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Add a way to force a colour to RGB and a format to display it.
[tmux-openbsd.git] / tty.c
blob243eae56749e4762929b232c2a806443fc632926
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 *, const char *);
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);
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 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 = xstrdup("");
109
110 if (tcgetattr(c->fd, &tty->tio) != 0)
111 return (-1);
112 return (0);
113 }
114
115 void
116 tty_resize(struct tty *tty)
117 {
118 struct client *c = tty->client;
119 struct winsize ws;
120 u_int sx, sy, xpixel, ypixel;
121
122 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
123 sx = ws.ws_col;
124 if (sx == 0) {
125 sx = 80;
126 xpixel = 0;
127 } else
128 xpixel = ws.ws_xpixel / sx;
129 sy = ws.ws_row;
130 if (sy == 0) {
131 sy = 24;
132 ypixel = 0;
133 } else
134 ypixel = ws.ws_ypixel / sy;
135 } else {
136 sx = 80;
137 sy = 24;
138 xpixel = 0;
139 ypixel = 0;
140 }
141 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
142 xpixel, ypixel);
143 tty_set_size(tty, sx, sy, xpixel, ypixel);
144 tty_invalidate(tty);
145 }
146
147 void
148 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
149 {
150 tty->sx = sx;
151 tty->sy = sy;
152 tty->xpixel = xpixel;
153 tty->ypixel = ypixel;
154 }
155
156 static void
157 tty_read_callback(__unused int fd, __unused short events, void *data)
158 {
159 struct tty *tty = data;
160 struct client *c = tty->client;
161 const char *name = c->name;
162 size_t size = EVBUFFER_LENGTH(tty->in);
163 int nread;
164
165 nread = evbuffer_read(tty->in, c->fd, -1);
166 if (nread == 0 || nread == -1) {
167 if (nread == 0)
168 log_debug("%s: read closed", name);
169 else
170 log_debug("%s: read error: %s", name, strerror(errno));
171 event_del(&tty->event_in);
172 server_client_lost(tty->client);
173 return;
174 }
175 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
176
177 while (tty_keys_next(tty))
178 ;
179 }
180
181 static void
182 tty_timer_callback(__unused int fd, __unused short events, void *data)
183 {
184 struct tty *tty = data;
185 struct client *c = tty->client;
186 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
187
188 log_debug("%s: %zu discarded", c->name, tty->discarded);
189
190 c->flags |= CLIENT_ALLREDRAWFLAGS;
191 c->discarded += tty->discarded;
192
193 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
194 tty->flags &= ~TTY_BLOCK;
195 tty_invalidate(tty);
196 return;
197 }
198 tty->discarded = 0;
199 evtimer_add(&tty->timer, &tv);
200 }
201
202 static int
203 tty_block_maybe(struct tty *tty)
204 {
205 struct client *c = tty->client;
206 size_t size = EVBUFFER_LENGTH(tty->out);
207 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
208
209 if (size < TTY_BLOCK_START(tty))
210 return (0);
211
212 if (tty->flags & TTY_BLOCK)
213 return (1);
214 tty->flags |= TTY_BLOCK;
215
216 log_debug("%s: can't keep up, %zu discarded", c->name, size);
217
218 evbuffer_drain(tty->out, size);
219 c->discarded += size;
220
221 tty->discarded = 0;
222 evtimer_add(&tty->timer, &tv);
223 return (1);
224 }
225
226 static void
227 tty_write_callback(__unused int fd, __unused short events, void *data)
228 {
229 struct tty *tty = data;
230 struct client *c = tty->client;
231 size_t size = EVBUFFER_LENGTH(tty->out);
232 int nwrite;
233
234 nwrite = evbuffer_write(tty->out, c->fd);
235 if (nwrite == -1)
236 return;
237 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
238
239 if (c->redraw > 0) {
240 if ((size_t)nwrite >= c->redraw)
241 c->redraw = 0;
242 else
243 c->redraw -= nwrite;
244 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
245 c->redraw);
246 } else if (tty_block_maybe(tty))
247 return;
248
249 if (EVBUFFER_LENGTH(tty->out) != 0)
250 event_add(&tty->event_out, NULL);
251 }
252
253 int
254 tty_open(struct tty *tty, char **cause)
255 {
256 struct client *c = tty->client;
257
258 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
259 c->term_ncaps, &c->term_features, cause);
260 if (tty->term == NULL) {
261 tty_close(tty);
262 return (-1);
263 }
264 tty->flags |= TTY_OPENED;
265
266 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
267
268 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
269 tty_read_callback, tty);
270 tty->in = evbuffer_new();
271 if (tty->in == NULL)
272 fatal("out of memory");
273
274 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
275 tty->out = evbuffer_new();
276 if (tty->out == NULL)
277 fatal("out of memory");
278
279 evtimer_set(&tty->timer, tty_timer_callback, tty);
280
281 tty_start_tty(tty);
282
283 tty_keys_build(tty);
284
285 return (0);
286 }
287
288 static void
289 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
290 {
291 struct tty *tty = data;
292 struct client *c = tty->client;
293
294 log_debug("%s: start timer fired", c->name);
295 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEXDA)) == 0)
296 tty_update_features(tty);
297 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
298 }
299
300 void
301 tty_start_tty(struct tty *tty)
302 {
303 struct client *c = tty->client;
304 struct termios tio;
305 struct timeval tv = { .tv_sec = 1 };
306
307 setblocking(c->fd, 0);
308 event_add(&tty->event_in, NULL);
309
310 memcpy(&tio, &tty->tio, sizeof tio);
311 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
312 tio.c_iflag |= IGNBRK;
313 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
314 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
315 ECHOKE|ISIG);
316 tio.c_cc[VMIN] = 1;
317 tio.c_cc[VTIME] = 0;
318 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
319 tcflush(c->fd, TCOFLUSH);
320
321 tty_putcode(tty, TTYC_SMCUP);
322
323 tty_putcode(tty, TTYC_SMKX);
324 tty_putcode(tty, TTYC_CLEAR);
325
326 if (tty_acs_needed(tty)) {
327 log_debug("%s: using capabilities for ACS", c->name);
328 tty_putcode(tty, TTYC_ENACS);
329 } else
330 log_debug("%s: using UTF-8 for ACS", c->name);
331
332 tty_putcode(tty, TTYC_CNORM);
333 if (tty_term_has(tty->term, TTYC_KMOUS)) {
334 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
335 tty_puts(tty, "\033[?1006l\033[?1005l");
336 }
337
338 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
339 evtimer_add(&tty->start_timer, &tv);
340
341 tty->flags |= TTY_STARTED;
342 tty_invalidate(tty);
343
344 if (*tty->ccolour != '\0')
345 tty_force_cursor_colour(tty, "");
346
347 tty->mouse_drag_flag = 0;
348 tty->mouse_drag_update = NULL;
349 tty->mouse_drag_release = NULL;
350 }
351
352 void
353 tty_send_requests(struct tty *tty)
354 {
355 if (~tty->flags & TTY_STARTED)
356 return;
357
358 if (tty->term->flags & TERM_VT100LIKE) {
359 if (~tty->flags & TTY_HAVEDA)
360 tty_puts(tty, "\033[>c");
361 if (~tty->flags & TTY_HAVEXDA)
362 tty_puts(tty, "\033[>q");
363 } else
364 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
365 }
366
367 void
368 tty_stop_tty(struct tty *tty)
369 {
370 struct client *c = tty->client;
371 struct winsize ws;
372
373 if (!(tty->flags & TTY_STARTED))
374 return;
375 tty->flags &= ~TTY_STARTED;
376
377 evtimer_del(&tty->start_timer);
378
379 event_del(&tty->timer);
380 tty->flags &= ~TTY_BLOCK;
381
382 event_del(&tty->event_in);
383 event_del(&tty->event_out);
384
385 /*
386 * Be flexible about error handling and try not kill the server just
387 * because the fd is invalid. Things like ssh -t can easily leave us
388 * with a dead tty.
389 */
390 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
391 return;
392 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
393 return;
394
395 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
396 if (tty_acs_needed(tty))
397 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
398 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
399 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
400 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
401 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
402 if (tty_term_has(tty->term, TTYC_SE))
403 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
404 else if (tty_term_has(tty->term, TTYC_SS))
405 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
406 }
407 if (tty->mode & MODE_BRACKETPASTE)
408 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
409 if (*tty->ccolour != '\0')
410 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
411
412 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
413 if (tty_term_has(tty->term, TTYC_KMOUS)) {
414 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
415 tty_raw(tty, "\033[?1006l\033[?1005l");
416 }
417
418 if (tty->term->flags & TERM_VT100LIKE)
419 tty_raw(tty, "\033[?7727l");
420 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
421 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
422
423 if (tty_use_margin(tty))
424 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
425 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
426
427 setblocking(c->fd, 1);
428 }
429
430 void
431 tty_close(struct tty *tty)
432 {
433 if (event_initialized(&tty->key_timer))
434 evtimer_del(&tty->key_timer);
435 tty_stop_tty(tty);
436
437 if (tty->flags & TTY_OPENED) {
438 evbuffer_free(tty->in);
439 event_del(&tty->event_in);
440 evbuffer_free(tty->out);
441 event_del(&tty->event_out);
442
443 tty_term_free(tty->term);
444 tty_keys_free(tty);
445
446 tty->flags &= ~TTY_OPENED;
447 }
448 }
449
450 void
451 tty_free(struct tty *tty)
452 {
453 tty_close(tty);
454 free(tty->ccolour);
455 }
456
457 void
458 tty_update_features(struct tty *tty)
459 {
460 struct client *c = tty->client;
461
462 if (tty_apply_features(tty->term, c->term_features))
463 tty_term_apply_overrides(tty->term);
464
465 if (tty_use_margin(tty))
466 tty_putcode(tty, TTYC_ENMG);
467 if (options_get_number(global_options, "extended-keys"))
468 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
469 if (options_get_number(global_options, "focus-events"))
470 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
471 if (tty->term->flags & TERM_VT100LIKE)
472 tty_puts(tty, "\033[?7727h");
473 }
474
475 void
476 tty_raw(struct tty *tty, const char *s)
477 {
478 struct client *c = tty->client;
479 ssize_t n, slen;
480 u_int i;
481
482 slen = strlen(s);
483 for (i = 0; i < 5; i++) {
484 n = write(c->fd, s, slen);
485 if (n >= 0) {
486 s += n;
487 slen -= n;
488 if (slen == 0)
489 break;
490 } else if (n == -1 && errno != EAGAIN)
491 break;
492 usleep(100);
493 }
494 }
495
496 void
497 tty_putcode(struct tty *tty, enum tty_code_code code)
498 {
499 tty_puts(tty, tty_term_string(tty->term, code));
500 }
501
502 void
503 tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
504 {
505 if (a < 0)
506 return;
507 tty_puts(tty, tty_term_string1(tty->term, code, a));
508 }
509
510 void
511 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
512 {
513 if (a < 0 || b < 0)
514 return;
515 tty_puts(tty, tty_term_string2(tty->term, code, a, b));
516 }
517
518 void
519 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
520 {
521 if (a < 0 || b < 0 || c < 0)
522 return;
523 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
524 }
525
526 void
527 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
528 {
529 if (a != NULL)
530 tty_puts(tty, tty_term_ptr1(tty->term, code, a));
531 }
532
533 void
534 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
535 const void *b)
536 {
537 if (a != NULL && b != NULL)
538 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
539 }
540
541 static void
542 tty_add(struct tty *tty, const char *buf, size_t len)
543 {
544 struct client *c = tty->client;
545
546 if (tty->flags & TTY_BLOCK) {
547 tty->discarded += len;
548 return;
549 }
550
551 evbuffer_add(tty->out, buf, len);
552 log_debug("%s: %.*s", c->name, (int)len, buf);
553 c->written += len;
554
555 if (tty_log_fd != -1)
556 write(tty_log_fd, buf, len);
557 if (tty->flags & TTY_STARTED)
558 event_add(&tty->event_out, NULL);
559 }
560
561 void
562 tty_puts(struct tty *tty, const char *s)
563 {
564 if (*s != '\0')
565 tty_add(tty, s, strlen(s));
566 }
567
568 void
569 tty_putc(struct tty *tty, u_char ch)
570 {
571 const char *acs;
572
573 if ((tty->term->flags & TERM_NOAM) &&
574 ch >= 0x20 && ch != 0x7f &&
575 tty->cy == tty->sy - 1 &&
576 tty->cx + 1 >= tty->sx)
577 return;
578
579 if (tty->cell.attr & GRID_ATTR_CHARSET) {
580 acs = tty_acs_get(tty, ch);
581 if (acs != NULL)
582 tty_add(tty, acs, strlen(acs));
583 else
584 tty_add(tty, &ch, 1);
585 } else
586 tty_add(tty, &ch, 1);
587
588 if (ch >= 0x20 && ch != 0x7f) {
589 if (tty->cx >= tty->sx) {
590 tty->cx = 1;
591 if (tty->cy != tty->rlower)
592 tty->cy++;
593
594 /*
595 * On !am terminals, force the cursor position to where
596 * we think it should be after a line wrap - this means
597 * it works on sensible terminals as well.
598 */
599 if (tty->term->flags & TERM_NOAM)
600 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
601 } else
602 tty->cx++;
603 }
604 }
605
606 void
607 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
608 {
609 if ((tty->term->flags & TERM_NOAM) &&
610 tty->cy == tty->sy - 1 &&
611 tty->cx + len >= tty->sx)
612 len = tty->sx - tty->cx - 1;
613
614 tty_add(tty, buf, len);
615 if (tty->cx + width > tty->sx) {
616 tty->cx = (tty->cx + width) - tty->sx;
617 if (tty->cx <= tty->sx)
618 tty->cy++;
619 else
620 tty->cx = tty->cy = UINT_MAX;
621 } else
622 tty->cx += width;
623 }
624
625 static void
626 tty_set_italics(struct tty *tty)
627 {
628 const char *s;
629
630 if (tty_term_has(tty->term, TTYC_SITM)) {
631 s = options_get_string(global_options, "default-terminal");
632 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
633 tty_putcode(tty, TTYC_SITM);
634 return;
635 }
636 }
637 tty_putcode(tty, TTYC_SMSO);
638 }
639
640 void
641 tty_set_title(struct tty *tty, const char *title)
642 {
643 if (!tty_term_has(tty->term, TTYC_TSL) ||
644 !tty_term_has(tty->term, TTYC_FSL))
645 return;
646
647 tty_putcode(tty, TTYC_TSL);
648 tty_puts(tty, title);
649 tty_putcode(tty, TTYC_FSL);
650 }
651
652 static void
653 tty_force_cursor_colour(struct tty *tty, const char *ccolour)
654 {
655 if (*ccolour == '\0')
656 tty_putcode(tty, TTYC_CR);
657 else
658 tty_putcode_ptr1(tty, TTYC_CS, ccolour);
659 free(tty->ccolour);
660 tty->ccolour = xstrdup(ccolour);
661 }
662
663 static void
664 tty_update_cursor(struct tty *tty, int mode, int changed, struct screen *s)
665 {
666 enum screen_cursor_style cstyle;
667
668 /* Set cursor colour if changed. */
669 if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
670 tty_force_cursor_colour(tty, s->ccolour);
671
672 /* If cursor is off, set as invisible. */
673 if (~mode & MODE_CURSOR) {
674 if (changed & MODE_CURSOR)
675 tty_putcode(tty, TTYC_CIVIS);
676 return;
677 }
678
679 /* Check if blinking or very visible flag changed or style changed. */
680 if (s == NULL)
681 cstyle = tty->cstyle;
682 else
683 cstyle = s->cstyle;
684 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
685 return;
686
687 /*
688 * Set cursor style. If an explicit style has been set with DECSCUSR,
689 * set it if supported, otherwise send cvvis for blinking styles.
690 *
691 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
692 * if either the blinking or very visible flags are set.
693 */
694 tty_putcode(tty, TTYC_CNORM);
695 switch (cstyle) {
696 case SCREEN_CURSOR_DEFAULT:
697 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
698 if (tty_term_has(tty->term, TTYC_SE))
699 tty_putcode(tty, TTYC_SE);
700 else
701 tty_putcode1(tty, TTYC_SS, 0);
702 }
703 if (mode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
704 tty_putcode(tty, TTYC_CVVIS);
705 break;
706 case SCREEN_CURSOR_BLOCK:
707 if (tty_term_has(tty->term, TTYC_SS)) {
708 if (mode & MODE_CURSOR_BLINKING)
709 tty_putcode1(tty, TTYC_SS, 1);
710 else
711 tty_putcode1(tty, TTYC_SS, 2);
712 } else if (mode & MODE_CURSOR_BLINKING)
713 tty_putcode(tty, TTYC_CVVIS);
714 break;
715 case SCREEN_CURSOR_UNDERLINE:
716 if (tty_term_has(tty->term, TTYC_SS)) {
717 if (mode & MODE_CURSOR_BLINKING)
718 tty_putcode1(tty, TTYC_SS, 3);
719 else
720 tty_putcode1(tty, TTYC_SS, 4);
721 } else if (mode & MODE_CURSOR_BLINKING)
722 tty_putcode(tty, TTYC_CVVIS);
723 break;
724 case SCREEN_CURSOR_BAR:
725 if (tty_term_has(tty->term, TTYC_SS)) {
726 if (mode & MODE_CURSOR_BLINKING)
727 tty_putcode1(tty, TTYC_SS, 5);
728 else
729 tty_putcode1(tty, TTYC_SS, 6);
730 } else if (mode & MODE_CURSOR_BLINKING)
731 tty_putcode(tty, TTYC_CVVIS);
732 break;
733 }
734 tty->cstyle = cstyle;
735 }
736
737 void
738 tty_update_mode(struct tty *tty, int mode, struct screen *s)
739 {
740 struct client *c = tty->client;
741 int changed;
742
743 if (tty->flags & TTY_NOCURSOR)
744 mode &= ~MODE_CURSOR;
745
746 changed = mode ^ tty->mode;
747 if (log_get_level() != 0 && changed != 0) {
748 log_debug("%s: current mode %s", c->name,
749 screen_mode_to_string(tty->mode));
750 log_debug("%s: setting mode %s", c->name,
751 screen_mode_to_string(mode));
752 }
753
754 tty_update_cursor(tty, mode, changed, s);
755 if ((changed & ALL_MOUSE_MODES) &&
756 tty_term_has(tty->term, TTYC_KMOUS)) {
757 /*
758 * If the mouse modes have changed, clear any that are set and
759 * apply again. There are differences in how terminals track
760 * the various bits.
761 */
762 if (tty->mode & MODE_MOUSE_SGR)
763 tty_puts(tty, "\033[?1006l");
764 if (tty->mode & MODE_MOUSE_STANDARD)
765 tty_puts(tty, "\033[?1000l");
766 if (tty->mode & MODE_MOUSE_BUTTON)
767 tty_puts(tty, "\033[?1002l");
768 if (tty->mode & MODE_MOUSE_ALL)
769 tty_puts(tty, "\033[?1003l");
770 if (mode & ALL_MOUSE_MODES)
771 tty_puts(tty, "\033[?1006h");
772 if (mode & MODE_MOUSE_STANDARD)
773 tty_puts(tty, "\033[?1000h");
774 if (mode & MODE_MOUSE_BUTTON)
775 tty_puts(tty, "\033[?1002h");
776 if (mode & MODE_MOUSE_ALL)
777 tty_puts(tty, "\033[?1003h");
778 }
779 if (changed & MODE_BRACKETPASTE) {
780 if (mode & MODE_BRACKETPASTE)
781 tty_putcode(tty, TTYC_ENBP);
782 else
783 tty_putcode(tty, TTYC_DSBP);
784 }
785 tty->mode = mode;
786 }
787
788 static void
789 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
790 enum tty_code_code code1, u_int n)
791 {
792 if (tty_term_has(tty->term, code))
793 tty_putcode1(tty, code, n);
794 else {
795 while (n-- > 0)
796 tty_putcode(tty, code1);
797 }
798 }
799
800 static void
801 tty_repeat_space(struct tty *tty, u_int n)
802 {
803 static char s[500];
804
805 if (*s != ' ')
806 memset(s, ' ', sizeof s);
807
808 while (n > sizeof s) {
809 tty_putn(tty, s, sizeof s, sizeof s);
810 n -= sizeof s;
811 }
812 if (n != 0)
813 tty_putn(tty, s, n, n);
814 }
815
816 /* Is this window bigger than the terminal? */
817 int
818 tty_window_bigger(struct tty *tty)
819 {
820 struct client *c = tty->client;
821 struct window *w = c->session->curw->window;
822
823 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
824 }
825
826 /* What offset should this window be drawn at? */
827 int
828 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
829 {
830 *ox = tty->oox;
831 *oy = tty->ooy;
832 *sx = tty->osx;
833 *sy = tty->osy;
834
835 return (tty->oflag);
836 }
837
838 /* What offset should this window be drawn at? */
839 static int
840 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
841 {
842 struct client *c = tty->client;
843 struct window *w = c->session->curw->window;
844 struct window_pane *wp = server_client_get_pane(c);
845 u_int cx, cy, lines;
846
847 lines = status_line_size(c);
848
849 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
850 *ox = 0;
851 *oy = 0;
852 *sx = w->sx;
853 *sy = w->sy;
854
855 c->pan_window = NULL;
856 return (0);
857 }
858
859 *sx = tty->sx;
860 *sy = tty->sy - lines;
861
862 if (c->pan_window == w) {
863 if (*sx >= w->sx)
864 c->pan_ox = 0;
865 else if (c->pan_ox + *sx > w->sx)
866 c->pan_ox = w->sx - *sx;
867 *ox = c->pan_ox;
868 if (*sy >= w->sy)
869 c->pan_oy = 0;
870 else if (c->pan_oy + *sy > w->sy)
871 c->pan_oy = w->sy - *sy;
872 *oy = c->pan_oy;
873 return (1);
874 }
875
876 if (~wp->screen->mode & MODE_CURSOR) {
877 *ox = 0;
878 *oy = 0;
879 } else {
880 cx = wp->xoff + wp->screen->cx;
881 cy = wp->yoff + wp->screen->cy;
882
883 if (cx < *sx)
884 *ox = 0;
885 else if (cx > w->sx - *sx)
886 *ox = w->sx - *sx;
887 else
888 *ox = cx - *sx / 2;
889
890 if (cy < *sy)
891 *oy = 0;
892 else if (cy > w->sy - *sy)
893 *oy = w->sy - *sy;
894 else
895 *oy = cy - *sy / 2;
896 }
897
898 c->pan_window = NULL;
899 return (1);
900 }
901
902 /* Update stored offsets for a window and redraw if necessary. */
903 void
904 tty_update_window_offset(struct window *w)
905 {
906 struct client *c;
907
908 TAILQ_FOREACH(c, &clients, entry) {
909 if (c->session != NULL && c->session->curw->window == w)
910 tty_update_client_offset(c);
911 }
912 }
913
914 /* Update stored offsets for a client and redraw if necessary. */
915 void
916 tty_update_client_offset(struct client *c)
917 {
918 u_int ox, oy, sx, sy;
919
920 if (~c->flags & CLIENT_TERMINAL)
921 return;
922
923 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
924 if (ox == c->tty.oox &&
925 oy == c->tty.ooy &&
926 sx == c->tty.osx &&
927 sy == c->tty.osy)
928 return;
929
930 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
931 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
932 ox, oy, sx, sy);
933
934 c->tty.oox = ox;
935 c->tty.ooy = oy;
936 c->tty.osx = sx;
937 c->tty.osy = sy;
938
939 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
940 }
941
942 /*
943 * Is the region large enough to be worth redrawing once later rather than
944 * probably several times now? Currently yes if it is more than 50% of the
945 * pane.
946 */
947 static int
948 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
949 {
950 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
951 }
952
953 /*
954 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
955 * emulated.
956 */
957 static int
958 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
959 {
960 if (tty_term_flag(tty->term, TTYC_BCE))
961 return (0);
962 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
963 return (1);
964 return (0);
965 }
966
967 /*
968 * Redraw scroll region using data from screen (already updated). Used when
969 * CSR not supported, or window is a pane that doesn't take up the full
970 * width of the terminal.
971 */
972 static void
973 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
974 {
975 struct client *c = tty->client;
976 u_int i;
977
978 /*
979 * If region is large, schedule a redraw. In most cases this is likely
980 * to be followed by some more scrolling.
981 */
982 if (tty_large_region(tty, ctx)) {
983 log_debug("%s: %s large redraw", __func__, c->name);
984 ctx->redraw_cb(ctx);
985 return;
986 }
987
988 for (i = ctx->orupper; i <= ctx->orlower; i++)
989 tty_draw_pane(tty, ctx, i);
990 }
991
992 /* Is this position visible in the pane? */
993 static int
994 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
995 u_int py, u_int nx, u_int ny)
996 {
997 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
998
999 if (!ctx->bigger)
1000 return (1);
1001
1002 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1003 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1004 return (0);
1005 return (1);
1006 }
1007
1008 /* Clamp line position to visible part of pane. */
1009 static int
1010 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1011 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1012 {
1013 u_int xoff = ctx->rxoff + px;
1014
1015 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1016 return (0);
1017 *ry = ctx->yoff + py - ctx->woy;
1018
1019 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1020 /* All visible. */
1021 *i = 0;
1022 *x = ctx->xoff + px - ctx->wox;
1023 *rx = nx;
1024 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1025 /* Both left and right not visible. */
1026 *i = ctx->wox;
1027 *x = 0;
1028 *rx = ctx->wsx;
1029 } else if (xoff < ctx->wox) {
1030 /* Left not visible. */
1031 *i = ctx->wox - (ctx->xoff + px);
1032 *x = 0;
1033 *rx = nx - *i;
1034 } else {
1035 /* Right not visible. */
1036 *i = 0;
1037 *x = (ctx->xoff + px) - ctx->wox;
1038 *rx = ctx->wsx - *x;
1039 }
1040 if (*rx > nx)
1041 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1042
1043 return (1);
1044 }
1045
1046 /* Clear a line. */
1047 static void
1048 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1049 u_int px, u_int nx, u_int bg)
1050 {
1051 struct client *c = tty->client;
1052 struct overlay_ranges r;
1053 u_int i;
1054
1055 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1056
1057 /* Nothing to clear. */
1058 if (nx == 0)
1059 return;
1060
1061 /* If genuine BCE is available, can try escape sequences. */
1062 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1063 /* Off the end of the line, use EL if available. */
1064 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1065 tty_cursor(tty, px, py);
1066 tty_putcode(tty, TTYC_EL);
1067 return;
1068 }
1069
1070 /* At the start of the line. Use EL1. */
1071 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1072 tty_cursor(tty, px + nx - 1, py);
1073 tty_putcode(tty, TTYC_EL1);
1074 return;
1075 }
1076
1077 /* Section of line. Use ECH if possible. */
1078 if (tty_term_has(tty->term, TTYC_ECH)) {
1079 tty_cursor(tty, px, py);
1080 tty_putcode1(tty, TTYC_ECH, nx);
1081 return;
1082 }
1083 }
1084
1085 /*
1086 * Couldn't use an escape sequence, use spaces. Clear only the visible
1087 * bit if there is an overlay.
1088 */
1089 tty_check_overlay_range(tty, px, py, nx, &r);
1090 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1091 if (r.nx[i] == 0)
1092 continue;
1093 tty_cursor(tty, r.px[i], py);
1094 tty_repeat_space(tty, r.nx[i]);
1095 }
1096 }
1097
1098 /* Clear a line, adjusting to visible part of pane. */
1099 static void
1100 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1101 u_int px, u_int nx, u_int bg)
1102 {
1103 struct client *c = tty->client;
1104 u_int i, x, rx, ry;
1105
1106 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1107
1108 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1109 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1110 }
1111
1112 /* Clamp area position to visible part of pane. */
1113 static int
1114 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1115 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1116 u_int *ry)
1117 {
1118 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1119
1120 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1121 return (0);
1122
1123 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1124 /* All visible. */
1125 *i = 0;
1126 *x = ctx->xoff + px - ctx->wox;
1127 *rx = nx;
1128 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1129 /* Both left and right not visible. */
1130 *i = ctx->wox;
1131 *x = 0;
1132 *rx = ctx->wsx;
1133 } else if (xoff < ctx->wox) {
1134 /* Left not visible. */
1135 *i = ctx->wox - (ctx->xoff + px);
1136 *x = 0;
1137 *rx = nx - *i;
1138 } else {
1139 /* Right not visible. */
1140 *i = 0;
1141 *x = (ctx->xoff + px) - ctx->wox;
1142 *rx = ctx->wsx - *x;
1143 }
1144 if (*rx > nx)
1145 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1146
1147 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1148 /* All visible. */
1149 *j = 0;
1150 *y = ctx->yoff + py - ctx->woy;
1151 *ry = ny;
1152 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1153 /* Both top and bottom not visible. */
1154 *j = ctx->woy;
1155 *y = 0;
1156 *ry = ctx->wsy;
1157 } else if (yoff < ctx->woy) {
1158 /* Top not visible. */
1159 *j = ctx->woy - (ctx->yoff + py);
1160 *y = 0;
1161 *ry = ny - *j;
1162 } else {
1163 /* Bottom not visible. */
1164 *j = 0;
1165 *y = (ctx->yoff + py) - ctx->woy;
1166 *ry = ctx->wsy - *y;
1167 }
1168 if (*ry > ny)
1169 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1170
1171 return (1);
1172 }
1173
1174 /* Clear an area, adjusting to visible part of pane. */
1175 static void
1176 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1177 u_int ny, u_int px, u_int nx, u_int bg)
1178 {
1179 struct client *c = tty->client;
1180 u_int yy;
1181 char tmp[64];
1182
1183 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1184
1185 /* Nothing to clear. */
1186 if (nx == 0 || ny == 0)
1187 return;
1188
1189 /* If genuine BCE is available, can try escape sequences. */
1190 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1191 /* Use ED if clearing off the bottom of the terminal. */
1192 if (px == 0 &&
1193 px + nx >= tty->sx &&
1194 py + ny >= tty->sy &&
1195 tty_term_has(tty->term, TTYC_ED)) {
1196 tty_cursor(tty, 0, py);
1197 tty_putcode(tty, TTYC_ED);
1198 return;
1199 }
1200
1201 /*
1202 * On VT420 compatible terminals we can use DECFRA if the
1203 * background colour isn't default (because it doesn't work
1204 * after SGR 0).
1205 */
1206 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1207 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1208 py + 1, px + 1, py + ny, px + nx);
1209 tty_puts(tty, tmp);
1210 return;
1211 }
1212
1213 /* Full lines can be scrolled away to clear them. */
1214 if (px == 0 &&
1215 px + nx >= tty->sx &&
1216 ny > 2 &&
1217 tty_term_has(tty->term, TTYC_CSR) &&
1218 tty_term_has(tty->term, TTYC_INDN)) {
1219 tty_region(tty, py, py + ny - 1);
1220 tty_margin_off(tty);
1221 tty_putcode1(tty, TTYC_INDN, ny);
1222 return;
1223 }
1224
1225 /*
1226 * If margins are supported, can just scroll the area off to
1227 * clear it.
1228 */
1229 if (nx > 2 &&
1230 ny > 2 &&
1231 tty_term_has(tty->term, TTYC_CSR) &&
1232 tty_use_margin(tty) &&
1233 tty_term_has(tty->term, TTYC_INDN)) {
1234 tty_region(tty, py, py + ny - 1);
1235 tty_margin(tty, px, px + nx - 1);
1236 tty_putcode1(tty, TTYC_INDN, ny);
1237 return;
1238 }
1239 }
1240
1241 /* Couldn't use an escape sequence, loop over the lines. */
1242 for (yy = py; yy < py + ny; yy++)
1243 tty_clear_line(tty, defaults, yy, px, nx, bg);
1244 }
1245
1246 /* Clear an area in a pane. */
1247 static void
1248 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1249 u_int ny, u_int px, u_int nx, u_int bg)
1250 {
1251 u_int i, j, x, y, rx, ry;
1252
1253 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1254 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1255 }
1256
1257 static void
1258 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1259 {
1260 struct screen *s = ctx->s;
1261 u_int nx = ctx->sx, i, x, rx, ry;
1262
1263 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1264
1265 if (!ctx->bigger) {
1266 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1267 &ctx->defaults, ctx->palette);
1268 return;
1269 }
1270 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1271 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1272 ctx->palette);
1273 }
1274 }
1275
1276 static const struct grid_cell *
1277 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1278 {
1279 static struct grid_cell new;
1280 int c;
1281
1282 /* Characters less than 0x7f are always fine, no matter what. */
1283 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1284 return (gc);
1285
1286 /* UTF-8 terminal and a UTF-8 character - fine. */
1287 if (tty->client->flags & CLIENT_UTF8)
1288 return (gc);
1289 memcpy(&new, gc, sizeof new);
1290
1291 /* See if this can be mapped to an ACS character. */
1292 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1293 if (c != -1) {
1294 utf8_set(&new.data, c);
1295 new.attr |= GRID_ATTR_CHARSET;
1296 return (&new);
1297 }
1298
1299 /* Replace by the right number of underscores. */
1300 new.data.size = gc->data.width;
1301 if (new.data.size > UTF8_SIZE)
1302 new.data.size = UTF8_SIZE;
1303 memset(new.data.data, '_', new.data.size);
1304 return (&new);
1305 }
1306
1307 /*
1308 * Check if a single character is obstructed by the overlay and return a
1309 * boolean.
1310 */
1311 static int
1312 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1313 {
1314 struct overlay_ranges r;
1315
1316 /*
1317 * A unit width range will always return nx[2] == 0 from a check, even
1318 * with multiple overlays, so it's sufficient to check just the first
1319 * two entries.
1320 */
1321 tty_check_overlay_range(tty, px, py, 1, &r);
1322 if (r.nx[0] + r.nx[1] == 0)
1323 return (0);
1324 return (1);
1325 }
1326
1327 /* Return parts of the input range which are visible. */
1328 static void
1329 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1330 struct overlay_ranges *r)
1331 {
1332 struct client *c = tty->client;
1333
1334 if (c->overlay_check == NULL) {
1335 r->px[0] = px;
1336 r->nx[0] = nx;
1337 r->px[1] = 0;
1338 r->nx[1] = 0;
1339 r->px[2] = 0;
1340 r->nx[2] = 0;
1341 return;
1342 }
1343
1344 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1345 }
1346
1347 void
1348 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1349 u_int atx, u_int aty, const struct grid_cell *defaults,
1350 struct colour_palette *palette)
1351 {
1352 struct grid *gd = s->grid;
1353 struct grid_cell gc, last;
1354 const struct grid_cell *gcp;
1355 struct grid_line *gl;
1356 struct client *c = tty->client;
1357 struct overlay_ranges r;
1358 u_int i, j, ux, sx, width, hidden, eux, nxx;
1359 u_int cellsize;
1360 int flags, cleared = 0, wrapped = 0;
1361 char buf[512];
1362 size_t len;
1363
1364 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1365 px, py, nx, atx, aty);
1366 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1367 defaults->bg);
1368
1369 /*
1370 * py is the line in the screen to draw.
1371 * px is the start x and nx is the width to draw.
1372 * atx,aty is the line on the terminal to draw it.
1373 */
1374
1375 flags = (tty->flags & TTY_NOCURSOR);
1376 tty->flags |= TTY_NOCURSOR;
1377 tty_update_mode(tty, tty->mode, s);
1378
1379 tty_region_off(tty);
1380 tty_margin_off(tty);
1381
1382 /*
1383 * Clamp the width to cellsize - note this is not cellused, because
1384 * there may be empty background cells after it (from BCE).
1385 */
1386 sx = screen_size_x(s);
1387 if (nx > sx)
1388 nx = sx;
1389 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1390 if (sx > cellsize)
1391 sx = cellsize;
1392 if (sx > tty->sx)
1393 sx = tty->sx;
1394 if (sx > nx)
1395 sx = nx;
1396 ux = 0;
1397
1398 if (py == 0)
1399 gl = NULL;
1400 else
1401 gl = grid_get_line(gd, gd->hsize + py - 1);
1402 if (gl == NULL ||
1403 (~gl->flags & GRID_LINE_WRAPPED) ||
1404 atx != 0 ||
1405 tty->cx < tty->sx ||
1406 nx < tty->sx) {
1407 if (nx < tty->sx &&
1408 atx == 0 &&
1409 px + sx != nx &&
1410 tty_term_has(tty->term, TTYC_EL1) &&
1411 !tty_fake_bce(tty, defaults, 8) &&
1412 c->overlay_check == NULL) {
1413 tty_default_attributes(tty, defaults, palette, 8);
1414 tty_cursor(tty, nx - 1, aty);
1415 tty_putcode(tty, TTYC_EL1);
1416 cleared = 1;
1417 }
1418 } else {
1419 log_debug("%s: wrapped line %u", __func__, aty);
1420 wrapped = 1;
1421 }
1422
1423 memcpy(&last, &grid_default_cell, sizeof last);
1424 len = 0;
1425 width = 0;
1426
1427 for (i = 0; i < sx; i++) {
1428 grid_view_get_cell(gd, px + i, py, &gc);
1429 gcp = tty_check_codeset(tty, &gc);
1430 if (len != 0 &&
1431 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1432 (gcp->attr & GRID_ATTR_CHARSET) ||
1433 gcp->flags != last.flags ||
1434 gcp->attr != last.attr ||
1435 gcp->fg != last.fg ||
1436 gcp->bg != last.bg ||
1437 gcp->us != last.us ||
1438 ux + width + gcp->data.width > nx ||
1439 (sizeof buf) - len < gcp->data.size)) {
1440 tty_attributes(tty, &last, defaults, palette);
1441 if (last.flags & GRID_FLAG_CLEARED) {
1442 log_debug("%s: %zu cleared", __func__, len);
1443 tty_clear_line(tty, defaults, aty, atx + ux,
1444 width, last.bg);
1445 } else {
1446 if (!wrapped || atx != 0 || ux != 0)
1447 tty_cursor(tty, atx + ux, aty);
1448 tty_putn(tty, buf, len, width);
1449 }
1450 ux += width;
1451
1452 len = 0;
1453 width = 0;
1454 wrapped = 0;
1455 }
1456
1457 if (gcp->flags & GRID_FLAG_SELECTED)
1458 screen_select_cell(s, &last, gcp);
1459 else
1460 memcpy(&last, gcp, sizeof last);
1461
1462 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1463 &r);
1464 hidden = 0;
1465 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1466 hidden += r.nx[j];
1467 hidden = gcp->data.width - hidden;
1468 if (hidden != 0 && hidden == gcp->data.width) {
1469 if (~gcp->flags & GRID_FLAG_PADDING)
1470 ux += gcp->data.width;
1471 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1472 if (~gcp->flags & GRID_FLAG_PADDING) {
1473 tty_attributes(tty, &last, defaults, palette);
1474 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1475 if (r.nx[j] == 0)
1476 continue;
1477 /* Effective width drawn so far. */
1478 eux = r.px[j] - atx;
1479 if (eux < nx) {
1480 tty_cursor(tty, r.px[j], aty);
1481 nxx = nx - eux;
1482 if (r.nx[j] > nxx)
1483 r.nx[j] = nxx;
1484 tty_repeat_space(tty, r.nx[j]);
1485 ux = eux + r.nx[j];
1486 }
1487 }
1488 }
1489 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1490 tty_attributes(tty, &last, defaults, palette);
1491 tty_cursor(tty, atx + ux, aty);
1492 for (j = 0; j < gcp->data.size; j++)
1493 tty_putc(tty, gcp->data.data[j]);
1494 ux += gcp->data.width;
1495 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1496 memcpy(buf + len, gcp->data.data, gcp->data.size);
1497 len += gcp->data.size;
1498 width += gcp->data.width;
1499 }
1500 }
1501 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1502 tty_attributes(tty, &last, defaults, palette);
1503 if (last.flags & GRID_FLAG_CLEARED) {
1504 log_debug("%s: %zu cleared (end)", __func__, len);
1505 tty_clear_line(tty, defaults, aty, atx + ux, width,
1506 last.bg);
1507 } else {
1508 if (!wrapped || atx != 0 || ux != 0)
1509 tty_cursor(tty, atx + ux, aty);
1510 tty_putn(tty, buf, len, width);
1511 }
1512 ux += width;
1513 }
1514
1515 if (!cleared && ux < nx) {
1516 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1517 nx - ux, len);
1518 tty_default_attributes(tty, defaults, palette, 8);
1519 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1520 }
1521
1522 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1523 tty_update_mode(tty, tty->mode, s);
1524 }
1525
1526 void
1527 tty_sync_start(struct tty *tty)
1528 {
1529 if (tty->flags & TTY_BLOCK)
1530 return;
1531 if (tty->flags & TTY_SYNCING)
1532 return;
1533 tty->flags |= TTY_SYNCING;
1534
1535 if (tty_term_has(tty->term, TTYC_SYNC)) {
1536 log_debug("%s sync start", tty->client->name);
1537 tty_putcode1(tty, TTYC_SYNC, 1);
1538 }
1539 }
1540
1541 void
1542 tty_sync_end(struct tty *tty)
1543 {
1544 if (tty->flags & TTY_BLOCK)
1545 return;
1546 if (~tty->flags & TTY_SYNCING)
1547 return;
1548 tty->flags &= ~TTY_SYNCING;
1549
1550 if (tty_term_has(tty->term, TTYC_SYNC)) {
1551 log_debug("%s sync end", tty->client->name);
1552 tty_putcode1(tty, TTYC_SYNC, 2);
1553 }
1554 }
1555
1556 static int
1557 tty_client_ready(struct client *c)
1558 {
1559 if (c->session == NULL || c->tty.term == NULL)
1560 return (0);
1561 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1562 return (0);
1563 if (c->tty.flags & TTY_FREEZE)
1564 return (0);
1565 return (1);
1566 }
1567
1568 void
1569 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1570 struct tty_ctx *ctx)
1571 {
1572 struct client *c;
1573 int state;
1574
1575 if (ctx->set_client_cb == NULL)
1576 return;
1577 TAILQ_FOREACH(c, &clients, entry) {
1578 if (!tty_client_ready(c))
1579 continue;
1580 state = ctx->set_client_cb(ctx, c);
1581 if (state == -1)
1582 break;
1583 if (state == 0)
1584 continue;
1585 cmdfn(&c->tty, ctx);
1586 }
1587 }
1588
1589 void
1590 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1591 {
1592 struct client *c = tty->client;
1593
1594 if (ctx->bigger ||
1595 !tty_full_width(tty, ctx) ||
1596 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1597 (!tty_term_has(tty->term, TTYC_ICH) &&
1598 !tty_term_has(tty->term, TTYC_ICH1)) ||
1599 c->overlay_check != NULL) {
1600 tty_draw_pane(tty, ctx, ctx->ocy);
1601 return;
1602 }
1603
1604 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1605
1606 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1607
1608 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1609 }
1610
1611 void
1612 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1613 {
1614 struct client *c = tty->client;
1615
1616 if (ctx->bigger ||
1617 !tty_full_width(tty, ctx) ||
1618 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1619 (!tty_term_has(tty->term, TTYC_DCH) &&
1620 !tty_term_has(tty->term, TTYC_DCH1)) ||
1621 c->overlay_check != NULL) {
1622 tty_draw_pane(tty, ctx, ctx->ocy);
1623 return;
1624 }
1625
1626 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1627
1628 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1629
1630 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1631 }
1632
1633 void
1634 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1635 {
1636 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1637
1638 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1639 }
1640
1641 void
1642 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1643 {
1644 struct client *c = tty->client;
1645
1646 if (ctx->bigger ||
1647 !tty_full_width(tty, ctx) ||
1648 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1649 !tty_term_has(tty->term, TTYC_CSR) ||
1650 !tty_term_has(tty->term, TTYC_IL1) ||
1651 ctx->sx == 1 ||
1652 ctx->sy == 1 ||
1653 c->overlay_check != NULL) {
1654 tty_redraw_region(tty, ctx);
1655 return;
1656 }
1657
1658 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1659
1660 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1661 tty_margin_off(tty);
1662 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1663
1664 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1665 tty->cx = tty->cy = UINT_MAX;
1666 }
1667
1668 void
1669 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1670 {
1671 struct client *c = tty->client;
1672
1673 if (ctx->bigger ||
1674 !tty_full_width(tty, ctx) ||
1675 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1676 !tty_term_has(tty->term, TTYC_CSR) ||
1677 !tty_term_has(tty->term, TTYC_DL1) ||
1678 ctx->sx == 1 ||
1679 ctx->sy == 1 ||
1680 c->overlay_check != NULL) {
1681 tty_redraw_region(tty, ctx);
1682 return;
1683 }
1684
1685 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1686
1687 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1688 tty_margin_off(tty);
1689 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1690
1691 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1692 tty->cx = tty->cy = UINT_MAX;
1693 }
1694
1695 void
1696 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1697 {
1698 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1699
1700 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1701 }
1702
1703 void
1704 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1705 {
1706 u_int nx = ctx->sx - ctx->ocx;
1707
1708 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1709
1710 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1711 }
1712
1713 void
1714 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1715 {
1716 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1717
1718 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1719 }
1720
1721 void
1722 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1723 {
1724 struct client *c = tty->client;
1725
1726 if (ctx->ocy != ctx->orupper)
1727 return;
1728
1729 if (ctx->bigger ||
1730 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1731 tty_fake_bce(tty, &ctx->defaults, 8) ||
1732 !tty_term_has(tty->term, TTYC_CSR) ||
1733 (!tty_term_has(tty->term, TTYC_RI) &&
1734 !tty_term_has(tty->term, TTYC_RIN)) ||
1735 ctx->sx == 1 ||
1736 ctx->sy == 1 ||
1737 c->overlay_check != NULL) {
1738 tty_redraw_region(tty, ctx);
1739 return;
1740 }
1741
1742 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1743
1744 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1745 tty_margin_pane(tty, ctx);
1746 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1747
1748 if (tty_term_has(tty->term, TTYC_RI))
1749 tty_putcode(tty, TTYC_RI);
1750 else
1751 tty_putcode1(tty, TTYC_RIN, 1);
1752 }
1753
1754 void
1755 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1756 {
1757 struct client *c = tty->client;
1758
1759 if (ctx->ocy != ctx->orlower)
1760 return;
1761
1762 if (ctx->bigger ||
1763 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1764 tty_fake_bce(tty, &ctx->defaults, 8) ||
1765 !tty_term_has(tty->term, TTYC_CSR) ||
1766 ctx->sx == 1 ||
1767 ctx->sy == 1 ||
1768 c->overlay_check != NULL) {
1769 tty_redraw_region(tty, ctx);
1770 return;
1771 }
1772
1773 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1774
1775 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1776 tty_margin_pane(tty, ctx);
1777
1778 /*
1779 * If we want to wrap a pane while using margins, the cursor needs to
1780 * be exactly on the right of the region. If the cursor is entirely off
1781 * the edge - move it back to the right. Some terminals are funny about
1782 * this and insert extra spaces, so only use the right if margins are
1783 * enabled.
1784 */
1785 if (ctx->xoff + ctx->ocx > tty->rright) {
1786 if (!tty_use_margin(tty))
1787 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1788 else
1789 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1790 } else
1791 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1792
1793 tty_putc(tty, '\n');
1794 }
1795
1796 void
1797 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1798 {
1799 struct client *c = tty->client;
1800 u_int i;
1801
1802 if (ctx->bigger ||
1803 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1804 tty_fake_bce(tty, &ctx->defaults, 8) ||
1805 !tty_term_has(tty->term, TTYC_CSR) ||
1806 ctx->sx == 1 ||
1807 ctx->sy == 1 ||
1808 c->overlay_check != NULL) {
1809 tty_redraw_region(tty, ctx);
1810 return;
1811 }
1812
1813 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1814
1815 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1816 tty_margin_pane(tty, ctx);
1817
1818 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1819 if (!tty_use_margin(tty))
1820 tty_cursor(tty, 0, tty->rlower);
1821 else
1822 tty_cursor(tty, tty->rright, tty->rlower);
1823 for (i = 0; i < ctx->num; i++)
1824 tty_putc(tty, '\n');
1825 } else {
1826 if (tty->cy == UINT_MAX)
1827 tty_cursor(tty, 0, 0);
1828 else
1829 tty_cursor(tty, 0, tty->cy);
1830 tty_putcode1(tty, TTYC_INDN, ctx->num);
1831 }
1832 }
1833
1834 void
1835 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1836 {
1837 u_int i;
1838 struct client *c = tty->client;
1839
1840 if (ctx->bigger ||
1841 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1842 tty_fake_bce(tty, &ctx->defaults, 8) ||
1843 !tty_term_has(tty->term, TTYC_CSR) ||
1844 (!tty_term_has(tty->term, TTYC_RI) &&
1845 !tty_term_has(tty->term, TTYC_RIN)) ||
1846 ctx->sx == 1 ||
1847 ctx->sy == 1 ||
1848 c->overlay_check != NULL) {
1849 tty_redraw_region(tty, ctx);
1850 return;
1851 }
1852
1853 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1854
1855 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1856 tty_margin_pane(tty, ctx);
1857 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1858
1859 if (tty_term_has(tty->term, TTYC_RIN))
1860 tty_putcode1(tty, TTYC_RIN, ctx->num);
1861 else {
1862 for (i = 0; i < ctx->num; i++)
1863 tty_putcode(tty, TTYC_RI);
1864 }
1865 }
1866
1867 void
1868 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1869 {
1870 u_int px, py, nx, ny;
1871
1872 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1873
1874 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1875 tty_margin_off(tty);
1876
1877 px = 0;
1878 nx = ctx->sx;
1879 py = ctx->ocy + 1;
1880 ny = ctx->sy - ctx->ocy - 1;
1881
1882 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1883
1884 px = ctx->ocx;
1885 nx = ctx->sx - ctx->ocx;
1886 py = ctx->ocy;
1887
1888 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1889 }
1890
1891 void
1892 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1893 {
1894 u_int px, py, nx, ny;
1895
1896 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1897
1898 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1899 tty_margin_off(tty);
1900
1901 px = 0;
1902 nx = ctx->sx;
1903 py = 0;
1904 ny = ctx->ocy;
1905
1906 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1907
1908 px = 0;
1909 nx = ctx->ocx + 1;
1910 py = ctx->ocy;
1911
1912 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1913 }
1914
1915 void
1916 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1917 {
1918 u_int px, py, nx, ny;
1919
1920 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg);
1921
1922 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1923 tty_margin_off(tty);
1924
1925 px = 0;
1926 nx = ctx->sx;
1927 py = 0;
1928 ny = ctx->sy;
1929
1930 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1931 }
1932
1933 void
1934 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1935 {
1936 u_int i, j;
1937
1938 if (ctx->bigger) {
1939 ctx->redraw_cb(ctx);
1940 return;
1941 }
1942
1943 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette);
1944
1945 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1946 tty_margin_off(tty);
1947
1948 for (j = 0; j < ctx->sy; j++) {
1949 tty_cursor_pane(tty, ctx, 0, j);
1950 for (i = 0; i < ctx->sx; i++)
1951 tty_putc(tty, 'E');
1952 }
1953 }
1954
1955 void
1956 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1957 {
1958 const struct grid_cell *gcp = ctx->cell;
1959 struct screen *s = ctx->s;
1960 struct overlay_ranges r;
1961 u_int px, py, i, vis = 0;
1962
1963 px = ctx->xoff + ctx->ocx - ctx->wox;
1964 py = ctx->yoff + ctx->ocy - ctx->woy;
1965 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
1966 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
1967 return;
1968
1969 /* Handle partially obstructed wide characters. */
1970 if (gcp->data.width > 1) {
1971 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
1972 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
1973 vis += r.nx[i];
1974 if (vis < gcp->data.width) {
1975 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
1976 px, py, &ctx->defaults, ctx->palette);
1977 return;
1978 }
1979 }
1980
1981 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
1982 ctx->ocy == ctx->orlower &&
1983 tty_full_width(tty, ctx))
1984 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1985
1986 tty_margin_off(tty);
1987 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1988
1989 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette);
1990 }
1991
1992 void
1993 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
1994 {
1995 struct overlay_ranges r;
1996 u_int i, px, py, cx;
1997 char *cp = ctx->ptr;
1998
1999 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2000 return;
2001
2002 if (ctx->bigger &&
2003 (ctx->xoff + ctx->ocx < ctx->wox ||
2004 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2005 if (!ctx->wrapped ||
2006 !tty_full_width(tty, ctx) ||
2007 (tty->term->flags & TERM_NOAM) ||
2008 ctx->xoff + ctx->ocx != 0 ||
2009 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2010 tty->cx < tty->sx ||
2011 tty->cy == tty->rlower)
2012 tty_draw_pane(tty, ctx, ctx->ocy);
2013 else
2014 ctx->redraw_cb(ctx);
2015 return;
2016 }
2017
2018 tty_margin_off(tty);
2019 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2020 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette);
2021
2022 /* Get tty position from pane position for overlay check. */
2023 px = ctx->xoff + ctx->ocx - ctx->wox;
2024 py = ctx->yoff + ctx->ocy - ctx->woy;
2025
2026 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2027 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2028 if (r.nx[i] == 0)
2029 continue;
2030 /* Convert back to pane position for printing. */
2031 cx = r.px[i] - ctx->xoff + ctx->wox;
2032 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2033 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2034 }
2035 }
2036
2037 void
2038 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2039 {
2040 tty_set_selection(tty, ctx->ptr, ctx->num);
2041 }
2042
2043 void
2044 tty_set_selection(struct tty *tty, const char *buf, size_t len)
2045 {
2046 char *encoded;
2047 size_t size;
2048
2049 if (~tty->flags & TTY_STARTED)
2050 return;
2051 if (!tty_term_has(tty->term, TTYC_MS))
2052 return;
2053
2054 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2055 encoded = xmalloc(size);
2056
2057 b64_ntop(buf, len, encoded, size);
2058 tty_putcode_ptr2(tty, TTYC_MS, "", encoded);
2059 tty->client->redraw = EVBUFFER_LENGTH(tty->out);
2060
2061 free(encoded);
2062 }
2063
2064 void
2065 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2066 {
2067 tty_add(tty, ctx->ptr, ctx->num);
2068 tty_invalidate(tty);
2069 }
2070
2071 void
2072 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2073 {
2074 if (ctx->num == 0x11) {
2075 /*
2076 * This is an overlay and a command that moves the cursor so
2077 * start synchronized updates.
2078 */
2079 tty_sync_start(tty);
2080 } else if (~ctx->num & 0x10) {
2081 /*
2082 * This is a pane. If there is an overlay, always start;
2083 * otherwise, only if requested.
2084 */
2085 if (ctx->num || tty->client->overlay_draw != NULL)
2086 tty_sync_start(tty);
2087 }
2088 }
2089
2090 void
2091 tty_cell(struct tty *tty, const struct grid_cell *gc,
2092 const struct grid_cell *defaults, struct colour_palette *palette)
2093 {
2094 const struct grid_cell *gcp;
2095
2096 /* Skip last character if terminal is stupid. */
2097 if ((tty->term->flags & TERM_NOAM) &&
2098 tty->cy == tty->sy - 1 &&
2099 tty->cx == tty->sx - 1)
2100 return;
2101
2102 /* If this is a padding character, do nothing. */
2103 if (gc->flags & GRID_FLAG_PADDING)
2104 return;
2105
2106 /* Check the output codeset and apply attributes. */
2107 gcp = tty_check_codeset(tty, gc);
2108 tty_attributes(tty, gcp, defaults, palette);
2109
2110 /* If it is a single character, write with putc to handle ACS. */
2111 if (gcp->data.size == 1) {
2112 tty_attributes(tty, gcp, defaults, palette);
2113 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2114 return;
2115 tty_putc(tty, *gcp->data.data);
2116 return;
2117 }
2118
2119 /* Write the data. */
2120 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2121 }
2122
2123 void
2124 tty_reset(struct tty *tty)
2125 {
2126 struct grid_cell *gc = &tty->cell;
2127
2128 if (!grid_cells_equal(gc, &grid_default_cell)) {
2129 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2130 tty_putcode(tty, TTYC_RMACS);
2131 tty_putcode(tty, TTYC_SGR0);
2132 memcpy(gc, &grid_default_cell, sizeof *gc);
2133 }
2134 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2135 }
2136
2137 static void
2138 tty_invalidate(struct tty *tty)
2139 {
2140 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2141 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2142
2143 tty->cx = tty->cy = UINT_MAX;
2144 tty->rupper = tty->rleft = UINT_MAX;
2145 tty->rlower = tty->rright = UINT_MAX;
2146
2147 if (tty->flags & TTY_STARTED) {
2148 if (tty_use_margin(tty))
2149 tty_putcode(tty, TTYC_ENMG);
2150 tty_putcode(tty, TTYC_SGR0);
2151
2152 tty->mode = ALL_MODES;
2153 tty_update_mode(tty, MODE_CURSOR, NULL);
2154
2155 tty_cursor(tty, 0, 0);
2156 tty_region_off(tty);
2157 tty_margin_off(tty);
2158 } else
2159 tty->mode = MODE_CURSOR;
2160 }
2161
2162 /* Turn off margin. */
2163 void
2164 tty_region_off(struct tty *tty)
2165 {
2166 tty_region(tty, 0, tty->sy - 1);
2167 }
2168
2169 /* Set region inside pane. */
2170 static void
2171 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2172 u_int rlower)
2173 {
2174 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2175 ctx->yoff + rlower - ctx->woy);
2176 }
2177
2178 /* Set region at absolute position. */
2179 static void
2180 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2181 {
2182 if (tty->rlower == rlower && tty->rupper == rupper)
2183 return;
2184 if (!tty_term_has(tty->term, TTYC_CSR))
2185 return;
2186
2187 tty->rupper = rupper;
2188 tty->rlower = rlower;
2189
2190 /*
2191 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2192 * 0,0 if it is beyond the last column (they do not reset their wrap
2193 * flag so further output causes a line feed). As a workaround, do an
2194 * explicit move to 0 first.
2195 */
2196 if (tty->cx >= tty->sx) {
2197 if (tty->cy == UINT_MAX)
2198 tty_cursor(tty, 0, 0);
2199 else
2200 tty_cursor(tty, 0, tty->cy);
2201 }
2202
2203 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2204 tty->cx = tty->cy = UINT_MAX;
2205 }
2206
2207 /* Turn off margin. */
2208 void
2209 tty_margin_off(struct tty *tty)
2210 {
2211 tty_margin(tty, 0, tty->sx - 1);
2212 }
2213
2214 /* Set margin inside pane. */
2215 static void
2216 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2217 {
2218 tty_margin(tty, ctx->xoff - ctx->wox,
2219 ctx->xoff + ctx->sx - 1 - ctx->wox);
2220 }
2221
2222 /* Set margin at absolute position. */
2223 static void
2224 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2225 {
2226 if (!tty_use_margin(tty))
2227 return;
2228 if (tty->rleft == rleft && tty->rright == rright)
2229 return;
2230
2231 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2232
2233 tty->rleft = rleft;
2234 tty->rright = rright;
2235
2236 if (rleft == 0 && rright == tty->sx - 1)
2237 tty_putcode(tty, TTYC_CLMG);
2238 else
2239 tty_putcode2(tty, TTYC_CMG, rleft, rright);
2240 tty->cx = tty->cy = UINT_MAX;
2241 }
2242
2243 /*
2244 * Move the cursor, unless it would wrap itself when the next character is
2245 * printed.
2246 */
2247 static void
2248 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2249 u_int cx, u_int cy)
2250 {
2251 if (!ctx->wrapped ||
2252 !tty_full_width(tty, ctx) ||
2253 (tty->term->flags & TERM_NOAM) ||
2254 ctx->xoff + cx != 0 ||
2255 ctx->yoff + cy != tty->cy + 1 ||
2256 tty->cx < tty->sx ||
2257 tty->cy == tty->rlower)
2258 tty_cursor_pane(tty, ctx, cx, cy);
2259 else
2260 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2261 }
2262
2263 /* Move cursor inside pane. */
2264 static void
2265 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2266 {
2267 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2268 }
2269
2270 /* Move cursor to absolute position. */
2271 void
2272 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2273 {
2274 struct tty_term *term = tty->term;
2275 u_int thisx, thisy;
2276 int change;
2277
2278 if (tty->flags & TTY_BLOCK)
2279 return;
2280
2281 if (cx > tty->sx - 1)
2282 cx = tty->sx - 1;
2283
2284 thisx = tty->cx;
2285 thisy = tty->cy;
2286
2287 /* No change. */
2288 if (cx == thisx && cy == thisy)
2289 return;
2290
2291 /* Very end of the line, just use absolute movement. */
2292 if (thisx > tty->sx - 1)
2293 goto absolute;
2294
2295 /* Move to home position (0, 0). */
2296 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2297 tty_putcode(tty, TTYC_HOME);
2298 goto out;
2299 }
2300
2301 /* Zero on the next line. */
2302 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2303 (!tty_use_margin(tty) || tty->rleft == 0)) {
2304 tty_putc(tty, '\r');
2305 tty_putc(tty, '\n');
2306 goto out;
2307 }
2308
2309 /* Moving column or row. */
2310 if (cy == thisy) {
2311 /*
2312 * Moving column only, row staying the same.
2313 */
2314
2315 /* To left edge. */
2316 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2317 tty_putc(tty, '\r');
2318 goto out;
2319 }
2320
2321 /* One to the left. */
2322 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2323 tty_putcode(tty, TTYC_CUB1);
2324 goto out;
2325 }
2326
2327 /* One to the right. */
2328 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2329 tty_putcode(tty, TTYC_CUF1);
2330 goto out;
2331 }
2332
2333 /* Calculate difference. */
2334 change = thisx - cx; /* +ve left, -ve right */
2335
2336 /*
2337 * Use HPA if change is larger than absolute, otherwise move
2338 * the cursor with CUB/CUF.
2339 */
2340 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2341 tty_putcode1(tty, TTYC_HPA, cx);
2342 goto out;
2343 } else if (change > 0 &&
2344 tty_term_has(term, TTYC_CUB) &&
2345 !tty_use_margin(tty)) {
2346 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2347 tty_putcode(tty, TTYC_CUB1);
2348 tty_putcode(tty, TTYC_CUB1);
2349 goto out;
2350 }
2351 tty_putcode1(tty, TTYC_CUB, change);
2352 goto out;
2353 } else if (change < 0 &&
2354 tty_term_has(term, TTYC_CUF) &&
2355 !tty_use_margin(tty)) {
2356 tty_putcode1(tty, TTYC_CUF, -change);
2357 goto out;
2358 }
2359 } else if (cx == thisx) {
2360 /*
2361 * Moving row only, column staying the same.
2362 */
2363
2364 /* One above. */
2365 if (thisy != tty->rupper &&
2366 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2367 tty_putcode(tty, TTYC_CUU1);
2368 goto out;
2369 }
2370
2371 /* One below. */
2372 if (thisy != tty->rlower &&
2373 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2374 tty_putcode(tty, TTYC_CUD1);
2375 goto out;
2376 }
2377
2378 /* Calculate difference. */
2379 change = thisy - cy; /* +ve up, -ve down */
2380
2381 /*
2382 * Try to use VPA if change is larger than absolute or if this
2383 * change would cross the scroll region, otherwise use CUU/CUD.
2384 */
2385 if ((u_int) abs(change) > cy ||
2386 (change < 0 && cy - change > tty->rlower) ||
2387 (change > 0 && cy - change < tty->rupper)) {
2388 if (tty_term_has(term, TTYC_VPA)) {
2389 tty_putcode1(tty, TTYC_VPA, cy);
2390 goto out;
2391 }
2392 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2393 tty_putcode1(tty, TTYC_CUU, change);
2394 goto out;
2395 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2396 tty_putcode1(tty, TTYC_CUD, -change);
2397 goto out;
2398 }
2399 }
2400
2401 absolute:
2402 /* Absolute movement. */
2403 tty_putcode2(tty, TTYC_CUP, cy, cx);
2404
2405 out:
2406 tty->cx = cx;
2407 tty->cy = cy;
2408 }
2409
2410 void
2411 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2412 const struct grid_cell *defaults, struct colour_palette *palette)
2413 {
2414 struct grid_cell *tc = &tty->cell, gc2;
2415 int changed;
2416
2417 /* Copy cell and update default colours. */
2418 memcpy(&gc2, gc, sizeof gc2);
2419 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2420 if (gc2.fg == 8)
2421 gc2.fg = defaults->fg;
2422 if (gc2.bg == 8)
2423 gc2.bg = defaults->bg;
2424 }
2425
2426 /* Ignore cell if it is the same as the last one. */
2427 if (gc2.attr == tty->last_cell.attr &&
2428 gc2.fg == tty->last_cell.fg &&
2429 gc2.bg == tty->last_cell.bg &&
2430 gc2.us == tty->last_cell.us)
2431 return;
2432
2433 /*
2434 * If no setab, try to use the reverse attribute as a best-effort for a
2435 * non-default background. This is a bit of a hack but it doesn't do
2436 * any serious harm and makes a couple of applications happier.
2437 */
2438 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2439 if (gc2.attr & GRID_ATTR_REVERSE) {
2440 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2441 gc2.attr &= ~GRID_ATTR_REVERSE;
2442 } else {
2443 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2444 gc2.attr |= GRID_ATTR_REVERSE;
2445 }
2446 }
2447
2448 /* Fix up the colours if necessary. */
2449 tty_check_fg(tty, palette, &gc2);
2450 tty_check_bg(tty, palette, &gc2);
2451 tty_check_us(tty, palette, &gc2);
2452
2453 /*
2454 * If any bits are being cleared or the underline colour is now default,
2455 * reset everything.
2456 */
2457 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2458 tty_reset(tty);
2459
2460 /*
2461 * Set the colours. This may call tty_reset() (so it comes next) and
2462 * may add to (NOT remove) the desired attributes.
2463 */
2464 tty_colours(tty, &gc2);
2465
2466 /* Filter out attribute bits already set. */
2467 changed = gc2.attr & ~tc->attr;
2468 tc->attr = gc2.attr;
2469
2470 /* Set the attributes. */
2471 if (changed & GRID_ATTR_BRIGHT)
2472 tty_putcode(tty, TTYC_BOLD);
2473 if (changed & GRID_ATTR_DIM)
2474 tty_putcode(tty, TTYC_DIM);
2475 if (changed & GRID_ATTR_ITALICS)
2476 tty_set_italics(tty);
2477 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2478 if ((changed & GRID_ATTR_UNDERSCORE) ||
2479 !tty_term_has(tty->term, TTYC_SMULX))
2480 tty_putcode(tty, TTYC_SMUL);
2481 else if (changed & GRID_ATTR_UNDERSCORE_2)
2482 tty_putcode1(tty, TTYC_SMULX, 2);
2483 else if (changed & GRID_ATTR_UNDERSCORE_3)
2484 tty_putcode1(tty, TTYC_SMULX, 3);
2485 else if (changed & GRID_ATTR_UNDERSCORE_4)
2486 tty_putcode1(tty, TTYC_SMULX, 4);
2487 else if (changed & GRID_ATTR_UNDERSCORE_5)
2488 tty_putcode1(tty, TTYC_SMULX, 5);
2489 }
2490 if (changed & GRID_ATTR_BLINK)
2491 tty_putcode(tty, TTYC_BLINK);
2492 if (changed & GRID_ATTR_REVERSE) {
2493 if (tty_term_has(tty->term, TTYC_REV))
2494 tty_putcode(tty, TTYC_REV);
2495 else if (tty_term_has(tty->term, TTYC_SMSO))
2496 tty_putcode(tty, TTYC_SMSO);
2497 }
2498 if (changed & GRID_ATTR_HIDDEN)
2499 tty_putcode(tty, TTYC_INVIS);
2500 if (changed & GRID_ATTR_STRIKETHROUGH)
2501 tty_putcode(tty, TTYC_SMXX);
2502 if (changed & GRID_ATTR_OVERLINE)
2503 tty_putcode(tty, TTYC_SMOL);
2504 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2505 tty_putcode(tty, TTYC_SMACS);
2506
2507 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2508 }
2509
2510 static void
2511 tty_colours(struct tty *tty, const struct grid_cell *gc)
2512 {
2513 struct grid_cell *tc = &tty->cell;
2514 int have_ax;
2515
2516 /* No changes? Nothing is necessary. */
2517 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2518 return;
2519
2520 /*
2521 * Is either the default colour? This is handled specially because the
2522 * best solution might be to reset both colours to default, in which
2523 * case if only one is default need to fall onward to set the other
2524 * colour.
2525 */
2526 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2527 /*
2528 * If don't have AX but do have op, send sgr0 (op can't
2529 * actually be used because it is sometimes the same as sgr0
2530 * and sometimes isn't). This resets both colours to default.
2531 *
2532 * Otherwise, try to set the default colour only as needed.
2533 */
2534 have_ax = tty_term_flag(tty->term, TTYC_AX);
2535 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2536 tty_reset(tty);
2537 else {
2538 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2539 if (have_ax)
2540 tty_puts(tty, "\033[39m");
2541 else if (tc->fg != 7)
2542 tty_putcode1(tty, TTYC_SETAF, 7);
2543 tc->fg = gc->fg;
2544 }
2545 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2546 if (have_ax)
2547 tty_puts(tty, "\033[49m");
2548 else if (tc->bg != 0)
2549 tty_putcode1(tty, TTYC_SETAB, 0);
2550 tc->bg = gc->bg;
2551 }
2552 }
2553 }
2554
2555 /* Set the foreground colour. */
2556 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2557 tty_colours_fg(tty, gc);
2558
2559 /*
2560 * Set the background colour. This must come after the foreground as
2561 * tty_colour_fg() can call tty_reset().
2562 */
2563 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2564 tty_colours_bg(tty, gc);
2565
2566 /* Set the underscore colour. */
2567 if (gc->us != tc->us)
2568 tty_colours_us(tty, gc);
2569 }
2570
2571 static void
2572 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2573 struct grid_cell *gc)
2574 {
2575 u_char r, g, b;
2576 u_int colours;
2577 int c;
2578
2579 /*
2580 * Perform substitution if this pane has a palette. If the bright
2581 * attribute is set, use the bright entry in the palette by changing to
2582 * the aixterm colour.
2583 */
2584 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2585 c = gc->fg;
2586 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT)
2587 c += 90;
2588 if ((c = colour_palette_get(palette, c)) != -1)
2589 gc->fg = c;
2590 }
2591
2592 /* Is this a 24-bit colour? */
2593 if (gc->fg & COLOUR_FLAG_RGB) {
2594 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2595 if (tty->term->flags & TERM_RGBCOLOURS)
2596 return;
2597 colour_split_rgb(gc->fg, &r, &g, &b);
2598 gc->fg = colour_find_rgb(r, g, b);
2599 }
2600
2601 /* How many colours does this terminal have? */
2602 if (tty->term->flags & TERM_256COLOURS)
2603 colours = 256;
2604 else
2605 colours = tty_term_number(tty->term, TTYC_COLORS);
2606
2607 /* Is this a 256-colour colour? */
2608 if (gc->fg & COLOUR_FLAG_256) {
2609 /* And not a 256 colour mode? */
2610 if (colours < 256) {
2611 gc->fg = colour_256to16(gc->fg);
2612 if (gc->fg & 8) {
2613 gc->fg &= 7;
2614 if (colours >= 16)
2615 gc->fg += 90;
2616 }
2617 }
2618 return;
2619 }
2620
2621 /* Is this an aixterm colour? */
2622 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2623 gc->fg -= 90;
2624 gc->attr |= GRID_ATTR_BRIGHT;
2625 }
2626 }
2627
2628 static void
2629 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2630 struct grid_cell *gc)
2631 {
2632 u_char r, g, b;
2633 u_int colours;
2634 int c;
2635
2636 /* Perform substitution if this pane has a palette. */
2637 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2638 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2639 gc->bg = c;
2640 }
2641
2642 /* Is this a 24-bit colour? */
2643 if (gc->bg & COLOUR_FLAG_RGB) {
2644 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2645 if (tty->term->flags & TERM_RGBCOLOURS)
2646 return;
2647 colour_split_rgb(gc->bg, &r, &g, &b);
2648 gc->bg = colour_find_rgb(r, g, b);
2649 }
2650
2651 /* How many colours does this terminal have? */
2652 if (tty->term->flags & TERM_256COLOURS)
2653 colours = 256;
2654 else
2655 colours = tty_term_number(tty->term, TTYC_COLORS);
2656
2657 /* Is this a 256-colour colour? */
2658 if (gc->bg & COLOUR_FLAG_256) {
2659 /*
2660 * And not a 256 colour mode? Translate to 16-colour
2661 * palette. Bold background doesn't exist portably, so just
2662 * discard the bold bit if set.
2663 */
2664 if (colours < 256) {
2665 gc->bg = colour_256to16(gc->bg);
2666 if (gc->bg & 8) {
2667 gc->bg &= 7;
2668 if (colours >= 16)
2669 gc->bg += 90;
2670 }
2671 }
2672 return;
2673 }
2674
2675 /* Is this an aixterm colour? */
2676 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2677 gc->bg -= 90;
2678 }
2679
2680 static void
2681 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2682 struct grid_cell *gc)
2683 {
2684 int c;
2685
2686 /* Perform substitution if this pane has a palette. */
2687 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2688 if ((c = colour_palette_get(palette, gc->us)) != -1)
2689 gc->us = c;
2690 }
2691
2692 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2693 if (gc->us & COLOUR_FLAG_256)
2694 gc->us = colour_256toRGB (gc->us);
2695 }
2696
2697 static void
2698 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2699 {
2700 struct grid_cell *tc = &tty->cell;
2701 char s[32];
2702
2703 /* Is this a 24-bit or 256-colour colour? */
2704 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2705 if (tty_try_colour(tty, gc->fg, "38") == 0)
2706 goto save;
2707 /* Should not get here, already converted in tty_check_fg. */
2708 return;
2709 }
2710
2711 /* Is this an aixterm bright colour? */
2712 if (gc->fg >= 90 && gc->fg <= 97) {
2713 if (tty->term->flags & TERM_256COLOURS) {
2714 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2715 tty_puts(tty, s);
2716 } else
2717 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2718 goto save;
2719 }
2720
2721 /* Otherwise set the foreground colour. */
2722 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2723
2724 save:
2725 /* Save the new values in the terminal current cell. */
2726 tc->fg = gc->fg;
2727 }
2728
2729 static void
2730 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2731 {
2732 struct grid_cell *tc = &tty->cell;
2733 char s[32];
2734
2735 /* Is this a 24-bit or 256-colour colour? */
2736 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2737 if (tty_try_colour(tty, gc->bg, "48") == 0)
2738 goto save;
2739 /* Should not get here, already converted in tty_check_bg. */
2740 return;
2741 }
2742
2743 /* Is this an aixterm bright colour? */
2744 if (gc->bg >= 90 && gc->bg <= 97) {
2745 if (tty->term->flags & TERM_256COLOURS) {
2746 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2747 tty_puts(tty, s);
2748 } else
2749 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2750 goto save;
2751 }
2752
2753 /* Otherwise set the background colour. */
2754 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2755
2756 save:
2757 /* Save the new values in the terminal current cell. */
2758 tc->bg = gc->bg;
2759 }
2760
2761 static void
2762 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2763 {
2764 struct grid_cell *tc = &tty->cell;
2765 u_int c;
2766 u_char r, g, b;
2767
2768 /* Clear underline colour. */
2769 if (gc->us == 0) {
2770 tty_putcode(tty, TTYC_OL);
2771 goto save;
2772 }
2773
2774 /* Must be an RGB colour - this should never happen. */
2775 if (~gc->us & COLOUR_FLAG_RGB)
2776 return;
2777
2778 /*
2779 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2780 * capability format. Calculate the colour value.
2781 */
2782 colour_split_rgb(gc->us, &r, &g, &b);
2783 c = (65536 * r) + (256 * g) + b;
2784
2785 /*
2786 * Write the colour. Only use setal if the RGB flag is set because the
2787 * non-RGB version may be wrong.
2788 */
2789 if (tty_term_has(tty->term, TTYC_SETULC))
2790 tty_putcode1(tty, TTYC_SETULC, c);
2791 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2792 tty_term_has(tty->term, TTYC_RGB))
2793 tty_putcode1(tty, TTYC_SETAL, c);
2794
2795 save:
2796 /* Save the new values in the terminal current cell. */
2797 tc->us = gc->us;
2798 }
2799
2800 static int
2801 tty_try_colour(struct tty *tty, int colour, const char *type)
2802 {
2803 u_char r, g, b;
2804
2805 if (colour & COLOUR_FLAG_256) {
2806 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2807 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2808 else if (tty_term_has(tty->term, TTYC_SETAB))
2809 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2810 return (0);
2811 }
2812
2813 if (colour & COLOUR_FLAG_RGB) {
2814 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2815 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2816 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2817 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2818 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2819 return (0);
2820 }
2821
2822 return (-1);
2823 }
2824
2825 static void
2826 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2827 {
2828 memcpy(gc, &grid_default_cell, sizeof *gc);
2829 gc->fg = wp->palette.fg;
2830 gc->bg = wp->palette.bg;
2831 }
2832
2833 void
2834 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2835 {
2836 struct options *oo = wp->options;
2837 struct format_tree *ft;
2838
2839 memcpy(gc, &grid_default_cell, sizeof *gc);
2840
2841 if (wp->flags & PANE_STYLECHANGED) {
2842 log_debug("%%%u: style changed", wp->id);
2843 wp->flags &= ~PANE_STYLECHANGED;
2844
2845 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
2846 FORMAT_NOJOBS);
2847 format_defaults(ft, NULL, NULL, NULL, wp);
2848 tty_window_default_style(&wp->cached_active_gc, wp);
2849 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
2850 tty_window_default_style(&wp->cached_gc, wp);
2851 style_add(&wp->cached_gc, oo, "window-style", ft);
2852 format_free(ft);
2853 }
2854
2855 if (gc->fg == 8) {
2856 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
2857 gc->fg = wp->cached_active_gc.fg;
2858 else
2859 gc->fg = wp->cached_gc.fg;
2860 }
2861
2862 if (gc->bg == 8) {
2863 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
2864 gc->bg = wp->cached_active_gc.bg;
2865 else
2866 gc->bg = wp->cached_gc.bg;
2867 }
2868 }
2869
2870 static void
2871 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
2872 struct colour_palette *palette, u_int bg)
2873 {
2874 struct grid_cell gc;
2875
2876 memcpy(&gc, &grid_default_cell, sizeof gc);
2877 gc.bg = bg;
2878 tty_attributes(tty, &gc, defaults, palette);
2879 }