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Use active pane in target window not current window for +/-. GitHub
[tmux-openbsd.git] / tty.c
blob1394075d42a4a1f7d678db98f301e46e4e6c84d4
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/ioctl.h>
21
22 #include <netinet/in.h>
23
24 #include <curses.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <resolv.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <termios.h>
31 #include <unistd.h>
32
33 #include "tmux.h"
34
35 static int tty_log_fd = -1;
36
37 static int tty_client_ready(struct client *);
38
39 static void tty_set_italics(struct tty *);
40 static int tty_try_colour(struct tty *, int, const char *);
41 static void tty_force_cursor_colour(struct tty *, int);
42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
43 u_int);
44 static void tty_cursor_pane_unless_wrap(struct tty *,
45 const struct tty_ctx *, u_int, u_int);
46 static void tty_invalidate(struct tty *);
47 static void tty_colours(struct tty *, const struct grid_cell *);
48 static void tty_check_fg(struct tty *, struct colour_palette *,
49 struct grid_cell *);
50 static void tty_check_bg(struct tty *, struct colour_palette *,
51 struct grid_cell *);
52 static void tty_check_us(struct tty *, struct colour_palette *,
53 struct grid_cell *);
54 static void tty_colours_fg(struct tty *, const struct grid_cell *);
55 static void tty_colours_bg(struct tty *, const struct grid_cell *);
56 static void tty_colours_us(struct tty *, const struct grid_cell *);
57
58 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
59 u_int);
60 static void tty_region(struct tty *, u_int, u_int);
61 static void tty_margin_pane(struct tty *, const struct tty_ctx *);
62 static void tty_margin(struct tty *, u_int, u_int);
63 static int tty_large_region(struct tty *, const struct tty_ctx *);
64 static int tty_fake_bce(const struct tty *, const struct grid_cell *,
65 u_int);
66 static void tty_redraw_region(struct tty *, const struct tty_ctx *);
67 static void tty_emulate_repeat(struct tty *, enum tty_code_code,
68 enum tty_code_code, u_int);
69 static void tty_repeat_space(struct tty *, u_int);
70 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
71 static void tty_default_attributes(struct tty *, const struct grid_cell *,
72 struct colour_palette *, u_int, struct hyperlinks *);
73 static int tty_check_overlay(struct tty *, u_int, u_int);
74 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
75 struct overlay_ranges *);
76
77 #define tty_use_margin(tty) \
78 (tty->term->flags & TERM_DECSLRM)
79 #define tty_full_width(tty, ctx) \
80 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
81
82 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
83 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
84 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
85
86 #define TTY_QUERY_TIMEOUT 5
87
88 void
89 tty_create_log(void)
90 {
91 char name[64];
92
93 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
94
95 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
96 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
97 fatal("fcntl failed");
98 }
99
100 int
101 tty_init(struct tty *tty, struct client *c)
102 {
103 if (!isatty(c->fd))
104 return (-1);
105
106 memset(tty, 0, sizeof *tty);
107 tty->client = c;
108
109 tty->cstyle = SCREEN_CURSOR_DEFAULT;
110 tty->ccolour = -1;
111
112 if (tcgetattr(c->fd, &tty->tio) != 0)
113 return (-1);
114 return (0);
115 }
116
117 void
118 tty_resize(struct tty *tty)
119 {
120 struct client *c = tty->client;
121 struct winsize ws;
122 u_int sx, sy, xpixel, ypixel;
123
124 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
125 sx = ws.ws_col;
126 if (sx == 0) {
127 sx = 80;
128 xpixel = 0;
129 } else
130 xpixel = ws.ws_xpixel / sx;
131 sy = ws.ws_row;
132 if (sy == 0) {
133 sy = 24;
134 ypixel = 0;
135 } else
136 ypixel = ws.ws_ypixel / sy;
137 } else {
138 sx = 80;
139 sy = 24;
140 xpixel = 0;
141 ypixel = 0;
142 }
143 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
144 xpixel, ypixel);
145 tty_set_size(tty, sx, sy, xpixel, ypixel);
146 tty_invalidate(tty);
147 }
148
149 void
150 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
151 {
152 tty->sx = sx;
153 tty->sy = sy;
154 tty->xpixel = xpixel;
155 tty->ypixel = ypixel;
156 }
157
158 static void
159 tty_read_callback(__unused int fd, __unused short events, void *data)
160 {
161 struct tty *tty = data;
162 struct client *c = tty->client;
163 const char *name = c->name;
164 size_t size = EVBUFFER_LENGTH(tty->in);
165 int nread;
166
167 nread = evbuffer_read(tty->in, c->fd, -1);
168 if (nread == 0 || nread == -1) {
169 if (nread == 0)
170 log_debug("%s: read closed", name);
171 else
172 log_debug("%s: read error: %s", name, strerror(errno));
173 event_del(&tty->event_in);
174 server_client_lost(tty->client);
175 return;
176 }
177 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
178
179 while (tty_keys_next(tty))
180 ;
181 }
182
183 static void
184 tty_timer_callback(__unused int fd, __unused short events, void *data)
185 {
186 struct tty *tty = data;
187 struct client *c = tty->client;
188 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
189
190 log_debug("%s: %zu discarded", c->name, tty->discarded);
191
192 c->flags |= CLIENT_ALLREDRAWFLAGS;
193 c->discarded += tty->discarded;
194
195 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
196 tty->flags &= ~TTY_BLOCK;
197 tty_invalidate(tty);
198 return;
199 }
200 tty->discarded = 0;
201 evtimer_add(&tty->timer, &tv);
202 }
203
204 static int
205 tty_block_maybe(struct tty *tty)
206 {
207 struct client *c = tty->client;
208 size_t size = EVBUFFER_LENGTH(tty->out);
209 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
210
211 if (size == 0)
212 tty->flags &= ~TTY_NOBLOCK;
213 else if (tty->flags & TTY_NOBLOCK)
214 return (0);
215
216 if (size < TTY_BLOCK_START(tty))
217 return (0);
218
219 if (tty->flags & TTY_BLOCK)
220 return (1);
221 tty->flags |= TTY_BLOCK;
222
223 log_debug("%s: can't keep up, %zu discarded", c->name, size);
224
225 evbuffer_drain(tty->out, size);
226 c->discarded += size;
227
228 tty->discarded = 0;
229 evtimer_add(&tty->timer, &tv);
230 return (1);
231 }
232
233 static void
234 tty_write_callback(__unused int fd, __unused short events, void *data)
235 {
236 struct tty *tty = data;
237 struct client *c = tty->client;
238 size_t size = EVBUFFER_LENGTH(tty->out);
239 int nwrite;
240
241 nwrite = evbuffer_write(tty->out, c->fd);
242 if (nwrite == -1)
243 return;
244 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
245
246 if (c->redraw > 0) {
247 if ((size_t)nwrite >= c->redraw)
248 c->redraw = 0;
249 else
250 c->redraw -= nwrite;
251 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
252 c->redraw);
253 } else if (tty_block_maybe(tty))
254 return;
255
256 if (EVBUFFER_LENGTH(tty->out) != 0)
257 event_add(&tty->event_out, NULL);
258 }
259
260 int
261 tty_open(struct tty *tty, char **cause)
262 {
263 struct client *c = tty->client;
264
265 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
266 c->term_ncaps, &c->term_features, cause);
267 if (tty->term == NULL) {
268 tty_close(tty);
269 return (-1);
270 }
271 tty->flags |= TTY_OPENED;
272
273 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
274
275 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
276 tty_read_callback, tty);
277 tty->in = evbuffer_new();
278 if (tty->in == NULL)
279 fatal("out of memory");
280
281 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
282 tty->out = evbuffer_new();
283 if (tty->out == NULL)
284 fatal("out of memory");
285
286 evtimer_set(&tty->timer, tty_timer_callback, tty);
287
288 tty_start_tty(tty);
289
290 tty_keys_build(tty);
291
292 return (0);
293 }
294
295 static void
296 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
297 {
298 struct tty *tty = data;
299 struct client *c = tty->client;
300
301 log_debug("%s: start timer fired", c->name);
302 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEXDA)) == 0)
303 tty_update_features(tty);
304 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
305 }
306
307 void
308 tty_start_tty(struct tty *tty)
309 {
310 struct client *c = tty->client;
311 struct termios tio;
312 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
313
314 setblocking(c->fd, 0);
315 event_add(&tty->event_in, NULL);
316
317 memcpy(&tio, &tty->tio, sizeof tio);
318 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
319 tio.c_iflag |= IGNBRK;
320 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
321 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
322 ECHOKE|ISIG);
323 tio.c_cc[VMIN] = 1;
324 tio.c_cc[VTIME] = 0;
325 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
326 tcflush(c->fd, TCOFLUSH);
327
328 tty_putcode(tty, TTYC_SMCUP);
329
330 tty_putcode(tty, TTYC_SMKX);
331 tty_putcode(tty, TTYC_CLEAR);
332
333 if (tty_acs_needed(tty)) {
334 log_debug("%s: using capabilities for ACS", c->name);
335 tty_putcode(tty, TTYC_ENACS);
336 } else
337 log_debug("%s: using UTF-8 for ACS", c->name);
338
339 tty_putcode(tty, TTYC_CNORM);
340 if (tty_term_has(tty->term, TTYC_KMOUS)) {
341 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
342 tty_puts(tty, "\033[?1006l\033[?1005l");
343 }
344
345 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
346 evtimer_add(&tty->start_timer, &tv);
347
348 tty->flags |= TTY_STARTED;
349 tty_invalidate(tty);
350
351 if (tty->ccolour != -1)
352 tty_force_cursor_colour(tty, -1);
353
354 tty->mouse_drag_flag = 0;
355 tty->mouse_drag_update = NULL;
356 tty->mouse_drag_release = NULL;
357 }
358
359 void
360 tty_send_requests(struct tty *tty)
361 {
362 if (~tty->flags & TTY_STARTED)
363 return;
364
365 if (tty->term->flags & TERM_VT100LIKE) {
366 if (~tty->flags & TTY_HAVEDA)
367 tty_puts(tty, "\033[>c");
368 if (~tty->flags & TTY_HAVEXDA)
369 tty_puts(tty, "\033[>q");
370 } else
371 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
372 }
373
374 void
375 tty_stop_tty(struct tty *tty)
376 {
377 struct client *c = tty->client;
378 struct winsize ws;
379
380 if (!(tty->flags & TTY_STARTED))
381 return;
382 tty->flags &= ~TTY_STARTED;
383
384 evtimer_del(&tty->start_timer);
385
386 event_del(&tty->timer);
387 tty->flags &= ~TTY_BLOCK;
388
389 event_del(&tty->event_in);
390 event_del(&tty->event_out);
391
392 /*
393 * Be flexible about error handling and try not kill the server just
394 * because the fd is invalid. Things like ssh -t can easily leave us
395 * with a dead tty.
396 */
397 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
398 return;
399 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
400 return;
401
402 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
403 if (tty_acs_needed(tty))
404 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
405 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
406 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
407 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
408 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
409 if (tty_term_has(tty->term, TTYC_SE))
410 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
411 else if (tty_term_has(tty->term, TTYC_SS))
412 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
413 }
414 if (tty->mode & MODE_BRACKETPASTE)
415 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
416 if (tty->ccolour != -1)
417 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
418
419 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
420 if (tty_term_has(tty->term, TTYC_KMOUS)) {
421 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
422 tty_raw(tty, "\033[?1006l\033[?1005l");
423 }
424
425 if (tty->term->flags & TERM_VT100LIKE)
426 tty_raw(tty, "\033[?7727l");
427 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
428 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
429
430 if (tty_use_margin(tty))
431 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
432 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
433
434 setblocking(c->fd, 1);
435 }
436
437 void
438 tty_close(struct tty *tty)
439 {
440 if (event_initialized(&tty->key_timer))
441 evtimer_del(&tty->key_timer);
442 tty_stop_tty(tty);
443
444 if (tty->flags & TTY_OPENED) {
445 evbuffer_free(tty->in);
446 event_del(&tty->event_in);
447 evbuffer_free(tty->out);
448 event_del(&tty->event_out);
449
450 tty_term_free(tty->term);
451 tty_keys_free(tty);
452
453 tty->flags &= ~TTY_OPENED;
454 }
455 }
456
457 void
458 tty_free(struct tty *tty)
459 {
460 tty_close(tty);
461 }
462
463 void
464 tty_update_features(struct tty *tty)
465 {
466 struct client *c = tty->client;
467
468 if (tty_apply_features(tty->term, c->term_features))
469 tty_term_apply_overrides(tty->term);
470
471 if (tty_use_margin(tty))
472 tty_putcode(tty, TTYC_ENMG);
473 if (options_get_number(global_options, "extended-keys"))
474 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
475 if (options_get_number(global_options, "focus-events"))
476 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
477 if (tty->term->flags & TERM_VT100LIKE)
478 tty_puts(tty, "\033[?7727h");
479 }
480
481 void
482 tty_raw(struct tty *tty, const char *s)
483 {
484 struct client *c = tty->client;
485 ssize_t n, slen;
486 u_int i;
487
488 slen = strlen(s);
489 for (i = 0; i < 5; i++) {
490 n = write(c->fd, s, slen);
491 if (n >= 0) {
492 s += n;
493 slen -= n;
494 if (slen == 0)
495 break;
496 } else if (n == -1 && errno != EAGAIN)
497 break;
498 usleep(100);
499 }
500 }
501
502 void
503 tty_putcode(struct tty *tty, enum tty_code_code code)
504 {
505 tty_puts(tty, tty_term_string(tty->term, code));
506 }
507
508 void
509 tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
510 {
511 if (a < 0)
512 return;
513 tty_puts(tty, tty_term_string1(tty->term, code, a));
514 }
515
516 void
517 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
518 {
519 if (a < 0 || b < 0)
520 return;
521 tty_puts(tty, tty_term_string2(tty->term, code, a, b));
522 }
523
524 void
525 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
526 {
527 if (a < 0 || b < 0 || c < 0)
528 return;
529 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
530 }
531
532 void
533 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
534 {
535 if (a != NULL)
536 tty_puts(tty, tty_term_ptr1(tty->term, code, a));
537 }
538
539 void
540 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
541 const void *b)
542 {
543 if (a != NULL && b != NULL)
544 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
545 }
546
547 static void
548 tty_add(struct tty *tty, const char *buf, size_t len)
549 {
550 struct client *c = tty->client;
551
552 if (tty->flags & TTY_BLOCK) {
553 tty->discarded += len;
554 return;
555 }
556
557 evbuffer_add(tty->out, buf, len);
558 log_debug("%s: %.*s", c->name, (int)len, buf);
559 c->written += len;
560
561 if (tty_log_fd != -1)
562 write(tty_log_fd, buf, len);
563 if (tty->flags & TTY_STARTED)
564 event_add(&tty->event_out, NULL);
565 }
566
567 void
568 tty_puts(struct tty *tty, const char *s)
569 {
570 if (*s != '\0')
571 tty_add(tty, s, strlen(s));
572 }
573
574 void
575 tty_putc(struct tty *tty, u_char ch)
576 {
577 const char *acs;
578
579 if ((tty->term->flags & TERM_NOAM) &&
580 ch >= 0x20 && ch != 0x7f &&
581 tty->cy == tty->sy - 1 &&
582 tty->cx + 1 >= tty->sx)
583 return;
584
585 if (tty->cell.attr & GRID_ATTR_CHARSET) {
586 acs = tty_acs_get(tty, ch);
587 if (acs != NULL)
588 tty_add(tty, acs, strlen(acs));
589 else
590 tty_add(tty, &ch, 1);
591 } else
592 tty_add(tty, &ch, 1);
593
594 if (ch >= 0x20 && ch != 0x7f) {
595 if (tty->cx >= tty->sx) {
596 tty->cx = 1;
597 if (tty->cy != tty->rlower)
598 tty->cy++;
599
600 /*
601 * On !am terminals, force the cursor position to where
602 * we think it should be after a line wrap - this means
603 * it works on sensible terminals as well.
604 */
605 if (tty->term->flags & TERM_NOAM)
606 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
607 } else
608 tty->cx++;
609 }
610 }
611
612 void
613 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
614 {
615 if ((tty->term->flags & TERM_NOAM) &&
616 tty->cy == tty->sy - 1 &&
617 tty->cx + len >= tty->sx)
618 len = tty->sx - tty->cx - 1;
619
620 tty_add(tty, buf, len);
621 if (tty->cx + width > tty->sx) {
622 tty->cx = (tty->cx + width) - tty->sx;
623 if (tty->cx <= tty->sx)
624 tty->cy++;
625 else
626 tty->cx = tty->cy = UINT_MAX;
627 } else
628 tty->cx += width;
629 }
630
631 static void
632 tty_set_italics(struct tty *tty)
633 {
634 const char *s;
635
636 if (tty_term_has(tty->term, TTYC_SITM)) {
637 s = options_get_string(global_options, "default-terminal");
638 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
639 tty_putcode(tty, TTYC_SITM);
640 return;
641 }
642 }
643 tty_putcode(tty, TTYC_SMSO);
644 }
645
646 void
647 tty_set_title(struct tty *tty, const char *title)
648 {
649 if (!tty_term_has(tty->term, TTYC_TSL) ||
650 !tty_term_has(tty->term, TTYC_FSL))
651 return;
652
653 tty_putcode(tty, TTYC_TSL);
654 tty_puts(tty, title);
655 tty_putcode(tty, TTYC_FSL);
656 }
657
658 void
659 tty_set_path(struct tty *tty, const char *title)
660 {
661 if (!tty_term_has(tty->term, TTYC_SWD) ||
662 !tty_term_has(tty->term, TTYC_FSL))
663 return;
664
665 tty_putcode(tty, TTYC_SWD);
666 tty_puts(tty, title);
667 tty_putcode(tty, TTYC_FSL);
668 }
669
670 static void
671 tty_force_cursor_colour(struct tty *tty, int c)
672 {
673 u_char r, g, b;
674 char s[13];
675
676 if (c != -1)
677 c = colour_force_rgb(c);
678 if (c == tty->ccolour)
679 return;
680 if (c == -1)
681 tty_putcode(tty, TTYC_CR);
682 else {
683 colour_split_rgb(c, &r, &g, &b);
684 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
685 tty_putcode_ptr1(tty, TTYC_CS, s);
686 }
687 tty->ccolour = c;
688 }
689
690 static int
691 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
692 {
693 enum screen_cursor_style cstyle;
694 int ccolour, changed, cmode = mode;
695
696 /* Set cursor colour if changed. */
697 if (s != NULL) {
698 ccolour = s->ccolour;
699 if (s->ccolour == -1)
700 ccolour = s->default_ccolour;
701 tty_force_cursor_colour(tty, ccolour);
702 }
703
704 /* If cursor is off, set as invisible. */
705 if (~cmode & MODE_CURSOR) {
706 if (tty->mode & MODE_CURSOR)
707 tty_putcode(tty, TTYC_CIVIS);
708 return (cmode);
709 }
710
711 /* Check if blinking or very visible flag changed or style changed. */
712 if (s == NULL)
713 cstyle = tty->cstyle;
714 else {
715 cstyle = s->cstyle;
716 if (cstyle == SCREEN_CURSOR_DEFAULT) {
717 if (~cmode & MODE_CURSOR_BLINKING_SET) {
718 if (s->default_mode & MODE_CURSOR_BLINKING)
719 cmode |= MODE_CURSOR_BLINKING;
720 else
721 cmode &= ~MODE_CURSOR_BLINKING;
722 }
723 cstyle = s->default_cstyle;
724 }
725 }
726
727 /* If nothing changed, do nothing. */
728 changed = cmode ^ tty->mode;
729 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
730 return (cmode);
731
732 /*
733 * Set cursor style. If an explicit style has been set with DECSCUSR,
734 * set it if supported, otherwise send cvvis for blinking styles.
735 *
736 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
737 * if either the blinking or very visible flags are set.
738 */
739 tty_putcode(tty, TTYC_CNORM);
740 switch (cstyle) {
741 case SCREEN_CURSOR_DEFAULT:
742 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
743 if (tty_term_has(tty->term, TTYC_SE))
744 tty_putcode(tty, TTYC_SE);
745 else
746 tty_putcode1(tty, TTYC_SS, 0);
747 }
748 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
749 tty_putcode(tty, TTYC_CVVIS);
750 break;
751 case SCREEN_CURSOR_BLOCK:
752 if (tty_term_has(tty->term, TTYC_SS)) {
753 if (cmode & MODE_CURSOR_BLINKING)
754 tty_putcode1(tty, TTYC_SS, 1);
755 else
756 tty_putcode1(tty, TTYC_SS, 2);
757 } else if (cmode & MODE_CURSOR_BLINKING)
758 tty_putcode(tty, TTYC_CVVIS);
759 break;
760 case SCREEN_CURSOR_UNDERLINE:
761 if (tty_term_has(tty->term, TTYC_SS)) {
762 if (cmode & MODE_CURSOR_BLINKING)
763 tty_putcode1(tty, TTYC_SS, 3);
764 else
765 tty_putcode1(tty, TTYC_SS, 4);
766 } else if (cmode & MODE_CURSOR_BLINKING)
767 tty_putcode(tty, TTYC_CVVIS);
768 break;
769 case SCREEN_CURSOR_BAR:
770 if (tty_term_has(tty->term, TTYC_SS)) {
771 if (cmode & MODE_CURSOR_BLINKING)
772 tty_putcode1(tty, TTYC_SS, 5);
773 else
774 tty_putcode1(tty, TTYC_SS, 6);
775 } else if (cmode & MODE_CURSOR_BLINKING)
776 tty_putcode(tty, TTYC_CVVIS);
777 break;
778 }
779 tty->cstyle = cstyle;
780 return (cmode);
781 }
782
783 void
784 tty_update_mode(struct tty *tty, int mode, struct screen *s)
785 {
786 struct tty_term *term = tty->term;
787 struct client *c = tty->client;
788 int changed;
789
790 if (tty->flags & TTY_NOCURSOR)
791 mode &= ~MODE_CURSOR;
792
793 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
794 mode |= MODE_CURSOR_BLINKING;
795 else
796 mode &= ~MODE_CURSOR_BLINKING;
797
798 changed = mode ^ tty->mode;
799 if (log_get_level() != 0 && changed != 0) {
800 log_debug("%s: current mode %s", c->name,
801 screen_mode_to_string(tty->mode));
802 log_debug("%s: setting mode %s", c->name,
803 screen_mode_to_string(mode));
804 }
805
806 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
807 /*
808 * If the mouse modes have changed, clear then all and apply
809 * again. There are differences in how terminals track the
810 * various bits.
811 */
812 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
813 if (mode & ALL_MOUSE_MODES)
814 tty_puts(tty, "\033[?1006h");
815 if (mode & MODE_MOUSE_ALL)
816 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
817 else if (mode & MODE_MOUSE_BUTTON)
818 tty_puts(tty, "\033[?1000h\033[?1002h");
819 else if (mode & MODE_MOUSE_STANDARD)
820 tty_puts(tty, "\033[?1000h");
821 }
822 if (changed & MODE_BRACKETPASTE) {
823 if (mode & MODE_BRACKETPASTE)
824 tty_putcode(tty, TTYC_ENBP);
825 else
826 tty_putcode(tty, TTYC_DSBP);
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(struct client *c)
1609 {
1610 if (c->session == NULL || c->tty.term == NULL)
1611 return (0);
1612 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1613 return (0);
1614 if (c->tty.flags & TTY_FREEZE)
1615 return (0);
1616 return (1);
1617 }
1618
1619 void
1620 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1621 struct tty_ctx *ctx)
1622 {
1623 struct client *c;
1624 int state;
1625
1626 if (ctx->set_client_cb == NULL)
1627 return;
1628 TAILQ_FOREACH(c, &clients, entry) {
1629 if (ctx->allow_invisible_panes) {
1630 if (c->session == NULL ||
1631 c->tty.term == NULL ||
1632 c->flags & CLIENT_SUSPENDED)
1633 continue;
1634 } else {
1635 if (!tty_client_ready(c))
1636 continue;
1637 state = ctx->set_client_cb(ctx, c);
1638 if (state == -1)
1639 break;
1640 if (state == 0)
1641 continue;
1642 }
1643 cmdfn(&c->tty, ctx);
1644 }
1645 }
1646
1647 void
1648 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1649 {
1650 struct client *c = tty->client;
1651
1652 if (ctx->bigger ||
1653 !tty_full_width(tty, ctx) ||
1654 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1655 (!tty_term_has(tty->term, TTYC_ICH) &&
1656 !tty_term_has(tty->term, TTYC_ICH1)) ||
1657 c->overlay_check != NULL) {
1658 tty_draw_pane(tty, ctx, ctx->ocy);
1659 return;
1660 }
1661
1662 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1663 ctx->s->hyperlinks);
1664
1665 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1666
1667 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1668 }
1669
1670 void
1671 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1672 {
1673 struct client *c = tty->client;
1674
1675 if (ctx->bigger ||
1676 !tty_full_width(tty, ctx) ||
1677 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1678 (!tty_term_has(tty->term, TTYC_DCH) &&
1679 !tty_term_has(tty->term, TTYC_DCH1)) ||
1680 c->overlay_check != NULL) {
1681 tty_draw_pane(tty, ctx, ctx->ocy);
1682 return;
1683 }
1684
1685 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1686 ctx->s->hyperlinks);
1687
1688 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1689
1690 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1691 }
1692
1693 void
1694 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1695 {
1696 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1697 ctx->s->hyperlinks);
1698
1699 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1700 }
1701
1702 void
1703 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1704 {
1705 struct client *c = tty->client;
1706
1707 if (ctx->bigger ||
1708 !tty_full_width(tty, ctx) ||
1709 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1710 !tty_term_has(tty->term, TTYC_CSR) ||
1711 !tty_term_has(tty->term, TTYC_IL1) ||
1712 ctx->sx == 1 ||
1713 ctx->sy == 1 ||
1714 c->overlay_check != NULL) {
1715 tty_redraw_region(tty, ctx);
1716 return;
1717 }
1718
1719 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1720 ctx->s->hyperlinks);
1721
1722 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1723 tty_margin_off(tty);
1724 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1725
1726 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1727 tty->cx = tty->cy = UINT_MAX;
1728 }
1729
1730 void
1731 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1732 {
1733 struct client *c = tty->client;
1734
1735 if (ctx->bigger ||
1736 !tty_full_width(tty, ctx) ||
1737 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1738 !tty_term_has(tty->term, TTYC_CSR) ||
1739 !tty_term_has(tty->term, TTYC_DL1) ||
1740 ctx->sx == 1 ||
1741 ctx->sy == 1 ||
1742 c->overlay_check != NULL) {
1743 tty_redraw_region(tty, ctx);
1744 return;
1745 }
1746
1747 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1748 ctx->s->hyperlinks);
1749
1750 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1751 tty_margin_off(tty);
1752 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1753
1754 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1755 tty->cx = tty->cy = UINT_MAX;
1756 }
1757
1758 void
1759 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1760 {
1761 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1762 ctx->s->hyperlinks);
1763
1764 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1765 }
1766
1767 void
1768 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1769 {
1770 u_int nx = ctx->sx - ctx->ocx;
1771
1772 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1773 ctx->s->hyperlinks);
1774
1775 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1776 }
1777
1778 void
1779 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1780 {
1781 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1782 ctx->s->hyperlinks);
1783
1784 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1785 }
1786
1787 void
1788 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1789 {
1790 struct client *c = tty->client;
1791
1792 if (ctx->ocy != ctx->orupper)
1793 return;
1794
1795 if (ctx->bigger ||
1796 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1797 tty_fake_bce(tty, &ctx->defaults, 8) ||
1798 !tty_term_has(tty->term, TTYC_CSR) ||
1799 (!tty_term_has(tty->term, TTYC_RI) &&
1800 !tty_term_has(tty->term, TTYC_RIN)) ||
1801 ctx->sx == 1 ||
1802 ctx->sy == 1 ||
1803 c->overlay_check != NULL) {
1804 tty_redraw_region(tty, ctx);
1805 return;
1806 }
1807
1808 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1809 ctx->s->hyperlinks);
1810
1811 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1812 tty_margin_pane(tty, ctx);
1813 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1814
1815 if (tty_term_has(tty->term, TTYC_RI))
1816 tty_putcode(tty, TTYC_RI);
1817 else
1818 tty_putcode1(tty, TTYC_RIN, 1);
1819 }
1820
1821 void
1822 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1823 {
1824 struct client *c = tty->client;
1825
1826 if (ctx->ocy != ctx->orlower)
1827 return;
1828
1829 if (ctx->bigger ||
1830 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1831 tty_fake_bce(tty, &ctx->defaults, 8) ||
1832 !tty_term_has(tty->term, TTYC_CSR) ||
1833 ctx->sx == 1 ||
1834 ctx->sy == 1 ||
1835 c->overlay_check != NULL) {
1836 tty_redraw_region(tty, ctx);
1837 return;
1838 }
1839
1840 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1841 ctx->s->hyperlinks);
1842
1843 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1844 tty_margin_pane(tty, ctx);
1845
1846 /*
1847 * If we want to wrap a pane while using margins, the cursor needs to
1848 * be exactly on the right of the region. If the cursor is entirely off
1849 * the edge - move it back to the right. Some terminals are funny about
1850 * this and insert extra spaces, so only use the right if margins are
1851 * enabled.
1852 */
1853 if (ctx->xoff + ctx->ocx > tty->rright) {
1854 if (!tty_use_margin(tty))
1855 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1856 else
1857 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1858 } else
1859 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1860
1861 tty_putc(tty, '\n');
1862 }
1863
1864 void
1865 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1866 {
1867 struct client *c = tty->client;
1868 u_int i;
1869
1870 if (ctx->bigger ||
1871 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1872 tty_fake_bce(tty, &ctx->defaults, 8) ||
1873 !tty_term_has(tty->term, TTYC_CSR) ||
1874 ctx->sx == 1 ||
1875 ctx->sy == 1 ||
1876 c->overlay_check != NULL) {
1877 tty_redraw_region(tty, ctx);
1878 return;
1879 }
1880
1881 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1882 ctx->s->hyperlinks);
1883
1884 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1885 tty_margin_pane(tty, ctx);
1886
1887 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1888 if (!tty_use_margin(tty))
1889 tty_cursor(tty, 0, tty->rlower);
1890 else
1891 tty_cursor(tty, tty->rright, tty->rlower);
1892 for (i = 0; i < ctx->num; i++)
1893 tty_putc(tty, '\n');
1894 } else {
1895 if (tty->cy == UINT_MAX)
1896 tty_cursor(tty, 0, 0);
1897 else
1898 tty_cursor(tty, 0, tty->cy);
1899 tty_putcode1(tty, TTYC_INDN, ctx->num);
1900 }
1901 }
1902
1903 void
1904 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1905 {
1906 u_int i;
1907 struct client *c = tty->client;
1908
1909 if (ctx->bigger ||
1910 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1911 tty_fake_bce(tty, &ctx->defaults, 8) ||
1912 !tty_term_has(tty->term, TTYC_CSR) ||
1913 (!tty_term_has(tty->term, TTYC_RI) &&
1914 !tty_term_has(tty->term, TTYC_RIN)) ||
1915 ctx->sx == 1 ||
1916 ctx->sy == 1 ||
1917 c->overlay_check != NULL) {
1918 tty_redraw_region(tty, ctx);
1919 return;
1920 }
1921
1922 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1923 ctx->s->hyperlinks);
1924
1925 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1926 tty_margin_pane(tty, ctx);
1927 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1928
1929 if (tty_term_has(tty->term, TTYC_RIN))
1930 tty_putcode1(tty, TTYC_RIN, ctx->num);
1931 else {
1932 for (i = 0; i < ctx->num; i++)
1933 tty_putcode(tty, TTYC_RI);
1934 }
1935 }
1936
1937 void
1938 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1939 {
1940 u_int px, py, nx, ny;
1941
1942 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1943 ctx->s->hyperlinks);
1944
1945 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1946 tty_margin_off(tty);
1947
1948 px = 0;
1949 nx = ctx->sx;
1950 py = ctx->ocy + 1;
1951 ny = ctx->sy - ctx->ocy - 1;
1952
1953 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1954
1955 px = ctx->ocx;
1956 nx = ctx->sx - ctx->ocx;
1957 py = ctx->ocy;
1958
1959 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1960 }
1961
1962 void
1963 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1964 {
1965 u_int px, py, nx, ny;
1966
1967 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1968 ctx->s->hyperlinks);
1969
1970 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1971 tty_margin_off(tty);
1972
1973 px = 0;
1974 nx = ctx->sx;
1975 py = 0;
1976 ny = ctx->ocy;
1977
1978 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1979
1980 px = 0;
1981 nx = ctx->ocx + 1;
1982 py = ctx->ocy;
1983
1984 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1985 }
1986
1987 void
1988 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1989 {
1990 u_int px, py, nx, ny;
1991
1992 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1993 ctx->s->hyperlinks);
1994
1995 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1996 tty_margin_off(tty);
1997
1998 px = 0;
1999 nx = ctx->sx;
2000 py = 0;
2001 ny = ctx->sy;
2002
2003 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2004 }
2005
2006 void
2007 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2008 {
2009 u_int i, j;
2010
2011 if (ctx->bigger) {
2012 ctx->redraw_cb(ctx);
2013 return;
2014 }
2015
2016 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2017 ctx->s->hyperlinks);
2018
2019 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2020 tty_margin_off(tty);
2021
2022 for (j = 0; j < ctx->sy; j++) {
2023 tty_cursor_pane(tty, ctx, 0, j);
2024 for (i = 0; i < ctx->sx; i++)
2025 tty_putc(tty, 'E');
2026 }
2027 }
2028
2029 void
2030 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2031 {
2032 const struct grid_cell *gcp = ctx->cell;
2033 struct screen *s = ctx->s;
2034 struct overlay_ranges r;
2035 u_int px, py, i, vis = 0;
2036
2037 px = ctx->xoff + ctx->ocx - ctx->wox;
2038 py = ctx->yoff + ctx->ocy - ctx->woy;
2039 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2040 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2041 return;
2042
2043 /* Handle partially obstructed wide characters. */
2044 if (gcp->data.width > 1) {
2045 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2046 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2047 vis += r.nx[i];
2048 if (vis < gcp->data.width) {
2049 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2050 px, py, &ctx->defaults, ctx->palette);
2051 return;
2052 }
2053 }
2054
2055 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2056 ctx->ocy == ctx->orlower &&
2057 tty_full_width(tty, ctx))
2058 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2059
2060 tty_margin_off(tty);
2061 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2062
2063 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2064 ctx->s->hyperlinks);
2065 }
2066
2067 void
2068 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2069 {
2070 struct overlay_ranges r;
2071 u_int i, px, py, cx;
2072 char *cp = ctx->ptr;
2073
2074 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2075 return;
2076
2077 if (ctx->bigger &&
2078 (ctx->xoff + ctx->ocx < ctx->wox ||
2079 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2080 if (!ctx->wrapped ||
2081 !tty_full_width(tty, ctx) ||
2082 (tty->term->flags & TERM_NOAM) ||
2083 ctx->xoff + ctx->ocx != 0 ||
2084 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2085 tty->cx < tty->sx ||
2086 tty->cy == tty->rlower)
2087 tty_draw_pane(tty, ctx, ctx->ocy);
2088 else
2089 ctx->redraw_cb(ctx);
2090 return;
2091 }
2092
2093 tty_margin_off(tty);
2094 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2095 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2096
2097 /* Get tty position from pane position for overlay check. */
2098 px = ctx->xoff + ctx->ocx - ctx->wox;
2099 py = ctx->yoff + ctx->ocy - ctx->woy;
2100
2101 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2102 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2103 if (r.nx[i] == 0)
2104 continue;
2105 /* Convert back to pane position for printing. */
2106 cx = r.px[i] - ctx->xoff + ctx->wox;
2107 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2108 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2109 }
2110 }
2111
2112 void
2113 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2114 {
2115 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2116 }
2117
2118 void
2119 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2120 size_t len)
2121 {
2122 char *encoded;
2123 size_t size;
2124
2125 if (~tty->flags & TTY_STARTED)
2126 return;
2127 if (!tty_term_has(tty->term, TTYC_MS))
2128 return;
2129
2130 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2131 encoded = xmalloc(size);
2132
2133 b64_ntop(buf, len, encoded, size);
2134 tty->flags |= TTY_NOBLOCK;
2135 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded);
2136
2137 free(encoded);
2138 }
2139
2140 void
2141 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2142 {
2143 tty->flags |= TTY_NOBLOCK;
2144 tty_add(tty, ctx->ptr, ctx->num);
2145 tty_invalidate(tty);
2146 }
2147
2148 void
2149 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2150 {
2151 if (ctx->num == 0x11) {
2152 /*
2153 * This is an overlay and a command that moves the cursor so
2154 * start synchronized updates.
2155 */
2156 tty_sync_start(tty);
2157 } else if (~ctx->num & 0x10) {
2158 /*
2159 * This is a pane. If there is an overlay, always start;
2160 * otherwise, only if requested.
2161 */
2162 if (ctx->num || tty->client->overlay_draw != NULL)
2163 tty_sync_start(tty);
2164 }
2165 }
2166
2167 void
2168 tty_cell(struct tty *tty, const struct grid_cell *gc,
2169 const struct grid_cell *defaults, struct colour_palette *palette,
2170 struct hyperlinks *hl)
2171 {
2172 const struct grid_cell *gcp;
2173
2174 /* Skip last character if terminal is stupid. */
2175 if ((tty->term->flags & TERM_NOAM) &&
2176 tty->cy == tty->sy - 1 &&
2177 tty->cx == tty->sx - 1)
2178 return;
2179
2180 /* If this is a padding character, do nothing. */
2181 if (gc->flags & GRID_FLAG_PADDING)
2182 return;
2183
2184 /* Check the output codeset and apply attributes. */
2185 gcp = tty_check_codeset(tty, gc);
2186 tty_attributes(tty, gcp, defaults, palette, hl);
2187
2188 /* If it is a single character, write with putc to handle ACS. */
2189 if (gcp->data.size == 1) {
2190 tty_attributes(tty, gcp, defaults, palette, hl);
2191 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2192 return;
2193 tty_putc(tty, *gcp->data.data);
2194 return;
2195 }
2196
2197 /* Write the data. */
2198 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2199 }
2200
2201 void
2202 tty_reset(struct tty *tty)
2203 {
2204 struct grid_cell *gc = &tty->cell;
2205
2206 if (!grid_cells_equal(gc, &grid_default_cell)) {
2207 if (gc->link != 0)
2208 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2209 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2210 tty_putcode(tty, TTYC_RMACS);
2211 tty_putcode(tty, TTYC_SGR0);
2212 memcpy(gc, &grid_default_cell, sizeof *gc);
2213 }
2214 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2215 }
2216
2217 static void
2218 tty_invalidate(struct tty *tty)
2219 {
2220 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2221 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2222
2223 tty->cx = tty->cy = UINT_MAX;
2224 tty->rupper = tty->rleft = UINT_MAX;
2225 tty->rlower = tty->rright = UINT_MAX;
2226
2227 if (tty->flags & TTY_STARTED) {
2228 if (tty_use_margin(tty))
2229 tty_putcode(tty, TTYC_ENMG);
2230 tty_putcode(tty, TTYC_SGR0);
2231
2232 tty->mode = ALL_MODES;
2233 tty_update_mode(tty, MODE_CURSOR, NULL);
2234
2235 tty_cursor(tty, 0, 0);
2236 tty_region_off(tty);
2237 tty_margin_off(tty);
2238 } else
2239 tty->mode = MODE_CURSOR;
2240 }
2241
2242 /* Turn off margin. */
2243 void
2244 tty_region_off(struct tty *tty)
2245 {
2246 tty_region(tty, 0, tty->sy - 1);
2247 }
2248
2249 /* Set region inside pane. */
2250 static void
2251 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2252 u_int rlower)
2253 {
2254 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2255 ctx->yoff + rlower - ctx->woy);
2256 }
2257
2258 /* Set region at absolute position. */
2259 static void
2260 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2261 {
2262 if (tty->rlower == rlower && tty->rupper == rupper)
2263 return;
2264 if (!tty_term_has(tty->term, TTYC_CSR))
2265 return;
2266
2267 tty->rupper = rupper;
2268 tty->rlower = rlower;
2269
2270 /*
2271 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2272 * 0,0 if it is beyond the last column (they do not reset their wrap
2273 * flag so further output causes a line feed). As a workaround, do an
2274 * explicit move to 0 first.
2275 */
2276 if (tty->cx >= tty->sx) {
2277 if (tty->cy == UINT_MAX)
2278 tty_cursor(tty, 0, 0);
2279 else
2280 tty_cursor(tty, 0, tty->cy);
2281 }
2282
2283 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2284 tty->cx = tty->cy = UINT_MAX;
2285 }
2286
2287 /* Turn off margin. */
2288 void
2289 tty_margin_off(struct tty *tty)
2290 {
2291 tty_margin(tty, 0, tty->sx - 1);
2292 }
2293
2294 /* Set margin inside pane. */
2295 static void
2296 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2297 {
2298 tty_margin(tty, ctx->xoff - ctx->wox,
2299 ctx->xoff + ctx->sx - 1 - ctx->wox);
2300 }
2301
2302 /* Set margin at absolute position. */
2303 static void
2304 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2305 {
2306 if (!tty_use_margin(tty))
2307 return;
2308 if (tty->rleft == rleft && tty->rright == rright)
2309 return;
2310
2311 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2312
2313 tty->rleft = rleft;
2314 tty->rright = rright;
2315
2316 if (rleft == 0 && rright == tty->sx - 1)
2317 tty_putcode(tty, TTYC_CLMG);
2318 else
2319 tty_putcode2(tty, TTYC_CMG, rleft, rright);
2320 tty->cx = tty->cy = UINT_MAX;
2321 }
2322
2323 /*
2324 * Move the cursor, unless it would wrap itself when the next character is
2325 * printed.
2326 */
2327 static void
2328 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2329 u_int cx, u_int cy)
2330 {
2331 if (!ctx->wrapped ||
2332 !tty_full_width(tty, ctx) ||
2333 (tty->term->flags & TERM_NOAM) ||
2334 ctx->xoff + cx != 0 ||
2335 ctx->yoff + cy != tty->cy + 1 ||
2336 tty->cx < tty->sx ||
2337 tty->cy == tty->rlower)
2338 tty_cursor_pane(tty, ctx, cx, cy);
2339 else
2340 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2341 }
2342
2343 /* Move cursor inside pane. */
2344 static void
2345 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2346 {
2347 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2348 }
2349
2350 /* Move cursor to absolute position. */
2351 void
2352 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2353 {
2354 struct tty_term *term = tty->term;
2355 u_int thisx, thisy;
2356 int change;
2357
2358 if (tty->flags & TTY_BLOCK)
2359 return;
2360
2361 thisx = tty->cx;
2362 thisy = tty->cy;
2363
2364 /*
2365 * If in the automargin space, and want to be there, do not move.
2366 * Otherwise, force the cursor to be in range (and complain).
2367 */
2368 if (cx == thisx && cy == thisy && cx == tty->sx)
2369 return;
2370 if (cx > tty->sx - 1) {
2371 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2372 cx = tty->sx - 1;
2373 }
2374
2375 /* No change. */
2376 if (cx == thisx && cy == thisy)
2377 return;
2378
2379 /* Currently at the very end of the line - use absolute movement. */
2380 if (thisx > tty->sx - 1)
2381 goto absolute;
2382
2383 /* Move to home position (0, 0). */
2384 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2385 tty_putcode(tty, TTYC_HOME);
2386 goto out;
2387 }
2388
2389 /* Zero on the next line. */
2390 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2391 (!tty_use_margin(tty) || tty->rleft == 0)) {
2392 tty_putc(tty, '\r');
2393 tty_putc(tty, '\n');
2394 goto out;
2395 }
2396
2397 /* Moving column or row. */
2398 if (cy == thisy) {
2399 /*
2400 * Moving column only, row staying the same.
2401 */
2402
2403 /* To left edge. */
2404 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2405 tty_putc(tty, '\r');
2406 goto out;
2407 }
2408
2409 /* One to the left. */
2410 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2411 tty_putcode(tty, TTYC_CUB1);
2412 goto out;
2413 }
2414
2415 /* One to the right. */
2416 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2417 tty_putcode(tty, TTYC_CUF1);
2418 goto out;
2419 }
2420
2421 /* Calculate difference. */
2422 change = thisx - cx; /* +ve left, -ve right */
2423
2424 /*
2425 * Use HPA if change is larger than absolute, otherwise move
2426 * the cursor with CUB/CUF.
2427 */
2428 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2429 tty_putcode1(tty, TTYC_HPA, cx);
2430 goto out;
2431 } else if (change > 0 &&
2432 tty_term_has(term, TTYC_CUB) &&
2433 !tty_use_margin(tty)) {
2434 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2435 tty_putcode(tty, TTYC_CUB1);
2436 tty_putcode(tty, TTYC_CUB1);
2437 goto out;
2438 }
2439 tty_putcode1(tty, TTYC_CUB, change);
2440 goto out;
2441 } else if (change < 0 &&
2442 tty_term_has(term, TTYC_CUF) &&
2443 !tty_use_margin(tty)) {
2444 tty_putcode1(tty, TTYC_CUF, -change);
2445 goto out;
2446 }
2447 } else if (cx == thisx) {
2448 /*
2449 * Moving row only, column staying the same.
2450 */
2451
2452 /* One above. */
2453 if (thisy != tty->rupper &&
2454 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2455 tty_putcode(tty, TTYC_CUU1);
2456 goto out;
2457 }
2458
2459 /* One below. */
2460 if (thisy != tty->rlower &&
2461 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2462 tty_putcode(tty, TTYC_CUD1);
2463 goto out;
2464 }
2465
2466 /* Calculate difference. */
2467 change = thisy - cy; /* +ve up, -ve down */
2468
2469 /*
2470 * Try to use VPA if change is larger than absolute or if this
2471 * change would cross the scroll region, otherwise use CUU/CUD.
2472 */
2473 if ((u_int) abs(change) > cy ||
2474 (change < 0 && cy - change > tty->rlower) ||
2475 (change > 0 && cy - change < tty->rupper)) {
2476 if (tty_term_has(term, TTYC_VPA)) {
2477 tty_putcode1(tty, TTYC_VPA, cy);
2478 goto out;
2479 }
2480 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2481 tty_putcode1(tty, TTYC_CUU, change);
2482 goto out;
2483 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2484 tty_putcode1(tty, TTYC_CUD, -change);
2485 goto out;
2486 }
2487 }
2488
2489 absolute:
2490 /* Absolute movement. */
2491 tty_putcode2(tty, TTYC_CUP, cy, cx);
2492
2493 out:
2494 tty->cx = cx;
2495 tty->cy = cy;
2496 }
2497
2498 static void
2499 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2500 struct hyperlinks *hl)
2501 {
2502 const char *uri, *id;
2503
2504 if (gc->link == tty->cell.link)
2505 return;
2506 tty->cell.link = gc->link;
2507
2508 if (hl == NULL)
2509 return;
2510
2511 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2512 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2513 else
2514 tty_putcode_ptr2(tty, TTYC_HLS, id, uri);
2515 }
2516
2517 void
2518 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2519 const struct grid_cell *defaults, struct colour_palette *palette,
2520 struct hyperlinks *hl)
2521 {
2522 struct grid_cell *tc = &tty->cell, gc2;
2523 int changed;
2524
2525 /* Copy cell and update default colours. */
2526 memcpy(&gc2, gc, sizeof gc2);
2527 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2528 if (gc2.fg == 8)
2529 gc2.fg = defaults->fg;
2530 if (gc2.bg == 8)
2531 gc2.bg = defaults->bg;
2532 }
2533
2534 /* Ignore cell if it is the same as the last one. */
2535 if (gc2.attr == tty->last_cell.attr &&
2536 gc2.fg == tty->last_cell.fg &&
2537 gc2.bg == tty->last_cell.bg &&
2538 gc2.us == tty->last_cell.us &&
2539 gc2.link == tty->last_cell.link)
2540 return;
2541
2542 /*
2543 * If no setab, try to use the reverse attribute as a best-effort for a
2544 * non-default background. This is a bit of a hack but it doesn't do
2545 * any serious harm and makes a couple of applications happier.
2546 */
2547 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2548 if (gc2.attr & GRID_ATTR_REVERSE) {
2549 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2550 gc2.attr &= ~GRID_ATTR_REVERSE;
2551 } else {
2552 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2553 gc2.attr |= GRID_ATTR_REVERSE;
2554 }
2555 }
2556
2557 /* Fix up the colours if necessary. */
2558 tty_check_fg(tty, palette, &gc2);
2559 tty_check_bg(tty, palette, &gc2);
2560 tty_check_us(tty, palette, &gc2);
2561
2562 /*
2563 * If any bits are being cleared or the underline colour is now default,
2564 * reset everything.
2565 */
2566 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2567 tty_reset(tty);
2568
2569 /*
2570 * Set the colours. This may call tty_reset() (so it comes next) and
2571 * may add to (NOT remove) the desired attributes.
2572 */
2573 tty_colours(tty, &gc2);
2574
2575 /* Filter out attribute bits already set. */
2576 changed = gc2.attr & ~tc->attr;
2577 tc->attr = gc2.attr;
2578
2579 /* Set the attributes. */
2580 if (changed & GRID_ATTR_BRIGHT)
2581 tty_putcode(tty, TTYC_BOLD);
2582 if (changed & GRID_ATTR_DIM)
2583 tty_putcode(tty, TTYC_DIM);
2584 if (changed & GRID_ATTR_ITALICS)
2585 tty_set_italics(tty);
2586 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2587 if ((changed & GRID_ATTR_UNDERSCORE) ||
2588 !tty_term_has(tty->term, TTYC_SMULX))
2589 tty_putcode(tty, TTYC_SMUL);
2590 else if (changed & GRID_ATTR_UNDERSCORE_2)
2591 tty_putcode1(tty, TTYC_SMULX, 2);
2592 else if (changed & GRID_ATTR_UNDERSCORE_3)
2593 tty_putcode1(tty, TTYC_SMULX, 3);
2594 else if (changed & GRID_ATTR_UNDERSCORE_4)
2595 tty_putcode1(tty, TTYC_SMULX, 4);
2596 else if (changed & GRID_ATTR_UNDERSCORE_5)
2597 tty_putcode1(tty, TTYC_SMULX, 5);
2598 }
2599 if (changed & GRID_ATTR_BLINK)
2600 tty_putcode(tty, TTYC_BLINK);
2601 if (changed & GRID_ATTR_REVERSE) {
2602 if (tty_term_has(tty->term, TTYC_REV))
2603 tty_putcode(tty, TTYC_REV);
2604 else if (tty_term_has(tty->term, TTYC_SMSO))
2605 tty_putcode(tty, TTYC_SMSO);
2606 }
2607 if (changed & GRID_ATTR_HIDDEN)
2608 tty_putcode(tty, TTYC_INVIS);
2609 if (changed & GRID_ATTR_STRIKETHROUGH)
2610 tty_putcode(tty, TTYC_SMXX);
2611 if (changed & GRID_ATTR_OVERLINE)
2612 tty_putcode(tty, TTYC_SMOL);
2613 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2614 tty_putcode(tty, TTYC_SMACS);
2615
2616 /* Set hyperlink if any. */
2617 tty_hyperlink(tty, gc, hl);
2618
2619 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2620 }
2621
2622 static void
2623 tty_colours(struct tty *tty, const struct grid_cell *gc)
2624 {
2625 struct grid_cell *tc = &tty->cell;
2626 int have_ax;
2627
2628 /* No changes? Nothing is necessary. */
2629 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2630 return;
2631
2632 /*
2633 * Is either the default colour? This is handled specially because the
2634 * best solution might be to reset both colours to default, in which
2635 * case if only one is default need to fall onward to set the other
2636 * colour.
2637 */
2638 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2639 /*
2640 * If don't have AX but do have op, send sgr0 (op can't
2641 * actually be used because it is sometimes the same as sgr0
2642 * and sometimes isn't). This resets both colours to default.
2643 *
2644 * Otherwise, try to set the default colour only as needed.
2645 */
2646 have_ax = tty_term_flag(tty->term, TTYC_AX);
2647 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2648 tty_reset(tty);
2649 else {
2650 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2651 if (have_ax)
2652 tty_puts(tty, "\033[39m");
2653 else if (tc->fg != 7)
2654 tty_putcode1(tty, TTYC_SETAF, 7);
2655 tc->fg = gc->fg;
2656 }
2657 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2658 if (have_ax)
2659 tty_puts(tty, "\033[49m");
2660 else if (tc->bg != 0)
2661 tty_putcode1(tty, TTYC_SETAB, 0);
2662 tc->bg = gc->bg;
2663 }
2664 }
2665 }
2666
2667 /* Set the foreground colour. */
2668 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2669 tty_colours_fg(tty, gc);
2670
2671 /*
2672 * Set the background colour. This must come after the foreground as
2673 * tty_colour_fg() can call tty_reset().
2674 */
2675 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2676 tty_colours_bg(tty, gc);
2677
2678 /* Set the underscore colour. */
2679 if (gc->us != tc->us)
2680 tty_colours_us(tty, gc);
2681 }
2682
2683 static void
2684 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2685 struct grid_cell *gc)
2686 {
2687 u_char r, g, b;
2688 u_int colours;
2689 int c;
2690
2691 /*
2692 * Perform substitution if this pane has a palette. If the bright
2693 * attribute is set and Nobr is not present, use the bright entry in
2694 * the palette by changing to the aixterm colour
2695 */
2696 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2697 c = gc->fg;
2698 if (c < 8 &&
2699 gc->attr & GRID_ATTR_BRIGHT &&
2700 !tty_term_has(tty->term, TTYC_NOBR))
2701 c += 90;
2702 if ((c = colour_palette_get(palette, c)) != -1)
2703 gc->fg = c;
2704 }
2705
2706 /* Is this a 24-bit colour? */
2707 if (gc->fg & COLOUR_FLAG_RGB) {
2708 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2709 if (tty->term->flags & TERM_RGBCOLOURS)
2710 return;
2711 colour_split_rgb(gc->fg, &r, &g, &b);
2712 gc->fg = colour_find_rgb(r, g, b);
2713 }
2714
2715 /* How many colours does this terminal have? */
2716 if (tty->term->flags & TERM_256COLOURS)
2717 colours = 256;
2718 else
2719 colours = tty_term_number(tty->term, TTYC_COLORS);
2720
2721 /* Is this a 256-colour colour? */
2722 if (gc->fg & COLOUR_FLAG_256) {
2723 /* And not a 256 colour mode? */
2724 if (colours < 256) {
2725 gc->fg = colour_256to16(gc->fg);
2726 if (gc->fg & 8) {
2727 gc->fg &= 7;
2728 if (colours >= 16)
2729 gc->fg += 90;
2730 }
2731 }
2732 return;
2733 }
2734
2735 /* Is this an aixterm colour? */
2736 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2737 gc->fg -= 90;
2738 gc->attr |= GRID_ATTR_BRIGHT;
2739 }
2740 }
2741
2742 static void
2743 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2744 struct grid_cell *gc)
2745 {
2746 u_char r, g, b;
2747 u_int colours;
2748 int c;
2749
2750 /* Perform substitution if this pane has a palette. */
2751 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2752 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2753 gc->bg = c;
2754 }
2755
2756 /* Is this a 24-bit colour? */
2757 if (gc->bg & COLOUR_FLAG_RGB) {
2758 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2759 if (tty->term->flags & TERM_RGBCOLOURS)
2760 return;
2761 colour_split_rgb(gc->bg, &r, &g, &b);
2762 gc->bg = colour_find_rgb(r, g, b);
2763 }
2764
2765 /* How many colours does this terminal have? */
2766 if (tty->term->flags & TERM_256COLOURS)
2767 colours = 256;
2768 else
2769 colours = tty_term_number(tty->term, TTYC_COLORS);
2770
2771 /* Is this a 256-colour colour? */
2772 if (gc->bg & COLOUR_FLAG_256) {
2773 /*
2774 * And not a 256 colour mode? Translate to 16-colour
2775 * palette. Bold background doesn't exist portably, so just
2776 * discard the bold bit if set.
2777 */
2778 if (colours < 256) {
2779 gc->bg = colour_256to16(gc->bg);
2780 if (gc->bg & 8) {
2781 gc->bg &= 7;
2782 if (colours >= 16)
2783 gc->bg += 90;
2784 }
2785 }
2786 return;
2787 }
2788
2789 /* Is this an aixterm colour? */
2790 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2791 gc->bg -= 90;
2792 }
2793
2794 static void
2795 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2796 struct grid_cell *gc)
2797 {
2798 int c;
2799
2800 /* Perform substitution if this pane has a palette. */
2801 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2802 if ((c = colour_palette_get(palette, gc->us)) != -1)
2803 gc->us = c;
2804 }
2805
2806 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2807 if (gc->us & COLOUR_FLAG_256)
2808 gc->us = colour_256toRGB (gc->us);
2809 }
2810
2811 static void
2812 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2813 {
2814 struct grid_cell *tc = &tty->cell;
2815 char s[32];
2816
2817 /* Is this a 24-bit or 256-colour colour? */
2818 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2819 if (tty_try_colour(tty, gc->fg, "38") == 0)
2820 goto save;
2821 /* Should not get here, already converted in tty_check_fg. */
2822 return;
2823 }
2824
2825 /* Is this an aixterm bright colour? */
2826 if (gc->fg >= 90 && gc->fg <= 97) {
2827 if (tty->term->flags & TERM_256COLOURS) {
2828 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2829 tty_puts(tty, s);
2830 } else
2831 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2832 goto save;
2833 }
2834
2835 /* Otherwise set the foreground colour. */
2836 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2837
2838 save:
2839 /* Save the new values in the terminal current cell. */
2840 tc->fg = gc->fg;
2841 }
2842
2843 static void
2844 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2845 {
2846 struct grid_cell *tc = &tty->cell;
2847 char s[32];
2848
2849 /* Is this a 24-bit or 256-colour colour? */
2850 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2851 if (tty_try_colour(tty, gc->bg, "48") == 0)
2852 goto save;
2853 /* Should not get here, already converted in tty_check_bg. */
2854 return;
2855 }
2856
2857 /* Is this an aixterm bright colour? */
2858 if (gc->bg >= 90 && gc->bg <= 97) {
2859 if (tty->term->flags & TERM_256COLOURS) {
2860 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2861 tty_puts(tty, s);
2862 } else
2863 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2864 goto save;
2865 }
2866
2867 /* Otherwise set the background colour. */
2868 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2869
2870 save:
2871 /* Save the new values in the terminal current cell. */
2872 tc->bg = gc->bg;
2873 }
2874
2875 static void
2876 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2877 {
2878 struct grid_cell *tc = &tty->cell;
2879 u_int c;
2880 u_char r, g, b;
2881
2882 /* Clear underline colour. */
2883 if (gc->us == 0) {
2884 tty_putcode(tty, TTYC_OL);
2885 goto save;
2886 }
2887
2888 /* Must be an RGB colour - this should never happen. */
2889 if (~gc->us & COLOUR_FLAG_RGB)
2890 return;
2891
2892 /*
2893 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2894 * capability format. Calculate the colour value.
2895 */
2896 colour_split_rgb(gc->us, &r, &g, &b);
2897 c = (65536 * r) + (256 * g) + b;
2898
2899 /*
2900 * Write the colour. Only use setal if the RGB flag is set because the
2901 * non-RGB version may be wrong.
2902 */
2903 if (tty_term_has(tty->term, TTYC_SETULC))
2904 tty_putcode1(tty, TTYC_SETULC, c);
2905 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2906 tty_term_has(tty->term, TTYC_RGB))
2907 tty_putcode1(tty, TTYC_SETAL, c);
2908
2909 save:
2910 /* Save the new values in the terminal current cell. */
2911 tc->us = gc->us;
2912 }
2913
2914 static int
2915 tty_try_colour(struct tty *tty, int colour, const char *type)
2916 {
2917 u_char r, g, b;
2918
2919 if (colour & COLOUR_FLAG_256) {
2920 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2921 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2922 else if (tty_term_has(tty->term, TTYC_SETAB))
2923 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2924 return (0);
2925 }
2926
2927 if (colour & COLOUR_FLAG_RGB) {
2928 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2929 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2930 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2931 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2932 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2933 return (0);
2934 }
2935
2936 return (-1);
2937 }
2938
2939 static void
2940 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2941 {
2942 memcpy(gc, &grid_default_cell, sizeof *gc);
2943 gc->fg = wp->palette.fg;
2944 gc->bg = wp->palette.bg;
2945 }
2946
2947 void
2948 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2949 {
2950 struct options *oo = wp->options;
2951 struct format_tree *ft;
2952
2953 memcpy(gc, &grid_default_cell, sizeof *gc);
2954
2955 if (wp->flags & PANE_STYLECHANGED) {
2956 log_debug("%%%u: style changed", wp->id);
2957 wp->flags &= ~PANE_STYLECHANGED;
2958
2959 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
2960 FORMAT_NOJOBS);
2961 format_defaults(ft, NULL, NULL, NULL, wp);
2962 tty_window_default_style(&wp->cached_active_gc, wp);
2963 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
2964 tty_window_default_style(&wp->cached_gc, wp);
2965 style_add(&wp->cached_gc, oo, "window-style", ft);
2966 format_free(ft);
2967 }
2968
2969 if (gc->fg == 8) {
2970 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
2971 gc->fg = wp->cached_active_gc.fg;
2972 else
2973 gc->fg = wp->cached_gc.fg;
2974 }
2975
2976 if (gc->bg == 8) {
2977 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
2978 gc->bg = wp->cached_active_gc.bg;
2979 else
2980 gc->bg = wp->cached_gc.bg;
2981 }
2982 }
2983
2984 static void
2985 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
2986 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
2987 {
2988 struct grid_cell gc;
2989
2990 memcpy(&gc, &grid_default_cell, sizeof gc);
2991 gc.bg = bg;
2992 tty_attributes(tty, &gc, defaults, palette, hl);
2993 }
2994
2995 static void
2996 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
2997 {
2998 struct tty *tty = data;
2999 struct client *c = tty->client;
3000
3001 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3002 free(c->clipboard_panes);
3003 c->clipboard_panes = NULL;
3004 c->clipboard_npanes = 0;
3005
3006 tty->flags &= ~TTY_OSC52QUERY;
3007 }
3008
3009 void
3010 tty_clipboard_query(struct tty *tty)
3011 {
3012 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3013
3014 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3015 return;
3016 tty_putcode_ptr2(tty, TTYC_MS, "", "?");
3017
3018 tty->flags |= TTY_OSC52QUERY;
3019 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3020 evtimer_add(&tty->clipboard_timer, &tv);
3021 }