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On second thoughts, do check DA2 for DECFRA and DECSLRM since that will
[tmux.git] / tty.c
blob8c576306500ddfc0240eae23fa542597313ff729
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 #define tty_use_margin(tty) \
76 (tty->term->flags & TERM_DECSLRM)
77 #define tty_full_width(tty, ctx) \
78 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
79
80 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
81 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
82 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
83
84 #define TTY_QUERY_TIMEOUT 5
85 #define TTY_REQUEST_LIMIT 30
86
87 void
88 tty_create_log(void)
89 {
90 char name[64];
91
92 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
93
94 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
95 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
96 fatal("fcntl failed");
97 }
98
99 int
100 tty_init(struct tty *tty, struct client *c)
101 {
102 if (!isatty(c->fd))
103 return (-1);
104
105 memset(tty, 0, sizeof *tty);
106 tty->client = c;
107
108 tty->cstyle = SCREEN_CURSOR_DEFAULT;
109 tty->ccolour = -1;
110 tty->fg = tty->bg = -1;
111
112 if (tcgetattr(c->fd, &tty->tio) != 0)
113 return (-1);
114 return (0);
115 }
116
117 void
118 tty_resize(struct tty *tty)
119 {
120 struct client *c = tty->client;
121 struct winsize ws;
122 u_int sx, sy, xpixel, ypixel;
123
124 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
125 sx = ws.ws_col;
126 if (sx == 0) {
127 sx = 80;
128 xpixel = 0;
129 } else
130 xpixel = ws.ws_xpixel / sx;
131 sy = ws.ws_row;
132 if (sy == 0) {
133 sy = 24;
134 ypixel = 0;
135 } else
136 ypixel = ws.ws_ypixel / sy;
137 } else {
138 sx = 80;
139 sy = 24;
140 xpixel = 0;
141 ypixel = 0;
142 }
143 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
144 xpixel, ypixel);
145 tty_set_size(tty, sx, sy, xpixel, ypixel);
146 tty_invalidate(tty);
147 }
148
149 void
150 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
151 {
152 tty->sx = sx;
153 tty->sy = sy;
154 tty->xpixel = xpixel;
155 tty->ypixel = ypixel;
156 }
157
158 static void
159 tty_read_callback(__unused int fd, __unused short events, void *data)
160 {
161 struct tty *tty = data;
162 struct client *c = tty->client;
163 const char *name = c->name;
164 size_t size = EVBUFFER_LENGTH(tty->in);
165 int nread;
166
167 nread = evbuffer_read(tty->in, c->fd, -1);
168 if (nread == 0 || nread == -1) {
169 if (nread == 0)
170 log_debug("%s: read closed", name);
171 else
172 log_debug("%s: read error: %s", name, strerror(errno));
173 event_del(&tty->event_in);
174 server_client_lost(tty->client);
175 return;
176 }
177 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
178
179 while (tty_keys_next(tty))
180 ;
181 }
182
183 static void
184 tty_timer_callback(__unused int fd, __unused short events, void *data)
185 {
186 struct tty *tty = data;
187 struct client *c = tty->client;
188 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
189
190 log_debug("%s: %zu discarded", c->name, tty->discarded);
191
192 c->flags |= CLIENT_ALLREDRAWFLAGS;
193 c->discarded += tty->discarded;
194
195 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
196 tty->flags &= ~TTY_BLOCK;
197 tty_invalidate(tty);
198 return;
199 }
200 tty->discarded = 0;
201 evtimer_add(&tty->timer, &tv);
202 }
203
204 static int
205 tty_block_maybe(struct tty *tty)
206 {
207 struct client *c = tty->client;
208 size_t size = EVBUFFER_LENGTH(tty->out);
209 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
210
211 if (size == 0)
212 tty->flags &= ~TTY_NOBLOCK;
213 else if (tty->flags & TTY_NOBLOCK)
214 return (0);
215
216 if (size < TTY_BLOCK_START(tty))
217 return (0);
218
219 if (tty->flags & TTY_BLOCK)
220 return (1);
221 tty->flags |= TTY_BLOCK;
222
223 log_debug("%s: can't keep up, %zu discarded", c->name, size);
224
225 evbuffer_drain(tty->out, size);
226 c->discarded += size;
227
228 tty->discarded = 0;
229 evtimer_add(&tty->timer, &tv);
230 return (1);
231 }
232
233 static void
234 tty_write_callback(__unused int fd, __unused short events, void *data)
235 {
236 struct tty *tty = data;
237 struct client *c = tty->client;
238 size_t size = EVBUFFER_LENGTH(tty->out);
239 int nwrite;
240
241 nwrite = evbuffer_write(tty->out, c->fd);
242 if (nwrite == -1)
243 return;
244 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
245
246 if (c->redraw > 0) {
247 if ((size_t)nwrite >= c->redraw)
248 c->redraw = 0;
249 else
250 c->redraw -= nwrite;
251 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
252 c->redraw);
253 } else if (tty_block_maybe(tty))
254 return;
255
256 if (EVBUFFER_LENGTH(tty->out) != 0)
257 event_add(&tty->event_out, NULL);
258 }
259
260 int
261 tty_open(struct tty *tty, char **cause)
262 {
263 struct client *c = tty->client;
264
265 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
266 c->term_ncaps, &c->term_features, cause);
267 if (tty->term == NULL) {
268 tty_close(tty);
269 return (-1);
270 }
271 tty->flags |= TTY_OPENED;
272
273 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
274
275 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
276 tty_read_callback, tty);
277 tty->in = evbuffer_new();
278 if (tty->in == NULL)
279 fatal("out of memory");
280
281 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
282 tty->out = evbuffer_new();
283 if (tty->out == NULL)
284 fatal("out of memory");
285
286 evtimer_set(&tty->timer, tty_timer_callback, tty);
287
288 tty_start_tty(tty);
289 tty_keys_build(tty);
290
291 return (0);
292 }
293
294 static void
295 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
296 {
297 struct tty *tty = data;
298 struct client *c = tty->client;
299
300 log_debug("%s: start timer fired", c->name);
301 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
302 tty_update_features(tty);
303 tty->flags |= TTY_ALL_REQUEST_FLAGS;
304 }
305
306 void
307 tty_start_tty(struct tty *tty)
308 {
309 struct client *c = tty->client;
310 struct termios tio;
311 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
312
313 setblocking(c->fd, 0);
314 event_add(&tty->event_in, NULL);
315
316 memcpy(&tio, &tty->tio, sizeof tio);
317 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
318 tio.c_iflag |= IGNBRK;
319 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
320 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
321 ECHOKE|ISIG);
322 tio.c_cc[VMIN] = 1;
323 tio.c_cc[VTIME] = 0;
324 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
325 tcflush(c->fd, TCOFLUSH);
326
327 tty_putcode(tty, TTYC_SMCUP);
328
329 tty_putcode(tty, TTYC_SMKX);
330 tty_putcode(tty, TTYC_CLEAR);
331
332 if (tty_acs_needed(tty)) {
333 log_debug("%s: using capabilities for ACS", c->name);
334 tty_putcode(tty, TTYC_ENACS);
335 } else
336 log_debug("%s: using UTF-8 for ACS", c->name);
337
338 tty_putcode(tty, TTYC_CNORM);
339 if (tty_term_has(tty->term, TTYC_KMOUS)) {
340 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
341 tty_puts(tty, "\033[?1006l\033[?1005l");
342 }
343 if (tty_term_has(tty->term, TTYC_ENBP))
344 tty_putcode(tty, TTYC_ENBP);
345
346 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
347 evtimer_add(&tty->start_timer, &tv);
348
349 tty->flags |= TTY_STARTED;
350 tty_invalidate(tty);
351
352 if (tty->ccolour != -1)
353 tty_force_cursor_colour(tty, -1);
354
355 tty->mouse_drag_flag = 0;
356 tty->mouse_drag_update = NULL;
357 tty->mouse_drag_release = NULL;
358 }
359
360 void
361 tty_send_requests(struct tty *tty)
362 {
363 if (~tty->flags & TTY_STARTED)
364 return;
365
366 if (tty->term->flags & TERM_VT100LIKE) {
367 if (~tty->term->flags & TTY_HAVEDA)
368 tty_puts(tty, "\033[c");
369 if (~tty->flags & TTY_HAVEDA2)
370 tty_puts(tty, "\033[>c");
371 if (~tty->flags & TTY_HAVEXDA)
372 tty_puts(tty, "\033[>q");
373 tty_puts(tty, "\033]10;?\033\\");
374 tty_puts(tty, "\033]11;?\033\\");
375 } else
376 tty->flags |= TTY_ALL_REQUEST_FLAGS;
377 tty->last_requests = time (NULL);
378 }
379
380 void
381 tty_repeat_requests(struct tty *tty)
382 {
383 time_t t = time (NULL);
384
385 if (~tty->flags & TTY_STARTED)
386 return;
387
388 if (t - tty->last_requests <= TTY_REQUEST_LIMIT)
389 return;
390 tty->last_requests = t;
391
392 if (tty->term->flags & TERM_VT100LIKE) {
393 tty_puts(tty, "\033]10;?\033\\");
394 tty_puts(tty, "\033]11;?\033\\");
395 }
396 }
397
398 void
399 tty_stop_tty(struct tty *tty)
400 {
401 struct client *c = tty->client;
402 struct winsize ws;
403
404 if (!(tty->flags & TTY_STARTED))
405 return;
406 tty->flags &= ~TTY_STARTED;
407
408 evtimer_del(&tty->start_timer);
409
410 event_del(&tty->timer);
411 tty->flags &= ~TTY_BLOCK;
412
413 event_del(&tty->event_in);
414 event_del(&tty->event_out);
415
416 /*
417 * Be flexible about error handling and try not kill the server just
418 * because the fd is invalid. Things like ssh -t can easily leave us
419 * with a dead tty.
420 */
421 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
422 return;
423 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
424 return;
425
426 tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
427 if (tty_acs_needed(tty))
428 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
429 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
430 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
431 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
432 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
433 if (tty_term_has(tty->term, TTYC_SE))
434 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
435 else if (tty_term_has(tty->term, TTYC_SS))
436 tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0));
437 }
438 if (tty->ccolour != -1)
439 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
440
441 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
442 if (tty_term_has(tty->term, TTYC_KMOUS)) {
443 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
444 tty_raw(tty, "\033[?1006l\033[?1005l");
445 }
446 if (tty_term_has(tty->term, TTYC_DSBP))
447 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
448
449 if (tty->term->flags & TERM_VT100LIKE)
450 tty_raw(tty, "\033[?7727l");
451 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
452 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
453
454 if (tty_use_margin(tty))
455 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
456 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
457
458 setblocking(c->fd, 1);
459 }
460
461 void
462 tty_close(struct tty *tty)
463 {
464 if (event_initialized(&tty->key_timer))
465 evtimer_del(&tty->key_timer);
466 tty_stop_tty(tty);
467
468 if (tty->flags & TTY_OPENED) {
469 evbuffer_free(tty->in);
470 event_del(&tty->event_in);
471 evbuffer_free(tty->out);
472 event_del(&tty->event_out);
473
474 tty_term_free(tty->term);
475 tty_keys_free(tty);
476
477 tty->flags &= ~TTY_OPENED;
478 }
479 }
480
481 void
482 tty_free(struct tty *tty)
483 {
484 tty_close(tty);
485 }
486
487 void
488 tty_update_features(struct tty *tty)
489 {
490 struct client *c = tty->client;
491
492 if (tty_apply_features(tty->term, c->term_features))
493 tty_term_apply_overrides(tty->term);
494
495 if (tty_use_margin(tty))
496 tty_putcode(tty, TTYC_ENMG);
497 if (options_get_number(global_options, "extended-keys"))
498 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
499 if (options_get_number(global_options, "focus-events"))
500 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
501 if (tty->term->flags & TERM_VT100LIKE)
502 tty_puts(tty, "\033[?7727h");
503
504 /*
505 * Features might have changed since the first draw during attach. For
506 * example, this happens when DA responses are received.
507 */
508 server_redraw_client(c);
509
510 tty_invalidate(tty);
511 }
512
513 void
514 tty_raw(struct tty *tty, const char *s)
515 {
516 struct client *c = tty->client;
517 ssize_t n, slen;
518 u_int i;
519
520 slen = strlen(s);
521 for (i = 0; i < 5; i++) {
522 n = write(c->fd, s, slen);
523 if (n >= 0) {
524 s += n;
525 slen -= n;
526 if (slen == 0)
527 break;
528 } else if (n == -1 && errno != EAGAIN)
529 break;
530 usleep(100);
531 }
532 }
533
534 void
535 tty_putcode(struct tty *tty, enum tty_code_code code)
536 {
537 tty_puts(tty, tty_term_string(tty->term, code));
538 }
539
540 void
541 tty_putcode_i(struct tty *tty, enum tty_code_code code, int a)
542 {
543 if (a < 0)
544 return;
545 tty_puts(tty, tty_term_string_i(tty->term, code, a));
546 }
547
548 void
549 tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b)
550 {
551 if (a < 0 || b < 0)
552 return;
553 tty_puts(tty, tty_term_string_ii(tty->term, code, a, b));
554 }
555
556 void
557 tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c)
558 {
559 if (a < 0 || b < 0 || c < 0)
560 return;
561 tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c));
562 }
563
564 void
565 tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a)
566 {
567 if (a != NULL)
568 tty_puts(tty, tty_term_string_s(tty->term, code, a));
569 }
570
571 void
572 tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a,
573 const char *b)
574 {
575 if (a != NULL && b != NULL)
576 tty_puts(tty, tty_term_string_ss(tty->term, code, a, b));
577 }
578
579 static void
580 tty_add(struct tty *tty, const char *buf, size_t len)
581 {
582 struct client *c = tty->client;
583
584 if (tty->flags & TTY_BLOCK) {
585 tty->discarded += len;
586 return;
587 }
588
589 evbuffer_add(tty->out, buf, len);
590 log_debug("%s: %.*s", c->name, (int)len, buf);
591 c->written += len;
592
593 if (tty_log_fd != -1)
594 write(tty_log_fd, buf, len);
595 if (tty->flags & TTY_STARTED)
596 event_add(&tty->event_out, NULL);
597 }
598
599 void
600 tty_puts(struct tty *tty, const char *s)
601 {
602 if (*s != '\0')
603 tty_add(tty, s, strlen(s));
604 }
605
606 void
607 tty_putc(struct tty *tty, u_char ch)
608 {
609 const char *acs;
610
611 if ((tty->term->flags & TERM_NOAM) &&
612 ch >= 0x20 && ch != 0x7f &&
613 tty->cy == tty->sy - 1 &&
614 tty->cx + 1 >= tty->sx)
615 return;
616
617 if (tty->cell.attr & GRID_ATTR_CHARSET) {
618 acs = tty_acs_get(tty, ch);
619 if (acs != NULL)
620 tty_add(tty, acs, strlen(acs));
621 else
622 tty_add(tty, &ch, 1);
623 } else
624 tty_add(tty, &ch, 1);
625
626 if (ch >= 0x20 && ch != 0x7f) {
627 if (tty->cx >= tty->sx) {
628 tty->cx = 1;
629 if (tty->cy != tty->rlower)
630 tty->cy++;
631
632 /*
633 * On !am terminals, force the cursor position to where
634 * we think it should be after a line wrap - this means
635 * it works on sensible terminals as well.
636 */
637 if (tty->term->flags & TERM_NOAM)
638 tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx);
639 } else
640 tty->cx++;
641 }
642 }
643
644 void
645 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
646 {
647 if ((tty->term->flags & TERM_NOAM) &&
648 tty->cy == tty->sy - 1 &&
649 tty->cx + len >= tty->sx)
650 len = tty->sx - tty->cx - 1;
651
652 tty_add(tty, buf, len);
653 if (tty->cx + width > tty->sx) {
654 tty->cx = (tty->cx + width) - tty->sx;
655 if (tty->cx <= tty->sx)
656 tty->cy++;
657 else
658 tty->cx = tty->cy = UINT_MAX;
659 } else
660 tty->cx += width;
661 }
662
663 static void
664 tty_set_italics(struct tty *tty)
665 {
666 const char *s;
667
668 if (tty_term_has(tty->term, TTYC_SITM)) {
669 s = options_get_string(global_options, "default-terminal");
670 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
671 tty_putcode(tty, TTYC_SITM);
672 return;
673 }
674 }
675 tty_putcode(tty, TTYC_SMSO);
676 }
677
678 void
679 tty_set_title(struct tty *tty, const char *title)
680 {
681 if (!tty_term_has(tty->term, TTYC_TSL) ||
682 !tty_term_has(tty->term, TTYC_FSL))
683 return;
684
685 tty_putcode(tty, TTYC_TSL);
686 tty_puts(tty, title);
687 tty_putcode(tty, TTYC_FSL);
688 }
689
690 void
691 tty_set_path(struct tty *tty, const char *title)
692 {
693 if (!tty_term_has(tty->term, TTYC_SWD) ||
694 !tty_term_has(tty->term, TTYC_FSL))
695 return;
696
697 tty_putcode(tty, TTYC_SWD);
698 tty_puts(tty, title);
699 tty_putcode(tty, TTYC_FSL);
700 }
701
702 static void
703 tty_force_cursor_colour(struct tty *tty, int c)
704 {
705 u_char r, g, b;
706 char s[13];
707
708 if (c != -1)
709 c = colour_force_rgb(c);
710 if (c == tty->ccolour)
711 return;
712 if (c == -1)
713 tty_putcode(tty, TTYC_CR);
714 else {
715 colour_split_rgb(c, &r, &g, &b);
716 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
717 tty_putcode_s(tty, TTYC_CS, s);
718 }
719 tty->ccolour = c;
720 }
721
722 static int
723 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
724 {
725 enum screen_cursor_style cstyle;
726 int ccolour, changed, cmode = mode;
727
728 /* Set cursor colour if changed. */
729 if (s != NULL) {
730 ccolour = s->ccolour;
731 if (s->ccolour == -1)
732 ccolour = s->default_ccolour;
733 tty_force_cursor_colour(tty, ccolour);
734 }
735
736 /* If cursor is off, set as invisible. */
737 if (~cmode & MODE_CURSOR) {
738 if (tty->mode & MODE_CURSOR)
739 tty_putcode(tty, TTYC_CIVIS);
740 return (cmode);
741 }
742
743 /* Check if blinking or very visible flag changed or style changed. */
744 if (s == NULL)
745 cstyle = tty->cstyle;
746 else {
747 cstyle = s->cstyle;
748 if (cstyle == SCREEN_CURSOR_DEFAULT) {
749 if (~cmode & MODE_CURSOR_BLINKING_SET) {
750 if (s->default_mode & MODE_CURSOR_BLINKING)
751 cmode |= MODE_CURSOR_BLINKING;
752 else
753 cmode &= ~MODE_CURSOR_BLINKING;
754 }
755 cstyle = s->default_cstyle;
756 }
757 }
758
759 /* If nothing changed, do nothing. */
760 changed = cmode ^ tty->mode;
761 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
762 return (cmode);
763
764 /*
765 * Set cursor style. If an explicit style has been set with DECSCUSR,
766 * set it if supported, otherwise send cvvis for blinking styles.
767 *
768 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
769 * if either the blinking or very visible flags are set.
770 */
771 tty_putcode(tty, TTYC_CNORM);
772 switch (cstyle) {
773 case SCREEN_CURSOR_DEFAULT:
774 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
775 if (tty_term_has(tty->term, TTYC_SE))
776 tty_putcode(tty, TTYC_SE);
777 else
778 tty_putcode_i(tty, TTYC_SS, 0);
779 }
780 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
781 tty_putcode(tty, TTYC_CVVIS);
782 break;
783 case SCREEN_CURSOR_BLOCK:
784 if (tty_term_has(tty->term, TTYC_SS)) {
785 if (cmode & MODE_CURSOR_BLINKING)
786 tty_putcode_i(tty, TTYC_SS, 1);
787 else
788 tty_putcode_i(tty, TTYC_SS, 2);
789 } else if (cmode & MODE_CURSOR_BLINKING)
790 tty_putcode(tty, TTYC_CVVIS);
791 break;
792 case SCREEN_CURSOR_UNDERLINE:
793 if (tty_term_has(tty->term, TTYC_SS)) {
794 if (cmode & MODE_CURSOR_BLINKING)
795 tty_putcode_i(tty, TTYC_SS, 3);
796 else
797 tty_putcode_i(tty, TTYC_SS, 4);
798 } else if (cmode & MODE_CURSOR_BLINKING)
799 tty_putcode(tty, TTYC_CVVIS);
800 break;
801 case SCREEN_CURSOR_BAR:
802 if (tty_term_has(tty->term, TTYC_SS)) {
803 if (cmode & MODE_CURSOR_BLINKING)
804 tty_putcode_i(tty, TTYC_SS, 5);
805 else
806 tty_putcode_i(tty, TTYC_SS, 6);
807 } else if (cmode & MODE_CURSOR_BLINKING)
808 tty_putcode(tty, TTYC_CVVIS);
809 break;
810 }
811 tty->cstyle = cstyle;
812 return (cmode);
813 }
814
815 void
816 tty_update_mode(struct tty *tty, int mode, struct screen *s)
817 {
818 struct tty_term *term = tty->term;
819 struct client *c = tty->client;
820 int changed;
821
822 if (tty->flags & TTY_NOCURSOR)
823 mode &= ~MODE_CURSOR;
824
825 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
826 mode |= MODE_CURSOR_BLINKING;
827 else
828 mode &= ~MODE_CURSOR_BLINKING;
829
830 changed = mode ^ tty->mode;
831 if (log_get_level() != 0 && changed != 0) {
832 log_debug("%s: current mode %s", c->name,
833 screen_mode_to_string(tty->mode));
834 log_debug("%s: setting mode %s", c->name,
835 screen_mode_to_string(mode));
836 }
837
838 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
839 /*
840 * If the mouse modes have changed, clear then all and apply
841 * again. There are differences in how terminals track the
842 * various bits.
843 */
844 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
845 if (mode & ALL_MOUSE_MODES)
846 tty_puts(tty, "\033[?1006h");
847 if (mode & MODE_MOUSE_ALL)
848 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
849 else if (mode & MODE_MOUSE_BUTTON)
850 tty_puts(tty, "\033[?1000h\033[?1002h");
851 else if (mode & MODE_MOUSE_STANDARD)
852 tty_puts(tty, "\033[?1000h");
853 }
854 tty->mode = mode;
855 }
856
857 static void
858 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
859 enum tty_code_code code1, u_int n)
860 {
861 if (tty_term_has(tty->term, code))
862 tty_putcode_i(tty, code, n);
863 else {
864 while (n-- > 0)
865 tty_putcode(tty, code1);
866 }
867 }
868
869 static void
870 tty_repeat_space(struct tty *tty, u_int n)
871 {
872 static char s[500];
873
874 if (*s != ' ')
875 memset(s, ' ', sizeof s);
876
877 while (n > sizeof s) {
878 tty_putn(tty, s, sizeof s, sizeof s);
879 n -= sizeof s;
880 }
881 if (n != 0)
882 tty_putn(tty, s, n, n);
883 }
884
885 /* Is this window bigger than the terminal? */
886 int
887 tty_window_bigger(struct tty *tty)
888 {
889 struct client *c = tty->client;
890 struct window *w = c->session->curw->window;
891
892 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
893 }
894
895 /* What offset should this window be drawn at? */
896 int
897 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
898 {
899 *ox = tty->oox;
900 *oy = tty->ooy;
901 *sx = tty->osx;
902 *sy = tty->osy;
903
904 return (tty->oflag);
905 }
906
907 /* What offset should this window be drawn at? */
908 static int
909 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
910 {
911 struct client *c = tty->client;
912 struct window *w = c->session->curw->window;
913 struct window_pane *wp = server_client_get_pane(c);
914 u_int cx, cy, lines;
915
916 lines = status_line_size(c);
917
918 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
919 *ox = 0;
920 *oy = 0;
921 *sx = w->sx;
922 *sy = w->sy;
923
924 c->pan_window = NULL;
925 return (0);
926 }
927
928 *sx = tty->sx;
929 *sy = tty->sy - lines;
930
931 if (c->pan_window == w) {
932 if (*sx >= w->sx)
933 c->pan_ox = 0;
934 else if (c->pan_ox + *sx > w->sx)
935 c->pan_ox = w->sx - *sx;
936 *ox = c->pan_ox;
937 if (*sy >= w->sy)
938 c->pan_oy = 0;
939 else if (c->pan_oy + *sy > w->sy)
940 c->pan_oy = w->sy - *sy;
941 *oy = c->pan_oy;
942 return (1);
943 }
944
945 if (~wp->screen->mode & MODE_CURSOR) {
946 *ox = 0;
947 *oy = 0;
948 } else {
949 cx = wp->xoff + wp->screen->cx;
950 cy = wp->yoff + wp->screen->cy;
951
952 if (cx < *sx)
953 *ox = 0;
954 else if (cx > w->sx - *sx)
955 *ox = w->sx - *sx;
956 else
957 *ox = cx - *sx / 2;
958
959 if (cy < *sy)
960 *oy = 0;
961 else if (cy > w->sy - *sy)
962 *oy = w->sy - *sy;
963 else
964 *oy = cy - *sy / 2;
965 }
966
967 c->pan_window = NULL;
968 return (1);
969 }
970
971 /* Update stored offsets for a window and redraw if necessary. */
972 void
973 tty_update_window_offset(struct window *w)
974 {
975 struct client *c;
976
977 TAILQ_FOREACH(c, &clients, entry) {
978 if (c->session != NULL &&
979 c->session->curw != NULL &&
980 c->session->curw->window == w)
981 tty_update_client_offset(c);
982 }
983 }
984
985 /* Update stored offsets for a client and redraw if necessary. */
986 void
987 tty_update_client_offset(struct client *c)
988 {
989 u_int ox, oy, sx, sy;
990
991 if (~c->flags & CLIENT_TERMINAL)
992 return;
993
994 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
995 if (ox == c->tty.oox &&
996 oy == c->tty.ooy &&
997 sx == c->tty.osx &&
998 sy == c->tty.osy)
999 return;
1000
1001 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
1002 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
1003 ox, oy, sx, sy);
1004
1005 c->tty.oox = ox;
1006 c->tty.ooy = oy;
1007 c->tty.osx = sx;
1008 c->tty.osy = sy;
1009
1010 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
1011 }
1012
1013 /*
1014 * Is the region large enough to be worth redrawing once later rather than
1015 * probably several times now? Currently yes if it is more than 50% of the
1016 * pane.
1017 */
1018 static int
1019 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1020 {
1021 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
1022 }
1023
1024 /*
1025 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1026 * emulated.
1027 */
1028 static int
1029 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1030 {
1031 if (tty_term_flag(tty->term, TTYC_BCE))
1032 return (0);
1033 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1034 return (1);
1035 return (0);
1036 }
1037
1038 /*
1039 * Redraw scroll region using data from screen (already updated). Used when
1040 * CSR not supported, or window is a pane that doesn't take up the full
1041 * width of the terminal.
1042 */
1043 static void
1044 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1045 {
1046 struct client *c = tty->client;
1047 u_int i;
1048
1049 /*
1050 * If region is large, schedule a redraw. In most cases this is likely
1051 * to be followed by some more scrolling.
1052 */
1053 if (tty_large_region(tty, ctx)) {
1054 log_debug("%s: %s large redraw", __func__, c->name);
1055 ctx->redraw_cb(ctx);
1056 return;
1057 }
1058
1059 for (i = ctx->orupper; i <= ctx->orlower; i++)
1060 tty_draw_pane(tty, ctx, i);
1061 }
1062
1063 /* Is this position visible in the pane? */
1064 static int
1065 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1066 u_int py, u_int nx, u_int ny)
1067 {
1068 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1069
1070 if (!ctx->bigger)
1071 return (1);
1072
1073 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1074 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1075 return (0);
1076 return (1);
1077 }
1078
1079 /* Clamp line position to visible part of pane. */
1080 static int
1081 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1082 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1083 {
1084 u_int xoff = ctx->rxoff + px;
1085
1086 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1087 return (0);
1088 *ry = ctx->yoff + py - ctx->woy;
1089
1090 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1091 /* All visible. */
1092 *i = 0;
1093 *x = ctx->xoff + px - ctx->wox;
1094 *rx = nx;
1095 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1096 /* Both left and right not visible. */
1097 *i = ctx->wox;
1098 *x = 0;
1099 *rx = ctx->wsx;
1100 } else if (xoff < ctx->wox) {
1101 /* Left not visible. */
1102 *i = ctx->wox - (ctx->xoff + px);
1103 *x = 0;
1104 *rx = nx - *i;
1105 } else {
1106 /* Right not visible. */
1107 *i = 0;
1108 *x = (ctx->xoff + px) - ctx->wox;
1109 *rx = ctx->wsx - *x;
1110 }
1111 if (*rx > nx)
1112 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1113
1114 return (1);
1115 }
1116
1117 /* Clear a line. */
1118 static void
1119 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1120 u_int px, u_int nx, u_int bg)
1121 {
1122 struct client *c = tty->client;
1123 struct overlay_ranges r;
1124 u_int i;
1125
1126 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1127
1128 /* Nothing to clear. */
1129 if (nx == 0)
1130 return;
1131
1132 /* If genuine BCE is available, can try escape sequences. */
1133 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1134 /* Off the end of the line, use EL if available. */
1135 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1136 tty_cursor(tty, px, py);
1137 tty_putcode(tty, TTYC_EL);
1138 return;
1139 }
1140
1141 /* At the start of the line. Use EL1. */
1142 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1143 tty_cursor(tty, px + nx - 1, py);
1144 tty_putcode(tty, TTYC_EL1);
1145 return;
1146 }
1147
1148 /* Section of line. Use ECH if possible. */
1149 if (tty_term_has(tty->term, TTYC_ECH)) {
1150 tty_cursor(tty, px, py);
1151 tty_putcode_i(tty, TTYC_ECH, nx);
1152 return;
1153 }
1154 }
1155
1156 /*
1157 * Couldn't use an escape sequence, use spaces. Clear only the visible
1158 * bit if there is an overlay.
1159 */
1160 tty_check_overlay_range(tty, px, py, nx, &r);
1161 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1162 if (r.nx[i] == 0)
1163 continue;
1164 tty_cursor(tty, r.px[i], py);
1165 tty_repeat_space(tty, r.nx[i]);
1166 }
1167 }
1168
1169 /* Clear a line, adjusting to visible part of pane. */
1170 static void
1171 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1172 u_int px, u_int nx, u_int bg)
1173 {
1174 struct client *c = tty->client;
1175 u_int i, x, rx, ry;
1176
1177 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1178
1179 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1180 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1181 }
1182
1183 /* Clamp area position to visible part of pane. */
1184 static int
1185 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1186 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1187 u_int *ry)
1188 {
1189 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1190
1191 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1192 return (0);
1193
1194 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1195 /* All visible. */
1196 *i = 0;
1197 *x = ctx->xoff + px - ctx->wox;
1198 *rx = nx;
1199 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1200 /* Both left and right not visible. */
1201 *i = ctx->wox;
1202 *x = 0;
1203 *rx = ctx->wsx;
1204 } else if (xoff < ctx->wox) {
1205 /* Left not visible. */
1206 *i = ctx->wox - (ctx->xoff + px);
1207 *x = 0;
1208 *rx = nx - *i;
1209 } else {
1210 /* Right not visible. */
1211 *i = 0;
1212 *x = (ctx->xoff + px) - ctx->wox;
1213 *rx = ctx->wsx - *x;
1214 }
1215 if (*rx > nx)
1216 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1217
1218 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1219 /* All visible. */
1220 *j = 0;
1221 *y = ctx->yoff + py - ctx->woy;
1222 *ry = ny;
1223 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1224 /* Both top and bottom not visible. */
1225 *j = ctx->woy;
1226 *y = 0;
1227 *ry = ctx->wsy;
1228 } else if (yoff < ctx->woy) {
1229 /* Top not visible. */
1230 *j = ctx->woy - (ctx->yoff + py);
1231 *y = 0;
1232 *ry = ny - *j;
1233 } else {
1234 /* Bottom not visible. */
1235 *j = 0;
1236 *y = (ctx->yoff + py) - ctx->woy;
1237 *ry = ctx->wsy - *y;
1238 }
1239 if (*ry > ny)
1240 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1241
1242 return (1);
1243 }
1244
1245 /* Clear an area, adjusting to visible part of pane. */
1246 static void
1247 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1248 u_int ny, u_int px, u_int nx, u_int bg)
1249 {
1250 struct client *c = tty->client;
1251 u_int yy;
1252 char tmp[64];
1253
1254 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1255
1256 /* Nothing to clear. */
1257 if (nx == 0 || ny == 0)
1258 return;
1259
1260 /* If genuine BCE is available, can try escape sequences. */
1261 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1262 /* Use ED if clearing off the bottom of the terminal. */
1263 if (px == 0 &&
1264 px + nx >= tty->sx &&
1265 py + ny >= tty->sy &&
1266 tty_term_has(tty->term, TTYC_ED)) {
1267 tty_cursor(tty, 0, py);
1268 tty_putcode(tty, TTYC_ED);
1269 return;
1270 }
1271
1272 /*
1273 * On VT420 compatible terminals we can use DECFRA if the
1274 * background colour isn't default (because it doesn't work
1275 * after SGR 0).
1276 */
1277 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1278 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1279 py + 1, px + 1, py + ny, px + nx);
1280 tty_puts(tty, tmp);
1281 return;
1282 }
1283
1284 /* Full lines can be scrolled away to clear them. */
1285 if (px == 0 &&
1286 px + nx >= tty->sx &&
1287 ny > 2 &&
1288 tty_term_has(tty->term, TTYC_CSR) &&
1289 tty_term_has(tty->term, TTYC_INDN)) {
1290 tty_region(tty, py, py + ny - 1);
1291 tty_margin_off(tty);
1292 tty_putcode_i(tty, TTYC_INDN, ny);
1293 return;
1294 }
1295
1296 /*
1297 * If margins are supported, can just scroll the area off to
1298 * clear it.
1299 */
1300 if (nx > 2 &&
1301 ny > 2 &&
1302 tty_term_has(tty->term, TTYC_CSR) &&
1303 tty_use_margin(tty) &&
1304 tty_term_has(tty->term, TTYC_INDN)) {
1305 tty_region(tty, py, py + ny - 1);
1306 tty_margin(tty, px, px + nx - 1);
1307 tty_putcode_i(tty, TTYC_INDN, ny);
1308 return;
1309 }
1310 }
1311
1312 /* Couldn't use an escape sequence, loop over the lines. */
1313 for (yy = py; yy < py + ny; yy++)
1314 tty_clear_line(tty, defaults, yy, px, nx, bg);
1315 }
1316
1317 /* Clear an area in a pane. */
1318 static void
1319 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1320 u_int ny, u_int px, u_int nx, u_int bg)
1321 {
1322 u_int i, j, x, y, rx, ry;
1323
1324 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1325 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1326 }
1327
1328 static void
1329 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1330 {
1331 struct screen *s = ctx->s;
1332 u_int nx = ctx->sx, i, x, rx, ry;
1333
1334 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1335
1336 if (!ctx->bigger) {
1337 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1338 &ctx->defaults, ctx->palette);
1339 return;
1340 }
1341 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1342 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1343 ctx->palette);
1344 }
1345 }
1346
1347 static const struct grid_cell *
1348 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1349 {
1350 static struct grid_cell new;
1351 int c;
1352
1353 /* Characters less than 0x7f are always fine, no matter what. */
1354 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1355 return (gc);
1356
1357 /* UTF-8 terminal and a UTF-8 character - fine. */
1358 if (tty->client->flags & CLIENT_UTF8)
1359 return (gc);
1360 memcpy(&new, gc, sizeof new);
1361
1362 /* See if this can be mapped to an ACS character. */
1363 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1364 if (c != -1) {
1365 utf8_set(&new.data, c);
1366 new.attr |= GRID_ATTR_CHARSET;
1367 return (&new);
1368 }
1369
1370 /* Replace by the right number of underscores. */
1371 new.data.size = gc->data.width;
1372 if (new.data.size > UTF8_SIZE)
1373 new.data.size = UTF8_SIZE;
1374 memset(new.data.data, '_', new.data.size);
1375 return (&new);
1376 }
1377
1378 /*
1379 * Check if a single character is obstructed by the overlay and return a
1380 * boolean.
1381 */
1382 static int
1383 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1384 {
1385 struct overlay_ranges r;
1386
1387 /*
1388 * A unit width range will always return nx[2] == 0 from a check, even
1389 * with multiple overlays, so it's sufficient to check just the first
1390 * two entries.
1391 */
1392 tty_check_overlay_range(tty, px, py, 1, &r);
1393 if (r.nx[0] + r.nx[1] == 0)
1394 return (0);
1395 return (1);
1396 }
1397
1398 /* Return parts of the input range which are visible. */
1399 static void
1400 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1401 struct overlay_ranges *r)
1402 {
1403 struct client *c = tty->client;
1404
1405 if (c->overlay_check == NULL) {
1406 r->px[0] = px;
1407 r->nx[0] = nx;
1408 r->px[1] = 0;
1409 r->nx[1] = 0;
1410 r->px[2] = 0;
1411 r->nx[2] = 0;
1412 return;
1413 }
1414
1415 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1416 }
1417
1418 void
1419 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1420 u_int atx, u_int aty, const struct grid_cell *defaults,
1421 struct colour_palette *palette)
1422 {
1423 struct grid *gd = s->grid;
1424 struct grid_cell gc, last;
1425 const struct grid_cell *gcp;
1426 struct grid_line *gl;
1427 struct client *c = tty->client;
1428 struct overlay_ranges r;
1429 u_int i, j, ux, sx, width, hidden, eux, nxx;
1430 u_int cellsize;
1431 int flags, cleared = 0, wrapped = 0;
1432 char buf[512];
1433 size_t len;
1434
1435 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1436 px, py, nx, atx, aty);
1437 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1438 defaults->bg);
1439
1440 /*
1441 * py is the line in the screen to draw.
1442 * px is the start x and nx is the width to draw.
1443 * atx,aty is the line on the terminal to draw it.
1444 */
1445
1446 flags = (tty->flags & TTY_NOCURSOR);
1447 tty->flags |= TTY_NOCURSOR;
1448 tty_update_mode(tty, tty->mode, s);
1449
1450 tty_region_off(tty);
1451 tty_margin_off(tty);
1452
1453 /*
1454 * Clamp the width to cellsize - note this is not cellused, because
1455 * there may be empty background cells after it (from BCE).
1456 */
1457 sx = screen_size_x(s);
1458 if (nx > sx)
1459 nx = sx;
1460 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1461 if (sx > cellsize)
1462 sx = cellsize;
1463 if (sx > tty->sx)
1464 sx = tty->sx;
1465 if (sx > nx)
1466 sx = nx;
1467 ux = 0;
1468
1469 if (py == 0)
1470 gl = NULL;
1471 else
1472 gl = grid_get_line(gd, gd->hsize + py - 1);
1473 if (gl == NULL ||
1474 (~gl->flags & GRID_LINE_WRAPPED) ||
1475 atx != 0 ||
1476 tty->cx < tty->sx ||
1477 nx < tty->sx) {
1478 if (nx < tty->sx &&
1479 atx == 0 &&
1480 px + sx != nx &&
1481 tty_term_has(tty->term, TTYC_EL1) &&
1482 !tty_fake_bce(tty, defaults, 8) &&
1483 c->overlay_check == NULL) {
1484 tty_default_attributes(tty, defaults, palette, 8,
1485 s->hyperlinks);
1486 tty_cursor(tty, nx - 1, aty);
1487 tty_putcode(tty, TTYC_EL1);
1488 cleared = 1;
1489 }
1490 } else {
1491 log_debug("%s: wrapped line %u", __func__, aty);
1492 wrapped = 1;
1493 }
1494
1495 memcpy(&last, &grid_default_cell, sizeof last);
1496 len = 0;
1497 width = 0;
1498
1499 for (i = 0; i < sx; i++) {
1500 grid_view_get_cell(gd, px + i, py, &gc);
1501 gcp = tty_check_codeset(tty, &gc);
1502 if (len != 0 &&
1503 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1504 (gcp->attr & GRID_ATTR_CHARSET) ||
1505 gcp->flags != last.flags ||
1506 gcp->attr != last.attr ||
1507 gcp->fg != last.fg ||
1508 gcp->bg != last.bg ||
1509 gcp->us != last.us ||
1510 gcp->link != last.link ||
1511 ux + width + gcp->data.width > nx ||
1512 (sizeof buf) - len < gcp->data.size)) {
1513 tty_attributes(tty, &last, defaults, palette,
1514 s->hyperlinks);
1515 if (last.flags & GRID_FLAG_CLEARED) {
1516 log_debug("%s: %zu cleared", __func__, len);
1517 tty_clear_line(tty, defaults, aty, atx + ux,
1518 width, last.bg);
1519 } else {
1520 if (!wrapped || atx != 0 || ux != 0)
1521 tty_cursor(tty, atx + ux, aty);
1522 tty_putn(tty, buf, len, width);
1523 }
1524 ux += width;
1525
1526 len = 0;
1527 width = 0;
1528 wrapped = 0;
1529 }
1530
1531 if (gcp->flags & GRID_FLAG_SELECTED)
1532 screen_select_cell(s, &last, gcp);
1533 else
1534 memcpy(&last, gcp, sizeof last);
1535
1536 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1537 &r);
1538 hidden = 0;
1539 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1540 hidden += r.nx[j];
1541 hidden = gcp->data.width - hidden;
1542 if (hidden != 0 && hidden == gcp->data.width) {
1543 if (~gcp->flags & GRID_FLAG_PADDING)
1544 ux += gcp->data.width;
1545 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1546 if (~gcp->flags & GRID_FLAG_PADDING) {
1547 tty_attributes(tty, &last, defaults, palette,
1548 s->hyperlinks);
1549 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1550 if (r.nx[j] == 0)
1551 continue;
1552 /* Effective width drawn so far. */
1553 eux = r.px[j] - atx;
1554 if (eux < nx) {
1555 tty_cursor(tty, r.px[j], aty);
1556 nxx = nx - eux;
1557 if (r.nx[j] > nxx)
1558 r.nx[j] = nxx;
1559 tty_repeat_space(tty, r.nx[j]);
1560 ux = eux + r.nx[j];
1561 }
1562 }
1563 }
1564 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1565 tty_attributes(tty, &last, defaults, palette,
1566 s->hyperlinks);
1567 tty_cursor(tty, atx + ux, aty);
1568 for (j = 0; j < gcp->data.size; j++)
1569 tty_putc(tty, gcp->data.data[j]);
1570 ux += gcp->data.width;
1571 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1572 memcpy(buf + len, gcp->data.data, gcp->data.size);
1573 len += gcp->data.size;
1574 width += gcp->data.width;
1575 }
1576 }
1577 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1578 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1579 if (last.flags & GRID_FLAG_CLEARED) {
1580 log_debug("%s: %zu cleared (end)", __func__, len);
1581 tty_clear_line(tty, defaults, aty, atx + ux, width,
1582 last.bg);
1583 } else {
1584 if (!wrapped || atx != 0 || ux != 0)
1585 tty_cursor(tty, atx + ux, aty);
1586 tty_putn(tty, buf, len, width);
1587 }
1588 ux += width;
1589 }
1590
1591 if (!cleared && ux < nx) {
1592 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1593 nx - ux, len);
1594 tty_default_attributes(tty, defaults, palette, 8,
1595 s->hyperlinks);
1596 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1597 }
1598
1599 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1600 tty_update_mode(tty, tty->mode, s);
1601 }
1602
1603 void
1604 tty_sync_start(struct tty *tty)
1605 {
1606 if (tty->flags & TTY_BLOCK)
1607 return;
1608 if (tty->flags & TTY_SYNCING)
1609 return;
1610 tty->flags |= TTY_SYNCING;
1611
1612 if (tty_term_has(tty->term, TTYC_SYNC)) {
1613 log_debug("%s sync start", tty->client->name);
1614 tty_putcode_i(tty, TTYC_SYNC, 1);
1615 }
1616 }
1617
1618 void
1619 tty_sync_end(struct tty *tty)
1620 {
1621 if (tty->flags & TTY_BLOCK)
1622 return;
1623 if (~tty->flags & TTY_SYNCING)
1624 return;
1625 tty->flags &= ~TTY_SYNCING;
1626
1627 if (tty_term_has(tty->term, TTYC_SYNC)) {
1628 log_debug("%s sync end", tty->client->name);
1629 tty_putcode_i(tty, TTYC_SYNC, 2);
1630 }
1631 }
1632
1633 static int
1634 tty_client_ready(const struct tty_ctx *ctx, struct client *c)
1635 {
1636 if (c->session == NULL || c->tty.term == NULL)
1637 return (0);
1638 if (c->flags & CLIENT_SUSPENDED)
1639 return (0);
1640
1641 /*
1642 * If invisible panes are allowed (used for passthrough), don't care if
1643 * redrawing or frozen.
1644 */
1645 if (ctx->allow_invisible_panes)
1646 return (1);
1647
1648 if (c->flags & CLIENT_REDRAWWINDOW)
1649 return (0);
1650 if (c->tty.flags & TTY_FREEZE)
1651 return (0);
1652 return (1);
1653 }
1654
1655 void
1656 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1657 struct tty_ctx *ctx)
1658 {
1659 struct client *c;
1660 int state;
1661
1662 if (ctx->set_client_cb == NULL)
1663 return;
1664 TAILQ_FOREACH(c, &clients, entry) {
1665 if (tty_client_ready(ctx, c)) {
1666 state = ctx->set_client_cb(ctx, c);
1667 if (state == -1)
1668 break;
1669 if (state == 0)
1670 continue;
1671 cmdfn(&c->tty, ctx);
1672 }
1673 }
1674 }
1675
1676 void
1677 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1678 {
1679 struct client *c = tty->client;
1680
1681 if (ctx->bigger ||
1682 !tty_full_width(tty, ctx) ||
1683 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1684 (!tty_term_has(tty->term, TTYC_ICH) &&
1685 !tty_term_has(tty->term, TTYC_ICH1)) ||
1686 c->overlay_check != NULL) {
1687 tty_draw_pane(tty, ctx, ctx->ocy);
1688 return;
1689 }
1690
1691 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1692 ctx->s->hyperlinks);
1693
1694 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1695
1696 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1697 }
1698
1699 void
1700 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1701 {
1702 struct client *c = tty->client;
1703
1704 if (ctx->bigger ||
1705 !tty_full_width(tty, ctx) ||
1706 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1707 (!tty_term_has(tty->term, TTYC_DCH) &&
1708 !tty_term_has(tty->term, TTYC_DCH1)) ||
1709 c->overlay_check != NULL) {
1710 tty_draw_pane(tty, ctx, ctx->ocy);
1711 return;
1712 }
1713
1714 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1715 ctx->s->hyperlinks);
1716
1717 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1718
1719 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1720 }
1721
1722 void
1723 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1724 {
1725 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1726 ctx->s->hyperlinks);
1727
1728 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1729 }
1730
1731 void
1732 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1733 {
1734 struct client *c = tty->client;
1735
1736 if (ctx->bigger ||
1737 !tty_full_width(tty, ctx) ||
1738 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1739 !tty_term_has(tty->term, TTYC_CSR) ||
1740 !tty_term_has(tty->term, TTYC_IL1) ||
1741 ctx->sx == 1 ||
1742 ctx->sy == 1 ||
1743 c->overlay_check != NULL) {
1744 tty_redraw_region(tty, ctx);
1745 return;
1746 }
1747
1748 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1749 ctx->s->hyperlinks);
1750
1751 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1752 tty_margin_off(tty);
1753 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1754
1755 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1756 tty->cx = tty->cy = UINT_MAX;
1757 }
1758
1759 void
1760 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1761 {
1762 struct client *c = tty->client;
1763
1764 if (ctx->bigger ||
1765 !tty_full_width(tty, ctx) ||
1766 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1767 !tty_term_has(tty->term, TTYC_CSR) ||
1768 !tty_term_has(tty->term, TTYC_DL1) ||
1769 ctx->sx == 1 ||
1770 ctx->sy == 1 ||
1771 c->overlay_check != NULL) {
1772 tty_redraw_region(tty, ctx);
1773 return;
1774 }
1775
1776 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1777 ctx->s->hyperlinks);
1778
1779 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1780 tty_margin_off(tty);
1781 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1782
1783 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1784 tty->cx = tty->cy = UINT_MAX;
1785 }
1786
1787 void
1788 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1789 {
1790 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1791 ctx->s->hyperlinks);
1792
1793 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1794 }
1795
1796 void
1797 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1798 {
1799 u_int nx = ctx->sx - ctx->ocx;
1800
1801 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1802 ctx->s->hyperlinks);
1803
1804 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1805 }
1806
1807 void
1808 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1809 {
1810 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1811 ctx->s->hyperlinks);
1812
1813 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1814 }
1815
1816 void
1817 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1818 {
1819 struct client *c = tty->client;
1820
1821 if (ctx->ocy != ctx->orupper)
1822 return;
1823
1824 if (ctx->bigger ||
1825 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1826 tty_fake_bce(tty, &ctx->defaults, 8) ||
1827 !tty_term_has(tty->term, TTYC_CSR) ||
1828 (!tty_term_has(tty->term, TTYC_RI) &&
1829 !tty_term_has(tty->term, TTYC_RIN)) ||
1830 ctx->sx == 1 ||
1831 ctx->sy == 1 ||
1832 c->overlay_check != NULL) {
1833 tty_redraw_region(tty, ctx);
1834 return;
1835 }
1836
1837 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1838 ctx->s->hyperlinks);
1839
1840 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1841 tty_margin_pane(tty, ctx);
1842 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1843
1844 if (tty_term_has(tty->term, TTYC_RI))
1845 tty_putcode(tty, TTYC_RI);
1846 else
1847 tty_putcode_i(tty, TTYC_RIN, 1);
1848 }
1849
1850 void
1851 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1852 {
1853 struct client *c = tty->client;
1854
1855 if (ctx->ocy != ctx->orlower)
1856 return;
1857
1858 if (ctx->bigger ||
1859 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1860 tty_fake_bce(tty, &ctx->defaults, 8) ||
1861 !tty_term_has(tty->term, TTYC_CSR) ||
1862 ctx->sx == 1 ||
1863 ctx->sy == 1 ||
1864 c->overlay_check != NULL) {
1865 tty_redraw_region(tty, ctx);
1866 return;
1867 }
1868
1869 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1870 ctx->s->hyperlinks);
1871
1872 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1873 tty_margin_pane(tty, ctx);
1874
1875 /*
1876 * If we want to wrap a pane while using margins, the cursor needs to
1877 * be exactly on the right of the region. If the cursor is entirely off
1878 * the edge - move it back to the right. Some terminals are funny about
1879 * this and insert extra spaces, so only use the right if margins are
1880 * enabled.
1881 */
1882 if (ctx->xoff + ctx->ocx > tty->rright) {
1883 if (!tty_use_margin(tty))
1884 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1885 else
1886 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1887 } else
1888 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1889
1890 tty_putc(tty, '\n');
1891 }
1892
1893 void
1894 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1895 {
1896 struct client *c = tty->client;
1897 u_int i;
1898
1899 if (ctx->bigger ||
1900 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1901 tty_fake_bce(tty, &ctx->defaults, 8) ||
1902 !tty_term_has(tty->term, TTYC_CSR) ||
1903 ctx->sx == 1 ||
1904 ctx->sy == 1 ||
1905 c->overlay_check != NULL) {
1906 tty_redraw_region(tty, ctx);
1907 return;
1908 }
1909
1910 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1911 ctx->s->hyperlinks);
1912
1913 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1914 tty_margin_pane(tty, ctx);
1915
1916 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1917 if (!tty_use_margin(tty))
1918 tty_cursor(tty, 0, tty->rlower);
1919 else
1920 tty_cursor(tty, tty->rright, tty->rlower);
1921 for (i = 0; i < ctx->num; i++)
1922 tty_putc(tty, '\n');
1923 } else {
1924 if (tty->cy == UINT_MAX)
1925 tty_cursor(tty, 0, 0);
1926 else
1927 tty_cursor(tty, 0, tty->cy);
1928 tty_putcode_i(tty, TTYC_INDN, ctx->num);
1929 }
1930 }
1931
1932 void
1933 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1934 {
1935 u_int i;
1936 struct client *c = tty->client;
1937
1938 if (ctx->bigger ||
1939 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1940 tty_fake_bce(tty, &ctx->defaults, 8) ||
1941 !tty_term_has(tty->term, TTYC_CSR) ||
1942 (!tty_term_has(tty->term, TTYC_RI) &&
1943 !tty_term_has(tty->term, TTYC_RIN)) ||
1944 ctx->sx == 1 ||
1945 ctx->sy == 1 ||
1946 c->overlay_check != NULL) {
1947 tty_redraw_region(tty, ctx);
1948 return;
1949 }
1950
1951 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1952 ctx->s->hyperlinks);
1953
1954 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1955 tty_margin_pane(tty, ctx);
1956 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1957
1958 if (tty_term_has(tty->term, TTYC_RIN))
1959 tty_putcode_i(tty, TTYC_RIN, ctx->num);
1960 else {
1961 for (i = 0; i < ctx->num; i++)
1962 tty_putcode(tty, TTYC_RI);
1963 }
1964 }
1965
1966 void
1967 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1968 {
1969 u_int px, py, nx, ny;
1970
1971 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1972 ctx->s->hyperlinks);
1973
1974 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1975 tty_margin_off(tty);
1976
1977 px = 0;
1978 nx = ctx->sx;
1979 py = ctx->ocy + 1;
1980 ny = ctx->sy - ctx->ocy - 1;
1981
1982 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1983
1984 px = ctx->ocx;
1985 nx = ctx->sx - ctx->ocx;
1986 py = ctx->ocy;
1987
1988 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1989 }
1990
1991 void
1992 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1993 {
1994 u_int px, py, nx, ny;
1995
1996 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1997 ctx->s->hyperlinks);
1998
1999 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2000 tty_margin_off(tty);
2001
2002 px = 0;
2003 nx = ctx->sx;
2004 py = 0;
2005 ny = ctx->ocy;
2006
2007 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2008
2009 px = 0;
2010 nx = ctx->ocx + 1;
2011 py = ctx->ocy;
2012
2013 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
2014 }
2015
2016 void
2017 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
2018 {
2019 u_int px, py, nx, ny;
2020
2021 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
2022 ctx->s->hyperlinks);
2023
2024 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2025 tty_margin_off(tty);
2026
2027 px = 0;
2028 nx = ctx->sx;
2029 py = 0;
2030 ny = ctx->sy;
2031
2032 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2033 }
2034
2035 void
2036 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2037 {
2038 u_int i, j;
2039
2040 if (ctx->bigger) {
2041 ctx->redraw_cb(ctx);
2042 return;
2043 }
2044
2045 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2046 ctx->s->hyperlinks);
2047
2048 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2049 tty_margin_off(tty);
2050
2051 for (j = 0; j < ctx->sy; j++) {
2052 tty_cursor_pane(tty, ctx, 0, j);
2053 for (i = 0; i < ctx->sx; i++)
2054 tty_putc(tty, 'E');
2055 }
2056 }
2057
2058 void
2059 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2060 {
2061 const struct grid_cell *gcp = ctx->cell;
2062 struct screen *s = ctx->s;
2063 struct overlay_ranges r;
2064 u_int px, py, i, vis = 0;
2065
2066 px = ctx->xoff + ctx->ocx - ctx->wox;
2067 py = ctx->yoff + ctx->ocy - ctx->woy;
2068 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2069 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2070 return;
2071
2072 /* Handle partially obstructed wide characters. */
2073 if (gcp->data.width > 1) {
2074 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2075 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2076 vis += r.nx[i];
2077 if (vis < gcp->data.width) {
2078 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2079 px, py, &ctx->defaults, ctx->palette);
2080 return;
2081 }
2082 }
2083
2084 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2085 ctx->ocy == ctx->orlower &&
2086 tty_full_width(tty, ctx))
2087 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2088
2089 tty_margin_off(tty);
2090 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2091
2092 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2093 ctx->s->hyperlinks);
2094 }
2095
2096 void
2097 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2098 {
2099 struct overlay_ranges r;
2100 u_int i, px, py, cx;
2101 char *cp = ctx->ptr;
2102
2103 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2104 return;
2105
2106 if (ctx->bigger &&
2107 (ctx->xoff + ctx->ocx < ctx->wox ||
2108 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2109 if (!ctx->wrapped ||
2110 !tty_full_width(tty, ctx) ||
2111 (tty->term->flags & TERM_NOAM) ||
2112 ctx->xoff + ctx->ocx != 0 ||
2113 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2114 tty->cx < tty->sx ||
2115 tty->cy == tty->rlower)
2116 tty_draw_pane(tty, ctx, ctx->ocy);
2117 else
2118 ctx->redraw_cb(ctx);
2119 return;
2120 }
2121
2122 tty_margin_off(tty);
2123 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2124 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2125
2126 /* Get tty position from pane position for overlay check. */
2127 px = ctx->xoff + ctx->ocx - ctx->wox;
2128 py = ctx->yoff + ctx->ocy - ctx->woy;
2129
2130 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2131 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2132 if (r.nx[i] == 0)
2133 continue;
2134 /* Convert back to pane position for printing. */
2135 cx = r.px[i] - ctx->xoff + ctx->wox;
2136 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2137 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2138 }
2139 }
2140
2141 void
2142 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2143 {
2144 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2145 }
2146
2147 void
2148 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2149 size_t len)
2150 {
2151 char *encoded;
2152 size_t size;
2153
2154 if (~tty->flags & TTY_STARTED)
2155 return;
2156 if (!tty_term_has(tty->term, TTYC_MS))
2157 return;
2158
2159 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2160 encoded = xmalloc(size);
2161
2162 b64_ntop(buf, len, encoded, size);
2163 tty->flags |= TTY_NOBLOCK;
2164 tty_putcode_ss(tty, TTYC_MS, flags, encoded);
2165
2166 free(encoded);
2167 }
2168
2169 void
2170 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2171 {
2172 tty->flags |= TTY_NOBLOCK;
2173 tty_add(tty, ctx->ptr, ctx->num);
2174 tty_invalidate(tty);
2175 }
2176
2177 void
2178 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2179 {
2180 if (ctx->num == 0x11) {
2181 /*
2182 * This is an overlay and a command that moves the cursor so
2183 * start synchronized updates.
2184 */
2185 tty_sync_start(tty);
2186 } else if (~ctx->num & 0x10) {
2187 /*
2188 * This is a pane. If there is an overlay, always start;
2189 * otherwise, only if requested.
2190 */
2191 if (ctx->num || tty->client->overlay_draw != NULL)
2192 tty_sync_start(tty);
2193 }
2194 }
2195
2196 void
2197 tty_cell(struct tty *tty, const struct grid_cell *gc,
2198 const struct grid_cell *defaults, struct colour_palette *palette,
2199 struct hyperlinks *hl)
2200 {
2201 const struct grid_cell *gcp;
2202
2203 /* Skip last character if terminal is stupid. */
2204 if ((tty->term->flags & TERM_NOAM) &&
2205 tty->cy == tty->sy - 1 &&
2206 tty->cx == tty->sx - 1)
2207 return;
2208
2209 /* If this is a padding character, do nothing. */
2210 if (gc->flags & GRID_FLAG_PADDING)
2211 return;
2212
2213 /* Check the output codeset and apply attributes. */
2214 gcp = tty_check_codeset(tty, gc);
2215 tty_attributes(tty, gcp, defaults, palette, hl);
2216
2217 /* If it is a single character, write with putc to handle ACS. */
2218 if (gcp->data.size == 1) {
2219 tty_attributes(tty, gcp, defaults, palette, hl);
2220 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2221 return;
2222 tty_putc(tty, *gcp->data.data);
2223 return;
2224 }
2225
2226 /* Write the data. */
2227 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2228 }
2229
2230 void
2231 tty_reset(struct tty *tty)
2232 {
2233 struct grid_cell *gc = &tty->cell;
2234
2235 if (!grid_cells_equal(gc, &grid_default_cell)) {
2236 if (gc->link != 0)
2237 tty_putcode_ss(tty, TTYC_HLS, "", "");
2238 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2239 tty_putcode(tty, TTYC_RMACS);
2240 tty_putcode(tty, TTYC_SGR0);
2241 memcpy(gc, &grid_default_cell, sizeof *gc);
2242 }
2243 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2244 }
2245
2246 static void
2247 tty_invalidate(struct tty *tty)
2248 {
2249 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2250 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2251
2252 tty->cx = tty->cy = UINT_MAX;
2253 tty->rupper = tty->rleft = UINT_MAX;
2254 tty->rlower = tty->rright = UINT_MAX;
2255
2256 if (tty->flags & TTY_STARTED) {
2257 if (tty_use_margin(tty))
2258 tty_putcode(tty, TTYC_ENMG);
2259 tty_putcode(tty, TTYC_SGR0);
2260
2261 tty->mode = ALL_MODES;
2262 tty_update_mode(tty, MODE_CURSOR, NULL);
2263
2264 tty_cursor(tty, 0, 0);
2265 tty_region_off(tty);
2266 tty_margin_off(tty);
2267 } else
2268 tty->mode = MODE_CURSOR;
2269 }
2270
2271 /* Turn off margin. */
2272 void
2273 tty_region_off(struct tty *tty)
2274 {
2275 tty_region(tty, 0, tty->sy - 1);
2276 }
2277
2278 /* Set region inside pane. */
2279 static void
2280 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2281 u_int rlower)
2282 {
2283 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2284 ctx->yoff + rlower - ctx->woy);
2285 }
2286
2287 /* Set region at absolute position. */
2288 static void
2289 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2290 {
2291 if (tty->rlower == rlower && tty->rupper == rupper)
2292 return;
2293 if (!tty_term_has(tty->term, TTYC_CSR))
2294 return;
2295
2296 tty->rupper = rupper;
2297 tty->rlower = rlower;
2298
2299 /*
2300 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2301 * 0,0 if it is beyond the last column (they do not reset their wrap
2302 * flag so further output causes a line feed). As a workaround, do an
2303 * explicit move to 0 first.
2304 */
2305 if (tty->cx >= tty->sx) {
2306 if (tty->cy == UINT_MAX)
2307 tty_cursor(tty, 0, 0);
2308 else
2309 tty_cursor(tty, 0, tty->cy);
2310 }
2311
2312 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2313 tty->cx = tty->cy = UINT_MAX;
2314 }
2315
2316 /* Turn off margin. */
2317 void
2318 tty_margin_off(struct tty *tty)
2319 {
2320 tty_margin(tty, 0, tty->sx - 1);
2321 }
2322
2323 /* Set margin inside pane. */
2324 static void
2325 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2326 {
2327 tty_margin(tty, ctx->xoff - ctx->wox,
2328 ctx->xoff + ctx->sx - 1 - ctx->wox);
2329 }
2330
2331 /* Set margin at absolute position. */
2332 static void
2333 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2334 {
2335 if (!tty_use_margin(tty))
2336 return;
2337 if (tty->rleft == rleft && tty->rright == rright)
2338 return;
2339
2340 tty_putcode_ii(tty, TTYC_CSR, tty->rupper, tty->rlower);
2341
2342 tty->rleft = rleft;
2343 tty->rright = rright;
2344
2345 if (rleft == 0 && rright == tty->sx - 1)
2346 tty_putcode(tty, TTYC_CLMG);
2347 else
2348 tty_putcode_ii(tty, TTYC_CMG, rleft, rright);
2349 tty->cx = tty->cy = UINT_MAX;
2350 }
2351
2352 /*
2353 * Move the cursor, unless it would wrap itself when the next character is
2354 * printed.
2355 */
2356 static void
2357 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2358 u_int cx, u_int cy)
2359 {
2360 if (!ctx->wrapped ||
2361 !tty_full_width(tty, ctx) ||
2362 (tty->term->flags & TERM_NOAM) ||
2363 ctx->xoff + cx != 0 ||
2364 ctx->yoff + cy != tty->cy + 1 ||
2365 tty->cx < tty->sx ||
2366 tty->cy == tty->rlower)
2367 tty_cursor_pane(tty, ctx, cx, cy);
2368 else
2369 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2370 }
2371
2372 /* Move cursor inside pane. */
2373 static void
2374 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2375 {
2376 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2377 }
2378
2379 /* Move cursor to absolute position. */
2380 void
2381 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2382 {
2383 struct tty_term *term = tty->term;
2384 u_int thisx, thisy;
2385 int change;
2386
2387 if (tty->flags & TTY_BLOCK)
2388 return;
2389
2390 thisx = tty->cx;
2391 thisy = tty->cy;
2392
2393 /*
2394 * If in the automargin space, and want to be there, do not move.
2395 * Otherwise, force the cursor to be in range (and complain).
2396 */
2397 if (cx == thisx && cy == thisy && cx == tty->sx)
2398 return;
2399 if (cx > tty->sx - 1) {
2400 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2401 cx = tty->sx - 1;
2402 }
2403
2404 /* No change. */
2405 if (cx == thisx && cy == thisy)
2406 return;
2407
2408 /* Currently at the very end of the line - use absolute movement. */
2409 if (thisx > tty->sx - 1)
2410 goto absolute;
2411
2412 /* Move to home position (0, 0). */
2413 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2414 tty_putcode(tty, TTYC_HOME);
2415 goto out;
2416 }
2417
2418 /* Zero on the next line. */
2419 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2420 (!tty_use_margin(tty) || tty->rleft == 0)) {
2421 tty_putc(tty, '\r');
2422 tty_putc(tty, '\n');
2423 goto out;
2424 }
2425
2426 /* Moving column or row. */
2427 if (cy == thisy) {
2428 /*
2429 * Moving column only, row staying the same.
2430 */
2431
2432 /* To left edge. */
2433 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2434 tty_putc(tty, '\r');
2435 goto out;
2436 }
2437
2438 /* One to the left. */
2439 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2440 tty_putcode(tty, TTYC_CUB1);
2441 goto out;
2442 }
2443
2444 /* One to the right. */
2445 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2446 tty_putcode(tty, TTYC_CUF1);
2447 goto out;
2448 }
2449
2450 /* Calculate difference. */
2451 change = thisx - cx; /* +ve left, -ve right */
2452
2453 /*
2454 * Use HPA if change is larger than absolute, otherwise move
2455 * the cursor with CUB/CUF.
2456 */
2457 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2458 tty_putcode_i(tty, TTYC_HPA, cx);
2459 goto out;
2460 } else if (change > 0 &&
2461 tty_term_has(term, TTYC_CUB) &&
2462 !tty_use_margin(tty)) {
2463 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2464 tty_putcode(tty, TTYC_CUB1);
2465 tty_putcode(tty, TTYC_CUB1);
2466 goto out;
2467 }
2468 tty_putcode_i(tty, TTYC_CUB, change);
2469 goto out;
2470 } else if (change < 0 &&
2471 tty_term_has(term, TTYC_CUF) &&
2472 !tty_use_margin(tty)) {
2473 tty_putcode_i(tty, TTYC_CUF, -change);
2474 goto out;
2475 }
2476 } else if (cx == thisx) {
2477 /*
2478 * Moving row only, column staying the same.
2479 */
2480
2481 /* One above. */
2482 if (thisy != tty->rupper &&
2483 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2484 tty_putcode(tty, TTYC_CUU1);
2485 goto out;
2486 }
2487
2488 /* One below. */
2489 if (thisy != tty->rlower &&
2490 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2491 tty_putcode(tty, TTYC_CUD1);
2492 goto out;
2493 }
2494
2495 /* Calculate difference. */
2496 change = thisy - cy; /* +ve up, -ve down */
2497
2498 /*
2499 * Try to use VPA if change is larger than absolute or if this
2500 * change would cross the scroll region, otherwise use CUU/CUD.
2501 */
2502 if ((u_int) abs(change) > cy ||
2503 (change < 0 && cy - change > tty->rlower) ||
2504 (change > 0 && cy - change < tty->rupper)) {
2505 if (tty_term_has(term, TTYC_VPA)) {
2506 tty_putcode_i(tty, TTYC_VPA, cy);
2507 goto out;
2508 }
2509 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2510 tty_putcode_i(tty, TTYC_CUU, change);
2511 goto out;
2512 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2513 tty_putcode_i(tty, TTYC_CUD, -change);
2514 goto out;
2515 }
2516 }
2517
2518 absolute:
2519 /* Absolute movement. */
2520 tty_putcode_ii(tty, TTYC_CUP, cy, cx);
2521
2522 out:
2523 tty->cx = cx;
2524 tty->cy = cy;
2525 }
2526
2527 static void
2528 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2529 struct hyperlinks *hl)
2530 {
2531 const char *uri, *id;
2532
2533 if (gc->link == tty->cell.link)
2534 return;
2535 tty->cell.link = gc->link;
2536
2537 if (hl == NULL)
2538 return;
2539
2540 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2541 tty_putcode_ss(tty, TTYC_HLS, "", "");
2542 else
2543 tty_putcode_ss(tty, TTYC_HLS, id, uri);
2544 }
2545
2546 void
2547 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2548 const struct grid_cell *defaults, struct colour_palette *palette,
2549 struct hyperlinks *hl)
2550 {
2551 struct grid_cell *tc = &tty->cell, gc2;
2552 int changed;
2553
2554 /* Copy cell and update default colours. */
2555 memcpy(&gc2, gc, sizeof gc2);
2556 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2557 if (gc2.fg == 8)
2558 gc2.fg = defaults->fg;
2559 if (gc2.bg == 8)
2560 gc2.bg = defaults->bg;
2561 }
2562
2563 /* Ignore cell if it is the same as the last one. */
2564 if (gc2.attr == tty->last_cell.attr &&
2565 gc2.fg == tty->last_cell.fg &&
2566 gc2.bg == tty->last_cell.bg &&
2567 gc2.us == tty->last_cell.us &&
2568 gc2.link == tty->last_cell.link)
2569 return;
2570
2571 /*
2572 * If no setab, try to use the reverse attribute as a best-effort for a
2573 * non-default background. This is a bit of a hack but it doesn't do
2574 * any serious harm and makes a couple of applications happier.
2575 */
2576 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2577 if (gc2.attr & GRID_ATTR_REVERSE) {
2578 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2579 gc2.attr &= ~GRID_ATTR_REVERSE;
2580 } else {
2581 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2582 gc2.attr |= GRID_ATTR_REVERSE;
2583 }
2584 }
2585
2586 /* Fix up the colours if necessary. */
2587 tty_check_fg(tty, palette, &gc2);
2588 tty_check_bg(tty, palette, &gc2);
2589 tty_check_us(tty, palette, &gc2);
2590
2591 /*
2592 * If any bits are being cleared or the underline colour is now default,
2593 * reset everything.
2594 */
2595 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2596 tty_reset(tty);
2597
2598 /*
2599 * Set the colours. This may call tty_reset() (so it comes next) and
2600 * may add to (NOT remove) the desired attributes.
2601 */
2602 tty_colours(tty, &gc2);
2603
2604 /* Filter out attribute bits already set. */
2605 changed = gc2.attr & ~tc->attr;
2606 tc->attr = gc2.attr;
2607
2608 /* Set the attributes. */
2609 if (changed & GRID_ATTR_BRIGHT)
2610 tty_putcode(tty, TTYC_BOLD);
2611 if (changed & GRID_ATTR_DIM)
2612 tty_putcode(tty, TTYC_DIM);
2613 if (changed & GRID_ATTR_ITALICS)
2614 tty_set_italics(tty);
2615 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2616 if ((changed & GRID_ATTR_UNDERSCORE) ||
2617 !tty_term_has(tty->term, TTYC_SMULX))
2618 tty_putcode(tty, TTYC_SMUL);
2619 else if (changed & GRID_ATTR_UNDERSCORE_2)
2620 tty_putcode_i(tty, TTYC_SMULX, 2);
2621 else if (changed & GRID_ATTR_UNDERSCORE_3)
2622 tty_putcode_i(tty, TTYC_SMULX, 3);
2623 else if (changed & GRID_ATTR_UNDERSCORE_4)
2624 tty_putcode_i(tty, TTYC_SMULX, 4);
2625 else if (changed & GRID_ATTR_UNDERSCORE_5)
2626 tty_putcode_i(tty, TTYC_SMULX, 5);
2627 }
2628 if (changed & GRID_ATTR_BLINK)
2629 tty_putcode(tty, TTYC_BLINK);
2630 if (changed & GRID_ATTR_REVERSE) {
2631 if (tty_term_has(tty->term, TTYC_REV))
2632 tty_putcode(tty, TTYC_REV);
2633 else if (tty_term_has(tty->term, TTYC_SMSO))
2634 tty_putcode(tty, TTYC_SMSO);
2635 }
2636 if (changed & GRID_ATTR_HIDDEN)
2637 tty_putcode(tty, TTYC_INVIS);
2638 if (changed & GRID_ATTR_STRIKETHROUGH)
2639 tty_putcode(tty, TTYC_SMXX);
2640 if (changed & GRID_ATTR_OVERLINE)
2641 tty_putcode(tty, TTYC_SMOL);
2642 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2643 tty_putcode(tty, TTYC_SMACS);
2644
2645 /* Set hyperlink if any. */
2646 tty_hyperlink(tty, gc, hl);
2647
2648 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2649 }
2650
2651 static void
2652 tty_colours(struct tty *tty, const struct grid_cell *gc)
2653 {
2654 struct grid_cell *tc = &tty->cell;
2655 int have_ax;
2656
2657 /* No changes? Nothing is necessary. */
2658 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2659 return;
2660
2661 /*
2662 * Is either the default colour? This is handled specially because the
2663 * best solution might be to reset both colours to default, in which
2664 * case if only one is default need to fall onward to set the other
2665 * colour.
2666 */
2667 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2668 /*
2669 * If don't have AX but do have op, send sgr0 (op can't
2670 * actually be used because it is sometimes the same as sgr0
2671 * and sometimes isn't). This resets both colours to default.
2672 *
2673 * Otherwise, try to set the default colour only as needed.
2674 */
2675 have_ax = tty_term_flag(tty->term, TTYC_AX);
2676 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2677 tty_reset(tty);
2678 else {
2679 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2680 if (have_ax)
2681 tty_puts(tty, "\033[39m");
2682 else if (tc->fg != 7)
2683 tty_putcode_i(tty, TTYC_SETAF, 7);
2684 tc->fg = gc->fg;
2685 }
2686 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2687 if (have_ax)
2688 tty_puts(tty, "\033[49m");
2689 else if (tc->bg != 0)
2690 tty_putcode_i(tty, TTYC_SETAB, 0);
2691 tc->bg = gc->bg;
2692 }
2693 }
2694 }
2695
2696 /* Set the foreground colour. */
2697 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2698 tty_colours_fg(tty, gc);
2699
2700 /*
2701 * Set the background colour. This must come after the foreground as
2702 * tty_colour_fg() can call tty_reset().
2703 */
2704 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2705 tty_colours_bg(tty, gc);
2706
2707 /* Set the underscore colour. */
2708 if (gc->us != tc->us)
2709 tty_colours_us(tty, gc);
2710 }
2711
2712 static void
2713 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2714 struct grid_cell *gc)
2715 {
2716 u_char r, g, b;
2717 u_int colours;
2718 int c;
2719
2720 /*
2721 * Perform substitution if this pane has a palette. If the bright
2722 * attribute is set and Nobr is not present, use the bright entry in
2723 * the palette by changing to the aixterm colour
2724 */
2725 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2726 c = gc->fg;
2727 if (c < 8 &&
2728 gc->attr & GRID_ATTR_BRIGHT &&
2729 !tty_term_has(tty->term, TTYC_NOBR))
2730 c += 90;
2731 if ((c = colour_palette_get(palette, c)) != -1)
2732 gc->fg = c;
2733 }
2734
2735 /* Is this a 24-bit colour? */
2736 if (gc->fg & COLOUR_FLAG_RGB) {
2737 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2738 if (tty->term->flags & TERM_RGBCOLOURS)
2739 return;
2740 colour_split_rgb(gc->fg, &r, &g, &b);
2741 gc->fg = colour_find_rgb(r, g, b);
2742 }
2743
2744 /* How many colours does this terminal have? */
2745 if (tty->term->flags & TERM_256COLOURS)
2746 colours = 256;
2747 else
2748 colours = tty_term_number(tty->term, TTYC_COLORS);
2749
2750 /* Is this a 256-colour colour? */
2751 if (gc->fg & COLOUR_FLAG_256) {
2752 /* And not a 256 colour mode? */
2753 if (colours < 256) {
2754 gc->fg = colour_256to16(gc->fg);
2755 if (gc->fg & 8) {
2756 gc->fg &= 7;
2757 if (colours >= 16)
2758 gc->fg += 90;
2759 }
2760 }
2761 return;
2762 }
2763
2764 /* Is this an aixterm colour? */
2765 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2766 gc->fg -= 90;
2767 gc->attr |= GRID_ATTR_BRIGHT;
2768 }
2769 }
2770
2771 static void
2772 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2773 struct grid_cell *gc)
2774 {
2775 u_char r, g, b;
2776 u_int colours;
2777 int c;
2778
2779 /* Perform substitution if this pane has a palette. */
2780 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2781 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2782 gc->bg = c;
2783 }
2784
2785 /* Is this a 24-bit colour? */
2786 if (gc->bg & COLOUR_FLAG_RGB) {
2787 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2788 if (tty->term->flags & TERM_RGBCOLOURS)
2789 return;
2790 colour_split_rgb(gc->bg, &r, &g, &b);
2791 gc->bg = colour_find_rgb(r, g, b);
2792 }
2793
2794 /* How many colours does this terminal have? */
2795 if (tty->term->flags & TERM_256COLOURS)
2796 colours = 256;
2797 else
2798 colours = tty_term_number(tty->term, TTYC_COLORS);
2799
2800 /* Is this a 256-colour colour? */
2801 if (gc->bg & COLOUR_FLAG_256) {
2802 /*
2803 * And not a 256 colour mode? Translate to 16-colour
2804 * palette. Bold background doesn't exist portably, so just
2805 * discard the bold bit if set.
2806 */
2807 if (colours < 256) {
2808 gc->bg = colour_256to16(gc->bg);
2809 if (gc->bg & 8) {
2810 gc->bg &= 7;
2811 if (colours >= 16)
2812 gc->bg += 90;
2813 }
2814 }
2815 return;
2816 }
2817
2818 /* Is this an aixterm colour? */
2819 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2820 gc->bg -= 90;
2821 }
2822
2823 static void
2824 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2825 struct grid_cell *gc)
2826 {
2827 int c;
2828
2829 /* Perform substitution if this pane has a palette. */
2830 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2831 if ((c = colour_palette_get(palette, gc->us)) != -1)
2832 gc->us = c;
2833 }
2834
2835 /* Convert underscore colour if only RGB can be supported. */
2836 if (!tty_term_has(tty->term, TTYC_SETULC1)) {
2837 if ((c = colour_force_rgb (gc->us)) == -1)
2838 gc->us = 8;
2839 else
2840 gc->us = c;
2841 }
2842 }
2843
2844 static void
2845 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2846 {
2847 struct grid_cell *tc = &tty->cell;
2848 char s[32];
2849
2850 /* Is this a 24-bit or 256-colour colour? */
2851 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2852 if (tty_try_colour(tty, gc->fg, "38") == 0)
2853 goto save;
2854 /* Should not get here, already converted in tty_check_fg. */
2855 return;
2856 }
2857
2858 /* Is this an aixterm bright colour? */
2859 if (gc->fg >= 90 && gc->fg <= 97) {
2860 if (tty->term->flags & TERM_256COLOURS) {
2861 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2862 tty_puts(tty, s);
2863 } else
2864 tty_putcode_i(tty, TTYC_SETAF, gc->fg - 90 + 8);
2865 goto save;
2866 }
2867
2868 /* Otherwise set the foreground colour. */
2869 tty_putcode_i(tty, TTYC_SETAF, gc->fg);
2870
2871 save:
2872 /* Save the new values in the terminal current cell. */
2873 tc->fg = gc->fg;
2874 }
2875
2876 static void
2877 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2878 {
2879 struct grid_cell *tc = &tty->cell;
2880 char s[32];
2881
2882 /* Is this a 24-bit or 256-colour colour? */
2883 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2884 if (tty_try_colour(tty, gc->bg, "48") == 0)
2885 goto save;
2886 /* Should not get here, already converted in tty_check_bg. */
2887 return;
2888 }
2889
2890 /* Is this an aixterm bright colour? */
2891 if (gc->bg >= 90 && gc->bg <= 97) {
2892 if (tty->term->flags & TERM_256COLOURS) {
2893 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2894 tty_puts(tty, s);
2895 } else
2896 tty_putcode_i(tty, TTYC_SETAB, gc->bg - 90 + 8);
2897 goto save;
2898 }
2899
2900 /* Otherwise set the background colour. */
2901 tty_putcode_i(tty, TTYC_SETAB, gc->bg);
2902
2903 save:
2904 /* Save the new values in the terminal current cell. */
2905 tc->bg = gc->bg;
2906 }
2907
2908 static void
2909 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2910 {
2911 struct grid_cell *tc = &tty->cell;
2912 u_int c;
2913 u_char r, g, b;
2914
2915 /* Clear underline colour. */
2916 if (COLOUR_DEFAULT(gc->us)) {
2917 tty_putcode(tty, TTYC_OL);
2918 goto save;
2919 }
2920
2921 /*
2922 * If this is not an RGB colour, use Setulc1 if it exists, otherwise
2923 * convert.
2924 */
2925 if (~gc->us & COLOUR_FLAG_RGB) {
2926 c = gc->us;
2927 if ((~c & COLOUR_FLAG_256) && (c >= 90 && c <= 97))
2928 c -= 82;
2929 tty_putcode_i(tty, TTYC_SETULC1, c & ~COLOUR_FLAG_256);
2930 return;
2931 }
2932
2933 /*
2934 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2935 * capability format. Calculate the colour value.
2936 */
2937 colour_split_rgb(gc->us, &r, &g, &b);
2938 c = (65536 * r) + (256 * g) + b;
2939
2940 /*
2941 * Write the colour. Only use setal if the RGB flag is set because the
2942 * non-RGB version may be wrong.
2943 */
2944 if (tty_term_has(tty->term, TTYC_SETULC))
2945 tty_putcode_i(tty, TTYC_SETULC, c);
2946 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2947 tty_term_has(tty->term, TTYC_RGB))
2948 tty_putcode_i(tty, TTYC_SETAL, c);
2949
2950 save:
2951 /* Save the new values in the terminal current cell. */
2952 tc->us = gc->us;
2953 }
2954
2955 static int
2956 tty_try_colour(struct tty *tty, int colour, const char *type)
2957 {
2958 u_char r, g, b;
2959
2960 if (colour & COLOUR_FLAG_256) {
2961 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2962 tty_putcode_i(tty, TTYC_SETAF, colour & 0xff);
2963 else if (tty_term_has(tty->term, TTYC_SETAB))
2964 tty_putcode_i(tty, TTYC_SETAB, colour & 0xff);
2965 return (0);
2966 }
2967
2968 if (colour & COLOUR_FLAG_RGB) {
2969 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2970 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2971 tty_putcode_iii(tty, TTYC_SETRGBF, r, g, b);
2972 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2973 tty_putcode_iii(tty, TTYC_SETRGBB, r, g, b);
2974 return (0);
2975 }
2976
2977 return (-1);
2978 }
2979
2980 static void
2981 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2982 {
2983 memcpy(gc, &grid_default_cell, sizeof *gc);
2984 gc->fg = wp->palette.fg;
2985 gc->bg = wp->palette.bg;
2986 }
2987
2988 void
2989 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2990 {
2991 struct options *oo = wp->options;
2992 struct format_tree *ft;
2993
2994 memcpy(gc, &grid_default_cell, sizeof *gc);
2995
2996 if (wp->flags & PANE_STYLECHANGED) {
2997 log_debug("%%%u: style changed", wp->id);
2998 wp->flags &= ~PANE_STYLECHANGED;
2999
3000 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
3001 FORMAT_NOJOBS);
3002 format_defaults(ft, NULL, NULL, NULL, wp);
3003 tty_window_default_style(&wp->cached_active_gc, wp);
3004 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
3005 tty_window_default_style(&wp->cached_gc, wp);
3006 style_add(&wp->cached_gc, oo, "window-style", ft);
3007 format_free(ft);
3008 }
3009
3010 if (gc->fg == 8) {
3011 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
3012 gc->fg = wp->cached_active_gc.fg;
3013 else
3014 gc->fg = wp->cached_gc.fg;
3015 }
3016
3017 if (gc->bg == 8) {
3018 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
3019 gc->bg = wp->cached_active_gc.bg;
3020 else
3021 gc->bg = wp->cached_gc.bg;
3022 }
3023 }
3024
3025 static void
3026 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
3027 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
3028 {
3029 struct grid_cell gc;
3030
3031 memcpy(&gc, &grid_default_cell, sizeof gc);
3032 gc.bg = bg;
3033 tty_attributes(tty, &gc, defaults, palette, hl);
3034 }
3035
3036 static void
3037 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
3038 {
3039 struct tty *tty = data;
3040 struct client *c = tty->client;
3041
3042 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3043 free(c->clipboard_panes);
3044 c->clipboard_panes = NULL;
3045 c->clipboard_npanes = 0;
3046
3047 tty->flags &= ~TTY_OSC52QUERY;
3048 }
3049
3050 void
3051 tty_clipboard_query(struct tty *tty)
3052 {
3053 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3054
3055 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3056 return;
3057 tty_putcode_ss(tty, TTYC_MS, "", "?");
3058
3059 tty->flags |= TTY_OSC52QUERY;
3060 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3061 evtimer_add(&tty->clipboard_timer, &tv);
3062 }
tmux -- terminal multiplexer similar to GNU Screen