
671 {
672 const char *s;
673
674 if (tty_term_has(tty->term, TTYC_SITM)) {
675 s = options_get_string(global_options, "default-terminal");
676 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
677 tty_putcode(tty, TTYC_SITM);
678 return;
679 }
680 }
681 tty_putcode(tty, TTYC_SMSO);
682 }
683
684 void
685 tty_set_title(struct tty *tty, const char *title)
686 {
687 if (!tty_term_has(tty->term, TTYC_TSL) ||
688 !tty_term_has(tty->term, TTYC_FSL))
689 return;
690
691 tty_putcode(tty, TTYC_TSL);
692 tty_puts(tty, title);
693 tty_putcode(tty, TTYC_FSL);
694 }
695
696 void
697 tty_set_path(struct tty *tty, const char *title)
698 {
699 if (!tty_term_has(tty->term, TTYC_SWD) ||
700 !tty_term_has(tty->term, TTYC_FSL))
701 return;
702
703 tty_putcode(tty, TTYC_SWD);
704 tty_puts(tty, title);
705 tty_putcode(tty, TTYC_FSL);
706 }
707
708 static void
709 tty_force_cursor_colour(struct tty *tty, int c)
710 {
711 u_char r, g, b;
712 char s[13];
713
714 if (c != -1)
715 c = colour_force_rgb(c);
716 if (c == tty->ccolour)
717 return;
718 if (c == -1)
719 tty_putcode(tty, TTYC_CR);
720 else {
721 colour_split_rgb(c, &r, &g, &b);
722 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
723 tty_putcode_s(tty, TTYC_CS, s);
724 }
725 tty->ccolour = c;
726 }
727
728 static int
729 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
730 {
731 enum screen_cursor_style cstyle;
732 int ccolour, changed, cmode = mode;
733
734 /* Set cursor colour if changed. */
735 if (s != NULL) {
736 ccolour = s->ccolour;
737 if (s->ccolour == -1)
738 ccolour = s->default_ccolour;
739 tty_force_cursor_colour(tty, ccolour);
740 }
741
742 /* If cursor is off, set as invisible. */
743 if (~cmode & MODE_CURSOR) {
744 if (tty->mode & MODE_CURSOR)
745 tty_putcode(tty, TTYC_CIVIS);
746 return (cmode);
747 }
748
749 /* Check if blinking or very visible flag changed or style changed. */
750 if (s == NULL)
751 cstyle = tty->cstyle;
752 else {
753 cstyle = s->cstyle;
754 if (cstyle == SCREEN_CURSOR_DEFAULT) {
755 if (~cmode & MODE_CURSOR_BLINKING_SET) {
756 if (s->default_mode & MODE_CURSOR_BLINKING)
757 cmode |= MODE_CURSOR_BLINKING;
758 else
759 cmode &= ~MODE_CURSOR_BLINKING;
760 }
761 cstyle = s->default_cstyle;
762 }
763 }
764
765 /* If nothing changed, do nothing. */
766 changed = cmode ^ tty->mode;
767 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
768 return (cmode);
769
770 /*
771 * Set cursor style. If an explicit style has been set with DECSCUSR,
772 * set it if supported, otherwise send cvvis for blinking styles.
773 *
774 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
775 * if either the blinking or very visible flags are set.
776 */
777 tty_putcode(tty, TTYC_CNORM);
778 switch (cstyle) {
779 case SCREEN_CURSOR_DEFAULT:
780 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
781 if (tty_term_has(tty->term, TTYC_SE))
782 tty_putcode(tty, TTYC_SE);
783 else
784 tty_putcode_i(tty, TTYC_SS, 0);
785 }
786 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
787 tty_putcode(tty, TTYC_CVVIS);
788 break;
789 case SCREEN_CURSOR_BLOCK:
790 if (tty_term_has(tty->term, TTYC_SS)) {
791 if (cmode & MODE_CURSOR_BLINKING)
792 tty_putcode_i(tty, TTYC_SS, 1);
793 else
794 tty_putcode_i(tty, TTYC_SS, 2);
795 } else if (cmode & MODE_CURSOR_BLINKING)
796 tty_putcode(tty, TTYC_CVVIS);
797 break;
798 case SCREEN_CURSOR_UNDERLINE:
799 if (tty_term_has(tty->term, TTYC_SS)) {
800 if (cmode & MODE_CURSOR_BLINKING)
801 tty_putcode_i(tty, TTYC_SS, 3);
802 else
803 tty_putcode_i(tty, TTYC_SS, 4);
804 } else if (cmode & MODE_CURSOR_BLINKING)
805 tty_putcode(tty, TTYC_CVVIS);
806 break;
807 case SCREEN_CURSOR_BAR:
808 if (tty_term_has(tty->term, TTYC_SS)) {
809 if (cmode & MODE_CURSOR_BLINKING)
810 tty_putcode_i(tty, TTYC_SS, 5);
811 else
812 tty_putcode_i(tty, TTYC_SS, 6);
813 } else if (cmode & MODE_CURSOR_BLINKING)
814 tty_putcode(tty, TTYC_CVVIS);
815 break;
816 }
817 tty->cstyle = cstyle;
818 return (cmode);
819 }
820
821 void
822 tty_update_mode(struct tty *tty, int mode, struct screen *s)
823 {
824 struct tty_term *term = tty->term;
825 struct client *c = tty->client;
826 int changed;
827
828 if (tty->flags & TTY_NOCURSOR)
829 mode &= ~MODE_CURSOR;
830
831 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
832 mode |= MODE_CURSOR_BLINKING;
833 else
834 mode &= ~MODE_CURSOR_BLINKING;
835
836 changed = mode ^ tty->mode;
837 if (log_get_level() != 0 && changed != 0) {
838 log_debug("%s: current mode %s", c->name,
839 screen_mode_to_string(tty->mode));
840 log_debug("%s: setting mode %s", c->name,
841 screen_mode_to_string(mode));
842 }
843
844 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
845 /*
846 * If the mouse modes have changed, clear then all and apply
847 * again. There are differences in how terminals track the
848 * various bits.
849 */
850 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
851 if (mode & ALL_MOUSE_MODES)
852 tty_puts(tty, "\033[?1006h");
853 if (mode & MODE_MOUSE_ALL)
854 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
855 else if (mode & MODE_MOUSE_BUTTON)
856 tty_puts(tty, "\033[?1000h\033[?1002h");
857 else if (mode & MODE_MOUSE_STANDARD)
858 tty_puts(tty, "\033[?1000h");
859 }
860 tty->mode = mode;
861 }
862
863 static void
864 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
865 enum tty_code_code code1, u_int n)
866 {
867 if (tty_term_has(tty->term, code))
868 tty_putcode_i(tty, code, n);
869 else {
870 while (n-- > 0)
871 tty_putcode(tty, code1);
872 }
873 }
874
875 static void
876 tty_repeat_space(struct tty *tty, u_int n)
877 {
878 static char s[500];
879
880 if (*s != ' ')
881 memset(s, ' ', sizeof s);
882
883 while (n > sizeof s) {
884 tty_putn(tty, s, sizeof s, sizeof s);
885 n -= sizeof s;
886 }
887 if (n != 0)
888 tty_putn(tty, s, n, n);
889 }
890
891 /* Is this window bigger than the terminal? */
892 int
893 tty_window_bigger(struct tty *tty)
894 {
895 struct client *c = tty->client;
896 struct window *w = c->session->curw->window;
897
898 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
899 }
900
901 /* What offset should this window be drawn at? */
902 int
903 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
904 {
905 *ox = tty->oox;
906 *oy = tty->ooy;
907 *sx = tty->osx;
908 *sy = tty->osy;
909
910 return (tty->oflag);
911 }
912
913 /* What offset should this window be drawn at? */
914 static int
915 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
916 {
917 struct client *c = tty->client;
918 struct window *w = c->session->curw->window;
919 struct window_pane *wp = server_client_get_pane(c);
920 u_int cx, cy, lines;
921
922 lines = status_line_size(c);
923
924 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
925 *ox = 0;
926 *oy = 0;
927 *sx = w->sx;
928 *sy = w->sy;
929
930 c->pan_window = NULL;
931 return (0);
932 }
933
934 *sx = tty->sx;
935 *sy = tty->sy - lines;
936
937 if (c->pan_window == w) {
938 if (*sx >= w->sx)
939 c->pan_ox = 0;
940 else if (c->pan_ox + *sx > w->sx)
941 c->pan_ox = w->sx - *sx;
942 *ox = c->pan_ox;
943 if (*sy >= w->sy)
944 c->pan_oy = 0;
945 else if (c->pan_oy + *sy > w->sy)
946 c->pan_oy = w->sy - *sy;
947 *oy = c->pan_oy;
948 return (1);
949 }
950
951 if (~wp->screen->mode & MODE_CURSOR) {
952 *ox = 0;
953 *oy = 0;
954 } else {
955 cx = wp->xoff + wp->screen->cx;
956 cy = wp->yoff + wp->screen->cy;
957
958 if (cx < *sx)
959 *ox = 0;
960 else if (cx > w->sx - *sx)
961 *ox = w->sx - *sx;
962 else
963 *ox = cx - *sx / 2;
964
965 if (cy < *sy)
966 *oy = 0;
967 else if (cy > w->sy - *sy)
968 *oy = w->sy - *sy;
969 else
970 *oy = cy - *sy / 2;
971 }
972
973 c->pan_window = NULL;
974 return (1);
975 }
976
977 /* Update stored offsets for a window and redraw if necessary. */
978 void
979 tty_update_window_offset(struct window *w)
980 {
981 struct client *c;
982
983 TAILQ_FOREACH(c, &clients, entry) {
984 if (c->session != NULL &&
985 c->session->curw != NULL &&
986 c->session->curw->window == w)
987 tty_update_client_offset(c);
988 }
989 }
990
991 /* Update stored offsets for a client and redraw if necessary. */
992 void
993 tty_update_client_offset(struct client *c)
994 {
995 u_int ox, oy, sx, sy;
996
997 if (~c->flags & CLIENT_TERMINAL)
998 return;
999
1000 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
1001 if (ox == c->tty.oox &&
1002 oy == c->tty.ooy &&
1003 sx == c->tty.osx &&
1004 sy == c->tty.osy)
1005 return;
1006
1007 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
1008 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
1009 ox, oy, sx, sy);
1010
1011 c->tty.oox = ox;
1012 c->tty.ooy = oy;
1013 c->tty.osx = sx;
1014 c->tty.osy = sy;
1015
1016 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
1017 }
1018
1019 /*
1020 * Is the region large enough to be worth redrawing once later rather than
1021 * probably several times now? Currently yes if it is more than 50% of the
1022 * pane.
1023 */
1024 static int
1025 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1026 {
1027 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
1028 }
1029
1030 /*
1031 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1032 * emulated.
1033 */
1034 static int
1035 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1036 {
1037 if (tty_term_flag(tty->term, TTYC_BCE))
1038 return (0);
1039 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1040 return (1);
1041 return (0);
1042 }
1043
1044 /*
1045 * Redraw scroll region using data from screen (already updated). Used when
1046 * CSR not supported, or window is a pane that doesn't take up the full
1047 * width of the terminal.
1048 */
1049 static void
1050 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1051 {
1052 struct client *c = tty->client;
1053 u_int i;
1054
1055 /*
1056 * If region is large, schedule a redraw. In most cases this is likely
1057 * to be followed by some more scrolling.
1058 */
1059 if (tty_large_region(tty, ctx)) {
1060 log_debug("%s: %s large redraw", __func__, c->name);
1061 ctx->redraw_cb(ctx);
1062 return;
1063 }
1064
1065 for (i = ctx->orupper; i <= ctx->orlower; i++)
1066 tty_draw_pane(tty, ctx, i);
1067 }
1068
1069 /* Is this position visible in the pane? */
1070 static int
1071 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1072 u_int py, u_int nx, u_int ny)
1073 {
1074 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1075
1076 if (!ctx->bigger)
1077 return (1);
1078
1079 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1080 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1081 return (0);
1082 return (1);
1083 }
1084
1085 /* Clamp line position to visible part of pane. */
1086 static int
1087 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1088 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1089 {
1090 u_int xoff = ctx->rxoff + px;
1091
1092 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1093 return (0);
1094 *ry = ctx->yoff + py - ctx->woy;
1095
1096 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1097 /* All visible. */
1098 *i = 0;
1099 *x = ctx->xoff + px - ctx->wox;
1100 *rx = nx;
1101 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1102 /* Both left and right not visible. */
1103 *i = ctx->wox;
1104 *x = 0;
1105 *rx = ctx->wsx;
1106 } else if (xoff < ctx->wox) {
1107 /* Left not visible. */
1108 *i = ctx->wox - (ctx->xoff + px);
1109 *x = 0;
1110 *rx = nx - *i;
1111 } else {
1112 /* Right not visible. */
1113 *i = 0;
1114 *x = (ctx->xoff + px) - ctx->wox;
1115 *rx = ctx->wsx - *x;
1116 }
1117 if (*rx > nx)
1118 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1119
1120 return (1);
1121 }
1122
1123 /* Clear a line. */
1124 static void
1125 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1126 u_int px, u_int nx, u_int bg)
1127 {
1128 struct client *c = tty->client;
1129 struct overlay_ranges r;
1130 u_int i;
1131
1132 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1133
1134 /* Nothing to clear. */
1135 if (nx == 0)
1136 return;
1137
1138 /* If genuine BCE is available, can try escape sequences. */
1139 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1140 /* Off the end of the line, use EL if available. */
1141 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1142 tty_cursor(tty, px, py);
1143 tty_putcode(tty, TTYC_EL);
1144 return;
1145 }
1146
1147 /* At the start of the line. Use EL1. */
1148 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1149 tty_cursor(tty, px + nx - 1, py);
1150 tty_putcode(tty, TTYC_EL1);
1151 return;
1152 }
1153
1154 /* Section of line. Use ECH if possible. */
1155 if (tty_term_has(tty->term, TTYC_ECH)) {
1156 tty_cursor(tty, px, py);
1157 tty_putcode_i(tty, TTYC_ECH, nx);
1158 return;
1159 }
1160 }
1161
1162 /*
1163 * Couldn't use an escape sequence, use spaces. Clear only the visible
1164 * bit if there is an overlay.
1165 */
1166 tty_check_overlay_range(tty, px, py, nx, &r);
1167 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1168 if (r.nx[i] == 0)
1169 continue;
1170 tty_cursor(tty, r.px[i], py);
1171 tty_repeat_space(tty, r.nx[i]);
1172 }
1173 }
1174
1175 /* Clear a line, adjusting to visible part of pane. */
1176 static void
1177 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1178 u_int px, u_int nx, u_int bg)
1179 {
1180 struct client *c = tty->client;
1181 u_int i, x, rx, ry;
1182
1183 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1184
1185 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1186 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1187 }
1188
1189 /* Clamp area position to visible part of pane. */
1190 static int
1191 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1192 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1193 u_int *ry)
1194 {
1195 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1196
1197 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1198 return (0);
1199
1200 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1201 /* All visible. */
1202 *i = 0;
1203 *x = ctx->xoff + px - ctx->wox;
1204 *rx = nx;
1205 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1206 /* Both left and right not visible. */
1207 *i = ctx->wox;
1208 *x = 0;
1209 *rx = ctx->wsx;
1210 } else if (xoff < ctx->wox) {
1211 /* Left not visible. */
1212 *i = ctx->wox - (ctx->xoff + px);
1213 *x = 0;
1214 *rx = nx - *i;
1215 } else {
1216 /* Right not visible. */
1217 *i = 0;
1218 *x = (ctx->xoff + px) - ctx->wox;
1219 *rx = ctx->wsx - *x;
1220 }
1221 if (*rx > nx)
1222 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1223
1224 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1225 /* All visible. */
1226 *j = 0;
1227 *y = ctx->yoff + py - ctx->woy;
1228 *ry = ny;
1229 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1230 /* Both top and bottom not visible. */
1231 *j = ctx->woy;
1232 *y = 0;
1233 *ry = ctx->wsy;
1234 } else if (yoff < ctx->woy) {
1235 /* Top not visible. */
1236 *j = ctx->woy - (ctx->yoff + py);
1237 *y = 0;
1238 *ry = ny - *j;
1239 } else {
1240 /* Bottom not visible. */
1241 *j = 0;
1242 *y = (ctx->yoff + py) - ctx->woy;
1243 *ry = ctx->wsy - *y;
1244 }
1245 if (*ry > ny)
1246 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1247
1248 return (1);
1249 }
1250
1251 /* Clear an area, adjusting to visible part of pane. */
1252 static void
1253 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1254 u_int ny, u_int px, u_int nx, u_int bg)
1255 {
1256 struct client *c = tty->client;
1257 u_int yy;
1258 char tmp[64];
1259
1260 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1261
1262 /* Nothing to clear. */
1263 if (nx == 0 || ny == 0)
1264 return;
1265
1266 /* If genuine BCE is available, can try escape sequences. */
1267 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1268 /* Use ED if clearing off the bottom of the terminal. */
1269 if (px == 0 &&
1270 px + nx >= tty->sx &&
1271 py + ny >= tty->sy &&
1272 tty_term_has(tty->term, TTYC_ED)) {
1273 tty_cursor(tty, 0, py);
1274 tty_putcode(tty, TTYC_ED);
1275 return;
1276 }
1277
1278 /*
1279 * On VT420 compatible terminals we can use DECFRA if the
1280 * background colour isn't default (because it doesn't work
1281 * after SGR 0).
1282 */
1283 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1284 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1285 py + 1, px + 1, py + ny, px + nx);
1286 tty_puts(tty, tmp);
1287 return;
1288 }
1289
1290 /* Full lines can be scrolled away to clear them. */
1291 if (px == 0 &&
1292 px + nx >= tty->sx &&
1293 ny > 2 &&
1294 tty_term_has(tty->term, TTYC_CSR) &&
1295 tty_term_has(tty->term, TTYC_INDN)) {
1296 tty_region(tty, py, py + ny - 1);
1297 tty_margin_off(tty);
1298 tty_putcode_i(tty, TTYC_INDN, ny);
1299 return;
1300 }
1301
1302 /*
1303 * If margins are supported, can just scroll the area off to
1304 * clear it.
1305 */
1306 if (nx > 2 &&
1307 ny > 2 &&
1308 tty_term_has(tty->term, TTYC_CSR) &&
1309 tty_use_margin(tty) &&
1310 tty_term_has(tty->term, TTYC_INDN)) {
1311 tty_region(tty, py, py + ny - 1);
1312 tty_margin(tty, px, px + nx - 1);
1313 tty_putcode_i(tty, TTYC_INDN, ny);
1314 return;
1315 }
1316 }
1317
1318 /* Couldn't use an escape sequence, loop over the lines. */
1319 for (yy = py; yy < py + ny; yy++)
1320 tty_clear_line(tty, defaults, yy, px, nx, bg);
1321 }
1322
1323 /* Clear an area in a pane. */
1324 static void
1325 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1326 u_int ny, u_int px, u_int nx, u_int bg)
1327 {
1328 u_int i, j, x, y, rx, ry;
1329
1330 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1331 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1332 }
1333
1334 static void
1335 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1336 {
1337 struct screen *s = ctx->s;
1338 u_int nx = ctx->sx, i, x, rx, ry;
1339
1340 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1341
1342 if (!ctx->bigger) {
1343 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1344 &ctx->defaults, ctx->palette);
1345 return;
1346 }
1347 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1348 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1349 ctx->palette);
1350 }
1351 }
1352
1353 static const struct grid_cell *
1354 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1355 {
1356 static struct grid_cell new;
1357 int c;
1358
1359 /* Characters less than 0x7f are always fine, no matter what. */
1360 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1361 return (gc);
1362
1363 /* UTF-8 terminal and a UTF-8 character - fine. */
1364 if (tty->client->flags & CLIENT_UTF8)
1365 return (gc);
1366 memcpy(&new, gc, sizeof new);
1367
1368 /* See if this can be mapped to an ACS character. */
1369 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1370 if (c != -1) {
1371 utf8_set(&new.data, c);
1372 new.attr |= GRID_ATTR_CHARSET;
1373 return (&new);
1374 }
1375
1376 /* Replace by the right number of underscores. */
1377 new.data.size = gc->data.width;
1378 if (new.data.size > UTF8_SIZE)
1379 new.data.size = UTF8_SIZE;
1380 memset(new.data.data, '_', new.data.size);
1381 return (&new);
1382 }
1383
1384 /*
1385 * Check if a single character is obstructed by the overlay and return a
1386 * boolean.
1387 */
1388 static int
1389 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1390 {
1391 struct overlay_ranges r;
1392
1393 /*
1394 * A unit width range will always return nx[2] == 0 from a check, even
1395 * with multiple overlays, so it's sufficient to check just the first
1396 * two entries.
1397 */
1398 tty_check_overlay_range(tty, px, py, 1, &r);
1399 if (r.nx[0] + r.nx[1] == 0)
1400 return (0);
1401 return (1);
1402 }
1403
1404 /* Return parts of the input range which are visible. */
1405 static void
1406 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1407 struct overlay_ranges *r)
1408 {
1409 struct client *c = tty->client;
1410
1411 if (c->overlay_check == NULL) {
1412 r->px[0] = px;
1413 r->nx[0] = nx;
1414 r->px[1] = 0;
1415 r->nx[1] = 0;
1416 r->px[2] = 0;
1417 r->nx[2] = 0;
1418 return;
1419 }
1420
1421 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1422 }
1423
1424 void
1425 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1426 u_int atx, u_int aty, const struct grid_cell *defaults,
1427 struct colour_palette *palette)
1428 {
1429 struct grid *gd = s->grid;
1430 struct grid_cell gc, last;
1431 const struct grid_cell *gcp;
1432 struct grid_line *gl;
1433 struct client *c = tty->client;
1434 struct overlay_ranges r;
1435 u_int i, j, ux, sx, width, hidden, eux, nxx;
1436 u_int cellsize;
1437 int flags, cleared = 0, wrapped = 0;
1438 char buf[512];
1439 size_t len;
1440
1441 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1442 px, py, nx, atx, aty);
1443 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1444 defaults->bg);
1445
1446 /*
1447 * py is the line in the screen to draw.
1448 * px is the start x and nx is the width to draw.
1449 * atx,aty is the line on the terminal to draw it.
1450 */
1451
1452 flags = (tty->flags & TTY_NOCURSOR);
1453 tty->flags |= TTY_NOCURSOR;
1454 tty_update_mode(tty, tty->mode, s);
1455
1456 tty_region_off(tty);
1457 tty_margin_off(tty);
1458
1459 /*
1460 * Clamp the width to cellsize - note this is not cellused, because
1461 * there may be empty background cells after it (from BCE).
1462 */
1463 sx = screen_size_x(s);
1464 if (nx > sx)
1465 nx = sx;
1466 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1467 if (sx > cellsize)
1468 sx = cellsize;
1469 if (sx > tty->sx)
1470 sx = tty->sx;
1471 if (sx > nx)
1472 sx = nx;
1473 ux = 0;
1474
1475 if (py == 0)
1476 gl = NULL;
1477 else
1478 gl = grid_get_line(gd, gd->hsize + py - 1);
1479 if (gl == NULL ||
1480 (~gl->flags & GRID_LINE_WRAPPED) ||
1481 atx != 0 ||
1482 tty->cx < tty->sx ||
1483 nx < tty->sx) {
1484 if (nx < tty->sx &&
1485 atx == 0 &&
1486 px + sx != nx &&
1487 tty_term_has(tty->term, TTYC_EL1) &&
1488 !tty_fake_bce(tty, defaults, 8) &&
1489 c->overlay_check == NULL) {
1490 tty_default_attributes(tty, defaults, palette, 8,
1491 s->hyperlinks);
1492 tty_cursor(tty, nx - 1, aty);
1493 tty_putcode(tty, TTYC_EL1);
1494 cleared = 1;
1495 }
1496 } else {
1497 log_debug("%s: wrapped line %u", __func__, aty);
1498 wrapped = 1;
1499 }
1500
1501 memcpy(&last, &grid_default_cell, sizeof last);
1502 len = 0;
1503 width = 0;
1504
1505 for (i = 0; i < sx; i++) {
1506 grid_view_get_cell(gd, px + i, py, &gc);
1507 gcp = tty_check_codeset(tty, &gc);
1508 if (len != 0 &&
1509 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1510 (gcp->attr & GRID_ATTR_CHARSET) ||
1511 gcp->flags != last.flags ||
1512 gcp->attr != last.attr ||
1513 gcp->fg != last.fg ||
1514 gcp->bg != last.bg ||
1515 gcp->us != last.us ||
1516 gcp->link != last.link ||
1517 ux + width + gcp->data.width > nx ||
1518 (sizeof buf) - len < gcp->data.size)) {
1519 tty_attributes(tty, &last, defaults, palette,
1520 s->hyperlinks);
1521 if (last.flags & GRID_FLAG_CLEARED) {
1522 log_debug("%s: %zu cleared", __func__, len);
1523 tty_clear_line(tty, defaults, aty, atx + ux,
1524 width, last.bg);
1525 } else {
1526 if (!wrapped || atx != 0 || ux != 0)
1527 tty_cursor(tty, atx + ux, aty);
1528 tty_putn(tty, buf, len, width);
1529 }
1530 ux += width;
1531
1532 len = 0;
1533 width = 0;
1534 wrapped = 0;
1535 }
1536
1537 if (gcp->flags & GRID_FLAG_SELECTED)
1538 screen_select_cell(s, &last, gcp);
1539 else
1540 memcpy(&last, gcp, sizeof last);
1541
1542 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1543 &r);
1544 hidden = 0;
1545 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1546 hidden += r.nx[j];
1547 hidden = gcp->data.width - hidden;
1548 if (hidden != 0 && hidden == gcp->data.width) {
1549 if (~gcp->flags & GRID_FLAG_PADDING)
1550 ux += gcp->data.width;
1551 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1552 if (~gcp->flags & GRID_FLAG_PADDING) {
1553 tty_attributes(tty, &last, defaults, palette,
1554 s->hyperlinks);
1555 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1556 if (r.nx[j] == 0)
1557 continue;
1558 /* Effective width drawn so far. */
1559 eux = r.px[j] - atx;
1560 if (eux < nx) {
1561 tty_cursor(tty, r.px[j], aty);
1562 nxx = nx - eux;
1563 if (r.nx[j] > nxx)
1564 r.nx[j] = nxx;
1565 tty_repeat_space(tty, r.nx[j]);
1566 ux = eux + r.nx[j];
1567 }
1568 }
1569 }
1570 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1571 tty_attributes(tty, &last, defaults, palette,
1572 s->hyperlinks);
1573 tty_cursor(tty, atx + ux, aty);
1574 for (j = 0; j < gcp->data.size; j++)
1575 tty_putc(tty, gcp->data.data[j]);
1576 ux += gcp->data.width;
1577 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1578 memcpy(buf + len, gcp->data.data, gcp->data.size);
1579 len += gcp->data.size;
1580 width += gcp->data.width;
1581 }
1582 }
1583 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1584 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1585 if (last.flags & GRID_FLAG_CLEARED) {
1586 log_debug("%s: %zu cleared (end)", __func__, len);
1587 tty_clear_line(tty, defaults, aty, atx + ux, width,
1588 last.bg);
1589 } else {
1590 if (!wrapped || atx != 0 || ux != 0)
1591 tty_cursor(tty, atx + ux, aty);
1592 tty_putn(tty, buf, len, width);
1593 }
1594 ux += width;
1595 }
1596
1597 if (!cleared && ux < nx) {
1598 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1599 nx - ux, len);
1600 tty_default_attributes(tty, defaults, palette, 8,
1601 s->hyperlinks);
1602 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1603 }
1604
1605 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1606 tty_update_mode(tty, tty->mode, s);
1607 }
1608
1609 #ifdef ENABLE_SIXEL
1610 /* Update context for client. */
1611 static int
1612 tty_set_client_cb(struct tty_ctx *ttyctx, struct client *c)
1613 {
1614 struct window_pane *wp = ttyctx->arg;
1615
1616 if (c->session->curw->window != wp->window)
1617 return (0);
1618 if (wp->layout_cell == NULL)
1619 return (0);
1620
1621 /* Set the properties relevant to the current client. */
1622 ttyctx->bigger = tty_window_offset(&c->tty, &ttyctx->wox, &ttyctx->woy,
1623 &ttyctx->wsx, &ttyctx->wsy);
1624
1625 ttyctx->yoff = ttyctx->ryoff = wp->yoff;
1626 if (status_at_line(c) == 0)
1627 ttyctx->yoff += status_line_size(c);
1628
1629 return (1);
1630 }
1631
1632 void
1633 tty_draw_images(struct client *c, struct window_pane *wp, struct screen *s)
1634 {
1635 struct image *im;
1636 struct tty_ctx ttyctx;
1637
1638 TAILQ_FOREACH(im, &s->images, entry) {
1639 memset(&ttyctx, 0, sizeof ttyctx);
1640
1641 /* Set the client independent properties. */
1642 ttyctx.ocx = im->px;
1643 ttyctx.ocy = im->py;
1644
1645 ttyctx.orlower = s->rlower;
1646 ttyctx.orupper = s->rupper;
1647
1648 ttyctx.xoff = ttyctx.rxoff = wp->xoff;
1649 ttyctx.sx = wp->sx;
1650 ttyctx.sy = wp->sy;
1651
1652 ttyctx.ptr = im;
1653 ttyctx.arg = wp;
1654 ttyctx.set_client_cb = tty_set_client_cb;
1655 ttyctx.allow_invisible_panes = 1;
1656 tty_write_one(tty_cmd_sixelimage, c, &ttyctx);
1657 }
1658 }
1659 #endif
1660
1661 void
1662 tty_sync_start(struct tty *tty)
1663 {
1664 if (tty->flags & TTY_BLOCK)
1665 return;
1666 if (tty->flags & TTY_SYNCING)
1667 return;
1668 tty->flags |= TTY_SYNCING;
1669
1670 if (tty_term_has(tty->term, TTYC_SYNC)) {
1671 log_debug("%s sync start", tty->client->name);
1672 tty_putcode_i(tty, TTYC_SYNC, 1);
1673 }
1674 }
1675
1676 void
1677 tty_sync_end(struct tty *tty)
1678 {
1679 if (tty->flags & TTY_BLOCK)
1680 return;
1681 if (~tty->flags & TTY_SYNCING)
1682 return;
1683 tty->flags &= ~TTY_SYNCING;
1684
1685 if (tty_term_has(tty->term, TTYC_SYNC)) {
1686 log_debug("%s sync end", tty->client->name);
1687 tty_putcode_i(tty, TTYC_SYNC, 2);
1688 }
1689 }
1690
1691 static int
1692 tty_client_ready(const struct tty_ctx *ctx, struct client *c)
1693 {
1694 if (c->session == NULL || c->tty.term == NULL)
1695 return (0);
1696 if (c->flags & CLIENT_SUSPENDED)
1697 return (0);
1698
1699 /*
1700 * If invisible panes are allowed (used for passthrough), don't care if
1701 * redrawing or frozen.
1702 */
1703 if (ctx->allow_invisible_panes)
1704 return (1);
1705
1706 if (c->flags & CLIENT_REDRAWWINDOW)
1707 return (0);
1708 if (c->tty.flags & TTY_FREEZE)
1709 return (0);
1710 return (1);
1711 }
1712
1713 void
1714 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1715 struct tty_ctx *ctx)
1716 {
1717 struct client *c;
1718 int state;
1719
1720 if (ctx->set_client_cb == NULL)
1721 return;
1722 TAILQ_FOREACH(c, &clients, entry) {
1723 if (tty_client_ready(ctx, c)) {
1724 state = ctx->set_client_cb(ctx, c);
1725 if (state == -1)
1726 break;
1727 if (state == 0)
1728 continue;
1729 cmdfn(&c->tty, ctx);
1730 }
1731 }
1732 }
1733
1734 #ifdef ENABLE_SIXEL
1735 /* Only write to the incoming tty instead of every client. */
1736 static void
1737 tty_write_one(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1738 struct client *c, struct tty_ctx *ctx)
1739 {
1740 if (ctx->set_client_cb == NULL)
1741 return;
1742 if ((ctx->set_client_cb(ctx, c)) == 1)
1743 cmdfn(&c->tty, ctx);
1744 }
1745 #endif
1746
1747 void
1748 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1749 {
1750 struct client *c = tty->client;
1751
1752 if (ctx->bigger ||
1753 !tty_full_width(tty, ctx) ||
1754 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1755 (!tty_term_has(tty->term, TTYC_ICH) &&
1756 !tty_term_has(tty->term, TTYC_ICH1)) ||
1757 c->overlay_check != NULL) {
1758 tty_draw_pane(tty, ctx, ctx->ocy);
1759 return;
1760 }
1761
1762 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1763 ctx->s->hyperlinks);
1764
1765 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1766
1767 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1768 }
1769
1770 void
1771 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1772 {
1773 struct client *c = tty->client;
1774
1775 if (ctx->bigger ||
1776 !tty_full_width(tty, ctx) ||
1777 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1778 (!tty_term_has(tty->term, TTYC_DCH) &&
1779 !tty_term_has(tty->term, TTYC_DCH1)) ||
1780 c->overlay_check != NULL) {
1781 tty_draw_pane(tty, ctx, ctx->ocy);
1782 return;
1783 }
1784
1785 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1786 ctx->s->hyperlinks);
1787
1788 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1789
1790 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1791 }
1792
1793 void
1794 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1795 {
1796 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1797 ctx->s->hyperlinks);
1798
1799 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1800 }
1801
1802 void
1803 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1804 {
1805 struct client *c = tty->client;
1806
1807 if (ctx->bigger ||
1808 !tty_full_width(tty, ctx) ||
1809 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1810 !tty_term_has(tty->term, TTYC_CSR) ||
1811 !tty_term_has(tty->term, TTYC_IL1) ||
1812 ctx->sx == 1 ||
1813 ctx->sy == 1 ||
1814 c->overlay_check != NULL) {
1815 tty_redraw_region(tty, ctx);
1816 return;
1817 }
1818
1819 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1820 ctx->s->hyperlinks);
1821
1822 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1823 tty_margin_off(tty);
1824 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1825
1826 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1827 tty->cx = tty->cy = UINT_MAX;
1828 }
1829
1830 void
1831 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1832 {
1833 struct client *c = tty->client;
1834
1835 if (ctx->bigger ||
1836 !tty_full_width(tty, ctx) ||
1837 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1838 !tty_term_has(tty->term, TTYC_CSR) ||
1839 !tty_term_has(tty->term, TTYC_DL1) ||
1840 ctx->sx == 1 ||
1841 ctx->sy == 1 ||
1842 c->overlay_check != NULL) {
1843 tty_redraw_region(tty, ctx);
1844 return;
1845 }
1846
1847 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1848 ctx->s->hyperlinks);
1849
1850 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1851 tty_margin_off(tty);
1852 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1853
1854 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1855 tty->cx = tty->cy = UINT_MAX;
1856 }
1857
1858 void
1859 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1860 {
1861 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1862 ctx->s->hyperlinks);
1863
1864 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1865 }
1866
1867 void
1868 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1869 {
1870 u_int nx = ctx->sx - ctx->ocx;
1871
1872 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1873 ctx->s->hyperlinks);
1874
1875 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1876 }
1877
1878 void
1879 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1880 {
1881 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1882 ctx->s->hyperlinks);
1883
1884 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1885 }
1886
1887 void
1888 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1889 {
1890 struct client *c = tty->client;
1891
1892 if (ctx->ocy != ctx->orupper)
1893 return;
1894
1895 if (ctx->bigger ||
1896 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1897 tty_fake_bce(tty, &ctx->defaults, 8) ||
1898 !tty_term_has(tty->term, TTYC_CSR) ||
1899 (!tty_term_has(tty->term, TTYC_RI) &&
1900 !tty_term_has(tty->term, TTYC_RIN)) ||
1901 ctx->sx == 1 ||
1902 ctx->sy == 1 ||
1903 c->overlay_check != NULL) {
1904 tty_redraw_region(tty, ctx);
1905 return;
1906 }
1907
1908 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1909 ctx->s->hyperlinks);
1910
1911 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1912 tty_margin_pane(tty, ctx);
1913 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1914
1915 if (tty_term_has(tty->term, TTYC_RI))
1916 tty_putcode(tty, TTYC_RI);
1917 else
1918 tty_putcode_i(tty, TTYC_RIN, 1);
1919 }
1920
1921 void
1922 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1923 {
1924 struct client *c = tty->client;
1925
1926 if (ctx->ocy != ctx->orlower)
1927 return;
1928
1929 if (ctx->bigger ||
1930 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1931 tty_fake_bce(tty, &ctx->defaults, 8) ||
1932 !tty_term_has(tty->term, TTYC_CSR) ||
1933 ctx->sx == 1 ||
1934 ctx->sy == 1 ||
1935 c->overlay_check != NULL) {
1936 tty_redraw_region(tty, ctx);
1937 return;
1938 }
1939
1940 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1941 ctx->s->hyperlinks);
1942
1943 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1944 tty_margin_pane(tty, ctx);
1945
1946 /*
1947 * If we want to wrap a pane while using margins, the cursor needs to
1948 * be exactly on the right of the region. If the cursor is entirely off
1949 * the edge - move it back to the right. Some terminals are funny about
1950 * this and insert extra spaces, so only use the right if margins are
1951 * enabled.
1952 */
1953 if (ctx->xoff + ctx->ocx > tty->rright) {
1954 if (!tty_use_margin(tty))
1955 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1956 else
1957 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1958 } else
1959 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1960
1961 tty_putc(tty, '\n');
1962 }
1963
1964 void
1965 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1966 {
1967 struct client *c = tty->client;
1968 u_int i;
1969
1970 if (ctx->bigger ||
1971 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1972 tty_fake_bce(tty, &ctx->defaults, 8) ||
1973 !tty_term_has(tty->term, TTYC_CSR) ||
1974 ctx->sx == 1 ||
1975 ctx->sy == 1 ||
1976 c->overlay_check != NULL) {
1977 tty_redraw_region(tty, ctx);
1978 return;
1979 }
1980
1981 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1982 ctx->s->hyperlinks);
1983
1984 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1985 tty_margin_pane(tty, ctx);
1986
1987 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1988 if (!tty_use_margin(tty))
1989 tty_cursor(tty, 0, tty->rlower);
1990 else
1991 tty_cursor(tty, tty->rright, tty->rlower);
1992 for (i = 0; i < ctx->num; i++)
1993 tty_putc(tty, '\n');
1994 } else {
1995 if (tty->cy == UINT_MAX)
1996 tty_cursor(tty, 0, 0);
1997 else
1998 tty_cursor(tty, 0, tty->cy);
1999 tty_putcode_i(tty, TTYC_INDN, ctx->num);
2000 }
2001 }
2002
2003 void
2004 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
2005 {
2006 u_int i;
2007 struct client *c = tty->client;
2008
2009 if (ctx->bigger ||
2010 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
2011 tty_fake_bce(tty, &ctx->defaults, 8) ||
2012 !tty_term_has(tty->term, TTYC_CSR) ||
2013 (!tty_term_has(tty->term, TTYC_RI) &&
2014 !tty_term_has(tty->term, TTYC_RIN)) ||
2015 ctx->sx == 1 ||
2016 ctx->sy == 1 ||
2017 c->overlay_check != NULL) {
2018 tty_redraw_region(tty, ctx);
2019 return;
2020 }
2021
2022 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2023 ctx->s->hyperlinks);
2024
2025 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2026 tty_margin_pane(tty, ctx);
2027 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
2028
2029 if (tty_term_has(tty->term, TTYC_RIN))
2030 tty_putcode_i(tty, TTYC_RIN, ctx->num);
2031 else {
2032 for (i = 0; i < ctx->num; i++)
2033 tty_putcode(tty, TTYC_RI);
2034 }
2035 }
2036
2037 void
2038 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
2039 {
2040 u_int px, py, nx, ny;
2041
2042 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2043 ctx->s->hyperlinks);
2044
2045 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2046 tty_margin_off(tty);
2047
2048 px = 0;
2049 nx = ctx->sx;
2050 py = ctx->ocy + 1;
2051 ny = ctx->sy - ctx->ocy - 1;
2052
2053 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2054
2055 px = ctx->ocx;
2056 nx = ctx->sx - ctx->ocx;
2057 py = ctx->ocy;
2058
2059 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
2060 }
2061
2062 void
2063 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
2064 {
2065 u_int px, py, nx, ny;
2066
2067 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2068 ctx->s->hyperlinks);
2069
2070 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2071 tty_margin_off(tty);
2072
2073 px = 0;
2074 nx = ctx->sx;
2075 py = 0;
2076 ny = ctx->ocy;
2077
2078 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2079
2080 px = 0;
2081 nx = ctx->ocx + 1;
2082 py = ctx->ocy;
2083
2084 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
2085 }
2086
2087 void
2088 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
2089 {
2090 u_int px, py, nx, ny;
2091
2092 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2093 ctx->s->hyperlinks);
2094
2095 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2096 tty_margin_off(tty);
2097
2098 px = 0;
2099 nx = ctx->sx;
2100 py = 0;
2101 ny = ctx->sy;
2102
2103 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2104 }
2105
2106 void
2107 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2108 {
2109 u_int i, j;
2110
2111 if (ctx->bigger) {
2112 ctx->redraw_cb(ctx);
2113 return;
2114 }
2115
2116 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2117 ctx->s->hyperlinks);
2118
2119 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2120 tty_margin_off(tty);
2121
2122 for (j = 0; j < ctx->sy; j++) {
2123 tty_cursor_pane(tty, ctx, 0, j);
2124 for (i = 0; i < ctx->sx; i++)
2125 tty_putc(tty, 'E');
2126 }
2127 }
2128
2129 void
2130 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2131 {
2132 const struct grid_cell *gcp = ctx->cell;
2133 struct screen *s = ctx->s;
2134 struct overlay_ranges r;
2135 u_int px, py, i, vis = 0;
2136
2137 px = ctx->xoff + ctx->ocx - ctx->wox;
2138 py = ctx->yoff + ctx->ocy - ctx->woy;
2139 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2140 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2141 return;
2142
2143 /* Handle partially obstructed wide characters. */
2144 if (gcp->data.width > 1) {
2145 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2146 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2147 vis += r.nx[i];
2148 if (vis < gcp->data.width) {
2149 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2150 px, py, &ctx->defaults, ctx->palette);
2151 return;
2152 }
2153 }
2154
2155 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2156 ctx->ocy == ctx->orlower &&
2157 tty_full_width(tty, ctx))
2158 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2159
2160 tty_margin_off(tty);
2161 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2162
2163 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2164 ctx->s->hyperlinks);
2165
2166 if (ctx->num == 1)
2167 tty_invalidate(tty);
2168 }
2169
2170 void
2171 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2172 {
2173 struct overlay_ranges r;
2174 u_int i, px, py, cx;
2175 char *cp = ctx->ptr;
2176
2177 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2178 return;
2179
2180 if (ctx->bigger &&
2181 (ctx->xoff + ctx->ocx < ctx->wox ||
2182 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2183 if (!ctx->wrapped ||
2184 !tty_full_width(tty, ctx) ||
2185 (tty->term->flags & TERM_NOAM) ||
2186 ctx->xoff + ctx->ocx != 0 ||
2187 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2188 tty->cx < tty->sx ||
2189 tty->cy == tty->rlower)
2190 tty_draw_pane(tty, ctx, ctx->ocy);
2191 else
2192 ctx->redraw_cb(ctx);
2193 return;
2194 }
2195
2196 tty_margin_off(tty);
2197 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2198 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2199
2200 /* Get tty position from pane position for overlay check. */
2201 px = ctx->xoff + ctx->ocx - ctx->wox;
2202 py = ctx->yoff + ctx->ocy - ctx->woy;
2203
2204 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2205 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2206 if (r.nx[i] == 0)
2207 continue;
2208 /* Convert back to pane position for printing. */
2209 cx = r.px[i] - ctx->xoff + ctx->wox;
2210 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2211 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2212 }
2213 }
2214
2215 void
2216 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2217 {
2218 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2219 }
2220
2221 void
2222 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2223 size_t len)
2224 {
2225 char *encoded;
2226 size_t size;
2227
2228 if (~tty->flags & TTY_STARTED)
2229 return;
2230 if (!tty_term_has(tty->term, TTYC_MS))
2231 return;
2232
2233 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2234 encoded = xmalloc(size);
2235
2236 b64_ntop(buf, len, encoded, size);
2237 tty->flags |= TTY_NOBLOCK;
2238 tty_putcode_ss(tty, TTYC_MS, flags, encoded);
2239
2240 free(encoded);
2241 }
2242
2243 void
2244 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2245 {
2246 tty->flags |= TTY_NOBLOCK;
2247 tty_add(tty, ctx->ptr, ctx->num);
2248 tty_invalidate(tty);
2249 }
2250
2251 #ifdef ENABLE_SIXEL
2252 void
2253 tty_cmd_sixelimage(struct tty *tty, const struct tty_ctx *ctx)
2254 {
2255 struct image *im = ctx->ptr;
2256 struct sixel_image *si = im->data;
2257 struct sixel_image *new;
2258 char *data;
2259 size_t size;
2260 u_int cx = ctx->ocx, cy = ctx->ocy, sx, sy;
2261 u_int i, j, x, y, rx, ry;
2262 int fallback = 0;
2263
2264 if ((~tty->term->flags & TERM_SIXEL) &&
2265 !tty_term_has(tty->term, TTYC_SXL))
2266 fallback = 1;
2267 if (tty->xpixel == 0 || tty->ypixel == 0)
2268 fallback = 1;
2269
2270 sixel_size_in_cells(si, &sx, &sy);
2271 log_debug("%s: image is %ux%u", __func__, sx, sy);
2272 if (!tty_clamp_area(tty, ctx, cx, cy, sx, sy, &i, &j, &x, &y, &rx, &ry))
2273 return;
2274 log_debug("%s: clamping to %u,%u-%u,%u", __func__, i, j, rx, ry);
2275
2276 if (fallback == 1) {
2277 data = xstrdup(im->fallback);
2278 size = strlen(data);
2279 } else {
2280 new = sixel_scale(si, tty->xpixel, tty->ypixel, i, j, rx, ry, 0);
2281 if (new == NULL)
2282 return;
2283
2284 data = sixel_print(new, si, &size);
2285 }
2286 if (data != NULL) {
2287 log_debug("%s: %zu bytes: %s", __func__, size, data);
2288 tty_region_off(tty);
2289 tty_margin_off(tty);
2290 tty_cursor(tty, x, y);
2291
2292 tty->flags |= TTY_NOBLOCK;
2293 tty_add(tty, data, size);
2294 tty_invalidate(tty);
2295 free(data);
2296 }
2297
2298 if (fallback == 0)
2299 sixel_free(new);
2300 }
2301 #endif
2302
2303 void
2304 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2305 {
2306 if (ctx->num == 0x11) {
2307 /*
2308 * This is an overlay and a command that moves the cursor so
2309 * start synchronized updates.
2310 */
2311 tty_sync_start(tty);
2312 } else if (~ctx->num & 0x10) {
2313 /*
2314 * This is a pane. If there is an overlay, always start;
2315 * otherwise, only if requested.
2316 */
2317 if (ctx->num || tty->client->overlay_draw != NULL)
2318 tty_sync_start(tty);
2319 }
2320 }
2321
2322 void
2323 tty_cell(struct tty *tty, const struct grid_cell *gc,
2324 const struct grid_cell *defaults, struct colour_palette *palette,
2325 struct hyperlinks *hl)
2326 {
2327 const struct grid_cell *gcp;
2328
2329 /* Skip last character if terminal is stupid. */
2330 if ((tty->term->flags & TERM_NOAM) &&
2331 tty->cy == tty->sy - 1 &&
2332 tty->cx == tty->sx - 1)
2333 return;
2334
2335 /* If this is a padding character, do nothing. */
2336 if (gc->flags & GRID_FLAG_PADDING)
2337 return;
2338
2339 /* Check the output codeset and apply attributes. */
2340 gcp = tty_check_codeset(tty, gc);
2341 tty_attributes(tty, gcp, defaults, palette, hl);
2342
2343 /* If it is a single character, write with putc to handle ACS. */
2344 if (gcp->data.size == 1) {
2345 tty_attributes(tty, gcp, defaults, palette, hl);
2346 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2347 return;
2348 tty_putc(tty, *gcp->data.data);
2349 return;
2350 }
2351
2352 /* Write the data. */
2353 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2354 }
2355
2356 void
2357 tty_reset(struct tty *tty)
2358 {
2359 struct grid_cell *gc = &tty->cell;
2360
2361 if (!grid_cells_equal(gc, &grid_default_cell)) {
2362 if (gc->link != 0)
2363 tty_putcode_ss(tty, TTYC_HLS, "", "");
2364 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2365 tty_putcode(tty, TTYC_RMACS);
2366 tty_putcode(tty, TTYC_SGR0);
2367 memcpy(gc, &grid_default_cell, sizeof *gc);
2368 }
2369 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2370 }
2371
2372 static void
2373 tty_invalidate(struct tty *tty)
2374 {
2375 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2376 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2377
2378 tty->cx = tty->cy = UINT_MAX;
2379 tty->rupper = tty->rleft = UINT_MAX;
2380 tty->rlower = tty->rright = UINT_MAX;
2381
2382 if (tty->flags & TTY_STARTED) {
2383 if (tty_use_margin(tty))
2384 tty_putcode(tty, TTYC_ENMG);
2385 tty_putcode(tty, TTYC_SGR0);
2386
2387 tty->mode = ALL_MODES;
2388 tty_update_mode(tty, MODE_CURSOR, NULL);
2389
2390 tty_cursor(tty, 0, 0);
2391 tty_region_off(tty);
2392 tty_margin_off(tty);
2393 } else
2394 tty->mode = MODE_CURSOR;
2395 }
2396
2397 /* Turn off margin. */
2398 void
2399 tty_region_off(struct tty *tty)
2400 {
2401 tty_region(tty, 0, tty->sy - 1);
2402 }
2403
2404 /* Set region inside pane. */
2405 static void
2406 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2407 u_int rlower)
2408 {
2409 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2410 ctx->yoff + rlower - ctx->woy);
2411 }
2412
2413 /* Set region at absolute position. */
2414 static void
2415 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2416 {
2417 if (tty->rlower == rlower && tty->rupper == rupper)
2418 return;
2419 if (!tty_term_has(tty->term, TTYC_CSR))
2420 return;
2421
2422 tty->rupper = rupper;
2423 tty->rlower = rlower;
2424
2425 /*
2426 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2427 * 0,0 if it is beyond the last column (they do not reset their wrap
2428 * flag so further output causes a line feed). As a workaround, do an
2429 * explicit move to 0 first.
2430 */
2431 if (tty->cx >= tty->sx) {
2432 if (tty->cy == UINT_MAX)
2433 tty_cursor(tty, 0, 0);
2434 else
2435 tty_cursor(tty, 0, tty->cy);
2436 }
2437
2438 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2439 tty->cx = tty->cy = UINT_MAX;
2440 }
2441
2442 /* Turn off margin. */
2443 void
2444 tty_margin_off(struct tty *tty)
2445 {
2446 tty_margin(tty, 0, tty->sx - 1);
2447 }
2448
2449 /* Set margin inside pane. */
2450 static void
2451 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2452 {
2453 tty_margin(tty, ctx->xoff - ctx->wox,
2454 ctx->xoff + ctx->sx - 1 - ctx->wox);
2455 }
2456
2457 /* Set margin at absolute position. */
2458 static void
2459 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2460 {
2461 if (!tty_use_margin(tty))
2462 return;
2463 if (tty->rleft == rleft && tty->rright == rright)
2464 return;
2465
2466 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2467
2468 tty->rleft = rleft;
2469 tty->rright = rright;
2470
2471 if (rleft == 0 && rright == tty->sx - 1)
2472 tty_putcode(tty, TTYC_CLMG);
2473 else
2474 tty_putcode_ii(tty, TTYC_CMG, rleft, rright);
2475 tty->cx = tty->cy = UINT_MAX;
2476 }
2477
2478 /*
2479 * Move the cursor, unless it would wrap itself when the next character is
2480 * printed.
2481 */
2482 static void
2483 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2484 u_int cx, u_int cy)
2485 {
2486 if (!ctx->wrapped ||
2487 !tty_full_width(tty, ctx) ||
2488 (tty->term->flags & TERM_NOAM) ||
2489 ctx->xoff + cx != 0 ||
2490 ctx->yoff + cy != tty->cy + 1 ||
2491 tty->cx < tty->sx ||
2492 tty->cy == tty->rlower)
2493 tty_cursor_pane(tty, ctx, cx, cy);
2494 else
2495 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2496 }
2497
2498 /* Move cursor inside pane. */
2499 static void
2500 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2501 {
2502 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2503 }
2504
2505 /* Move cursor to absolute position. */
2506 void
2507 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2508 {
2509 struct tty_term *term = tty->term;
2510 u_int thisx, thisy;
2511 int change;
2512
2513 if (tty->flags & TTY_BLOCK)
2514 return;
2515
2516 thisx = tty->cx;
2517 thisy = tty->cy;
2518
2519 /*
2520 * If in the automargin space, and want to be there, do not move.
2521 * Otherwise, force the cursor to be in range (and complain).
2522 */
2523 if (cx == thisx && cy == thisy && cx == tty->sx)
2524 return;
2525 if (cx > tty->sx - 1) {
2526 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2527 cx = tty->sx - 1;
2528 }
2529
2530 /* No change. */
2531 if (cx == thisx && cy == thisy)
2532 return;
2533
2534 /* Currently at the very end of the line - use absolute movement. */
2535 if (thisx > tty->sx - 1)
2536 goto absolute;
2537
2538 /* Move to home position (0, 0). */
2539 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2540 tty_putcode(tty, TTYC_HOME);
2541 goto out;
2542 }
2543
2544 /* Zero on the next line. */
2545 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2546 (!tty_use_margin(tty) || tty->rleft == 0)) {
2547 tty_putc(tty, '\r');
2548 tty_putc(tty, '\n');
2549 goto out;
2550 }
2551
2552 /* Moving column or row. */
2553 if (cy == thisy) {
2554 /*
2555 * Moving column only, row staying the same.
2556 */
2557
2558 /* To left edge. */
2559 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2560 tty_putc(tty, '\r');
2561 goto out;
2562 }
2563
2564 /* One to the left. */
2565 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2566 tty_putcode(tty, TTYC_CUB1);
2567 goto out;
2568 }
2569
2570 /* One to the right. */
2571 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2572 tty_putcode(tty, TTYC_CUF1);
2573 goto out;
2574 }
2575
2576 /* Calculate difference. */
2577 change = thisx - cx; /* +ve left, -ve right */
2578
2579 /*
2580 * Use HPA if change is larger than absolute, otherwise move
2581 * the cursor with CUB/CUF.
2582 */
2583 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2584 tty_putcode_i(tty, TTYC_HPA, cx);
2585 goto out;
2586 } else if (change > 0 &&
2587 tty_term_has(term, TTYC_CUB) &&
2588 !tty_use_margin(tty)) {
2589 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2590 tty_putcode(tty, TTYC_CUB1);
2591 tty_putcode(tty, TTYC_CUB1);
2592 goto out;
2593 }
2594 tty_putcode_i(tty, TTYC_CUB, change);
2595 goto out;
2596 } else if (change < 0 &&
2597 tty_term_has(term, TTYC_CUF) &&
2598 !tty_use_margin(tty)) {
2599 tty_putcode_i(tty, TTYC_CUF, -change);
2600 goto out;
2601 }
2602 } else if (cx == thisx) {
2603 /*
2604 * Moving row only, column staying the same.
2605 */
2606
2607 /* One above. */
2608 if (thisy != tty->rupper &&
2609 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2610 tty_putcode(tty, TTYC_CUU1);
2611 goto out;
2612 }
2613
2614 /* One below. */
2615 if (thisy != tty->rlower &&
2616 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2617 tty_putcode(tty, TTYC_CUD1);
2618 goto out;
2619 }
2620
2621 /* Calculate difference. */
2622 change = thisy - cy; /* +ve up, -ve down */
2623
2624 /*
2625 * Try to use VPA if change is larger than absolute or if this
2626 * change would cross the scroll region, otherwise use CUU/CUD.
2627 */
2628 if ((u_int) abs(change) > cy ||
2629 (change < 0 && cy - change > tty->rlower) ||
2630 (change > 0 && cy - change < tty->rupper)) {
2631 if (tty_term_has(term, TTYC_VPA)) {
2632 tty_putcode_i(tty, TTYC_VPA, cy);
2633 goto out;
2634 }
2635 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2636 tty_putcode_i(tty, TTYC_CUU, change);
2637 goto out;
2638 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2639 tty_putcode_i(tty, TTYC_CUD, -change);
2640 goto out;
2641 }
2642 }
2643
2644 absolute:
2645 /* Absolute movement. */
2646 tty_putcode_ii(tty, TTYC_CUP, cy, cx);
2647
2648 out:
2649 tty->cx = cx;
2650 tty->cy = cy;
2651 }
2652
2653 static void
2654 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2655 struct hyperlinks *hl)
2656 {
2657 const char *uri, *id;
2658
2659 if (gc->link == tty->cell.link)
2660 return;
2661 tty->cell.link = gc->link;
2662
2663 if (hl == NULL)
2664 return;
2665
2666 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2667 tty_putcode_ss(tty, TTYC_HLS, "", "");
2668 else
2669 tty_putcode_ss(tty, TTYC_HLS, id, uri);
2670 }
2671
2672 void
2673 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2674 const struct grid_cell *defaults, struct colour_palette *palette,
2675 struct hyperlinks *hl)
2676 {
2677 struct grid_cell *tc = &tty->cell, gc2;
2678 int changed;
2679
2680 /* Copy cell and update default colours. */
2681 memcpy(&gc2, gc, sizeof gc2);
2682 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2683 if (gc2.fg == 8)
2684 gc2.fg = defaults->fg;
2685 if (gc2.bg == 8)
2686 gc2.bg = defaults->bg;
2687 }
2688
2689 /* Ignore cell if it is the same as the last one. */
2690 if (gc2.attr == tty->last_cell.attr &&
2691 gc2.fg == tty->last_cell.fg &&
2692 gc2.bg == tty->last_cell.bg &&
2693 gc2.us == tty->last_cell.us &&
2694 gc2.link == tty->last_cell.link)
2695 return;
2696
2697 /*
2698 * If no setab, try to use the reverse attribute as a best-effort for a
2699 * non-default background. This is a bit of a hack but it doesn't do
2700 * any serious harm and makes a couple of applications happier.
2701 */
2702 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2703 if (gc2.attr & GRID_ATTR_REVERSE) {
2704 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2705 gc2.attr &= ~GRID_ATTR_REVERSE;
2706 } else {
2707 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2708 gc2.attr |= GRID_ATTR_REVERSE;
2709 }
2710 }
2711
2712 /* Fix up the colours if necessary. */
2713 tty_check_fg(tty, palette, &gc2);
2714 tty_check_bg(tty, palette, &gc2);
2715 tty_check_us(tty, palette, &gc2);
2716
2717 /*
2718 * If any bits are being cleared or the underline colour is now default,
2719 * reset everything.
2720 */
2721 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2722 tty_reset(tty);
2723
2724 /*
2725 * Set the colours. This may call tty_reset() (so it comes next) and
2726 * may add to (NOT remove) the desired attributes.
2727 */
2728 tty_colours(tty, &gc2);
2729
2730 /* Filter out attribute bits already set. */
2731 changed = gc2.attr & ~tc->attr;
2732 tc->attr = gc2.attr;
2733
2734 /* Set the attributes. */
2735 if (changed & GRID_ATTR_BRIGHT)
2736 tty_putcode(tty, TTYC_BOLD);
2737 if (changed & GRID_ATTR_DIM)
2738 tty_putcode(tty, TTYC_DIM);
2739 if (changed & GRID_ATTR_ITALICS)
2740 tty_set_italics(tty);
2741 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2742 if ((changed & GRID_ATTR_UNDERSCORE) ||
2743 !tty_term_has(tty->term, TTYC_SMULX))
2744 tty_putcode(tty, TTYC_SMUL);
2745 else if (changed & GRID_ATTR_UNDERSCORE_2)
2746 tty_putcode_i(tty, TTYC_SMULX, 2);
2747 else if (changed & GRID_ATTR_UNDERSCORE_3)
2748 tty_putcode_i(tty, TTYC_SMULX, 3);
2749 else if (changed & GRID_ATTR_UNDERSCORE_4)
2750 tty_putcode_i(tty, TTYC_SMULX, 4);
2751 else if (changed & GRID_ATTR_UNDERSCORE_5)
2752 tty_putcode_i(tty, TTYC_SMULX, 5);
2753 }
2754 if (changed & GRID_ATTR_BLINK)
2755 tty_putcode(tty, TTYC_BLINK);
2756 if (changed & GRID_ATTR_REVERSE) {
2757 if (tty_term_has(tty->term, TTYC_REV))
2758 tty_putcode(tty, TTYC_REV);
2759 else if (tty_term_has(tty->term, TTYC_SMSO))
2760 tty_putcode(tty, TTYC_SMSO);
2761 }
2762 if (changed & GRID_ATTR_HIDDEN)
2763 tty_putcode(tty, TTYC_INVIS);
2764 if (changed & GRID_ATTR_STRIKETHROUGH)
2765 tty_putcode(tty, TTYC_SMXX);
2766 if (changed & GRID_ATTR_OVERLINE)
2767 tty_putcode(tty, TTYC_SMOL);
2768 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2769 tty_putcode(tty, TTYC_SMACS);
2770
2771 /* Set hyperlink if any. */
2772 tty_hyperlink(tty, gc, hl);
2773
2774 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2775 }
2776
2777 static void
2778 tty_colours(struct tty *tty, const struct grid_cell *gc)
2779 {
2780 struct grid_cell *tc = &tty->cell;
2781 int have_ax;
2782
2783 /* No changes? Nothing is necessary. */
2784 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2785 return;
2786
2787 /*
2788 * Is either the default colour? This is handled specially because the
2789 * best solution might be to reset both colours to default, in which
2790 * case if only one is default need to fall onward to set the other
2791 * colour.
2792 */
2793 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2794 /*
2795 * If don't have AX but do have op, send sgr0 (op can't
2796 * actually be used because it is sometimes the same as sgr0
2797 * and sometimes isn't). This resets both colours to default.
2798 *
2799 * Otherwise, try to set the default colour only as needed.
2800 */
2801 have_ax = tty_term_flag(tty->term, TTYC_AX);
2802 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2803 tty_reset(tty);
2804 else {
2805 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2806 if (have_ax)
2807 tty_puts(tty, "\033[39m");
2808 else if (tc->fg != 7)
2809 tty_putcode_i(tty, TTYC_SETAF, 7);
2810 tc->fg = gc->fg;
2811 }
2812 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2813 if (have_ax)
2814 tty_puts(tty, "\033[49m");
2815 else if (tc->bg != 0)
2816 tty_putcode_i(tty, TTYC_SETAB, 0);
2817 tc->bg = gc->bg;
2818 }
2819 }
2820 }
2821
2822 /* Set the foreground colour. */
2823 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2824 tty_colours_fg(tty, gc);
2825
2826 /*
2827 * Set the background colour. This must come after the foreground as
2828 * tty_colour_fg() can call tty_reset().
2829 */
2830 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2831 tty_colours_bg(tty, gc);
2832
2833 /* Set the underscore colour. */
2834 if (gc->us != tc->us)
2835 tty_colours_us(tty, gc);
2836 }
2837
2838 static void
2839 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2840 struct grid_cell *gc)
2841 {
2842 u_char r, g, b;
2843 u_int colours;
2844 int c;
2845
2846 /*
2847 * Perform substitution if this pane has a palette. If the bright
2848 * attribute is set and Nobr is not present, use the bright entry in
2849 * the palette by changing to the aixterm colour
2850 */
2851 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2852 c = gc->fg;
2853 if (c < 8 &&
2854 gc->attr & GRID_ATTR_BRIGHT &&
2855 !tty_term_has(tty->term, TTYC_NOBR))
2856 c += 90;
2857 if ((c = colour_palette_get(palette, c)) != -1)
2858 gc->fg = c;
2859 }
2860
2861 /* Is this a 24-bit colour? */
2862 if (gc->fg & COLOUR_FLAG_RGB) {
2863 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2864 if (tty->term->flags & TERM_RGBCOLOURS)
2865 return;
2866 colour_split_rgb(gc->fg, &r, &g, &b);
2867 gc->fg = colour_find_rgb(r, g, b);
2868 }
2869
2870 /* How many colours does this terminal have? */
2871 if (tty->term->flags & TERM_256COLOURS)
2872 colours = 256;
2873 else
2874 colours = tty_term_number(tty->term, TTYC_COLORS);
2875
2876 /* Is this a 256-colour colour? */
2877 if (gc->fg & COLOUR_FLAG_256) {
2878 /* And not a 256 colour mode? */
2879 if (colours < 256) {
2880 gc->fg = colour_256to16(gc->fg);
2881 if (gc->fg & 8) {
2882 gc->fg &= 7;
2883 if (colours >= 16)
2884 gc->fg += 90;
2885 }
2886 }
2887 return;
2888 }
2889
2890 /* Is this an aixterm colour? */
2891 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2892 gc->fg -= 90;
2893 gc->attr |= GRID_ATTR_BRIGHT;
2894 }
2895 }
2896
2897 static void
2898 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2899 struct grid_cell *gc)
2900 {
2901 u_char r, g, b;
2902 u_int colours;
2903 int c;
2904
2905 /* Perform substitution if this pane has a palette. */
2906 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2907 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2908 gc->bg = c;
2909 }
2910
2911 /* Is this a 24-bit colour? */
2912 if (gc->bg & COLOUR_FLAG_RGB) {
2913 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2914 if (tty->term->flags & TERM_RGBCOLOURS)
2915 return;
2916 colour_split_rgb(gc->bg, &r, &g, &b);
2917 gc->bg = colour_find_rgb(r, g, b);
2918 }
2919
2920 /* How many colours does this terminal have? */
2921 if (tty->term->flags & TERM_256COLOURS)
2922 colours = 256;
2923 else
2924 colours = tty_term_number(tty->term, TTYC_COLORS);
2925
2926 /* Is this a 256-colour colour? */
2927 if (gc->bg & COLOUR_FLAG_256) {
2928 /*
2929 * And not a 256 colour mode? Translate to 16-colour
2930 * palette. Bold background doesn't exist portably, so just
2931 * discard the bold bit if set.
2932 */
2933 if (colours < 256) {
2934 gc->bg = colour_256to16(gc->bg);
2935 if (gc->bg & 8) {
2936 gc->bg &= 7;
2937 if (colours >= 16)
2938 gc->bg += 90;
2939 }
2940 }
2941 return;
2942 }
2943
2944 /* Is this an aixterm colour? */
2945 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2946 gc->bg -= 90;
2947 }
2948
2949 static void
2950 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2951 struct grid_cell *gc)
2952 {
2953 int c;
2954
2955 /* Perform substitution if this pane has a palette. */
2956 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2957 if ((c = colour_palette_get(palette, gc->us)) != -1)
2958 gc->us = c;
2959 }
2960
2961 /* Convert underscore colour if only RGB can be supported. */
2962 if (!tty_term_has(tty->term, TTYC_SETULC1)) {
2963 if ((c = colour_force_rgb (gc->us)) == -1)
2964 gc->us = 8;
2965 else
2966 gc->us = c;
2967 }
2968 }
2969
2970 static void
2971 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2972 {
2973 struct grid_cell *tc = &tty->cell;
2974 char s[32];
2975
2976 /* Is this a 24-bit or 256-colour colour? */
2977 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2978 if (tty_try_colour(tty, gc->fg, "38") == 0)
2979 goto save;
2980 /* Should not get here, already converted in tty_check_fg. */
2981 return;
2982 }
2983
2984 /* Is this an aixterm bright colour? */
2985 if (gc->fg >= 90 && gc->fg <= 97) {
2986 if (tty->term->flags & TERM_256COLOURS) {
2987 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2988 tty_puts(tty, s);
2989 } else
2990 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8);
2991 goto save;
2992 }
2993
2994 /* Otherwise set the foreground colour. */
2995 tty_putcode_i(tty, TTYC_SETAF, gc->fg);
2996
2997 save:
2998 /* Save the new values in the terminal current cell. */
2999 tc->fg = gc->fg;
3000 }
3001
3002 static void
3003 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
3004 {
3005 struct grid_cell *tc = &tty->cell;
3006 char s[32];
3007
3008 /* Is this a 24-bit or 256-colour colour? */
3009 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
3010 if (tty_try_colour(tty, gc->bg, "48") == 0)
3011 goto save;
3012 /* Should not get here, already converted in tty_check_bg. */
3013 return;
3014 }
3015
3016 /* Is this an aixterm bright colour? */
3017 if (gc->bg >= 90 && gc->bg <= 97) {
3018 if (tty->term->flags & TERM_256COLOURS) {
3019 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
3020 tty_puts(tty, s);
3021 } else
3022 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8);
3023 goto save;
3024 }
3025
3026 /* Otherwise set the background colour. */
3027 tty_putcode_i(tty, TTYC_SETAB, gc->bg);
3028
3029 save:
3030 /* Save the new values in the terminal current cell. */
3031 tc->bg = gc->bg;
3032 }
3033
3034 static void
3035 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
3036 {
3037 struct grid_cell *tc = &tty->cell;
3038 u_int c;
3039 u_char r, g, b;
3040
3041 /* Clear underline colour. */
3042 if (COLOUR_DEFAULT(gc->us)) {
3043 tty_putcode(tty, TTYC_OL);
3044 goto save;
3045 }
3046
3047 /*
3048 * If this is not an RGB colour, use Setulc1 if it exists, otherwise
3049 * convert.
3050 */
3051 if (~gc->us & COLOUR_FLAG_RGB) {
3052 c = gc->us;
3053 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97))
3054 c -= 82;
3055 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256);
3056 return;
3057 }
3058
3059 /*
3060 * Setulc and setal follows the ncurses(3) one argument "direct colour"
3061 * capability format. Calculate the colour value.
3062 */
3063 colour_split_rgb(gc->us, &r, &g, &b);
3064 c = (65536 * r) + (256 * g) + b;
3065
3066 /*
3067 * Write the colour. Only use setal if the RGB flag is set because the
3068 * non-RGB version may be wrong.
3069 */
3070 if (tty_term_has(tty->term, TTYC_SETULC))
3071 tty_putcode_i(tty, TTYC_SETULC, c);
3072 else if (tty_term_has(tty->term, TTYC_SETAL) &&
3073 tty_term_has(tty->term, TTYC_RGB))
3074 tty_putcode_i(tty, TTYC_SETAL, c);
3075
3076 save:
3077 /* Save the new values in the terminal current cell. */
3078 tc->us = gc->us;
3079 }
3080
3081 static int
3082 tty_try_colour(struct tty *tty, int colour, const char *type)
3083 {
3084 u_char r, g, b;
3085
3086 if (colour & COLOUR_FLAG_256) {
3087 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
3088 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff);
3089 else if (tty_term_has(tty->term, TTYC_SETAB))
3090 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff);
3091 return (0);
3092 }
3093
3094 if (colour & COLOUR_FLAG_RGB) {
3095 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
3096 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
3097 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b);
3098 else if (tty_term_has(tty->term, TTYC_SETRGBB))
3099 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b);
3100 return (0);
3101 }
3102
3103 return (-1);
3104 }
3105
3106 static void
3107 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
3108 {
3109 memcpy(gc, &grid_default_cell, sizeof *gc);
3110 gc->fg = wp->palette.fg;
3111 gc->bg = wp->palette.bg;
3112 }
3113
3114 void
3115 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
3116 {
3117 struct options *oo = wp->options;
3118 struct format_tree *ft;
3119
3120 memcpy(gc, &grid_default_cell, sizeof *gc);
3121
3122 if (wp->flags & PANE_STYLECHANGED) {
3123 log_debug("%%%u: style changed", wp->id);
3124 wp->flags &= ~PANE_STYLECHANGED;
3125
3126 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
3127 FORMAT_NOJOBS);
3128 format_defaults(ft, NULL, NULL, NULL, wp);
3129 tty_window_default_style(&wp->cached_active_gc, wp);
3130 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
3131 tty_window_default_style(&wp->cached_gc, wp);
3132 style_add(&wp->cached_gc, oo, "window-style", ft);
3133 format_free(ft);
3134 }
3135
3136 if (gc->fg == 8) {
3137 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
3138 gc->fg = wp->cached_active_gc.fg;
3139 else
3140 gc->fg = wp->cached_gc.fg;
3141 }
3142
3143 if (gc->bg == 8) {
3144 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
3145 gc->bg = wp->cached_active_gc.bg;
3146 else
3147 gc->bg = wp->cached_gc.bg;
3148 }
3149 }
3150
3151 static void
3152 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
3153 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
3154 {
3155 struct grid_cell gc;
3156
3157 memcpy(&gc, &grid_default_cell, sizeof gc);
3158 gc.bg = bg;
3159 tty_attributes(tty, &gc, defaults, palette, hl);
3160 }
3161
3162 static void
3163 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
3164 {
3165 struct tty *tty = data;
3166 struct client *c = tty->client;
3167
3168 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3169 free(c->clipboard_panes);
3170 c->clipboard_panes = NULL;
3171 c->clipboard_npanes = 0;
3172
3173 tty->flags &= ~TTY_OSC52QUERY;
3174 }
3175
3176 void
3177 tty_clipboard_query(struct tty *tty)
3178 {
3179 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3180
3181 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3182 return;
3183 tty_putcode_ss(tty, TTYC_MS, "", "?");
3184
3185 tty->flags |= TTY_OSC52QUERY;
3186 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3187 evtimer_add(&tty->clipboard_timer, &tv);
3188 }
tmux -- terminal multiplexer similar to GNU Screen