?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'obsd-master'
[tmux.git] / tty.c
blob359dc137cc4ecdad77b4496fc61b9d9488a4b29e
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 <unistd.h>
32
33 #include "tmux.h"
34
35 static int tty_log_fd = -1;
36
37 static void tty_set_italics(struct tty *);
38 static int tty_try_colour(struct tty *, int, const char *);
39 static void tty_force_cursor_colour(struct tty *, int);
40 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
41 u_int);
42 static void tty_cursor_pane_unless_wrap(struct tty *,
43 const struct tty_ctx *, u_int, u_int);
44 static void tty_invalidate(struct tty *);
45 static void tty_colours(struct tty *, const struct grid_cell *);
46 static void tty_check_fg(struct tty *, struct colour_palette *,
47 struct grid_cell *);
48 static void tty_check_bg(struct tty *, struct colour_palette *,
49 struct grid_cell *);
50 static void tty_check_us(struct tty *, struct colour_palette *,
51 struct grid_cell *);
52 static void tty_colours_fg(struct tty *, const struct grid_cell *);
53 static void tty_colours_bg(struct tty *, const struct grid_cell *);
54 static void tty_colours_us(struct tty *, const struct grid_cell *);
55
56 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
57 u_int);
58 static void tty_region(struct tty *, u_int, u_int);
59 static void tty_margin_pane(struct tty *, const struct tty_ctx *);
60 static void tty_margin(struct tty *, u_int, u_int);
61 static int tty_large_region(struct tty *, const struct tty_ctx *);
62 static int tty_fake_bce(const struct tty *, const struct grid_cell *,
63 u_int);
64 static void tty_redraw_region(struct tty *, const struct tty_ctx *);
65 static void tty_emulate_repeat(struct tty *, enum tty_code_code,
66 enum tty_code_code, u_int);
67 static void tty_repeat_space(struct tty *, u_int);
68 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
69 static void tty_default_attributes(struct tty *, const struct grid_cell *,
70 struct colour_palette *, u_int, struct hyperlinks *);
71 static int tty_check_overlay(struct tty *, u_int, u_int);
72 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
73 struct overlay_ranges *);
74
75 #ifdef ENABLE_SIXEL
76 static void tty_write_one(void (*)(struct tty *, const struct tty_ctx *),
77 struct client *, struct tty_ctx *);
78 #endif
79
80 #define tty_use_margin(tty) \
81 (tty->term->flags & TERM_DECSLRM)
82 #define tty_full_width(tty, ctx) \
83 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
84
85 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
86 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
87 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
88
89 #define TTY_QUERY_TIMEOUT 5
90 #define TTY_REQUEST_LIMIT 30
91
92 void
93 tty_create_log(void)
94 {
95 char name[64];
96
97 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
98
99 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
100 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
101 fatal("fcntl failed");
102 }
103
104 int
105 tty_init(struct tty *tty, struct client *c)
106 {
107 if (!isatty(c->fd))
108 return (-1);
109
110 memset(tty, 0, sizeof *tty);
111 tty->client = c;
112
113 tty->cstyle = SCREEN_CURSOR_DEFAULT;
114 tty->ccolour = -1;
115 tty->fg = tty->bg = -1;
116
117 if (tcgetattr(c->fd, &tty->tio) != 0)
118 return (-1);
119 return (0);
120 }
121
122 void
123 tty_resize(struct tty *tty)
124 {
125 struct client *c = tty->client;
126 struct winsize ws;
127 u_int sx, sy, xpixel, ypixel;
128
129 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
130 sx = ws.ws_col;
131 if (sx == 0) {
132 sx = 80;
133 xpixel = 0;
134 } else
135 xpixel = ws.ws_xpixel / sx;
136 sy = ws.ws_row;
137 if (sy == 0) {
138 sy = 24;
139 ypixel = 0;
140 } else
141 ypixel = ws.ws_ypixel / sy;
142 } else {
143 sx = 80;
144 sy = 24;
145 xpixel = 0;
146 ypixel = 0;
147 }
148 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
149 xpixel, ypixel);
150 tty_set_size(tty, sx, sy, xpixel, ypixel);
151 tty_invalidate(tty);
152 }
153
154 void
155 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
156 {
157 tty->sx = sx;
158 tty->sy = sy;
159 tty->xpixel = xpixel;
160 tty->ypixel = ypixel;
161 }
162
163 static void
164 tty_read_callback(__unused int fd, __unused short events, void *data)
165 {
166 struct tty *tty = data;
167 struct client *c = tty->client;
168 const char *name = c->name;
169 size_t size = EVBUFFER_LENGTH(tty->in);
170 int nread;
171
172 nread = evbuffer_read(tty->in, c->fd, -1);
173 if (nread == 0 || nread == -1) {
174 if (nread == 0)
175 log_debug("%s: read closed", name);
176 else
177 log_debug("%s: read error: %s", name, strerror(errno));
178 event_del(&tty->event_in);
179 server_client_lost(tty->client);
180 return;
181 }
182 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
183
184 while (tty_keys_next(tty))
185 ;
186 }
187
188 static void
189 tty_timer_callback(__unused int fd, __unused short events, void *data)
190 {
191 struct tty *tty = data;
192 struct client *c = tty->client;
193 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
194
195 log_debug("%s: %zu discarded", c->name, tty->discarded);
196
197 c->flags |= CLIENT_ALLREDRAWFLAGS;
198 c->discarded += tty->discarded;
199
200 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
201 tty->flags &= ~TTY_BLOCK;
202 tty_invalidate(tty);
203 return;
204 }
205 tty->discarded = 0;
206 evtimer_add(&tty->timer, &tv);
207 }
208
209 static int
210 tty_block_maybe(struct tty *tty)
211 {
212 struct client *c = tty->client;
213 size_t size = EVBUFFER_LENGTH(tty->out);
214 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
215
216 if (size == 0)
217 tty->flags &= ~TTY_NOBLOCK;
218 else if (tty->flags & TTY_NOBLOCK)
219 return (0);
220
221 if (size < TTY_BLOCK_START(tty))
222 return (0);
223
224 if (tty->flags & TTY_BLOCK)
225 return (1);
226 tty->flags |= TTY_BLOCK;
227
228 log_debug("%s: can't keep up, %zu discarded", c->name, size);
229
230 evbuffer_drain(tty->out, size);
231 c->discarded += size;
232
233 tty->discarded = 0;
234 evtimer_add(&tty->timer, &tv);
235 return (1);
236 }
237
238 static void
239 tty_write_callback(__unused int fd, __unused short events, void *data)
240 {
241 struct tty *tty = data;
242 struct client *c = tty->client;
243 size_t size = EVBUFFER_LENGTH(tty->out);
244 int nwrite;
245
246 nwrite = evbuffer_write(tty->out, c->fd);
247 if (nwrite == -1)
248 return;
249 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
250
251 if (c->redraw > 0) {
252 if ((size_t)nwrite >= c->redraw)
253 c->redraw = 0;
254 else
255 c->redraw -= nwrite;
256 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
257 c->redraw);
258 } else if (tty_block_maybe(tty))
259 return;
260
261 if (EVBUFFER_LENGTH(tty->out) != 0)
262 event_add(&tty->event_out, NULL);
263 }
264
265 int
266 tty_open(struct tty *tty, char **cause)
267 {
268 struct client *c = tty->client;
269
270 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
271 c->term_ncaps, &c->term_features, cause);
272 if (tty->term == NULL) {
273 tty_close(tty);
274 return (-1);
275 }
276 tty->flags |= TTY_OPENED;
277
278 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
279
280 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
281 tty_read_callback, tty);
282 tty->in = evbuffer_new();
283 if (tty->in == NULL)
284 fatal("out of memory");
285
286 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
287 tty->out = evbuffer_new();
288 if (tty->out == NULL)
289 fatal("out of memory");
290
291 evtimer_set(&tty->timer, tty_timer_callback, tty);
292
293 tty_start_tty(tty);
294 tty_keys_build(tty);
295
296 return (0);
297 }
298
299 static void
300 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
301 {
302 struct tty *tty = data;
303 struct client *c = tty->client;
304
305 log_debug("%s: start timer fired", c->name);
306 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
307 tty_update_features(tty);
308 tty->flags |= TTY_ALL_REQUEST_FLAGS;
309 }
310
311 void
312 tty_start_tty(struct tty *tty)
313 {
314 struct client *c = tty->client;
315 struct termios tio;
316 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
317
318 setblocking(c->fd, 0);
319 event_add(&tty->event_in, NULL);
320
321 memcpy(&tio, &tty->tio, sizeof tio);
322 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
323 tio.c_iflag |= IGNBRK;
324 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
325 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
326 ECHOKE|ISIG);
327 tio.c_cc[VMIN] = 1;
328 tio.c_cc[VTIME] = 0;
329 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
330 tcflush(c->fd, TCOFLUSH);
331
332 tty_putcode(tty, TTYC_SMCUP);
333
334 tty_putcode(tty, TTYC_SMKX);
335 tty_putcode(tty, TTYC_CLEAR);
336
337 if (tty_acs_needed(tty)) {
338 log_debug("%s: using capabilities for ACS", c->name);
339 tty_putcode(tty, TTYC_ENACS);
340 } else
341 log_debug("%s: using UTF-8 for ACS", c->name);
342
343 tty_putcode(tty, TTYC_CNORM);
344 if (tty_term_has(tty->term, TTYC_KMOUS)) {
345 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
346 tty_puts(tty, "\033[?1006l\033[?1005l");
347 }
348 if (tty_term_has(tty->term, TTYC_ENBP))
349 tty_putcode(tty, TTYC_ENBP);
350
351 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
352 evtimer_add(&tty->start_timer, &tv);
353
354 tty->flags |= TTY_STARTED;
355 tty_invalidate(tty);
356
357 if (tty->ccolour != -1)
358 tty_force_cursor_colour(tty, -1);
359
360 tty->mouse_drag_flag = 0;
361 tty->mouse_drag_update = NULL;
362 tty->mouse_drag_release = NULL;
363 }
364
365 void
366 tty_send_requests(struct tty *tty)
367 {
368 if (~tty->flags & TTY_STARTED)
369 return;
370
371 if (tty->term->flags & TERM_VT100LIKE) {
372 if (~tty->term->flags & TTY_HAVEDA)
373 tty_puts(tty, "\033[c");
374 if (~tty->flags & TTY_HAVEDA2)
375 tty_puts(tty, "\033[>c");
376 if (~tty->flags & TTY_HAVEXDA)
377 tty_puts(tty, "\033[>q");
378 tty_puts(tty, "\033]10;?\033\\");
379 tty_puts(tty, "\033]11;?\033\\");
380 } else
381 tty->flags |= TTY_ALL_REQUEST_FLAGS;
382 tty->last_requests = time (NULL);
383 }
384
385 void
386 tty_repeat_requests(struct tty *tty)
387 {
388 time_t t = time (NULL);
389
390 if (~tty->flags & TTY_STARTED)
391 return;
392
393 if (t - tty->last_requests <= TTY_REQUEST_LIMIT)
394 return;
395 tty->last_requests = t;
396
397 if (tty->term->flags & TERM_VT100LIKE) {
398 tty_puts(tty, "\033]10;?\033\\");
399 tty_puts(tty, "\033]11;?\033\\");
400 }
401 }
402
403 void
404 tty_stop_tty(struct tty *tty)
405 {
406 struct client *c = tty->client;
407 struct winsize ws;
408
409 if (!(tty->flags & TTY_STARTED))
410 return;
411 tty->flags &= ~TTY_STARTED;
412
413 evtimer_del(&tty->start_timer);
414
415 event_del(&tty->timer);
416 tty->flags &= ~TTY_BLOCK;
417
418 event_del(&tty->event_in);
419 event_del(&tty->event_out);
420
421 /*
422 * Be flexible about error handling and try not kill the server just
423 * because the fd is invalid. Things like ssh -t can easily leave us
424 * with a dead tty.
425 */
426 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
427 return;
428 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
429 return;
430
431 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
432 if (tty_acs_needed(tty))
433 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
434 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
435 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
436 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
437 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
438 if (tty_term_has(tty->term, TTYC_SE))
439 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
440 else if (tty_term_has(tty->term, TTYC_SS))
441 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0));
442 }
443 if (tty->ccolour != -1)
444 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
445
446 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
447 if (tty_term_has(tty->term, TTYC_KMOUS)) {
448 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
449 tty_raw(tty, "\033[?1006l\033[?1005l");
450 }
451 if (tty_term_has(tty->term, TTYC_DSBP))
452 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
453
454 if (tty->term->flags & TERM_VT100LIKE)
455 tty_raw(tty, "\033[?7727l");
456 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
457 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
458
459 if (tty_use_margin(tty))
460 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
461 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
462
463 setblocking(c->fd, 1);
464 }
465
466 void
467 tty_close(struct tty *tty)
468 {
469 if (event_initialized(&tty->key_timer))
470 evtimer_del(&tty->key_timer);
471 tty_stop_tty(tty);
472
473 if (tty->flags & TTY_OPENED) {
474 evbuffer_free(tty->in);
475 event_del(&tty->event_in);
476 evbuffer_free(tty->out);
477 event_del(&tty->event_out);
478
479 tty_term_free(tty->term);
480 tty_keys_free(tty);
481
482 tty->flags &= ~TTY_OPENED;
483 }
484 }
485
486 void
487 tty_free(struct tty *tty)
488 {
489 tty_close(tty);
490 }
491
492 void
493 tty_update_features(struct tty *tty)
494 {
495 struct client *c = tty->client;
496
497 if (tty_apply_features(tty->term, c->term_features))
498 tty_term_apply_overrides(tty->term);
499
500 if (tty_use_margin(tty))
501 tty_putcode(tty, TTYC_ENMG);
502 if (options_get_number(global_options, "extended-keys"))
503 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
504 if (options_get_number(global_options, "focus-events"))
505 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
506 if (tty->term->flags & TERM_VT100LIKE)
507 tty_puts(tty, "\033[?7727h");
508
509 /*
510 * Features might have changed since the first draw during attach. For
511 * example, this happens when DA responses are received.
512 */
513 server_redraw_client(c);
514
515 tty_invalidate(tty);
516 }
517
518 void
519 tty_raw(struct tty *tty, const char *s)
520 {
521 struct client *c = tty->client;
522 ssize_t n, slen;
523 u_int i;
524
525 slen = strlen(s);
526 for (i = 0; i < 5; i++) {
527 n = write(c->fd, s, slen);
528 if (n >= 0) {
529 s += n;
530 slen -= n;
531 if (slen == 0)
532 break;
533 } else if (n == -1 && errno != EAGAIN)
534 break;
535 usleep(100);
536 }
537 }
538
539 void
540 tty_putcode(struct tty *tty, enum tty_code_code code)
541 {
542 tty_puts(tty, tty_term_string(tty->term, code));
543 }
544
545 void
546 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a)
547 {
548 if (a < 0)
549 return;
550 tty_puts(tty, tty_term_string_i(tty->term, code, a));
551 }
552
553 void
554 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b)
555 {
556 if (a < 0 || b < 0)
557 return;
558 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b));
559 }
560
561 void
562 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c)
563 {
564 if (a < 0 || b < 0 || c < 0)
565 return;
566 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c));
567 }
568
569 void
570 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a)
571 {
572 if (a != NULL)
573 tty_puts(tty, tty_term_string_s(tty->term, code, a));
574 }
575
576 void
577 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a,
578 const char *b)
579 {
580 if (a != NULL && b != NULL)
581 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b));
582 }
583
584 static void
585 tty_add(struct tty *tty, const char *buf, size_t len)
586 {
587 struct client *c = tty->client;
588
589 if (tty->flags & TTY_BLOCK) {
590 tty->discarded += len;
591 return;
592 }
593
594 evbuffer_add(tty->out, buf, len);
595 log_debug("%s: %.*s", c->name, (int)len, buf);
596 c->written += len;
597
598 if (tty_log_fd != -1)
599 write(tty_log_fd, buf, len);
600 if (tty->flags & TTY_STARTED)
601 event_add(&tty->event_out, NULL);
602 }
603
604 void
605 tty_puts(struct tty *tty, const char *s)
606 {
607 if (*s != '\0')
608 tty_add(tty, s, strlen(s));
609 }
610
611 void
612 tty_putc(struct tty *tty, u_char ch)
613 {
614 const char *acs;
615
616 if ((tty->term->flags & TERM_NOAM) &&
617 ch >= 0x20 && ch != 0x7f &&
618 tty->cy == tty->sy - 1 &&
619 tty->cx + 1 >= tty->sx)
620 return;
621
622 if (tty->cell.attr & GRID_ATTR_CHARSET) {
623 acs = tty_acs_get(tty, ch);
624 if (acs != NULL)
625 tty_add(tty, acs, strlen(acs));
626 else
627 tty_add(tty, &ch, 1);
628 } else
629 tty_add(tty, &ch, 1);
630
631 if (ch >= 0x20 && ch != 0x7f) {
632 if (tty->cx >= tty->sx) {
633 tty->cx = 1;
634 if (tty->cy != tty->rlower)
635 tty->cy++;
636
637 /*
638 * On !am terminals, force the cursor position to where
639 * we think it should be after a line wrap - this means
640 * it works on sensible terminals as well.
641 */
642 if (tty->term->flags & TERM_NOAM)
643 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx);
644 } else
645 tty->cx++;
646 }
647 }
648
649 void
650 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
651 {
652 if ((tty->term->flags & TERM_NOAM) &&
653 tty->cy == tty->sy - 1 &&
654 tty->cx + len >= tty->sx)
655 len = tty->sx - tty->cx - 1;
656
657 tty_add(tty, buf, len);
658 if (tty->cx + width > tty->sx) {
659 tty->cx = (tty->cx + width) - tty->sx;
660 if (tty->cx <= tty->sx)
661 tty->cy++;
662 else
663 tty->cx = tty->cy = UINT_MAX;
664 } else
665 tty->cx += width;
666 }
667
668 static void
669 tty_set_italics(struct tty *tty)
670 {
671 const char *s;
672
673 if (tty_term_has(tty->term, TTYC_SITM)) {
674 s = options_get_string(global_options, "default-terminal");
675 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
676 tty_putcode(tty, TTYC_SITM);
677 return;
678 }
679 }
680 tty_putcode(tty, TTYC_SMSO);
681 }
682
683 void
684 tty_set_title(struct tty *tty, const char *title)
685 {
686 if (!tty_term_has(tty->term, TTYC_TSL) ||
687 !tty_term_has(tty->term, TTYC_FSL))
688 return;
689
690 tty_putcode(tty, TTYC_TSL);
691 tty_puts(tty, title);
692 tty_putcode(tty, TTYC_FSL);
693 }
694
695 void
696 tty_set_path(struct tty *tty, const char *title)
697 {
698 if (!tty_term_has(tty->term, TTYC_SWD) ||
699 !tty_term_has(tty->term, TTYC_FSL))
700 return;
701
702 tty_putcode(tty, TTYC_SWD);
703 tty_puts(tty, title);
704 tty_putcode(tty, TTYC_FSL);
705 }
706
707 static void
708 tty_force_cursor_colour(struct tty *tty, int c)
709 {
710 u_char r, g, b;
711 char s[13];
712
713 if (c != -1)
714 c = colour_force_rgb(c);
715 if (c == tty->ccolour)
716 return;
717 if (c == -1)
718 tty_putcode(tty, TTYC_CR);
719 else {
720 colour_split_rgb(c, &r, &g, &b);
721 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
722 tty_putcode_s(tty, TTYC_CS, s);
723 }
724 tty->ccolour = c;
725 }
726
727 static int
728 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
729 {
730 enum screen_cursor_style cstyle;
731 int ccolour, changed, cmode = mode;
732
733 /* Set cursor colour if changed. */
734 if (s != NULL) {
735 ccolour = s->ccolour;
736 if (s->ccolour == -1)
737 ccolour = s->default_ccolour;
738 tty_force_cursor_colour(tty, ccolour);
739 }
740
741 /* If cursor is off, set as invisible. */
742 if (~cmode & MODE_CURSOR) {
743 if (tty->mode & MODE_CURSOR)
744 tty_putcode(tty, TTYC_CIVIS);
745 return (cmode);
746 }
747
748 /* Check if blinking or very visible flag changed or style changed. */
749 if (s == NULL)
750 cstyle = tty->cstyle;
751 else {
752 cstyle = s->cstyle;
753 if (cstyle == SCREEN_CURSOR_DEFAULT) {
754 if (~cmode & MODE_CURSOR_BLINKING_SET) {
755 if (s->default_mode & MODE_CURSOR_BLINKING)
756 cmode |= MODE_CURSOR_BLINKING;
757 else
758 cmode &= ~MODE_CURSOR_BLINKING;
759 }
760 cstyle = s->default_cstyle;
761 }
762 }
763
764 /* If nothing changed, do nothing. */
765 changed = cmode ^ tty->mode;
766 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
767 return (cmode);
768
769 /*
770 * Set cursor style. If an explicit style has been set with DECSCUSR,
771 * set it if supported, otherwise send cvvis for blinking styles.
772 *
773 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
774 * if either the blinking or very visible flags are set.
775 */
776 tty_putcode(tty, TTYC_CNORM);
777 switch (cstyle) {
778 case SCREEN_CURSOR_DEFAULT:
779 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
780 if (tty_term_has(tty->term, TTYC_SE))
781 tty_putcode(tty, TTYC_SE);
782 else
783 tty_putcode_i(tty, TTYC_SS, 0);
784 }
785 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
786 tty_putcode(tty, TTYC_CVVIS);
787 break;
788 case SCREEN_CURSOR_BLOCK:
789 if (tty_term_has(tty->term, TTYC_SS)) {
790 if (cmode & MODE_CURSOR_BLINKING)
791 tty_putcode_i(tty, TTYC_SS, 1);
792 else
793 tty_putcode_i(tty, TTYC_SS, 2);
794 } else if (cmode & MODE_CURSOR_BLINKING)
795 tty_putcode(tty, TTYC_CVVIS);
796 break;
797 case SCREEN_CURSOR_UNDERLINE:
798 if (tty_term_has(tty->term, TTYC_SS)) {
799 if (cmode & MODE_CURSOR_BLINKING)
800 tty_putcode_i(tty, TTYC_SS, 3);
801 else
802 tty_putcode_i(tty, TTYC_SS, 4);
803 } else if (cmode & MODE_CURSOR_BLINKING)
804 tty_putcode(tty, TTYC_CVVIS);
805 break;
806 case SCREEN_CURSOR_BAR:
807 if (tty_term_has(tty->term, TTYC_SS)) {
808 if (cmode & MODE_CURSOR_BLINKING)
809 tty_putcode_i(tty, TTYC_SS, 5);
810 else
811 tty_putcode_i(tty, TTYC_SS, 6);
812 } else if (cmode & MODE_CURSOR_BLINKING)
813 tty_putcode(tty, TTYC_CVVIS);
814 break;
815 }
816 tty->cstyle = cstyle;
817 return (cmode);
818 }
819
820 void
821 tty_update_mode(struct tty *tty, int mode, struct screen *s)
822 {
823 struct tty_term *term = tty->term;
824 struct client *c = tty->client;
825 int changed;
826
827 if (tty->flags & TTY_NOCURSOR)
828 mode &= ~MODE_CURSOR;
829
830 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
831 mode |= MODE_CURSOR_BLINKING;
832 else
833 mode &= ~MODE_CURSOR_BLINKING;
834
835 changed = mode ^ tty->mode;
836 if (log_get_level() != 0 && changed != 0) {
837 log_debug("%s: current mode %s", c->name,
838 screen_mode_to_string(tty->mode));
839 log_debug("%s: setting mode %s", c->name,
840 screen_mode_to_string(mode));
841 }
842
843 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
844 /*
845 * If the mouse modes have changed, clear then all and apply
846 * again. There are differences in how terminals track the
847 * various bits.
848 */
849 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
850 if (mode & ALL_MOUSE_MODES)
851 tty_puts(tty, "\033[?1006h");
852 if (mode & MODE_MOUSE_ALL)
853 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
854 else if (mode & MODE_MOUSE_BUTTON)
855 tty_puts(tty, "\033[?1000h\033[?1002h");
856 else if (mode & MODE_MOUSE_STANDARD)
857 tty_puts(tty, "\033[?1000h");
858 }
859 tty->mode = mode;
860 }
861
862 static void
863 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
864 enum tty_code_code code1, u_int n)
865 {
866 if (tty_term_has(tty->term, code))
867 tty_putcode_i(tty, code, n);
868 else {
869 while (n-- > 0)
870 tty_putcode(tty, code1);
871 }
872 }
873
874 static void
875 tty_repeat_space(struct tty *tty, u_int n)
876 {
877 static char s[500];
878
879 if (*s != ' ')
880 memset(s, ' ', sizeof s);
881
882 while (n > sizeof s) {
883 tty_putn(tty, s, sizeof s, sizeof s);
884 n -= sizeof s;
885 }
886 if (n != 0)
887 tty_putn(tty, s, n, n);
888 }
889
890 /* Is this window bigger than the terminal? */
891 int
892 tty_window_bigger(struct tty *tty)
893 {
894 struct client *c = tty->client;
895 struct window *w = c->session->curw->window;
896
897 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
898 }
899
900 /* What offset should this window be drawn at? */
901 int
902 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
903 {
904 *ox = tty->oox;
905 *oy = tty->ooy;
906 *sx = tty->osx;
907 *sy = tty->osy;
908
909 return (tty->oflag);
910 }
911
912 /* What offset should this window be drawn at? */
913 static int
914 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
915 {
916 struct client *c = tty->client;
917 struct window *w = c->session->curw->window;
918 struct window_pane *wp = server_client_get_pane(c);
919 u_int cx, cy, lines;
920
921 lines = status_line_size(c);
922
923 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
924 *ox = 0;
925 *oy = 0;
926 *sx = w->sx;
927 *sy = w->sy;
928
929 c->pan_window = NULL;
930 return (0);
931 }
932
933 *sx = tty->sx;
934 *sy = tty->sy - lines;
935
936 if (c->pan_window == w) {
937 if (*sx >= w->sx)
938 c->pan_ox = 0;
939 else if (c->pan_ox + *sx > w->sx)
940 c->pan_ox = w->sx - *sx;
941 *ox = c->pan_ox;
942 if (*sy >= w->sy)
943 c->pan_oy = 0;
944 else if (c->pan_oy + *sy > w->sy)
945 c->pan_oy = w->sy - *sy;
946 *oy = c->pan_oy;
947 return (1);
948 }
949
950 if (~wp->screen->mode & MODE_CURSOR) {
951 *ox = 0;
952 *oy = 0;
953 } else {
954 cx = wp->xoff + wp->screen->cx;
955 cy = wp->yoff + wp->screen->cy;
956
957 if (cx < *sx)
958 *ox = 0;
959 else if (cx > w->sx - *sx)
960 *ox = w->sx - *sx;
961 else
962 *ox = cx - *sx / 2;
963
964 if (cy < *sy)
965 *oy = 0;
966 else if (cy > w->sy - *sy)
967 *oy = w->sy - *sy;
968 else
969 *oy = cy - *sy / 2;
970 }
971
972 c->pan_window = NULL;
973 return (1);
974 }
975
976 /* Update stored offsets for a window and redraw if necessary. */
977 void
978 tty_update_window_offset(struct window *w)
979 {
980 struct client *c;
981
982 TAILQ_FOREACH(c, &clients, entry) {
983 if (c->session != NULL &&
984 c->session->curw != NULL &&
985 c->session->curw->window == w)
986 tty_update_client_offset(c);
987 }
988 }
989
990 /* Update stored offsets for a client and redraw if necessary. */
991 void
992 tty_update_client_offset(struct client *c)
993 {
994 u_int ox, oy, sx, sy;
995
996 if (~c->flags & CLIENT_TERMINAL)
997 return;
998
999 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
1000 if (ox == c->tty.oox &&
1001 oy == c->tty.ooy &&
1002 sx == c->tty.osx &&
1003 sy == c->tty.osy)
1004 return;
1005
1006 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
1007 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
1008 ox, oy, sx, sy);
1009
1010 c->tty.oox = ox;
1011 c->tty.ooy = oy;
1012 c->tty.osx = sx;
1013 c->tty.osy = sy;
1014
1015 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
1016 }
1017
1018 /*
1019 * Is the region large enough to be worth redrawing once later rather than
1020 * probably several times now? Currently yes if it is more than 50% of the
1021 * pane.
1022 */
1023 static int
1024 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1025 {
1026 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
1027 }
1028
1029 /*
1030 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1031 * emulated.
1032 */
1033 static int
1034 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1035 {
1036 if (tty_term_flag(tty->term, TTYC_BCE))
1037 return (0);
1038 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1039 return (1);
1040 return (0);
1041 }
1042
1043 /*
1044 * Redraw scroll region using data from screen (already updated). Used when
1045 * CSR not supported, or window is a pane that doesn't take up the full
1046 * width of the terminal.
1047 */
1048 static void
1049 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1050 {
1051 struct client *c = tty->client;
1052 u_int i;
1053
1054 /*
1055 * If region is large, schedule a redraw. In most cases this is likely
1056 * to be followed by some more scrolling.
1057 */
1058 if (tty_large_region(tty, ctx)) {
1059 log_debug("%s: %s large redraw", __func__, c->name);
1060 ctx->redraw_cb(ctx);
1061 return;
1062 }
1063
1064 for (i = ctx->orupper; i <= ctx->orlower; i++)
1065 tty_draw_pane(tty, ctx, i);
1066 }
1067
1068 /* Is this position visible in the pane? */
1069 static int
1070 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1071 u_int py, u_int nx, u_int ny)
1072 {
1073 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1074
1075 if (!ctx->bigger)
1076 return (1);
1077
1078 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1079 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1080 return (0);
1081 return (1);
1082 }
1083
1084 /* Clamp line position to visible part of pane. */
1085 static int
1086 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1087 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1088 {
1089 u_int xoff = ctx->rxoff + px;
1090
1091 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1092 return (0);
1093 *ry = ctx->yoff + py - ctx->woy;
1094
1095 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1096 /* All visible. */
1097 *i = 0;
1098 *x = ctx->xoff + px - ctx->wox;
1099 *rx = nx;
1100 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1101 /* Both left and right not visible. */
1102 *i = ctx->wox;
1103 *x = 0;
1104 *rx = ctx->wsx;
1105 } else if (xoff < ctx->wox) {
1106 /* Left not visible. */
1107 *i = ctx->wox - (ctx->xoff + px);
1108 *x = 0;
1109 *rx = nx - *i;
1110 } else {
1111 /* Right not visible. */
1112 *i = 0;
1113 *x = (ctx->xoff + px) - ctx->wox;
1114 *rx = ctx->wsx - *x;
1115 }
1116 if (*rx > nx)
1117 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1118
1119 return (1);
1120 }
1121
1122 /* Clear a line. */
1123 static void
1124 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1125 u_int px, u_int nx, u_int bg)
1126 {
1127 struct client *c = tty->client;
1128 struct overlay_ranges r;
1129 u_int i;
1130
1131 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1132
1133 /* Nothing to clear. */
1134 if (nx == 0)
1135 return;
1136
1137 /* If genuine BCE is available, can try escape sequences. */
1138 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1139 /* Off the end of the line, use EL if available. */
1140 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1141 tty_cursor(tty, px, py);
1142 tty_putcode(tty, TTYC_EL);
1143 return;
1144 }
1145
1146 /* At the start of the line. Use EL1. */
1147 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1148 tty_cursor(tty, px + nx - 1, py);
1149 tty_putcode(tty, TTYC_EL1);
1150 return;
1151 }
1152
1153 /* Section of line. Use ECH if possible. */
1154 if (tty_term_has(tty->term, TTYC_ECH)) {
1155 tty_cursor(tty, px, py);
1156 tty_putcode_i(tty, TTYC_ECH, nx);
1157 return;
1158 }
1159 }
1160
1161 /*
1162 * Couldn't use an escape sequence, use spaces. Clear only the visible
1163 * bit if there is an overlay.
1164 */
1165 tty_check_overlay_range(tty, px, py, nx, &r);
1166 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1167 if (r.nx[i] == 0)
1168 continue;
1169 tty_cursor(tty, r.px[i], py);
1170 tty_repeat_space(tty, r.nx[i]);
1171 }
1172 }
1173
1174 /* Clear a line, adjusting to visible part of pane. */
1175 static void
1176 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1177 u_int px, u_int nx, u_int bg)
1178 {
1179 struct client *c = tty->client;
1180 u_int i, x, rx, ry;
1181
1182 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1183
1184 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1185 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1186 }
1187
1188 /* Clamp area position to visible part of pane. */
1189 static int
1190 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1191 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1192 u_int *ry)
1193 {
1194 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1195
1196 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1197 return (0);
1198
1199 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1200 /* All visible. */
1201 *i = 0;
1202 *x = ctx->xoff + px - ctx->wox;
1203 *rx = nx;
1204 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1205 /* Both left and right not visible. */
1206 *i = ctx->wox;
1207 *x = 0;
1208 *rx = ctx->wsx;
1209 } else if (xoff < ctx->wox) {
1210 /* Left not visible. */
1211 *i = ctx->wox - (ctx->xoff + px);
1212 *x = 0;
1213 *rx = nx - *i;
1214 } else {
1215 /* Right not visible. */
1216 *i = 0;
1217 *x = (ctx->xoff + px) - ctx->wox;
1218 *rx = ctx->wsx - *x;
1219 }
1220 if (*rx > nx)
1221 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1222
1223 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1224 /* All visible. */
1225 *j = 0;
1226 *y = ctx->yoff + py - ctx->woy;
1227 *ry = ny;
1228 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1229 /* Both top and bottom not visible. */
1230 *j = ctx->woy;
1231 *y = 0;
1232 *ry = ctx->wsy;
1233 } else if (yoff < ctx->woy) {
1234 /* Top not visible. */
1235 *j = ctx->woy - (ctx->yoff + py);
1236 *y = 0;
1237 *ry = ny - *j;
1238 } else {
1239 /* Bottom not visible. */
1240 *j = 0;
1241 *y = (ctx->yoff + py) - ctx->woy;
1242 *ry = ctx->wsy - *y;
1243 }
1244 if (*ry > ny)
1245 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1246
1247 return (1);
1248 }
1249
1250 /* Clear an area, adjusting to visible part of pane. */
1251 static void
1252 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1253 u_int ny, u_int px, u_int nx, u_int bg)
1254 {
1255 struct client *c = tty->client;
1256 u_int yy;
1257 char tmp[64];
1258
1259 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1260
1261 /* Nothing to clear. */
1262 if (nx == 0 || ny == 0)
1263 return;
1264
1265 /* If genuine BCE is available, can try escape sequences. */
1266 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1267 /* Use ED if clearing off the bottom of the terminal. */
1268 if (px == 0 &&
1269 px + nx >= tty->sx &&
1270 py + ny >= tty->sy &&
1271 tty_term_has(tty->term, TTYC_ED)) {
1272 tty_cursor(tty, 0, py);
1273 tty_putcode(tty, TTYC_ED);
1274 return;
1275 }
1276
1277 /*
1278 * On VT420 compatible terminals we can use DECFRA if the
1279 * background colour isn't default (because it doesn't work
1280 * after SGR 0).
1281 */
1282 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1283 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1284 py + 1, px + 1, py + ny, px + nx);
1285 tty_puts(tty, tmp);
1286 return;
1287 }
1288
1289 /* Full lines can be scrolled away to clear them. */
1290 if (px == 0 &&
1291 px + nx >= tty->sx &&
1292 ny > 2 &&
1293 tty_term_has(tty->term, TTYC_CSR) &&
1294 tty_term_has(tty->term, TTYC_INDN)) {
1295 tty_region(tty, py, py + ny - 1);
1296 tty_margin_off(tty);
1297 tty_putcode_i(tty, TTYC_INDN, ny);
1298 return;
1299 }
1300
1301 /*
1302 * If margins are supported, can just scroll the area off to
1303 * clear it.
1304 */
1305 if (nx > 2 &&
1306 ny > 2 &&
1307 tty_term_has(tty->term, TTYC_CSR) &&
1308 tty_use_margin(tty) &&
1309 tty_term_has(tty->term, TTYC_INDN)) {
1310 tty_region(tty, py, py + ny - 1);
1311 tty_margin(tty, px, px + nx - 1);
1312 tty_putcode_i(tty, TTYC_INDN, ny);
1313 return;
1314 }
1315 }
1316
1317 /* Couldn't use an escape sequence, loop over the lines. */
1318 for (yy = py; yy < py + ny; yy++)
1319 tty_clear_line(tty, defaults, yy, px, nx, bg);
1320 }
1321
1322 /* Clear an area in a pane. */
1323 static void
1324 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1325 u_int ny, u_int px, u_int nx, u_int bg)
1326 {
1327 u_int i, j, x, y, rx, ry;
1328
1329 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1330 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1331 }
1332
1333 static void
1334 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1335 {
1336 struct screen *s = ctx->s;
1337 u_int nx = ctx->sx, i, x, rx, ry;
1338
1339 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1340
1341 if (!ctx->bigger) {
1342 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1343 &ctx->defaults, ctx->palette);
1344 return;
1345 }
1346 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1347 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1348 ctx->palette);
1349 }
1350 }
1351
1352 static const struct grid_cell *
1353 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1354 {
1355 static struct grid_cell new;
1356 int c;
1357
1358 /* Characters less than 0x7f are always fine, no matter what. */
1359 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1360 return (gc);
1361
1362 /* UTF-8 terminal and a UTF-8 character - fine. */
1363 if (tty->client->flags & CLIENT_UTF8)
1364 return (gc);
1365 memcpy(&new, gc, sizeof new);
1366
1367 /* See if this can be mapped to an ACS character. */
1368 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1369 if (c != -1) {
1370 utf8_set(&new.data, c);
1371 new.attr |= GRID_ATTR_CHARSET;
1372 return (&new);
1373 }
1374
1375 /* Replace by the right number of underscores. */
1376 new.data.size = gc->data.width;
1377 if (new.data.size > UTF8_SIZE)
1378 new.data.size = UTF8_SIZE;
1379 memset(new.data.data, '_', new.data.size);
1380 return (&new);
1381 }
1382
1383 /*
1384 * Check if a single character is obstructed by the overlay and return a
1385 * boolean.
1386 */
1387 static int
1388 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1389 {
1390 struct overlay_ranges r;
1391
1392 /*
1393 * A unit width range will always return nx[2] == 0 from a check, even
1394 * with multiple overlays, so it's sufficient to check just the first
1395 * two entries.
1396 */
1397 tty_check_overlay_range(tty, px, py, 1, &r);
1398 if (r.nx[0] + r.nx[1] == 0)
1399 return (0);
1400 return (1);
1401 }
1402
1403 /* Return parts of the input range which are visible. */
1404 static void
1405 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1406 struct overlay_ranges *r)
1407 {
1408 struct client *c = tty->client;
1409
1410 if (c->overlay_check == NULL) {
1411 r->px[0] = px;
1412 r->nx[0] = nx;
1413 r->px[1] = 0;
1414 r->nx[1] = 0;
1415 r->px[2] = 0;
1416 r->nx[2] = 0;
1417 return;
1418 }
1419
1420 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1421 }
1422
1423 void
1424 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1425 u_int atx, u_int aty, const struct grid_cell *defaults,
1426 struct colour_palette *palette)
1427 {
1428 struct grid *gd = s->grid;
1429 struct grid_cell gc, last;
1430 const struct grid_cell *gcp;
1431 struct grid_line *gl;
1432 struct client *c = tty->client;
1433 struct overlay_ranges r;
1434 u_int i, j, ux, sx, width, hidden, eux, nxx;
1435 u_int cellsize;
1436 int flags, cleared = 0, wrapped = 0;
1437 char buf[512];
1438 size_t len;
1439
1440 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1441 px, py, nx, atx, aty);
1442 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1443 defaults->bg);
1444
1445 /*
1446 * py is the line in the screen to draw.
1447 * px is the start x and nx is the width to draw.
1448 * atx,aty is the line on the terminal to draw it.
1449 */
1450
1451 flags = (tty->flags & TTY_NOCURSOR);
1452 tty->flags |= TTY_NOCURSOR;
1453 tty_update_mode(tty, tty->mode, s);
1454
1455 tty_region_off(tty);
1456 tty_margin_off(tty);
1457
1458 /*
1459 * Clamp the width to cellsize - note this is not cellused, because
1460 * there may be empty background cells after it (from BCE).
1461 */
1462 sx = screen_size_x(s);
1463 if (nx > sx)
1464 nx = sx;
1465 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1466 if (sx > cellsize)
1467 sx = cellsize;
1468 if (sx > tty->sx)
1469 sx = tty->sx;
1470 if (sx > nx)
1471 sx = nx;
1472 ux = 0;
1473
1474 if (py == 0)
1475 gl = NULL;
1476 else
1477 gl = grid_get_line(gd, gd->hsize + py - 1);
1478 if (gl == NULL ||
1479 (~gl->flags & GRID_LINE_WRAPPED) ||
1480 atx != 0 ||
1481 tty->cx < tty->sx ||
1482 nx < tty->sx) {
1483 if (nx < tty->sx &&
1484 atx == 0 &&
1485 px + sx != nx &&
1486 tty_term_has(tty->term, TTYC_EL1) &&
1487 !tty_fake_bce(tty, defaults, 8) &&
1488 c->overlay_check == NULL) {
1489 tty_default_attributes(tty, defaults, palette, 8,
1490 s->hyperlinks);
1491 tty_cursor(tty, nx - 1, aty);
1492 tty_putcode(tty, TTYC_EL1);
1493 cleared = 1;
1494 }
1495 } else {
1496 log_debug("%s: wrapped line %u", __func__, aty);
1497 wrapped = 1;
1498 }
1499
1500 memcpy(&last, &grid_default_cell, sizeof last);
1501 len = 0;
1502 width = 0;
1503
1504 for (i = 0; i < sx; i++) {
1505 grid_view_get_cell(gd, px + i, py, &gc);
1506 gcp = tty_check_codeset(tty, &gc);
1507 if (len != 0 &&
1508 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1509 (gcp->attr & GRID_ATTR_CHARSET) ||
1510 gcp->flags != last.flags ||
1511 gcp->attr != last.attr ||
1512 gcp->fg != last.fg ||
1513 gcp->bg != last.bg ||
1514 gcp->us != last.us ||
1515 gcp->link != last.link ||
1516 ux + width + gcp->data.width > nx ||
1517 (sizeof buf) - len < gcp->data.size)) {
1518 tty_attributes(tty, &last, defaults, palette,
1519 s->hyperlinks);
1520 if (last.flags & GRID_FLAG_CLEARED) {
1521 log_debug("%s: %zu cleared", __func__, len);
1522 tty_clear_line(tty, defaults, aty, atx + ux,
1523 width, last.bg);
1524 } else {
1525 if (!wrapped || atx != 0 || ux != 0)
1526 tty_cursor(tty, atx + ux, aty);
1527 tty_putn(tty, buf, len, width);
1528 }
1529 ux += width;
1530
1531 len = 0;
1532 width = 0;
1533 wrapped = 0;
1534 }
1535
1536 if (gcp->flags & GRID_FLAG_SELECTED)
1537 screen_select_cell(s, &last, gcp);
1538 else
1539 memcpy(&last, gcp, sizeof last);
1540
1541 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1542 &r);
1543 hidden = 0;
1544 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1545 hidden += r.nx[j];
1546 hidden = gcp->data.width - hidden;
1547 if (hidden != 0 && hidden == gcp->data.width) {
1548 if (~gcp->flags & GRID_FLAG_PADDING)
1549 ux += gcp->data.width;
1550 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1551 if (~gcp->flags & GRID_FLAG_PADDING) {
1552 tty_attributes(tty, &last, defaults, palette,
1553 s->hyperlinks);
1554 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1555 if (r.nx[j] == 0)
1556 continue;
1557 /* Effective width drawn so far. */
1558 eux = r.px[j] - atx;
1559 if (eux < nx) {
1560 tty_cursor(tty, r.px[j], aty);
1561 nxx = nx - eux;
1562 if (r.nx[j] > nxx)
1563 r.nx[j] = nxx;
1564 tty_repeat_space(tty, r.nx[j]);
1565 ux = eux + r.nx[j];
1566 }
1567 }
1568 }
1569 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1570 tty_attributes(tty, &last, defaults, palette,
1571 s->hyperlinks);
1572 tty_cursor(tty, atx + ux, aty);
1573 for (j = 0; j < gcp->data.size; j++)
1574 tty_putc(tty, gcp->data.data[j]);
1575 ux += gcp->data.width;
1576 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1577 memcpy(buf + len, gcp->data.data, gcp->data.size);
1578 len += gcp->data.size;
1579 width += gcp->data.width;
1580 }
1581 }
1582 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1583 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1584 if (last.flags & GRID_FLAG_CLEARED) {
1585 log_debug("%s: %zu cleared (end)", __func__, len);
1586 tty_clear_line(tty, defaults, aty, atx + ux, width,
1587 last.bg);
1588 } else {
1589 if (!wrapped || atx != 0 || ux != 0)
1590 tty_cursor(tty, atx + ux, aty);
1591 tty_putn(tty, buf, len, width);
1592 }
1593 ux += width;
1594 }
1595
1596 if (!cleared && ux < nx) {
1597 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1598 nx - ux, len);
1599 tty_default_attributes(tty, defaults, palette, 8,
1600 s->hyperlinks);
1601 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1602 }
1603
1604 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1605 tty_update_mode(tty, tty->mode, s);
1606 }
1607
1608 #ifdef ENABLE_SIXEL
1609 /* Update context for client. */
1610 static int
1611 tty_set_client_cb(struct tty_ctx *ttyctx, struct client *c)
1612 {
1613 struct window_pane *wp = ttyctx->arg;
1614
1615 if (c->session->curw->window != wp->window)
1616 return (0);
1617 if (wp->layout_cell == NULL)
1618 return (0);
1619
1620 /* Set the properties relevant to the current client. */
1621 ttyctx->bigger = tty_window_offset(&c->tty, &ttyctx->wox, &ttyctx->woy,
1622 &ttyctx->wsx, &ttyctx->wsy);
1623
1624 ttyctx->yoff = ttyctx->ryoff = wp->yoff;
1625 if (status_at_line(c) == 0)
1626 ttyctx->yoff += status_line_size(c);
1627
1628 return (1);
1629 }
1630
1631 void
1632 tty_draw_images(struct client *c, struct window_pane *wp, struct screen *s)
1633 {
1634 struct image *im;
1635 struct tty_ctx ttyctx;
1636
1637 TAILQ_FOREACH(im, &s->images, entry) {
1638 memset(&ttyctx, 0, sizeof ttyctx);
1639
1640 /* Set the client independent properties. */
1641 ttyctx.ocx = im->px;
1642 ttyctx.ocy = im->py;
1643
1644 ttyctx.orlower = s->rlower;
1645 ttyctx.orupper = s->rupper;
1646
1647 ttyctx.xoff = ttyctx.rxoff = wp->xoff;
1648 ttyctx.sx = wp->sx;
1649 ttyctx.sy = wp->sy;
1650
1651 ttyctx.ptr = im;
1652 ttyctx.arg = wp;
1653 ttyctx.set_client_cb = tty_set_client_cb;
1654 ttyctx.allow_invisible_panes = 1;
1655 tty_write_one(tty_cmd_sixelimage, c, &ttyctx);
1656 }
1657 }
1658 #endif
1659
1660 void
1661 tty_sync_start(struct tty *tty)
1662 {
1663 if (tty->flags & TTY_BLOCK)
1664 return;
1665 if (tty->flags & TTY_SYNCING)
1666 return;
1667 tty->flags |= TTY_SYNCING;
1668
1669 if (tty_term_has(tty->term, TTYC_SYNC)) {
1670 log_debug("%s sync start", tty->client->name);
1671 tty_putcode_i(tty, TTYC_SYNC, 1);
1672 }
1673 }
1674
1675 void
1676 tty_sync_end(struct tty *tty)
1677 {
1678 if (tty->flags & TTY_BLOCK)
1679 return;
1680 if (~tty->flags & TTY_SYNCING)
1681 return;
1682 tty->flags &= ~TTY_SYNCING;
1683
1684 if (tty_term_has(tty->term, TTYC_SYNC)) {
1685 log_debug("%s sync end", tty->client->name);
1686 tty_putcode_i(tty, TTYC_SYNC, 2);
1687 }
1688 }
1689
1690 static int
1691 tty_client_ready(const struct tty_ctx *ctx, struct client *c)
1692 {
1693 if (c->session == NULL || c->tty.term == NULL)
1694 return (0);
1695 if (c->flags & CLIENT_SUSPENDED)
1696 return (0);
1697
1698 /*
1699 * If invisible panes are allowed (used for passthrough), don't care if
1700 * redrawing or frozen.
1701 */
1702 if (ctx->allow_invisible_panes)
1703 return (1);
1704
1705 if (c->flags & CLIENT_REDRAWWINDOW)
1706 return (0);
1707 if (c->tty.flags & TTY_FREEZE)
1708 return (0);
1709 return (1);
1710 }
1711
1712 void
1713 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1714 struct tty_ctx *ctx)
1715 {
1716 struct client *c;
1717 int state;
1718
1719 if (ctx->set_client_cb == NULL)
1720 return;
1721 TAILQ_FOREACH(c, &clients, entry) {
1722 if (tty_client_ready(ctx, c)) {
1723 state = ctx->set_client_cb(ctx, c);
1724 if (state == -1)
1725 break;
1726 if (state == 0)
1727 continue;
1728 cmdfn(&c->tty, ctx);
1729 }
1730 }
1731 }
1732
1733 #ifdef ENABLE_SIXEL
1734 /* Only write to the incoming tty instead of every client. */
1735 static void
1736 tty_write_one(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1737 struct client *c, struct tty_ctx *ctx)
1738 {
1739 if (ctx->set_client_cb == NULL)
1740 return;
1741 if ((ctx->set_client_cb(ctx, c)) == 1)
1742 cmdfn(&c->tty, ctx);
1743 }
1744 #endif
1745
1746 void
1747 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1748 {
1749 struct client *c = tty->client;
1750
1751 if (ctx->bigger ||
1752 !tty_full_width(tty, ctx) ||
1753 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1754 (!tty_term_has(tty->term, TTYC_ICH) &&
1755 !tty_term_has(tty->term, TTYC_ICH1)) ||
1756 c->overlay_check != NULL) {
1757 tty_draw_pane(tty, ctx, ctx->ocy);
1758 return;
1759 }
1760
1761 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1762 ctx->s->hyperlinks);
1763
1764 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1765
1766 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1767 }
1768
1769 void
1770 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1771 {
1772 struct client *c = tty->client;
1773
1774 if (ctx->bigger ||
1775 !tty_full_width(tty, ctx) ||
1776 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1777 (!tty_term_has(tty->term, TTYC_DCH) &&
1778 !tty_term_has(tty->term, TTYC_DCH1)) ||
1779 c->overlay_check != NULL) {
1780 tty_draw_pane(tty, ctx, ctx->ocy);
1781 return;
1782 }
1783
1784 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1785 ctx->s->hyperlinks);
1786
1787 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1788
1789 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1790 }
1791
1792 void
1793 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1794 {
1795 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1796 ctx->s->hyperlinks);
1797
1798 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1799 }
1800
1801 void
1802 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1803 {
1804 struct client *c = tty->client;
1805
1806 if (ctx->bigger ||
1807 !tty_full_width(tty, ctx) ||
1808 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1809 !tty_term_has(tty->term, TTYC_CSR) ||
1810 !tty_term_has(tty->term, TTYC_IL1) ||
1811 ctx->sx == 1 ||
1812 ctx->sy == 1 ||
1813 c->overlay_check != NULL) {
1814 tty_redraw_region(tty, ctx);
1815 return;
1816 }
1817
1818 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1819 ctx->s->hyperlinks);
1820
1821 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1822 tty_margin_off(tty);
1823 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1824
1825 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1826 tty->cx = tty->cy = UINT_MAX;
1827 }
1828
1829 void
1830 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1831 {
1832 struct client *c = tty->client;
1833
1834 if (ctx->bigger ||
1835 !tty_full_width(tty, ctx) ||
1836 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1837 !tty_term_has(tty->term, TTYC_CSR) ||
1838 !tty_term_has(tty->term, TTYC_DL1) ||
1839 ctx->sx == 1 ||
1840 ctx->sy == 1 ||
1841 c->overlay_check != NULL) {
1842 tty_redraw_region(tty, ctx);
1843 return;
1844 }
1845
1846 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1847 ctx->s->hyperlinks);
1848
1849 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1850 tty_margin_off(tty);
1851 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1852
1853 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1854 tty->cx = tty->cy = UINT_MAX;
1855 }
1856
1857 void
1858 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1859 {
1860 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1861 ctx->s->hyperlinks);
1862
1863 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1864 }
1865
1866 void
1867 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1868 {
1869 u_int nx = ctx->sx - ctx->ocx;
1870
1871 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1872 ctx->s->hyperlinks);
1873
1874 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1875 }
1876
1877 void
1878 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1879 {
1880 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1881 ctx->s->hyperlinks);
1882
1883 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1884 }
1885
1886 void
1887 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1888 {
1889 struct client *c = tty->client;
1890
1891 if (ctx->ocy != ctx->orupper)
1892 return;
1893
1894 if (ctx->bigger ||
1895 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1896 tty_fake_bce(tty, &ctx->defaults, 8) ||
1897 !tty_term_has(tty->term, TTYC_CSR) ||
1898 (!tty_term_has(tty->term, TTYC_RI) &&
1899 !tty_term_has(tty->term, TTYC_RIN)) ||
1900 ctx->sx == 1 ||
1901 ctx->sy == 1 ||
1902 c->overlay_check != NULL) {
1903 tty_redraw_region(tty, ctx);
1904 return;
1905 }
1906
1907 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1908 ctx->s->hyperlinks);
1909
1910 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1911 tty_margin_pane(tty, ctx);
1912 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1913
1914 if (tty_term_has(tty->term, TTYC_RI))
1915 tty_putcode(tty, TTYC_RI);
1916 else
1917 tty_putcode_i(tty, TTYC_RIN, 1);
1918 }
1919
1920 void
1921 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1922 {
1923 struct client *c = tty->client;
1924
1925 if (ctx->ocy != ctx->orlower)
1926 return;
1927
1928 if (ctx->bigger ||
1929 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1930 tty_fake_bce(tty, &ctx->defaults, 8) ||
1931 !tty_term_has(tty->term, TTYC_CSR) ||
1932 ctx->sx == 1 ||
1933 ctx->sy == 1 ||
1934 c->overlay_check != NULL) {
1935 tty_redraw_region(tty, ctx);
1936 return;
1937 }
1938
1939 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1940 ctx->s->hyperlinks);
1941
1942 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1943 tty_margin_pane(tty, ctx);
1944
1945 /*
1946 * If we want to wrap a pane while using margins, the cursor needs to
1947 * be exactly on the right of the region. If the cursor is entirely off
1948 * the edge - move it back to the right. Some terminals are funny about
1949 * this and insert extra spaces, so only use the right if margins are
1950 * enabled.
1951 */
1952 if (ctx->xoff + ctx->ocx > tty->rright) {
1953 if (!tty_use_margin(tty))
1954 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1955 else
1956 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1957 } else
1958 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1959
1960 tty_putc(tty, '\n');
1961 }
1962
1963 void
1964 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1965 {
1966 struct client *c = tty->client;
1967 u_int i;
1968
1969 if (ctx->bigger ||
1970 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1971 tty_fake_bce(tty, &ctx->defaults, 8) ||
1972 !tty_term_has(tty->term, TTYC_CSR) ||
1973 ctx->sx == 1 ||
1974 ctx->sy == 1 ||
1975 c->overlay_check != NULL) {
1976 tty_redraw_region(tty, ctx);
1977 return;
1978 }
1979
1980 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1981 ctx->s->hyperlinks);
1982
1983 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1984 tty_margin_pane(tty, ctx);
1985
1986 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1987 if (!tty_use_margin(tty))
1988 tty_cursor(tty, 0, tty->rlower);
1989 else
1990 tty_cursor(tty, tty->rright, tty->rlower);
1991 for (i = 0; i < ctx->num; i++)
1992 tty_putc(tty, '\n');
1993 } else {
1994 if (tty->cy == UINT_MAX)
1995 tty_cursor(tty, 0, 0);
1996 else
1997 tty_cursor(tty, 0, tty->cy);
1998 tty_putcode_i(tty, TTYC_INDN, ctx->num);
1999 }
2000 }
2001
2002 void
2003 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
2004 {
2005 u_int i;
2006 struct client *c = tty->client;
2007
2008 if (ctx->bigger ||
2009 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
2010 tty_fake_bce(tty, &ctx->defaults, 8) ||
2011 !tty_term_has(tty->term, TTYC_CSR) ||
2012 (!tty_term_has(tty->term, TTYC_RI) &&
2013 !tty_term_has(tty->term, TTYC_RIN)) ||
2014 ctx->sx == 1 ||
2015 ctx->sy == 1 ||
2016 c->overlay_check != NULL) {
2017 tty_redraw_region(tty, ctx);
2018 return;
2019 }
2020
2021 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2022 ctx->s->hyperlinks);
2023
2024 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2025 tty_margin_pane(tty, ctx);
2026 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
2027
2028 if (tty_term_has(tty->term, TTYC_RIN))
2029 tty_putcode_i(tty, TTYC_RIN, ctx->num);
2030 else {
2031 for (i = 0; i < ctx->num; i++)
2032 tty_putcode(tty, TTYC_RI);
2033 }
2034 }
2035
2036 void
2037 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
2038 {
2039 u_int px, py, nx, ny;
2040
2041 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2042 ctx->s->hyperlinks);
2043
2044 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2045 tty_margin_off(tty);
2046
2047 px = 0;
2048 nx = ctx->sx;
2049 py = ctx->ocy + 1;
2050 ny = ctx->sy - ctx->ocy - 1;
2051
2052 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2053
2054 px = ctx->ocx;
2055 nx = ctx->sx - ctx->ocx;
2056 py = ctx->ocy;
2057
2058 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
2059 }
2060
2061 void
2062 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
2063 {
2064 u_int px, py, nx, ny;
2065
2066 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2067 ctx->s->hyperlinks);
2068
2069 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2070 tty_margin_off(tty);
2071
2072 px = 0;
2073 nx = ctx->sx;
2074 py = 0;
2075 ny = ctx->ocy;
2076
2077 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2078
2079 px = 0;
2080 nx = ctx->ocx + 1;
2081 py = ctx->ocy;
2082
2083 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
2084 }
2085
2086 void
2087 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
2088 {
2089 u_int px, py, nx, ny;
2090
2091 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2092 ctx->s->hyperlinks);
2093
2094 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2095 tty_margin_off(tty);
2096
2097 px = 0;
2098 nx = ctx->sx;
2099 py = 0;
2100 ny = ctx->sy;
2101
2102 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2103 }
2104
2105 void
2106 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2107 {
2108 u_int i, j;
2109
2110 if (ctx->bigger) {
2111 ctx->redraw_cb(ctx);
2112 return;
2113 }
2114
2115 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2116 ctx->s->hyperlinks);
2117
2118 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2119 tty_margin_off(tty);
2120
2121 for (j = 0; j < ctx->sy; j++) {
2122 tty_cursor_pane(tty, ctx, 0, j);
2123 for (i = 0; i < ctx->sx; i++)
2124 tty_putc(tty, 'E');
2125 }
2126 }
2127
2128 void
2129 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2130 {
2131 const struct grid_cell *gcp = ctx->cell;
2132 struct screen *s = ctx->s;
2133 struct overlay_ranges r;
2134 u_int px, py, i, vis = 0;
2135
2136 px = ctx->xoff + ctx->ocx - ctx->wox;
2137 py = ctx->yoff + ctx->ocy - ctx->woy;
2138 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2139 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2140 return;
2141
2142 /* Handle partially obstructed wide characters. */
2143 if (gcp->data.width > 1) {
2144 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2145 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2146 vis += r.nx[i];
2147 if (vis < gcp->data.width) {
2148 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2149 px, py, &ctx->defaults, ctx->palette);
2150 return;
2151 }
2152 }
2153
2154 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2155 ctx->ocy == ctx->orlower &&
2156 tty_full_width(tty, ctx))
2157 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2158
2159 tty_margin_off(tty);
2160 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2161
2162 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2163 ctx->s->hyperlinks);
2164
2165 if (ctx->num == 1)
2166 tty_invalidate(tty);
2167 }
2168
2169 void
2170 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2171 {
2172 struct overlay_ranges r;
2173 u_int i, px, py, cx;
2174 char *cp = ctx->ptr;
2175
2176 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2177 return;
2178
2179 if (ctx->bigger &&
2180 (ctx->xoff + ctx->ocx < ctx->wox ||
2181 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2182 if (!ctx->wrapped ||
2183 !tty_full_width(tty, ctx) ||
2184 (tty->term->flags & TERM_NOAM) ||
2185 ctx->xoff + ctx->ocx != 0 ||
2186 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2187 tty->cx < tty->sx ||
2188 tty->cy == tty->rlower)
2189 tty_draw_pane(tty, ctx, ctx->ocy);
2190 else
2191 ctx->redraw_cb(ctx);
2192 return;
2193 }
2194
2195 tty_margin_off(tty);
2196 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2197 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2198
2199 /* Get tty position from pane position for overlay check. */
2200 px = ctx->xoff + ctx->ocx - ctx->wox;
2201 py = ctx->yoff + ctx->ocy - ctx->woy;
2202
2203 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2204 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2205 if (r.nx[i] == 0)
2206 continue;
2207 /* Convert back to pane position for printing. */
2208 cx = r.px[i] - ctx->xoff + ctx->wox;
2209 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2210 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2211 }
2212 }
2213
2214 void
2215 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2216 {
2217 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2218 }
2219
2220 void
2221 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2222 size_t len)
2223 {
2224 char *encoded;
2225 size_t size;
2226
2227 if (~tty->flags & TTY_STARTED)
2228 return;
2229 if (!tty_term_has(tty->term, TTYC_MS))
2230 return;
2231
2232 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2233 encoded = xmalloc(size);
2234
2235 b64_ntop(buf, len, encoded, size);
2236 tty->flags |= TTY_NOBLOCK;
2237 tty_putcode_ss(tty, TTYC_MS, flags, encoded);
2238
2239 free(encoded);
2240 }
2241
2242 void
2243 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2244 {
2245 tty->flags |= TTY_NOBLOCK;
2246 tty_add(tty, ctx->ptr, ctx->num);
2247 tty_invalidate(tty);
2248 }
2249
2250 #ifdef ENABLE_SIXEL
2251 void
2252 tty_cmd_sixelimage(struct tty *tty, const struct tty_ctx *ctx)
2253 {
2254 struct image *im = ctx->ptr;
2255 struct sixel_image *si = im->data;
2256 struct sixel_image *new;
2257 char *data;
2258 size_t size;
2259 u_int cx = ctx->ocx, cy = ctx->ocy, sx, sy;
2260 u_int i, j, x, y, rx, ry;
2261 int fallback = 0;
2262
2263 if ((~tty->term->flags & TERM_SIXEL) &&
2264 !tty_term_has(tty->term, TTYC_SXL))
2265 fallback = 1;
2266 if (tty->xpixel == 0 || tty->ypixel == 0)
2267 fallback = 1;
2268
2269 sixel_size_in_cells(si, &sx, &sy);
2270 log_debug("%s: image is %ux%u", __func__, sx, sy);
2271 if (!tty_clamp_area(tty, ctx, cx, cy, sx, sy, &i, &j, &x, &y, &rx, &ry))
2272 return;
2273 log_debug("%s: clamping to %u,%u-%u,%u", __func__, i, j, rx, ry);
2274
2275 if (fallback == 1) {
2276 data = xstrdup(im->fallback);
2277 size = strlen(data);
2278 } else {
2279 new = sixel_scale(si, tty->xpixel, tty->ypixel, i, j, rx, ry, 0);
2280 if (new == NULL)
2281 return;
2282
2283 data = sixel_print(new, si, &size);
2284 }
2285 if (data != NULL) {
2286 log_debug("%s: %zu bytes: %s", __func__, size, data);
2287 tty_region_off(tty);
2288 tty_margin_off(tty);
2289 tty_cursor(tty, x, y);
2290
2291 tty->flags |= TTY_NOBLOCK;
2292 tty_add(tty, data, size);
2293 tty_invalidate(tty);
2294 free(data);
2295 }
2296
2297 if (fallback == 0)
2298 sixel_free(new);
2299 }
2300 #endif
2301
2302 void
2303 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2304 {
2305 if (ctx->num == 0x11) {
2306 /*
2307 * This is an overlay and a command that moves the cursor so
2308 * start synchronized updates.
2309 */
2310 tty_sync_start(tty);
2311 } else if (~ctx->num & 0x10) {
2312 /*
2313 * This is a pane. If there is an overlay, always start;
2314 * otherwise, only if requested.
2315 */
2316 if (ctx->num || tty->client->overlay_draw != NULL)
2317 tty_sync_start(tty);
2318 }
2319 }
2320
2321 void
2322 tty_cell(struct tty *tty, const struct grid_cell *gc,
2323 const struct grid_cell *defaults, struct colour_palette *palette,
2324 struct hyperlinks *hl)
2325 {
2326 const struct grid_cell *gcp;
2327
2328 /* Skip last character if terminal is stupid. */
2329 if ((tty->term->flags & TERM_NOAM) &&
2330 tty->cy == tty->sy - 1 &&
2331 tty->cx == tty->sx - 1)
2332 return;
2333
2334 /* If this is a padding character, do nothing. */
2335 if (gc->flags & GRID_FLAG_PADDING)
2336 return;
2337
2338 /* Check the output codeset and apply attributes. */
2339 gcp = tty_check_codeset(tty, gc);
2340 tty_attributes(tty, gcp, defaults, palette, hl);
2341
2342 /* If it is a single character, write with putc to handle ACS. */
2343 if (gcp->data.size == 1) {
2344 tty_attributes(tty, gcp, defaults, palette, hl);
2345 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2346 return;
2347 tty_putc(tty, *gcp->data.data);
2348 return;
2349 }
2350
2351 /* Write the data. */
2352 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2353 }
2354
2355 void
2356 tty_reset(struct tty *tty)
2357 {
2358 struct grid_cell *gc = &tty->cell;
2359
2360 if (!grid_cells_equal(gc, &grid_default_cell)) {
2361 if (gc->link != 0)
2362 tty_putcode_ss(tty, TTYC_HLS, "", "");
2363 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2364 tty_putcode(tty, TTYC_RMACS);
2365 tty_putcode(tty, TTYC_SGR0);
2366 memcpy(gc, &grid_default_cell, sizeof *gc);
2367 }
2368 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2369 }
2370
2371 static void
2372 tty_invalidate(struct tty *tty)
2373 {
2374 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2375 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2376
2377 tty->cx = tty->cy = UINT_MAX;
2378 tty->rupper = tty->rleft = UINT_MAX;
2379 tty->rlower = tty->rright = UINT_MAX;
2380
2381 if (tty->flags & TTY_STARTED) {
2382 if (tty_use_margin(tty))
2383 tty_putcode(tty, TTYC_ENMG);
2384 tty_putcode(tty, TTYC_SGR0);
2385
2386 tty->mode = ALL_MODES;
2387 tty_update_mode(tty, MODE_CURSOR, NULL);
2388
2389 tty_cursor(tty, 0, 0);
2390 tty_region_off(tty);
2391 tty_margin_off(tty);
2392 } else
2393 tty->mode = MODE_CURSOR;
2394 }
2395
2396 /* Turn off margin. */
2397 void
2398 tty_region_off(struct tty *tty)
2399 {
2400 tty_region(tty, 0, tty->sy - 1);
2401 }
2402
2403 /* Set region inside pane. */
2404 static void
2405 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2406 u_int rlower)
2407 {
2408 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2409 ctx->yoff + rlower - ctx->woy);
2410 }
2411
2412 /* Set region at absolute position. */
2413 static void
2414 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2415 {
2416 if (tty->rlower == rlower && tty->rupper == rupper)
2417 return;
2418 if (!tty_term_has(tty->term, TTYC_CSR))
2419 return;
2420
2421 tty->rupper = rupper;
2422 tty->rlower = rlower;
2423
2424 /*
2425 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2426 * 0,0 if it is beyond the last column (they do not reset their wrap
2427 * flag so further output causes a line feed). As a workaround, do an
2428 * explicit move to 0 first.
2429 */
2430 if (tty->cx >= tty->sx) {
2431 if (tty->cy == UINT_MAX)
2432 tty_cursor(tty, 0, 0);
2433 else
2434 tty_cursor(tty, 0, tty->cy);
2435 }
2436
2437 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2438 tty->cx = tty->cy = UINT_MAX;
2439 }
2440
2441 /* Turn off margin. */
2442 void
2443 tty_margin_off(struct tty *tty)
2444 {
2445 tty_margin(tty, 0, tty->sx - 1);
2446 }
2447
2448 /* Set margin inside pane. */
2449 static void
2450 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2451 {
2452 tty_margin(tty, ctx->xoff - ctx->wox,
2453 ctx->xoff + ctx->sx - 1 - ctx->wox);
2454 }
2455
2456 /* Set margin at absolute position. */
2457 static void
2458 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2459 {
2460 if (!tty_use_margin(tty))
2461 return;
2462 if (tty->rleft == rleft && tty->rright == rright)
2463 return;
2464
2465 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2466
2467 tty->rleft = rleft;
2468 tty->rright = rright;
2469
2470 if (rleft == 0 && rright == tty->sx - 1)
2471 tty_putcode(tty, TTYC_CLMG);
2472 else
2473 tty_putcode_ii(tty, TTYC_CMG, rleft, rright);
2474 tty->cx = tty->cy = UINT_MAX;
2475 }
2476
2477 /*
2478 * Move the cursor, unless it would wrap itself when the next character is
2479 * printed.
2480 */
2481 static void
2482 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2483 u_int cx, u_int cy)
2484 {
2485 if (!ctx->wrapped ||
2486 !tty_full_width(tty, ctx) ||
2487 (tty->term->flags & TERM_NOAM) ||
2488 ctx->xoff + cx != 0 ||
2489 ctx->yoff + cy != tty->cy + 1 ||
2490 tty->cx < tty->sx ||
2491 tty->cy == tty->rlower)
2492 tty_cursor_pane(tty, ctx, cx, cy);
2493 else
2494 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2495 }
2496
2497 /* Move cursor inside pane. */
2498 static void
2499 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2500 {
2501 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2502 }
2503
2504 /* Move cursor to absolute position. */
2505 void
2506 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2507 {
2508 struct tty_term *term = tty->term;
2509 u_int thisx, thisy;
2510 int change;
2511
2512 if (tty->flags & TTY_BLOCK)
2513 return;
2514
2515 thisx = tty->cx;
2516 thisy = tty->cy;
2517
2518 /*
2519 * If in the automargin space, and want to be there, do not move.
2520 * Otherwise, force the cursor to be in range (and complain).
2521 */
2522 if (cx == thisx && cy == thisy && cx == tty->sx)
2523 return;
2524 if (cx > tty->sx - 1) {
2525 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2526 cx = tty->sx - 1;
2527 }
2528
2529 /* No change. */
2530 if (cx == thisx && cy == thisy)
2531 return;
2532
2533 /* Currently at the very end of the line - use absolute movement. */
2534 if (thisx > tty->sx - 1)
2535 goto absolute;
2536
2537 /* Move to home position (0, 0). */
2538 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2539 tty_putcode(tty, TTYC_HOME);
2540 goto out;
2541 }
2542
2543 /* Zero on the next line. */
2544 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2545 (!tty_use_margin(tty) || tty->rleft == 0)) {
2546 tty_putc(tty, '\r');
2547 tty_putc(tty, '\n');
2548 goto out;
2549 }
2550
2551 /* Moving column or row. */
2552 if (cy == thisy) {
2553 /*
2554 * Moving column only, row staying the same.
2555 */
2556
2557 /* To left edge. */
2558 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2559 tty_putc(tty, '\r');
2560 goto out;
2561 }
2562
2563 /* One to the left. */
2564 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2565 tty_putcode(tty, TTYC_CUB1);
2566 goto out;
2567 }
2568
2569 /* One to the right. */
2570 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2571 tty_putcode(tty, TTYC_CUF1);
2572 goto out;
2573 }
2574
2575 /* Calculate difference. */
2576 change = thisx - cx; /* +ve left, -ve right */
2577
2578 /*
2579 * Use HPA if change is larger than absolute, otherwise move
2580 * the cursor with CUB/CUF.
2581 */
2582 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2583 tty_putcode_i(tty, TTYC_HPA, cx);
2584 goto out;
2585 } else if (change > 0 &&
2586 tty_term_has(term, TTYC_CUB) &&
2587 !tty_use_margin(tty)) {
2588 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2589 tty_putcode(tty, TTYC_CUB1);
2590 tty_putcode(tty, TTYC_CUB1);
2591 goto out;
2592 }
2593 tty_putcode_i(tty, TTYC_CUB, change);
2594 goto out;
2595 } else if (change < 0 &&
2596 tty_term_has(term, TTYC_CUF) &&
2597 !tty_use_margin(tty)) {
2598 tty_putcode_i(tty, TTYC_CUF, -change);
2599 goto out;
2600 }
2601 } else if (cx == thisx) {
2602 /*
2603 * Moving row only, column staying the same.
2604 */
2605
2606 /* One above. */
2607 if (thisy != tty->rupper &&
2608 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2609 tty_putcode(tty, TTYC_CUU1);
2610 goto out;
2611 }
2612
2613 /* One below. */
2614 if (thisy != tty->rlower &&
2615 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2616 tty_putcode(tty, TTYC_CUD1);
2617 goto out;
2618 }
2619
2620 /* Calculate difference. */
2621 change = thisy - cy; /* +ve up, -ve down */
2622
2623 /*
2624 * Try to use VPA if change is larger than absolute or if this
2625 * change would cross the scroll region, otherwise use CUU/CUD.
2626 */
2627 if ((u_int) abs(change) > cy ||
2628 (change < 0 && cy - change > tty->rlower) ||
2629 (change > 0 && cy - change < tty->rupper)) {
2630 if (tty_term_has(term, TTYC_VPA)) {
2631 tty_putcode_i(tty, TTYC_VPA, cy);
2632 goto out;
2633 }
2634 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2635 tty_putcode_i(tty, TTYC_CUU, change);
2636 goto out;
2637 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2638 tty_putcode_i(tty, TTYC_CUD, -change);
2639 goto out;
2640 }
2641 }
2642
2643 absolute:
2644 /* Absolute movement. */
2645 tty_putcode_ii(tty, TTYC_CUP, cy, cx);
2646
2647 out:
2648 tty->cx = cx;
2649 tty->cy = cy;
2650 }
2651
2652 static void
2653 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2654 struct hyperlinks *hl)
2655 {
2656 const char *uri, *id;
2657
2658 if (gc->link == tty->cell.link)
2659 return;
2660 tty->cell.link = gc->link;
2661
2662 if (hl == NULL)
2663 return;
2664
2665 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2666 tty_putcode_ss(tty, TTYC_HLS, "", "");
2667 else
2668 tty_putcode_ss(tty, TTYC_HLS, id, uri);
2669 }
2670
2671 void
2672 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2673 const struct grid_cell *defaults, struct colour_palette *palette,
2674 struct hyperlinks *hl)
2675 {
2676 struct grid_cell *tc = &tty->cell, gc2;
2677 int changed;
2678
2679 /* Copy cell and update default colours. */
2680 memcpy(&gc2, gc, sizeof gc2);
2681 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2682 if (gc2.fg == 8)
2683 gc2.fg = defaults->fg;
2684 if (gc2.bg == 8)
2685 gc2.bg = defaults->bg;
2686 }
2687
2688 /* Ignore cell if it is the same as the last one. */
2689 if (gc2.attr == tty->last_cell.attr &&
2690 gc2.fg == tty->last_cell.fg &&
2691 gc2.bg == tty->last_cell.bg &&
2692 gc2.us == tty->last_cell.us &&
2693 gc2.link == tty->last_cell.link)
2694 return;
2695
2696 /*
2697 * If no setab, try to use the reverse attribute as a best-effort for a
2698 * non-default background. This is a bit of a hack but it doesn't do
2699 * any serious harm and makes a couple of applications happier.
2700 */
2701 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2702 if (gc2.attr & GRID_ATTR_REVERSE) {
2703 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2704 gc2.attr &= ~GRID_ATTR_REVERSE;
2705 } else {
2706 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2707 gc2.attr |= GRID_ATTR_REVERSE;
2708 }
2709 }
2710
2711 /* Fix up the colours if necessary. */
2712 tty_check_fg(tty, palette, &gc2);
2713 tty_check_bg(tty, palette, &gc2);
2714 tty_check_us(tty, palette, &gc2);
2715
2716 /*
2717 * If any bits are being cleared or the underline colour is now default,
2718 * reset everything.
2719 */
2720 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2721 tty_reset(tty);
2722
2723 /*
2724 * Set the colours. This may call tty_reset() (so it comes next) and
2725 * may add to (NOT remove) the desired attributes.
2726 */
2727 tty_colours(tty, &gc2);
2728
2729 /* Filter out attribute bits already set. */
2730 changed = gc2.attr & ~tc->attr;
2731 tc->attr = gc2.attr;
2732
2733 /* Set the attributes. */
2734 if (changed & GRID_ATTR_BRIGHT)
2735 tty_putcode(tty, TTYC_BOLD);
2736 if (changed & GRID_ATTR_DIM)
2737 tty_putcode(tty, TTYC_DIM);
2738 if (changed & GRID_ATTR_ITALICS)
2739 tty_set_italics(tty);
2740 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2741 if ((changed & GRID_ATTR_UNDERSCORE) ||
2742 !tty_term_has(tty->term, TTYC_SMULX))
2743 tty_putcode(tty, TTYC_SMUL);
2744 else if (changed & GRID_ATTR_UNDERSCORE_2)
2745 tty_putcode_i(tty, TTYC_SMULX, 2);
2746 else if (changed & GRID_ATTR_UNDERSCORE_3)
2747 tty_putcode_i(tty, TTYC_SMULX, 3);
2748 else if (changed & GRID_ATTR_UNDERSCORE_4)
2749 tty_putcode_i(tty, TTYC_SMULX, 4);
2750 else if (changed & GRID_ATTR_UNDERSCORE_5)
2751 tty_putcode_i(tty, TTYC_SMULX, 5);
2752 }
2753 if (changed & GRID_ATTR_BLINK)
2754 tty_putcode(tty, TTYC_BLINK);
2755 if (changed & GRID_ATTR_REVERSE) {
2756 if (tty_term_has(tty->term, TTYC_REV))
2757 tty_putcode(tty, TTYC_REV);
2758 else if (tty_term_has(tty->term, TTYC_SMSO))
2759 tty_putcode(tty, TTYC_SMSO);
2760 }
2761 if (changed & GRID_ATTR_HIDDEN)
2762 tty_putcode(tty, TTYC_INVIS);
2763 if (changed & GRID_ATTR_STRIKETHROUGH)
2764 tty_putcode(tty, TTYC_SMXX);
2765 if (changed & GRID_ATTR_OVERLINE)
2766 tty_putcode(tty, TTYC_SMOL);
2767 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2768 tty_putcode(tty, TTYC_SMACS);
2769
2770 /* Set hyperlink if any. */
2771 tty_hyperlink(tty, gc, hl);
2772
2773 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2774 }
2775
2776 static void
2777 tty_colours(struct tty *tty, const struct grid_cell *gc)
2778 {
2779 struct grid_cell *tc = &tty->cell;
2780 int have_ax;
2781
2782 /* No changes? Nothing is necessary. */
2783 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2784 return;
2785
2786 /*
2787 * Is either the default colour? This is handled specially because the
2788 * best solution might be to reset both colours to default, in which
2789 * case if only one is default need to fall onward to set the other
2790 * colour.
2791 */
2792 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2793 /*
2794 * If don't have AX but do have op, send sgr0 (op can't
2795 * actually be used because it is sometimes the same as sgr0
2796 * and sometimes isn't). This resets both colours to default.
2797 *
2798 * Otherwise, try to set the default colour only as needed.
2799 */
2800 have_ax = tty_term_flag(tty->term, TTYC_AX);
2801 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2802 tty_reset(tty);
2803 else {
2804 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2805 if (have_ax)
2806 tty_puts(tty, "\033[39m");
2807 else if (tc->fg != 7)
2808 tty_putcode_i(tty, TTYC_SETAF, 7);
2809 tc->fg = gc->fg;
2810 }
2811 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2812 if (have_ax)
2813 tty_puts(tty, "\033[49m");
2814 else if (tc->bg != 0)
2815 tty_putcode_i(tty, TTYC_SETAB, 0);
2816 tc->bg = gc->bg;
2817 }
2818 }
2819 }
2820
2821 /* Set the foreground colour. */
2822 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2823 tty_colours_fg(tty, gc);
2824
2825 /*
2826 * Set the background colour. This must come after the foreground as
2827 * tty_colour_fg() can call tty_reset().
2828 */
2829 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2830 tty_colours_bg(tty, gc);
2831
2832 /* Set the underscore colour. */
2833 if (gc->us != tc->us)
2834 tty_colours_us(tty, gc);
2835 }
2836
2837 static void
2838 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2839 struct grid_cell *gc)
2840 {
2841 u_char r, g, b;
2842 u_int colours;
2843 int c;
2844
2845 /*
2846 * Perform substitution if this pane has a palette. If the bright
2847 * attribute is set and Nobr is not present, use the bright entry in
2848 * the palette by changing to the aixterm colour
2849 */
2850 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2851 c = gc->fg;
2852 if (c < 8 &&
2853 gc->attr & GRID_ATTR_BRIGHT &&
2854 !tty_term_has(tty->term, TTYC_NOBR))
2855 c += 90;
2856 if ((c = colour_palette_get(palette, c)) != -1)
2857 gc->fg = c;
2858 }
2859
2860 /* Is this a 24-bit colour? */
2861 if (gc->fg & COLOUR_FLAG_RGB) {
2862 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2863 if (tty->term->flags & TERM_RGBCOLOURS)
2864 return;
2865 colour_split_rgb(gc->fg, &r, &g, &b);
2866 gc->fg = colour_find_rgb(r, g, b);
2867 }
2868
2869 /* How many colours does this terminal have? */
2870 if (tty->term->flags & TERM_256COLOURS)
2871 colours = 256;
2872 else
2873 colours = tty_term_number(tty->term, TTYC_COLORS);
2874
2875 /* Is this a 256-colour colour? */
2876 if (gc->fg & COLOUR_FLAG_256) {
2877 /* And not a 256 colour mode? */
2878 if (colours < 256) {
2879 gc->fg = colour_256to16(gc->fg);
2880 if (gc->fg & 8) {
2881 gc->fg &= 7;
2882 if (colours >= 16)
2883 gc->fg += 90;
2884 }
2885 }
2886 return;
2887 }
2888
2889 /* Is this an aixterm colour? */
2890 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2891 gc->fg -= 90;
2892 gc->attr |= GRID_ATTR_BRIGHT;
2893 }
2894 }
2895
2896 static void
2897 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2898 struct grid_cell *gc)
2899 {
2900 u_char r, g, b;
2901 u_int colours;
2902 int c;
2903
2904 /* Perform substitution if this pane has a palette. */
2905 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2906 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2907 gc->bg = c;
2908 }
2909
2910 /* Is this a 24-bit colour? */
2911 if (gc->bg & COLOUR_FLAG_RGB) {
2912 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2913 if (tty->term->flags & TERM_RGBCOLOURS)
2914 return;
2915 colour_split_rgb(gc->bg, &r, &g, &b);
2916 gc->bg = colour_find_rgb(r, g, b);
2917 }
2918
2919 /* How many colours does this terminal have? */
2920 if (tty->term->flags & TERM_256COLOURS)
2921 colours = 256;
2922 else
2923 colours = tty_term_number(tty->term, TTYC_COLORS);
2924
2925 /* Is this a 256-colour colour? */
2926 if (gc->bg & COLOUR_FLAG_256) {
2927 /*
2928 * And not a 256 colour mode? Translate to 16-colour
2929 * palette. Bold background doesn't exist portably, so just
2930 * discard the bold bit if set.
2931 */
2932 if (colours < 256) {
2933 gc->bg = colour_256to16(gc->bg);
2934 if (gc->bg & 8) {
2935 gc->bg &= 7;
2936 if (colours >= 16)
2937 gc->bg += 90;
2938 }
2939 }
2940 return;
2941 }
2942
2943 /* Is this an aixterm colour? */
2944 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2945 gc->bg -= 90;
2946 }
2947
2948 static void
2949 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2950 struct grid_cell *gc)
2951 {
2952 int c;
2953
2954 /* Perform substitution if this pane has a palette. */
2955 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2956 if ((c = colour_palette_get(palette, gc->us)) != -1)
2957 gc->us = c;
2958 }
2959
2960 /* Convert underscore colour if only RGB can be supported. */
2961 if (!tty_term_has(tty->term, TTYC_SETULC1)) {
2962 if ((c = colour_force_rgb (gc->us)) == -1)
2963 gc->us = 8;
2964 else
2965 gc->us = c;
2966 }
2967 }
2968
2969 static void
2970 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2971 {
2972 struct grid_cell *tc = &tty->cell;
2973 char s[32];
2974
2975 /* Is this a 24-bit or 256-colour colour? */
2976 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2977 if (tty_try_colour(tty, gc->fg, "38") == 0)
2978 goto save;
2979 /* Should not get here, already converted in tty_check_fg. */
2980 return;
2981 }
2982
2983 /* Is this an aixterm bright colour? */
2984 if (gc->fg >= 90 && gc->fg <= 97) {
2985 if (tty->term->flags & TERM_256COLOURS) {
2986 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2987 tty_puts(tty, s);
2988 } else
2989 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8);
2990 goto save;
2991 }
2992
2993 /* Otherwise set the foreground colour. */
2994 tty_putcode_i(tty, TTYC_SETAF, gc->fg);
2995
2996 save:
2997 /* Save the new values in the terminal current cell. */
2998 tc->fg = gc->fg;
2999 }
3000
3001 static void
3002 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
3003 {
3004 struct grid_cell *tc = &tty->cell;
3005 char s[32];
3006
3007 /* Is this a 24-bit or 256-colour colour? */
3008 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
3009 if (tty_try_colour(tty, gc->bg, "48") == 0)
3010 goto save;
3011 /* Should not get here, already converted in tty_check_bg. */
3012 return;
3013 }
3014
3015 /* Is this an aixterm bright colour? */
3016 if (gc->bg >= 90 && gc->bg <= 97) {
3017 if (tty->term->flags & TERM_256COLOURS) {
3018 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
3019 tty_puts(tty, s);
3020 } else
3021 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8);
3022 goto save;
3023 }
3024
3025 /* Otherwise set the background colour. */
3026 tty_putcode_i(tty, TTYC_SETAB, gc->bg);
3027
3028 save:
3029 /* Save the new values in the terminal current cell. */
3030 tc->bg = gc->bg;
3031 }
3032
3033 static void
3034 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
3035 {
3036 struct grid_cell *tc = &tty->cell;
3037 u_int c;
3038 u_char r, g, b;
3039
3040 /* Clear underline colour. */
3041 if (COLOUR_DEFAULT(gc->us)) {
3042 tty_putcode(tty, TTYC_OL);
3043 goto save;
3044 }
3045
3046 /*
3047 * If this is not an RGB colour, use Setulc1 if it exists, otherwise
3048 * convert.
3049 */
3050 if (~gc->us & COLOUR_FLAG_RGB) {
3051 c = gc->us;
3052 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97))
3053 c -= 82;
3054 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256);
3055 return;
3056 }
3057
3058 /*
3059 * Setulc and setal follows the ncurses(3) one argument "direct colour"
3060 * capability format. Calculate the colour value.
3061 */
3062 colour_split_rgb(gc->us, &r, &g, &b);
3063 c = (65536 * r) + (256 * g) + b;
3064
3065 /*
3066 * Write the colour. Only use setal if the RGB flag is set because the
3067 * non-RGB version may be wrong.
3068 */
3069 if (tty_term_has(tty->term, TTYC_SETULC))
3070 tty_putcode_i(tty, TTYC_SETULC, c);
3071 else if (tty_term_has(tty->term, TTYC_SETAL) &&
3072 tty_term_has(tty->term, TTYC_RGB))
3073 tty_putcode_i(tty, TTYC_SETAL, c);
3074
3075 save:
3076 /* Save the new values in the terminal current cell. */
3077 tc->us = gc->us;
3078 }
3079
3080 static int
3081 tty_try_colour(struct tty *tty, int colour, const char *type)
3082 {
3083 u_char r, g, b;
3084
3085 if (colour & COLOUR_FLAG_256) {
3086 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
3087 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff);
3088 else if (tty_term_has(tty->term, TTYC_SETAB))
3089 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff);
3090 return (0);
3091 }
3092
3093 if (colour & COLOUR_FLAG_RGB) {
3094 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
3095 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
3096 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b);
3097 else if (tty_term_has(tty->term, TTYC_SETRGBB))
3098 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b);
3099 return (0);
3100 }
3101
3102 return (-1);
3103 }
3104
3105 static void
3106 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
3107 {
3108 memcpy(gc, &grid_default_cell, sizeof *gc);
3109 gc->fg = wp->palette.fg;
3110 gc->bg = wp->palette.bg;
3111 }
3112
3113 void
3114 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
3115 {
3116 struct options *oo = wp->options;
3117 struct format_tree *ft;
3118
3119 memcpy(gc, &grid_default_cell, sizeof *gc);
3120
3121 if (wp->flags & PANE_STYLECHANGED) {
3122 log_debug("%%%u: style changed", wp->id);
3123 wp->flags &= ~PANE_STYLECHANGED;
3124
3125 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
3126 FORMAT_NOJOBS);
3127 format_defaults(ft, NULL, NULL, NULL, wp);
3128 tty_window_default_style(&wp->cached_active_gc, wp);
3129 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
3130 tty_window_default_style(&wp->cached_gc, wp);
3131 style_add(&wp->cached_gc, oo, "window-style", ft);
3132 format_free(ft);
3133 }
3134
3135 if (gc->fg == 8) {
3136 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
3137 gc->fg = wp->cached_active_gc.fg;
3138 else
3139 gc->fg = wp->cached_gc.fg;
3140 }
3141
3142 if (gc->bg == 8) {
3143 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
3144 gc->bg = wp->cached_active_gc.bg;
3145 else
3146 gc->bg = wp->cached_gc.bg;
3147 }
3148 }
3149
3150 static void
3151 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
3152 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
3153 {
3154 struct grid_cell gc;
3155
3156 memcpy(&gc, &grid_default_cell, sizeof gc);
3157 gc.bg = bg;
3158 tty_attributes(tty, &gc, defaults, palette, hl);
3159 }
3160
3161 static void
3162 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
3163 {
3164 struct tty *tty = data;
3165 struct client *c = tty->client;
3166
3167 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3168 free(c->clipboard_panes);
3169 c->clipboard_panes = NULL;
3170 c->clipboard_npanes = 0;
3171
3172 tty->flags &= ~TTY_OSC52QUERY;
3173 }
3174
3175 void
3176 tty_clipboard_query(struct tty *tty)
3177 {
3178 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3179
3180 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3181 return;
3182 tty_putcode_ss(tty, TTYC_MS, "", "?");
3183
3184 tty->flags |= TTY_OSC52QUERY;
3185 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3186 evtimer_add(&tty->clipboard_timer, &tv);
3187 }
tmux -- terminal multiplexer similar to GNU Screen