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Clarify text for new -A slightly, GitHub issue 3508.
[tmux.git] / tty.c
blob62707f2ae8fddf991d39576d69ee82675d3723c1
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
86 void
87 tty_create_log(void)
88 {
89 char name[64];
90
91 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
92
93 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
94 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
95 fatal("fcntl failed");
96 }
97
98 int
99 tty_init(struct tty *tty, struct client *c)
100 {
101 if (!isatty(c->fd))
102 return (-1);
103
104 memset(tty, 0, sizeof *tty);
105 tty->client = c;
106
107 tty->cstyle = SCREEN_CURSOR_DEFAULT;
108 tty->ccolour = -1;
109 tty->fg = tty->bg = -1;
110
111 if (tcgetattr(c->fd, &tty->tio) != 0)
112 return (-1);
113 return (0);
114 }
115
116 void
117 tty_resize(struct tty *tty)
118 {
119 struct client *c = tty->client;
120 struct winsize ws;
121 u_int sx, sy, xpixel, ypixel;
122
123 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
124 sx = ws.ws_col;
125 if (sx == 0) {
126 sx = 80;
127 xpixel = 0;
128 } else
129 xpixel = ws.ws_xpixel / sx;
130 sy = ws.ws_row;
131 if (sy == 0) {
132 sy = 24;
133 ypixel = 0;
134 } else
135 ypixel = ws.ws_ypixel / sy;
136 } else {
137 sx = 80;
138 sy = 24;
139 xpixel = 0;
140 ypixel = 0;
141 }
142 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
143 xpixel, ypixel);
144 tty_set_size(tty, sx, sy, xpixel, ypixel);
145 tty_invalidate(tty);
146 }
147
148 void
149 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
150 {
151 tty->sx = sx;
152 tty->sy = sy;
153 tty->xpixel = xpixel;
154 tty->ypixel = ypixel;
155 }
156
157 static void
158 tty_read_callback(__unused int fd, __unused short events, void *data)
159 {
160 struct tty *tty = data;
161 struct client *c = tty->client;
162 const char *name = c->name;
163 size_t size = EVBUFFER_LENGTH(tty->in);
164 int nread;
165
166 nread = evbuffer_read(tty->in, c->fd, -1);
167 if (nread == 0 || nread == -1) {
168 if (nread == 0)
169 log_debug("%s: read closed", name);
170 else
171 log_debug("%s: read error: %s", name, strerror(errno));
172 event_del(&tty->event_in);
173 server_client_lost(tty->client);
174 return;
175 }
176 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
177
178 while (tty_keys_next(tty))
179 ;
180 }
181
182 static void
183 tty_timer_callback(__unused int fd, __unused short events, void *data)
184 {
185 struct tty *tty = data;
186 struct client *c = tty->client;
187 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
188
189 log_debug("%s: %zu discarded", c->name, tty->discarded);
190
191 c->flags |= CLIENT_ALLREDRAWFLAGS;
192 c->discarded += tty->discarded;
193
194 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
195 tty->flags &= ~TTY_BLOCK;
196 tty_invalidate(tty);
197 return;
198 }
199 tty->discarded = 0;
200 evtimer_add(&tty->timer, &tv);
201 }
202
203 static int
204 tty_block_maybe(struct tty *tty)
205 {
206 struct client *c = tty->client;
207 size_t size = EVBUFFER_LENGTH(tty->out);
208 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
209
210 if (size == 0)
211 tty->flags &= ~TTY_NOBLOCK;
212 else if (tty->flags & TTY_NOBLOCK)
213 return (0);
214
215 if (size < TTY_BLOCK_START(tty))
216 return (0);
217
218 if (tty->flags & TTY_BLOCK)
219 return (1);
220 tty->flags |= TTY_BLOCK;
221
222 log_debug("%s: can't keep up, %zu discarded", c->name, size);
223
224 evbuffer_drain(tty->out, size);
225 c->discarded += size;
226
227 tty->discarded = 0;
228 evtimer_add(&tty->timer, &tv);
229 return (1);
230 }
231
232 static void
233 tty_write_callback(__unused int fd, __unused short events, void *data)
234 {
235 struct tty *tty = data;
236 struct client *c = tty->client;
237 size_t size = EVBUFFER_LENGTH(tty->out);
238 int nwrite;
239
240 nwrite = evbuffer_write(tty->out, c->fd);
241 if (nwrite == -1)
242 return;
243 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
244
245 if (c->redraw > 0) {
246 if ((size_t)nwrite >= c->redraw)
247 c->redraw = 0;
248 else
249 c->redraw -= nwrite;
250 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
251 c->redraw);
252 } else if (tty_block_maybe(tty))
253 return;
254
255 if (EVBUFFER_LENGTH(tty->out) != 0)
256 event_add(&tty->event_out, NULL);
257 }
258
259 int
260 tty_open(struct tty *tty, char **cause)
261 {
262 struct client *c = tty->client;
263
264 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
265 c->term_ncaps, &c->term_features, cause);
266 if (tty->term == NULL) {
267 tty_close(tty);
268 return (-1);
269 }
270 tty->flags |= TTY_OPENED;
271
272 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
273
274 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
275 tty_read_callback, tty);
276 tty->in = evbuffer_new();
277 if (tty->in == NULL)
278 fatal("out of memory");
279
280 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
281 tty->out = evbuffer_new();
282 if (tty->out == NULL)
283 fatal("out of memory");
284
285 evtimer_set(&tty->timer, tty_timer_callback, tty);
286
287 tty_start_tty(tty);
288 tty_keys_build(tty);
289
290 return (0);
291 }
292
293 static void
294 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
295 {
296 struct tty *tty = data;
297 struct client *c = tty->client;
298
299 log_debug("%s: start timer fired", c->name);
300 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
301 tty_update_features(tty);
302 tty->flags |= TTY_ALL_REQUEST_FLAGS;
303 }
304
305 void
306 tty_start_tty(struct tty *tty)
307 {
308 struct client *c = tty->client;
309 struct termios tio;
310 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
311
312 setblocking(c->fd, 0);
313 event_add(&tty->event_in, NULL);
314
315 memcpy(&tio, &tty->tio, sizeof tio);
316 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
317 tio.c_iflag |= IGNBRK;
318 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
319 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
320 ECHOKE|ISIG);
321 tio.c_cc[VMIN] = 1;
322 tio.c_cc[VTIME] = 0;
323 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
324 tcflush(c->fd, TCOFLUSH);
325
326 tty_putcode(tty, TTYC_SMCUP);
327
328 tty_putcode(tty, TTYC_SMKX);
329 tty_putcode(tty, TTYC_CLEAR);
330
331 if (tty_acs_needed(tty)) {
332 log_debug("%s: using capabilities for ACS", c->name);
333 tty_putcode(tty, TTYC_ENACS);
334 } else
335 log_debug("%s: using UTF-8 for ACS", c->name);
336
337 tty_putcode(tty, TTYC_CNORM);
338 if (tty_term_has(tty->term, TTYC_KMOUS)) {
339 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
340 tty_puts(tty, "\033[?1006l\033[?1005l");
341 }
342 if (tty_term_has(tty->term, TTYC_ENBP))
343 tty_putcode(tty, TTYC_ENBP);
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->ccolour != -1)
421 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
422
423 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
424 if (tty_term_has(tty->term, TTYC_KMOUS)) {
425 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
426 tty_raw(tty, "\033[?1006l\033[?1005l");
427 }
428 if (tty_term_has(tty->term, TTYC_DSBP))
429 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
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 tty->mode = mode;
829 }
830
831 static void
832 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
833 enum tty_code_code code1, u_int n)
834 {
835 if (tty_term_has(tty->term, code))
836 tty_putcode1(tty, code, n);
837 else {
838 while (n-- > 0)
839 tty_putcode(tty, code1);
840 }
841 }
842
843 static void
844 tty_repeat_space(struct tty *tty, u_int n)
845 {
846 static char s[500];
847
848 if (*s != ' ')
849 memset(s, ' ', sizeof s);
850
851 while (n > sizeof s) {
852 tty_putn(tty, s, sizeof s, sizeof s);
853 n -= sizeof s;
854 }
855 if (n != 0)
856 tty_putn(tty, s, n, n);
857 }
858
859 /* Is this window bigger than the terminal? */
860 int
861 tty_window_bigger(struct tty *tty)
862 {
863 struct client *c = tty->client;
864 struct window *w = c->session->curw->window;
865
866 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
867 }
868
869 /* What offset should this window be drawn at? */
870 int
871 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
872 {
873 *ox = tty->oox;
874 *oy = tty->ooy;
875 *sx = tty->osx;
876 *sy = tty->osy;
877
878 return (tty->oflag);
879 }
880
881 /* What offset should this window be drawn at? */
882 static int
883 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
884 {
885 struct client *c = tty->client;
886 struct window *w = c->session->curw->window;
887 struct window_pane *wp = server_client_get_pane(c);
888 u_int cx, cy, lines;
889
890 lines = status_line_size(c);
891
892 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
893 *ox = 0;
894 *oy = 0;
895 *sx = w->sx;
896 *sy = w->sy;
897
898 c->pan_window = NULL;
899 return (0);
900 }
901
902 *sx = tty->sx;
903 *sy = tty->sy - lines;
904
905 if (c->pan_window == w) {
906 if (*sx >= w->sx)
907 c->pan_ox = 0;
908 else if (c->pan_ox + *sx > w->sx)
909 c->pan_ox = w->sx - *sx;
910 *ox = c->pan_ox;
911 if (*sy >= w->sy)
912 c->pan_oy = 0;
913 else if (c->pan_oy + *sy > w->sy)
914 c->pan_oy = w->sy - *sy;
915 *oy = c->pan_oy;
916 return (1);
917 }
918
919 if (~wp->screen->mode & MODE_CURSOR) {
920 *ox = 0;
921 *oy = 0;
922 } else {
923 cx = wp->xoff + wp->screen->cx;
924 cy = wp->yoff + wp->screen->cy;
925
926 if (cx < *sx)
927 *ox = 0;
928 else if (cx > w->sx - *sx)
929 *ox = w->sx - *sx;
930 else
931 *ox = cx - *sx / 2;
932
933 if (cy < *sy)
934 *oy = 0;
935 else if (cy > w->sy - *sy)
936 *oy = w->sy - *sy;
937 else
938 *oy = cy - *sy / 2;
939 }
940
941 c->pan_window = NULL;
942 return (1);
943 }
944
945 /* Update stored offsets for a window and redraw if necessary. */
946 void
947 tty_update_window_offset(struct window *w)
948 {
949 struct client *c;
950
951 TAILQ_FOREACH(c, &clients, entry) {
952 if (c->session != NULL &&
953 c->session->curw != NULL &&
954 c->session->curw->window == w)
955 tty_update_client_offset(c);
956 }
957 }
958
959 /* Update stored offsets for a client and redraw if necessary. */
960 void
961 tty_update_client_offset(struct client *c)
962 {
963 u_int ox, oy, sx, sy;
964
965 if (~c->flags & CLIENT_TERMINAL)
966 return;
967
968 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
969 if (ox == c->tty.oox &&
970 oy == c->tty.ooy &&
971 sx == c->tty.osx &&
972 sy == c->tty.osy)
973 return;
974
975 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
976 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
977 ox, oy, sx, sy);
978
979 c->tty.oox = ox;
980 c->tty.ooy = oy;
981 c->tty.osx = sx;
982 c->tty.osy = sy;
983
984 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
985 }
986
987 /*
988 * Is the region large enough to be worth redrawing once later rather than
989 * probably several times now? Currently yes if it is more than 50% of the
990 * pane.
991 */
992 static int
993 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
994 {
995 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
996 }
997
998 /*
999 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1000 * emulated.
1001 */
1002 static int
1003 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1004 {
1005 if (tty_term_flag(tty->term, TTYC_BCE))
1006 return (0);
1007 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1008 return (1);
1009 return (0);
1010 }
1011
1012 /*
1013 * Redraw scroll region using data from screen (already updated). Used when
1014 * CSR not supported, or window is a pane that doesn't take up the full
1015 * width of the terminal.
1016 */
1017 static void
1018 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1019 {
1020 struct client *c = tty->client;
1021 u_int i;
1022
1023 /*
1024 * If region is large, schedule a redraw. In most cases this is likely
1025 * to be followed by some more scrolling.
1026 */
1027 if (tty_large_region(tty, ctx)) {
1028 log_debug("%s: %s large redraw", __func__, c->name);
1029 ctx->redraw_cb(ctx);
1030 return;
1031 }
1032
1033 for (i = ctx->orupper; i <= ctx->orlower; i++)
1034 tty_draw_pane(tty, ctx, i);
1035 }
1036
1037 /* Is this position visible in the pane? */
1038 static int
1039 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1040 u_int py, u_int nx, u_int ny)
1041 {
1042 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1043
1044 if (!ctx->bigger)
1045 return (1);
1046
1047 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1048 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1049 return (0);
1050 return (1);
1051 }
1052
1053 /* Clamp line position to visible part of pane. */
1054 static int
1055 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1056 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1057 {
1058 u_int xoff = ctx->rxoff + px;
1059
1060 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1061 return (0);
1062 *ry = ctx->yoff + py - ctx->woy;
1063
1064 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1065 /* All visible. */
1066 *i = 0;
1067 *x = ctx->xoff + px - ctx->wox;
1068 *rx = nx;
1069 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1070 /* Both left and right not visible. */
1071 *i = ctx->wox;
1072 *x = 0;
1073 *rx = ctx->wsx;
1074 } else if (xoff < ctx->wox) {
1075 /* Left not visible. */
1076 *i = ctx->wox - (ctx->xoff + px);
1077 *x = 0;
1078 *rx = nx - *i;
1079 } else {
1080 /* Right not visible. */
1081 *i = 0;
1082 *x = (ctx->xoff + px) - ctx->wox;
1083 *rx = ctx->wsx - *x;
1084 }
1085 if (*rx > nx)
1086 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1087
1088 return (1);
1089 }
1090
1091 /* Clear a line. */
1092 static void
1093 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1094 u_int px, u_int nx, u_int bg)
1095 {
1096 struct client *c = tty->client;
1097 struct overlay_ranges r;
1098 u_int i;
1099
1100 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1101
1102 /* Nothing to clear. */
1103 if (nx == 0)
1104 return;
1105
1106 /* If genuine BCE is available, can try escape sequences. */
1107 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1108 /* Off the end of the line, use EL if available. */
1109 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1110 tty_cursor(tty, px, py);
1111 tty_putcode(tty, TTYC_EL);
1112 return;
1113 }
1114
1115 /* At the start of the line. Use EL1. */
1116 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1117 tty_cursor(tty, px + nx - 1, py);
1118 tty_putcode(tty, TTYC_EL1);
1119 return;
1120 }
1121
1122 /* Section of line. Use ECH if possible. */
1123 if (tty_term_has(tty->term, TTYC_ECH)) {
1124 tty_cursor(tty, px, py);
1125 tty_putcode1(tty, TTYC_ECH, nx);
1126 return;
1127 }
1128 }
1129
1130 /*
1131 * Couldn't use an escape sequence, use spaces. Clear only the visible
1132 * bit if there is an overlay.
1133 */
1134 tty_check_overlay_range(tty, px, py, nx, &r);
1135 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1136 if (r.nx[i] == 0)
1137 continue;
1138 tty_cursor(tty, r.px[i], py);
1139 tty_repeat_space(tty, r.nx[i]);
1140 }
1141 }
1142
1143 /* Clear a line, adjusting to visible part of pane. */
1144 static void
1145 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1146 u_int px, u_int nx, u_int bg)
1147 {
1148 struct client *c = tty->client;
1149 u_int i, x, rx, ry;
1150
1151 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1152
1153 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1154 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1155 }
1156
1157 /* Clamp area position to visible part of pane. */
1158 static int
1159 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1160 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1161 u_int *ry)
1162 {
1163 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1164
1165 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1166 return (0);
1167
1168 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1169 /* All visible. */
1170 *i = 0;
1171 *x = ctx->xoff + px - ctx->wox;
1172 *rx = nx;
1173 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1174 /* Both left and right not visible. */
1175 *i = ctx->wox;
1176 *x = 0;
1177 *rx = ctx->wsx;
1178 } else if (xoff < ctx->wox) {
1179 /* Left not visible. */
1180 *i = ctx->wox - (ctx->xoff + px);
1181 *x = 0;
1182 *rx = nx - *i;
1183 } else {
1184 /* Right not visible. */
1185 *i = 0;
1186 *x = (ctx->xoff + px) - ctx->wox;
1187 *rx = ctx->wsx - *x;
1188 }
1189 if (*rx > nx)
1190 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1191
1192 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1193 /* All visible. */
1194 *j = 0;
1195 *y = ctx->yoff + py - ctx->woy;
1196 *ry = ny;
1197 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1198 /* Both top and bottom not visible. */
1199 *j = ctx->woy;
1200 *y = 0;
1201 *ry = ctx->wsy;
1202 } else if (yoff < ctx->woy) {
1203 /* Top not visible. */
1204 *j = ctx->woy - (ctx->yoff + py);
1205 *y = 0;
1206 *ry = ny - *j;
1207 } else {
1208 /* Bottom not visible. */
1209 *j = 0;
1210 *y = (ctx->yoff + py) - ctx->woy;
1211 *ry = ctx->wsy - *y;
1212 }
1213 if (*ry > ny)
1214 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1215
1216 return (1);
1217 }
1218
1219 /* Clear an area, adjusting to visible part of pane. */
1220 static void
1221 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1222 u_int ny, u_int px, u_int nx, u_int bg)
1223 {
1224 struct client *c = tty->client;
1225 u_int yy;
1226 char tmp[64];
1227
1228 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1229
1230 /* Nothing to clear. */
1231 if (nx == 0 || ny == 0)
1232 return;
1233
1234 /* If genuine BCE is available, can try escape sequences. */
1235 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1236 /* Use ED if clearing off the bottom of the terminal. */
1237 if (px == 0 &&
1238 px + nx >= tty->sx &&
1239 py + ny >= tty->sy &&
1240 tty_term_has(tty->term, TTYC_ED)) {
1241 tty_cursor(tty, 0, py);
1242 tty_putcode(tty, TTYC_ED);
1243 return;
1244 }
1245
1246 /*
1247 * On VT420 compatible terminals we can use DECFRA if the
1248 * background colour isn't default (because it doesn't work
1249 * after SGR 0).
1250 */
1251 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1252 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1253 py + 1, px + 1, py + ny, px + nx);
1254 tty_puts(tty, tmp);
1255 return;
1256 }
1257
1258 /* Full lines can be scrolled away to clear them. */
1259 if (px == 0 &&
1260 px + nx >= tty->sx &&
1261 ny > 2 &&
1262 tty_term_has(tty->term, TTYC_CSR) &&
1263 tty_term_has(tty->term, TTYC_INDN)) {
1264 tty_region(tty, py, py + ny - 1);
1265 tty_margin_off(tty);
1266 tty_putcode1(tty, TTYC_INDN, ny);
1267 return;
1268 }
1269
1270 /*
1271 * If margins are supported, can just scroll the area off to
1272 * clear it.
1273 */
1274 if (nx > 2 &&
1275 ny > 2 &&
1276 tty_term_has(tty->term, TTYC_CSR) &&
1277 tty_use_margin(tty) &&
1278 tty_term_has(tty->term, TTYC_INDN)) {
1279 tty_region(tty, py, py + ny - 1);
1280 tty_margin(tty, px, px + nx - 1);
1281 tty_putcode1(tty, TTYC_INDN, ny);
1282 return;
1283 }
1284 }
1285
1286 /* Couldn't use an escape sequence, loop over the lines. */
1287 for (yy = py; yy < py + ny; yy++)
1288 tty_clear_line(tty, defaults, yy, px, nx, bg);
1289 }
1290
1291 /* Clear an area in a pane. */
1292 static void
1293 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1294 u_int ny, u_int px, u_int nx, u_int bg)
1295 {
1296 u_int i, j, x, y, rx, ry;
1297
1298 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1299 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1300 }
1301
1302 static void
1303 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1304 {
1305 struct screen *s = ctx->s;
1306 u_int nx = ctx->sx, i, x, rx, ry;
1307
1308 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1309
1310 if (!ctx->bigger) {
1311 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1312 &ctx->defaults, ctx->palette);
1313 return;
1314 }
1315 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1316 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1317 ctx->palette);
1318 }
1319 }
1320
1321 static const struct grid_cell *
1322 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1323 {
1324 static struct grid_cell new;
1325 int c;
1326
1327 /* Characters less than 0x7f are always fine, no matter what. */
1328 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1329 return (gc);
1330
1331 /* UTF-8 terminal and a UTF-8 character - fine. */
1332 if (tty->client->flags & CLIENT_UTF8)
1333 return (gc);
1334 memcpy(&new, gc, sizeof new);
1335
1336 /* See if this can be mapped to an ACS character. */
1337 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1338 if (c != -1) {
1339 utf8_set(&new.data, c);
1340 new.attr |= GRID_ATTR_CHARSET;
1341 return (&new);
1342 }
1343
1344 /* Replace by the right number of underscores. */
1345 new.data.size = gc->data.width;
1346 if (new.data.size > UTF8_SIZE)
1347 new.data.size = UTF8_SIZE;
1348 memset(new.data.data, '_', new.data.size);
1349 return (&new);
1350 }
1351
1352 /*
1353 * Check if a single character is obstructed by the overlay and return a
1354 * boolean.
1355 */
1356 static int
1357 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1358 {
1359 struct overlay_ranges r;
1360
1361 /*
1362 * A unit width range will always return nx[2] == 0 from a check, even
1363 * with multiple overlays, so it's sufficient to check just the first
1364 * two entries.
1365 */
1366 tty_check_overlay_range(tty, px, py, 1, &r);
1367 if (r.nx[0] + r.nx[1] == 0)
1368 return (0);
1369 return (1);
1370 }
1371
1372 /* Return parts of the input range which are visible. */
1373 static void
1374 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1375 struct overlay_ranges *r)
1376 {
1377 struct client *c = tty->client;
1378
1379 if (c->overlay_check == NULL) {
1380 r->px[0] = px;
1381 r->nx[0] = nx;
1382 r->px[1] = 0;
1383 r->nx[1] = 0;
1384 r->px[2] = 0;
1385 r->nx[2] = 0;
1386 return;
1387 }
1388
1389 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1390 }
1391
1392 void
1393 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1394 u_int atx, u_int aty, const struct grid_cell *defaults,
1395 struct colour_palette *palette)
1396 {
1397 struct grid *gd = s->grid;
1398 struct grid_cell gc, last;
1399 const struct grid_cell *gcp;
1400 struct grid_line *gl;
1401 struct client *c = tty->client;
1402 struct overlay_ranges r;
1403 u_int i, j, ux, sx, width, hidden, eux, nxx;
1404 u_int cellsize;
1405 int flags, cleared = 0, wrapped = 0;
1406 char buf[512];
1407 size_t len;
1408
1409 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1410 px, py, nx, atx, aty);
1411 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1412 defaults->bg);
1413
1414 /*
1415 * py is the line in the screen to draw.
1416 * px is the start x and nx is the width to draw.
1417 * atx,aty is the line on the terminal to draw it.
1418 */
1419
1420 flags = (tty->flags & TTY_NOCURSOR);
1421 tty->flags |= TTY_NOCURSOR;
1422 tty_update_mode(tty, tty->mode, s);
1423
1424 tty_region_off(tty);
1425 tty_margin_off(tty);
1426
1427 /*
1428 * Clamp the width to cellsize - note this is not cellused, because
1429 * there may be empty background cells after it (from BCE).
1430 */
1431 sx = screen_size_x(s);
1432 if (nx > sx)
1433 nx = sx;
1434 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1435 if (sx > cellsize)
1436 sx = cellsize;
1437 if (sx > tty->sx)
1438 sx = tty->sx;
1439 if (sx > nx)
1440 sx = nx;
1441 ux = 0;
1442
1443 if (py == 0)
1444 gl = NULL;
1445 else
1446 gl = grid_get_line(gd, gd->hsize + py - 1);
1447 if (gl == NULL ||
1448 (~gl->flags & GRID_LINE_WRAPPED) ||
1449 atx != 0 ||
1450 tty->cx < tty->sx ||
1451 nx < tty->sx) {
1452 if (nx < tty->sx &&
1453 atx == 0 &&
1454 px + sx != nx &&
1455 tty_term_has(tty->term, TTYC_EL1) &&
1456 !tty_fake_bce(tty, defaults, 8) &&
1457 c->overlay_check == NULL) {
1458 tty_default_attributes(tty, defaults, palette, 8,
1459 s->hyperlinks);
1460 tty_cursor(tty, nx - 1, aty);
1461 tty_putcode(tty, TTYC_EL1);
1462 cleared = 1;
1463 }
1464 } else {
1465 log_debug("%s: wrapped line %u", __func__, aty);
1466 wrapped = 1;
1467 }
1468
1469 memcpy(&last, &grid_default_cell, sizeof last);
1470 len = 0;
1471 width = 0;
1472
1473 for (i = 0; i < sx; i++) {
1474 grid_view_get_cell(gd, px + i, py, &gc);
1475 gcp = tty_check_codeset(tty, &gc);
1476 if (len != 0 &&
1477 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1478 (gcp->attr & GRID_ATTR_CHARSET) ||
1479 gcp->flags != last.flags ||
1480 gcp->attr != last.attr ||
1481 gcp->fg != last.fg ||
1482 gcp->bg != last.bg ||
1483 gcp->us != last.us ||
1484 gcp->link != last.link ||
1485 ux + width + gcp->data.width > nx ||
1486 (sizeof buf) - len < gcp->data.size)) {
1487 tty_attributes(tty, &last, defaults, palette,
1488 s->hyperlinks);
1489 if (last.flags & GRID_FLAG_CLEARED) {
1490 log_debug("%s: %zu cleared", __func__, len);
1491 tty_clear_line(tty, defaults, aty, atx + ux,
1492 width, last.bg);
1493 } else {
1494 if (!wrapped || atx != 0 || ux != 0)
1495 tty_cursor(tty, atx + ux, aty);
1496 tty_putn(tty, buf, len, width);
1497 }
1498 ux += width;
1499
1500 len = 0;
1501 width = 0;
1502 wrapped = 0;
1503 }
1504
1505 if (gcp->flags & GRID_FLAG_SELECTED)
1506 screen_select_cell(s, &last, gcp);
1507 else
1508 memcpy(&last, gcp, sizeof last);
1509
1510 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1511 &r);
1512 hidden = 0;
1513 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1514 hidden += r.nx[j];
1515 hidden = gcp->data.width - hidden;
1516 if (hidden != 0 && hidden == gcp->data.width) {
1517 if (~gcp->flags & GRID_FLAG_PADDING)
1518 ux += gcp->data.width;
1519 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1520 if (~gcp->flags & GRID_FLAG_PADDING) {
1521 tty_attributes(tty, &last, defaults, palette,
1522 s->hyperlinks);
1523 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1524 if (r.nx[j] == 0)
1525 continue;
1526 /* Effective width drawn so far. */
1527 eux = r.px[j] - atx;
1528 if (eux < nx) {
1529 tty_cursor(tty, r.px[j], aty);
1530 nxx = nx - eux;
1531 if (r.nx[j] > nxx)
1532 r.nx[j] = nxx;
1533 tty_repeat_space(tty, r.nx[j]);
1534 ux = eux + r.nx[j];
1535 }
1536 }
1537 }
1538 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1539 tty_attributes(tty, &last, defaults, palette,
1540 s->hyperlinks);
1541 tty_cursor(tty, atx + ux, aty);
1542 for (j = 0; j < gcp->data.size; j++)
1543 tty_putc(tty, gcp->data.data[j]);
1544 ux += gcp->data.width;
1545 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1546 memcpy(buf + len, gcp->data.data, gcp->data.size);
1547 len += gcp->data.size;
1548 width += gcp->data.width;
1549 }
1550 }
1551 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1552 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1553 if (last.flags & GRID_FLAG_CLEARED) {
1554 log_debug("%s: %zu cleared (end)", __func__, len);
1555 tty_clear_line(tty, defaults, aty, atx + ux, width,
1556 last.bg);
1557 } else {
1558 if (!wrapped || atx != 0 || ux != 0)
1559 tty_cursor(tty, atx + ux, aty);
1560 tty_putn(tty, buf, len, width);
1561 }
1562 ux += width;
1563 }
1564
1565 if (!cleared && ux < nx) {
1566 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1567 nx - ux, len);
1568 tty_default_attributes(tty, defaults, palette, 8,
1569 s->hyperlinks);
1570 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1571 }
1572
1573 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1574 tty_update_mode(tty, tty->mode, s);
1575 }
1576
1577 void
1578 tty_sync_start(struct tty *tty)
1579 {
1580 if (tty->flags & TTY_BLOCK)
1581 return;
1582 if (tty->flags & TTY_SYNCING)
1583 return;
1584 tty->flags |= TTY_SYNCING;
1585
1586 if (tty_term_has(tty->term, TTYC_SYNC)) {
1587 log_debug("%s sync start", tty->client->name);
1588 tty_putcode1(tty, TTYC_SYNC, 1);
1589 }
1590 }
1591
1592 void
1593 tty_sync_end(struct tty *tty)
1594 {
1595 if (tty->flags & TTY_BLOCK)
1596 return;
1597 if (~tty->flags & TTY_SYNCING)
1598 return;
1599 tty->flags &= ~TTY_SYNCING;
1600
1601 if (tty_term_has(tty->term, TTYC_SYNC)) {
1602 log_debug("%s sync end", tty->client->name);
1603 tty_putcode1(tty, TTYC_SYNC, 2);
1604 }
1605 }
1606
1607 static int
1608 tty_client_ready(const struct tty_ctx *ctx, struct client *c)
1609 {
1610 if (c->session == NULL || c->tty.term == NULL)
1611 return (0);
1612 if (c->flags & CLIENT_SUSPENDED)
1613 return (0);
1614
1615 /*
1616 * If invisible panes are allowed (used for passthrough), don't care if
1617 * redrawing or frozen.
1618 */
1619 if (ctx->allow_invisible_panes)
1620 return (1);
1621
1622 if (c->flags & CLIENT_REDRAWWINDOW)
1623 return (0);
1624 if (c->tty.flags & TTY_FREEZE)
1625 return (0);
1626 return (1);
1627 }
1628
1629 void
1630 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1631 struct tty_ctx *ctx)
1632 {
1633 struct client *c;
1634 int state;
1635
1636 if (ctx->set_client_cb == NULL)
1637 return;
1638 TAILQ_FOREACH(c, &clients, entry) {
1639 if (tty_client_ready(ctx, c)) {
1640 state = ctx->set_client_cb(ctx, c);
1641 if (state == -1)
1642 break;
1643 if (state == 0)
1644 continue;
1645 cmdfn(&c->tty, ctx);
1646 }
1647 }
1648 }
1649
1650 void
1651 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1652 {
1653 struct client *c = tty->client;
1654
1655 if (ctx->bigger ||
1656 !tty_full_width(tty, ctx) ||
1657 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1658 (!tty_term_has(tty->term, TTYC_ICH) &&
1659 !tty_term_has(tty->term, TTYC_ICH1)) ||
1660 c->overlay_check != NULL) {
1661 tty_draw_pane(tty, ctx, ctx->ocy);
1662 return;
1663 }
1664
1665 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1666 ctx->s->hyperlinks);
1667
1668 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1669
1670 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1671 }
1672
1673 void
1674 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1675 {
1676 struct client *c = tty->client;
1677
1678 if (ctx->bigger ||
1679 !tty_full_width(tty, ctx) ||
1680 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1681 (!tty_term_has(tty->term, TTYC_DCH) &&
1682 !tty_term_has(tty->term, TTYC_DCH1)) ||
1683 c->overlay_check != NULL) {
1684 tty_draw_pane(tty, ctx, ctx->ocy);
1685 return;
1686 }
1687
1688 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1689 ctx->s->hyperlinks);
1690
1691 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1692
1693 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1694 }
1695
1696 void
1697 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1698 {
1699 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1700 ctx->s->hyperlinks);
1701
1702 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1703 }
1704
1705 void
1706 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1707 {
1708 struct client *c = tty->client;
1709
1710 if (ctx->bigger ||
1711 !tty_full_width(tty, ctx) ||
1712 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1713 !tty_term_has(tty->term, TTYC_CSR) ||
1714 !tty_term_has(tty->term, TTYC_IL1) ||
1715 ctx->sx == 1 ||
1716 ctx->sy == 1 ||
1717 c->overlay_check != NULL) {
1718 tty_redraw_region(tty, ctx);
1719 return;
1720 }
1721
1722 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1723 ctx->s->hyperlinks);
1724
1725 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1726 tty_margin_off(tty);
1727 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1728
1729 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1730 tty->cx = tty->cy = UINT_MAX;
1731 }
1732
1733 void
1734 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1735 {
1736 struct client *c = tty->client;
1737
1738 if (ctx->bigger ||
1739 !tty_full_width(tty, ctx) ||
1740 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1741 !tty_term_has(tty->term, TTYC_CSR) ||
1742 !tty_term_has(tty->term, TTYC_DL1) ||
1743 ctx->sx == 1 ||
1744 ctx->sy == 1 ||
1745 c->overlay_check != NULL) {
1746 tty_redraw_region(tty, ctx);
1747 return;
1748 }
1749
1750 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1751 ctx->s->hyperlinks);
1752
1753 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1754 tty_margin_off(tty);
1755 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1756
1757 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1758 tty->cx = tty->cy = UINT_MAX;
1759 }
1760
1761 void
1762 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1763 {
1764 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1765 ctx->s->hyperlinks);
1766
1767 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1768 }
1769
1770 void
1771 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1772 {
1773 u_int nx = ctx->sx - ctx->ocx;
1774
1775 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1776 ctx->s->hyperlinks);
1777
1778 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1779 }
1780
1781 void
1782 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1783 {
1784 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1785 ctx->s->hyperlinks);
1786
1787 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1788 }
1789
1790 void
1791 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1792 {
1793 struct client *c = tty->client;
1794
1795 if (ctx->ocy != ctx->orupper)
1796 return;
1797
1798 if (ctx->bigger ||
1799 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1800 tty_fake_bce(tty, &ctx->defaults, 8) ||
1801 !tty_term_has(tty->term, TTYC_CSR) ||
1802 (!tty_term_has(tty->term, TTYC_RI) &&
1803 !tty_term_has(tty->term, TTYC_RIN)) ||
1804 ctx->sx == 1 ||
1805 ctx->sy == 1 ||
1806 c->overlay_check != NULL) {
1807 tty_redraw_region(tty, ctx);
1808 return;
1809 }
1810
1811 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1812 ctx->s->hyperlinks);
1813
1814 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1815 tty_margin_pane(tty, ctx);
1816 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1817
1818 if (tty_term_has(tty->term, TTYC_RI))
1819 tty_putcode(tty, TTYC_RI);
1820 else
1821 tty_putcode1(tty, TTYC_RIN, 1);
1822 }
1823
1824 void
1825 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1826 {
1827 struct client *c = tty->client;
1828
1829 if (ctx->ocy != ctx->orlower)
1830 return;
1831
1832 if (ctx->bigger ||
1833 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1834 tty_fake_bce(tty, &ctx->defaults, 8) ||
1835 !tty_term_has(tty->term, TTYC_CSR) ||
1836 ctx->sx == 1 ||
1837 ctx->sy == 1 ||
1838 c->overlay_check != NULL) {
1839 tty_redraw_region(tty, ctx);
1840 return;
1841 }
1842
1843 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1844 ctx->s->hyperlinks);
1845
1846 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1847 tty_margin_pane(tty, ctx);
1848
1849 /*
1850 * If we want to wrap a pane while using margins, the cursor needs to
1851 * be exactly on the right of the region. If the cursor is entirely off
1852 * the edge - move it back to the right. Some terminals are funny about
1853 * this and insert extra spaces, so only use the right if margins are
1854 * enabled.
1855 */
1856 if (ctx->xoff + ctx->ocx > tty->rright) {
1857 if (!tty_use_margin(tty))
1858 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1859 else
1860 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1861 } else
1862 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1863
1864 tty_putc(tty, '\n');
1865 }
1866
1867 void
1868 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1869 {
1870 struct client *c = tty->client;
1871 u_int i;
1872
1873 if (ctx->bigger ||
1874 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1875 tty_fake_bce(tty, &ctx->defaults, 8) ||
1876 !tty_term_has(tty->term, TTYC_CSR) ||
1877 ctx->sx == 1 ||
1878 ctx->sy == 1 ||
1879 c->overlay_check != NULL) {
1880 tty_redraw_region(tty, ctx);
1881 return;
1882 }
1883
1884 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1885 ctx->s->hyperlinks);
1886
1887 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1888 tty_margin_pane(tty, ctx);
1889
1890 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1891 if (!tty_use_margin(tty))
1892 tty_cursor(tty, 0, tty->rlower);
1893 else
1894 tty_cursor(tty, tty->rright, tty->rlower);
1895 for (i = 0; i < ctx->num; i++)
1896 tty_putc(tty, '\n');
1897 } else {
1898 if (tty->cy == UINT_MAX)
1899 tty_cursor(tty, 0, 0);
1900 else
1901 tty_cursor(tty, 0, tty->cy);
1902 tty_putcode1(tty, TTYC_INDN, ctx->num);
1903 }
1904 }
1905
1906 void
1907 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1908 {
1909 u_int i;
1910 struct client *c = tty->client;
1911
1912 if (ctx->bigger ||
1913 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1914 tty_fake_bce(tty, &ctx->defaults, 8) ||
1915 !tty_term_has(tty->term, TTYC_CSR) ||
1916 (!tty_term_has(tty->term, TTYC_RI) &&
1917 !tty_term_has(tty->term, TTYC_RIN)) ||
1918 ctx->sx == 1 ||
1919 ctx->sy == 1 ||
1920 c->overlay_check != NULL) {
1921 tty_redraw_region(tty, ctx);
1922 return;
1923 }
1924
1925 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1926 ctx->s->hyperlinks);
1927
1928 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1929 tty_margin_pane(tty, ctx);
1930 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1931
1932 if (tty_term_has(tty->term, TTYC_RIN))
1933 tty_putcode1(tty, TTYC_RIN, ctx->num);
1934 else {
1935 for (i = 0; i < ctx->num; i++)
1936 tty_putcode(tty, TTYC_RI);
1937 }
1938 }
1939
1940 void
1941 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1942 {
1943 u_int px, py, nx, ny;
1944
1945 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1946 ctx->s->hyperlinks);
1947
1948 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1949 tty_margin_off(tty);
1950
1951 px = 0;
1952 nx = ctx->sx;
1953 py = ctx->ocy + 1;
1954 ny = ctx->sy - ctx->ocy - 1;
1955
1956 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1957
1958 px = ctx->ocx;
1959 nx = ctx->sx - ctx->ocx;
1960 py = ctx->ocy;
1961
1962 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1963 }
1964
1965 void
1966 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1967 {
1968 u_int px, py, nx, ny;
1969
1970 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1971 ctx->s->hyperlinks);
1972
1973 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1974 tty_margin_off(tty);
1975
1976 px = 0;
1977 nx = ctx->sx;
1978 py = 0;
1979 ny = ctx->ocy;
1980
1981 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1982
1983 px = 0;
1984 nx = ctx->ocx + 1;
1985 py = ctx->ocy;
1986
1987 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1988 }
1989
1990 void
1991 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1992 {
1993 u_int px, py, nx, ny;
1994
1995 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1996 ctx->s->hyperlinks);
1997
1998 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1999 tty_margin_off(tty);
2000
2001 px = 0;
2002 nx = ctx->sx;
2003 py = 0;
2004 ny = ctx->sy;
2005
2006 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2007 }
2008
2009 void
2010 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2011 {
2012 u_int i, j;
2013
2014 if (ctx->bigger) {
2015 ctx->redraw_cb(ctx);
2016 return;
2017 }
2018
2019 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2020 ctx->s->hyperlinks);
2021
2022 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2023 tty_margin_off(tty);
2024
2025 for (j = 0; j < ctx->sy; j++) {
2026 tty_cursor_pane(tty, ctx, 0, j);
2027 for (i = 0; i < ctx->sx; i++)
2028 tty_putc(tty, 'E');
2029 }
2030 }
2031
2032 void
2033 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2034 {
2035 const struct grid_cell *gcp = ctx->cell;
2036 struct screen *s = ctx->s;
2037 struct overlay_ranges r;
2038 u_int px, py, i, vis = 0;
2039
2040 px = ctx->xoff + ctx->ocx - ctx->wox;
2041 py = ctx->yoff + ctx->ocy - ctx->woy;
2042 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2043 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2044 return;
2045
2046 /* Handle partially obstructed wide characters. */
2047 if (gcp->data.width > 1) {
2048 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2049 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2050 vis += r.nx[i];
2051 if (vis < gcp->data.width) {
2052 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2053 px, py, &ctx->defaults, ctx->palette);
2054 return;
2055 }
2056 }
2057
2058 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2059 ctx->ocy == ctx->orlower &&
2060 tty_full_width(tty, ctx))
2061 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2062
2063 tty_margin_off(tty);
2064 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2065
2066 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2067 ctx->s->hyperlinks);
2068 }
2069
2070 void
2071 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2072 {
2073 struct overlay_ranges r;
2074 u_int i, px, py, cx;
2075 char *cp = ctx->ptr;
2076
2077 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2078 return;
2079
2080 if (ctx->bigger &&
2081 (ctx->xoff + ctx->ocx < ctx->wox ||
2082 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2083 if (!ctx->wrapped ||
2084 !tty_full_width(tty, ctx) ||
2085 (tty->term->flags & TERM_NOAM) ||
2086 ctx->xoff + ctx->ocx != 0 ||
2087 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2088 tty->cx < tty->sx ||
2089 tty->cy == tty->rlower)
2090 tty_draw_pane(tty, ctx, ctx->ocy);
2091 else
2092 ctx->redraw_cb(ctx);
2093 return;
2094 }
2095
2096 tty_margin_off(tty);
2097 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2098 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2099
2100 /* Get tty position from pane position for overlay check. */
2101 px = ctx->xoff + ctx->ocx - ctx->wox;
2102 py = ctx->yoff + ctx->ocy - ctx->woy;
2103
2104 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2105 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2106 if (r.nx[i] == 0)
2107 continue;
2108 /* Convert back to pane position for printing. */
2109 cx = r.px[i] - ctx->xoff + ctx->wox;
2110 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2111 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2112 }
2113 }
2114
2115 void
2116 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2117 {
2118 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2119 }
2120
2121 void
2122 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2123 size_t len)
2124 {
2125 char *encoded;
2126 size_t size;
2127
2128 if (~tty->flags & TTY_STARTED)
2129 return;
2130 if (!tty_term_has(tty->term, TTYC_MS))
2131 return;
2132
2133 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2134 encoded = xmalloc(size);
2135
2136 b64_ntop(buf, len, encoded, size);
2137 tty->flags |= TTY_NOBLOCK;
2138 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded);
2139
2140 free(encoded);
2141 }
2142
2143 void
2144 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2145 {
2146 tty->flags |= TTY_NOBLOCK;
2147 tty_add(tty, ctx->ptr, ctx->num);
2148 tty_invalidate(tty);
2149 }
2150
2151 void
2152 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2153 {
2154 if (ctx->num == 0x11) {
2155 /*
2156 * This is an overlay and a command that moves the cursor so
2157 * start synchronized updates.
2158 */
2159 tty_sync_start(tty);
2160 } else if (~ctx->num & 0x10) {
2161 /*
2162 * This is a pane. If there is an overlay, always start;
2163 * otherwise, only if requested.
2164 */
2165 if (ctx->num || tty->client->overlay_draw != NULL)
2166 tty_sync_start(tty);
2167 }
2168 }
2169
2170 void
2171 tty_cell(struct tty *tty, const struct grid_cell *gc,
2172 const struct grid_cell *defaults, struct colour_palette *palette,
2173 struct hyperlinks *hl)
2174 {
2175 const struct grid_cell *gcp;
2176
2177 /* Skip last character if terminal is stupid. */
2178 if ((tty->term->flags & TERM_NOAM) &&
2179 tty->cy == tty->sy - 1 &&
2180 tty->cx == tty->sx - 1)
2181 return;
2182
2183 /* If this is a padding character, do nothing. */
2184 if (gc->flags & GRID_FLAG_PADDING)
2185 return;
2186
2187 /* Check the output codeset and apply attributes. */
2188 gcp = tty_check_codeset(tty, gc);
2189 tty_attributes(tty, gcp, defaults, palette, hl);
2190
2191 /* If it is a single character, write with putc to handle ACS. */
2192 if (gcp->data.size == 1) {
2193 tty_attributes(tty, gcp, defaults, palette, hl);
2194 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2195 return;
2196 tty_putc(tty, *gcp->data.data);
2197 return;
2198 }
2199
2200 /* Write the data. */
2201 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2202 }
2203
2204 void
2205 tty_reset(struct tty *tty)
2206 {
2207 struct grid_cell *gc = &tty->cell;
2208
2209 if (!grid_cells_equal(gc, &grid_default_cell)) {
2210 if (gc->link != 0)
2211 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2212 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2213 tty_putcode(tty, TTYC_RMACS);
2214 tty_putcode(tty, TTYC_SGR0);
2215 memcpy(gc, &grid_default_cell, sizeof *gc);
2216 }
2217 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2218 }
2219
2220 static void
2221 tty_invalidate(struct tty *tty)
2222 {
2223 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2224 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2225
2226 tty->cx = tty->cy = UINT_MAX;
2227 tty->rupper = tty->rleft = UINT_MAX;
2228 tty->rlower = tty->rright = UINT_MAX;
2229
2230 if (tty->flags & TTY_STARTED) {
2231 if (tty_use_margin(tty))
2232 tty_putcode(tty, TTYC_ENMG);
2233 tty_putcode(tty, TTYC_SGR0);
2234
2235 tty->mode = ALL_MODES;
2236 tty_update_mode(tty, MODE_CURSOR, NULL);
2237
2238 tty_cursor(tty, 0, 0);
2239 tty_region_off(tty);
2240 tty_margin_off(tty);
2241 } else
2242 tty->mode = MODE_CURSOR;
2243 }
2244
2245 /* Turn off margin. */
2246 void
2247 tty_region_off(struct tty *tty)
2248 {
2249 tty_region(tty, 0, tty->sy - 1);
2250 }
2251
2252 /* Set region inside pane. */
2253 static void
2254 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2255 u_int rlower)
2256 {
2257 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2258 ctx->yoff + rlower - ctx->woy);
2259 }
2260
2261 /* Set region at absolute position. */
2262 static void
2263 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2264 {
2265 if (tty->rlower == rlower && tty->rupper == rupper)
2266 return;
2267 if (!tty_term_has(tty->term, TTYC_CSR))
2268 return;
2269
2270 tty->rupper = rupper;
2271 tty->rlower = rlower;
2272
2273 /*
2274 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2275 * 0,0 if it is beyond the last column (they do not reset their wrap
2276 * flag so further output causes a line feed). As a workaround, do an
2277 * explicit move to 0 first.
2278 */
2279 if (tty->cx >= tty->sx) {
2280 if (tty->cy == UINT_MAX)
2281 tty_cursor(tty, 0, 0);
2282 else
2283 tty_cursor(tty, 0, tty->cy);
2284 }
2285
2286 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2287 tty->cx = tty->cy = UINT_MAX;
2288 }
2289
2290 /* Turn off margin. */
2291 void
2292 tty_margin_off(struct tty *tty)
2293 {
2294 tty_margin(tty, 0, tty->sx - 1);
2295 }
2296
2297 /* Set margin inside pane. */
2298 static void
2299 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2300 {
2301 tty_margin(tty, ctx->xoff - ctx->wox,
2302 ctx->xoff + ctx->sx - 1 - ctx->wox);
2303 }
2304
2305 /* Set margin at absolute position. */
2306 static void
2307 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2308 {
2309 if (!tty_use_margin(tty))
2310 return;
2311 if (tty->rleft == rleft && tty->rright == rright)
2312 return;
2313
2314 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2315
2316 tty->rleft = rleft;
2317 tty->rright = rright;
2318
2319 if (rleft == 0 && rright == tty->sx - 1)
2320 tty_putcode(tty, TTYC_CLMG);
2321 else
2322 tty_putcode2(tty, TTYC_CMG, rleft, rright);
2323 tty->cx = tty->cy = UINT_MAX;
2324 }
2325
2326 /*
2327 * Move the cursor, unless it would wrap itself when the next character is
2328 * printed.
2329 */
2330 static void
2331 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2332 u_int cx, u_int cy)
2333 {
2334 if (!ctx->wrapped ||
2335 !tty_full_width(tty, ctx) ||
2336 (tty->term->flags & TERM_NOAM) ||
2337 ctx->xoff + cx != 0 ||
2338 ctx->yoff + cy != tty->cy + 1 ||
2339 tty->cx < tty->sx ||
2340 tty->cy == tty->rlower)
2341 tty_cursor_pane(tty, ctx, cx, cy);
2342 else
2343 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2344 }
2345
2346 /* Move cursor inside pane. */
2347 static void
2348 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2349 {
2350 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2351 }
2352
2353 /* Move cursor to absolute position. */
2354 void
2355 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2356 {
2357 struct tty_term *term = tty->term;
2358 u_int thisx, thisy;
2359 int change;
2360
2361 if (tty->flags & TTY_BLOCK)
2362 return;
2363
2364 thisx = tty->cx;
2365 thisy = tty->cy;
2366
2367 /*
2368 * If in the automargin space, and want to be there, do not move.
2369 * Otherwise, force the cursor to be in range (and complain).
2370 */
2371 if (cx == thisx && cy == thisy && cx == tty->sx)
2372 return;
2373 if (cx > tty->sx - 1) {
2374 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2375 cx = tty->sx - 1;
2376 }
2377
2378 /* No change. */
2379 if (cx == thisx && cy == thisy)
2380 return;
2381
2382 /* Currently at the very end of the line - use absolute movement. */
2383 if (thisx > tty->sx - 1)
2384 goto absolute;
2385
2386 /* Move to home position (0, 0). */
2387 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2388 tty_putcode(tty, TTYC_HOME);
2389 goto out;
2390 }
2391
2392 /* Zero on the next line. */
2393 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2394 (!tty_use_margin(tty) || tty->rleft == 0)) {
2395 tty_putc(tty, '\r');
2396 tty_putc(tty, '\n');
2397 goto out;
2398 }
2399
2400 /* Moving column or row. */
2401 if (cy == thisy) {
2402 /*
2403 * Moving column only, row staying the same.
2404 */
2405
2406 /* To left edge. */
2407 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2408 tty_putc(tty, '\r');
2409 goto out;
2410 }
2411
2412 /* One to the left. */
2413 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2414 tty_putcode(tty, TTYC_CUB1);
2415 goto out;
2416 }
2417
2418 /* One to the right. */
2419 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2420 tty_putcode(tty, TTYC_CUF1);
2421 goto out;
2422 }
2423
2424 /* Calculate difference. */
2425 change = thisx - cx; /* +ve left, -ve right */
2426
2427 /*
2428 * Use HPA if change is larger than absolute, otherwise move
2429 * the cursor with CUB/CUF.
2430 */
2431 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2432 tty_putcode1(tty, TTYC_HPA, cx);
2433 goto out;
2434 } else if (change > 0 &&
2435 tty_term_has(term, TTYC_CUB) &&
2436 !tty_use_margin(tty)) {
2437 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2438 tty_putcode(tty, TTYC_CUB1);
2439 tty_putcode(tty, TTYC_CUB1);
2440 goto out;
2441 }
2442 tty_putcode1(tty, TTYC_CUB, change);
2443 goto out;
2444 } else if (change < 0 &&
2445 tty_term_has(term, TTYC_CUF) &&
2446 !tty_use_margin(tty)) {
2447 tty_putcode1(tty, TTYC_CUF, -change);
2448 goto out;
2449 }
2450 } else if (cx == thisx) {
2451 /*
2452 * Moving row only, column staying the same.
2453 */
2454
2455 /* One above. */
2456 if (thisy != tty->rupper &&
2457 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2458 tty_putcode(tty, TTYC_CUU1);
2459 goto out;
2460 }
2461
2462 /* One below. */
2463 if (thisy != tty->rlower &&
2464 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2465 tty_putcode(tty, TTYC_CUD1);
2466 goto out;
2467 }
2468
2469 /* Calculate difference. */
2470 change = thisy - cy; /* +ve up, -ve down */
2471
2472 /*
2473 * Try to use VPA if change is larger than absolute or if this
2474 * change would cross the scroll region, otherwise use CUU/CUD.
2475 */
2476 if ((u_int) abs(change) > cy ||
2477 (change < 0 && cy - change > tty->rlower) ||
2478 (change > 0 && cy - change < tty->rupper)) {
2479 if (tty_term_has(term, TTYC_VPA)) {
2480 tty_putcode1(tty, TTYC_VPA, cy);
2481 goto out;
2482 }
2483 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2484 tty_putcode1(tty, TTYC_CUU, change);
2485 goto out;
2486 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2487 tty_putcode1(tty, TTYC_CUD, -change);
2488 goto out;
2489 }
2490 }
2491
2492 absolute:
2493 /* Absolute movement. */
2494 tty_putcode2(tty, TTYC_CUP, cy, cx);
2495
2496 out:
2497 tty->cx = cx;
2498 tty->cy = cy;
2499 }
2500
2501 static void
2502 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2503 struct hyperlinks *hl)
2504 {
2505 const char *uri, *id;
2506
2507 if (gc->link == tty->cell.link)
2508 return;
2509 tty->cell.link = gc->link;
2510
2511 if (hl == NULL)
2512 return;
2513
2514 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2515 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2516 else
2517 tty_putcode_ptr2(tty, TTYC_HLS, id, uri);
2518 }
2519
2520 void
2521 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2522 const struct grid_cell *defaults, struct colour_palette *palette,
2523 struct hyperlinks *hl)
2524 {
2525 struct grid_cell *tc = &tty->cell, gc2;
2526 int changed;
2527
2528 /* Copy cell and update default colours. */
2529 memcpy(&gc2, gc, sizeof gc2);
2530 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2531 if (gc2.fg == 8)
2532 gc2.fg = defaults->fg;
2533 if (gc2.bg == 8)
2534 gc2.bg = defaults->bg;
2535 }
2536
2537 /* Ignore cell if it is the same as the last one. */
2538 if (gc2.attr == tty->last_cell.attr &&
2539 gc2.fg == tty->last_cell.fg &&
2540 gc2.bg == tty->last_cell.bg &&
2541 gc2.us == tty->last_cell.us &&
2542 gc2.link == tty->last_cell.link)
2543 return;
2544
2545 /*
2546 * If no setab, try to use the reverse attribute as a best-effort for a
2547 * non-default background. This is a bit of a hack but it doesn't do
2548 * any serious harm and makes a couple of applications happier.
2549 */
2550 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2551 if (gc2.attr & GRID_ATTR_REVERSE) {
2552 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2553 gc2.attr &= ~GRID_ATTR_REVERSE;
2554 } else {
2555 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2556 gc2.attr |= GRID_ATTR_REVERSE;
2557 }
2558 }
2559
2560 /* Fix up the colours if necessary. */
2561 tty_check_fg(tty, palette, &gc2);
2562 tty_check_bg(tty, palette, &gc2);
2563 tty_check_us(tty, palette, &gc2);
2564
2565 /*
2566 * If any bits are being cleared or the underline colour is now default,
2567 * reset everything.
2568 */
2569 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2570 tty_reset(tty);
2571
2572 /*
2573 * Set the colours. This may call tty_reset() (so it comes next) and
2574 * may add to (NOT remove) the desired attributes.
2575 */
2576 tty_colours(tty, &gc2);
2577
2578 /* Filter out attribute bits already set. */
2579 changed = gc2.attr & ~tc->attr;
2580 tc->attr = gc2.attr;
2581
2582 /* Set the attributes. */
2583 if (changed & GRID_ATTR_BRIGHT)
2584 tty_putcode(tty, TTYC_BOLD);
2585 if (changed & GRID_ATTR_DIM)
2586 tty_putcode(tty, TTYC_DIM);
2587 if (changed & GRID_ATTR_ITALICS)
2588 tty_set_italics(tty);
2589 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2590 if ((changed & GRID_ATTR_UNDERSCORE) ||
2591 !tty_term_has(tty->term, TTYC_SMULX))
2592 tty_putcode(tty, TTYC_SMUL);
2593 else if (changed & GRID_ATTR_UNDERSCORE_2)
2594 tty_putcode1(tty, TTYC_SMULX, 2);
2595 else if (changed & GRID_ATTR_UNDERSCORE_3)
2596 tty_putcode1(tty, TTYC_SMULX, 3);
2597 else if (changed & GRID_ATTR_UNDERSCORE_4)
2598 tty_putcode1(tty, TTYC_SMULX, 4);
2599 else if (changed & GRID_ATTR_UNDERSCORE_5)
2600 tty_putcode1(tty, TTYC_SMULX, 5);
2601 }
2602 if (changed & GRID_ATTR_BLINK)
2603 tty_putcode(tty, TTYC_BLINK);
2604 if (changed & GRID_ATTR_REVERSE) {
2605 if (tty_term_has(tty->term, TTYC_REV))
2606 tty_putcode(tty, TTYC_REV);
2607 else if (tty_term_has(tty->term, TTYC_SMSO))
2608 tty_putcode(tty, TTYC_SMSO);
2609 }
2610 if (changed & GRID_ATTR_HIDDEN)
2611 tty_putcode(tty, TTYC_INVIS);
2612 if (changed & GRID_ATTR_STRIKETHROUGH)
2613 tty_putcode(tty, TTYC_SMXX);
2614 if (changed & GRID_ATTR_OVERLINE)
2615 tty_putcode(tty, TTYC_SMOL);
2616 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2617 tty_putcode(tty, TTYC_SMACS);
2618
2619 /* Set hyperlink if any. */
2620 tty_hyperlink(tty, gc, hl);
2621
2622 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2623 }
2624
2625 static void
2626 tty_colours(struct tty *tty, const struct grid_cell *gc)
2627 {
2628 struct grid_cell *tc = &tty->cell;
2629 int have_ax;
2630
2631 /* No changes? Nothing is necessary. */
2632 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2633 return;
2634
2635 /*
2636 * Is either the default colour? This is handled specially because the
2637 * best solution might be to reset both colours to default, in which
2638 * case if only one is default need to fall onward to set the other
2639 * colour.
2640 */
2641 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2642 /*
2643 * If don't have AX but do have op, send sgr0 (op can't
2644 * actually be used because it is sometimes the same as sgr0
2645 * and sometimes isn't). This resets both colours to default.
2646 *
2647 * Otherwise, try to set the default colour only as needed.
2648 */
2649 have_ax = tty_term_flag(tty->term, TTYC_AX);
2650 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2651 tty_reset(tty);
2652 else {
2653 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2654 if (have_ax)
2655 tty_puts(tty, "\033[39m");
2656 else if (tc->fg != 7)
2657 tty_putcode1(tty, TTYC_SETAF, 7);
2658 tc->fg = gc->fg;
2659 }
2660 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2661 if (have_ax)
2662 tty_puts(tty, "\033[49m");
2663 else if (tc->bg != 0)
2664 tty_putcode1(tty, TTYC_SETAB, 0);
2665 tc->bg = gc->bg;
2666 }
2667 }
2668 }
2669
2670 /* Set the foreground colour. */
2671 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2672 tty_colours_fg(tty, gc);
2673
2674 /*
2675 * Set the background colour. This must come after the foreground as
2676 * tty_colour_fg() can call tty_reset().
2677 */
2678 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2679 tty_colours_bg(tty, gc);
2680
2681 /* Set the underscore colour. */
2682 if (gc->us != tc->us)
2683 tty_colours_us(tty, gc);
2684 }
2685
2686 static void
2687 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2688 struct grid_cell *gc)
2689 {
2690 u_char r, g, b;
2691 u_int colours;
2692 int c;
2693
2694 /*
2695 * Perform substitution if this pane has a palette. If the bright
2696 * attribute is set and Nobr is not present, use the bright entry in
2697 * the palette by changing to the aixterm colour
2698 */
2699 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2700 c = gc->fg;
2701 if (c < 8 &&
2702 gc->attr & GRID_ATTR_BRIGHT &&
2703 !tty_term_has(tty->term, TTYC_NOBR))
2704 c += 90;
2705 if ((c = colour_palette_get(palette, c)) != -1)
2706 gc->fg = c;
2707 }
2708
2709 /* Is this a 24-bit colour? */
2710 if (gc->fg & COLOUR_FLAG_RGB) {
2711 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2712 if (tty->term->flags & TERM_RGBCOLOURS)
2713 return;
2714 colour_split_rgb(gc->fg, &r, &g, &b);
2715 gc->fg = colour_find_rgb(r, g, b);
2716 }
2717
2718 /* How many colours does this terminal have? */
2719 if (tty->term->flags & TERM_256COLOURS)
2720 colours = 256;
2721 else
2722 colours = tty_term_number(tty->term, TTYC_COLORS);
2723
2724 /* Is this a 256-colour colour? */
2725 if (gc->fg & COLOUR_FLAG_256) {
2726 /* And not a 256 colour mode? */
2727 if (colours < 256) {
2728 gc->fg = colour_256to16(gc->fg);
2729 if (gc->fg & 8) {
2730 gc->fg &= 7;
2731 if (colours >= 16)
2732 gc->fg += 90;
2733 }
2734 }
2735 return;
2736 }
2737
2738 /* Is this an aixterm colour? */
2739 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2740 gc->fg -= 90;
2741 gc->attr |= GRID_ATTR_BRIGHT;
2742 }
2743 }
2744
2745 static void
2746 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2747 struct grid_cell *gc)
2748 {
2749 u_char r, g, b;
2750 u_int colours;
2751 int c;
2752
2753 /* Perform substitution if this pane has a palette. */
2754 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2755 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2756 gc->bg = c;
2757 }
2758
2759 /* Is this a 24-bit colour? */
2760 if (gc->bg & COLOUR_FLAG_RGB) {
2761 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2762 if (tty->term->flags & TERM_RGBCOLOURS)
2763 return;
2764 colour_split_rgb(gc->bg, &r, &g, &b);
2765 gc->bg = colour_find_rgb(r, g, b);
2766 }
2767
2768 /* How many colours does this terminal have? */
2769 if (tty->term->flags & TERM_256COLOURS)
2770 colours = 256;
2771 else
2772 colours = tty_term_number(tty->term, TTYC_COLORS);
2773
2774 /* Is this a 256-colour colour? */
2775 if (gc->bg & COLOUR_FLAG_256) {
2776 /*
2777 * And not a 256 colour mode? Translate to 16-colour
2778 * palette. Bold background doesn't exist portably, so just
2779 * discard the bold bit if set.
2780 */
2781 if (colours < 256) {
2782 gc->bg = colour_256to16(gc->bg);
2783 if (gc->bg & 8) {
2784 gc->bg &= 7;
2785 if (colours >= 16)
2786 gc->bg += 90;
2787 }
2788 }
2789 return;
2790 }
2791
2792 /* Is this an aixterm colour? */
2793 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2794 gc->bg -= 90;
2795 }
2796
2797 static void
2798 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2799 struct grid_cell *gc)
2800 {
2801 int c;
2802
2803 /* Perform substitution if this pane has a palette. */
2804 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2805 if ((c = colour_palette_get(palette, gc->us)) != -1)
2806 gc->us = c;
2807 }
2808
2809 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2810 if (gc->us & COLOUR_FLAG_256)
2811 gc->us = colour_256toRGB (gc->us);
2812 }
2813
2814 static void
2815 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2816 {
2817 struct grid_cell *tc = &tty->cell;
2818 char s[32];
2819
2820 /* Is this a 24-bit or 256-colour colour? */
2821 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2822 if (tty_try_colour(tty, gc->fg, "38") == 0)
2823 goto save;
2824 /* Should not get here, already converted in tty_check_fg. */
2825 return;
2826 }
2827
2828 /* Is this an aixterm bright colour? */
2829 if (gc->fg >= 90 && gc->fg <= 97) {
2830 if (tty->term->flags & TERM_256COLOURS) {
2831 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2832 tty_puts(tty, s);
2833 } else
2834 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2835 goto save;
2836 }
2837
2838 /* Otherwise set the foreground colour. */
2839 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2840
2841 save:
2842 /* Save the new values in the terminal current cell. */
2843 tc->fg = gc->fg;
2844 }
2845
2846 static void
2847 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2848 {
2849 struct grid_cell *tc = &tty->cell;
2850 char s[32];
2851
2852 /* Is this a 24-bit or 256-colour colour? */
2853 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2854 if (tty_try_colour(tty, gc->bg, "48") == 0)
2855 goto save;
2856 /* Should not get here, already converted in tty_check_bg. */
2857 return;
2858 }
2859
2860 /* Is this an aixterm bright colour? */
2861 if (gc->bg >= 90 && gc->bg <= 97) {
2862 if (tty->term->flags & TERM_256COLOURS) {
2863 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2864 tty_puts(tty, s);
2865 } else
2866 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2867 goto save;
2868 }
2869
2870 /* Otherwise set the background colour. */
2871 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2872
2873 save:
2874 /* Save the new values in the terminal current cell. */
2875 tc->bg = gc->bg;
2876 }
2877
2878 static void
2879 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2880 {
2881 struct grid_cell *tc = &tty->cell;
2882 u_int c;
2883 u_char r, g, b;
2884
2885 /* Clear underline colour. */
2886 if (gc->us == 0) {
2887 tty_putcode(tty, TTYC_OL);
2888 goto save;
2889 }
2890
2891 /* Must be an RGB colour - this should never happen. */
2892 if (~gc->us & COLOUR_FLAG_RGB)
2893 return;
2894
2895 /*
2896 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2897 * capability format. Calculate the colour value.
2898 */
2899 colour_split_rgb(gc->us, &r, &g, &b);
2900 c = (65536 * r) + (256 * g) + b;
2901
2902 /*
2903 * Write the colour. Only use setal if the RGB flag is set because the
2904 * non-RGB version may be wrong.
2905 */
2906 if (tty_term_has(tty->term, TTYC_SETULC))
2907 tty_putcode1(tty, TTYC_SETULC, c);
2908 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2909 tty_term_has(tty->term, TTYC_RGB))
2910 tty_putcode1(tty, TTYC_SETAL, c);
2911
2912 save:
2913 /* Save the new values in the terminal current cell. */
2914 tc->us = gc->us;
2915 }
2916
2917 static int
2918 tty_try_colour(struct tty *tty, int colour, const char *type)
2919 {
2920 u_char r, g, b;
2921
2922 if (colour & COLOUR_FLAG_256) {
2923 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2924 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2925 else if (tty_term_has(tty->term, TTYC_SETAB))
2926 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2927 return (0);
2928 }
2929
2930 if (colour & COLOUR_FLAG_RGB) {
2931 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2932 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2933 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2934 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2935 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2936 return (0);
2937 }
2938
2939 return (-1);
2940 }
2941
2942 static void
2943 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2944 {
2945 memcpy(gc, &grid_default_cell, sizeof *gc);
2946 gc->fg = wp->palette.fg;
2947 gc->bg = wp->palette.bg;
2948 }
2949
2950 void
2951 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2952 {
2953 struct options *oo = wp->options;
2954 struct format_tree *ft;
2955
2956 memcpy(gc, &grid_default_cell, sizeof *gc);
2957
2958 if (wp->flags & PANE_STYLECHANGED) {
2959 log_debug("%%%u: style changed", wp->id);
2960 wp->flags &= ~PANE_STYLECHANGED;
2961
2962 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
2963 FORMAT_NOJOBS);
2964 format_defaults(ft, NULL, NULL, NULL, wp);
2965 tty_window_default_style(&wp->cached_active_gc, wp);
2966 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
2967 tty_window_default_style(&wp->cached_gc, wp);
2968 style_add(&wp->cached_gc, oo, "window-style", ft);
2969 format_free(ft);
2970 }
2971
2972 if (gc->fg == 8) {
2973 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
2974 gc->fg = wp->cached_active_gc.fg;
2975 else
2976 gc->fg = wp->cached_gc.fg;
2977 }
2978
2979 if (gc->bg == 8) {
2980 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
2981 gc->bg = wp->cached_active_gc.bg;
2982 else
2983 gc->bg = wp->cached_gc.bg;
2984 }
2985 }
2986
2987 static void
2988 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
2989 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
2990 {
2991 struct grid_cell gc;
2992
2993 memcpy(&gc, &grid_default_cell, sizeof gc);
2994 gc.bg = bg;
2995 tty_attributes(tty, &gc, defaults, palette, hl);
2996 }
2997
2998 static void
2999 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
3000 {
3001 struct tty *tty = data;
3002 struct client *c = tty->client;
3003
3004 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3005 free(c->clipboard_panes);
3006 c->clipboard_panes = NULL;
3007 c->clipboard_npanes = 0;
3008
3009 tty->flags &= ~TTY_OSC52QUERY;
3010 }
3011
3012 void
3013 tty_clipboard_query(struct tty *tty)
3014 {
3015 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3016
3017 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3018 return;
3019 tty_putcode_ptr2(tty, TTYC_MS, "", "?");
3020
3021 tty->flags |= TTY_OSC52QUERY;
3022 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3023 evtimer_add(&tty->clipboard_timer, &tv);
3024 }
tmux -- terminal multiplexer similar to GNU Screen