1 /* $OpenBSD: tty.c,v 1.405 2021/10/06 10:33:12 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/ioctl.h> 21 22 #include <netinet/in.h> 23 24 #include <curses.h> 25 #include <errno.h> 26 #include <fcntl.h> 27 #include <resolv.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <termios.h> 31 #include <unistd.h> 32 33 #include "tmux.h" 34 35 static int tty_log_fd = -1; 36 37 static int tty_client_ready(struct client *); 38 39 static void tty_set_italics(struct tty *); 40 static int tty_try_colour(struct tty *, int, const char *); 41 static void tty_force_cursor_colour(struct tty *, const char *); 42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 43 u_int); 44 static void tty_cursor_pane_unless_wrap(struct tty *, 45 const struct tty_ctx *, u_int, u_int); 46 static void tty_invalidate(struct tty *); 47 static void tty_colours(struct tty *, const struct grid_cell *); 48 static void tty_check_fg(struct tty *, struct colour_palette *, 49 struct grid_cell *); 50 static void tty_check_bg(struct tty *, struct colour_palette *, 51 struct grid_cell *); 52 static void tty_check_us(struct tty *, struct colour_palette *, 53 struct grid_cell *); 54 static void tty_colours_fg(struct tty *, const struct grid_cell *); 55 static void tty_colours_bg(struct tty *, const struct grid_cell *); 56 static void tty_colours_us(struct tty *, const struct grid_cell *); 57 58 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 59 u_int); 60 static void tty_region(struct tty *, u_int, u_int); 61 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 62 static void tty_margin(struct tty *, u_int, u_int); 63 static int tty_large_region(struct tty *, const struct tty_ctx *); 64 static int tty_fake_bce(const struct tty *, const struct grid_cell *, 65 u_int); 66 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 67 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 68 enum tty_code_code, u_int); 69 static void tty_repeat_space(struct tty *, u_int); 70 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 71 static void tty_default_attributes(struct tty *, const struct grid_cell *, 72 struct colour_palette *, u_int); 73 static int tty_check_overlay(struct tty *, u_int, u_int); 74 75 #define tty_use_margin(tty) \ 76 (tty->term->flags & TERM_DECSLRM) 77 #define tty_full_width(tty, ctx) \ 78 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 79 80 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 81 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 82 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 83 84 void 85 tty_create_log(void) 86 { 87 char name[64]; 88 89 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 90 91 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 92 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 93 fatal("fcntl failed"); 94 } 95 96 int 97 tty_init(struct tty *tty, struct client *c) 98 { 99 if (!isatty(c->fd)) 100 return (-1); 101 102 memset(tty, 0, sizeof *tty); 103 tty->client = c; 104 105 tty->cstyle = SCREEN_CURSOR_DEFAULT; 106 tty->ccolour = xstrdup(""); 107 108 if (tcgetattr(c->fd, &tty->tio) != 0) 109 return (-1); 110 return (0); 111 } 112 113 void 114 tty_resize(struct tty *tty) 115 { 116 struct client *c = tty->client; 117 struct winsize ws; 118 u_int sx, sy, xpixel, ypixel; 119 120 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 121 sx = ws.ws_col; 122 if (sx == 0) { 123 sx = 80; 124 xpixel = 0; 125 } else 126 xpixel = ws.ws_xpixel / sx; 127 sy = ws.ws_row; 128 if (sy == 0) { 129 sy = 24; 130 ypixel = 0; 131 } else 132 ypixel = ws.ws_ypixel / sy; 133 } else { 134 sx = 80; 135 sy = 24; 136 xpixel = 0; 137 ypixel = 0; 138 } 139 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 140 xpixel, ypixel); 141 tty_set_size(tty, sx, sy, xpixel, ypixel); 142 tty_invalidate(tty); 143 } 144 145 void 146 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 147 { 148 tty->sx = sx; 149 tty->sy = sy; 150 tty->xpixel = xpixel; 151 tty->ypixel = ypixel; 152 } 153 154 static void 155 tty_read_callback(__unused int fd, __unused short events, void *data) 156 { 157 struct tty *tty = data; 158 struct client *c = tty->client; 159 const char *name = c->name; 160 size_t size = EVBUFFER_LENGTH(tty->in); 161 int nread; 162 163 nread = evbuffer_read(tty->in, c->fd, -1); 164 if (nread == 0 || nread == -1) { 165 if (nread == 0) 166 log_debug("%s: read closed", name); 167 else 168 log_debug("%s: read error: %s", name, strerror(errno)); 169 event_del(&tty->event_in); 170 server_client_lost(tty->client); 171 return; 172 } 173 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 174 175 while (tty_keys_next(tty)) 176 ; 177 } 178 179 static void 180 tty_timer_callback(__unused int fd, __unused short events, void *data) 181 { 182 struct tty *tty = data; 183 struct client *c = tty->client; 184 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 185 186 log_debug("%s: %zu discarded", c->name, tty->discarded); 187 188 c->flags |= CLIENT_ALLREDRAWFLAGS; 189 c->discarded += tty->discarded; 190 191 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 192 tty->flags &= ~TTY_BLOCK; 193 tty_invalidate(tty); 194 return; 195 } 196 tty->discarded = 0; 197 evtimer_add(&tty->timer, &tv); 198 } 199 200 static int 201 tty_block_maybe(struct tty *tty) 202 { 203 struct client *c = tty->client; 204 size_t size = EVBUFFER_LENGTH(tty->out); 205 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 206 207 if (size < TTY_BLOCK_START(tty)) 208 return (0); 209 210 if (tty->flags & TTY_BLOCK) 211 return (1); 212 tty->flags |= TTY_BLOCK; 213 214 log_debug("%s: can't keep up, %zu discarded", c->name, size); 215 216 evbuffer_drain(tty->out, size); 217 c->discarded += size; 218 219 tty->discarded = 0; 220 evtimer_add(&tty->timer, &tv); 221 return (1); 222 } 223 224 static void 225 tty_write_callback(__unused int fd, __unused short events, void *data) 226 { 227 struct tty *tty = data; 228 struct client *c = tty->client; 229 size_t size = EVBUFFER_LENGTH(tty->out); 230 int nwrite; 231 232 nwrite = evbuffer_write(tty->out, c->fd); 233 if (nwrite == -1) 234 return; 235 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 236 237 if (c->redraw > 0) { 238 if ((size_t)nwrite >= c->redraw) 239 c->redraw = 0; 240 else 241 c->redraw -= nwrite; 242 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 243 c->redraw); 244 } else if (tty_block_maybe(tty)) 245 return; 246 247 if (EVBUFFER_LENGTH(tty->out) != 0) 248 event_add(&tty->event_out, NULL); 249 } 250 251 int 252 tty_open(struct tty *tty, char **cause) 253 { 254 struct client *c = tty->client; 255 256 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 257 c->term_ncaps, &c->term_features, cause); 258 if (tty->term == NULL) { 259 tty_close(tty); 260 return (-1); 261 } 262 tty->flags |= TTY_OPENED; 263 264 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 265 266 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 267 tty_read_callback, tty); 268 tty->in = evbuffer_new(); 269 if (tty->in == NULL) 270 fatal("out of memory"); 271 272 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 273 tty->out = evbuffer_new(); 274 if (tty->out == NULL) 275 fatal("out of memory"); 276 277 evtimer_set(&tty->timer, tty_timer_callback, tty); 278 279 tty_start_tty(tty); 280 281 tty_keys_build(tty); 282 283 return (0); 284 } 285 286 static void 287 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 288 { 289 struct tty *tty = data; 290 struct client *c = tty->client; 291 292 log_debug("%s: start timer fired", c->name); 293 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEXDA)) == 0) 294 tty_update_features(tty); 295 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA); 296 } 297 298 void 299 tty_start_tty(struct tty *tty) 300 { 301 struct client *c = tty->client; 302 struct termios tio; 303 struct timeval tv = { .tv_sec = 1 }; 304 305 setblocking(c->fd, 0); 306 event_add(&tty->event_in, NULL); 307 308 memcpy(&tio, &tty->tio, sizeof tio); 309 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 310 tio.c_iflag |= IGNBRK; 311 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 312 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 313 ECHOKE|ISIG); 314 tio.c_cc[VMIN] = 1; 315 tio.c_cc[VTIME] = 0; 316 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 317 tcflush(c->fd, TCOFLUSH); 318 319 tty_putcode(tty, TTYC_SMCUP); 320 321 tty_putcode(tty, TTYC_SMKX); 322 tty_putcode(tty, TTYC_CLEAR); 323 324 if (tty_acs_needed(tty)) { 325 log_debug("%s: using capabilities for ACS", c->name); 326 tty_putcode(tty, TTYC_ENACS); 327 } else 328 log_debug("%s: using UTF-8 for ACS", c->name); 329 330 tty_putcode(tty, TTYC_CNORM); 331 if (tty_term_has(tty->term, TTYC_KMOUS)) { 332 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 333 tty_puts(tty, "\033[?1006l\033[?1005l"); 334 } 335 336 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 337 evtimer_add(&tty->start_timer, &tv); 338 339 tty->flags |= TTY_STARTED; 340 tty_invalidate(tty); 341 342 if (*tty->ccolour != '\0') 343 tty_force_cursor_colour(tty, ""); 344 345 tty->mouse_drag_flag = 0; 346 tty->mouse_drag_update = NULL; 347 tty->mouse_drag_release = NULL; 348 } 349 350 void 351 tty_send_requests(struct tty *tty) 352 { 353 if (~tty->flags & TTY_STARTED) 354 return; 355 356 if (tty->term->flags & TERM_VT100LIKE) { 357 if (~tty->flags & TTY_HAVEDA) 358 tty_puts(tty, "\033[>c"); 359 if (~tty->flags & TTY_HAVEXDA) 360 tty_puts(tty, "\033[>q"); 361 } else 362 tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA); 363 } 364 365 void 366 tty_stop_tty(struct tty *tty) 367 { 368 struct client *c = tty->client; 369 struct winsize ws; 370 371 if (!(tty->flags & TTY_STARTED)) 372 return; 373 tty->flags &= ~TTY_STARTED; 374 375 evtimer_del(&tty->start_timer); 376 377 event_del(&tty->timer); 378 tty->flags &= ~TTY_BLOCK; 379 380 event_del(&tty->event_in); 381 event_del(&tty->event_out); 382 383 /* 384 * Be flexible about error handling and try not kill the server just 385 * because the fd is invalid. Things like ssh -t can easily leave us 386 * with a dead tty. 387 */ 388 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 389 return; 390 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 391 return; 392 393 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 394 if (tty_acs_needed(tty)) 395 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 396 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 397 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 398 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 399 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 400 if (tty_term_has(tty->term, TTYC_SE)) 401 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 402 else if (tty_term_has(tty->term, TTYC_SS)) 403 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0)); 404 } 405 if (tty->mode & MODE_BRACKETPASTE) 406 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 407 if (*tty->ccolour != '\0') 408 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 409 410 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 411 if (tty_term_has(tty->term, TTYC_KMOUS)) { 412 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 413 tty_raw(tty, "\033[?1006l\033[?1005l"); 414 } 415 416 if (tty->term->flags & TERM_VT100LIKE) 417 tty_raw(tty, "\033[?7727l"); 418 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 419 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 420 421 if (tty_use_margin(tty)) 422 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 423 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 424 425 setblocking(c->fd, 1); 426 } 427 428 void 429 tty_close(struct tty *tty) 430 { 431 if (event_initialized(&tty->key_timer)) 432 evtimer_del(&tty->key_timer); 433 tty_stop_tty(tty); 434 435 if (tty->flags & TTY_OPENED) { 436 evbuffer_free(tty->in); 437 event_del(&tty->event_in); 438 evbuffer_free(tty->out); 439 event_del(&tty->event_out); 440 441 tty_term_free(tty->term); 442 tty_keys_free(tty); 443 444 tty->flags &= ~TTY_OPENED; 445 } 446 } 447 448 void 449 tty_free(struct tty *tty) 450 { 451 tty_close(tty); 452 free(tty->ccolour); 453 } 454 455 void 456 tty_update_features(struct tty *tty) 457 { 458 struct client *c = tty->client; 459 460 if (tty_apply_features(tty->term, c->term_features)) 461 tty_term_apply_overrides(tty->term); 462 463 if (tty_use_margin(tty)) 464 tty_putcode(tty, TTYC_ENMG); 465 if (options_get_number(global_options, "extended-keys")) 466 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 467 if (options_get_number(global_options, "focus-events")) 468 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 469 if (tty->term->flags & TERM_VT100LIKE) 470 tty_puts(tty, "\033[?7727h"); 471 } 472 473 void 474 tty_raw(struct tty *tty, const char *s) 475 { 476 struct client *c = tty->client; 477 ssize_t n, slen; 478 u_int i; 479 480 slen = strlen(s); 481 for (i = 0; i < 5; i++) { 482 n = write(c->fd, s, slen); 483 if (n >= 0) { 484 s += n; 485 slen -= n; 486 if (slen == 0) 487 break; 488 } else if (n == -1 && errno != EAGAIN) 489 break; 490 usleep(100); 491 } 492 } 493 494 void 495 tty_putcode(struct tty *tty, enum tty_code_code code) 496 { 497 tty_puts(tty, tty_term_string(tty->term, code)); 498 } 499 500 void 501 tty_putcode1(struct tty *tty, enum tty_code_code code, int a) 502 { 503 if (a < 0) 504 return; 505 tty_puts(tty, tty_term_string1(tty->term, code, a)); 506 } 507 508 void 509 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) 510 { 511 if (a < 0 || b < 0) 512 return; 513 tty_puts(tty, tty_term_string2(tty->term, code, a, b)); 514 } 515 516 void 517 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c) 518 { 519 if (a < 0 || b < 0 || c < 0) 520 return; 521 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c)); 522 } 523 524 void 525 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a) 526 { 527 if (a != NULL) 528 tty_puts(tty, tty_term_ptr1(tty->term, code, a)); 529 } 530 531 void 532 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, 533 const void *b) 534 { 535 if (a != NULL && b != NULL) 536 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b)); 537 } 538 539 static void 540 tty_add(struct tty *tty, const char *buf, size_t len) 541 { 542 struct client *c = tty->client; 543 544 if (tty->flags & TTY_BLOCK) { 545 tty->discarded += len; 546 return; 547 } 548 549 evbuffer_add(tty->out, buf, len); 550 log_debug("%s: %.*s", c->name, (int)len, buf); 551 c->written += len; 552 553 if (tty_log_fd != -1) 554 write(tty_log_fd, buf, len); 555 if (tty->flags & TTY_STARTED) 556 event_add(&tty->event_out, NULL); 557 } 558 559 void 560 tty_puts(struct tty *tty, const char *s) 561 { 562 if (*s != '\0') 563 tty_add(tty, s, strlen(s)); 564 } 565 566 void 567 tty_putc(struct tty *tty, u_char ch) 568 { 569 const char *acs; 570 571 if ((tty->term->flags & TERM_NOAM) && 572 ch >= 0x20 && ch != 0x7f && 573 tty->cy == tty->sy - 1 && 574 tty->cx + 1 >= tty->sx) 575 return; 576 577 if (tty->cell.attr & GRID_ATTR_CHARSET) { 578 acs = tty_acs_get(tty, ch); 579 if (acs != NULL) 580 tty_add(tty, acs, strlen(acs)); 581 else 582 tty_add(tty, &ch, 1); 583 } else 584 tty_add(tty, &ch, 1); 585 586 if (ch >= 0x20 && ch != 0x7f) { 587 if (tty->cx >= tty->sx) { 588 tty->cx = 1; 589 if (tty->cy != tty->rlower) 590 tty->cy++; 591 592 /* 593 * On !am terminals, force the cursor position to where 594 * we think it should be after a line wrap - this means 595 * it works on sensible terminals as well. 596 */ 597 if (tty->term->flags & TERM_NOAM) 598 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); 599 } else 600 tty->cx++; 601 } 602 } 603 604 void 605 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 606 { 607 if ((tty->term->flags & TERM_NOAM) && 608 tty->cy == tty->sy - 1 && 609 tty->cx + len >= tty->sx) 610 len = tty->sx - tty->cx - 1; 611 612 tty_add(tty, buf, len); 613 if (tty->cx + width > tty->sx) { 614 tty->cx = (tty->cx + width) - tty->sx; 615 if (tty->cx <= tty->sx) 616 tty->cy++; 617 else 618 tty->cx = tty->cy = UINT_MAX; 619 } else 620 tty->cx += width; 621 } 622 623 static void 624 tty_set_italics(struct tty *tty) 625 { 626 const char *s; 627 628 if (tty_term_has(tty->term, TTYC_SITM)) { 629 s = options_get_string(global_options, "default-terminal"); 630 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 631 tty_putcode(tty, TTYC_SITM); 632 return; 633 } 634 } 635 tty_putcode(tty, TTYC_SMSO); 636 } 637 638 void 639 tty_set_title(struct tty *tty, const char *title) 640 { 641 if (!tty_term_has(tty->term, TTYC_TSL) || 642 !tty_term_has(tty->term, TTYC_FSL)) 643 return; 644 645 tty_putcode(tty, TTYC_TSL); 646 tty_puts(tty, title); 647 tty_putcode(tty, TTYC_FSL); 648 } 649 650 static void 651 tty_force_cursor_colour(struct tty *tty, const char *ccolour) 652 { 653 if (*ccolour == '\0') 654 tty_putcode(tty, TTYC_CR); 655 else 656 tty_putcode_ptr1(tty, TTYC_CS, ccolour); 657 free(tty->ccolour); 658 tty->ccolour = xstrdup(ccolour); 659 } 660 661 static void 662 tty_update_cursor(struct tty *tty, int mode, int changed, struct screen *s) 663 { 664 enum screen_cursor_style cstyle; 665 666 /* Set cursor colour if changed. */ 667 if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0) 668 tty_force_cursor_colour(tty, s->ccolour); 669 670 /* If cursor is off, set as invisible. */ 671 if (~mode & MODE_CURSOR) { 672 if (changed & MODE_CURSOR) 673 tty_putcode(tty, TTYC_CIVIS); 674 return; 675 } 676 677 /* Check if blinking or very visible flag changed or style changed. */ 678 if (s == NULL) 679 cstyle = tty->cstyle; 680 else 681 cstyle = s->cstyle; 682 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 683 return; 684 685 /* 686 * Set cursor style. If an explicit style has been set with DECSCUSR, 687 * set it if supported, otherwise send cvvis for blinking styles. 688 * 689 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 690 * if either the blinking or very visible flags are set. 691 */ 692 tty_putcode(tty, TTYC_CNORM); 693 switch (cstyle) { 694 case SCREEN_CURSOR_DEFAULT: 695 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 696 if (tty_term_has(tty->term, TTYC_SE)) 697 tty_putcode(tty, TTYC_SE); 698 else 699 tty_putcode1(tty, TTYC_SS, 0); 700 } 701 if (mode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 702 tty_putcode(tty, TTYC_CVVIS); 703 break; 704 case SCREEN_CURSOR_BLOCK: 705 if (tty_term_has(tty->term, TTYC_SS)) { 706 if (mode & MODE_CURSOR_BLINKING) 707 tty_putcode1(tty, TTYC_SS, 1); 708 else 709 tty_putcode1(tty, TTYC_SS, 2); 710 } else if (mode & MODE_CURSOR_BLINKING) 711 tty_putcode(tty, TTYC_CVVIS); 712 break; 713 case SCREEN_CURSOR_UNDERLINE: 714 if (tty_term_has(tty->term, TTYC_SS)) { 715 if (mode & MODE_CURSOR_BLINKING) 716 tty_putcode1(tty, TTYC_SS, 3); 717 else 718 tty_putcode1(tty, TTYC_SS, 4); 719 } else if (mode & MODE_CURSOR_BLINKING) 720 tty_putcode(tty, TTYC_CVVIS); 721 break; 722 case SCREEN_CURSOR_BAR: 723 if (tty_term_has(tty->term, TTYC_SS)) { 724 if (mode & MODE_CURSOR_BLINKING) 725 tty_putcode1(tty, TTYC_SS, 5); 726 else 727 tty_putcode1(tty, TTYC_SS, 6); 728 } else if (mode & MODE_CURSOR_BLINKING) 729 tty_putcode(tty, TTYC_CVVIS); 730 break; 731 } 732 tty->cstyle = cstyle; 733 } 734 735 void 736 tty_update_mode(struct tty *tty, int mode, struct screen *s) 737 { 738 struct client *c = tty->client; 739 int changed; 740 741 if (tty->flags & TTY_NOCURSOR) 742 mode &= ~MODE_CURSOR; 743 744 changed = mode ^ tty->mode; 745 if (log_get_level() != 0 && changed != 0) { 746 log_debug("%s: current mode %s", c->name, 747 screen_mode_to_string(tty->mode)); 748 log_debug("%s: setting mode %s", c->name, 749 screen_mode_to_string(mode)); 750 } 751 752 tty_update_cursor(tty, mode, changed, s); 753 if ((changed & ALL_MOUSE_MODES) && 754 tty_term_has(tty->term, TTYC_KMOUS)) { 755 /* 756 * If the mouse modes have changed, clear any that are set and 757 * apply again. There are differences in how terminals track 758 * the various bits. 759 */ 760 if (tty->mode & MODE_MOUSE_SGR) 761 tty_puts(tty, "\033[?1006l"); 762 if (tty->mode & MODE_MOUSE_STANDARD) 763 tty_puts(tty, "\033[?1000l"); 764 if (tty->mode & MODE_MOUSE_BUTTON) 765 tty_puts(tty, "\033[?1002l"); 766 if (tty->mode & MODE_MOUSE_ALL) 767 tty_puts(tty, "\033[?1003l"); 768 if (mode & ALL_MOUSE_MODES) 769 tty_puts(tty, "\033[?1006h"); 770 if (mode & MODE_MOUSE_STANDARD) 771 tty_puts(tty, "\033[?1000h"); 772 if (mode & MODE_MOUSE_BUTTON) 773 tty_puts(tty, "\033[?1002h"); 774 if (mode & MODE_MOUSE_ALL) 775 tty_puts(tty, "\033[?1003h"); 776 } 777 if (changed & MODE_BRACKETPASTE) { 778 if (mode & MODE_BRACKETPASTE) 779 tty_putcode(tty, TTYC_ENBP); 780 else 781 tty_putcode(tty, TTYC_DSBP); 782 } 783 tty->mode = mode; 784 } 785 786 static void 787 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 788 enum tty_code_code code1, u_int n) 789 { 790 if (tty_term_has(tty->term, code)) 791 tty_putcode1(tty, code, n); 792 else { 793 while (n-- > 0) 794 tty_putcode(tty, code1); 795 } 796 } 797 798 static void 799 tty_repeat_space(struct tty *tty, u_int n) 800 { 801 static char s[500]; 802 803 if (*s != ' ') 804 memset(s, ' ', sizeof s); 805 806 while (n > sizeof s) { 807 tty_putn(tty, s, sizeof s, sizeof s); 808 n -= sizeof s; 809 } 810 if (n != 0) 811 tty_putn(tty, s, n, n); 812 } 813 814 /* Is this window bigger than the terminal? */ 815 int 816 tty_window_bigger(struct tty *tty) 817 { 818 struct client *c = tty->client; 819 struct window *w = c->session->curw->window; 820 821 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 822 } 823 824 /* What offset should this window be drawn at? */ 825 int 826 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 827 { 828 *ox = tty->oox; 829 *oy = tty->ooy; 830 *sx = tty->osx; 831 *sy = tty->osy; 832 833 return (tty->oflag); 834 } 835 836 /* What offset should this window be drawn at? */ 837 static int 838 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 839 { 840 struct client *c = tty->client; 841 struct window *w = c->session->curw->window; 842 struct window_pane *wp = server_client_get_pane(c); 843 u_int cx, cy, lines; 844 845 lines = status_line_size(c); 846 847 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 848 *ox = 0; 849 *oy = 0; 850 *sx = w->sx; 851 *sy = w->sy; 852 853 c->pan_window = NULL; 854 return (0); 855 } 856 857 *sx = tty->sx; 858 *sy = tty->sy - lines; 859 860 if (c->pan_window == w) { 861 if (*sx >= w->sx) 862 c->pan_ox = 0; 863 else if (c->pan_ox + *sx > w->sx) 864 c->pan_ox = w->sx - *sx; 865 *ox = c->pan_ox; 866 if (*sy >= w->sy) 867 c->pan_oy = 0; 868 else if (c->pan_oy + *sy > w->sy) 869 c->pan_oy = w->sy - *sy; 870 *oy = c->pan_oy; 871 return (1); 872 } 873 874 if (~wp->screen->mode & MODE_CURSOR) { 875 *ox = 0; 876 *oy = 0; 877 } else { 878 cx = wp->xoff + wp->screen->cx; 879 cy = wp->yoff + wp->screen->cy; 880 881 if (cx < *sx) 882 *ox = 0; 883 else if (cx > w->sx - *sx) 884 *ox = w->sx - *sx; 885 else 886 *ox = cx - *sx / 2; 887 888 if (cy < *sy) 889 *oy = 0; 890 else if (cy > w->sy - *sy) 891 *oy = w->sy - *sy; 892 else 893 *oy = cy - *sy / 2; 894 } 895 896 c->pan_window = NULL; 897 return (1); 898 } 899 900 /* Update stored offsets for a window and redraw if necessary. */ 901 void 902 tty_update_window_offset(struct window *w) 903 { 904 struct client *c; 905 906 TAILQ_FOREACH(c, &clients, entry) { 907 if (c->session != NULL && c->session->curw->window == w) 908 tty_update_client_offset(c); 909 } 910 } 911 912 /* Update stored offsets for a client and redraw if necessary. */ 913 void 914 tty_update_client_offset(struct client *c) 915 { 916 u_int ox, oy, sx, sy; 917 918 if (~c->flags & CLIENT_TERMINAL) 919 return; 920 921 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 922 if (ox == c->tty.oox && 923 oy == c->tty.ooy && 924 sx == c->tty.osx && 925 sy == c->tty.osy) 926 return; 927 928 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 929 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 930 ox, oy, sx, sy); 931 932 c->tty.oox = ox; 933 c->tty.ooy = oy; 934 c->tty.osx = sx; 935 c->tty.osy = sy; 936 937 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 938 } 939 940 /* 941 * Is the region large enough to be worth redrawing once later rather than 942 * probably several times now? Currently yes if it is more than 50% of the 943 * pane. 944 */ 945 static int 946 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 947 { 948 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 949 } 950 951 /* 952 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 953 * emulated. 954 */ 955 static int 956 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 957 { 958 if (tty_term_flag(tty->term, TTYC_BCE)) 959 return (0); 960 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 961 return (1); 962 return (0); 963 } 964 965 /* 966 * Redraw scroll region using data from screen (already updated). Used when 967 * CSR not supported, or window is a pane that doesn't take up the full 968 * width of the terminal. 969 */ 970 static void 971 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 972 { 973 struct client *c = tty->client; 974 u_int i; 975 976 /* 977 * If region is large, schedule a redraw. In most cases this is likely 978 * to be followed by some more scrolling. 979 */ 980 if (tty_large_region(tty, ctx)) { 981 log_debug("%s: %s large redraw", __func__, c->name); 982 ctx->redraw_cb(ctx); 983 return; 984 } 985 986 for (i = ctx->orupper; i <= ctx->orlower; i++) 987 tty_draw_pane(tty, ctx, i); 988 } 989 990 /* Is this position visible in the pane? */ 991 static int 992 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 993 u_int py, u_int nx, u_int ny) 994 { 995 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 996 997 if (!ctx->bigger) 998 return (1); 999 1000 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1001 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1002 return (0); 1003 return (1); 1004 } 1005 1006 /* Clamp line position to visible part of pane. */ 1007 static int 1008 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1009 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1010 { 1011 u_int xoff = ctx->rxoff + px; 1012 1013 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1014 return (0); 1015 *ry = ctx->yoff + py - ctx->woy; 1016 1017 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1018 /* All visible. */ 1019 *i = 0; 1020 *x = ctx->xoff + px - ctx->wox; 1021 *rx = nx; 1022 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1023 /* Both left and right not visible. */ 1024 *i = ctx->wox; 1025 *x = 0; 1026 *rx = ctx->wsx; 1027 } else if (xoff < ctx->wox) { 1028 /* Left not visible. */ 1029 *i = ctx->wox - (ctx->xoff + px); 1030 *x = 0; 1031 *rx = nx - *i; 1032 } else { 1033 /* Right not visible. */ 1034 *i = 0; 1035 *x = (ctx->xoff + px) - ctx->wox; 1036 *rx = ctx->wsx - *x; 1037 } 1038 if (*rx > nx) 1039 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1040 1041 return (1); 1042 } 1043 1044 /* Clear a line. */ 1045 static void 1046 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1047 u_int px, u_int nx, u_int bg) 1048 { 1049 struct client *c = tty->client; 1050 u_int i; 1051 1052 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1053 1054 /* Nothing to clear. */ 1055 if (nx == 0) 1056 return; 1057 1058 /* If genuine BCE is available, can try escape sequences. */ 1059 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1060 /* Off the end of the line, use EL if available. */ 1061 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1062 tty_cursor(tty, px, py); 1063 tty_putcode(tty, TTYC_EL); 1064 return; 1065 } 1066 1067 /* At the start of the line. Use EL1. */ 1068 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1069 tty_cursor(tty, px + nx - 1, py); 1070 tty_putcode(tty, TTYC_EL1); 1071 return; 1072 } 1073 1074 /* Section of line. Use ECH if possible. */ 1075 if (tty_term_has(tty->term, TTYC_ECH)) { 1076 tty_cursor(tty, px, py); 1077 tty_putcode1(tty, TTYC_ECH, nx); 1078 return; 1079 } 1080 } 1081 1082 /* 1083 * Couldn't use an escape sequence, use spaces. Clear only the visible 1084 * bit if there is an overlay. 1085 */ 1086 for (i = 0; i < nx; i++) { 1087 if (!tty_check_overlay(tty, px + i, py)) 1088 break; 1089 } 1090 tty_cursor(tty, px, py); 1091 tty_repeat_space(tty, i); 1092 for (; i < nx; i++) { 1093 if (tty_check_overlay(tty, px + i, py)) 1094 break; 1095 } 1096 tty_cursor(tty, px + i, py); 1097 tty_repeat_space(tty, nx - i); 1098 } 1099 1100 /* Clear a line, adjusting to visible part of pane. */ 1101 static void 1102 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1103 u_int px, u_int nx, u_int bg) 1104 { 1105 struct client *c = tty->client; 1106 u_int i, x, rx, ry; 1107 1108 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1109 1110 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1111 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1112 } 1113 1114 /* Clamp area position to visible part of pane. */ 1115 static int 1116 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1117 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1118 u_int *ry) 1119 { 1120 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1121 1122 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1123 return (0); 1124 1125 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1126 /* All visible. */ 1127 *i = 0; 1128 *x = ctx->xoff + px - ctx->wox; 1129 *rx = nx; 1130 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1131 /* Both left and right not visible. */ 1132 *i = ctx->wox; 1133 *x = 0; 1134 *rx = ctx->wsx; 1135 } else if (xoff < ctx->wox) { 1136 /* Left not visible. */ 1137 *i = ctx->wox - (ctx->xoff + px); 1138 *x = 0; 1139 *rx = nx - *i; 1140 } else { 1141 /* Right not visible. */ 1142 *i = 0; 1143 *x = (ctx->xoff + px) - ctx->wox; 1144 *rx = ctx->wsx - *x; 1145 } 1146 if (*rx > nx) 1147 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1148 1149 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1150 /* All visible. */ 1151 *j = 0; 1152 *y = ctx->yoff + py - ctx->woy; 1153 *ry = ny; 1154 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1155 /* Both top and bottom not visible. */ 1156 *j = ctx->woy; 1157 *y = 0; 1158 *ry = ctx->wsy; 1159 } else if (yoff < ctx->woy) { 1160 /* Top not visible. */ 1161 *j = ctx->woy - (ctx->yoff + py); 1162 *y = 0; 1163 *ry = ny - *j; 1164 } else { 1165 /* Bottom not visible. */ 1166 *j = 0; 1167 *y = (ctx->yoff + py) - ctx->woy; 1168 *ry = ctx->wsy - *y; 1169 } 1170 if (*ry > ny) 1171 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1172 1173 return (1); 1174 } 1175 1176 /* Clear an area, adjusting to visible part of pane. */ 1177 static void 1178 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1179 u_int ny, u_int px, u_int nx, u_int bg) 1180 { 1181 struct client *c = tty->client; 1182 u_int yy; 1183 char tmp[64]; 1184 1185 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1186 1187 /* Nothing to clear. */ 1188 if (nx == 0 || ny == 0) 1189 return; 1190 1191 /* If genuine BCE is available, can try escape sequences. */ 1192 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1193 /* Use ED if clearing off the bottom of the terminal. */ 1194 if (px == 0 && 1195 px + nx >= tty->sx && 1196 py + ny >= tty->sy && 1197 tty_term_has(tty->term, TTYC_ED)) { 1198 tty_cursor(tty, 0, py); 1199 tty_putcode(tty, TTYC_ED); 1200 return; 1201 } 1202 1203 /* 1204 * On VT420 compatible terminals we can use DECFRA if the 1205 * background colour isn't default (because it doesn't work 1206 * after SGR 0). 1207 */ 1208 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1209 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1210 py + 1, px + 1, py + ny, px + nx); 1211 tty_puts(tty, tmp); 1212 return; 1213 } 1214 1215 /* Full lines can be scrolled away to clear them. */ 1216 if (px == 0 && 1217 px + nx >= tty->sx && 1218 ny > 2 && 1219 tty_term_has(tty->term, TTYC_CSR) && 1220 tty_term_has(tty->term, TTYC_INDN)) { 1221 tty_region(tty, py, py + ny - 1); 1222 tty_margin_off(tty); 1223 tty_putcode1(tty, TTYC_INDN, ny); 1224 return; 1225 } 1226 1227 /* 1228 * If margins are supported, can just scroll the area off to 1229 * clear it. 1230 */ 1231 if (nx > 2 && 1232 ny > 2 && 1233 tty_term_has(tty->term, TTYC_CSR) && 1234 tty_use_margin(tty) && 1235 tty_term_has(tty->term, TTYC_INDN)) { 1236 tty_region(tty, py, py + ny - 1); 1237 tty_margin(tty, px, px + nx - 1); 1238 tty_putcode1(tty, TTYC_INDN, ny); 1239 return; 1240 } 1241 } 1242 1243 /* Couldn't use an escape sequence, loop over the lines. */ 1244 for (yy = py; yy < py + ny; yy++) 1245 tty_clear_line(tty, defaults, yy, px, nx, bg); 1246 } 1247 1248 /* Clear an area in a pane. */ 1249 static void 1250 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1251 u_int ny, u_int px, u_int nx, u_int bg) 1252 { 1253 u_int i, j, x, y, rx, ry; 1254 1255 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1256 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1257 } 1258 1259 static void 1260 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1261 { 1262 struct screen *s = ctx->s; 1263 u_int nx = ctx->sx, i, x, rx, ry; 1264 1265 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1266 1267 if (!ctx->bigger) { 1268 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1269 &ctx->defaults, ctx->palette); 1270 return; 1271 } 1272 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1273 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1274 ctx->palette); 1275 } 1276 } 1277 1278 static const struct grid_cell * 1279 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1280 { 1281 static struct grid_cell new; 1282 int c; 1283 1284 /* Characters less than 0x7f are always fine, no matter what. */ 1285 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1286 return (gc); 1287 1288 /* UTF-8 terminal and a UTF-8 character - fine. */ 1289 if (tty->client->flags & CLIENT_UTF8) 1290 return (gc); 1291 memcpy(&new, gc, sizeof new); 1292 1293 /* See if this can be mapped to an ACS character. */ 1294 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1295 if (c != -1) { 1296 utf8_set(&new.data, c); 1297 new.attr |= GRID_ATTR_CHARSET; 1298 return (&new); 1299 } 1300 1301 /* Replace by the right number of underscores. */ 1302 new.data.size = gc->data.width; 1303 if (new.data.size > UTF8_SIZE) 1304 new.data.size = UTF8_SIZE; 1305 memset(new.data.data, '_', new.data.size); 1306 return (&new); 1307 } 1308 1309 static int 1310 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1311 { 1312 struct client *c = tty->client; 1313 1314 if (c->overlay_check == NULL) 1315 return (1); 1316 return (c->overlay_check(c, c->overlay_data, px, py)); 1317 } 1318 1319 void 1320 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1321 u_int atx, u_int aty, const struct grid_cell *defaults, 1322 struct colour_palette *palette) 1323 { 1324 struct grid *gd = s->grid; 1325 struct grid_cell gc, last; 1326 const struct grid_cell *gcp; 1327 struct grid_line *gl; 1328 struct client *c = tty->client; 1329 u_int i, j, ux, sx, width, hidden; 1330 int flags, cleared = 0, wrapped = 0; 1331 char buf[512]; 1332 size_t len; 1333 u_int cellsize; 1334 1335 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1336 px, py, nx, atx, aty); 1337 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1338 defaults->bg); 1339 1340 /* 1341 * py is the line in the screen to draw. 1342 * px is the start x and nx is the width to draw. 1343 * atx,aty is the line on the terminal to draw it. 1344 */ 1345 1346 flags = (tty->flags & TTY_NOCURSOR); 1347 tty->flags |= TTY_NOCURSOR; 1348 tty_update_mode(tty, tty->mode, s); 1349 1350 tty_region_off(tty); 1351 tty_margin_off(tty); 1352 1353 /* 1354 * Clamp the width to cellsize - note this is not cellused, because 1355 * there may be empty background cells after it (from BCE). 1356 */ 1357 sx = screen_size_x(s); 1358 if (nx > sx) 1359 nx = sx; 1360 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1361 if (sx > cellsize) 1362 sx = cellsize; 1363 if (sx > tty->sx) 1364 sx = tty->sx; 1365 if (sx > nx) 1366 sx = nx; 1367 ux = 0; 1368 1369 if (py == 0) 1370 gl = NULL; 1371 else 1372 gl = grid_get_line(gd, gd->hsize + py - 1); 1373 if (gl == NULL || 1374 (~gl->flags & GRID_LINE_WRAPPED) || 1375 atx != 0 || 1376 tty->cx < tty->sx || 1377 nx < tty->sx) { 1378 if (nx < tty->sx && 1379 atx == 0 && 1380 px + sx != nx && 1381 tty_term_has(tty->term, TTYC_EL1) && 1382 !tty_fake_bce(tty, defaults, 8) && 1383 c->overlay_check == NULL) { 1384 tty_default_attributes(tty, defaults, palette, 8); 1385 tty_cursor(tty, nx - 1, aty); 1386 tty_putcode(tty, TTYC_EL1); 1387 cleared = 1; 1388 } 1389 } else { 1390 log_debug("%s: wrapped line %u", __func__, aty); 1391 wrapped = 1; 1392 } 1393 1394 memcpy(&last, &grid_default_cell, sizeof last); 1395 len = 0; 1396 width = 0; 1397 1398 for (i = 0; i < sx; i++) { 1399 grid_view_get_cell(gd, px + i, py, &gc); 1400 gcp = tty_check_codeset(tty, &gc); 1401 if (len != 0 && 1402 (!tty_check_overlay(tty, atx + ux + width, aty) || 1403 (gcp->attr & GRID_ATTR_CHARSET) || 1404 gcp->flags != last.flags || 1405 gcp->attr != last.attr || 1406 gcp->fg != last.fg || 1407 gcp->bg != last.bg || 1408 gcp->us != last.us || 1409 ux + width + gcp->data.width > nx || 1410 (sizeof buf) - len < gcp->data.size)) { 1411 tty_attributes(tty, &last, defaults, palette); 1412 if (last.flags & GRID_FLAG_CLEARED) { 1413 log_debug("%s: %zu cleared", __func__, len); 1414 tty_clear_line(tty, defaults, aty, atx + ux, 1415 width, last.bg); 1416 } else { 1417 if (!wrapped || atx != 0 || ux != 0) 1418 tty_cursor(tty, atx + ux, aty); 1419 tty_putn(tty, buf, len, width); 1420 } 1421 ux += width; 1422 1423 len = 0; 1424 width = 0; 1425 wrapped = 0; 1426 } 1427 1428 if (gcp->flags & GRID_FLAG_SELECTED) 1429 screen_select_cell(s, &last, gcp); 1430 else 1431 memcpy(&last, gcp, sizeof last); 1432 1433 hidden = 0; 1434 for (j = 0; j < gcp->data.width; j++) { 1435 if (!tty_check_overlay(tty, atx + ux + j, aty)) 1436 hidden++; 1437 } 1438 if (hidden != 0 && hidden == gcp->data.width) { 1439 if (~gcp->flags & GRID_FLAG_PADDING) 1440 ux += gcp->data.width; 1441 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1442 if (~gcp->flags & GRID_FLAG_PADDING) { 1443 tty_attributes(tty, &last, defaults, palette); 1444 tty_cursor(tty, atx + ux, aty); 1445 for (j = 0; j < gcp->data.width; j++) { 1446 if (ux > nx) 1447 break; 1448 if (tty_check_overlay(tty, atx + ux, 1449 aty)) 1450 tty_putc(tty, ' '); 1451 else { 1452 tty_cursor(tty, atx + ux + 1, 1453 aty); 1454 } 1455 ux++; 1456 } 1457 } 1458 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1459 tty_attributes(tty, &last, defaults, palette); 1460 tty_cursor(tty, atx + ux, aty); 1461 for (j = 0; j < gcp->data.size; j++) 1462 tty_putc(tty, gcp->data.data[j]); 1463 ux += gcp->data.width; 1464 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1465 memcpy(buf + len, gcp->data.data, gcp->data.size); 1466 len += gcp->data.size; 1467 width += gcp->data.width; 1468 } 1469 } 1470 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1471 tty_attributes(tty, &last, defaults, palette); 1472 if (last.flags & GRID_FLAG_CLEARED) { 1473 log_debug("%s: %zu cleared (end)", __func__, len); 1474 tty_clear_line(tty, defaults, aty, atx + ux, width, 1475 last.bg); 1476 } else { 1477 if (!wrapped || atx != 0 || ux != 0) 1478 tty_cursor(tty, atx + ux, aty); 1479 tty_putn(tty, buf, len, width); 1480 } 1481 ux += width; 1482 } 1483 1484 if (!cleared && ux < nx) { 1485 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1486 nx - ux, len); 1487 tty_default_attributes(tty, defaults, palette, 8); 1488 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1489 } 1490 1491 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1492 tty_update_mode(tty, tty->mode, s); 1493 } 1494 1495 void 1496 tty_sync_start(struct tty *tty) 1497 { 1498 if (tty->flags & TTY_BLOCK) 1499 return; 1500 if (tty->flags & TTY_SYNCING) 1501 return; 1502 tty->flags |= TTY_SYNCING; 1503 1504 if (tty_term_has(tty->term, TTYC_SYNC)) { 1505 log_debug("%s sync start", tty->client->name); 1506 tty_putcode1(tty, TTYC_SYNC, 1); 1507 } 1508 } 1509 1510 void 1511 tty_sync_end(struct tty *tty) 1512 { 1513 if (tty->flags & TTY_BLOCK) 1514 return; 1515 if (~tty->flags & TTY_SYNCING) 1516 return; 1517 tty->flags &= ~TTY_SYNCING; 1518 1519 if (tty_term_has(tty->term, TTYC_SYNC)) { 1520 log_debug("%s sync end", tty->client->name); 1521 tty_putcode1(tty, TTYC_SYNC, 2); 1522 } 1523 } 1524 1525 static int 1526 tty_client_ready(struct client *c) 1527 { 1528 if (c->session == NULL || c->tty.term == NULL) 1529 return (0); 1530 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1531 return (0); 1532 if (c->tty.flags & TTY_FREEZE) 1533 return (0); 1534 return (1); 1535 } 1536 1537 void 1538 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1539 struct tty_ctx *ctx) 1540 { 1541 struct client *c; 1542 int state; 1543 1544 if (ctx->set_client_cb == NULL) 1545 return; 1546 TAILQ_FOREACH(c, &clients, entry) { 1547 if (!tty_client_ready(c)) 1548 continue; 1549 state = ctx->set_client_cb(ctx, c); 1550 if (state == -1) 1551 break; 1552 if (state == 0) 1553 continue; 1554 cmdfn(&c->tty, ctx); 1555 } 1556 } 1557 1558 void 1559 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1560 { 1561 struct client *c = tty->client; 1562 1563 if (ctx->bigger || 1564 !tty_full_width(tty, ctx) || 1565 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1566 (!tty_term_has(tty->term, TTYC_ICH) && 1567 !tty_term_has(tty->term, TTYC_ICH1)) || 1568 c->overlay_check != NULL) { 1569 tty_draw_pane(tty, ctx, ctx->ocy); 1570 return; 1571 } 1572 1573 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1574 1575 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1576 1577 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1578 } 1579 1580 void 1581 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1582 { 1583 struct client *c = tty->client; 1584 1585 if (ctx->bigger || 1586 !tty_full_width(tty, ctx) || 1587 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1588 (!tty_term_has(tty->term, TTYC_DCH) && 1589 !tty_term_has(tty->term, TTYC_DCH1)) || 1590 c->overlay_check != NULL) { 1591 tty_draw_pane(tty, ctx, ctx->ocy); 1592 return; 1593 } 1594 1595 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1596 1597 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1598 1599 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1600 } 1601 1602 void 1603 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1604 { 1605 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1606 1607 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1608 } 1609 1610 void 1611 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1612 { 1613 struct client *c = tty->client; 1614 1615 if (ctx->bigger || 1616 !tty_full_width(tty, ctx) || 1617 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1618 !tty_term_has(tty->term, TTYC_CSR) || 1619 !tty_term_has(tty->term, TTYC_IL1) || 1620 ctx->sx == 1 || 1621 ctx->sy == 1 || 1622 c->overlay_check != NULL) { 1623 tty_redraw_region(tty, ctx); 1624 return; 1625 } 1626 1627 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1628 1629 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1630 tty_margin_off(tty); 1631 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1632 1633 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1634 tty->cx = tty->cy = UINT_MAX; 1635 } 1636 1637 void 1638 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1639 { 1640 struct client *c = tty->client; 1641 1642 if (ctx->bigger || 1643 !tty_full_width(tty, ctx) || 1644 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1645 !tty_term_has(tty->term, TTYC_CSR) || 1646 !tty_term_has(tty->term, TTYC_DL1) || 1647 ctx->sx == 1 || 1648 ctx->sy == 1 || 1649 c->overlay_check != NULL) { 1650 tty_redraw_region(tty, ctx); 1651 return; 1652 } 1653 1654 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1655 1656 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1657 tty_margin_off(tty); 1658 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1659 1660 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1661 tty->cx = tty->cy = UINT_MAX; 1662 } 1663 1664 void 1665 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1666 { 1667 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1668 1669 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1670 } 1671 1672 void 1673 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1674 { 1675 u_int nx = ctx->sx - ctx->ocx; 1676 1677 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1678 1679 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1680 } 1681 1682 void 1683 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1684 { 1685 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1686 1687 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1688 } 1689 1690 void 1691 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1692 { 1693 struct client *c = tty->client; 1694 1695 if (ctx->ocy != ctx->orupper) 1696 return; 1697 1698 if (ctx->bigger || 1699 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1700 tty_fake_bce(tty, &ctx->defaults, 8) || 1701 !tty_term_has(tty->term, TTYC_CSR) || 1702 (!tty_term_has(tty->term, TTYC_RI) && 1703 !tty_term_has(tty->term, TTYC_RIN)) || 1704 ctx->sx == 1 || 1705 ctx->sy == 1 || 1706 c->overlay_check != NULL) { 1707 tty_redraw_region(tty, ctx); 1708 return; 1709 } 1710 1711 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1712 1713 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1714 tty_margin_pane(tty, ctx); 1715 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1716 1717 if (tty_term_has(tty->term, TTYC_RI)) 1718 tty_putcode(tty, TTYC_RI); 1719 else 1720 tty_putcode1(tty, TTYC_RIN, 1); 1721 } 1722 1723 void 1724 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1725 { 1726 struct client *c = tty->client; 1727 1728 if (ctx->ocy != ctx->orlower) 1729 return; 1730 1731 if (ctx->bigger || 1732 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1733 tty_fake_bce(tty, &ctx->defaults, 8) || 1734 !tty_term_has(tty->term, TTYC_CSR) || 1735 ctx->sx == 1 || 1736 ctx->sy == 1 || 1737 c->overlay_check != NULL) { 1738 tty_redraw_region(tty, ctx); 1739 return; 1740 } 1741 1742 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1743 1744 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1745 tty_margin_pane(tty, ctx); 1746 1747 /* 1748 * If we want to wrap a pane while using margins, the cursor needs to 1749 * be exactly on the right of the region. If the cursor is entirely off 1750 * the edge - move it back to the right. Some terminals are funny about 1751 * this and insert extra spaces, so only use the right if margins are 1752 * enabled. 1753 */ 1754 if (ctx->xoff + ctx->ocx > tty->rright) { 1755 if (!tty_use_margin(tty)) 1756 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1757 else 1758 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1759 } else 1760 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1761 1762 tty_putc(tty, '\n'); 1763 } 1764 1765 void 1766 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1767 { 1768 struct client *c = tty->client; 1769 u_int i; 1770 1771 if (ctx->bigger || 1772 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1773 tty_fake_bce(tty, &ctx->defaults, 8) || 1774 !tty_term_has(tty->term, TTYC_CSR) || 1775 ctx->sx == 1 || 1776 ctx->sy == 1 || 1777 c->overlay_check != NULL) { 1778 tty_redraw_region(tty, ctx); 1779 return; 1780 } 1781 1782 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1783 1784 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1785 tty_margin_pane(tty, ctx); 1786 1787 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1788 if (!tty_use_margin(tty)) 1789 tty_cursor(tty, 0, tty->rlower); 1790 else 1791 tty_cursor(tty, tty->rright, tty->rlower); 1792 for (i = 0; i < ctx->num; i++) 1793 tty_putc(tty, '\n'); 1794 } else { 1795 if (tty->cy == UINT_MAX) 1796 tty_cursor(tty, 0, 0); 1797 else 1798 tty_cursor(tty, 0, tty->cy); 1799 tty_putcode1(tty, TTYC_INDN, ctx->num); 1800 } 1801 } 1802 1803 void 1804 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1805 { 1806 u_int i; 1807 struct client *c = tty->client; 1808 1809 if (ctx->bigger || 1810 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1811 tty_fake_bce(tty, &ctx->defaults, 8) || 1812 !tty_term_has(tty->term, TTYC_CSR) || 1813 (!tty_term_has(tty->term, TTYC_RI) && 1814 !tty_term_has(tty->term, TTYC_RIN)) || 1815 ctx->sx == 1 || 1816 ctx->sy == 1 || 1817 c->overlay_check != NULL) { 1818 tty_redraw_region(tty, ctx); 1819 return; 1820 } 1821 1822 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1823 1824 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1825 tty_margin_pane(tty, ctx); 1826 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1827 1828 if (tty_term_has(tty->term, TTYC_RIN)) 1829 tty_putcode1(tty, TTYC_RIN, ctx->num); 1830 else { 1831 for (i = 0; i < ctx->num; i++) 1832 tty_putcode(tty, TTYC_RI); 1833 } 1834 } 1835 1836 void 1837 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1838 { 1839 u_int px, py, nx, ny; 1840 1841 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1842 1843 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1844 tty_margin_off(tty); 1845 1846 px = 0; 1847 nx = ctx->sx; 1848 py = ctx->ocy + 1; 1849 ny = ctx->sy - ctx->ocy - 1; 1850 1851 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1852 1853 px = ctx->ocx; 1854 nx = ctx->sx - ctx->ocx; 1855 py = ctx->ocy; 1856 1857 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1858 } 1859 1860 void 1861 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1862 { 1863 u_int px, py, nx, ny; 1864 1865 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1866 1867 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1868 tty_margin_off(tty); 1869 1870 px = 0; 1871 nx = ctx->sx; 1872 py = 0; 1873 ny = ctx->ocy; 1874 1875 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1876 1877 px = 0; 1878 nx = ctx->ocx + 1; 1879 py = ctx->ocy; 1880 1881 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1882 } 1883 1884 void 1885 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1886 { 1887 u_int px, py, nx, ny; 1888 1889 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1890 1891 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1892 tty_margin_off(tty); 1893 1894 px = 0; 1895 nx = ctx->sx; 1896 py = 0; 1897 ny = ctx->sy; 1898 1899 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1900 } 1901 1902 void 1903 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1904 { 1905 u_int i, j; 1906 1907 if (ctx->bigger) { 1908 ctx->redraw_cb(ctx); 1909 return; 1910 } 1911 1912 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette); 1913 1914 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1915 tty_margin_off(tty); 1916 1917 for (j = 0; j < ctx->sy; j++) { 1918 tty_cursor_pane(tty, ctx, 0, j); 1919 for (i = 0; i < ctx->sx; i++) 1920 tty_putc(tty, 'E'); 1921 } 1922 } 1923 1924 void 1925 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1926 { 1927 const struct grid_cell *gcp = ctx->cell; 1928 struct screen *s = ctx->s; 1929 u_int i, px, py; 1930 1931 px = ctx->xoff + ctx->ocx - ctx->wox; 1932 py = ctx->yoff + ctx->ocy - ctx->woy; 1933 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 1934 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 1935 return; 1936 1937 /* Handle partially obstructed wide characters. */ 1938 if (gcp->data.width > 1) { 1939 for (i = 0; i < gcp->data.width; i++) { 1940 if (!tty_check_overlay(tty, px + i, py)) { 1941 tty_draw_line(tty, s, s->cx, s->cy, 1942 gcp->data.width, px, py, &ctx->defaults, 1943 ctx->palette); 1944 return; 1945 } 1946 } 1947 } 1948 1949 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 1950 ctx->ocy == ctx->orlower && 1951 tty_full_width(tty, ctx)) 1952 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1953 1954 tty_margin_off(tty); 1955 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1956 1957 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette); 1958 } 1959 1960 void 1961 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1962 { 1963 u_int i, hide = 0; 1964 1965 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 1966 return; 1967 1968 if (ctx->bigger && 1969 (ctx->xoff + ctx->ocx < ctx->wox || 1970 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 1971 if (!ctx->wrapped || 1972 !tty_full_width(tty, ctx) || 1973 (tty->term->flags & TERM_NOAM) || 1974 ctx->xoff + ctx->ocx != 0 || 1975 ctx->yoff + ctx->ocy != tty->cy + 1 || 1976 tty->cx < tty->sx || 1977 tty->cy == tty->rlower) 1978 tty_draw_pane(tty, ctx, ctx->ocy); 1979 else 1980 ctx->redraw_cb(ctx); 1981 return; 1982 } 1983 1984 tty_margin_off(tty); 1985 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1986 1987 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette); 1988 for (i = 0; i < ctx->num; i++) { 1989 if (!tty_check_overlay(tty, tty->cx + i, tty->cy)) 1990 break; 1991 } 1992 tty_putn(tty, ctx->ptr, i, i); 1993 for (; i < ctx->num; i++) { 1994 if (tty_check_overlay(tty, tty->cx + hide, tty->cy)) 1995 break; 1996 hide++; 1997 } 1998 tty_cursor(tty, tty->cx + hide, tty->cy); 1999 tty_putn(tty, (char *)ctx->ptr + i, ctx->num - i, ctx->num - i); 2000 } 2001 2002 void 2003 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2004 { 2005 tty_set_selection(tty, ctx->ptr, ctx->num); 2006 } 2007 2008 void 2009 tty_set_selection(struct tty *tty, const char *buf, size_t len) 2010 { 2011 char *encoded; 2012 size_t size; 2013 2014 if (~tty->flags & TTY_STARTED) 2015 return; 2016 if (!tty_term_has(tty->term, TTYC_MS)) 2017 return; 2018 2019 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2020 encoded = xmalloc(size); 2021 2022 b64_ntop(buf, len, encoded, size); 2023 tty_putcode_ptr2(tty, TTYC_MS, "", encoded); 2024 tty->client->redraw = EVBUFFER_LENGTH(tty->out); 2025 2026 free(encoded); 2027 } 2028 2029 void 2030 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2031 { 2032 tty_add(tty, ctx->ptr, ctx->num); 2033 tty_invalidate(tty); 2034 } 2035 2036 void 2037 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2038 { 2039 if (ctx->num == 0x11) { 2040 /* 2041 * This is an overlay and a command that moves the cursor so 2042 * start synchronized updates. 2043 */ 2044 tty_sync_start(tty); 2045 } else if (~ctx->num & 0x10) { 2046 /* 2047 * This is a pane. If there is an overlay, always start; 2048 * otherwise, only if requested. 2049 */ 2050 if (ctx->num || tty->client->overlay_draw != NULL) 2051 tty_sync_start(tty); 2052 } 2053 } 2054 2055 void 2056 tty_cell(struct tty *tty, const struct grid_cell *gc, 2057 const struct grid_cell *defaults, struct colour_palette *palette) 2058 { 2059 const struct grid_cell *gcp; 2060 2061 /* Skip last character if terminal is stupid. */ 2062 if ((tty->term->flags & TERM_NOAM) && 2063 tty->cy == tty->sy - 1 && 2064 tty->cx == tty->sx - 1) 2065 return; 2066 2067 /* If this is a padding character, do nothing. */ 2068 if (gc->flags & GRID_FLAG_PADDING) 2069 return; 2070 2071 /* Check the output codeset and apply attributes. */ 2072 gcp = tty_check_codeset(tty, gc); 2073 tty_attributes(tty, gcp, defaults, palette); 2074 2075 /* If it is a single character, write with putc to handle ACS. */ 2076 if (gcp->data.size == 1) { 2077 tty_attributes(tty, gcp, defaults, palette); 2078 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2079 return; 2080 tty_putc(tty, *gcp->data.data); 2081 return; 2082 } 2083 2084 /* Write the data. */ 2085 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2086 } 2087 2088 void 2089 tty_reset(struct tty *tty) 2090 { 2091 struct grid_cell *gc = &tty->cell; 2092 2093 if (!grid_cells_equal(gc, &grid_default_cell)) { 2094 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2095 tty_putcode(tty, TTYC_RMACS); 2096 tty_putcode(tty, TTYC_SGR0); 2097 memcpy(gc, &grid_default_cell, sizeof *gc); 2098 } 2099 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2100 } 2101 2102 static void 2103 tty_invalidate(struct tty *tty) 2104 { 2105 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2106 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2107 2108 tty->cx = tty->cy = UINT_MAX; 2109 tty->rupper = tty->rleft = UINT_MAX; 2110 tty->rlower = tty->rright = UINT_MAX; 2111 2112 if (tty->flags & TTY_STARTED) { 2113 if (tty_use_margin(tty)) 2114 tty_putcode(tty, TTYC_ENMG); 2115 tty_putcode(tty, TTYC_SGR0); 2116 2117 tty->mode = ALL_MODES; 2118 tty_update_mode(tty, MODE_CURSOR, NULL); 2119 2120 tty_cursor(tty, 0, 0); 2121 tty_region_off(tty); 2122 tty_margin_off(tty); 2123 } else 2124 tty->mode = MODE_CURSOR; 2125 } 2126 2127 /* Turn off margin. */ 2128 void 2129 tty_region_off(struct tty *tty) 2130 { 2131 tty_region(tty, 0, tty->sy - 1); 2132 } 2133 2134 /* Set region inside pane. */ 2135 static void 2136 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2137 u_int rlower) 2138 { 2139 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2140 ctx->yoff + rlower - ctx->woy); 2141 } 2142 2143 /* Set region at absolute position. */ 2144 static void 2145 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2146 { 2147 if (tty->rlower == rlower && tty->rupper == rupper) 2148 return; 2149 if (!tty_term_has(tty->term, TTYC_CSR)) 2150 return; 2151 2152 tty->rupper = rupper; 2153 tty->rlower = rlower; 2154 2155 /* 2156 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2157 * 0,0 if it is beyond the last column (they do not reset their wrap 2158 * flag so further output causes a line feed). As a workaround, do an 2159 * explicit move to 0 first. 2160 */ 2161 if (tty->cx >= tty->sx) { 2162 if (tty->cy == UINT_MAX) 2163 tty_cursor(tty, 0, 0); 2164 else 2165 tty_cursor(tty, 0, tty->cy); 2166 } 2167 2168 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2169 tty->cx = tty->cy = UINT_MAX; 2170 } 2171 2172 /* Turn off margin. */ 2173 void 2174 tty_margin_off(struct tty *tty) 2175 { 2176 tty_margin(tty, 0, tty->sx - 1); 2177 } 2178 2179 /* Set margin inside pane. */ 2180 static void 2181 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2182 { 2183 tty_margin(tty, ctx->xoff - ctx->wox, 2184 ctx->xoff + ctx->sx - 1 - ctx->wox); 2185 } 2186 2187 /* Set margin at absolute position. */ 2188 static void 2189 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2190 { 2191 if (!tty_use_margin(tty)) 2192 return; 2193 if (tty->rleft == rleft && tty->rright == rright) 2194 return; 2195 2196 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2197 2198 tty->rleft = rleft; 2199 tty->rright = rright; 2200 2201 if (rleft == 0 && rright == tty->sx - 1) 2202 tty_putcode(tty, TTYC_CLMG); 2203 else 2204 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2205 tty->cx = tty->cy = UINT_MAX; 2206 } 2207 2208 /* 2209 * Move the cursor, unless it would wrap itself when the next character is 2210 * printed. 2211 */ 2212 static void 2213 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2214 u_int cx, u_int cy) 2215 { 2216 if (!ctx->wrapped || 2217 !tty_full_width(tty, ctx) || 2218 (tty->term->flags & TERM_NOAM) || 2219 ctx->xoff + cx != 0 || 2220 ctx->yoff + cy != tty->cy + 1 || 2221 tty->cx < tty->sx || 2222 tty->cy == tty->rlower) 2223 tty_cursor_pane(tty, ctx, cx, cy); 2224 else 2225 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2226 } 2227 2228 /* Move cursor inside pane. */ 2229 static void 2230 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2231 { 2232 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2233 } 2234 2235 /* Move cursor to absolute position. */ 2236 void 2237 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2238 { 2239 struct tty_term *term = tty->term; 2240 u_int thisx, thisy; 2241 int change; 2242 2243 if (tty->flags & TTY_BLOCK) 2244 return; 2245 2246 if (cx > tty->sx - 1) 2247 cx = tty->sx - 1; 2248 2249 thisx = tty->cx; 2250 thisy = tty->cy; 2251 2252 /* No change. */ 2253 if (cx == thisx && cy == thisy) 2254 return; 2255 2256 /* Very end of the line, just use absolute movement. */ 2257 if (thisx > tty->sx - 1) 2258 goto absolute; 2259 2260 /* Move to home position (0, 0). */ 2261 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2262 tty_putcode(tty, TTYC_HOME); 2263 goto out; 2264 } 2265 2266 /* Zero on the next line. */ 2267 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2268 (!tty_use_margin(tty) || tty->rleft == 0)) { 2269 tty_putc(tty, '\r'); 2270 tty_putc(tty, '\n'); 2271 goto out; 2272 } 2273 2274 /* Moving column or row. */ 2275 if (cy == thisy) { 2276 /* 2277 * Moving column only, row staying the same. 2278 */ 2279 2280 /* To left edge. */ 2281 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2282 tty_putc(tty, '\r'); 2283 goto out; 2284 } 2285 2286 /* One to the left. */ 2287 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2288 tty_putcode(tty, TTYC_CUB1); 2289 goto out; 2290 } 2291 2292 /* One to the right. */ 2293 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2294 tty_putcode(tty, TTYC_CUF1); 2295 goto out; 2296 } 2297 2298 /* Calculate difference. */ 2299 change = thisx - cx; /* +ve left, -ve right */ 2300 2301 /* 2302 * Use HPA if change is larger than absolute, otherwise move 2303 * the cursor with CUB/CUF. 2304 */ 2305 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2306 tty_putcode1(tty, TTYC_HPA, cx); 2307 goto out; 2308 } else if (change > 0 && 2309 tty_term_has(term, TTYC_CUB) && 2310 !tty_use_margin(tty)) { 2311 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2312 tty_putcode(tty, TTYC_CUB1); 2313 tty_putcode(tty, TTYC_CUB1); 2314 goto out; 2315 } 2316 tty_putcode1(tty, TTYC_CUB, change); 2317 goto out; 2318 } else if (change < 0 && 2319 tty_term_has(term, TTYC_CUF) && 2320 !tty_use_margin(tty)) { 2321 tty_putcode1(tty, TTYC_CUF, -change); 2322 goto out; 2323 } 2324 } else if (cx == thisx) { 2325 /* 2326 * Moving row only, column staying the same. 2327 */ 2328 2329 /* One above. */ 2330 if (thisy != tty->rupper && 2331 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2332 tty_putcode(tty, TTYC_CUU1); 2333 goto out; 2334 } 2335 2336 /* One below. */ 2337 if (thisy != tty->rlower && 2338 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2339 tty_putcode(tty, TTYC_CUD1); 2340 goto out; 2341 } 2342 2343 /* Calculate difference. */ 2344 change = thisy - cy; /* +ve up, -ve down */ 2345 2346 /* 2347 * Try to use VPA if change is larger than absolute or if this 2348 * change would cross the scroll region, otherwise use CUU/CUD. 2349 */ 2350 if ((u_int) abs(change) > cy || 2351 (change < 0 && cy - change > tty->rlower) || 2352 (change > 0 && cy - change < tty->rupper)) { 2353 if (tty_term_has(term, TTYC_VPA)) { 2354 tty_putcode1(tty, TTYC_VPA, cy); 2355 goto out; 2356 } 2357 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2358 tty_putcode1(tty, TTYC_CUU, change); 2359 goto out; 2360 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2361 tty_putcode1(tty, TTYC_CUD, -change); 2362 goto out; 2363 } 2364 } 2365 2366 absolute: 2367 /* Absolute movement. */ 2368 tty_putcode2(tty, TTYC_CUP, cy, cx); 2369 2370 out: 2371 tty->cx = cx; 2372 tty->cy = cy; 2373 } 2374 2375 void 2376 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2377 const struct grid_cell *defaults, struct colour_palette *palette) 2378 { 2379 struct grid_cell *tc = &tty->cell, gc2; 2380 int changed; 2381 2382 /* Copy cell and update default colours. */ 2383 memcpy(&gc2, gc, sizeof gc2); 2384 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2385 if (gc2.fg == 8) 2386 gc2.fg = defaults->fg; 2387 if (gc2.bg == 8) 2388 gc2.bg = defaults->bg; 2389 } 2390 2391 /* Ignore cell if it is the same as the last one. */ 2392 if (gc2.attr == tty->last_cell.attr && 2393 gc2.fg == tty->last_cell.fg && 2394 gc2.bg == tty->last_cell.bg && 2395 gc2.us == tty->last_cell.us) 2396 return; 2397 2398 /* 2399 * If no setab, try to use the reverse attribute as a best-effort for a 2400 * non-default background. This is a bit of a hack but it doesn't do 2401 * any serious harm and makes a couple of applications happier. 2402 */ 2403 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2404 if (gc2.attr & GRID_ATTR_REVERSE) { 2405 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2406 gc2.attr &= ~GRID_ATTR_REVERSE; 2407 } else { 2408 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2409 gc2.attr |= GRID_ATTR_REVERSE; 2410 } 2411 } 2412 2413 /* Fix up the colours if necessary. */ 2414 tty_check_fg(tty, palette, &gc2); 2415 tty_check_bg(tty, palette, &gc2); 2416 tty_check_us(tty, palette, &gc2); 2417 2418 /* 2419 * If any bits are being cleared or the underline colour is now default, 2420 * reset everything. 2421 */ 2422 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2423 tty_reset(tty); 2424 2425 /* 2426 * Set the colours. This may call tty_reset() (so it comes next) and 2427 * may add to (NOT remove) the desired attributes. 2428 */ 2429 tty_colours(tty, &gc2); 2430 2431 /* Filter out attribute bits already set. */ 2432 changed = gc2.attr & ~tc->attr; 2433 tc->attr = gc2.attr; 2434 2435 /* Set the attributes. */ 2436 if (changed & GRID_ATTR_BRIGHT) 2437 tty_putcode(tty, TTYC_BOLD); 2438 if (changed & GRID_ATTR_DIM) 2439 tty_putcode(tty, TTYC_DIM); 2440 if (changed & GRID_ATTR_ITALICS) 2441 tty_set_italics(tty); 2442 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2443 if ((changed & GRID_ATTR_UNDERSCORE) || 2444 !tty_term_has(tty->term, TTYC_SMULX)) 2445 tty_putcode(tty, TTYC_SMUL); 2446 else if (changed & GRID_ATTR_UNDERSCORE_2) 2447 tty_putcode1(tty, TTYC_SMULX, 2); 2448 else if (changed & GRID_ATTR_UNDERSCORE_3) 2449 tty_putcode1(tty, TTYC_SMULX, 3); 2450 else if (changed & GRID_ATTR_UNDERSCORE_4) 2451 tty_putcode1(tty, TTYC_SMULX, 4); 2452 else if (changed & GRID_ATTR_UNDERSCORE_5) 2453 tty_putcode1(tty, TTYC_SMULX, 5); 2454 } 2455 if (changed & GRID_ATTR_BLINK) 2456 tty_putcode(tty, TTYC_BLINK); 2457 if (changed & GRID_ATTR_REVERSE) { 2458 if (tty_term_has(tty->term, TTYC_REV)) 2459 tty_putcode(tty, TTYC_REV); 2460 else if (tty_term_has(tty->term, TTYC_SMSO)) 2461 tty_putcode(tty, TTYC_SMSO); 2462 } 2463 if (changed & GRID_ATTR_HIDDEN) 2464 tty_putcode(tty, TTYC_INVIS); 2465 if (changed & GRID_ATTR_STRIKETHROUGH) 2466 tty_putcode(tty, TTYC_SMXX); 2467 if (changed & GRID_ATTR_OVERLINE) 2468 tty_putcode(tty, TTYC_SMOL); 2469 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2470 tty_putcode(tty, TTYC_SMACS); 2471 2472 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2473 } 2474 2475 static void 2476 tty_colours(struct tty *tty, const struct grid_cell *gc) 2477 { 2478 struct grid_cell *tc = &tty->cell; 2479 int have_ax; 2480 2481 /* No changes? Nothing is necessary. */ 2482 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2483 return; 2484 2485 /* 2486 * Is either the default colour? This is handled specially because the 2487 * best solution might be to reset both colours to default, in which 2488 * case if only one is default need to fall onward to set the other 2489 * colour. 2490 */ 2491 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2492 /* 2493 * If don't have AX but do have op, send sgr0 (op can't 2494 * actually be used because it is sometimes the same as sgr0 2495 * and sometimes isn't). This resets both colours to default. 2496 * 2497 * Otherwise, try to set the default colour only as needed. 2498 */ 2499 have_ax = tty_term_flag(tty->term, TTYC_AX); 2500 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2501 tty_reset(tty); 2502 else { 2503 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2504 if (have_ax) 2505 tty_puts(tty, "\033[39m"); 2506 else if (tc->fg != 7) 2507 tty_putcode1(tty, TTYC_SETAF, 7); 2508 tc->fg = gc->fg; 2509 } 2510 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2511 if (have_ax) 2512 tty_puts(tty, "\033[49m"); 2513 else if (tc->bg != 0) 2514 tty_putcode1(tty, TTYC_SETAB, 0); 2515 tc->bg = gc->bg; 2516 } 2517 } 2518 } 2519 2520 /* Set the foreground colour. */ 2521 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2522 tty_colours_fg(tty, gc); 2523 2524 /* 2525 * Set the background colour. This must come after the foreground as 2526 * tty_colour_fg() can call tty_reset(). 2527 */ 2528 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2529 tty_colours_bg(tty, gc); 2530 2531 /* Set the underscore colour. */ 2532 if (gc->us != tc->us) 2533 tty_colours_us(tty, gc); 2534 } 2535 2536 static void 2537 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2538 struct grid_cell *gc) 2539 { 2540 u_char r, g, b; 2541 u_int colours; 2542 int c; 2543 2544 /* 2545 * Perform substitution if this pane has a palette. If the bright 2546 * attribute is set, use the bright entry in the palette by changing to 2547 * the aixterm colour. 2548 */ 2549 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2550 c = gc->fg; 2551 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 2552 c += 90; 2553 if ((c = colour_palette_get(palette, c)) != -1) 2554 gc->fg = c; 2555 } 2556 2557 /* Is this a 24-bit colour? */ 2558 if (gc->fg & COLOUR_FLAG_RGB) { 2559 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2560 if (tty->term->flags & TERM_RGBCOLOURS) 2561 return; 2562 colour_split_rgb(gc->fg, &r, &g, &b); 2563 gc->fg = colour_find_rgb(r, g, b); 2564 } 2565 2566 /* How many colours does this terminal have? */ 2567 if (tty->term->flags & TERM_256COLOURS) 2568 colours = 256; 2569 else 2570 colours = tty_term_number(tty->term, TTYC_COLORS); 2571 2572 /* Is this a 256-colour colour? */ 2573 if (gc->fg & COLOUR_FLAG_256) { 2574 /* And not a 256 colour mode? */ 2575 if (colours < 256) { 2576 gc->fg = colour_256to16(gc->fg); 2577 if (gc->fg & 8) { 2578 gc->fg &= 7; 2579 if (colours >= 16) 2580 gc->fg += 90; 2581 } 2582 } 2583 return; 2584 } 2585 2586 /* Is this an aixterm colour? */ 2587 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2588 gc->fg -= 90; 2589 gc->attr |= GRID_ATTR_BRIGHT; 2590 } 2591 } 2592 2593 static void 2594 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2595 struct grid_cell *gc) 2596 { 2597 u_char r, g, b; 2598 u_int colours; 2599 int c; 2600 2601 /* Perform substitution if this pane has a palette. */ 2602 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2603 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2604 gc->bg = c; 2605 } 2606 2607 /* Is this a 24-bit colour? */ 2608 if (gc->bg & COLOUR_FLAG_RGB) { 2609 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2610 if (tty->term->flags & TERM_RGBCOLOURS) 2611 return; 2612 colour_split_rgb(gc->bg, &r, &g, &b); 2613 gc->bg = colour_find_rgb(r, g, b); 2614 } 2615 2616 /* How many colours does this terminal have? */ 2617 if (tty->term->flags & TERM_256COLOURS) 2618 colours = 256; 2619 else 2620 colours = tty_term_number(tty->term, TTYC_COLORS); 2621 2622 /* Is this a 256-colour colour? */ 2623 if (gc->bg & COLOUR_FLAG_256) { 2624 /* 2625 * And not a 256 colour mode? Translate to 16-colour 2626 * palette. Bold background doesn't exist portably, so just 2627 * discard the bold bit if set. 2628 */ 2629 if (colours < 256) { 2630 gc->bg = colour_256to16(gc->bg); 2631 if (gc->bg & 8) { 2632 gc->bg &= 7; 2633 if (colours >= 16) 2634 gc->bg += 90; 2635 } 2636 } 2637 return; 2638 } 2639 2640 /* Is this an aixterm colour? */ 2641 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2642 gc->bg -= 90; 2643 } 2644 2645 static void 2646 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2647 struct grid_cell *gc) 2648 { 2649 int c; 2650 2651 /* Perform substitution if this pane has a palette. */ 2652 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2653 if ((c = colour_palette_get(palette, gc->us)) != -1) 2654 gc->us = c; 2655 } 2656 2657 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2658 if (gc->us & COLOUR_FLAG_256) 2659 gc->us = colour_256toRGB (gc->us); 2660 } 2661 2662 static void 2663 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2664 { 2665 struct grid_cell *tc = &tty->cell; 2666 char s[32]; 2667 2668 /* Is this a 24-bit or 256-colour colour? */ 2669 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2670 if (tty_try_colour(tty, gc->fg, "38") == 0) 2671 goto save; 2672 /* Should not get here, already converted in tty_check_fg. */ 2673 return; 2674 } 2675 2676 /* Is this an aixterm bright colour? */ 2677 if (gc->fg >= 90 && gc->fg <= 97) { 2678 if (tty->term->flags & TERM_256COLOURS) { 2679 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2680 tty_puts(tty, s); 2681 } else 2682 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2683 goto save; 2684 } 2685 2686 /* Otherwise set the foreground colour. */ 2687 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2688 2689 save: 2690 /* Save the new values in the terminal current cell. */ 2691 tc->fg = gc->fg; 2692 } 2693 2694 static void 2695 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2696 { 2697 struct grid_cell *tc = &tty->cell; 2698 char s[32]; 2699 2700 /* Is this a 24-bit or 256-colour colour? */ 2701 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2702 if (tty_try_colour(tty, gc->bg, "48") == 0) 2703 goto save; 2704 /* Should not get here, already converted in tty_check_bg. */ 2705 return; 2706 } 2707 2708 /* Is this an aixterm bright colour? */ 2709 if (gc->bg >= 90 && gc->bg <= 97) { 2710 if (tty->term->flags & TERM_256COLOURS) { 2711 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2712 tty_puts(tty, s); 2713 } else 2714 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2715 goto save; 2716 } 2717 2718 /* Otherwise set the background colour. */ 2719 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2720 2721 save: 2722 /* Save the new values in the terminal current cell. */ 2723 tc->bg = gc->bg; 2724 } 2725 2726 static void 2727 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2728 { 2729 struct grid_cell *tc = &tty->cell; 2730 u_int c; 2731 u_char r, g, b; 2732 2733 /* Clear underline colour. */ 2734 if (gc->us == 0) { 2735 tty_putcode(tty, TTYC_OL); 2736 goto save; 2737 } 2738 2739 /* Must be an RGB colour - this should never happen. */ 2740 if (~gc->us & COLOUR_FLAG_RGB) 2741 return; 2742 2743 /* 2744 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2745 * capability format. Calculate the colour value. 2746 */ 2747 colour_split_rgb(gc->us, &r, &g, &b); 2748 c = (65536 * r) + (256 * g) + b; 2749 2750 /* 2751 * Write the colour. Only use setal if the RGB flag is set because the 2752 * non-RGB version may be wrong. 2753 */ 2754 if (tty_term_has(tty->term, TTYC_SETULC)) 2755 tty_putcode1(tty, TTYC_SETULC, c); 2756 else if (tty_term_has(tty->term, TTYC_SETAL) && 2757 tty_term_has(tty->term, TTYC_RGB)) 2758 tty_putcode1(tty, TTYC_SETAL, c); 2759 2760 save: 2761 /* Save the new values in the terminal current cell. */ 2762 tc->us = gc->us; 2763 } 2764 2765 static int 2766 tty_try_colour(struct tty *tty, int colour, const char *type) 2767 { 2768 u_char r, g, b; 2769 2770 if (colour & COLOUR_FLAG_256) { 2771 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2772 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2773 else if (tty_term_has(tty->term, TTYC_SETAB)) 2774 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2775 return (0); 2776 } 2777 2778 if (colour & COLOUR_FLAG_RGB) { 2779 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2780 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2781 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2782 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2783 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2784 return (0); 2785 } 2786 2787 return (-1); 2788 } 2789 2790 static void 2791 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2792 { 2793 memcpy(gc, &grid_default_cell, sizeof *gc); 2794 gc->fg = wp->palette.fg; 2795 gc->bg = wp->palette.bg; 2796 } 2797 2798 void 2799 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2800 { 2801 struct options *oo = wp->options; 2802 struct format_tree *ft; 2803 2804 memcpy(gc, &grid_default_cell, sizeof *gc); 2805 2806 if (wp->flags & PANE_STYLECHANGED) { 2807 log_debug("%%%u: style changed", wp->id); 2808 wp->flags &= ~PANE_STYLECHANGED; 2809 2810 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2811 FORMAT_NOJOBS); 2812 format_defaults(ft, NULL, NULL, NULL, wp); 2813 tty_window_default_style(&wp->cached_active_gc, wp); 2814 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2815 tty_window_default_style(&wp->cached_gc, wp); 2816 style_add(&wp->cached_gc, oo, "window-style", ft); 2817 format_free(ft); 2818 } 2819 2820 if (gc->fg == 8) { 2821 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2822 gc->fg = wp->cached_active_gc.fg; 2823 else 2824 gc->fg = wp->cached_gc.fg; 2825 } 2826 2827 if (gc->bg == 8) { 2828 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2829 gc->bg = wp->cached_active_gc.bg; 2830 else 2831 gc->bg = wp->cached_gc.bg; 2832 } 2833 } 2834 2835 static void 2836 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2837 struct colour_palette *palette, u_int bg) 2838 { 2839 struct grid_cell gc; 2840 2841 memcpy(&gc, &grid_default_cell, sizeof gc); 2842 gc.bg = bg; 2843 tty_attributes(tty, &gc, defaults, palette); 2844 } 2845