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Accept \007 as terminator to OSC 10 or 11.
[tmux-openbsd.git] / tty.c
blobd31a2cab83021ebba4400852d94e2de7473b6f83
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 int tty_client_ready(struct client *);
38
39 static void tty_set_italics(struct tty *);
40 static int tty_try_colour(struct tty *, int, const char *);
41 static void tty_force_cursor_colour(struct tty *, int);
42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
43 u_int);
44 static void tty_cursor_pane_unless_wrap(struct tty *,
45 const struct tty_ctx *, u_int, u_int);
46 static void tty_invalidate(struct tty *);
47 static void tty_colours(struct tty *, const struct grid_cell *);
48 static void tty_check_fg(struct tty *, struct colour_palette *,
49 struct grid_cell *);
50 static void tty_check_bg(struct tty *, struct colour_palette *,
51 struct grid_cell *);
52 static void tty_check_us(struct tty *, struct colour_palette *,
53 struct grid_cell *);
54 static void tty_colours_fg(struct tty *, const struct grid_cell *);
55 static void tty_colours_bg(struct tty *, const struct grid_cell *);
56 static void tty_colours_us(struct tty *, const struct grid_cell *);
57
58 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
59 u_int);
60 static void tty_region(struct tty *, u_int, u_int);
61 static void tty_margin_pane(struct tty *, const struct tty_ctx *);
62 static void tty_margin(struct tty *, u_int, u_int);
63 static int tty_large_region(struct tty *, const struct tty_ctx *);
64 static int tty_fake_bce(const struct tty *, const struct grid_cell *,
65 u_int);
66 static void tty_redraw_region(struct tty *, const struct tty_ctx *);
67 static void tty_emulate_repeat(struct tty *, enum tty_code_code,
68 enum tty_code_code, u_int);
69 static void tty_repeat_space(struct tty *, u_int);
70 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
71 static void tty_default_attributes(struct tty *, const struct grid_cell *,
72 struct colour_palette *, u_int, struct hyperlinks *);
73 static int tty_check_overlay(struct tty *, u_int, u_int);
74 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
75 struct overlay_ranges *);
76
77 #define tty_use_margin(tty) \
78 (tty->term->flags & TERM_DECSLRM)
79 #define tty_full_width(tty, ctx) \
80 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
81
82 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
83 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
84 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
85
86 #define TTY_QUERY_TIMEOUT 5
87
88 void
89 tty_create_log(void)
90 {
91 char name[64];
92
93 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
94
95 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
96 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
97 fatal("fcntl failed");
98 }
99
100 int
101 tty_init(struct tty *tty, struct client *c)
102 {
103 if (!isatty(c->fd))
104 return (-1);
105
106 memset(tty, 0, sizeof *tty);
107 tty->client = c;
108
109 tty->cstyle = SCREEN_CURSOR_DEFAULT;
110 tty->ccolour = -1;
111 tty->fg = tty->bg = -1;
112
113 if (tcgetattr(c->fd, &tty->tio) != 0)
114 return (-1);
115 return (0);
116 }
117
118 void
119 tty_resize(struct tty *tty)
120 {
121 struct client *c = tty->client;
122 struct winsize ws;
123 u_int sx, sy, xpixel, ypixel;
124
125 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
126 sx = ws.ws_col;
127 if (sx == 0) {
128 sx = 80;
129 xpixel = 0;
130 } else
131 xpixel = ws.ws_xpixel / sx;
132 sy = ws.ws_row;
133 if (sy == 0) {
134 sy = 24;
135 ypixel = 0;
136 } else
137 ypixel = ws.ws_ypixel / sy;
138 } else {
139 sx = 80;
140 sy = 24;
141 xpixel = 0;
142 ypixel = 0;
143 }
144 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
145 xpixel, ypixel);
146 tty_set_size(tty, sx, sy, xpixel, ypixel);
147 tty_invalidate(tty);
148 }
149
150 void
151 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
152 {
153 tty->sx = sx;
154 tty->sy = sy;
155 tty->xpixel = xpixel;
156 tty->ypixel = ypixel;
157 }
158
159 static void
160 tty_read_callback(__unused int fd, __unused short events, void *data)
161 {
162 struct tty *tty = data;
163 struct client *c = tty->client;
164 const char *name = c->name;
165 size_t size = EVBUFFER_LENGTH(tty->in);
166 int nread;
167
168 nread = evbuffer_read(tty->in, c->fd, -1);
169 if (nread == 0 || nread == -1) {
170 if (nread == 0)
171 log_debug("%s: read closed", name);
172 else
173 log_debug("%s: read error: %s", name, strerror(errno));
174 event_del(&tty->event_in);
175 server_client_lost(tty->client);
176 return;
177 }
178 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
179
180 while (tty_keys_next(tty))
181 ;
182 }
183
184 static void
185 tty_timer_callback(__unused int fd, __unused short events, void *data)
186 {
187 struct tty *tty = data;
188 struct client *c = tty->client;
189 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
190
191 log_debug("%s: %zu discarded", c->name, tty->discarded);
192
193 c->flags |= CLIENT_ALLREDRAWFLAGS;
194 c->discarded += tty->discarded;
195
196 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
197 tty->flags &= ~TTY_BLOCK;
198 tty_invalidate(tty);
199 return;
200 }
201 tty->discarded = 0;
202 evtimer_add(&tty->timer, &tv);
203 }
204
205 static int
206 tty_block_maybe(struct tty *tty)
207 {
208 struct client *c = tty->client;
209 size_t size = EVBUFFER_LENGTH(tty->out);
210 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
211
212 if (size == 0)
213 tty->flags &= ~TTY_NOBLOCK;
214 else if (tty->flags & TTY_NOBLOCK)
215 return (0);
216
217 if (size < TTY_BLOCK_START(tty))
218 return (0);
219
220 if (tty->flags & TTY_BLOCK)
221 return (1);
222 tty->flags |= TTY_BLOCK;
223
224 log_debug("%s: can't keep up, %zu discarded", c->name, size);
225
226 evbuffer_drain(tty->out, size);
227 c->discarded += size;
228
229 tty->discarded = 0;
230 evtimer_add(&tty->timer, &tv);
231 return (1);
232 }
233
234 static void
235 tty_write_callback(__unused int fd, __unused short events, void *data)
236 {
237 struct tty *tty = data;
238 struct client *c = tty->client;
239 size_t size = EVBUFFER_LENGTH(tty->out);
240 int nwrite;
241
242 nwrite = evbuffer_write(tty->out, c->fd);
243 if (nwrite == -1)
244 return;
245 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
246
247 if (c->redraw > 0) {
248 if ((size_t)nwrite >= c->redraw)
249 c->redraw = 0;
250 else
251 c->redraw -= nwrite;
252 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
253 c->redraw);
254 } else if (tty_block_maybe(tty))
255 return;
256
257 if (EVBUFFER_LENGTH(tty->out) != 0)
258 event_add(&tty->event_out, NULL);
259 }
260
261 int
262 tty_open(struct tty *tty, char **cause)
263 {
264 struct client *c = tty->client;
265
266 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
267 c->term_ncaps, &c->term_features, cause);
268 if (tty->term == NULL) {
269 tty_close(tty);
270 return (-1);
271 }
272 tty->flags |= TTY_OPENED;
273
274 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
275
276 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
277 tty_read_callback, tty);
278 tty->in = evbuffer_new();
279 if (tty->in == NULL)
280 fatal("out of memory");
281
282 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
283 tty->out = evbuffer_new();
284 if (tty->out == NULL)
285 fatal("out of memory");
286
287 evtimer_set(&tty->timer, tty_timer_callback, tty);
288
289 tty_start_tty(tty);
290 tty_keys_build(tty);
291
292 return (0);
293 }
294
295 static void
296 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
297 {
298 struct tty *tty = data;
299 struct client *c = tty->client;
300
301 log_debug("%s: start timer fired", c->name);
302 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
303 tty_update_features(tty);
304 tty->flags |= TTY_ALL_REQUEST_FLAGS;
305 }
306
307 void
308 tty_start_tty(struct tty *tty)
309 {
310 struct client *c = tty->client;
311 struct termios tio;
312 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
313
314 setblocking(c->fd, 0);
315 event_add(&tty->event_in, NULL);
316
317 memcpy(&tio, &tty->tio, sizeof tio);
318 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
319 tio.c_iflag |= IGNBRK;
320 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
321 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
322 ECHOKE|ISIG);
323 tio.c_cc[VMIN] = 1;
324 tio.c_cc[VTIME] = 0;
325 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
326 tcflush(c->fd, TCOFLUSH);
327
328 tty_putcode(tty, TTYC_SMCUP);
329
330 tty_putcode(tty, TTYC_SMKX);
331 tty_putcode(tty, TTYC_CLEAR);
332
333 if (tty_acs_needed(tty)) {
334 log_debug("%s: using capabilities for ACS", c->name);
335 tty_putcode(tty, TTYC_ENACS);
336 } else
337 log_debug("%s: using UTF-8 for ACS", c->name);
338
339 tty_putcode(tty, TTYC_CNORM);
340 if (tty_term_has(tty->term, TTYC_KMOUS)) {
341 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
342 tty_puts(tty, "\033[?1006l\033[?1005l");
343 }
344
345 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
346 evtimer_add(&tty->start_timer, &tv);
347
348 tty->flags |= TTY_STARTED;
349 tty_invalidate(tty);
350
351 if (tty->ccolour != -1)
352 tty_force_cursor_colour(tty, -1);
353
354 tty->mouse_drag_flag = 0;
355 tty->mouse_drag_update = NULL;
356 tty->mouse_drag_release = NULL;
357 }
358
359 void
360 tty_send_requests(struct tty *tty)
361 {
362 if (~tty->flags & TTY_STARTED)
363 return;
364
365 if (tty->term->flags & TERM_VT100LIKE) {
366 if (~tty->term->flags & TTY_HAVEDA)
367 tty_puts(tty, "\033[c");
368 if (~tty->flags & TTY_HAVEDA2)
369 tty_puts(tty, "\033[>c");
370 if (~tty->flags & TTY_HAVEXDA)
371 tty_puts(tty, "\033[>q");
372 if (~tty->flags & TTY_HAVEFG)
373 tty_puts(tty, "\033]10;?\033\\");
374 if (~tty->flags & TTY_HAVEBG)
375 tty_puts(tty, "\033]11;?\033\\");
376 } else
377 tty->flags |= TTY_ALL_REQUEST_FLAGS;
378 }
379
380 void
381 tty_stop_tty(struct tty *tty)
382 {
383 struct client *c = tty->client;
384 struct winsize ws;
385
386 if (!(tty->flags & TTY_STARTED))
387 return;
388 tty->flags &= ~TTY_STARTED;
389
390 evtimer_del(&tty->start_timer);
391
392 event_del(&tty->timer);
393 tty->flags &= ~TTY_BLOCK;
394
395 event_del(&tty->event_in);
396 event_del(&tty->event_out);
397
398 /*
399 * Be flexible about error handling and try not kill the server just
400 * because the fd is invalid. Things like ssh -t can easily leave us
401 * with a dead tty.
402 */
403 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
404 return;
405 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
406 return;
407
408 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
409 if (tty_acs_needed(tty))
410 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
411 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
412 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
413 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
414 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
415 if (tty_term_has(tty->term, TTYC_SE))
416 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
417 else if (tty_term_has(tty->term, TTYC_SS))
418 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
419 }
420 if (tty->mode & MODE_BRACKETPASTE)
421 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
422 if (tty->ccolour != -1)
423 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
424
425 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
426 if (tty_term_has(tty->term, TTYC_KMOUS)) {
427 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
428 tty_raw(tty, "\033[?1006l\033[?1005l");
429 }
430
431 if (tty->term->flags & TERM_VT100LIKE)
432 tty_raw(tty, "\033[?7727l");
433 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
434 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
435
436 if (tty_use_margin(tty))
437 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
438 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
439
440 setblocking(c->fd, 1);
441 }
442
443 void
444 tty_close(struct tty *tty)
445 {
446 if (event_initialized(&tty->key_timer))
447 evtimer_del(&tty->key_timer);
448 tty_stop_tty(tty);
449
450 if (tty->flags & TTY_OPENED) {
451 evbuffer_free(tty->in);
452 event_del(&tty->event_in);
453 evbuffer_free(tty->out);
454 event_del(&tty->event_out);
455
456 tty_term_free(tty->term);
457 tty_keys_free(tty);
458
459 tty->flags &= ~TTY_OPENED;
460 }
461 }
462
463 void
464 tty_free(struct tty *tty)
465 {
466 tty_close(tty);
467 }
468
469 void
470 tty_update_features(struct tty *tty)
471 {
472 struct client *c = tty->client;
473
474 if (tty_apply_features(tty->term, c->term_features))
475 tty_term_apply_overrides(tty->term);
476
477 if (tty_use_margin(tty))
478 tty_putcode(tty, TTYC_ENMG);
479 if (options_get_number(global_options, "extended-keys"))
480 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
481 if (options_get_number(global_options, "focus-events"))
482 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
483 if (tty->term->flags & TERM_VT100LIKE)
484 tty_puts(tty, "\033[?7727h");
485 }
486
487 void
488 tty_raw(struct tty *tty, const char *s)
489 {
490 struct client *c = tty->client;
491 ssize_t n, slen;
492 u_int i;
493
494 slen = strlen(s);
495 for (i = 0; i < 5; i++) {
496 n = write(c->fd, s, slen);
497 if (n >= 0) {
498 s += n;
499 slen -= n;
500 if (slen == 0)
501 break;
502 } else if (n == -1 && errno != EAGAIN)
503 break;
504 usleep(100);
505 }
506 }
507
508 void
509 tty_putcode(struct tty *tty, enum tty_code_code code)
510 {
511 tty_puts(tty, tty_term_string(tty->term, code));
512 }
513
514 void
515 tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
516 {
517 if (a < 0)
518 return;
519 tty_puts(tty, tty_term_string1(tty->term, code, a));
520 }
521
522 void
523 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
524 {
525 if (a < 0 || b < 0)
526 return;
527 tty_puts(tty, tty_term_string2(tty->term, code, a, b));
528 }
529
530 void
531 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
532 {
533 if (a < 0 || b < 0 || c < 0)
534 return;
535 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
536 }
537
538 void
539 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
540 {
541 if (a != NULL)
542 tty_puts(tty, tty_term_ptr1(tty->term, code, a));
543 }
544
545 void
546 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
547 const void *b)
548 {
549 if (a != NULL && b != NULL)
550 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
551 }
552
553 static void
554 tty_add(struct tty *tty, const char *buf, size_t len)
555 {
556 struct client *c = tty->client;
557
558 if (tty->flags & TTY_BLOCK) {
559 tty->discarded += len;
560 return;
561 }
562
563 evbuffer_add(tty->out, buf, len);
564 log_debug("%s: %.*s", c->name, (int)len, buf);
565 c->written += len;
566
567 if (tty_log_fd != -1)
568 write(tty_log_fd, buf, len);
569 if (tty->flags & TTY_STARTED)
570 event_add(&tty->event_out, NULL);
571 }
572
573 void
574 tty_puts(struct tty *tty, const char *s)
575 {
576 if (*s != '\0')
577 tty_add(tty, s, strlen(s));
578 }
579
580 void
581 tty_putc(struct tty *tty, u_char ch)
582 {
583 const char *acs;
584
585 if ((tty->term->flags & TERM_NOAM) &&
586 ch >= 0x20 && ch != 0x7f &&
587 tty->cy == tty->sy - 1 &&
588 tty->cx + 1 >= tty->sx)
589 return;
590
591 if (tty->cell.attr & GRID_ATTR_CHARSET) {
592 acs = tty_acs_get(tty, ch);
593 if (acs != NULL)
594 tty_add(tty, acs, strlen(acs));
595 else
596 tty_add(tty, &ch, 1);
597 } else
598 tty_add(tty, &ch, 1);
599
600 if (ch >= 0x20 && ch != 0x7f) {
601 if (tty->cx >= tty->sx) {
602 tty->cx = 1;
603 if (tty->cy != tty->rlower)
604 tty->cy++;
605
606 /*
607 * On !am terminals, force the cursor position to where
608 * we think it should be after a line wrap - this means
609 * it works on sensible terminals as well.
610 */
611 if (tty->term->flags & TERM_NOAM)
612 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
613 } else
614 tty->cx++;
615 }
616 }
617
618 void
619 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
620 {
621 if ((tty->term->flags & TERM_NOAM) &&
622 tty->cy == tty->sy - 1 &&
623 tty->cx + len >= tty->sx)
624 len = tty->sx - tty->cx - 1;
625
626 tty_add(tty, buf, len);
627 if (tty->cx + width > tty->sx) {
628 tty->cx = (tty->cx + width) - tty->sx;
629 if (tty->cx <= tty->sx)
630 tty->cy++;
631 else
632 tty->cx = tty->cy = UINT_MAX;
633 } else
634 tty->cx += width;
635 }
636
637 static void
638 tty_set_italics(struct tty *tty)
639 {
640 const char *s;
641
642 if (tty_term_has(tty->term, TTYC_SITM)) {
643 s = options_get_string(global_options, "default-terminal");
644 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
645 tty_putcode(tty, TTYC_SITM);
646 return;
647 }
648 }
649 tty_putcode(tty, TTYC_SMSO);
650 }
651
652 void
653 tty_set_title(struct tty *tty, const char *title)
654 {
655 if (!tty_term_has(tty->term, TTYC_TSL) ||
656 !tty_term_has(tty->term, TTYC_FSL))
657 return;
658
659 tty_putcode(tty, TTYC_TSL);
660 tty_puts(tty, title);
661 tty_putcode(tty, TTYC_FSL);
662 }
663
664 void
665 tty_set_path(struct tty *tty, const char *title)
666 {
667 if (!tty_term_has(tty->term, TTYC_SWD) ||
668 !tty_term_has(tty->term, TTYC_FSL))
669 return;
670
671 tty_putcode(tty, TTYC_SWD);
672 tty_puts(tty, title);
673 tty_putcode(tty, TTYC_FSL);
674 }
675
676 static void
677 tty_force_cursor_colour(struct tty *tty, int c)
678 {
679 u_char r, g, b;
680 char s[13];
681
682 if (c != -1)
683 c = colour_force_rgb(c);
684 if (c == tty->ccolour)
685 return;
686 if (c == -1)
687 tty_putcode(tty, TTYC_CR);
688 else {
689 colour_split_rgb(c, &r, &g, &b);
690 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
691 tty_putcode_ptr1(tty, TTYC_CS, s);
692 }
693 tty->ccolour = c;
694 }
695
696 static int
697 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
698 {
699 enum screen_cursor_style cstyle;
700 int ccolour, changed, cmode = mode;
701
702 /* Set cursor colour if changed. */
703 if (s != NULL) {
704 ccolour = s->ccolour;
705 if (s->ccolour == -1)
706 ccolour = s->default_ccolour;
707 tty_force_cursor_colour(tty, ccolour);
708 }
709
710 /* If cursor is off, set as invisible. */
711 if (~cmode & MODE_CURSOR) {
712 if (tty->mode & MODE_CURSOR)
713 tty_putcode(tty, TTYC_CIVIS);
714 return (cmode);
715 }
716
717 /* Check if blinking or very visible flag changed or style changed. */
718 if (s == NULL)
719 cstyle = tty->cstyle;
720 else {
721 cstyle = s->cstyle;
722 if (cstyle == SCREEN_CURSOR_DEFAULT) {
723 if (~cmode & MODE_CURSOR_BLINKING_SET) {
724 if (s->default_mode & MODE_CURSOR_BLINKING)
725 cmode |= MODE_CURSOR_BLINKING;
726 else
727 cmode &= ~MODE_CURSOR_BLINKING;
728 }
729 cstyle = s->default_cstyle;
730 }
731 }
732
733 /* If nothing changed, do nothing. */
734 changed = cmode ^ tty->mode;
735 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
736 return (cmode);
737
738 /*
739 * Set cursor style. If an explicit style has been set with DECSCUSR,
740 * set it if supported, otherwise send cvvis for blinking styles.
741 *
742 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
743 * if either the blinking or very visible flags are set.
744 */
745 tty_putcode(tty, TTYC_CNORM);
746 switch (cstyle) {
747 case SCREEN_CURSOR_DEFAULT:
748 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
749 if (tty_term_has(tty->term, TTYC_SE))
750 tty_putcode(tty, TTYC_SE);
751 else
752 tty_putcode1(tty, TTYC_SS, 0);
753 }
754 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
755 tty_putcode(tty, TTYC_CVVIS);
756 break;
757 case SCREEN_CURSOR_BLOCK:
758 if (tty_term_has(tty->term, TTYC_SS)) {
759 if (cmode & MODE_CURSOR_BLINKING)
760 tty_putcode1(tty, TTYC_SS, 1);
761 else
762 tty_putcode1(tty, TTYC_SS, 2);
763 } else if (cmode & MODE_CURSOR_BLINKING)
764 tty_putcode(tty, TTYC_CVVIS);
765 break;
766 case SCREEN_CURSOR_UNDERLINE:
767 if (tty_term_has(tty->term, TTYC_SS)) {
768 if (cmode & MODE_CURSOR_BLINKING)
769 tty_putcode1(tty, TTYC_SS, 3);
770 else
771 tty_putcode1(tty, TTYC_SS, 4);
772 } else if (cmode & MODE_CURSOR_BLINKING)
773 tty_putcode(tty, TTYC_CVVIS);
774 break;
775 case SCREEN_CURSOR_BAR:
776 if (tty_term_has(tty->term, TTYC_SS)) {
777 if (cmode & MODE_CURSOR_BLINKING)
778 tty_putcode1(tty, TTYC_SS, 5);
779 else
780 tty_putcode1(tty, TTYC_SS, 6);
781 } else if (cmode & MODE_CURSOR_BLINKING)
782 tty_putcode(tty, TTYC_CVVIS);
783 break;
784 }
785 tty->cstyle = cstyle;
786 return (cmode);
787 }
788
789 void
790 tty_update_mode(struct tty *tty, int mode, struct screen *s)
791 {
792 struct tty_term *term = tty->term;
793 struct client *c = tty->client;
794 int changed;
795
796 if (tty->flags & TTY_NOCURSOR)
797 mode &= ~MODE_CURSOR;
798
799 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
800 mode |= MODE_CURSOR_BLINKING;
801 else
802 mode &= ~MODE_CURSOR_BLINKING;
803
804 changed = mode ^ tty->mode;
805 if (log_get_level() != 0 && changed != 0) {
806 log_debug("%s: current mode %s", c->name,
807 screen_mode_to_string(tty->mode));
808 log_debug("%s: setting mode %s", c->name,
809 screen_mode_to_string(mode));
810 }
811
812 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
813 /*
814 * If the mouse modes have changed, clear then all and apply
815 * again. There are differences in how terminals track the
816 * various bits.
817 */
818 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
819 if (mode & ALL_MOUSE_MODES)
820 tty_puts(tty, "\033[?1006h");
821 if (mode & MODE_MOUSE_ALL)
822 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
823 else if (mode & MODE_MOUSE_BUTTON)
824 tty_puts(tty, "\033[?1000h\033[?1002h");
825 else if (mode & MODE_MOUSE_STANDARD)
826 tty_puts(tty, "\033[?1000h");
827 }
828 if (changed & MODE_BRACKETPASTE) {
829 if (mode & MODE_BRACKETPASTE)
830 tty_putcode(tty, TTYC_ENBP);
831 else
832 tty_putcode(tty, TTYC_DSBP);
833 }
834 tty->mode = mode;
835 }
836
837 static void
838 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
839 enum tty_code_code code1, u_int n)
840 {
841 if (tty_term_has(tty->term, code))
842 tty_putcode1(tty, code, n);
843 else {
844 while (n-- > 0)
845 tty_putcode(tty, code1);
846 }
847 }
848
849 static void
850 tty_repeat_space(struct tty *tty, u_int n)
851 {
852 static char s[500];
853
854 if (*s != ' ')
855 memset(s, ' ', sizeof s);
856
857 while (n > sizeof s) {
858 tty_putn(tty, s, sizeof s, sizeof s);
859 n -= sizeof s;
860 }
861 if (n != 0)
862 tty_putn(tty, s, n, n);
863 }
864
865 /* Is this window bigger than the terminal? */
866 int
867 tty_window_bigger(struct tty *tty)
868 {
869 struct client *c = tty->client;
870 struct window *w = c->session->curw->window;
871
872 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
873 }
874
875 /* What offset should this window be drawn at? */
876 int
877 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
878 {
879 *ox = tty->oox;
880 *oy = tty->ooy;
881 *sx = tty->osx;
882 *sy = tty->osy;
883
884 return (tty->oflag);
885 }
886
887 /* What offset should this window be drawn at? */
888 static int
889 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
890 {
891 struct client *c = tty->client;
892 struct window *w = c->session->curw->window;
893 struct window_pane *wp = server_client_get_pane(c);
894 u_int cx, cy, lines;
895
896 lines = status_line_size(c);
897
898 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
899 *ox = 0;
900 *oy = 0;
901 *sx = w->sx;
902 *sy = w->sy;
903
904 c->pan_window = NULL;
905 return (0);
906 }
907
908 *sx = tty->sx;
909 *sy = tty->sy - lines;
910
911 if (c->pan_window == w) {
912 if (*sx >= w->sx)
913 c->pan_ox = 0;
914 else if (c->pan_ox + *sx > w->sx)
915 c->pan_ox = w->sx - *sx;
916 *ox = c->pan_ox;
917 if (*sy >= w->sy)
918 c->pan_oy = 0;
919 else if (c->pan_oy + *sy > w->sy)
920 c->pan_oy = w->sy - *sy;
921 *oy = c->pan_oy;
922 return (1);
923 }
924
925 if (~wp->screen->mode & MODE_CURSOR) {
926 *ox = 0;
927 *oy = 0;
928 } else {
929 cx = wp->xoff + wp->screen->cx;
930 cy = wp->yoff + wp->screen->cy;
931
932 if (cx < *sx)
933 *ox = 0;
934 else if (cx > w->sx - *sx)
935 *ox = w->sx - *sx;
936 else
937 *ox = cx - *sx / 2;
938
939 if (cy < *sy)
940 *oy = 0;
941 else if (cy > w->sy - *sy)
942 *oy = w->sy - *sy;
943 else
944 *oy = cy - *sy / 2;
945 }
946
947 c->pan_window = NULL;
948 return (1);
949 }
950
951 /* Update stored offsets for a window and redraw if necessary. */
952 void
953 tty_update_window_offset(struct window *w)
954 {
955 struct client *c;
956
957 TAILQ_FOREACH(c, &clients, entry) {
958 if (c->session != NULL &&
959 c->session->curw != NULL &&
960 c->session->curw->window == w)
961 tty_update_client_offset(c);
962 }
963 }
964
965 /* Update stored offsets for a client and redraw if necessary. */
966 void
967 tty_update_client_offset(struct client *c)
968 {
969 u_int ox, oy, sx, sy;
970
971 if (~c->flags & CLIENT_TERMINAL)
972 return;
973
974 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
975 if (ox == c->tty.oox &&
976 oy == c->tty.ooy &&
977 sx == c->tty.osx &&
978 sy == c->tty.osy)
979 return;
980
981 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
982 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
983 ox, oy, sx, sy);
984
985 c->tty.oox = ox;
986 c->tty.ooy = oy;
987 c->tty.osx = sx;
988 c->tty.osy = sy;
989
990 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
991 }
992
993 /*
994 * Is the region large enough to be worth redrawing once later rather than
995 * probably several times now? Currently yes if it is more than 50% of the
996 * pane.
997 */
998 static int
999 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1000 {
1001 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
1002 }
1003
1004 /*
1005 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1006 * emulated.
1007 */
1008 static int
1009 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1010 {
1011 if (tty_term_flag(tty->term, TTYC_BCE))
1012 return (0);
1013 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1014 return (1);
1015 return (0);
1016 }
1017
1018 /*
1019 * Redraw scroll region using data from screen (already updated). Used when
1020 * CSR not supported, or window is a pane that doesn't take up the full
1021 * width of the terminal.
1022 */
1023 static void
1024 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1025 {
1026 struct client *c = tty->client;
1027 u_int i;
1028
1029 /*
1030 * If region is large, schedule a redraw. In most cases this is likely
1031 * to be followed by some more scrolling.
1032 */
1033 if (tty_large_region(tty, ctx)) {
1034 log_debug("%s: %s large redraw", __func__, c->name);
1035 ctx->redraw_cb(ctx);
1036 return;
1037 }
1038
1039 for (i = ctx->orupper; i <= ctx->orlower; i++)
1040 tty_draw_pane(tty, ctx, i);
1041 }
1042
1043 /* Is this position visible in the pane? */
1044 static int
1045 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1046 u_int py, u_int nx, u_int ny)
1047 {
1048 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1049
1050 if (!ctx->bigger)
1051 return (1);
1052
1053 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1054 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1055 return (0);
1056 return (1);
1057 }
1058
1059 /* Clamp line position to visible part of pane. */
1060 static int
1061 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1062 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1063 {
1064 u_int xoff = ctx->rxoff + px;
1065
1066 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1067 return (0);
1068 *ry = ctx->yoff + py - ctx->woy;
1069
1070 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1071 /* All visible. */
1072 *i = 0;
1073 *x = ctx->xoff + px - ctx->wox;
1074 *rx = nx;
1075 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1076 /* Both left and right not visible. */
1077 *i = ctx->wox;
1078 *x = 0;
1079 *rx = ctx->wsx;
1080 } else if (xoff < ctx->wox) {
1081 /* Left not visible. */
1082 *i = ctx->wox - (ctx->xoff + px);
1083 *x = 0;
1084 *rx = nx - *i;
1085 } else {
1086 /* Right not visible. */
1087 *i = 0;
1088 *x = (ctx->xoff + px) - ctx->wox;
1089 *rx = ctx->wsx - *x;
1090 }
1091 if (*rx > nx)
1092 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1093
1094 return (1);
1095 }
1096
1097 /* Clear a line. */
1098 static void
1099 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1100 u_int px, u_int nx, u_int bg)
1101 {
1102 struct client *c = tty->client;
1103 struct overlay_ranges r;
1104 u_int i;
1105
1106 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1107
1108 /* Nothing to clear. */
1109 if (nx == 0)
1110 return;
1111
1112 /* If genuine BCE is available, can try escape sequences. */
1113 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1114 /* Off the end of the line, use EL if available. */
1115 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1116 tty_cursor(tty, px, py);
1117 tty_putcode(tty, TTYC_EL);
1118 return;
1119 }
1120
1121 /* At the start of the line. Use EL1. */
1122 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1123 tty_cursor(tty, px + nx - 1, py);
1124 tty_putcode(tty, TTYC_EL1);
1125 return;
1126 }
1127
1128 /* Section of line. Use ECH if possible. */
1129 if (tty_term_has(tty->term, TTYC_ECH)) {
1130 tty_cursor(tty, px, py);
1131 tty_putcode1(tty, TTYC_ECH, nx);
1132 return;
1133 }
1134 }
1135
1136 /*
1137 * Couldn't use an escape sequence, use spaces. Clear only the visible
1138 * bit if there is an overlay.
1139 */
1140 tty_check_overlay_range(tty, px, py, nx, &r);
1141 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1142 if (r.nx[i] == 0)
1143 continue;
1144 tty_cursor(tty, r.px[i], py);
1145 tty_repeat_space(tty, r.nx[i]);
1146 }
1147 }
1148
1149 /* Clear a line, adjusting to visible part of pane. */
1150 static void
1151 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1152 u_int px, u_int nx, u_int bg)
1153 {
1154 struct client *c = tty->client;
1155 u_int i, x, rx, ry;
1156
1157 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1158
1159 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1160 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1161 }
1162
1163 /* Clamp area position to visible part of pane. */
1164 static int
1165 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1166 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1167 u_int *ry)
1168 {
1169 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1170
1171 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1172 return (0);
1173
1174 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1175 /* All visible. */
1176 *i = 0;
1177 *x = ctx->xoff + px - ctx->wox;
1178 *rx = nx;
1179 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1180 /* Both left and right not visible. */
1181 *i = ctx->wox;
1182 *x = 0;
1183 *rx = ctx->wsx;
1184 } else if (xoff < ctx->wox) {
1185 /* Left not visible. */
1186 *i = ctx->wox - (ctx->xoff + px);
1187 *x = 0;
1188 *rx = nx - *i;
1189 } else {
1190 /* Right not visible. */
1191 *i = 0;
1192 *x = (ctx->xoff + px) - ctx->wox;
1193 *rx = ctx->wsx - *x;
1194 }
1195 if (*rx > nx)
1196 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1197
1198 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1199 /* All visible. */
1200 *j = 0;
1201 *y = ctx->yoff + py - ctx->woy;
1202 *ry = ny;
1203 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1204 /* Both top and bottom not visible. */
1205 *j = ctx->woy;
1206 *y = 0;
1207 *ry = ctx->wsy;
1208 } else if (yoff < ctx->woy) {
1209 /* Top not visible. */
1210 *j = ctx->woy - (ctx->yoff + py);
1211 *y = 0;
1212 *ry = ny - *j;
1213 } else {
1214 /* Bottom not visible. */
1215 *j = 0;
1216 *y = (ctx->yoff + py) - ctx->woy;
1217 *ry = ctx->wsy - *y;
1218 }
1219 if (*ry > ny)
1220 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1221
1222 return (1);
1223 }
1224
1225 /* Clear an area, adjusting to visible part of pane. */
1226 static void
1227 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1228 u_int ny, u_int px, u_int nx, u_int bg)
1229 {
1230 struct client *c = tty->client;
1231 u_int yy;
1232 char tmp[64];
1233
1234 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1235
1236 /* Nothing to clear. */
1237 if (nx == 0 || ny == 0)
1238 return;
1239
1240 /* If genuine BCE is available, can try escape sequences. */
1241 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1242 /* Use ED if clearing off the bottom of the terminal. */
1243 if (px == 0 &&
1244 px + nx >= tty->sx &&
1245 py + ny >= tty->sy &&
1246 tty_term_has(tty->term, TTYC_ED)) {
1247 tty_cursor(tty, 0, py);
1248 tty_putcode(tty, TTYC_ED);
1249 return;
1250 }
1251
1252 /*
1253 * On VT420 compatible terminals we can use DECFRA if the
1254 * background colour isn't default (because it doesn't work
1255 * after SGR 0).
1256 */
1257 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1258 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1259 py + 1, px + 1, py + ny, px + nx);
1260 tty_puts(tty, tmp);
1261 return;
1262 }
1263
1264 /* Full lines can be scrolled away to clear them. */
1265 if (px == 0 &&
1266 px + nx >= tty->sx &&
1267 ny > 2 &&
1268 tty_term_has(tty->term, TTYC_CSR) &&
1269 tty_term_has(tty->term, TTYC_INDN)) {
1270 tty_region(tty, py, py + ny - 1);
1271 tty_margin_off(tty);
1272 tty_putcode1(tty, TTYC_INDN, ny);
1273 return;
1274 }
1275
1276 /*
1277 * If margins are supported, can just scroll the area off to
1278 * clear it.
1279 */
1280 if (nx > 2 &&
1281 ny > 2 &&
1282 tty_term_has(tty->term, TTYC_CSR) &&
1283 tty_use_margin(tty) &&
1284 tty_term_has(tty->term, TTYC_INDN)) {
1285 tty_region(tty, py, py + ny - 1);
1286 tty_margin(tty, px, px + nx - 1);
1287 tty_putcode1(tty, TTYC_INDN, ny);
1288 return;
1289 }
1290 }
1291
1292 /* Couldn't use an escape sequence, loop over the lines. */
1293 for (yy = py; yy < py + ny; yy++)
1294 tty_clear_line(tty, defaults, yy, px, nx, bg);
1295 }
1296
1297 /* Clear an area in a pane. */
1298 static void
1299 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1300 u_int ny, u_int px, u_int nx, u_int bg)
1301 {
1302 u_int i, j, x, y, rx, ry;
1303
1304 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1305 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1306 }
1307
1308 static void
1309 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1310 {
1311 struct screen *s = ctx->s;
1312 u_int nx = ctx->sx, i, x, rx, ry;
1313
1314 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1315
1316 if (!ctx->bigger) {
1317 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1318 &ctx->defaults, ctx->palette);
1319 return;
1320 }
1321 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1322 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1323 ctx->palette);
1324 }
1325 }
1326
1327 static const struct grid_cell *
1328 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1329 {
1330 static struct grid_cell new;
1331 int c;
1332
1333 /* Characters less than 0x7f are always fine, no matter what. */
1334 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1335 return (gc);
1336
1337 /* UTF-8 terminal and a UTF-8 character - fine. */
1338 if (tty->client->flags & CLIENT_UTF8)
1339 return (gc);
1340 memcpy(&new, gc, sizeof new);
1341
1342 /* See if this can be mapped to an ACS character. */
1343 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1344 if (c != -1) {
1345 utf8_set(&new.data, c);
1346 new.attr |= GRID_ATTR_CHARSET;
1347 return (&new);
1348 }
1349
1350 /* Replace by the right number of underscores. */
1351 new.data.size = gc->data.width;
1352 if (new.data.size > UTF8_SIZE)
1353 new.data.size = UTF8_SIZE;
1354 memset(new.data.data, '_', new.data.size);
1355 return (&new);
1356 }
1357
1358 /*
1359 * Check if a single character is obstructed by the overlay and return a
1360 * boolean.
1361 */
1362 static int
1363 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1364 {
1365 struct overlay_ranges r;
1366
1367 /*
1368 * A unit width range will always return nx[2] == 0 from a check, even
1369 * with multiple overlays, so it's sufficient to check just the first
1370 * two entries.
1371 */
1372 tty_check_overlay_range(tty, px, py, 1, &r);
1373 if (r.nx[0] + r.nx[1] == 0)
1374 return (0);
1375 return (1);
1376 }
1377
1378 /* Return parts of the input range which are visible. */
1379 static void
1380 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1381 struct overlay_ranges *r)
1382 {
1383 struct client *c = tty->client;
1384
1385 if (c->overlay_check == NULL) {
1386 r->px[0] = px;
1387 r->nx[0] = nx;
1388 r->px[1] = 0;
1389 r->nx[1] = 0;
1390 r->px[2] = 0;
1391 r->nx[2] = 0;
1392 return;
1393 }
1394
1395 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1396 }
1397
1398 void
1399 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1400 u_int atx, u_int aty, const struct grid_cell *defaults,
1401 struct colour_palette *palette)
1402 {
1403 struct grid *gd = s->grid;
1404 struct grid_cell gc, last;
1405 const struct grid_cell *gcp;
1406 struct grid_line *gl;
1407 struct client *c = tty->client;
1408 struct overlay_ranges r;
1409 u_int i, j, ux, sx, width, hidden, eux, nxx;
1410 u_int cellsize;
1411 int flags, cleared = 0, wrapped = 0;
1412 char buf[512];
1413 size_t len;
1414
1415 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1416 px, py, nx, atx, aty);
1417 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1418 defaults->bg);
1419
1420 /*
1421 * py is the line in the screen to draw.
1422 * px is the start x and nx is the width to draw.
1423 * atx,aty is the line on the terminal to draw it.
1424 */
1425
1426 flags = (tty->flags & TTY_NOCURSOR);
1427 tty->flags |= TTY_NOCURSOR;
1428 tty_update_mode(tty, tty->mode, s);
1429
1430 tty_region_off(tty);
1431 tty_margin_off(tty);
1432
1433 /*
1434 * Clamp the width to cellsize - note this is not cellused, because
1435 * there may be empty background cells after it (from BCE).
1436 */
1437 sx = screen_size_x(s);
1438 if (nx > sx)
1439 nx = sx;
1440 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1441 if (sx > cellsize)
1442 sx = cellsize;
1443 if (sx > tty->sx)
1444 sx = tty->sx;
1445 if (sx > nx)
1446 sx = nx;
1447 ux = 0;
1448
1449 if (py == 0)
1450 gl = NULL;
1451 else
1452 gl = grid_get_line(gd, gd->hsize + py - 1);
1453 if (gl == NULL ||
1454 (~gl->flags & GRID_LINE_WRAPPED) ||
1455 atx != 0 ||
1456 tty->cx < tty->sx ||
1457 nx < tty->sx) {
1458 if (nx < tty->sx &&
1459 atx == 0 &&
1460 px + sx != nx &&
1461 tty_term_has(tty->term, TTYC_EL1) &&
1462 !tty_fake_bce(tty, defaults, 8) &&
1463 c->overlay_check == NULL) {
1464 tty_default_attributes(tty, defaults, palette, 8,
1465 s->hyperlinks);
1466 tty_cursor(tty, nx - 1, aty);
1467 tty_putcode(tty, TTYC_EL1);
1468 cleared = 1;
1469 }
1470 } else {
1471 log_debug("%s: wrapped line %u", __func__, aty);
1472 wrapped = 1;
1473 }
1474
1475 memcpy(&last, &grid_default_cell, sizeof last);
1476 len = 0;
1477 width = 0;
1478
1479 for (i = 0; i < sx; i++) {
1480 grid_view_get_cell(gd, px + i, py, &gc);
1481 gcp = tty_check_codeset(tty, &gc);
1482 if (len != 0 &&
1483 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1484 (gcp->attr & GRID_ATTR_CHARSET) ||
1485 gcp->flags != last.flags ||
1486 gcp->attr != last.attr ||
1487 gcp->fg != last.fg ||
1488 gcp->bg != last.bg ||
1489 gcp->us != last.us ||
1490 gcp->link != last.link ||
1491 ux + width + gcp->data.width > nx ||
1492 (sizeof buf) - len < gcp->data.size)) {
1493 tty_attributes(tty, &last, defaults, palette,
1494 s->hyperlinks);
1495 if (last.flags & GRID_FLAG_CLEARED) {
1496 log_debug("%s: %zu cleared", __func__, len);
1497 tty_clear_line(tty, defaults, aty, atx + ux,
1498 width, last.bg);
1499 } else {
1500 if (!wrapped || atx != 0 || ux != 0)
1501 tty_cursor(tty, atx + ux, aty);
1502 tty_putn(tty, buf, len, width);
1503 }
1504 ux += width;
1505
1506 len = 0;
1507 width = 0;
1508 wrapped = 0;
1509 }
1510
1511 if (gcp->flags & GRID_FLAG_SELECTED)
1512 screen_select_cell(s, &last, gcp);
1513 else
1514 memcpy(&last, gcp, sizeof last);
1515
1516 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1517 &r);
1518 hidden = 0;
1519 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1520 hidden += r.nx[j];
1521 hidden = gcp->data.width - hidden;
1522 if (hidden != 0 && hidden == gcp->data.width) {
1523 if (~gcp->flags & GRID_FLAG_PADDING)
1524 ux += gcp->data.width;
1525 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1526 if (~gcp->flags & GRID_FLAG_PADDING) {
1527 tty_attributes(tty, &last, defaults, palette,
1528 s->hyperlinks);
1529 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1530 if (r.nx[j] == 0)
1531 continue;
1532 /* Effective width drawn so far. */
1533 eux = r.px[j] - atx;
1534 if (eux < nx) {
1535 tty_cursor(tty, r.px[j], aty);
1536 nxx = nx - eux;
1537 if (r.nx[j] > nxx)
1538 r.nx[j] = nxx;
1539 tty_repeat_space(tty, r.nx[j]);
1540 ux = eux + r.nx[j];
1541 }
1542 }
1543 }
1544 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1545 tty_attributes(tty, &last, defaults, palette,
1546 s->hyperlinks);
1547 tty_cursor(tty, atx + ux, aty);
1548 for (j = 0; j < gcp->data.size; j++)
1549 tty_putc(tty, gcp->data.data[j]);
1550 ux += gcp->data.width;
1551 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1552 memcpy(buf + len, gcp->data.data, gcp->data.size);
1553 len += gcp->data.size;
1554 width += gcp->data.width;
1555 }
1556 }
1557 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1558 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1559 if (last.flags & GRID_FLAG_CLEARED) {
1560 log_debug("%s: %zu cleared (end)", __func__, len);
1561 tty_clear_line(tty, defaults, aty, atx + ux, width,
1562 last.bg);
1563 } else {
1564 if (!wrapped || atx != 0 || ux != 0)
1565 tty_cursor(tty, atx + ux, aty);
1566 tty_putn(tty, buf, len, width);
1567 }
1568 ux += width;
1569 }
1570
1571 if (!cleared && ux < nx) {
1572 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1573 nx - ux, len);
1574 tty_default_attributes(tty, defaults, palette, 8,
1575 s->hyperlinks);
1576 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1577 }
1578
1579 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1580 tty_update_mode(tty, tty->mode, s);
1581 }
1582
1583 void
1584 tty_sync_start(struct tty *tty)
1585 {
1586 if (tty->flags & TTY_BLOCK)
1587 return;
1588 if (tty->flags & TTY_SYNCING)
1589 return;
1590 tty->flags |= TTY_SYNCING;
1591
1592 if (tty_term_has(tty->term, TTYC_SYNC)) {
1593 log_debug("%s sync start", tty->client->name);
1594 tty_putcode1(tty, TTYC_SYNC, 1);
1595 }
1596 }
1597
1598 void
1599 tty_sync_end(struct tty *tty)
1600 {
1601 if (tty->flags & TTY_BLOCK)
1602 return;
1603 if (~tty->flags & TTY_SYNCING)
1604 return;
1605 tty->flags &= ~TTY_SYNCING;
1606
1607 if (tty_term_has(tty->term, TTYC_SYNC)) {
1608 log_debug("%s sync end", tty->client->name);
1609 tty_putcode1(tty, TTYC_SYNC, 2);
1610 }
1611 }
1612
1613 static int
1614 tty_client_ready(struct client *c)
1615 {
1616 if (c->session == NULL || c->tty.term == NULL)
1617 return (0);
1618 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1619 return (0);
1620 if (c->tty.flags & TTY_FREEZE)
1621 return (0);
1622 return (1);
1623 }
1624
1625 void
1626 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1627 struct tty_ctx *ctx)
1628 {
1629 struct client *c;
1630 int state;
1631
1632 if (ctx->set_client_cb == NULL)
1633 return;
1634 TAILQ_FOREACH(c, &clients, entry) {
1635 if (ctx->allow_invisible_panes) {
1636 if (c->session == NULL ||
1637 c->tty.term == NULL ||
1638 c->flags & CLIENT_SUSPENDED)
1639 continue;
1640 } else {
1641 if (!tty_client_ready(c))
1642 continue;
1643 state = ctx->set_client_cb(ctx, c);
1644 if (state == -1)
1645 break;
1646 if (state == 0)
1647 continue;
1648 }
1649 cmdfn(&c->tty, ctx);
1650 }
1651 }
1652
1653 void
1654 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1655 {
1656 struct client *c = tty->client;
1657
1658 if (ctx->bigger ||
1659 !tty_full_width(tty, ctx) ||
1660 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1661 (!tty_term_has(tty->term, TTYC_ICH) &&
1662 !tty_term_has(tty->term, TTYC_ICH1)) ||
1663 c->overlay_check != NULL) {
1664 tty_draw_pane(tty, ctx, ctx->ocy);
1665 return;
1666 }
1667
1668 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1669 ctx->s->hyperlinks);
1670
1671 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1672
1673 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1674 }
1675
1676 void
1677 tty_cmd_deletecharacter(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_DCH) &&
1685 !tty_term_has(tty->term, TTYC_DCH1)) ||
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_DCH, TTYC_DCH1, ctx->num);
1697 }
1698
1699 void
1700 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1701 {
1702 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1703 ctx->s->hyperlinks);
1704
1705 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1706 }
1707
1708 void
1709 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1710 {
1711 struct client *c = tty->client;
1712
1713 if (ctx->bigger ||
1714 !tty_full_width(tty, ctx) ||
1715 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1716 !tty_term_has(tty->term, TTYC_CSR) ||
1717 !tty_term_has(tty->term, TTYC_IL1) ||
1718 ctx->sx == 1 ||
1719 ctx->sy == 1 ||
1720 c->overlay_check != NULL) {
1721 tty_redraw_region(tty, ctx);
1722 return;
1723 }
1724
1725 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1726 ctx->s->hyperlinks);
1727
1728 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1729 tty_margin_off(tty);
1730 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1731
1732 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1733 tty->cx = tty->cy = UINT_MAX;
1734 }
1735
1736 void
1737 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1738 {
1739 struct client *c = tty->client;
1740
1741 if (ctx->bigger ||
1742 !tty_full_width(tty, ctx) ||
1743 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1744 !tty_term_has(tty->term, TTYC_CSR) ||
1745 !tty_term_has(tty->term, TTYC_DL1) ||
1746 ctx->sx == 1 ||
1747 ctx->sy == 1 ||
1748 c->overlay_check != NULL) {
1749 tty_redraw_region(tty, ctx);
1750 return;
1751 }
1752
1753 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1754 ctx->s->hyperlinks);
1755
1756 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1757 tty_margin_off(tty);
1758 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1759
1760 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1761 tty->cx = tty->cy = UINT_MAX;
1762 }
1763
1764 void
1765 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1766 {
1767 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1768 ctx->s->hyperlinks);
1769
1770 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1771 }
1772
1773 void
1774 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1775 {
1776 u_int nx = ctx->sx - ctx->ocx;
1777
1778 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1779 ctx->s->hyperlinks);
1780
1781 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1782 }
1783
1784 void
1785 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1786 {
1787 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1788 ctx->s->hyperlinks);
1789
1790 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1791 }
1792
1793 void
1794 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1795 {
1796 struct client *c = tty->client;
1797
1798 if (ctx->ocy != ctx->orupper)
1799 return;
1800
1801 if (ctx->bigger ||
1802 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1803 tty_fake_bce(tty, &ctx->defaults, 8) ||
1804 !tty_term_has(tty->term, TTYC_CSR) ||
1805 (!tty_term_has(tty->term, TTYC_RI) &&
1806 !tty_term_has(tty->term, TTYC_RIN)) ||
1807 ctx->sx == 1 ||
1808 ctx->sy == 1 ||
1809 c->overlay_check != NULL) {
1810 tty_redraw_region(tty, ctx);
1811 return;
1812 }
1813
1814 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1815 ctx->s->hyperlinks);
1816
1817 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1818 tty_margin_pane(tty, ctx);
1819 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1820
1821 if (tty_term_has(tty->term, TTYC_RI))
1822 tty_putcode(tty, TTYC_RI);
1823 else
1824 tty_putcode1(tty, TTYC_RIN, 1);
1825 }
1826
1827 void
1828 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1829 {
1830 struct client *c = tty->client;
1831
1832 if (ctx->ocy != ctx->orlower)
1833 return;
1834
1835 if (ctx->bigger ||
1836 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1837 tty_fake_bce(tty, &ctx->defaults, 8) ||
1838 !tty_term_has(tty->term, TTYC_CSR) ||
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_pane(tty, ctx);
1851
1852 /*
1853 * If we want to wrap a pane while using margins, the cursor needs to
1854 * be exactly on the right of the region. If the cursor is entirely off
1855 * the edge - move it back to the right. Some terminals are funny about
1856 * this and insert extra spaces, so only use the right if margins are
1857 * enabled.
1858 */
1859 if (ctx->xoff + ctx->ocx > tty->rright) {
1860 if (!tty_use_margin(tty))
1861 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1862 else
1863 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1864 } else
1865 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1866
1867 tty_putc(tty, '\n');
1868 }
1869
1870 void
1871 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1872 {
1873 struct client *c = tty->client;
1874 u_int i;
1875
1876 if (ctx->bigger ||
1877 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1878 tty_fake_bce(tty, &ctx->defaults, 8) ||
1879 !tty_term_has(tty->term, TTYC_CSR) ||
1880 ctx->sx == 1 ||
1881 ctx->sy == 1 ||
1882 c->overlay_check != NULL) {
1883 tty_redraw_region(tty, ctx);
1884 return;
1885 }
1886
1887 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1888 ctx->s->hyperlinks);
1889
1890 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1891 tty_margin_pane(tty, ctx);
1892
1893 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1894 if (!tty_use_margin(tty))
1895 tty_cursor(tty, 0, tty->rlower);
1896 else
1897 tty_cursor(tty, tty->rright, tty->rlower);
1898 for (i = 0; i < ctx->num; i++)
1899 tty_putc(tty, '\n');
1900 } else {
1901 if (tty->cy == UINT_MAX)
1902 tty_cursor(tty, 0, 0);
1903 else
1904 tty_cursor(tty, 0, tty->cy);
1905 tty_putcode1(tty, TTYC_INDN, ctx->num);
1906 }
1907 }
1908
1909 void
1910 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1911 {
1912 u_int i;
1913 struct client *c = tty->client;
1914
1915 if (ctx->bigger ||
1916 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1917 tty_fake_bce(tty, &ctx->defaults, 8) ||
1918 !tty_term_has(tty->term, TTYC_CSR) ||
1919 (!tty_term_has(tty->term, TTYC_RI) &&
1920 !tty_term_has(tty->term, TTYC_RIN)) ||
1921 ctx->sx == 1 ||
1922 ctx->sy == 1 ||
1923 c->overlay_check != NULL) {
1924 tty_redraw_region(tty, ctx);
1925 return;
1926 }
1927
1928 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1929 ctx->s->hyperlinks);
1930
1931 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1932 tty_margin_pane(tty, ctx);
1933 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1934
1935 if (tty_term_has(tty->term, TTYC_RIN))
1936 tty_putcode1(tty, TTYC_RIN, ctx->num);
1937 else {
1938 for (i = 0; i < ctx->num; i++)
1939 tty_putcode(tty, TTYC_RI);
1940 }
1941 }
1942
1943 void
1944 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1945 {
1946 u_int px, py, nx, ny;
1947
1948 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1949 ctx->s->hyperlinks);
1950
1951 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1952 tty_margin_off(tty);
1953
1954 px = 0;
1955 nx = ctx->sx;
1956 py = ctx->ocy + 1;
1957 ny = ctx->sy - ctx->ocy - 1;
1958
1959 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1960
1961 px = ctx->ocx;
1962 nx = ctx->sx - ctx->ocx;
1963 py = ctx->ocy;
1964
1965 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1966 }
1967
1968 void
1969 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1970 {
1971 u_int px, py, nx, ny;
1972
1973 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1974 ctx->s->hyperlinks);
1975
1976 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1977 tty_margin_off(tty);
1978
1979 px = 0;
1980 nx = ctx->sx;
1981 py = 0;
1982 ny = ctx->ocy;
1983
1984 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1985
1986 px = 0;
1987 nx = ctx->ocx + 1;
1988 py = ctx->ocy;
1989
1990 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1991 }
1992
1993 void
1994 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1995 {
1996 u_int px, py, nx, ny;
1997
1998 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1999 ctx->s->hyperlinks);
2000
2001 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2002 tty_margin_off(tty);
2003
2004 px = 0;
2005 nx = ctx->sx;
2006 py = 0;
2007 ny = ctx->sy;
2008
2009 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2010 }
2011
2012 void
2013 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2014 {
2015 u_int i, j;
2016
2017 if (ctx->bigger) {
2018 ctx->redraw_cb(ctx);
2019 return;
2020 }
2021
2022 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2023 ctx->s->hyperlinks);
2024
2025 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2026 tty_margin_off(tty);
2027
2028 for (j = 0; j < ctx->sy; j++) {
2029 tty_cursor_pane(tty, ctx, 0, j);
2030 for (i = 0; i < ctx->sx; i++)
2031 tty_putc(tty, 'E');
2032 }
2033 }
2034
2035 void
2036 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2037 {
2038 const struct grid_cell *gcp = ctx->cell;
2039 struct screen *s = ctx->s;
2040 struct overlay_ranges r;
2041 u_int px, py, i, vis = 0;
2042
2043 px = ctx->xoff + ctx->ocx - ctx->wox;
2044 py = ctx->yoff + ctx->ocy - ctx->woy;
2045 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2046 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2047 return;
2048
2049 /* Handle partially obstructed wide characters. */
2050 if (gcp->data.width > 1) {
2051 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2052 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2053 vis += r.nx[i];
2054 if (vis < gcp->data.width) {
2055 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2056 px, py, &ctx->defaults, ctx->palette);
2057 return;
2058 }
2059 }
2060
2061 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2062 ctx->ocy == ctx->orlower &&
2063 tty_full_width(tty, ctx))
2064 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2065
2066 tty_margin_off(tty);
2067 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2068
2069 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2070 ctx->s->hyperlinks);
2071 }
2072
2073 void
2074 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2075 {
2076 struct overlay_ranges r;
2077 u_int i, px, py, cx;
2078 char *cp = ctx->ptr;
2079
2080 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2081 return;
2082
2083 if (ctx->bigger &&
2084 (ctx->xoff + ctx->ocx < ctx->wox ||
2085 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2086 if (!ctx->wrapped ||
2087 !tty_full_width(tty, ctx) ||
2088 (tty->term->flags & TERM_NOAM) ||
2089 ctx->xoff + ctx->ocx != 0 ||
2090 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2091 tty->cx < tty->sx ||
2092 tty->cy == tty->rlower)
2093 tty_draw_pane(tty, ctx, ctx->ocy);
2094 else
2095 ctx->redraw_cb(ctx);
2096 return;
2097 }
2098
2099 tty_margin_off(tty);
2100 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2101 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2102
2103 /* Get tty position from pane position for overlay check. */
2104 px = ctx->xoff + ctx->ocx - ctx->wox;
2105 py = ctx->yoff + ctx->ocy - ctx->woy;
2106
2107 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2108 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2109 if (r.nx[i] == 0)
2110 continue;
2111 /* Convert back to pane position for printing. */
2112 cx = r.px[i] - ctx->xoff + ctx->wox;
2113 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2114 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2115 }
2116 }
2117
2118 void
2119 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2120 {
2121 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2122 }
2123
2124 void
2125 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2126 size_t len)
2127 {
2128 char *encoded;
2129 size_t size;
2130
2131 if (~tty->flags & TTY_STARTED)
2132 return;
2133 if (!tty_term_has(tty->term, TTYC_MS))
2134 return;
2135
2136 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2137 encoded = xmalloc(size);
2138
2139 b64_ntop(buf, len, encoded, size);
2140 tty->flags |= TTY_NOBLOCK;
2141 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded);
2142
2143 free(encoded);
2144 }
2145
2146 void
2147 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2148 {
2149 tty->flags |= TTY_NOBLOCK;
2150 tty_add(tty, ctx->ptr, ctx->num);
2151 tty_invalidate(tty);
2152 }
2153
2154 void
2155 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2156 {
2157 if (ctx->num == 0x11) {
2158 /*
2159 * This is an overlay and a command that moves the cursor so
2160 * start synchronized updates.
2161 */
2162 tty_sync_start(tty);
2163 } else if (~ctx->num & 0x10) {
2164 /*
2165 * This is a pane. If there is an overlay, always start;
2166 * otherwise, only if requested.
2167 */
2168 if (ctx->num || tty->client->overlay_draw != NULL)
2169 tty_sync_start(tty);
2170 }
2171 }
2172
2173 void
2174 tty_cell(struct tty *tty, const struct grid_cell *gc,
2175 const struct grid_cell *defaults, struct colour_palette *palette,
2176 struct hyperlinks *hl)
2177 {
2178 const struct grid_cell *gcp;
2179
2180 /* Skip last character if terminal is stupid. */
2181 if ((tty->term->flags & TERM_NOAM) &&
2182 tty->cy == tty->sy - 1 &&
2183 tty->cx == tty->sx - 1)
2184 return;
2185
2186 /* If this is a padding character, do nothing. */
2187 if (gc->flags & GRID_FLAG_PADDING)
2188 return;
2189
2190 /* Check the output codeset and apply attributes. */
2191 gcp = tty_check_codeset(tty, gc);
2192 tty_attributes(tty, gcp, defaults, palette, hl);
2193
2194 /* If it is a single character, write with putc to handle ACS. */
2195 if (gcp->data.size == 1) {
2196 tty_attributes(tty, gcp, defaults, palette, hl);
2197 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2198 return;
2199 tty_putc(tty, *gcp->data.data);
2200 return;
2201 }
2202
2203 /* Write the data. */
2204 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2205 }
2206
2207 void
2208 tty_reset(struct tty *tty)
2209 {
2210 struct grid_cell *gc = &tty->cell;
2211
2212 if (!grid_cells_equal(gc, &grid_default_cell)) {
2213 if (gc->link != 0)
2214 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2215 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2216 tty_putcode(tty, TTYC_RMACS);
2217 tty_putcode(tty, TTYC_SGR0);
2218 memcpy(gc, &grid_default_cell, sizeof *gc);
2219 }
2220 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2221 }
2222
2223 static void
2224 tty_invalidate(struct tty *tty)
2225 {
2226 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2227 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2228
2229 tty->cx = tty->cy = UINT_MAX;
2230 tty->rupper = tty->rleft = UINT_MAX;
2231 tty->rlower = tty->rright = UINT_MAX;
2232
2233 if (tty->flags & TTY_STARTED) {
2234 if (tty_use_margin(tty))
2235 tty_putcode(tty, TTYC_ENMG);
2236 tty_putcode(tty, TTYC_SGR0);
2237
2238 tty->mode = ALL_MODES;
2239 tty_update_mode(tty, MODE_CURSOR, NULL);
2240
2241 tty_cursor(tty, 0, 0);
2242 tty_region_off(tty);
2243 tty_margin_off(tty);
2244 } else
2245 tty->mode = MODE_CURSOR;
2246 }
2247
2248 /* Turn off margin. */
2249 void
2250 tty_region_off(struct tty *tty)
2251 {
2252 tty_region(tty, 0, tty->sy - 1);
2253 }
2254
2255 /* Set region inside pane. */
2256 static void
2257 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2258 u_int rlower)
2259 {
2260 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2261 ctx->yoff + rlower - ctx->woy);
2262 }
2263
2264 /* Set region at absolute position. */
2265 static void
2266 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2267 {
2268 if (tty->rlower == rlower && tty->rupper == rupper)
2269 return;
2270 if (!tty_term_has(tty->term, TTYC_CSR))
2271 return;
2272
2273 tty->rupper = rupper;
2274 tty->rlower = rlower;
2275
2276 /*
2277 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2278 * 0,0 if it is beyond the last column (they do not reset their wrap
2279 * flag so further output causes a line feed). As a workaround, do an
2280 * explicit move to 0 first.
2281 */
2282 if (tty->cx >= tty->sx) {
2283 if (tty->cy == UINT_MAX)
2284 tty_cursor(tty, 0, 0);
2285 else
2286 tty_cursor(tty, 0, tty->cy);
2287 }
2288
2289 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2290 tty->cx = tty->cy = UINT_MAX;
2291 }
2292
2293 /* Turn off margin. */
2294 void
2295 tty_margin_off(struct tty *tty)
2296 {
2297 tty_margin(tty, 0, tty->sx - 1);
2298 }
2299
2300 /* Set margin inside pane. */
2301 static void
2302 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2303 {
2304 tty_margin(tty, ctx->xoff - ctx->wox,
2305 ctx->xoff + ctx->sx - 1 - ctx->wox);
2306 }
2307
2308 /* Set margin at absolute position. */
2309 static void
2310 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2311 {
2312 if (!tty_use_margin(tty))
2313 return;
2314 if (tty->rleft == rleft && tty->rright == rright)
2315 return;
2316
2317 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2318
2319 tty->rleft = rleft;
2320 tty->rright = rright;
2321
2322 if (rleft == 0 && rright == tty->sx - 1)
2323 tty_putcode(tty, TTYC_CLMG);
2324 else
2325 tty_putcode2(tty, TTYC_CMG, rleft, rright);
2326 tty->cx = tty->cy = UINT_MAX;
2327 }
2328
2329 /*
2330 * Move the cursor, unless it would wrap itself when the next character is
2331 * printed.
2332 */
2333 static void
2334 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2335 u_int cx, u_int cy)
2336 {
2337 if (!ctx->wrapped ||
2338 !tty_full_width(tty, ctx) ||
2339 (tty->term->flags & TERM_NOAM) ||
2340 ctx->xoff + cx != 0 ||
2341 ctx->yoff + cy != tty->cy + 1 ||
2342 tty->cx < tty->sx ||
2343 tty->cy == tty->rlower)
2344 tty_cursor_pane(tty, ctx, cx, cy);
2345 else
2346 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2347 }
2348
2349 /* Move cursor inside pane. */
2350 static void
2351 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2352 {
2353 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2354 }
2355
2356 /* Move cursor to absolute position. */
2357 void
2358 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2359 {
2360 struct tty_term *term = tty->term;
2361 u_int thisx, thisy;
2362 int change;
2363
2364 if (tty->flags & TTY_BLOCK)
2365 return;
2366
2367 thisx = tty->cx;
2368 thisy = tty->cy;
2369
2370 /*
2371 * If in the automargin space, and want to be there, do not move.
2372 * Otherwise, force the cursor to be in range (and complain).
2373 */
2374 if (cx == thisx && cy == thisy && cx == tty->sx)
2375 return;
2376 if (cx > tty->sx - 1) {
2377 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2378 cx = tty->sx - 1;
2379 }
2380
2381 /* No change. */
2382 if (cx == thisx && cy == thisy)
2383 return;
2384
2385 /* Currently at the very end of the line - use absolute movement. */
2386 if (thisx > tty->sx - 1)
2387 goto absolute;
2388
2389 /* Move to home position (0, 0). */
2390 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2391 tty_putcode(tty, TTYC_HOME);
2392 goto out;
2393 }
2394
2395 /* Zero on the next line. */
2396 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2397 (!tty_use_margin(tty) || tty->rleft == 0)) {
2398 tty_putc(tty, '\r');
2399 tty_putc(tty, '\n');
2400 goto out;
2401 }
2402
2403 /* Moving column or row. */
2404 if (cy == thisy) {
2405 /*
2406 * Moving column only, row staying the same.
2407 */
2408
2409 /* To left edge. */
2410 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2411 tty_putc(tty, '\r');
2412 goto out;
2413 }
2414
2415 /* One to the left. */
2416 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2417 tty_putcode(tty, TTYC_CUB1);
2418 goto out;
2419 }
2420
2421 /* One to the right. */
2422 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2423 tty_putcode(tty, TTYC_CUF1);
2424 goto out;
2425 }
2426
2427 /* Calculate difference. */
2428 change = thisx - cx; /* +ve left, -ve right */
2429
2430 /*
2431 * Use HPA if change is larger than absolute, otherwise move
2432 * the cursor with CUB/CUF.
2433 */
2434 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2435 tty_putcode1(tty, TTYC_HPA, cx);
2436 goto out;
2437 } else if (change > 0 &&
2438 tty_term_has(term, TTYC_CUB) &&
2439 !tty_use_margin(tty)) {
2440 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2441 tty_putcode(tty, TTYC_CUB1);
2442 tty_putcode(tty, TTYC_CUB1);
2443 goto out;
2444 }
2445 tty_putcode1(tty, TTYC_CUB, change);
2446 goto out;
2447 } else if (change < 0 &&
2448 tty_term_has(term, TTYC_CUF) &&
2449 !tty_use_margin(tty)) {
2450 tty_putcode1(tty, TTYC_CUF, -change);
2451 goto out;
2452 }
2453 } else if (cx == thisx) {
2454 /*
2455 * Moving row only, column staying the same.
2456 */
2457
2458 /* One above. */
2459 if (thisy != tty->rupper &&
2460 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2461 tty_putcode(tty, TTYC_CUU1);
2462 goto out;
2463 }
2464
2465 /* One below. */
2466 if (thisy != tty->rlower &&
2467 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2468 tty_putcode(tty, TTYC_CUD1);
2469 goto out;
2470 }
2471
2472 /* Calculate difference. */
2473 change = thisy - cy; /* +ve up, -ve down */
2474
2475 /*
2476 * Try to use VPA if change is larger than absolute or if this
2477 * change would cross the scroll region, otherwise use CUU/CUD.
2478 */
2479 if ((u_int) abs(change) > cy ||
2480 (change < 0 && cy - change > tty->rlower) ||
2481 (change > 0 && cy - change < tty->rupper)) {
2482 if (tty_term_has(term, TTYC_VPA)) {
2483 tty_putcode1(tty, TTYC_VPA, cy);
2484 goto out;
2485 }
2486 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2487 tty_putcode1(tty, TTYC_CUU, change);
2488 goto out;
2489 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2490 tty_putcode1(tty, TTYC_CUD, -change);
2491 goto out;
2492 }
2493 }
2494
2495 absolute:
2496 /* Absolute movement. */
2497 tty_putcode2(tty, TTYC_CUP, cy, cx);
2498
2499 out:
2500 tty->cx = cx;
2501 tty->cy = cy;
2502 }
2503
2504 static void
2505 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2506 struct hyperlinks *hl)
2507 {
2508 const char *uri, *id;
2509
2510 if (gc->link == tty->cell.link)
2511 return;
2512 tty->cell.link = gc->link;
2513
2514 if (hl == NULL)
2515 return;
2516
2517 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2518 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2519 else
2520 tty_putcode_ptr2(tty, TTYC_HLS, id, uri);
2521 }
2522
2523 void
2524 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2525 const struct grid_cell *defaults, struct colour_palette *palette,
2526 struct hyperlinks *hl)
2527 {
2528 struct grid_cell *tc = &tty->cell, gc2;
2529 int changed;
2530
2531 /* Copy cell and update default colours. */
2532 memcpy(&gc2, gc, sizeof gc2);
2533 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2534 if (gc2.fg == 8)
2535 gc2.fg = defaults->fg;
2536 if (gc2.bg == 8)
2537 gc2.bg = defaults->bg;
2538 }
2539
2540 /* Ignore cell if it is the same as the last one. */
2541 if (gc2.attr == tty->last_cell.attr &&
2542 gc2.fg == tty->last_cell.fg &&
2543 gc2.bg == tty->last_cell.bg &&
2544 gc2.us == tty->last_cell.us &&
2545 gc2.link == tty->last_cell.link)
2546 return;
2547
2548 /*
2549 * If no setab, try to use the reverse attribute as a best-effort for a
2550 * non-default background. This is a bit of a hack but it doesn't do
2551 * any serious harm and makes a couple of applications happier.
2552 */
2553 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2554 if (gc2.attr & GRID_ATTR_REVERSE) {
2555 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2556 gc2.attr &= ~GRID_ATTR_REVERSE;
2557 } else {
2558 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2559 gc2.attr |= GRID_ATTR_REVERSE;
2560 }
2561 }
2562
2563 /* Fix up the colours if necessary. */
2564 tty_check_fg(tty, palette, &gc2);
2565 tty_check_bg(tty, palette, &gc2);
2566 tty_check_us(tty, palette, &gc2);
2567
2568 /*
2569 * If any bits are being cleared or the underline colour is now default,
2570 * reset everything.
2571 */
2572 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2573 tty_reset(tty);
2574
2575 /*
2576 * Set the colours. This may call tty_reset() (so it comes next) and
2577 * may add to (NOT remove) the desired attributes.
2578 */
2579 tty_colours(tty, &gc2);
2580
2581 /* Filter out attribute bits already set. */
2582 changed = gc2.attr & ~tc->attr;
2583 tc->attr = gc2.attr;
2584
2585 /* Set the attributes. */
2586 if (changed & GRID_ATTR_BRIGHT)
2587 tty_putcode(tty, TTYC_BOLD);
2588 if (changed & GRID_ATTR_DIM)
2589 tty_putcode(tty, TTYC_DIM);
2590 if (changed & GRID_ATTR_ITALICS)
2591 tty_set_italics(tty);
2592 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2593 if ((changed & GRID_ATTR_UNDERSCORE) ||
2594 !tty_term_has(tty->term, TTYC_SMULX))
2595 tty_putcode(tty, TTYC_SMUL);
2596 else if (changed & GRID_ATTR_UNDERSCORE_2)
2597 tty_putcode1(tty, TTYC_SMULX, 2);
2598 else if (changed & GRID_ATTR_UNDERSCORE_3)
2599 tty_putcode1(tty, TTYC_SMULX, 3);
2600 else if (changed & GRID_ATTR_UNDERSCORE_4)
2601 tty_putcode1(tty, TTYC_SMULX, 4);
2602 else if (changed & GRID_ATTR_UNDERSCORE_5)
2603 tty_putcode1(tty, TTYC_SMULX, 5);
2604 }
2605 if (changed & GRID_ATTR_BLINK)
2606 tty_putcode(tty, TTYC_BLINK);
2607 if (changed & GRID_ATTR_REVERSE) {
2608 if (tty_term_has(tty->term, TTYC_REV))
2609 tty_putcode(tty, TTYC_REV);
2610 else if (tty_term_has(tty->term, TTYC_SMSO))
2611 tty_putcode(tty, TTYC_SMSO);
2612 }
2613 if (changed & GRID_ATTR_HIDDEN)
2614 tty_putcode(tty, TTYC_INVIS);
2615 if (changed & GRID_ATTR_STRIKETHROUGH)
2616 tty_putcode(tty, TTYC_SMXX);
2617 if (changed & GRID_ATTR_OVERLINE)
2618 tty_putcode(tty, TTYC_SMOL);
2619 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2620 tty_putcode(tty, TTYC_SMACS);
2621
2622 /* Set hyperlink if any. */
2623 tty_hyperlink(tty, gc, hl);
2624
2625 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2626 }
2627
2628 static void
2629 tty_colours(struct tty *tty, const struct grid_cell *gc)
2630 {
2631 struct grid_cell *tc = &tty->cell;
2632 int have_ax;
2633
2634 /* No changes? Nothing is necessary. */
2635 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2636 return;
2637
2638 /*
2639 * Is either the default colour? This is handled specially because the
2640 * best solution might be to reset both colours to default, in which
2641 * case if only one is default need to fall onward to set the other
2642 * colour.
2643 */
2644 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2645 /*
2646 * If don't have AX but do have op, send sgr0 (op can't
2647 * actually be used because it is sometimes the same as sgr0
2648 * and sometimes isn't). This resets both colours to default.
2649 *
2650 * Otherwise, try to set the default colour only as needed.
2651 */
2652 have_ax = tty_term_flag(tty->term, TTYC_AX);
2653 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2654 tty_reset(tty);
2655 else {
2656 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2657 if (have_ax)
2658 tty_puts(tty, "\033[39m");
2659 else if (tc->fg != 7)
2660 tty_putcode1(tty, TTYC_SETAF, 7);
2661 tc->fg = gc->fg;
2662 }
2663 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2664 if (have_ax)
2665 tty_puts(tty, "\033[49m");
2666 else if (tc->bg != 0)
2667 tty_putcode1(tty, TTYC_SETAB, 0);
2668 tc->bg = gc->bg;
2669 }
2670 }
2671 }
2672
2673 /* Set the foreground colour. */
2674 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2675 tty_colours_fg(tty, gc);
2676
2677 /*
2678 * Set the background colour. This must come after the foreground as
2679 * tty_colour_fg() can call tty_reset().
2680 */
2681 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2682 tty_colours_bg(tty, gc);
2683
2684 /* Set the underscore colour. */
2685 if (gc->us != tc->us)
2686 tty_colours_us(tty, gc);
2687 }
2688
2689 static void
2690 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2691 struct grid_cell *gc)
2692 {
2693 u_char r, g, b;
2694 u_int colours;
2695 int c;
2696
2697 /*
2698 * Perform substitution if this pane has a palette. If the bright
2699 * attribute is set and Nobr is not present, use the bright entry in
2700 * the palette by changing to the aixterm colour
2701 */
2702 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2703 c = gc->fg;
2704 if (c < 8 &&
2705 gc->attr & GRID_ATTR_BRIGHT &&
2706 !tty_term_has(tty->term, TTYC_NOBR))
2707 c += 90;
2708 if ((c = colour_palette_get(palette, c)) != -1)
2709 gc->fg = c;
2710 }
2711
2712 /* Is this a 24-bit colour? */
2713 if (gc->fg & COLOUR_FLAG_RGB) {
2714 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2715 if (tty->term->flags & TERM_RGBCOLOURS)
2716 return;
2717 colour_split_rgb(gc->fg, &r, &g, &b);
2718 gc->fg = colour_find_rgb(r, g, b);
2719 }
2720
2721 /* How many colours does this terminal have? */
2722 if (tty->term->flags & TERM_256COLOURS)
2723 colours = 256;
2724 else
2725 colours = tty_term_number(tty->term, TTYC_COLORS);
2726
2727 /* Is this a 256-colour colour? */
2728 if (gc->fg & COLOUR_FLAG_256) {
2729 /* And not a 256 colour mode? */
2730 if (colours < 256) {
2731 gc->fg = colour_256to16(gc->fg);
2732 if (gc->fg & 8) {
2733 gc->fg &= 7;
2734 if (colours >= 16)
2735 gc->fg += 90;
2736 }
2737 }
2738 return;
2739 }
2740
2741 /* Is this an aixterm colour? */
2742 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2743 gc->fg -= 90;
2744 gc->attr |= GRID_ATTR_BRIGHT;
2745 }
2746 }
2747
2748 static void
2749 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2750 struct grid_cell *gc)
2751 {
2752 u_char r, g, b;
2753 u_int colours;
2754 int c;
2755
2756 /* Perform substitution if this pane has a palette. */
2757 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2758 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2759 gc->bg = c;
2760 }
2761
2762 /* Is this a 24-bit colour? */
2763 if (gc->bg & COLOUR_FLAG_RGB) {
2764 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2765 if (tty->term->flags & TERM_RGBCOLOURS)
2766 return;
2767 colour_split_rgb(gc->bg, &r, &g, &b);
2768 gc->bg = colour_find_rgb(r, g, b);
2769 }
2770
2771 /* How many colours does this terminal have? */
2772 if (tty->term->flags & TERM_256COLOURS)
2773 colours = 256;
2774 else
2775 colours = tty_term_number(tty->term, TTYC_COLORS);
2776
2777 /* Is this a 256-colour colour? */
2778 if (gc->bg & COLOUR_FLAG_256) {
2779 /*
2780 * And not a 256 colour mode? Translate to 16-colour
2781 * palette. Bold background doesn't exist portably, so just
2782 * discard the bold bit if set.
2783 */
2784 if (colours < 256) {
2785 gc->bg = colour_256to16(gc->bg);
2786 if (gc->bg & 8) {
2787 gc->bg &= 7;
2788 if (colours >= 16)
2789 gc->bg += 90;
2790 }
2791 }
2792 return;
2793 }
2794
2795 /* Is this an aixterm colour? */
2796 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2797 gc->bg -= 90;
2798 }
2799
2800 static void
2801 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2802 struct grid_cell *gc)
2803 {
2804 int c;
2805
2806 /* Perform substitution if this pane has a palette. */
2807 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2808 if ((c = colour_palette_get(palette, gc->us)) != -1)
2809 gc->us = c;
2810 }
2811
2812 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2813 if (gc->us & COLOUR_FLAG_256)
2814 gc->us = colour_256toRGB (gc->us);
2815 }
2816
2817 static void
2818 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2819 {
2820 struct grid_cell *tc = &tty->cell;
2821 char s[32];
2822
2823 /* Is this a 24-bit or 256-colour colour? */
2824 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2825 if (tty_try_colour(tty, gc->fg, "38") == 0)
2826 goto save;
2827 /* Should not get here, already converted in tty_check_fg. */
2828 return;
2829 }
2830
2831 /* Is this an aixterm bright colour? */
2832 if (gc->fg >= 90 && gc->fg <= 97) {
2833 if (tty->term->flags & TERM_256COLOURS) {
2834 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2835 tty_puts(tty, s);
2836 } else
2837 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2838 goto save;
2839 }
2840
2841 /* Otherwise set the foreground colour. */
2842 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2843
2844 save:
2845 /* Save the new values in the terminal current cell. */
2846 tc->fg = gc->fg;
2847 }
2848
2849 static void
2850 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2851 {
2852 struct grid_cell *tc = &tty->cell;
2853 char s[32];
2854
2855 /* Is this a 24-bit or 256-colour colour? */
2856 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2857 if (tty_try_colour(tty, gc->bg, "48") == 0)
2858 goto save;
2859 /* Should not get here, already converted in tty_check_bg. */
2860 return;
2861 }
2862
2863 /* Is this an aixterm bright colour? */
2864 if (gc->bg >= 90 && gc->bg <= 97) {
2865 if (tty->term->flags & TERM_256COLOURS) {
2866 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2867 tty_puts(tty, s);
2868 } else
2869 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2870 goto save;
2871 }
2872
2873 /* Otherwise set the background colour. */
2874 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2875
2876 save:
2877 /* Save the new values in the terminal current cell. */
2878 tc->bg = gc->bg;
2879 }
2880
2881 static void
2882 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2883 {
2884 struct grid_cell *tc = &tty->cell;
2885 u_int c;
2886 u_char r, g, b;
2887
2888 /* Clear underline colour. */
2889 if (gc->us == 0) {
2890 tty_putcode(tty, TTYC_OL);
2891 goto save;
2892 }
2893
2894 /* Must be an RGB colour - this should never happen. */
2895 if (~gc->us & COLOUR_FLAG_RGB)
2896 return;
2897
2898 /*
2899 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2900 * capability format. Calculate the colour value.
2901 */
2902 colour_split_rgb(gc->us, &r, &g, &b);
2903 c = (65536 * r) + (256 * g) + b;
2904
2905 /*
2906 * Write the colour. Only use setal if the RGB flag is set because the
2907 * non-RGB version may be wrong.
2908 */
2909 if (tty_term_has(tty->term, TTYC_SETULC))
2910 tty_putcode1(tty, TTYC_SETULC, c);
2911 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2912 tty_term_has(tty->term, TTYC_RGB))
2913 tty_putcode1(tty, TTYC_SETAL, c);
2914
2915 save:
2916 /* Save the new values in the terminal current cell. */
2917 tc->us = gc->us;
2918 }
2919
2920 static int
2921 tty_try_colour(struct tty *tty, int colour, const char *type)
2922 {
2923 u_char r, g, b;
2924
2925 if (colour & COLOUR_FLAG_256) {
2926 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2927 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2928 else if (tty_term_has(tty->term, TTYC_SETAB))
2929 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2930 return (0);
2931 }
2932
2933 if (colour & COLOUR_FLAG_RGB) {
2934 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2935 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2936 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2937 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2938 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2939 return (0);
2940 }
2941
2942 return (-1);
2943 }
2944
2945 static void
2946 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2947 {
2948 memcpy(gc, &grid_default_cell, sizeof *gc);
2949 gc->fg = wp->palette.fg;
2950 gc->bg = wp->palette.bg;
2951 }
2952
2953 void
2954 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2955 {
2956 struct options *oo = wp->options;
2957 struct format_tree *ft;
2958
2959 memcpy(gc, &grid_default_cell, sizeof *gc);
2960
2961 if (wp->flags & PANE_STYLECHANGED) {
2962 log_debug("%%%u: style changed", wp->id);
2963 wp->flags &= ~PANE_STYLECHANGED;
2964
2965 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
2966 FORMAT_NOJOBS);
2967 format_defaults(ft, NULL, NULL, NULL, wp);
2968 tty_window_default_style(&wp->cached_active_gc, wp);
2969 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
2970 tty_window_default_style(&wp->cached_gc, wp);
2971 style_add(&wp->cached_gc, oo, "window-style", ft);
2972 format_free(ft);
2973 }
2974
2975 if (gc->fg == 8) {
2976 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
2977 gc->fg = wp->cached_active_gc.fg;
2978 else
2979 gc->fg = wp->cached_gc.fg;
2980 }
2981
2982 if (gc->bg == 8) {
2983 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
2984 gc->bg = wp->cached_active_gc.bg;
2985 else
2986 gc->bg = wp->cached_gc.bg;
2987 }
2988 }
2989
2990 static void
2991 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
2992 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
2993 {
2994 struct grid_cell gc;
2995
2996 memcpy(&gc, &grid_default_cell, sizeof gc);
2997 gc.bg = bg;
2998 tty_attributes(tty, &gc, defaults, palette, hl);
2999 }
3000
3001 static void
3002 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
3003 {
3004 struct tty *tty = data;
3005 struct client *c = tty->client;
3006
3007 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3008 free(c->clipboard_panes);
3009 c->clipboard_panes = NULL;
3010 c->clipboard_npanes = 0;
3011
3012 tty->flags &= ~TTY_OSC52QUERY;
3013 }
3014
3015 void
3016 tty_clipboard_query(struct tty *tty)
3017 {
3018 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3019
3020 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3021 return;
3022 tty_putcode_ptr2(tty, TTYC_MS, "", "?");
3023
3024 tty->flags |= TTY_OSC52QUERY;
3025 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3026 evtimer_add(&tty->clipboard_timer, &tv);
3027 }