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Add an L modifier like P, W, S to loop over clients. Also fix some long
[tmux.git] / tty.c
blobc8a2a6eed6c9b7fdc670161e1b711c0c5d9454f2
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/ioctl.h>
21
22 #include <netinet/in.h>
23
24 #include <curses.h>
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <resolv.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <termios.h>
31 #include <unistd.h>
32
33 #include "tmux.h"
34
35 static int tty_log_fd = -1;
36
37 static int tty_client_ready(struct client *);
38
39 static void tty_set_italics(struct tty *);
40 static int tty_try_colour(struct tty *, int, const char *);
41 static void tty_force_cursor_colour(struct tty *, int);
42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
43 u_int);
44 static void tty_cursor_pane_unless_wrap(struct tty *,
45 const struct tty_ctx *, u_int, u_int);
46 static void tty_invalidate(struct tty *);
47 static void tty_colours(struct tty *, const struct grid_cell *);
48 static void tty_check_fg(struct tty *, struct colour_palette *,
49 struct grid_cell *);
50 static void tty_check_bg(struct tty *, struct colour_palette *,
51 struct grid_cell *);
52 static void tty_check_us(struct tty *, struct colour_palette *,
53 struct grid_cell *);
54 static void tty_colours_fg(struct tty *, const struct grid_cell *);
55 static void tty_colours_bg(struct tty *, const struct grid_cell *);
56 static void tty_colours_us(struct tty *, const struct grid_cell *);
57
58 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
59 u_int);
60 static void tty_region(struct tty *, u_int, u_int);
61 static void tty_margin_pane(struct tty *, const struct tty_ctx *);
62 static void tty_margin(struct tty *, u_int, u_int);
63 static int tty_large_region(struct tty *, const struct tty_ctx *);
64 static int tty_fake_bce(const struct tty *, const struct grid_cell *,
65 u_int);
66 static void tty_redraw_region(struct tty *, const struct tty_ctx *);
67 static void tty_emulate_repeat(struct tty *, enum tty_code_code,
68 enum tty_code_code, u_int);
69 static void tty_repeat_space(struct tty *, u_int);
70 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
71 static void tty_default_attributes(struct tty *, const struct grid_cell *,
72 struct colour_palette *, u_int, struct hyperlinks *);
73 static int tty_check_overlay(struct tty *, u_int, u_int);
74 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
75 struct overlay_ranges *);
76
77 #define tty_use_margin(tty) \
78 (tty->term->flags & TERM_DECSLRM)
79 #define tty_full_width(tty, ctx) \
80 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
81
82 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
83 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
84 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
85
86 #define TTY_QUERY_TIMEOUT 5
87
88 void
89 tty_create_log(void)
90 {
91 char name[64];
92
93 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
94
95 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
96 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
97 fatal("fcntl failed");
98 }
99
100 int
101 tty_init(struct tty *tty, struct client *c)
102 {
103 if (!isatty(c->fd))
104 return (-1);
105
106 memset(tty, 0, sizeof *tty);
107 tty->client = c;
108
109 tty->cstyle = SCREEN_CURSOR_DEFAULT;
110 tty->ccolour = -1;
111 tty->fg = tty->bg = -1;
112
113 if (tcgetattr(c->fd, &tty->tio) != 0)
114 return (-1);
115 return (0);
116 }
117
118 void
119 tty_resize(struct tty *tty)
120 {
121 struct client *c = tty->client;
122 struct winsize ws;
123 u_int sx, sy, xpixel, ypixel;
124
125 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
126 sx = ws.ws_col;
127 if (sx == 0) {
128 sx = 80;
129 xpixel = 0;
130 } else
131 xpixel = ws.ws_xpixel / sx;
132 sy = ws.ws_row;
133 if (sy == 0) {
134 sy = 24;
135 ypixel = 0;
136 } else
137 ypixel = ws.ws_ypixel / sy;
138 } else {
139 sx = 80;
140 sy = 24;
141 xpixel = 0;
142 ypixel = 0;
143 }
144 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
145 xpixel, ypixel);
146 tty_set_size(tty, sx, sy, xpixel, ypixel);
147 tty_invalidate(tty);
148 }
149
150 void
151 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
152 {
153 tty->sx = sx;
154 tty->sy = sy;
155 tty->xpixel = xpixel;
156 tty->ypixel = ypixel;
157 }
158
159 static void
160 tty_read_callback(__unused int fd, __unused short events, void *data)
161 {
162 struct tty *tty = data;
163 struct client *c = tty->client;
164 const char *name = c->name;
165 size_t size = EVBUFFER_LENGTH(tty->in);
166 int nread;
167
168 nread = evbuffer_read(tty->in, c->fd, -1);
169 if (nread == 0 || nread == -1) {
170 if (nread == 0)
171 log_debug("%s: read closed", name);
172 else
173 log_debug("%s: read error: %s", name, strerror(errno));
174 event_del(&tty->event_in);
175 server_client_lost(tty->client);
176 return;
177 }
178 log_debug("%s: read %d bytes (already %zu)", name, nread, size);
179
180 while (tty_keys_next(tty))
181 ;
182 }
183
184 static void
185 tty_timer_callback(__unused int fd, __unused short events, void *data)
186 {
187 struct tty *tty = data;
188 struct client *c = tty->client;
189 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
190
191 log_debug("%s: %zu discarded", c->name, tty->discarded);
192
193 c->flags |= CLIENT_ALLREDRAWFLAGS;
194 c->discarded += tty->discarded;
195
196 if (tty->discarded < TTY_BLOCK_STOP(tty)) {
197 tty->flags &= ~TTY_BLOCK;
198 tty_invalidate(tty);
199 return;
200 }
201 tty->discarded = 0;
202 evtimer_add(&tty->timer, &tv);
203 }
204
205 static int
206 tty_block_maybe(struct tty *tty)
207 {
208 struct client *c = tty->client;
209 size_t size = EVBUFFER_LENGTH(tty->out);
210 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
211
212 if (size == 0)
213 tty->flags &= ~TTY_NOBLOCK;
214 else if (tty->flags & TTY_NOBLOCK)
215 return (0);
216
217 if (size < TTY_BLOCK_START(tty))
218 return (0);
219
220 if (tty->flags & TTY_BLOCK)
221 return (1);
222 tty->flags |= TTY_BLOCK;
223
224 log_debug("%s: can't keep up, %zu discarded", c->name, size);
225
226 evbuffer_drain(tty->out, size);
227 c->discarded += size;
228
229 tty->discarded = 0;
230 evtimer_add(&tty->timer, &tv);
231 return (1);
232 }
233
234 static void
235 tty_write_callback(__unused int fd, __unused short events, void *data)
236 {
237 struct tty *tty = data;
238 struct client *c = tty->client;
239 size_t size = EVBUFFER_LENGTH(tty->out);
240 int nwrite;
241
242 nwrite = evbuffer_write(tty->out, c->fd);
243 if (nwrite == -1)
244 return;
245 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
246
247 if (c->redraw > 0) {
248 if ((size_t)nwrite >= c->redraw)
249 c->redraw = 0;
250 else
251 c->redraw -= nwrite;
252 log_debug("%s: waiting for redraw, %zu bytes left", c->name,
253 c->redraw);
254 } else if (tty_block_maybe(tty))
255 return;
256
257 if (EVBUFFER_LENGTH(tty->out) != 0)
258 event_add(&tty->event_out, NULL);
259 }
260
261 int
262 tty_open(struct tty *tty, char **cause)
263 {
264 struct client *c = tty->client;
265
266 tty->term = tty_term_create(tty, c->term_name, c->term_caps,
267 c->term_ncaps, &c->term_features, cause);
268 if (tty->term == NULL) {
269 tty_close(tty);
270 return (-1);
271 }
272 tty->flags |= TTY_OPENED;
273
274 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
275
276 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
277 tty_read_callback, tty);
278 tty->in = evbuffer_new();
279 if (tty->in == NULL)
280 fatal("out of memory");
281
282 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
283 tty->out = evbuffer_new();
284 if (tty->out == NULL)
285 fatal("out of memory");
286
287 evtimer_set(&tty->timer, tty_timer_callback, tty);
288
289 tty_start_tty(tty);
290 tty_keys_build(tty);
291
292 return (0);
293 }
294
295 static void
296 tty_start_timer_callback(__unused int fd, __unused short events, void *data)
297 {
298 struct tty *tty = data;
299 struct client *c = tty->client;
300
301 log_debug("%s: start timer fired", c->name);
302 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
303 tty_update_features(tty);
304 tty->flags |= TTY_ALL_REQUEST_FLAGS;
305 }
306
307 void
308 tty_start_tty(struct tty *tty)
309 {
310 struct client *c = tty->client;
311 struct termios tio;
312 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
313
314 setblocking(c->fd, 0);
315 event_add(&tty->event_in, NULL);
316
317 memcpy(&tio, &tty->tio, sizeof tio);
318 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
319 tio.c_iflag |= IGNBRK;
320 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
321 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
322 ECHOKE|ISIG);
323 tio.c_cc[VMIN] = 1;
324 tio.c_cc[VTIME] = 0;
325 if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
326 tcflush(c->fd, TCOFLUSH);
327
328 tty_putcode(tty, TTYC_SMCUP);
329
330 tty_putcode(tty, TTYC_SMKX);
331 tty_putcode(tty, TTYC_CLEAR);
332
333 if (tty_acs_needed(tty)) {
334 log_debug("%s: using capabilities for ACS", c->name);
335 tty_putcode(tty, TTYC_ENACS);
336 } else
337 log_debug("%s: using UTF-8 for ACS", c->name);
338
339 tty_putcode(tty, TTYC_CNORM);
340 if (tty_term_has(tty->term, TTYC_KMOUS)) {
341 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
342 tty_puts(tty, "\033[?1006l\033[?1005l");
343 }
344 if (tty_term_has(tty->term, TTYC_ENBP))
345 tty_putcode(tty, TTYC_ENBP);
346
347 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
348 evtimer_add(&tty->start_timer, &tv);
349
350 tty->flags |= TTY_STARTED;
351 tty_invalidate(tty);
352
353 if (tty->ccolour != -1)
354 tty_force_cursor_colour(tty, -1);
355
356 tty->mouse_drag_flag = 0;
357 tty->mouse_drag_update = NULL;
358 tty->mouse_drag_release = NULL;
359 }
360
361 void
362 tty_send_requests(struct tty *tty)
363 {
364 if (~tty->flags & TTY_STARTED)
365 return;
366
367 if (tty->term->flags & TERM_VT100LIKE) {
368 if (~tty->term->flags & TTY_HAVEDA)
369 tty_puts(tty, "\033[c");
370 if (~tty->flags & TTY_HAVEDA2)
371 tty_puts(tty, "\033[>c");
372 if (~tty->flags & TTY_HAVEXDA)
373 tty_puts(tty, "\033[>q");
374 if (~tty->flags & TTY_HAVEFG)
375 tty_puts(tty, "\033]10;?\033\\");
376 if (~tty->flags & TTY_HAVEBG)
377 tty_puts(tty, "\033]11;?\033\\");
378 } else
379 tty->flags |= TTY_ALL_REQUEST_FLAGS;
380 }
381
382 void
383 tty_stop_tty(struct tty *tty)
384 {
385 struct client *c = tty->client;
386 struct winsize ws;
387
388 if (!(tty->flags & TTY_STARTED))
389 return;
390 tty->flags &= ~TTY_STARTED;
391
392 evtimer_del(&tty->start_timer);
393
394 event_del(&tty->timer);
395 tty->flags &= ~TTY_BLOCK;
396
397 event_del(&tty->event_in);
398 event_del(&tty->event_out);
399
400 /*
401 * Be flexible about error handling and try not kill the server just
402 * because the fd is invalid. Things like ssh -t can easily leave us
403 * with a dead tty.
404 */
405 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
406 return;
407 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
408 return;
409
410 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
411 if (tty_acs_needed(tty))
412 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
413 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
414 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
415 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
416 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
417 if (tty_term_has(tty->term, TTYC_SE))
418 tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
419 else if (tty_term_has(tty->term, TTYC_SS))
420 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
421 }
422 if (tty->ccolour != -1)
423 tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
424
425 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
426 if (tty_term_has(tty->term, TTYC_KMOUS)) {
427 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
428 tty_raw(tty, "\033[?1006l\033[?1005l");
429 }
430 if (tty_term_has(tty->term, TTYC_DSBP))
431 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
432
433 if (tty->term->flags & TERM_VT100LIKE)
434 tty_raw(tty, "\033[?7727l");
435 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
436 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
437
438 if (tty_use_margin(tty))
439 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
440 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
441
442 setblocking(c->fd, 1);
443 }
444
445 void
446 tty_close(struct tty *tty)
447 {
448 if (event_initialized(&tty->key_timer))
449 evtimer_del(&tty->key_timer);
450 tty_stop_tty(tty);
451
452 if (tty->flags & TTY_OPENED) {
453 evbuffer_free(tty->in);
454 event_del(&tty->event_in);
455 evbuffer_free(tty->out);
456 event_del(&tty->event_out);
457
458 tty_term_free(tty->term);
459 tty_keys_free(tty);
460
461 tty->flags &= ~TTY_OPENED;
462 }
463 }
464
465 void
466 tty_free(struct tty *tty)
467 {
468 tty_close(tty);
469 }
470
471 void
472 tty_update_features(struct tty *tty)
473 {
474 struct client *c = tty->client;
475
476 if (tty_apply_features(tty->term, c->term_features))
477 tty_term_apply_overrides(tty->term);
478
479 if (tty_use_margin(tty))
480 tty_putcode(tty, TTYC_ENMG);
481 if (options_get_number(global_options, "extended-keys"))
482 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
483 if (options_get_number(global_options, "focus-events"))
484 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
485 if (tty->term->flags & TERM_VT100LIKE)
486 tty_puts(tty, "\033[?7727h");
487 }
488
489 void
490 tty_raw(struct tty *tty, const char *s)
491 {
492 struct client *c = tty->client;
493 ssize_t n, slen;
494 u_int i;
495
496 slen = strlen(s);
497 for (i = 0; i < 5; i++) {
498 n = write(c->fd, s, slen);
499 if (n >= 0) {
500 s += n;
501 slen -= n;
502 if (slen == 0)
503 break;
504 } else if (n == -1 && errno != EAGAIN)
505 break;
506 usleep(100);
507 }
508 }
509
510 void
511 tty_putcode(struct tty *tty, enum tty_code_code code)
512 {
513 tty_puts(tty, tty_term_string(tty->term, code));
514 }
515
516 void
517 tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
518 {
519 if (a < 0)
520 return;
521 tty_puts(tty, tty_term_string1(tty->term, code, a));
522 }
523
524 void
525 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
526 {
527 if (a < 0 || b < 0)
528 return;
529 tty_puts(tty, tty_term_string2(tty->term, code, a, b));
530 }
531
532 void
533 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
534 {
535 if (a < 0 || b < 0 || c < 0)
536 return;
537 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
538 }
539
540 void
541 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
542 {
543 if (a != NULL)
544 tty_puts(tty, tty_term_ptr1(tty->term, code, a));
545 }
546
547 void
548 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
549 const void *b)
550 {
551 if (a != NULL && b != NULL)
552 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
553 }
554
555 static void
556 tty_add(struct tty *tty, const char *buf, size_t len)
557 {
558 struct client *c = tty->client;
559
560 if (tty->flags & TTY_BLOCK) {
561 tty->discarded += len;
562 return;
563 }
564
565 evbuffer_add(tty->out, buf, len);
566 log_debug("%s: %.*s", c->name, (int)len, buf);
567 c->written += len;
568
569 if (tty_log_fd != -1)
570 write(tty_log_fd, buf, len);
571 if (tty->flags & TTY_STARTED)
572 event_add(&tty->event_out, NULL);
573 }
574
575 void
576 tty_puts(struct tty *tty, const char *s)
577 {
578 if (*s != '\0')
579 tty_add(tty, s, strlen(s));
580 }
581
582 void
583 tty_putc(struct tty *tty, u_char ch)
584 {
585 const char *acs;
586
587 if ((tty->term->flags & TERM_NOAM) &&
588 ch >= 0x20 && ch != 0x7f &&
589 tty->cy == tty->sy - 1 &&
590 tty->cx + 1 >= tty->sx)
591 return;
592
593 if (tty->cell.attr & GRID_ATTR_CHARSET) {
594 acs = tty_acs_get(tty, ch);
595 if (acs != NULL)
596 tty_add(tty, acs, strlen(acs));
597 else
598 tty_add(tty, &ch, 1);
599 } else
600 tty_add(tty, &ch, 1);
601
602 if (ch >= 0x20 && ch != 0x7f) {
603 if (tty->cx >= tty->sx) {
604 tty->cx = 1;
605 if (tty->cy != tty->rlower)
606 tty->cy++;
607
608 /*
609 * On !am terminals, force the cursor position to where
610 * we think it should be after a line wrap - this means
611 * it works on sensible terminals as well.
612 */
613 if (tty->term->flags & TERM_NOAM)
614 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
615 } else
616 tty->cx++;
617 }
618 }
619
620 void
621 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
622 {
623 if ((tty->term->flags & TERM_NOAM) &&
624 tty->cy == tty->sy - 1 &&
625 tty->cx + len >= tty->sx)
626 len = tty->sx - tty->cx - 1;
627
628 tty_add(tty, buf, len);
629 if (tty->cx + width > tty->sx) {
630 tty->cx = (tty->cx + width) - tty->sx;
631 if (tty->cx <= tty->sx)
632 tty->cy++;
633 else
634 tty->cx = tty->cy = UINT_MAX;
635 } else
636 tty->cx += width;
637 }
638
639 static void
640 tty_set_italics(struct tty *tty)
641 {
642 const char *s;
643
644 if (tty_term_has(tty->term, TTYC_SITM)) {
645 s = options_get_string(global_options, "default-terminal");
646 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
647 tty_putcode(tty, TTYC_SITM);
648 return;
649 }
650 }
651 tty_putcode(tty, TTYC_SMSO);
652 }
653
654 void
655 tty_set_title(struct tty *tty, const char *title)
656 {
657 if (!tty_term_has(tty->term, TTYC_TSL) ||
658 !tty_term_has(tty->term, TTYC_FSL))
659 return;
660
661 tty_putcode(tty, TTYC_TSL);
662 tty_puts(tty, title);
663 tty_putcode(tty, TTYC_FSL);
664 }
665
666 void
667 tty_set_path(struct tty *tty, const char *title)
668 {
669 if (!tty_term_has(tty->term, TTYC_SWD) ||
670 !tty_term_has(tty->term, TTYC_FSL))
671 return;
672
673 tty_putcode(tty, TTYC_SWD);
674 tty_puts(tty, title);
675 tty_putcode(tty, TTYC_FSL);
676 }
677
678 static void
679 tty_force_cursor_colour(struct tty *tty, int c)
680 {
681 u_char r, g, b;
682 char s[13];
683
684 if (c != -1)
685 c = colour_force_rgb(c);
686 if (c == tty->ccolour)
687 return;
688 if (c == -1)
689 tty_putcode(tty, TTYC_CR);
690 else {
691 colour_split_rgb(c, &r, &g, &b);
692 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
693 tty_putcode_ptr1(tty, TTYC_CS, s);
694 }
695 tty->ccolour = c;
696 }
697
698 static int
699 tty_update_cursor(struct tty *tty, int mode, struct screen *s)
700 {
701 enum screen_cursor_style cstyle;
702 int ccolour, changed, cmode = mode;
703
704 /* Set cursor colour if changed. */
705 if (s != NULL) {
706 ccolour = s->ccolour;
707 if (s->ccolour == -1)
708 ccolour = s->default_ccolour;
709 tty_force_cursor_colour(tty, ccolour);
710 }
711
712 /* If cursor is off, set as invisible. */
713 if (~cmode & MODE_CURSOR) {
714 if (tty->mode & MODE_CURSOR)
715 tty_putcode(tty, TTYC_CIVIS);
716 return (cmode);
717 }
718
719 /* Check if blinking or very visible flag changed or style changed. */
720 if (s == NULL)
721 cstyle = tty->cstyle;
722 else {
723 cstyle = s->cstyle;
724 if (cstyle == SCREEN_CURSOR_DEFAULT) {
725 if (~cmode & MODE_CURSOR_BLINKING_SET) {
726 if (s->default_mode & MODE_CURSOR_BLINKING)
727 cmode |= MODE_CURSOR_BLINKING;
728 else
729 cmode &= ~MODE_CURSOR_BLINKING;
730 }
731 cstyle = s->default_cstyle;
732 }
733 }
734
735 /* If nothing changed, do nothing. */
736 changed = cmode ^ tty->mode;
737 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
738 return (cmode);
739
740 /*
741 * Set cursor style. If an explicit style has been set with DECSCUSR,
742 * set it if supported, otherwise send cvvis for blinking styles.
743 *
744 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
745 * if either the blinking or very visible flags are set.
746 */
747 tty_putcode(tty, TTYC_CNORM);
748 switch (cstyle) {
749 case SCREEN_CURSOR_DEFAULT:
750 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
751 if (tty_term_has(tty->term, TTYC_SE))
752 tty_putcode(tty, TTYC_SE);
753 else
754 tty_putcode1(tty, TTYC_SS, 0);
755 }
756 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
757 tty_putcode(tty, TTYC_CVVIS);
758 break;
759 case SCREEN_CURSOR_BLOCK:
760 if (tty_term_has(tty->term, TTYC_SS)) {
761 if (cmode & MODE_CURSOR_BLINKING)
762 tty_putcode1(tty, TTYC_SS, 1);
763 else
764 tty_putcode1(tty, TTYC_SS, 2);
765 } else if (cmode & MODE_CURSOR_BLINKING)
766 tty_putcode(tty, TTYC_CVVIS);
767 break;
768 case SCREEN_CURSOR_UNDERLINE:
769 if (tty_term_has(tty->term, TTYC_SS)) {
770 if (cmode & MODE_CURSOR_BLINKING)
771 tty_putcode1(tty, TTYC_SS, 3);
772 else
773 tty_putcode1(tty, TTYC_SS, 4);
774 } else if (cmode & MODE_CURSOR_BLINKING)
775 tty_putcode(tty, TTYC_CVVIS);
776 break;
777 case SCREEN_CURSOR_BAR:
778 if (tty_term_has(tty->term, TTYC_SS)) {
779 if (cmode & MODE_CURSOR_BLINKING)
780 tty_putcode1(tty, TTYC_SS, 5);
781 else
782 tty_putcode1(tty, TTYC_SS, 6);
783 } else if (cmode & MODE_CURSOR_BLINKING)
784 tty_putcode(tty, TTYC_CVVIS);
785 break;
786 }
787 tty->cstyle = cstyle;
788 return (cmode);
789 }
790
791 void
792 tty_update_mode(struct tty *tty, int mode, struct screen *s)
793 {
794 struct tty_term *term = tty->term;
795 struct client *c = tty->client;
796 int changed;
797
798 if (tty->flags & TTY_NOCURSOR)
799 mode &= ~MODE_CURSOR;
800
801 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
802 mode |= MODE_CURSOR_BLINKING;
803 else
804 mode &= ~MODE_CURSOR_BLINKING;
805
806 changed = mode ^ tty->mode;
807 if (log_get_level() != 0 && changed != 0) {
808 log_debug("%s: current mode %s", c->name,
809 screen_mode_to_string(tty->mode));
810 log_debug("%s: setting mode %s", c->name,
811 screen_mode_to_string(mode));
812 }
813
814 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
815 /*
816 * If the mouse modes have changed, clear then all and apply
817 * again. There are differences in how terminals track the
818 * various bits.
819 */
820 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
821 if (mode & ALL_MOUSE_MODES)
822 tty_puts(tty, "\033[?1006h");
823 if (mode & MODE_MOUSE_ALL)
824 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
825 else if (mode & MODE_MOUSE_BUTTON)
826 tty_puts(tty, "\033[?1000h\033[?1002h");
827 else if (mode & MODE_MOUSE_STANDARD)
828 tty_puts(tty, "\033[?1000h");
829 }
830 tty->mode = mode;
831 }
832
833 static void
834 tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
835 enum tty_code_code code1, u_int n)
836 {
837 if (tty_term_has(tty->term, code))
838 tty_putcode1(tty, code, n);
839 else {
840 while (n-- > 0)
841 tty_putcode(tty, code1);
842 }
843 }
844
845 static void
846 tty_repeat_space(struct tty *tty, u_int n)
847 {
848 static char s[500];
849
850 if (*s != ' ')
851 memset(s, ' ', sizeof s);
852
853 while (n > sizeof s) {
854 tty_putn(tty, s, sizeof s, sizeof s);
855 n -= sizeof s;
856 }
857 if (n != 0)
858 tty_putn(tty, s, n, n);
859 }
860
861 /* Is this window bigger than the terminal? */
862 int
863 tty_window_bigger(struct tty *tty)
864 {
865 struct client *c = tty->client;
866 struct window *w = c->session->curw->window;
867
868 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
869 }
870
871 /* What offset should this window be drawn at? */
872 int
873 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
874 {
875 *ox = tty->oox;
876 *oy = tty->ooy;
877 *sx = tty->osx;
878 *sy = tty->osy;
879
880 return (tty->oflag);
881 }
882
883 /* What offset should this window be drawn at? */
884 static int
885 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
886 {
887 struct client *c = tty->client;
888 struct window *w = c->session->curw->window;
889 struct window_pane *wp = server_client_get_pane(c);
890 u_int cx, cy, lines;
891
892 lines = status_line_size(c);
893
894 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
895 *ox = 0;
896 *oy = 0;
897 *sx = w->sx;
898 *sy = w->sy;
899
900 c->pan_window = NULL;
901 return (0);
902 }
903
904 *sx = tty->sx;
905 *sy = tty->sy - lines;
906
907 if (c->pan_window == w) {
908 if (*sx >= w->sx)
909 c->pan_ox = 0;
910 else if (c->pan_ox + *sx > w->sx)
911 c->pan_ox = w->sx - *sx;
912 *ox = c->pan_ox;
913 if (*sy >= w->sy)
914 c->pan_oy = 0;
915 else if (c->pan_oy + *sy > w->sy)
916 c->pan_oy = w->sy - *sy;
917 *oy = c->pan_oy;
918 return (1);
919 }
920
921 if (~wp->screen->mode & MODE_CURSOR) {
922 *ox = 0;
923 *oy = 0;
924 } else {
925 cx = wp->xoff + wp->screen->cx;
926 cy = wp->yoff + wp->screen->cy;
927
928 if (cx < *sx)
929 *ox = 0;
930 else if (cx > w->sx - *sx)
931 *ox = w->sx - *sx;
932 else
933 *ox = cx - *sx / 2;
934
935 if (cy < *sy)
936 *oy = 0;
937 else if (cy > w->sy - *sy)
938 *oy = w->sy - *sy;
939 else
940 *oy = cy - *sy / 2;
941 }
942
943 c->pan_window = NULL;
944 return (1);
945 }
946
947 /* Update stored offsets for a window and redraw if necessary. */
948 void
949 tty_update_window_offset(struct window *w)
950 {
951 struct client *c;
952
953 TAILQ_FOREACH(c, &clients, entry) {
954 if (c->session != NULL &&
955 c->session->curw != NULL &&
956 c->session->curw->window == w)
957 tty_update_client_offset(c);
958 }
959 }
960
961 /* Update stored offsets for a client and redraw if necessary. */
962 void
963 tty_update_client_offset(struct client *c)
964 {
965 u_int ox, oy, sx, sy;
966
967 if (~c->flags & CLIENT_TERMINAL)
968 return;
969
970 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
971 if (ox == c->tty.oox &&
972 oy == c->tty.ooy &&
973 sx == c->tty.osx &&
974 sy == c->tty.osy)
975 return;
976
977 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
978 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
979 ox, oy, sx, sy);
980
981 c->tty.oox = ox;
982 c->tty.ooy = oy;
983 c->tty.osx = sx;
984 c->tty.osy = sy;
985
986 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
987 }
988
989 /*
990 * Is the region large enough to be worth redrawing once later rather than
991 * probably several times now? Currently yes if it is more than 50% of the
992 * pane.
993 */
994 static int
995 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
996 {
997 return (ctx->orlower - ctx->orupper >= ctx->sy / 2);
998 }
999
1000 /*
1001 * Return if BCE is needed but the terminal doesn't have it - it'll need to be
1002 * emulated.
1003 */
1004 static int
1005 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg)
1006 {
1007 if (tty_term_flag(tty->term, TTYC_BCE))
1008 return (0);
1009 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg))
1010 return (1);
1011 return (0);
1012 }
1013
1014 /*
1015 * Redraw scroll region using data from screen (already updated). Used when
1016 * CSR not supported, or window is a pane that doesn't take up the full
1017 * width of the terminal.
1018 */
1019 static void
1020 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1021 {
1022 struct client *c = tty->client;
1023 u_int i;
1024
1025 /*
1026 * If region is large, schedule a redraw. In most cases this is likely
1027 * to be followed by some more scrolling.
1028 */
1029 if (tty_large_region(tty, ctx)) {
1030 log_debug("%s: %s large redraw", __func__, c->name);
1031 ctx->redraw_cb(ctx);
1032 return;
1033 }
1034
1035 for (i = ctx->orupper; i <= ctx->orlower; i++)
1036 tty_draw_pane(tty, ctx, i);
1037 }
1038
1039 /* Is this position visible in the pane? */
1040 static int
1041 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px,
1042 u_int py, u_int nx, u_int ny)
1043 {
1044 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1045
1046 if (!ctx->bigger)
1047 return (1);
1048
1049 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx ||
1050 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy)
1051 return (0);
1052 return (1);
1053 }
1054
1055 /* Clamp line position to visible part of pane. */
1056 static int
1057 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1058 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
1059 {
1060 u_int xoff = ctx->rxoff + px;
1061
1062 if (!tty_is_visible(tty, ctx, px, py, nx, 1))
1063 return (0);
1064 *ry = ctx->yoff + py - ctx->woy;
1065
1066 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1067 /* All visible. */
1068 *i = 0;
1069 *x = ctx->xoff + px - ctx->wox;
1070 *rx = nx;
1071 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1072 /* Both left and right not visible. */
1073 *i = ctx->wox;
1074 *x = 0;
1075 *rx = ctx->wsx;
1076 } else if (xoff < ctx->wox) {
1077 /* Left not visible. */
1078 *i = ctx->wox - (ctx->xoff + px);
1079 *x = 0;
1080 *rx = nx - *i;
1081 } else {
1082 /* Right not visible. */
1083 *i = 0;
1084 *x = (ctx->xoff + px) - ctx->wox;
1085 *rx = ctx->wsx - *x;
1086 }
1087 if (*rx > nx)
1088 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1089
1090 return (1);
1091 }
1092
1093 /* Clear a line. */
1094 static void
1095 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py,
1096 u_int px, u_int nx, u_int bg)
1097 {
1098 struct client *c = tty->client;
1099 struct overlay_ranges r;
1100 u_int i;
1101
1102 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1103
1104 /* Nothing to clear. */
1105 if (nx == 0)
1106 return;
1107
1108 /* If genuine BCE is available, can try escape sequences. */
1109 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1110 /* Off the end of the line, use EL if available. */
1111 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
1112 tty_cursor(tty, px, py);
1113 tty_putcode(tty, TTYC_EL);
1114 return;
1115 }
1116
1117 /* At the start of the line. Use EL1. */
1118 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
1119 tty_cursor(tty, px + nx - 1, py);
1120 tty_putcode(tty, TTYC_EL1);
1121 return;
1122 }
1123
1124 /* Section of line. Use ECH if possible. */
1125 if (tty_term_has(tty->term, TTYC_ECH)) {
1126 tty_cursor(tty, px, py);
1127 tty_putcode1(tty, TTYC_ECH, nx);
1128 return;
1129 }
1130 }
1131
1132 /*
1133 * Couldn't use an escape sequence, use spaces. Clear only the visible
1134 * bit if there is an overlay.
1135 */
1136 tty_check_overlay_range(tty, px, py, nx, &r);
1137 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
1138 if (r.nx[i] == 0)
1139 continue;
1140 tty_cursor(tty, r.px[i], py);
1141 tty_repeat_space(tty, r.nx[i]);
1142 }
1143 }
1144
1145 /* Clear a line, adjusting to visible part of pane. */
1146 static void
1147 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1148 u_int px, u_int nx, u_int bg)
1149 {
1150 struct client *c = tty->client;
1151 u_int i, x, rx, ry;
1152
1153 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1154
1155 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
1156 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg);
1157 }
1158
1159 /* Clamp area position to visible part of pane. */
1160 static int
1161 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
1162 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
1163 u_int *ry)
1164 {
1165 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py;
1166
1167 if (!tty_is_visible(tty, ctx, px, py, nx, ny))
1168 return (0);
1169
1170 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) {
1171 /* All visible. */
1172 *i = 0;
1173 *x = ctx->xoff + px - ctx->wox;
1174 *rx = nx;
1175 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) {
1176 /* Both left and right not visible. */
1177 *i = ctx->wox;
1178 *x = 0;
1179 *rx = ctx->wsx;
1180 } else if (xoff < ctx->wox) {
1181 /* Left not visible. */
1182 *i = ctx->wox - (ctx->xoff + px);
1183 *x = 0;
1184 *rx = nx - *i;
1185 } else {
1186 /* Right not visible. */
1187 *i = 0;
1188 *x = (ctx->xoff + px) - ctx->wox;
1189 *rx = ctx->wsx - *x;
1190 }
1191 if (*rx > nx)
1192 fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
1193
1194 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) {
1195 /* All visible. */
1196 *j = 0;
1197 *y = ctx->yoff + py - ctx->woy;
1198 *ry = ny;
1199 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) {
1200 /* Both top and bottom not visible. */
1201 *j = ctx->woy;
1202 *y = 0;
1203 *ry = ctx->wsy;
1204 } else if (yoff < ctx->woy) {
1205 /* Top not visible. */
1206 *j = ctx->woy - (ctx->yoff + py);
1207 *y = 0;
1208 *ry = ny - *j;
1209 } else {
1210 /* Bottom not visible. */
1211 *j = 0;
1212 *y = (ctx->yoff + py) - ctx->woy;
1213 *ry = ctx->wsy - *y;
1214 }
1215 if (*ry > ny)
1216 fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
1217
1218 return (1);
1219 }
1220
1221 /* Clear an area, adjusting to visible part of pane. */
1222 static void
1223 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py,
1224 u_int ny, u_int px, u_int nx, u_int bg)
1225 {
1226 struct client *c = tty->client;
1227 u_int yy;
1228 char tmp[64];
1229
1230 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1231
1232 /* Nothing to clear. */
1233 if (nx == 0 || ny == 0)
1234 return;
1235
1236 /* If genuine BCE is available, can try escape sequences. */
1237 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) {
1238 /* Use ED if clearing off the bottom of the terminal. */
1239 if (px == 0 &&
1240 px + nx >= tty->sx &&
1241 py + ny >= tty->sy &&
1242 tty_term_has(tty->term, TTYC_ED)) {
1243 tty_cursor(tty, 0, py);
1244 tty_putcode(tty, TTYC_ED);
1245 return;
1246 }
1247
1248 /*
1249 * On VT420 compatible terminals we can use DECFRA if the
1250 * background colour isn't default (because it doesn't work
1251 * after SGR 0).
1252 */
1253 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1254 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
1255 py + 1, px + 1, py + ny, px + nx);
1256 tty_puts(tty, tmp);
1257 return;
1258 }
1259
1260 /* Full lines can be scrolled away to clear them. */
1261 if (px == 0 &&
1262 px + nx >= tty->sx &&
1263 ny > 2 &&
1264 tty_term_has(tty->term, TTYC_CSR) &&
1265 tty_term_has(tty->term, TTYC_INDN)) {
1266 tty_region(tty, py, py + ny - 1);
1267 tty_margin_off(tty);
1268 tty_putcode1(tty, TTYC_INDN, ny);
1269 return;
1270 }
1271
1272 /*
1273 * If margins are supported, can just scroll the area off to
1274 * clear it.
1275 */
1276 if (nx > 2 &&
1277 ny > 2 &&
1278 tty_term_has(tty->term, TTYC_CSR) &&
1279 tty_use_margin(tty) &&
1280 tty_term_has(tty->term, TTYC_INDN)) {
1281 tty_region(tty, py, py + ny - 1);
1282 tty_margin(tty, px, px + nx - 1);
1283 tty_putcode1(tty, TTYC_INDN, ny);
1284 return;
1285 }
1286 }
1287
1288 /* Couldn't use an escape sequence, loop over the lines. */
1289 for (yy = py; yy < py + ny; yy++)
1290 tty_clear_line(tty, defaults, yy, px, nx, bg);
1291 }
1292
1293 /* Clear an area in a pane. */
1294 static void
1295 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
1296 u_int ny, u_int px, u_int nx, u_int bg)
1297 {
1298 u_int i, j, x, y, rx, ry;
1299
1300 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
1301 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg);
1302 }
1303
1304 static void
1305 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1306 {
1307 struct screen *s = ctx->s;
1308 u_int nx = ctx->sx, i, x, rx, ry;
1309
1310 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
1311
1312 if (!ctx->bigger) {
1313 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py,
1314 &ctx->defaults, ctx->palette);
1315 return;
1316 }
1317 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) {
1318 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults,
1319 ctx->palette);
1320 }
1321 }
1322
1323 static const struct grid_cell *
1324 tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
1325 {
1326 static struct grid_cell new;
1327 int c;
1328
1329 /* Characters less than 0x7f are always fine, no matter what. */
1330 if (gc->data.size == 1 && *gc->data.data < 0x7f)
1331 return (gc);
1332
1333 /* UTF-8 terminal and a UTF-8 character - fine. */
1334 if (tty->client->flags & CLIENT_UTF8)
1335 return (gc);
1336 memcpy(&new, gc, sizeof new);
1337
1338 /* See if this can be mapped to an ACS character. */
1339 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size);
1340 if (c != -1) {
1341 utf8_set(&new.data, c);
1342 new.attr |= GRID_ATTR_CHARSET;
1343 return (&new);
1344 }
1345
1346 /* Replace by the right number of underscores. */
1347 new.data.size = gc->data.width;
1348 if (new.data.size > UTF8_SIZE)
1349 new.data.size = UTF8_SIZE;
1350 memset(new.data.data, '_', new.data.size);
1351 return (&new);
1352 }
1353
1354 /*
1355 * Check if a single character is obstructed by the overlay and return a
1356 * boolean.
1357 */
1358 static int
1359 tty_check_overlay(struct tty *tty, u_int px, u_int py)
1360 {
1361 struct overlay_ranges r;
1362
1363 /*
1364 * A unit width range will always return nx[2] == 0 from a check, even
1365 * with multiple overlays, so it's sufficient to check just the first
1366 * two entries.
1367 */
1368 tty_check_overlay_range(tty, px, py, 1, &r);
1369 if (r.nx[0] + r.nx[1] == 0)
1370 return (0);
1371 return (1);
1372 }
1373
1374 /* Return parts of the input range which are visible. */
1375 static void
1376 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx,
1377 struct overlay_ranges *r)
1378 {
1379 struct client *c = tty->client;
1380
1381 if (c->overlay_check == NULL) {
1382 r->px[0] = px;
1383 r->nx[0] = nx;
1384 r->px[1] = 0;
1385 r->nx[1] = 0;
1386 r->px[2] = 0;
1387 r->nx[2] = 0;
1388 return;
1389 }
1390
1391 c->overlay_check(c, c->overlay_data, px, py, nx, r);
1392 }
1393
1394 void
1395 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx,
1396 u_int atx, u_int aty, const struct grid_cell *defaults,
1397 struct colour_palette *palette)
1398 {
1399 struct grid *gd = s->grid;
1400 struct grid_cell gc, last;
1401 const struct grid_cell *gcp;
1402 struct grid_line *gl;
1403 struct client *c = tty->client;
1404 struct overlay_ranges r;
1405 u_int i, j, ux, sx, width, hidden, eux, nxx;
1406 u_int cellsize;
1407 int flags, cleared = 0, wrapped = 0;
1408 char buf[512];
1409 size_t len;
1410
1411 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
1412 px, py, nx, atx, aty);
1413 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg,
1414 defaults->bg);
1415
1416 /*
1417 * py is the line in the screen to draw.
1418 * px is the start x and nx is the width to draw.
1419 * atx,aty is the line on the terminal to draw it.
1420 */
1421
1422 flags = (tty->flags & TTY_NOCURSOR);
1423 tty->flags |= TTY_NOCURSOR;
1424 tty_update_mode(tty, tty->mode, s);
1425
1426 tty_region_off(tty);
1427 tty_margin_off(tty);
1428
1429 /*
1430 * Clamp the width to cellsize - note this is not cellused, because
1431 * there may be empty background cells after it (from BCE).
1432 */
1433 sx = screen_size_x(s);
1434 if (nx > sx)
1435 nx = sx;
1436 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
1437 if (sx > cellsize)
1438 sx = cellsize;
1439 if (sx > tty->sx)
1440 sx = tty->sx;
1441 if (sx > nx)
1442 sx = nx;
1443 ux = 0;
1444
1445 if (py == 0)
1446 gl = NULL;
1447 else
1448 gl = grid_get_line(gd, gd->hsize + py - 1);
1449 if (gl == NULL ||
1450 (~gl->flags & GRID_LINE_WRAPPED) ||
1451 atx != 0 ||
1452 tty->cx < tty->sx ||
1453 nx < tty->sx) {
1454 if (nx < tty->sx &&
1455 atx == 0 &&
1456 px + sx != nx &&
1457 tty_term_has(tty->term, TTYC_EL1) &&
1458 !tty_fake_bce(tty, defaults, 8) &&
1459 c->overlay_check == NULL) {
1460 tty_default_attributes(tty, defaults, palette, 8,
1461 s->hyperlinks);
1462 tty_cursor(tty, nx - 1, aty);
1463 tty_putcode(tty, TTYC_EL1);
1464 cleared = 1;
1465 }
1466 } else {
1467 log_debug("%s: wrapped line %u", __func__, aty);
1468 wrapped = 1;
1469 }
1470
1471 memcpy(&last, &grid_default_cell, sizeof last);
1472 len = 0;
1473 width = 0;
1474
1475 for (i = 0; i < sx; i++) {
1476 grid_view_get_cell(gd, px + i, py, &gc);
1477 gcp = tty_check_codeset(tty, &gc);
1478 if (len != 0 &&
1479 (!tty_check_overlay(tty, atx + ux + width, aty) ||
1480 (gcp->attr & GRID_ATTR_CHARSET) ||
1481 gcp->flags != last.flags ||
1482 gcp->attr != last.attr ||
1483 gcp->fg != last.fg ||
1484 gcp->bg != last.bg ||
1485 gcp->us != last.us ||
1486 gcp->link != last.link ||
1487 ux + width + gcp->data.width > nx ||
1488 (sizeof buf) - len < gcp->data.size)) {
1489 tty_attributes(tty, &last, defaults, palette,
1490 s->hyperlinks);
1491 if (last.flags & GRID_FLAG_CLEARED) {
1492 log_debug("%s: %zu cleared", __func__, len);
1493 tty_clear_line(tty, defaults, aty, atx + ux,
1494 width, last.bg);
1495 } else {
1496 if (!wrapped || atx != 0 || ux != 0)
1497 tty_cursor(tty, atx + ux, aty);
1498 tty_putn(tty, buf, len, width);
1499 }
1500 ux += width;
1501
1502 len = 0;
1503 width = 0;
1504 wrapped = 0;
1505 }
1506
1507 if (gcp->flags & GRID_FLAG_SELECTED)
1508 screen_select_cell(s, &last, gcp);
1509 else
1510 memcpy(&last, gcp, sizeof last);
1511
1512 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width,
1513 &r);
1514 hidden = 0;
1515 for (j = 0; j < OVERLAY_MAX_RANGES; j++)
1516 hidden += r.nx[j];
1517 hidden = gcp->data.width - hidden;
1518 if (hidden != 0 && hidden == gcp->data.width) {
1519 if (~gcp->flags & GRID_FLAG_PADDING)
1520 ux += gcp->data.width;
1521 } else if (hidden != 0 || ux + gcp->data.width > nx) {
1522 if (~gcp->flags & GRID_FLAG_PADDING) {
1523 tty_attributes(tty, &last, defaults, palette,
1524 s->hyperlinks);
1525 for (j = 0; j < OVERLAY_MAX_RANGES; j++) {
1526 if (r.nx[j] == 0)
1527 continue;
1528 /* Effective width drawn so far. */
1529 eux = r.px[j] - atx;
1530 if (eux < nx) {
1531 tty_cursor(tty, r.px[j], aty);
1532 nxx = nx - eux;
1533 if (r.nx[j] > nxx)
1534 r.nx[j] = nxx;
1535 tty_repeat_space(tty, r.nx[j]);
1536 ux = eux + r.nx[j];
1537 }
1538 }
1539 }
1540 } else if (gcp->attr & GRID_ATTR_CHARSET) {
1541 tty_attributes(tty, &last, defaults, palette,
1542 s->hyperlinks);
1543 tty_cursor(tty, atx + ux, aty);
1544 for (j = 0; j < gcp->data.size; j++)
1545 tty_putc(tty, gcp->data.data[j]);
1546 ux += gcp->data.width;
1547 } else if (~gcp->flags & GRID_FLAG_PADDING) {
1548 memcpy(buf + len, gcp->data.data, gcp->data.size);
1549 len += gcp->data.size;
1550 width += gcp->data.width;
1551 }
1552 }
1553 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1554 tty_attributes(tty, &last, defaults, palette, s->hyperlinks);
1555 if (last.flags & GRID_FLAG_CLEARED) {
1556 log_debug("%s: %zu cleared (end)", __func__, len);
1557 tty_clear_line(tty, defaults, aty, atx + ux, width,
1558 last.bg);
1559 } else {
1560 if (!wrapped || atx != 0 || ux != 0)
1561 tty_cursor(tty, atx + ux, aty);
1562 tty_putn(tty, buf, len, width);
1563 }
1564 ux += width;
1565 }
1566
1567 if (!cleared && ux < nx) {
1568 log_debug("%s: %u to end of line (%zu cleared)", __func__,
1569 nx - ux, len);
1570 tty_default_attributes(tty, defaults, palette, 8,
1571 s->hyperlinks);
1572 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8);
1573 }
1574
1575 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1576 tty_update_mode(tty, tty->mode, s);
1577 }
1578
1579 void
1580 tty_sync_start(struct tty *tty)
1581 {
1582 if (tty->flags & TTY_BLOCK)
1583 return;
1584 if (tty->flags & TTY_SYNCING)
1585 return;
1586 tty->flags |= TTY_SYNCING;
1587
1588 if (tty_term_has(tty->term, TTYC_SYNC)) {
1589 log_debug("%s sync start", tty->client->name);
1590 tty_putcode1(tty, TTYC_SYNC, 1);
1591 }
1592 }
1593
1594 void
1595 tty_sync_end(struct tty *tty)
1596 {
1597 if (tty->flags & TTY_BLOCK)
1598 return;
1599 if (~tty->flags & TTY_SYNCING)
1600 return;
1601 tty->flags &= ~TTY_SYNCING;
1602
1603 if (tty_term_has(tty->term, TTYC_SYNC)) {
1604 log_debug("%s sync end", tty->client->name);
1605 tty_putcode1(tty, TTYC_SYNC, 2);
1606 }
1607 }
1608
1609 static int
1610 tty_client_ready(struct client *c)
1611 {
1612 if (c->session == NULL || c->tty.term == NULL)
1613 return (0);
1614 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1615 return (0);
1616 if (c->tty.flags & TTY_FREEZE)
1617 return (0);
1618 return (1);
1619 }
1620
1621 void
1622 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
1623 struct tty_ctx *ctx)
1624 {
1625 struct client *c;
1626 int state;
1627
1628 if (ctx->set_client_cb == NULL)
1629 return;
1630 TAILQ_FOREACH(c, &clients, entry) {
1631 if (ctx->allow_invisible_panes) {
1632 if (c->session == NULL ||
1633 c->tty.term == NULL ||
1634 c->flags & CLIENT_SUSPENDED)
1635 continue;
1636 } else {
1637 if (!tty_client_ready(c))
1638 continue;
1639 state = ctx->set_client_cb(ctx, c);
1640 if (state == -1)
1641 break;
1642 if (state == 0)
1643 continue;
1644 }
1645 cmdfn(&c->tty, ctx);
1646 }
1647 }
1648
1649 void
1650 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1651 {
1652 struct client *c = tty->client;
1653
1654 if (ctx->bigger ||
1655 !tty_full_width(tty, ctx) ||
1656 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1657 (!tty_term_has(tty->term, TTYC_ICH) &&
1658 !tty_term_has(tty->term, TTYC_ICH1)) ||
1659 c->overlay_check != NULL) {
1660 tty_draw_pane(tty, ctx, ctx->ocy);
1661 return;
1662 }
1663
1664 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1665 ctx->s->hyperlinks);
1666
1667 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1668
1669 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1670 }
1671
1672 void
1673 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1674 {
1675 struct client *c = tty->client;
1676
1677 if (ctx->bigger ||
1678 !tty_full_width(tty, ctx) ||
1679 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1680 (!tty_term_has(tty->term, TTYC_DCH) &&
1681 !tty_term_has(tty->term, TTYC_DCH1)) ||
1682 c->overlay_check != NULL) {
1683 tty_draw_pane(tty, ctx, ctx->ocy);
1684 return;
1685 }
1686
1687 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1688 ctx->s->hyperlinks);
1689
1690 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1691
1692 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1693 }
1694
1695 void
1696 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
1697 {
1698 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1699 ctx->s->hyperlinks);
1700
1701 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg);
1702 }
1703
1704 void
1705 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1706 {
1707 struct client *c = tty->client;
1708
1709 if (ctx->bigger ||
1710 !tty_full_width(tty, ctx) ||
1711 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1712 !tty_term_has(tty->term, TTYC_CSR) ||
1713 !tty_term_has(tty->term, TTYC_IL1) ||
1714 ctx->sx == 1 ||
1715 ctx->sy == 1 ||
1716 c->overlay_check != NULL) {
1717 tty_redraw_region(tty, ctx);
1718 return;
1719 }
1720
1721 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1722 ctx->s->hyperlinks);
1723
1724 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1725 tty_margin_off(tty);
1726 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1727
1728 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1729 tty->cx = tty->cy = UINT_MAX;
1730 }
1731
1732 void
1733 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1734 {
1735 struct client *c = tty->client;
1736
1737 if (ctx->bigger ||
1738 !tty_full_width(tty, ctx) ||
1739 tty_fake_bce(tty, &ctx->defaults, ctx->bg) ||
1740 !tty_term_has(tty->term, TTYC_CSR) ||
1741 !tty_term_has(tty->term, TTYC_DL1) ||
1742 ctx->sx == 1 ||
1743 ctx->sy == 1 ||
1744 c->overlay_check != NULL) {
1745 tty_redraw_region(tty, ctx);
1746 return;
1747 }
1748
1749 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1750 ctx->s->hyperlinks);
1751
1752 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1753 tty_margin_off(tty);
1754 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1755
1756 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1757 tty->cx = tty->cy = UINT_MAX;
1758 }
1759
1760 void
1761 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1762 {
1763 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1764 ctx->s->hyperlinks);
1765
1766 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg);
1767 }
1768
1769 void
1770 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1771 {
1772 u_int nx = ctx->sx - ctx->ocx;
1773
1774 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1775 ctx->s->hyperlinks);
1776
1777 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1778 }
1779
1780 void
1781 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1782 {
1783 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1784 ctx->s->hyperlinks);
1785
1786 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1787 }
1788
1789 void
1790 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1791 {
1792 struct client *c = tty->client;
1793
1794 if (ctx->ocy != ctx->orupper)
1795 return;
1796
1797 if (ctx->bigger ||
1798 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1799 tty_fake_bce(tty, &ctx->defaults, 8) ||
1800 !tty_term_has(tty->term, TTYC_CSR) ||
1801 (!tty_term_has(tty->term, TTYC_RI) &&
1802 !tty_term_has(tty->term, TTYC_RIN)) ||
1803 ctx->sx == 1 ||
1804 ctx->sy == 1 ||
1805 c->overlay_check != NULL) {
1806 tty_redraw_region(tty, ctx);
1807 return;
1808 }
1809
1810 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1811 ctx->s->hyperlinks);
1812
1813 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1814 tty_margin_pane(tty, ctx);
1815 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1816
1817 if (tty_term_has(tty->term, TTYC_RI))
1818 tty_putcode(tty, TTYC_RI);
1819 else
1820 tty_putcode1(tty, TTYC_RIN, 1);
1821 }
1822
1823 void
1824 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1825 {
1826 struct client *c = tty->client;
1827
1828 if (ctx->ocy != ctx->orlower)
1829 return;
1830
1831 if (ctx->bigger ||
1832 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1833 tty_fake_bce(tty, &ctx->defaults, 8) ||
1834 !tty_term_has(tty->term, TTYC_CSR) ||
1835 ctx->sx == 1 ||
1836 ctx->sy == 1 ||
1837 c->overlay_check != NULL) {
1838 tty_redraw_region(tty, ctx);
1839 return;
1840 }
1841
1842 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1843 ctx->s->hyperlinks);
1844
1845 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1846 tty_margin_pane(tty, ctx);
1847
1848 /*
1849 * If we want to wrap a pane while using margins, the cursor needs to
1850 * be exactly on the right of the region. If the cursor is entirely off
1851 * the edge - move it back to the right. Some terminals are funny about
1852 * this and insert extra spaces, so only use the right if margins are
1853 * enabled.
1854 */
1855 if (ctx->xoff + ctx->ocx > tty->rright) {
1856 if (!tty_use_margin(tty))
1857 tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
1858 else
1859 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1860 } else
1861 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1862
1863 tty_putc(tty, '\n');
1864 }
1865
1866 void
1867 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
1868 {
1869 struct client *c = tty->client;
1870 u_int i;
1871
1872 if (ctx->bigger ||
1873 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1874 tty_fake_bce(tty, &ctx->defaults, 8) ||
1875 !tty_term_has(tty->term, TTYC_CSR) ||
1876 ctx->sx == 1 ||
1877 ctx->sy == 1 ||
1878 c->overlay_check != NULL) {
1879 tty_redraw_region(tty, ctx);
1880 return;
1881 }
1882
1883 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1884 ctx->s->hyperlinks);
1885
1886 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1887 tty_margin_pane(tty, ctx);
1888
1889 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1890 if (!tty_use_margin(tty))
1891 tty_cursor(tty, 0, tty->rlower);
1892 else
1893 tty_cursor(tty, tty->rright, tty->rlower);
1894 for (i = 0; i < ctx->num; i++)
1895 tty_putc(tty, '\n');
1896 } else {
1897 if (tty->cy == UINT_MAX)
1898 tty_cursor(tty, 0, 0);
1899 else
1900 tty_cursor(tty, 0, tty->cy);
1901 tty_putcode1(tty, TTYC_INDN, ctx->num);
1902 }
1903 }
1904
1905 void
1906 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
1907 {
1908 u_int i;
1909 struct client *c = tty->client;
1910
1911 if (ctx->bigger ||
1912 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1913 tty_fake_bce(tty, &ctx->defaults, 8) ||
1914 !tty_term_has(tty->term, TTYC_CSR) ||
1915 (!tty_term_has(tty->term, TTYC_RI) &&
1916 !tty_term_has(tty->term, TTYC_RIN)) ||
1917 ctx->sx == 1 ||
1918 ctx->sy == 1 ||
1919 c->overlay_check != NULL) {
1920 tty_redraw_region(tty, ctx);
1921 return;
1922 }
1923
1924 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1925 ctx->s->hyperlinks);
1926
1927 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1928 tty_margin_pane(tty, ctx);
1929 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1930
1931 if (tty_term_has(tty->term, TTYC_RIN))
1932 tty_putcode1(tty, TTYC_RIN, ctx->num);
1933 else {
1934 for (i = 0; i < ctx->num; i++)
1935 tty_putcode(tty, TTYC_RI);
1936 }
1937 }
1938
1939 void
1940 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1941 {
1942 u_int px, py, nx, ny;
1943
1944 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1945 ctx->s->hyperlinks);
1946
1947 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1948 tty_margin_off(tty);
1949
1950 px = 0;
1951 nx = ctx->sx;
1952 py = ctx->ocy + 1;
1953 ny = ctx->sy - ctx->ocy - 1;
1954
1955 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1956
1957 px = ctx->ocx;
1958 nx = ctx->sx - ctx->ocx;
1959 py = ctx->ocy;
1960
1961 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1962 }
1963
1964 void
1965 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1966 {
1967 u_int px, py, nx, ny;
1968
1969 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1970 ctx->s->hyperlinks);
1971
1972 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1973 tty_margin_off(tty);
1974
1975 px = 0;
1976 nx = ctx->sx;
1977 py = 0;
1978 ny = ctx->ocy;
1979
1980 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1981
1982 px = 0;
1983 nx = ctx->ocx + 1;
1984 py = ctx->ocy;
1985
1986 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1987 }
1988
1989 void
1990 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1991 {
1992 u_int px, py, nx, ny;
1993
1994 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg,
1995 ctx->s->hyperlinks);
1996
1997 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
1998 tty_margin_off(tty);
1999
2000 px = 0;
2001 nx = ctx->sx;
2002 py = 0;
2003 ny = ctx->sy;
2004
2005 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
2006 }
2007
2008 void
2009 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
2010 {
2011 u_int i, j;
2012
2013 if (ctx->bigger) {
2014 ctx->redraw_cb(ctx);
2015 return;
2016 }
2017
2018 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette,
2019 ctx->s->hyperlinks);
2020
2021 tty_region_pane(tty, ctx, 0, ctx->sy - 1);
2022 tty_margin_off(tty);
2023
2024 for (j = 0; j < ctx->sy; j++) {
2025 tty_cursor_pane(tty, ctx, 0, j);
2026 for (i = 0; i < ctx->sx; i++)
2027 tty_putc(tty, 'E');
2028 }
2029 }
2030
2031 void
2032 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
2033 {
2034 const struct grid_cell *gcp = ctx->cell;
2035 struct screen *s = ctx->s;
2036 struct overlay_ranges r;
2037 u_int px, py, i, vis = 0;
2038
2039 px = ctx->xoff + ctx->ocx - ctx->wox;
2040 py = ctx->yoff + ctx->ocy - ctx->woy;
2041 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) ||
2042 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py)))
2043 return;
2044
2045 /* Handle partially obstructed wide characters. */
2046 if (gcp->data.width > 1) {
2047 tty_check_overlay_range(tty, px, py, gcp->data.width, &r);
2048 for (i = 0; i < OVERLAY_MAX_RANGES; i++)
2049 vis += r.nx[i];
2050 if (vis < gcp->data.width) {
2051 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width,
2052 px, py, &ctx->defaults, ctx->palette);
2053 return;
2054 }
2055 }
2056
2057 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 &&
2058 ctx->ocy == ctx->orlower &&
2059 tty_full_width(tty, ctx))
2060 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
2061
2062 tty_margin_off(tty);
2063 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2064
2065 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette,
2066 ctx->s->hyperlinks);
2067 }
2068
2069 void
2070 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
2071 {
2072 struct overlay_ranges r;
2073 u_int i, px, py, cx;
2074 char *cp = ctx->ptr;
2075
2076 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
2077 return;
2078
2079 if (ctx->bigger &&
2080 (ctx->xoff + ctx->ocx < ctx->wox ||
2081 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) {
2082 if (!ctx->wrapped ||
2083 !tty_full_width(tty, ctx) ||
2084 (tty->term->flags & TERM_NOAM) ||
2085 ctx->xoff + ctx->ocx != 0 ||
2086 ctx->yoff + ctx->ocy != tty->cy + 1 ||
2087 tty->cx < tty->sx ||
2088 tty->cy == tty->rlower)
2089 tty_draw_pane(tty, ctx, ctx->ocy);
2090 else
2091 ctx->redraw_cb(ctx);
2092 return;
2093 }
2094
2095 tty_margin_off(tty);
2096 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
2097 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks);
2098
2099 /* Get tty position from pane position for overlay check. */
2100 px = ctx->xoff + ctx->ocx - ctx->wox;
2101 py = ctx->yoff + ctx->ocy - ctx->woy;
2102
2103 tty_check_overlay_range(tty, px, py, ctx->num, &r);
2104 for (i = 0; i < OVERLAY_MAX_RANGES; i++) {
2105 if (r.nx[i] == 0)
2106 continue;
2107 /* Convert back to pane position for printing. */
2108 cx = r.px[i] - ctx->xoff + ctx->wox;
2109 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy);
2110 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]);
2111 }
2112 }
2113
2114 void
2115 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
2116 {
2117 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num);
2118 }
2119
2120 void
2121 tty_set_selection(struct tty *tty, const char *flags, const char *buf,
2122 size_t len)
2123 {
2124 char *encoded;
2125 size_t size;
2126
2127 if (~tty->flags & TTY_STARTED)
2128 return;
2129 if (!tty_term_has(tty->term, TTYC_MS))
2130 return;
2131
2132 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */
2133 encoded = xmalloc(size);
2134
2135 b64_ntop(buf, len, encoded, size);
2136 tty->flags |= TTY_NOBLOCK;
2137 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded);
2138
2139 free(encoded);
2140 }
2141
2142 void
2143 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
2144 {
2145 tty->flags |= TTY_NOBLOCK;
2146 tty_add(tty, ctx->ptr, ctx->num);
2147 tty_invalidate(tty);
2148 }
2149
2150 void
2151 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx)
2152 {
2153 if (ctx->num == 0x11) {
2154 /*
2155 * This is an overlay and a command that moves the cursor so
2156 * start synchronized updates.
2157 */
2158 tty_sync_start(tty);
2159 } else if (~ctx->num & 0x10) {
2160 /*
2161 * This is a pane. If there is an overlay, always start;
2162 * otherwise, only if requested.
2163 */
2164 if (ctx->num || tty->client->overlay_draw != NULL)
2165 tty_sync_start(tty);
2166 }
2167 }
2168
2169 void
2170 tty_cell(struct tty *tty, const struct grid_cell *gc,
2171 const struct grid_cell *defaults, struct colour_palette *palette,
2172 struct hyperlinks *hl)
2173 {
2174 const struct grid_cell *gcp;
2175
2176 /* Skip last character if terminal is stupid. */
2177 if ((tty->term->flags & TERM_NOAM) &&
2178 tty->cy == tty->sy - 1 &&
2179 tty->cx == tty->sx - 1)
2180 return;
2181
2182 /* If this is a padding character, do nothing. */
2183 if (gc->flags & GRID_FLAG_PADDING)
2184 return;
2185
2186 /* Check the output codeset and apply attributes. */
2187 gcp = tty_check_codeset(tty, gc);
2188 tty_attributes(tty, gcp, defaults, palette, hl);
2189
2190 /* If it is a single character, write with putc to handle ACS. */
2191 if (gcp->data.size == 1) {
2192 tty_attributes(tty, gcp, defaults, palette, hl);
2193 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
2194 return;
2195 tty_putc(tty, *gcp->data.data);
2196 return;
2197 }
2198
2199 /* Write the data. */
2200 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
2201 }
2202
2203 void
2204 tty_reset(struct tty *tty)
2205 {
2206 struct grid_cell *gc = &tty->cell;
2207
2208 if (!grid_cells_equal(gc, &grid_default_cell)) {
2209 if (gc->link != 0)
2210 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2211 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2212 tty_putcode(tty, TTYC_RMACS);
2213 tty_putcode(tty, TTYC_SGR0);
2214 memcpy(gc, &grid_default_cell, sizeof *gc);
2215 }
2216 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2217 }
2218
2219 static void
2220 tty_invalidate(struct tty *tty)
2221 {
2222 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
2223 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
2224
2225 tty->cx = tty->cy = UINT_MAX;
2226 tty->rupper = tty->rleft = UINT_MAX;
2227 tty->rlower = tty->rright = UINT_MAX;
2228
2229 if (tty->flags & TTY_STARTED) {
2230 if (tty_use_margin(tty))
2231 tty_putcode(tty, TTYC_ENMG);
2232 tty_putcode(tty, TTYC_SGR0);
2233
2234 tty->mode = ALL_MODES;
2235 tty_update_mode(tty, MODE_CURSOR, NULL);
2236
2237 tty_cursor(tty, 0, 0);
2238 tty_region_off(tty);
2239 tty_margin_off(tty);
2240 } else
2241 tty->mode = MODE_CURSOR;
2242 }
2243
2244 /* Turn off margin. */
2245 void
2246 tty_region_off(struct tty *tty)
2247 {
2248 tty_region(tty, 0, tty->sy - 1);
2249 }
2250
2251 /* Set region inside pane. */
2252 static void
2253 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
2254 u_int rlower)
2255 {
2256 tty_region(tty, ctx->yoff + rupper - ctx->woy,
2257 ctx->yoff + rlower - ctx->woy);
2258 }
2259
2260 /* Set region at absolute position. */
2261 static void
2262 tty_region(struct tty *tty, u_int rupper, u_int rlower)
2263 {
2264 if (tty->rlower == rlower && tty->rupper == rupper)
2265 return;
2266 if (!tty_term_has(tty->term, TTYC_CSR))
2267 return;
2268
2269 tty->rupper = rupper;
2270 tty->rlower = rlower;
2271
2272 /*
2273 * Some terminals (such as PuTTY) do not correctly reset the cursor to
2274 * 0,0 if it is beyond the last column (they do not reset their wrap
2275 * flag so further output causes a line feed). As a workaround, do an
2276 * explicit move to 0 first.
2277 */
2278 if (tty->cx >= tty->sx) {
2279 if (tty->cy == UINT_MAX)
2280 tty_cursor(tty, 0, 0);
2281 else
2282 tty_cursor(tty, 0, tty->cy);
2283 }
2284
2285 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2286 tty->cx = tty->cy = UINT_MAX;
2287 }
2288
2289 /* Turn off margin. */
2290 void
2291 tty_margin_off(struct tty *tty)
2292 {
2293 tty_margin(tty, 0, tty->sx - 1);
2294 }
2295
2296 /* Set margin inside pane. */
2297 static void
2298 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
2299 {
2300 tty_margin(tty, ctx->xoff - ctx->wox,
2301 ctx->xoff + ctx->sx - 1 - ctx->wox);
2302 }
2303
2304 /* Set margin at absolute position. */
2305 static void
2306 tty_margin(struct tty *tty, u_int rleft, u_int rright)
2307 {
2308 if (!tty_use_margin(tty))
2309 return;
2310 if (tty->rleft == rleft && tty->rright == rright)
2311 return;
2312
2313 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
2314
2315 tty->rleft = rleft;
2316 tty->rright = rright;
2317
2318 if (rleft == 0 && rright == tty->sx - 1)
2319 tty_putcode(tty, TTYC_CLMG);
2320 else
2321 tty_putcode2(tty, TTYC_CMG, rleft, rright);
2322 tty->cx = tty->cy = UINT_MAX;
2323 }
2324
2325 /*
2326 * Move the cursor, unless it would wrap itself when the next character is
2327 * printed.
2328 */
2329 static void
2330 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
2331 u_int cx, u_int cy)
2332 {
2333 if (!ctx->wrapped ||
2334 !tty_full_width(tty, ctx) ||
2335 (tty->term->flags & TERM_NOAM) ||
2336 ctx->xoff + cx != 0 ||
2337 ctx->yoff + cy != tty->cy + 1 ||
2338 tty->cx < tty->sx ||
2339 tty->cy == tty->rlower)
2340 tty_cursor_pane(tty, ctx, cx, cy);
2341 else
2342 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
2343 }
2344
2345 /* Move cursor inside pane. */
2346 static void
2347 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
2348 {
2349 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy);
2350 }
2351
2352 /* Move cursor to absolute position. */
2353 void
2354 tty_cursor(struct tty *tty, u_int cx, u_int cy)
2355 {
2356 struct tty_term *term = tty->term;
2357 u_int thisx, thisy;
2358 int change;
2359
2360 if (tty->flags & TTY_BLOCK)
2361 return;
2362
2363 thisx = tty->cx;
2364 thisy = tty->cy;
2365
2366 /*
2367 * If in the automargin space, and want to be there, do not move.
2368 * Otherwise, force the cursor to be in range (and complain).
2369 */
2370 if (cx == thisx && cy == thisy && cx == tty->sx)
2371 return;
2372 if (cx > tty->sx - 1) {
2373 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1);
2374 cx = tty->sx - 1;
2375 }
2376
2377 /* No change. */
2378 if (cx == thisx && cy == thisy)
2379 return;
2380
2381 /* Currently at the very end of the line - use absolute movement. */
2382 if (thisx > tty->sx - 1)
2383 goto absolute;
2384
2385 /* Move to home position (0, 0). */
2386 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
2387 tty_putcode(tty, TTYC_HOME);
2388 goto out;
2389 }
2390
2391 /* Zero on the next line. */
2392 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
2393 (!tty_use_margin(tty) || tty->rleft == 0)) {
2394 tty_putc(tty, '\r');
2395 tty_putc(tty, '\n');
2396 goto out;
2397 }
2398
2399 /* Moving column or row. */
2400 if (cy == thisy) {
2401 /*
2402 * Moving column only, row staying the same.
2403 */
2404
2405 /* To left edge. */
2406 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
2407 tty_putc(tty, '\r');
2408 goto out;
2409 }
2410
2411 /* One to the left. */
2412 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
2413 tty_putcode(tty, TTYC_CUB1);
2414 goto out;
2415 }
2416
2417 /* One to the right. */
2418 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
2419 tty_putcode(tty, TTYC_CUF1);
2420 goto out;
2421 }
2422
2423 /* Calculate difference. */
2424 change = thisx - cx; /* +ve left, -ve right */
2425
2426 /*
2427 * Use HPA if change is larger than absolute, otherwise move
2428 * the cursor with CUB/CUF.
2429 */
2430 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
2431 tty_putcode1(tty, TTYC_HPA, cx);
2432 goto out;
2433 } else if (change > 0 &&
2434 tty_term_has(term, TTYC_CUB) &&
2435 !tty_use_margin(tty)) {
2436 if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
2437 tty_putcode(tty, TTYC_CUB1);
2438 tty_putcode(tty, TTYC_CUB1);
2439 goto out;
2440 }
2441 tty_putcode1(tty, TTYC_CUB, change);
2442 goto out;
2443 } else if (change < 0 &&
2444 tty_term_has(term, TTYC_CUF) &&
2445 !tty_use_margin(tty)) {
2446 tty_putcode1(tty, TTYC_CUF, -change);
2447 goto out;
2448 }
2449 } else if (cx == thisx) {
2450 /*
2451 * Moving row only, column staying the same.
2452 */
2453
2454 /* One above. */
2455 if (thisy != tty->rupper &&
2456 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
2457 tty_putcode(tty, TTYC_CUU1);
2458 goto out;
2459 }
2460
2461 /* One below. */
2462 if (thisy != tty->rlower &&
2463 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
2464 tty_putcode(tty, TTYC_CUD1);
2465 goto out;
2466 }
2467
2468 /* Calculate difference. */
2469 change = thisy - cy; /* +ve up, -ve down */
2470
2471 /*
2472 * Try to use VPA if change is larger than absolute or if this
2473 * change would cross the scroll region, otherwise use CUU/CUD.
2474 */
2475 if ((u_int) abs(change) > cy ||
2476 (change < 0 && cy - change > tty->rlower) ||
2477 (change > 0 && cy - change < tty->rupper)) {
2478 if (tty_term_has(term, TTYC_VPA)) {
2479 tty_putcode1(tty, TTYC_VPA, cy);
2480 goto out;
2481 }
2482 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
2483 tty_putcode1(tty, TTYC_CUU, change);
2484 goto out;
2485 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
2486 tty_putcode1(tty, TTYC_CUD, -change);
2487 goto out;
2488 }
2489 }
2490
2491 absolute:
2492 /* Absolute movement. */
2493 tty_putcode2(tty, TTYC_CUP, cy, cx);
2494
2495 out:
2496 tty->cx = cx;
2497 tty->cy = cy;
2498 }
2499
2500 static void
2501 tty_hyperlink(struct tty *tty, const struct grid_cell *gc,
2502 struct hyperlinks *hl)
2503 {
2504 const char *uri, *id;
2505
2506 if (gc->link == tty->cell.link)
2507 return;
2508 tty->cell.link = gc->link;
2509
2510 if (hl == NULL)
2511 return;
2512
2513 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id))
2514 tty_putcode_ptr2(tty, TTYC_HLS, "", "");
2515 else
2516 tty_putcode_ptr2(tty, TTYC_HLS, id, uri);
2517 }
2518
2519 void
2520 tty_attributes(struct tty *tty, const struct grid_cell *gc,
2521 const struct grid_cell *defaults, struct colour_palette *palette,
2522 struct hyperlinks *hl)
2523 {
2524 struct grid_cell *tc = &tty->cell, gc2;
2525 int changed;
2526
2527 /* Copy cell and update default colours. */
2528 memcpy(&gc2, gc, sizeof gc2);
2529 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2530 if (gc2.fg == 8)
2531 gc2.fg = defaults->fg;
2532 if (gc2.bg == 8)
2533 gc2.bg = defaults->bg;
2534 }
2535
2536 /* Ignore cell if it is the same as the last one. */
2537 if (gc2.attr == tty->last_cell.attr &&
2538 gc2.fg == tty->last_cell.fg &&
2539 gc2.bg == tty->last_cell.bg &&
2540 gc2.us == tty->last_cell.us &&
2541 gc2.link == tty->last_cell.link)
2542 return;
2543
2544 /*
2545 * If no setab, try to use the reverse attribute as a best-effort for a
2546 * non-default background. This is a bit of a hack but it doesn't do
2547 * any serious harm and makes a couple of applications happier.
2548 */
2549 if (!tty_term_has(tty->term, TTYC_SETAB)) {
2550 if (gc2.attr & GRID_ATTR_REVERSE) {
2551 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
2552 gc2.attr &= ~GRID_ATTR_REVERSE;
2553 } else {
2554 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
2555 gc2.attr |= GRID_ATTR_REVERSE;
2556 }
2557 }
2558
2559 /* Fix up the colours if necessary. */
2560 tty_check_fg(tty, palette, &gc2);
2561 tty_check_bg(tty, palette, &gc2);
2562 tty_check_us(tty, palette, &gc2);
2563
2564 /*
2565 * If any bits are being cleared or the underline colour is now default,
2566 * reset everything.
2567 */
2568 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
2569 tty_reset(tty);
2570
2571 /*
2572 * Set the colours. This may call tty_reset() (so it comes next) and
2573 * may add to (NOT remove) the desired attributes.
2574 */
2575 tty_colours(tty, &gc2);
2576
2577 /* Filter out attribute bits already set. */
2578 changed = gc2.attr & ~tc->attr;
2579 tc->attr = gc2.attr;
2580
2581 /* Set the attributes. */
2582 if (changed & GRID_ATTR_BRIGHT)
2583 tty_putcode(tty, TTYC_BOLD);
2584 if (changed & GRID_ATTR_DIM)
2585 tty_putcode(tty, TTYC_DIM);
2586 if (changed & GRID_ATTR_ITALICS)
2587 tty_set_italics(tty);
2588 if (changed & GRID_ATTR_ALL_UNDERSCORE) {
2589 if ((changed & GRID_ATTR_UNDERSCORE) ||
2590 !tty_term_has(tty->term, TTYC_SMULX))
2591 tty_putcode(tty, TTYC_SMUL);
2592 else if (changed & GRID_ATTR_UNDERSCORE_2)
2593 tty_putcode1(tty, TTYC_SMULX, 2);
2594 else if (changed & GRID_ATTR_UNDERSCORE_3)
2595 tty_putcode1(tty, TTYC_SMULX, 3);
2596 else if (changed & GRID_ATTR_UNDERSCORE_4)
2597 tty_putcode1(tty, TTYC_SMULX, 4);
2598 else if (changed & GRID_ATTR_UNDERSCORE_5)
2599 tty_putcode1(tty, TTYC_SMULX, 5);
2600 }
2601 if (changed & GRID_ATTR_BLINK)
2602 tty_putcode(tty, TTYC_BLINK);
2603 if (changed & GRID_ATTR_REVERSE) {
2604 if (tty_term_has(tty->term, TTYC_REV))
2605 tty_putcode(tty, TTYC_REV);
2606 else if (tty_term_has(tty->term, TTYC_SMSO))
2607 tty_putcode(tty, TTYC_SMSO);
2608 }
2609 if (changed & GRID_ATTR_HIDDEN)
2610 tty_putcode(tty, TTYC_INVIS);
2611 if (changed & GRID_ATTR_STRIKETHROUGH)
2612 tty_putcode(tty, TTYC_SMXX);
2613 if (changed & GRID_ATTR_OVERLINE)
2614 tty_putcode(tty, TTYC_SMOL);
2615 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
2616 tty_putcode(tty, TTYC_SMACS);
2617
2618 /* Set hyperlink if any. */
2619 tty_hyperlink(tty, gc, hl);
2620
2621 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell);
2622 }
2623
2624 static void
2625 tty_colours(struct tty *tty, const struct grid_cell *gc)
2626 {
2627 struct grid_cell *tc = &tty->cell;
2628 int have_ax;
2629
2630 /* No changes? Nothing is necessary. */
2631 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
2632 return;
2633
2634 /*
2635 * Is either the default colour? This is handled specially because the
2636 * best solution might be to reset both colours to default, in which
2637 * case if only one is default need to fall onward to set the other
2638 * colour.
2639 */
2640 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
2641 /*
2642 * If don't have AX but do have op, send sgr0 (op can't
2643 * actually be used because it is sometimes the same as sgr0
2644 * and sometimes isn't). This resets both colours to default.
2645 *
2646 * Otherwise, try to set the default colour only as needed.
2647 */
2648 have_ax = tty_term_flag(tty->term, TTYC_AX);
2649 if (!have_ax && tty_term_has(tty->term, TTYC_OP))
2650 tty_reset(tty);
2651 else {
2652 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
2653 if (have_ax)
2654 tty_puts(tty, "\033[39m");
2655 else if (tc->fg != 7)
2656 tty_putcode1(tty, TTYC_SETAF, 7);
2657 tc->fg = gc->fg;
2658 }
2659 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
2660 if (have_ax)
2661 tty_puts(tty, "\033[49m");
2662 else if (tc->bg != 0)
2663 tty_putcode1(tty, TTYC_SETAB, 0);
2664 tc->bg = gc->bg;
2665 }
2666 }
2667 }
2668
2669 /* Set the foreground colour. */
2670 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
2671 tty_colours_fg(tty, gc);
2672
2673 /*
2674 * Set the background colour. This must come after the foreground as
2675 * tty_colour_fg() can call tty_reset().
2676 */
2677 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
2678 tty_colours_bg(tty, gc);
2679
2680 /* Set the underscore colour. */
2681 if (gc->us != tc->us)
2682 tty_colours_us(tty, gc);
2683 }
2684
2685 static void
2686 tty_check_fg(struct tty *tty, struct colour_palette *palette,
2687 struct grid_cell *gc)
2688 {
2689 u_char r, g, b;
2690 u_int colours;
2691 int c;
2692
2693 /*
2694 * Perform substitution if this pane has a palette. If the bright
2695 * attribute is set and Nobr is not present, use the bright entry in
2696 * the palette by changing to the aixterm colour
2697 */
2698 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2699 c = gc->fg;
2700 if (c < 8 &&
2701 gc->attr & GRID_ATTR_BRIGHT &&
2702 !tty_term_has(tty->term, TTYC_NOBR))
2703 c += 90;
2704 if ((c = colour_palette_get(palette, c)) != -1)
2705 gc->fg = c;
2706 }
2707
2708 /* Is this a 24-bit colour? */
2709 if (gc->fg & COLOUR_FLAG_RGB) {
2710 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2711 if (tty->term->flags & TERM_RGBCOLOURS)
2712 return;
2713 colour_split_rgb(gc->fg, &r, &g, &b);
2714 gc->fg = colour_find_rgb(r, g, b);
2715 }
2716
2717 /* How many colours does this terminal have? */
2718 if (tty->term->flags & TERM_256COLOURS)
2719 colours = 256;
2720 else
2721 colours = tty_term_number(tty->term, TTYC_COLORS);
2722
2723 /* Is this a 256-colour colour? */
2724 if (gc->fg & COLOUR_FLAG_256) {
2725 /* And not a 256 colour mode? */
2726 if (colours < 256) {
2727 gc->fg = colour_256to16(gc->fg);
2728 if (gc->fg & 8) {
2729 gc->fg &= 7;
2730 if (colours >= 16)
2731 gc->fg += 90;
2732 }
2733 }
2734 return;
2735 }
2736
2737 /* Is this an aixterm colour? */
2738 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
2739 gc->fg -= 90;
2740 gc->attr |= GRID_ATTR_BRIGHT;
2741 }
2742 }
2743
2744 static void
2745 tty_check_bg(struct tty *tty, struct colour_palette *palette,
2746 struct grid_cell *gc)
2747 {
2748 u_char r, g, b;
2749 u_int colours;
2750 int c;
2751
2752 /* Perform substitution if this pane has a palette. */
2753 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2754 if ((c = colour_palette_get(palette, gc->bg)) != -1)
2755 gc->bg = c;
2756 }
2757
2758 /* Is this a 24-bit colour? */
2759 if (gc->bg & COLOUR_FLAG_RGB) {
2760 /* Not a 24-bit terminal? Translate to 256-colour palette. */
2761 if (tty->term->flags & TERM_RGBCOLOURS)
2762 return;
2763 colour_split_rgb(gc->bg, &r, &g, &b);
2764 gc->bg = colour_find_rgb(r, g, b);
2765 }
2766
2767 /* How many colours does this terminal have? */
2768 if (tty->term->flags & TERM_256COLOURS)
2769 colours = 256;
2770 else
2771 colours = tty_term_number(tty->term, TTYC_COLORS);
2772
2773 /* Is this a 256-colour colour? */
2774 if (gc->bg & COLOUR_FLAG_256) {
2775 /*
2776 * And not a 256 colour mode? Translate to 16-colour
2777 * palette. Bold background doesn't exist portably, so just
2778 * discard the bold bit if set.
2779 */
2780 if (colours < 256) {
2781 gc->bg = colour_256to16(gc->bg);
2782 if (gc->bg & 8) {
2783 gc->bg &= 7;
2784 if (colours >= 16)
2785 gc->bg += 90;
2786 }
2787 }
2788 return;
2789 }
2790
2791 /* Is this an aixterm colour? */
2792 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
2793 gc->bg -= 90;
2794 }
2795
2796 static void
2797 tty_check_us(__unused struct tty *tty, struct colour_palette *palette,
2798 struct grid_cell *gc)
2799 {
2800 int c;
2801
2802 /* Perform substitution if this pane has a palette. */
2803 if (~gc->flags & GRID_FLAG_NOPALETTE) {
2804 if ((c = colour_palette_get(palette, gc->us)) != -1)
2805 gc->us = c;
2806 }
2807
2808 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
2809 if (gc->us & COLOUR_FLAG_256)
2810 gc->us = colour_256toRGB (gc->us);
2811 }
2812
2813 static void
2814 tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
2815 {
2816 struct grid_cell *tc = &tty->cell;
2817 char s[32];
2818
2819 /* Is this a 24-bit or 256-colour colour? */
2820 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
2821 if (tty_try_colour(tty, gc->fg, "38") == 0)
2822 goto save;
2823 /* Should not get here, already converted in tty_check_fg. */
2824 return;
2825 }
2826
2827 /* Is this an aixterm bright colour? */
2828 if (gc->fg >= 90 && gc->fg <= 97) {
2829 if (tty->term->flags & TERM_256COLOURS) {
2830 xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
2831 tty_puts(tty, s);
2832 } else
2833 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
2834 goto save;
2835 }
2836
2837 /* Otherwise set the foreground colour. */
2838 tty_putcode1(tty, TTYC_SETAF, gc->fg);
2839
2840 save:
2841 /* Save the new values in the terminal current cell. */
2842 tc->fg = gc->fg;
2843 }
2844
2845 static void
2846 tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
2847 {
2848 struct grid_cell *tc = &tty->cell;
2849 char s[32];
2850
2851 /* Is this a 24-bit or 256-colour colour? */
2852 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
2853 if (tty_try_colour(tty, gc->bg, "48") == 0)
2854 goto save;
2855 /* Should not get here, already converted in tty_check_bg. */
2856 return;
2857 }
2858
2859 /* Is this an aixterm bright colour? */
2860 if (gc->bg >= 90 && gc->bg <= 97) {
2861 if (tty->term->flags & TERM_256COLOURS) {
2862 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
2863 tty_puts(tty, s);
2864 } else
2865 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
2866 goto save;
2867 }
2868
2869 /* Otherwise set the background colour. */
2870 tty_putcode1(tty, TTYC_SETAB, gc->bg);
2871
2872 save:
2873 /* Save the new values in the terminal current cell. */
2874 tc->bg = gc->bg;
2875 }
2876
2877 static void
2878 tty_colours_us(struct tty *tty, const struct grid_cell *gc)
2879 {
2880 struct grid_cell *tc = &tty->cell;
2881 u_int c;
2882 u_char r, g, b;
2883
2884 /* Clear underline colour. */
2885 if (gc->us == 0) {
2886 tty_putcode(tty, TTYC_OL);
2887 goto save;
2888 }
2889
2890 /* Must be an RGB colour - this should never happen. */
2891 if (~gc->us & COLOUR_FLAG_RGB)
2892 return;
2893
2894 /*
2895 * Setulc and setal follows the ncurses(3) one argument "direct colour"
2896 * capability format. Calculate the colour value.
2897 */
2898 colour_split_rgb(gc->us, &r, &g, &b);
2899 c = (65536 * r) + (256 * g) + b;
2900
2901 /*
2902 * Write the colour. Only use setal if the RGB flag is set because the
2903 * non-RGB version may be wrong.
2904 */
2905 if (tty_term_has(tty->term, TTYC_SETULC))
2906 tty_putcode1(tty, TTYC_SETULC, c);
2907 else if (tty_term_has(tty->term, TTYC_SETAL) &&
2908 tty_term_has(tty->term, TTYC_RGB))
2909 tty_putcode1(tty, TTYC_SETAL, c);
2910
2911 save:
2912 /* Save the new values in the terminal current cell. */
2913 tc->us = gc->us;
2914 }
2915
2916 static int
2917 tty_try_colour(struct tty *tty, int colour, const char *type)
2918 {
2919 u_char r, g, b;
2920
2921 if (colour & COLOUR_FLAG_256) {
2922 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
2923 tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
2924 else if (tty_term_has(tty->term, TTYC_SETAB))
2925 tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
2926 return (0);
2927 }
2928
2929 if (colour & COLOUR_FLAG_RGB) {
2930 colour_split_rgb(colour & 0xffffff, &r, &g, &b);
2931 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
2932 tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
2933 else if (tty_term_has(tty->term, TTYC_SETRGBB))
2934 tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
2935 return (0);
2936 }
2937
2938 return (-1);
2939 }
2940
2941 static void
2942 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp)
2943 {
2944 memcpy(gc, &grid_default_cell, sizeof *gc);
2945 gc->fg = wp->palette.fg;
2946 gc->bg = wp->palette.bg;
2947 }
2948
2949 void
2950 tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
2951 {
2952 struct options *oo = wp->options;
2953 struct format_tree *ft;
2954
2955 memcpy(gc, &grid_default_cell, sizeof *gc);
2956
2957 if (wp->flags & PANE_STYLECHANGED) {
2958 log_debug("%%%u: style changed", wp->id);
2959 wp->flags &= ~PANE_STYLECHANGED;
2960
2961 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id,
2962 FORMAT_NOJOBS);
2963 format_defaults(ft, NULL, NULL, NULL, wp);
2964 tty_window_default_style(&wp->cached_active_gc, wp);
2965 style_add(&wp->cached_active_gc, oo, "window-active-style", ft);
2966 tty_window_default_style(&wp->cached_gc, wp);
2967 style_add(&wp->cached_gc, oo, "window-style", ft);
2968 format_free(ft);
2969 }
2970
2971 if (gc->fg == 8) {
2972 if (wp == wp->window->active && wp->cached_active_gc.fg != 8)
2973 gc->fg = wp->cached_active_gc.fg;
2974 else
2975 gc->fg = wp->cached_gc.fg;
2976 }
2977
2978 if (gc->bg == 8) {
2979 if (wp == wp->window->active && wp->cached_active_gc.bg != 8)
2980 gc->bg = wp->cached_active_gc.bg;
2981 else
2982 gc->bg = wp->cached_gc.bg;
2983 }
2984 }
2985
2986 static void
2987 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults,
2988 struct colour_palette *palette, u_int bg, struct hyperlinks *hl)
2989 {
2990 struct grid_cell gc;
2991
2992 memcpy(&gc, &grid_default_cell, sizeof gc);
2993 gc.bg = bg;
2994 tty_attributes(tty, &gc, defaults, palette, hl);
2995 }
2996
2997 static void
2998 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data)
2999 {
3000 struct tty *tty = data;
3001 struct client *c = tty->client;
3002
3003 c->flags &= ~CLIENT_CLIPBOARDBUFFER;
3004 free(c->clipboard_panes);
3005 c->clipboard_panes = NULL;
3006 c->clipboard_npanes = 0;
3007
3008 tty->flags &= ~TTY_OSC52QUERY;
3009 }
3010
3011 void
3012 tty_clipboard_query(struct tty *tty)
3013 {
3014 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
3015
3016 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY))
3017 return;
3018 tty_putcode_ptr2(tty, TTYC_MS, "", "?");
3019
3020 tty->flags |= TTY_OSC52QUERY;
3021 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty);
3022 evtimer_add(&tty->clipboard_timer, &tv);
3023 }
tmux -- terminal multiplexer similar to GNU Screen