1 /* $OpenBSD: tty.c,v 1.403 2021/08/17 11:20:13 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, TCIOFLUSH); 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 void 662 tty_update_mode(struct tty *tty, int mode, struct screen *s) 663 { 664 struct client *c = tty->client; 665 int changed; 666 enum screen_cursor_style cstyle = tty->cstyle; 667 668 if (tty->flags & TTY_NOCURSOR) 669 mode &= ~MODE_CURSOR; 670 671 changed = mode ^ tty->mode; 672 if (log_get_level() != 0 && changed != 0) { 673 log_debug("%s: current mode %s", c->name, 674 screen_mode_to_string(tty->mode)); 675 log_debug("%s: setting mode %s", c->name, 676 screen_mode_to_string(mode)); 677 } 678 679 if (s != NULL) { 680 if (strcmp(s->ccolour, tty->ccolour) != 0) 681 tty_force_cursor_colour(tty, s->ccolour); 682 cstyle = s->cstyle; 683 } 684 if (~mode & MODE_CURSOR) { 685 /* Cursor now off - set as invisible. */ 686 if (changed & MODE_CURSOR) 687 tty_putcode(tty, TTYC_CIVIS); 688 } else if ((changed & (MODE_CURSOR|MODE_BLINKING)) || 689 cstyle != tty->cstyle) { 690 /* 691 * Cursor now on, blinking flag changed or style changed. Start 692 * by setting the cursor to normal. 693 */ 694 tty_putcode(tty, TTYC_CNORM); 695 switch (cstyle) { 696 case SCREEN_CURSOR_DEFAULT: 697 /* 698 * If the old style wasn't default, then reset it to 699 * default. 700 */ 701 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 702 if (tty_term_has(tty->term, TTYC_SE)) 703 tty_putcode(tty, TTYC_SE); 704 else 705 tty_putcode1(tty, TTYC_SS, 0); 706 } 707 708 /* Set the cursor as very visible if necessary. */ 709 if (mode & MODE_BLINKING) 710 tty_putcode(tty, TTYC_CVVIS); 711 break; 712 case SCREEN_CURSOR_BLOCK: 713 /* 714 * Set style to either block blinking (1) or steady (2) 715 * if supported, otherwise just check the blinking 716 * flag. 717 */ 718 if (tty_term_has(tty->term, TTYC_SS)) { 719 if (mode & MODE_BLINKING) 720 tty_putcode1(tty, TTYC_SS, 1); 721 else 722 tty_putcode1(tty, TTYC_SS, 2); 723 } else if (mode & MODE_BLINKING) 724 tty_putcode(tty, TTYC_CVVIS); 725 break; 726 case SCREEN_CURSOR_UNDERLINE: 727 /* 728 * Set style to either underline blinking (3) or steady 729 * (4) if supported, otherwise just check the blinking 730 * flag. 731 */ 732 if (tty_term_has(tty->term, TTYC_SS)) { 733 if (mode & MODE_BLINKING) 734 tty_putcode1(tty, TTYC_SS, 3); 735 else 736 tty_putcode1(tty, TTYC_SS, 4); 737 } else if (mode & MODE_BLINKING) 738 tty_putcode(tty, TTYC_CVVIS); 739 break; 740 case SCREEN_CURSOR_BAR: 741 /* 742 * Set style to either bar blinking (5) or steady (6) 743 * if supported, otherwise just check the blinking 744 * flag. 745 */ 746 if (tty_term_has(tty->term, TTYC_SS)) { 747 if (mode & MODE_BLINKING) 748 tty_putcode1(tty, TTYC_SS, 5); 749 else 750 tty_putcode1(tty, TTYC_SS, 6); 751 } else if (mode & MODE_BLINKING) 752 tty_putcode(tty, TTYC_CVVIS); 753 break; 754 } 755 tty->cstyle = cstyle; 756 } 757 758 if ((changed & ALL_MOUSE_MODES) && 759 tty_term_has(tty->term, TTYC_KMOUS)) { 760 /* 761 * If the mouse modes have changed, clear any that are set and 762 * apply again. There are differences in how terminals track 763 * the various bits. 764 */ 765 if (tty->mode & MODE_MOUSE_SGR) 766 tty_puts(tty, "\033[?1006l"); 767 if (tty->mode & MODE_MOUSE_STANDARD) 768 tty_puts(tty, "\033[?1000l"); 769 if (tty->mode & MODE_MOUSE_BUTTON) 770 tty_puts(tty, "\033[?1002l"); 771 if (tty->mode & MODE_MOUSE_ALL) 772 tty_puts(tty, "\033[?1003l"); 773 if (mode & ALL_MOUSE_MODES) 774 tty_puts(tty, "\033[?1006h"); 775 if (mode & MODE_MOUSE_STANDARD) 776 tty_puts(tty, "\033[?1000h"); 777 if (mode & MODE_MOUSE_BUTTON) 778 tty_puts(tty, "\033[?1002h"); 779 if (mode & MODE_MOUSE_ALL) 780 tty_puts(tty, "\033[?1003h"); 781 } 782 if (changed & MODE_BRACKETPASTE) { 783 if (mode & MODE_BRACKETPASTE) 784 tty_putcode(tty, TTYC_ENBP); 785 else 786 tty_putcode(tty, TTYC_DSBP); 787 } 788 tty->mode = mode; 789 } 790 791 static void 792 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 793 enum tty_code_code code1, u_int n) 794 { 795 if (tty_term_has(tty->term, code)) 796 tty_putcode1(tty, code, n); 797 else { 798 while (n-- > 0) 799 tty_putcode(tty, code1); 800 } 801 } 802 803 static void 804 tty_repeat_space(struct tty *tty, u_int n) 805 { 806 static char s[500]; 807 808 if (*s != ' ') 809 memset(s, ' ', sizeof s); 810 811 while (n > sizeof s) { 812 tty_putn(tty, s, sizeof s, sizeof s); 813 n -= sizeof s; 814 } 815 if (n != 0) 816 tty_putn(tty, s, n, n); 817 } 818 819 /* Is this window bigger than the terminal? */ 820 int 821 tty_window_bigger(struct tty *tty) 822 { 823 struct client *c = tty->client; 824 struct window *w = c->session->curw->window; 825 826 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 827 } 828 829 /* What offset should this window be drawn at? */ 830 int 831 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 832 { 833 *ox = tty->oox; 834 *oy = tty->ooy; 835 *sx = tty->osx; 836 *sy = tty->osy; 837 838 return (tty->oflag); 839 } 840 841 /* What offset should this window be drawn at? */ 842 static int 843 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 844 { 845 struct client *c = tty->client; 846 struct window *w = c->session->curw->window; 847 struct window_pane *wp = server_client_get_pane(c); 848 u_int cx, cy, lines; 849 850 lines = status_line_size(c); 851 852 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 853 *ox = 0; 854 *oy = 0; 855 *sx = w->sx; 856 *sy = w->sy; 857 858 c->pan_window = NULL; 859 return (0); 860 } 861 862 *sx = tty->sx; 863 *sy = tty->sy - lines; 864 865 if (c->pan_window == w) { 866 if (*sx >= w->sx) 867 c->pan_ox = 0; 868 else if (c->pan_ox + *sx > w->sx) 869 c->pan_ox = w->sx - *sx; 870 *ox = c->pan_ox; 871 if (*sy >= w->sy) 872 c->pan_oy = 0; 873 else if (c->pan_oy + *sy > w->sy) 874 c->pan_oy = w->sy - *sy; 875 *oy = c->pan_oy; 876 return (1); 877 } 878 879 if (~wp->screen->mode & MODE_CURSOR) { 880 *ox = 0; 881 *oy = 0; 882 } else { 883 cx = wp->xoff + wp->screen->cx; 884 cy = wp->yoff + wp->screen->cy; 885 886 if (cx < *sx) 887 *ox = 0; 888 else if (cx > w->sx - *sx) 889 *ox = w->sx - *sx; 890 else 891 *ox = cx - *sx / 2; 892 893 if (cy < *sy) 894 *oy = 0; 895 else if (cy > w->sy - *sy) 896 *oy = w->sy - *sy; 897 else 898 *oy = cy - *sy / 2; 899 } 900 901 c->pan_window = NULL; 902 return (1); 903 } 904 905 /* Update stored offsets for a window and redraw if necessary. */ 906 void 907 tty_update_window_offset(struct window *w) 908 { 909 struct client *c; 910 911 TAILQ_FOREACH(c, &clients, entry) { 912 if (c->session != NULL && c->session->curw->window == w) 913 tty_update_client_offset(c); 914 } 915 } 916 917 /* Update stored offsets for a client and redraw if necessary. */ 918 void 919 tty_update_client_offset(struct client *c) 920 { 921 u_int ox, oy, sx, sy; 922 923 if (~c->flags & CLIENT_TERMINAL) 924 return; 925 926 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 927 if (ox == c->tty.oox && 928 oy == c->tty.ooy && 929 sx == c->tty.osx && 930 sy == c->tty.osy) 931 return; 932 933 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 934 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 935 ox, oy, sx, sy); 936 937 c->tty.oox = ox; 938 c->tty.ooy = oy; 939 c->tty.osx = sx; 940 c->tty.osy = sy; 941 942 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 943 } 944 945 /* 946 * Is the region large enough to be worth redrawing once later rather than 947 * probably several times now? Currently yes if it is more than 50% of the 948 * pane. 949 */ 950 static int 951 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 952 { 953 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 954 } 955 956 /* 957 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 958 * emulated. 959 */ 960 static int 961 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 962 { 963 if (tty_term_flag(tty->term, TTYC_BCE)) 964 return (0); 965 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 966 return (1); 967 return (0); 968 } 969 970 /* 971 * Redraw scroll region using data from screen (already updated). Used when 972 * CSR not supported, or window is a pane that doesn't take up the full 973 * width of the terminal. 974 */ 975 static void 976 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 977 { 978 struct client *c = tty->client; 979 u_int i; 980 981 /* 982 * If region is large, schedule a redraw. In most cases this is likely 983 * to be followed by some more scrolling. 984 */ 985 if (tty_large_region(tty, ctx)) { 986 log_debug("%s: %s large redraw", __func__, c->name); 987 ctx->redraw_cb(ctx); 988 return; 989 } 990 991 for (i = ctx->orupper; i <= ctx->orlower; i++) 992 tty_draw_pane(tty, ctx, i); 993 } 994 995 /* Is this position visible in the pane? */ 996 static int 997 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 998 u_int py, u_int nx, u_int ny) 999 { 1000 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1001 1002 if (!ctx->bigger) 1003 return (1); 1004 1005 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1006 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1007 return (0); 1008 return (1); 1009 } 1010 1011 /* Clamp line position to visible part of pane. */ 1012 static int 1013 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1014 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1015 { 1016 u_int xoff = ctx->rxoff + px; 1017 1018 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1019 return (0); 1020 *ry = ctx->yoff + py - ctx->woy; 1021 1022 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1023 /* All visible. */ 1024 *i = 0; 1025 *x = ctx->xoff + px - ctx->wox; 1026 *rx = nx; 1027 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1028 /* Both left and right not visible. */ 1029 *i = ctx->wox; 1030 *x = 0; 1031 *rx = ctx->wsx; 1032 } else if (xoff < ctx->wox) { 1033 /* Left not visible. */ 1034 *i = ctx->wox - (ctx->xoff + px); 1035 *x = 0; 1036 *rx = nx - *i; 1037 } else { 1038 /* Right not visible. */ 1039 *i = 0; 1040 *x = (ctx->xoff + px) - ctx->wox; 1041 *rx = ctx->wsx - *x; 1042 } 1043 if (*rx > nx) 1044 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1045 1046 return (1); 1047 } 1048 1049 /* Clear a line. */ 1050 static void 1051 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1052 u_int px, u_int nx, u_int bg) 1053 { 1054 struct client *c = tty->client; 1055 u_int i; 1056 1057 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1058 1059 /* Nothing to clear. */ 1060 if (nx == 0) 1061 return; 1062 1063 /* If genuine BCE is available, can try escape sequences. */ 1064 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1065 /* Off the end of the line, use EL if available. */ 1066 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1067 tty_cursor(tty, px, py); 1068 tty_putcode(tty, TTYC_EL); 1069 return; 1070 } 1071 1072 /* At the start of the line. Use EL1. */ 1073 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1074 tty_cursor(tty, px + nx - 1, py); 1075 tty_putcode(tty, TTYC_EL1); 1076 return; 1077 } 1078 1079 /* Section of line. Use ECH if possible. */ 1080 if (tty_term_has(tty->term, TTYC_ECH)) { 1081 tty_cursor(tty, px, py); 1082 tty_putcode1(tty, TTYC_ECH, nx); 1083 return; 1084 } 1085 } 1086 1087 /* 1088 * Couldn't use an escape sequence, use spaces. Clear only the visible 1089 * bit if there is an overlay. 1090 */ 1091 for (i = 0; i < nx; i++) { 1092 if (!tty_check_overlay(tty, px + i, py)) 1093 break; 1094 } 1095 tty_cursor(tty, px, py); 1096 tty_repeat_space(tty, i); 1097 for (; i < nx; i++) { 1098 if (tty_check_overlay(tty, px + i, py)) 1099 break; 1100 } 1101 tty_cursor(tty, px + i, py); 1102 tty_repeat_space(tty, nx - i); 1103 } 1104 1105 /* Clear a line, adjusting to visible part of pane. */ 1106 static void 1107 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1108 u_int px, u_int nx, u_int bg) 1109 { 1110 struct client *c = tty->client; 1111 u_int i, x, rx, ry; 1112 1113 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1114 1115 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1116 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1117 } 1118 1119 /* Clamp area position to visible part of pane. */ 1120 static int 1121 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1122 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1123 u_int *ry) 1124 { 1125 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1126 1127 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1128 return (0); 1129 1130 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1131 /* All visible. */ 1132 *i = 0; 1133 *x = ctx->xoff + px - ctx->wox; 1134 *rx = nx; 1135 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1136 /* Both left and right not visible. */ 1137 *i = ctx->wox; 1138 *x = 0; 1139 *rx = ctx->wsx; 1140 } else if (xoff < ctx->wox) { 1141 /* Left not visible. */ 1142 *i = ctx->wox - (ctx->xoff + px); 1143 *x = 0; 1144 *rx = nx - *i; 1145 } else { 1146 /* Right not visible. */ 1147 *i = 0; 1148 *x = (ctx->xoff + px) - ctx->wox; 1149 *rx = ctx->wsx - *x; 1150 } 1151 if (*rx > nx) 1152 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1153 1154 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1155 /* All visible. */ 1156 *j = 0; 1157 *y = ctx->yoff + py - ctx->woy; 1158 *ry = ny; 1159 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1160 /* Both top and bottom not visible. */ 1161 *j = ctx->woy; 1162 *y = 0; 1163 *ry = ctx->wsy; 1164 } else if (yoff < ctx->woy) { 1165 /* Top not visible. */ 1166 *j = ctx->woy - (ctx->yoff + py); 1167 *y = 0; 1168 *ry = ny - *j; 1169 } else { 1170 /* Bottom not visible. */ 1171 *j = 0; 1172 *y = (ctx->yoff + py) - ctx->woy; 1173 *ry = ctx->wsy - *y; 1174 } 1175 if (*ry > ny) 1176 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1177 1178 return (1); 1179 } 1180 1181 /* Clear an area, adjusting to visible part of pane. */ 1182 static void 1183 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1184 u_int ny, u_int px, u_int nx, u_int bg) 1185 { 1186 struct client *c = tty->client; 1187 u_int yy; 1188 char tmp[64]; 1189 1190 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1191 1192 /* Nothing to clear. */ 1193 if (nx == 0 || ny == 0) 1194 return; 1195 1196 /* If genuine BCE is available, can try escape sequences. */ 1197 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1198 /* Use ED if clearing off the bottom of the terminal. */ 1199 if (px == 0 && 1200 px + nx >= tty->sx && 1201 py + ny >= tty->sy && 1202 tty_term_has(tty->term, TTYC_ED)) { 1203 tty_cursor(tty, 0, py); 1204 tty_putcode(tty, TTYC_ED); 1205 return; 1206 } 1207 1208 /* 1209 * On VT420 compatible terminals we can use DECFRA if the 1210 * background colour isn't default (because it doesn't work 1211 * after SGR 0). 1212 */ 1213 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1214 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1215 py + 1, px + 1, py + ny, px + nx); 1216 tty_puts(tty, tmp); 1217 return; 1218 } 1219 1220 /* Full lines can be scrolled away to clear them. */ 1221 if (px == 0 && 1222 px + nx >= tty->sx && 1223 ny > 2 && 1224 tty_term_has(tty->term, TTYC_CSR) && 1225 tty_term_has(tty->term, TTYC_INDN)) { 1226 tty_region(tty, py, py + ny - 1); 1227 tty_margin_off(tty); 1228 tty_putcode1(tty, TTYC_INDN, ny); 1229 return; 1230 } 1231 1232 /* 1233 * If margins are supported, can just scroll the area off to 1234 * clear it. 1235 */ 1236 if (nx > 2 && 1237 ny > 2 && 1238 tty_term_has(tty->term, TTYC_CSR) && 1239 tty_use_margin(tty) && 1240 tty_term_has(tty->term, TTYC_INDN)) { 1241 tty_region(tty, py, py + ny - 1); 1242 tty_margin(tty, px, px + nx - 1); 1243 tty_putcode1(tty, TTYC_INDN, ny); 1244 return; 1245 } 1246 } 1247 1248 /* Couldn't use an escape sequence, loop over the lines. */ 1249 for (yy = py; yy < py + ny; yy++) 1250 tty_clear_line(tty, defaults, yy, px, nx, bg); 1251 } 1252 1253 /* Clear an area in a pane. */ 1254 static void 1255 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1256 u_int ny, u_int px, u_int nx, u_int bg) 1257 { 1258 u_int i, j, x, y, rx, ry; 1259 1260 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1261 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1262 } 1263 1264 static void 1265 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1266 { 1267 struct screen *s = ctx->s; 1268 u_int nx = ctx->sx, i, x, rx, ry; 1269 1270 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1271 1272 if (!ctx->bigger) { 1273 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1274 &ctx->defaults, ctx->palette); 1275 return; 1276 } 1277 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1278 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1279 ctx->palette); 1280 } 1281 } 1282 1283 static const struct grid_cell * 1284 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1285 { 1286 static struct grid_cell new; 1287 int c; 1288 1289 /* Characters less than 0x7f are always fine, no matter what. */ 1290 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1291 return (gc); 1292 1293 /* UTF-8 terminal and a UTF-8 character - fine. */ 1294 if (tty->client->flags & CLIENT_UTF8) 1295 return (gc); 1296 memcpy(&new, gc, sizeof new); 1297 1298 /* See if this can be mapped to an ACS character. */ 1299 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1300 if (c != -1) { 1301 utf8_set(&new.data, c); 1302 new.attr |= GRID_ATTR_CHARSET; 1303 return (&new); 1304 } 1305 1306 /* Replace by the right number of underscores. */ 1307 new.data.size = gc->data.width; 1308 if (new.data.size > UTF8_SIZE) 1309 new.data.size = UTF8_SIZE; 1310 memset(new.data.data, '_', new.data.size); 1311 return (&new); 1312 } 1313 1314 static int 1315 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1316 { 1317 struct client *c = tty->client; 1318 1319 if (c->overlay_check == NULL) 1320 return (1); 1321 return (c->overlay_check(c, c->overlay_data, px, py)); 1322 } 1323 1324 void 1325 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1326 u_int atx, u_int aty, const struct grid_cell *defaults, 1327 struct colour_palette *palette) 1328 { 1329 struct grid *gd = s->grid; 1330 struct grid_cell gc, last; 1331 const struct grid_cell *gcp; 1332 struct grid_line *gl; 1333 struct client *c = tty->client; 1334 u_int i, j, ux, sx, width, hidden; 1335 int flags, cleared = 0, wrapped = 0; 1336 char buf[512]; 1337 size_t len; 1338 u_int cellsize; 1339 1340 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1341 px, py, nx, atx, aty); 1342 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1343 defaults->bg); 1344 1345 /* 1346 * py is the line in the screen to draw. 1347 * px is the start x and nx is the width to draw. 1348 * atx,aty is the line on the terminal to draw it. 1349 */ 1350 1351 flags = (tty->flags & TTY_NOCURSOR); 1352 tty->flags |= TTY_NOCURSOR; 1353 tty_update_mode(tty, tty->mode, s); 1354 1355 tty_region_off(tty); 1356 tty_margin_off(tty); 1357 1358 /* 1359 * Clamp the width to cellsize - note this is not cellused, because 1360 * there may be empty background cells after it (from BCE). 1361 */ 1362 sx = screen_size_x(s); 1363 if (nx > sx) 1364 nx = sx; 1365 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1366 if (sx > cellsize) 1367 sx = cellsize; 1368 if (sx > tty->sx) 1369 sx = tty->sx; 1370 if (sx > nx) 1371 sx = nx; 1372 ux = 0; 1373 1374 if (py == 0) 1375 gl = NULL; 1376 else 1377 gl = grid_get_line(gd, gd->hsize + py - 1); 1378 if (gl == NULL || 1379 (~gl->flags & GRID_LINE_WRAPPED) || 1380 atx != 0 || 1381 tty->cx < tty->sx || 1382 nx < tty->sx) { 1383 if (nx < tty->sx && 1384 atx == 0 && 1385 px + sx != nx && 1386 tty_term_has(tty->term, TTYC_EL1) && 1387 !tty_fake_bce(tty, defaults, 8) && 1388 c->overlay_check == NULL) { 1389 tty_default_attributes(tty, defaults, palette, 8); 1390 tty_cursor(tty, nx - 1, aty); 1391 tty_putcode(tty, TTYC_EL1); 1392 cleared = 1; 1393 } 1394 } else { 1395 log_debug("%s: wrapped line %u", __func__, aty); 1396 wrapped = 1; 1397 } 1398 1399 memcpy(&last, &grid_default_cell, sizeof last); 1400 len = 0; 1401 width = 0; 1402 1403 for (i = 0; i < sx; i++) { 1404 grid_view_get_cell(gd, px + i, py, &gc); 1405 gcp = tty_check_codeset(tty, &gc); 1406 if (len != 0 && 1407 (!tty_check_overlay(tty, atx + ux + width, aty) || 1408 (gcp->attr & GRID_ATTR_CHARSET) || 1409 gcp->flags != last.flags || 1410 gcp->attr != last.attr || 1411 gcp->fg != last.fg || 1412 gcp->bg != last.bg || 1413 gcp->us != last.us || 1414 ux + width + gcp->data.width > nx || 1415 (sizeof buf) - len < gcp->data.size)) { 1416 tty_attributes(tty, &last, defaults, palette); 1417 if (last.flags & GRID_FLAG_CLEARED) { 1418 log_debug("%s: %zu cleared", __func__, len); 1419 tty_clear_line(tty, defaults, aty, atx + ux, 1420 width, last.bg); 1421 } else { 1422 if (!wrapped || atx != 0 || ux != 0) 1423 tty_cursor(tty, atx + ux, aty); 1424 tty_putn(tty, buf, len, width); 1425 } 1426 ux += width; 1427 1428 len = 0; 1429 width = 0; 1430 wrapped = 0; 1431 } 1432 1433 if (gcp->flags & GRID_FLAG_SELECTED) 1434 screen_select_cell(s, &last, gcp); 1435 else 1436 memcpy(&last, gcp, sizeof last); 1437 1438 hidden = 0; 1439 for (j = 0; j < gcp->data.width; j++) { 1440 if (!tty_check_overlay(tty, atx + ux + j, aty)) 1441 hidden++; 1442 } 1443 if (hidden != 0 && hidden == gcp->data.width) { 1444 if (~gcp->flags & GRID_FLAG_PADDING) 1445 ux += gcp->data.width; 1446 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1447 if (~gcp->flags & GRID_FLAG_PADDING) { 1448 tty_attributes(tty, &last, defaults, palette); 1449 tty_cursor(tty, atx + ux, aty); 1450 for (j = 0; j < gcp->data.width; j++) { 1451 if (ux > nx) 1452 break; 1453 if (tty_check_overlay(tty, atx + ux, 1454 aty)) 1455 tty_putc(tty, ' '); 1456 else { 1457 tty_cursor(tty, atx + ux + 1, 1458 aty); 1459 } 1460 ux++; 1461 } 1462 } 1463 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1464 tty_attributes(tty, &last, defaults, palette); 1465 tty_cursor(tty, atx + ux, aty); 1466 for (j = 0; j < gcp->data.size; j++) 1467 tty_putc(tty, gcp->data.data[j]); 1468 ux += gcp->data.width; 1469 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1470 memcpy(buf + len, gcp->data.data, gcp->data.size); 1471 len += gcp->data.size; 1472 width += gcp->data.width; 1473 } 1474 } 1475 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1476 tty_attributes(tty, &last, defaults, palette); 1477 if (last.flags & GRID_FLAG_CLEARED) { 1478 log_debug("%s: %zu cleared (end)", __func__, len); 1479 tty_clear_line(tty, defaults, aty, atx + ux, width, 1480 last.bg); 1481 } else { 1482 if (!wrapped || atx != 0 || ux != 0) 1483 tty_cursor(tty, atx + ux, aty); 1484 tty_putn(tty, buf, len, width); 1485 } 1486 ux += width; 1487 } 1488 1489 if (!cleared && ux < nx) { 1490 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1491 nx - ux, len); 1492 tty_default_attributes(tty, defaults, palette, 8); 1493 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1494 } 1495 1496 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1497 tty_update_mode(tty, tty->mode, s); 1498 } 1499 1500 void 1501 tty_sync_start(struct tty *tty) 1502 { 1503 if (tty->flags & TTY_BLOCK) 1504 return; 1505 if (tty->flags & TTY_SYNCING) 1506 return; 1507 tty->flags |= TTY_SYNCING; 1508 1509 if (tty_term_has(tty->term, TTYC_SYNC)) { 1510 log_debug("%s sync start", tty->client->name); 1511 tty_putcode1(tty, TTYC_SYNC, 1); 1512 } 1513 } 1514 1515 void 1516 tty_sync_end(struct tty *tty) 1517 { 1518 if (tty->flags & TTY_BLOCK) 1519 return; 1520 if (~tty->flags & TTY_SYNCING) 1521 return; 1522 tty->flags &= ~TTY_SYNCING; 1523 1524 if (tty_term_has(tty->term, TTYC_SYNC)) { 1525 log_debug("%s sync end", tty->client->name); 1526 tty_putcode1(tty, TTYC_SYNC, 2); 1527 } 1528 } 1529 1530 static int 1531 tty_client_ready(struct client *c) 1532 { 1533 if (c->session == NULL || c->tty.term == NULL) 1534 return (0); 1535 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1536 return (0); 1537 if (c->tty.flags & TTY_FREEZE) 1538 return (0); 1539 return (1); 1540 } 1541 1542 void 1543 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1544 struct tty_ctx *ctx) 1545 { 1546 struct client *c; 1547 int state; 1548 1549 if (ctx->set_client_cb == NULL) 1550 return; 1551 TAILQ_FOREACH(c, &clients, entry) { 1552 if (!tty_client_ready(c)) 1553 continue; 1554 state = ctx->set_client_cb(ctx, c); 1555 if (state == -1) 1556 break; 1557 if (state == 0) 1558 continue; 1559 cmdfn(&c->tty, ctx); 1560 } 1561 } 1562 1563 void 1564 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1565 { 1566 struct client *c = tty->client; 1567 1568 if (ctx->bigger || 1569 !tty_full_width(tty, ctx) || 1570 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1571 (!tty_term_has(tty->term, TTYC_ICH) && 1572 !tty_term_has(tty->term, TTYC_ICH1)) || 1573 c->overlay_check != NULL) { 1574 tty_draw_pane(tty, ctx, ctx->ocy); 1575 return; 1576 } 1577 1578 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1579 1580 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1581 1582 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1583 } 1584 1585 void 1586 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1587 { 1588 struct client *c = tty->client; 1589 1590 if (ctx->bigger || 1591 !tty_full_width(tty, ctx) || 1592 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1593 (!tty_term_has(tty->term, TTYC_DCH) && 1594 !tty_term_has(tty->term, TTYC_DCH1)) || 1595 c->overlay_check != NULL) { 1596 tty_draw_pane(tty, ctx, ctx->ocy); 1597 return; 1598 } 1599 1600 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1601 1602 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1603 1604 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1605 } 1606 1607 void 1608 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1609 { 1610 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1611 1612 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1613 } 1614 1615 void 1616 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1617 { 1618 struct client *c = tty->client; 1619 1620 if (ctx->bigger || 1621 !tty_full_width(tty, ctx) || 1622 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1623 !tty_term_has(tty->term, TTYC_CSR) || 1624 !tty_term_has(tty->term, TTYC_IL1) || 1625 ctx->sx == 1 || 1626 ctx->sy == 1 || 1627 c->overlay_check != NULL) { 1628 tty_redraw_region(tty, ctx); 1629 return; 1630 } 1631 1632 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1633 1634 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1635 tty_margin_off(tty); 1636 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1637 1638 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1639 tty->cx = tty->cy = UINT_MAX; 1640 } 1641 1642 void 1643 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1644 { 1645 struct client *c = tty->client; 1646 1647 if (ctx->bigger || 1648 !tty_full_width(tty, ctx) || 1649 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1650 !tty_term_has(tty->term, TTYC_CSR) || 1651 !tty_term_has(tty->term, TTYC_DL1) || 1652 ctx->sx == 1 || 1653 ctx->sy == 1 || 1654 c->overlay_check != NULL) { 1655 tty_redraw_region(tty, ctx); 1656 return; 1657 } 1658 1659 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1660 1661 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1662 tty_margin_off(tty); 1663 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1664 1665 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1666 tty->cx = tty->cy = UINT_MAX; 1667 } 1668 1669 void 1670 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1671 { 1672 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1673 1674 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1675 } 1676 1677 void 1678 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1679 { 1680 u_int nx = ctx->sx - ctx->ocx; 1681 1682 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1683 1684 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1685 } 1686 1687 void 1688 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1689 { 1690 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1691 1692 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1693 } 1694 1695 void 1696 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1697 { 1698 struct client *c = tty->client; 1699 1700 if (ctx->ocy != ctx->orupper) 1701 return; 1702 1703 if (ctx->bigger || 1704 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1705 tty_fake_bce(tty, &ctx->defaults, 8) || 1706 !tty_term_has(tty->term, TTYC_CSR) || 1707 (!tty_term_has(tty->term, TTYC_RI) && 1708 !tty_term_has(tty->term, TTYC_RIN)) || 1709 ctx->sx == 1 || 1710 ctx->sy == 1 || 1711 c->overlay_check != NULL) { 1712 tty_redraw_region(tty, ctx); 1713 return; 1714 } 1715 1716 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1717 1718 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1719 tty_margin_pane(tty, ctx); 1720 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1721 1722 if (tty_term_has(tty->term, TTYC_RI)) 1723 tty_putcode(tty, TTYC_RI); 1724 else 1725 tty_putcode1(tty, TTYC_RIN, 1); 1726 } 1727 1728 void 1729 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1730 { 1731 struct client *c = tty->client; 1732 1733 if (ctx->ocy != ctx->orlower) 1734 return; 1735 1736 if (ctx->bigger || 1737 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1738 tty_fake_bce(tty, &ctx->defaults, 8) || 1739 !tty_term_has(tty->term, TTYC_CSR) || 1740 ctx->sx == 1 || 1741 ctx->sy == 1 || 1742 c->overlay_check != NULL) { 1743 tty_redraw_region(tty, ctx); 1744 return; 1745 } 1746 1747 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1748 1749 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1750 tty_margin_pane(tty, ctx); 1751 1752 /* 1753 * If we want to wrap a pane while using margins, the cursor needs to 1754 * be exactly on the right of the region. If the cursor is entirely off 1755 * the edge - move it back to the right. Some terminals are funny about 1756 * this and insert extra spaces, so only use the right if margins are 1757 * enabled. 1758 */ 1759 if (ctx->xoff + ctx->ocx > tty->rright) { 1760 if (!tty_use_margin(tty)) 1761 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1762 else 1763 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1764 } else 1765 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1766 1767 tty_putc(tty, '\n'); 1768 } 1769 1770 void 1771 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1772 { 1773 struct client *c = tty->client; 1774 u_int i; 1775 1776 if (ctx->bigger || 1777 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1778 tty_fake_bce(tty, &ctx->defaults, 8) || 1779 !tty_term_has(tty->term, TTYC_CSR) || 1780 ctx->sx == 1 || 1781 ctx->sy == 1 || 1782 c->overlay_check != NULL) { 1783 tty_redraw_region(tty, ctx); 1784 return; 1785 } 1786 1787 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1788 1789 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1790 tty_margin_pane(tty, ctx); 1791 1792 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1793 if (!tty_use_margin(tty)) 1794 tty_cursor(tty, 0, tty->rlower); 1795 else 1796 tty_cursor(tty, tty->rright, tty->rlower); 1797 for (i = 0; i < ctx->num; i++) 1798 tty_putc(tty, '\n'); 1799 } else { 1800 if (tty->cy == UINT_MAX) 1801 tty_cursor(tty, 0, 0); 1802 else 1803 tty_cursor(tty, 0, tty->cy); 1804 tty_putcode1(tty, TTYC_INDN, ctx->num); 1805 } 1806 } 1807 1808 void 1809 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1810 { 1811 u_int i; 1812 struct client *c = tty->client; 1813 1814 if (ctx->bigger || 1815 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1816 tty_fake_bce(tty, &ctx->defaults, 8) || 1817 !tty_term_has(tty->term, TTYC_CSR) || 1818 (!tty_term_has(tty->term, TTYC_RI) && 1819 !tty_term_has(tty->term, TTYC_RIN)) || 1820 ctx->sx == 1 || 1821 ctx->sy == 1 || 1822 c->overlay_check != NULL) { 1823 tty_redraw_region(tty, ctx); 1824 return; 1825 } 1826 1827 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1828 1829 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1830 tty_margin_pane(tty, ctx); 1831 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1832 1833 if (tty_term_has(tty->term, TTYC_RIN)) 1834 tty_putcode1(tty, TTYC_RIN, ctx->num); 1835 else { 1836 for (i = 0; i < ctx->num; i++) 1837 tty_putcode(tty, TTYC_RI); 1838 } 1839 } 1840 1841 void 1842 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1843 { 1844 u_int px, py, nx, ny; 1845 1846 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1847 1848 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1849 tty_margin_off(tty); 1850 1851 px = 0; 1852 nx = ctx->sx; 1853 py = ctx->ocy + 1; 1854 ny = ctx->sy - ctx->ocy - 1; 1855 1856 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1857 1858 px = ctx->ocx; 1859 nx = ctx->sx - ctx->ocx; 1860 py = ctx->ocy; 1861 1862 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1863 } 1864 1865 void 1866 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1867 { 1868 u_int px, py, nx, ny; 1869 1870 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1871 1872 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1873 tty_margin_off(tty); 1874 1875 px = 0; 1876 nx = ctx->sx; 1877 py = 0; 1878 ny = ctx->ocy; 1879 1880 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1881 1882 px = 0; 1883 nx = ctx->ocx + 1; 1884 py = ctx->ocy; 1885 1886 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1887 } 1888 1889 void 1890 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1891 { 1892 u_int px, py, nx, ny; 1893 1894 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg); 1895 1896 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1897 tty_margin_off(tty); 1898 1899 px = 0; 1900 nx = ctx->sx; 1901 py = 0; 1902 ny = ctx->sy; 1903 1904 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1905 } 1906 1907 void 1908 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1909 { 1910 u_int i, j; 1911 1912 if (ctx->bigger) { 1913 ctx->redraw_cb(ctx); 1914 return; 1915 } 1916 1917 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette); 1918 1919 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1920 tty_margin_off(tty); 1921 1922 for (j = 0; j < ctx->sy; j++) { 1923 tty_cursor_pane(tty, ctx, 0, j); 1924 for (i = 0; i < ctx->sx; i++) 1925 tty_putc(tty, 'E'); 1926 } 1927 } 1928 1929 void 1930 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1931 { 1932 const struct grid_cell *gcp = ctx->cell; 1933 struct screen *s = ctx->s; 1934 u_int i, px, py; 1935 1936 px = ctx->xoff + ctx->ocx - ctx->wox; 1937 py = ctx->yoff + ctx->ocy - ctx->woy; 1938 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 1939 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 1940 return; 1941 1942 /* Handle partially obstructed wide characters. */ 1943 if (gcp->data.width > 1) { 1944 for (i = 0; i < gcp->data.width; i++) { 1945 if (!tty_check_overlay(tty, px + i, py)) { 1946 tty_draw_line(tty, s, s->cx, s->cy, 1947 gcp->data.width, px, py, &ctx->defaults, 1948 ctx->palette); 1949 return; 1950 } 1951 } 1952 } 1953 1954 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 1955 ctx->ocy == ctx->orlower && 1956 tty_full_width(tty, ctx)) 1957 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1958 1959 tty_margin_off(tty); 1960 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1961 1962 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette); 1963 } 1964 1965 void 1966 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1967 { 1968 u_int i, hide = 0; 1969 1970 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 1971 return; 1972 1973 if (ctx->bigger && 1974 (ctx->xoff + ctx->ocx < ctx->wox || 1975 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 1976 if (!ctx->wrapped || 1977 !tty_full_width(tty, ctx) || 1978 (tty->term->flags & TERM_NOAM) || 1979 ctx->xoff + ctx->ocx != 0 || 1980 ctx->yoff + ctx->ocy != tty->cy + 1 || 1981 tty->cx < tty->sx || 1982 tty->cy == tty->rlower) 1983 tty_draw_pane(tty, ctx, ctx->ocy); 1984 else 1985 ctx->redraw_cb(ctx); 1986 return; 1987 } 1988 1989 tty_margin_off(tty); 1990 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1991 1992 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette); 1993 for (i = 0; i < ctx->num; i++) { 1994 if (!tty_check_overlay(tty, tty->cx + i, tty->cy)) 1995 break; 1996 } 1997 tty_putn(tty, ctx->ptr, i, i); 1998 for (; i < ctx->num; i++) { 1999 if (tty_check_overlay(tty, tty->cx + hide, tty->cy)) 2000 break; 2001 hide++; 2002 } 2003 tty_cursor(tty, tty->cx + hide, tty->cy); 2004 tty_putn(tty, (char *)ctx->ptr + i, ctx->num - i, ctx->num - i); 2005 } 2006 2007 void 2008 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2009 { 2010 tty_set_selection(tty, ctx->ptr, ctx->num); 2011 } 2012 2013 void 2014 tty_set_selection(struct tty *tty, const char *buf, size_t len) 2015 { 2016 char *encoded; 2017 size_t size; 2018 2019 if (~tty->flags & TTY_STARTED) 2020 return; 2021 if (!tty_term_has(tty->term, TTYC_MS)) 2022 return; 2023 2024 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2025 encoded = xmalloc(size); 2026 2027 b64_ntop(buf, len, encoded, size); 2028 tty_putcode_ptr2(tty, TTYC_MS, "", encoded); 2029 tty->client->redraw = EVBUFFER_LENGTH(tty->out); 2030 2031 free(encoded); 2032 } 2033 2034 void 2035 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2036 { 2037 tty_add(tty, ctx->ptr, ctx->num); 2038 tty_invalidate(tty); 2039 } 2040 2041 void 2042 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2043 { 2044 if (ctx->num == 0x11) { 2045 /* 2046 * This is an overlay and a command that moves the cursor so 2047 * start synchronized updates. 2048 */ 2049 tty_sync_start(tty); 2050 } else if (~ctx->num & 0x10) { 2051 /* 2052 * This is a pane. If there is an overlay, always start; 2053 * otherwise, only if requested. 2054 */ 2055 if (ctx->num || tty->client->overlay_draw != NULL) 2056 tty_sync_start(tty); 2057 } 2058 } 2059 2060 void 2061 tty_cell(struct tty *tty, const struct grid_cell *gc, 2062 const struct grid_cell *defaults, struct colour_palette *palette) 2063 { 2064 const struct grid_cell *gcp; 2065 2066 /* Skip last character if terminal is stupid. */ 2067 if ((tty->term->flags & TERM_NOAM) && 2068 tty->cy == tty->sy - 1 && 2069 tty->cx == tty->sx - 1) 2070 return; 2071 2072 /* If this is a padding character, do nothing. */ 2073 if (gc->flags & GRID_FLAG_PADDING) 2074 return; 2075 2076 /* Check the output codeset and apply attributes. */ 2077 gcp = tty_check_codeset(tty, gc); 2078 tty_attributes(tty, gcp, defaults, palette); 2079 2080 /* If it is a single character, write with putc to handle ACS. */ 2081 if (gcp->data.size == 1) { 2082 tty_attributes(tty, gcp, defaults, palette); 2083 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2084 return; 2085 tty_putc(tty, *gcp->data.data); 2086 return; 2087 } 2088 2089 /* Write the data. */ 2090 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2091 } 2092 2093 void 2094 tty_reset(struct tty *tty) 2095 { 2096 struct grid_cell *gc = &tty->cell; 2097 2098 if (!grid_cells_equal(gc, &grid_default_cell)) { 2099 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2100 tty_putcode(tty, TTYC_RMACS); 2101 tty_putcode(tty, TTYC_SGR0); 2102 memcpy(gc, &grid_default_cell, sizeof *gc); 2103 } 2104 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2105 } 2106 2107 static void 2108 tty_invalidate(struct tty *tty) 2109 { 2110 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2111 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2112 2113 tty->cx = tty->cy = UINT_MAX; 2114 tty->rupper = tty->rleft = UINT_MAX; 2115 tty->rlower = tty->rright = UINT_MAX; 2116 2117 if (tty->flags & TTY_STARTED) { 2118 if (tty_use_margin(tty)) 2119 tty_putcode(tty, TTYC_ENMG); 2120 tty_putcode(tty, TTYC_SGR0); 2121 2122 tty->mode = ALL_MODES; 2123 tty_update_mode(tty, MODE_CURSOR, NULL); 2124 2125 tty_cursor(tty, 0, 0); 2126 tty_region_off(tty); 2127 tty_margin_off(tty); 2128 } else 2129 tty->mode = MODE_CURSOR; 2130 } 2131 2132 /* Turn off margin. */ 2133 void 2134 tty_region_off(struct tty *tty) 2135 { 2136 tty_region(tty, 0, tty->sy - 1); 2137 } 2138 2139 /* Set region inside pane. */ 2140 static void 2141 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2142 u_int rlower) 2143 { 2144 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2145 ctx->yoff + rlower - ctx->woy); 2146 } 2147 2148 /* Set region at absolute position. */ 2149 static void 2150 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2151 { 2152 if (tty->rlower == rlower && tty->rupper == rupper) 2153 return; 2154 if (!tty_term_has(tty->term, TTYC_CSR)) 2155 return; 2156 2157 tty->rupper = rupper; 2158 tty->rlower = rlower; 2159 2160 /* 2161 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2162 * 0,0 if it is beyond the last column (they do not reset their wrap 2163 * flag so further output causes a line feed). As a workaround, do an 2164 * explicit move to 0 first. 2165 */ 2166 if (tty->cx >= tty->sx) { 2167 if (tty->cy == UINT_MAX) 2168 tty_cursor(tty, 0, 0); 2169 else 2170 tty_cursor(tty, 0, tty->cy); 2171 } 2172 2173 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2174 tty->cx = tty->cy = UINT_MAX; 2175 } 2176 2177 /* Turn off margin. */ 2178 void 2179 tty_margin_off(struct tty *tty) 2180 { 2181 tty_margin(tty, 0, tty->sx - 1); 2182 } 2183 2184 /* Set margin inside pane. */ 2185 static void 2186 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2187 { 2188 tty_margin(tty, ctx->xoff - ctx->wox, 2189 ctx->xoff + ctx->sx - 1 - ctx->wox); 2190 } 2191 2192 /* Set margin at absolute position. */ 2193 static void 2194 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2195 { 2196 if (!tty_use_margin(tty)) 2197 return; 2198 if (tty->rleft == rleft && tty->rright == rright) 2199 return; 2200 2201 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2202 2203 tty->rleft = rleft; 2204 tty->rright = rright; 2205 2206 if (rleft == 0 && rright == tty->sx - 1) 2207 tty_putcode(tty, TTYC_CLMG); 2208 else 2209 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2210 tty->cx = tty->cy = UINT_MAX; 2211 } 2212 2213 /* 2214 * Move the cursor, unless it would wrap itself when the next character is 2215 * printed. 2216 */ 2217 static void 2218 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2219 u_int cx, u_int cy) 2220 { 2221 if (!ctx->wrapped || 2222 !tty_full_width(tty, ctx) || 2223 (tty->term->flags & TERM_NOAM) || 2224 ctx->xoff + cx != 0 || 2225 ctx->yoff + cy != tty->cy + 1 || 2226 tty->cx < tty->sx || 2227 tty->cy == tty->rlower) 2228 tty_cursor_pane(tty, ctx, cx, cy); 2229 else 2230 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2231 } 2232 2233 /* Move cursor inside pane. */ 2234 static void 2235 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2236 { 2237 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2238 } 2239 2240 /* Move cursor to absolute position. */ 2241 void 2242 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2243 { 2244 struct tty_term *term = tty->term; 2245 u_int thisx, thisy; 2246 int change; 2247 2248 if (tty->flags & TTY_BLOCK) 2249 return; 2250 2251 if (cx > tty->sx - 1) 2252 cx = tty->sx - 1; 2253 2254 thisx = tty->cx; 2255 thisy = tty->cy; 2256 2257 /* No change. */ 2258 if (cx == thisx && cy == thisy) 2259 return; 2260 2261 /* Very end of the line, just use absolute movement. */ 2262 if (thisx > tty->sx - 1) 2263 goto absolute; 2264 2265 /* Move to home position (0, 0). */ 2266 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2267 tty_putcode(tty, TTYC_HOME); 2268 goto out; 2269 } 2270 2271 /* Zero on the next line. */ 2272 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2273 (!tty_use_margin(tty) || tty->rleft == 0)) { 2274 tty_putc(tty, '\r'); 2275 tty_putc(tty, '\n'); 2276 goto out; 2277 } 2278 2279 /* Moving column or row. */ 2280 if (cy == thisy) { 2281 /* 2282 * Moving column only, row staying the same. 2283 */ 2284 2285 /* To left edge. */ 2286 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2287 tty_putc(tty, '\r'); 2288 goto out; 2289 } 2290 2291 /* One to the left. */ 2292 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2293 tty_putcode(tty, TTYC_CUB1); 2294 goto out; 2295 } 2296 2297 /* One to the right. */ 2298 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2299 tty_putcode(tty, TTYC_CUF1); 2300 goto out; 2301 } 2302 2303 /* Calculate difference. */ 2304 change = thisx - cx; /* +ve left, -ve right */ 2305 2306 /* 2307 * Use HPA if change is larger than absolute, otherwise move 2308 * the cursor with CUB/CUF. 2309 */ 2310 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2311 tty_putcode1(tty, TTYC_HPA, cx); 2312 goto out; 2313 } else if (change > 0 && 2314 tty_term_has(term, TTYC_CUB) && 2315 !tty_use_margin(tty)) { 2316 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2317 tty_putcode(tty, TTYC_CUB1); 2318 tty_putcode(tty, TTYC_CUB1); 2319 goto out; 2320 } 2321 tty_putcode1(tty, TTYC_CUB, change); 2322 goto out; 2323 } else if (change < 0 && 2324 tty_term_has(term, TTYC_CUF) && 2325 !tty_use_margin(tty)) { 2326 tty_putcode1(tty, TTYC_CUF, -change); 2327 goto out; 2328 } 2329 } else if (cx == thisx) { 2330 /* 2331 * Moving row only, column staying the same. 2332 */ 2333 2334 /* One above. */ 2335 if (thisy != tty->rupper && 2336 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2337 tty_putcode(tty, TTYC_CUU1); 2338 goto out; 2339 } 2340 2341 /* One below. */ 2342 if (thisy != tty->rlower && 2343 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2344 tty_putcode(tty, TTYC_CUD1); 2345 goto out; 2346 } 2347 2348 /* Calculate difference. */ 2349 change = thisy - cy; /* +ve up, -ve down */ 2350 2351 /* 2352 * Try to use VPA if change is larger than absolute or if this 2353 * change would cross the scroll region, otherwise use CUU/CUD. 2354 */ 2355 if ((u_int) abs(change) > cy || 2356 (change < 0 && cy - change > tty->rlower) || 2357 (change > 0 && cy - change < tty->rupper)) { 2358 if (tty_term_has(term, TTYC_VPA)) { 2359 tty_putcode1(tty, TTYC_VPA, cy); 2360 goto out; 2361 } 2362 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2363 tty_putcode1(tty, TTYC_CUU, change); 2364 goto out; 2365 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2366 tty_putcode1(tty, TTYC_CUD, -change); 2367 goto out; 2368 } 2369 } 2370 2371 absolute: 2372 /* Absolute movement. */ 2373 tty_putcode2(tty, TTYC_CUP, cy, cx); 2374 2375 out: 2376 tty->cx = cx; 2377 tty->cy = cy; 2378 } 2379 2380 void 2381 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2382 const struct grid_cell *defaults, struct colour_palette *palette) 2383 { 2384 struct grid_cell *tc = &tty->cell, gc2; 2385 int changed; 2386 2387 /* Copy cell and update default colours. */ 2388 memcpy(&gc2, gc, sizeof gc2); 2389 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2390 if (gc2.fg == 8) 2391 gc2.fg = defaults->fg; 2392 if (gc2.bg == 8) 2393 gc2.bg = defaults->bg; 2394 } 2395 2396 /* Ignore cell if it is the same as the last one. */ 2397 if (gc2.attr == tty->last_cell.attr && 2398 gc2.fg == tty->last_cell.fg && 2399 gc2.bg == tty->last_cell.bg && 2400 gc2.us == tty->last_cell.us) 2401 return; 2402 2403 /* 2404 * If no setab, try to use the reverse attribute as a best-effort for a 2405 * non-default background. This is a bit of a hack but it doesn't do 2406 * any serious harm and makes a couple of applications happier. 2407 */ 2408 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2409 if (gc2.attr & GRID_ATTR_REVERSE) { 2410 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2411 gc2.attr &= ~GRID_ATTR_REVERSE; 2412 } else { 2413 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2414 gc2.attr |= GRID_ATTR_REVERSE; 2415 } 2416 } 2417 2418 /* Fix up the colours if necessary. */ 2419 tty_check_fg(tty, palette, &gc2); 2420 tty_check_bg(tty, palette, &gc2); 2421 tty_check_us(tty, palette, &gc2); 2422 2423 /* 2424 * If any bits are being cleared or the underline colour is now default, 2425 * reset everything. 2426 */ 2427 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2428 tty_reset(tty); 2429 2430 /* 2431 * Set the colours. This may call tty_reset() (so it comes next) and 2432 * may add to (NOT remove) the desired attributes. 2433 */ 2434 tty_colours(tty, &gc2); 2435 2436 /* Filter out attribute bits already set. */ 2437 changed = gc2.attr & ~tc->attr; 2438 tc->attr = gc2.attr; 2439 2440 /* Set the attributes. */ 2441 if (changed & GRID_ATTR_BRIGHT) 2442 tty_putcode(tty, TTYC_BOLD); 2443 if (changed & GRID_ATTR_DIM) 2444 tty_putcode(tty, TTYC_DIM); 2445 if (changed & GRID_ATTR_ITALICS) 2446 tty_set_italics(tty); 2447 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2448 if ((changed & GRID_ATTR_UNDERSCORE) || 2449 !tty_term_has(tty->term, TTYC_SMULX)) 2450 tty_putcode(tty, TTYC_SMUL); 2451 else if (changed & GRID_ATTR_UNDERSCORE_2) 2452 tty_putcode1(tty, TTYC_SMULX, 2); 2453 else if (changed & GRID_ATTR_UNDERSCORE_3) 2454 tty_putcode1(tty, TTYC_SMULX, 3); 2455 else if (changed & GRID_ATTR_UNDERSCORE_4) 2456 tty_putcode1(tty, TTYC_SMULX, 4); 2457 else if (changed & GRID_ATTR_UNDERSCORE_5) 2458 tty_putcode1(tty, TTYC_SMULX, 5); 2459 } 2460 if (changed & GRID_ATTR_BLINK) 2461 tty_putcode(tty, TTYC_BLINK); 2462 if (changed & GRID_ATTR_REVERSE) { 2463 if (tty_term_has(tty->term, TTYC_REV)) 2464 tty_putcode(tty, TTYC_REV); 2465 else if (tty_term_has(tty->term, TTYC_SMSO)) 2466 tty_putcode(tty, TTYC_SMSO); 2467 } 2468 if (changed & GRID_ATTR_HIDDEN) 2469 tty_putcode(tty, TTYC_INVIS); 2470 if (changed & GRID_ATTR_STRIKETHROUGH) 2471 tty_putcode(tty, TTYC_SMXX); 2472 if (changed & GRID_ATTR_OVERLINE) 2473 tty_putcode(tty, TTYC_SMOL); 2474 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2475 tty_putcode(tty, TTYC_SMACS); 2476 2477 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2478 } 2479 2480 static void 2481 tty_colours(struct tty *tty, const struct grid_cell *gc) 2482 { 2483 struct grid_cell *tc = &tty->cell; 2484 int have_ax; 2485 2486 /* No changes? Nothing is necessary. */ 2487 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2488 return; 2489 2490 /* 2491 * Is either the default colour? This is handled specially because the 2492 * best solution might be to reset both colours to default, in which 2493 * case if only one is default need to fall onward to set the other 2494 * colour. 2495 */ 2496 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2497 /* 2498 * If don't have AX but do have op, send sgr0 (op can't 2499 * actually be used because it is sometimes the same as sgr0 2500 * and sometimes isn't). This resets both colours to default. 2501 * 2502 * Otherwise, try to set the default colour only as needed. 2503 */ 2504 have_ax = tty_term_flag(tty->term, TTYC_AX); 2505 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2506 tty_reset(tty); 2507 else { 2508 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2509 if (have_ax) 2510 tty_puts(tty, "\033[39m"); 2511 else if (tc->fg != 7) 2512 tty_putcode1(tty, TTYC_SETAF, 7); 2513 tc->fg = gc->fg; 2514 } 2515 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2516 if (have_ax) 2517 tty_puts(tty, "\033[49m"); 2518 else if (tc->bg != 0) 2519 tty_putcode1(tty, TTYC_SETAB, 0); 2520 tc->bg = gc->bg; 2521 } 2522 } 2523 } 2524 2525 /* Set the foreground colour. */ 2526 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2527 tty_colours_fg(tty, gc); 2528 2529 /* 2530 * Set the background colour. This must come after the foreground as 2531 * tty_colour_fg() can call tty_reset(). 2532 */ 2533 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2534 tty_colours_bg(tty, gc); 2535 2536 /* Set the underscore colour. */ 2537 if (gc->us != tc->us) 2538 tty_colours_us(tty, gc); 2539 } 2540 2541 static void 2542 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2543 struct grid_cell *gc) 2544 { 2545 u_char r, g, b; 2546 u_int colours; 2547 int c; 2548 2549 /* 2550 * Perform substitution if this pane has a palette. If the bright 2551 * attribute is set, use the bright entry in the palette by changing to 2552 * the aixterm colour. 2553 */ 2554 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2555 c = gc->fg; 2556 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 2557 c += 90; 2558 if ((c = colour_palette_get(palette, c)) != -1) 2559 gc->fg = c; 2560 } 2561 2562 /* Is this a 24-bit colour? */ 2563 if (gc->fg & COLOUR_FLAG_RGB) { 2564 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2565 if (tty->term->flags & TERM_RGBCOLOURS) 2566 return; 2567 colour_split_rgb(gc->fg, &r, &g, &b); 2568 gc->fg = colour_find_rgb(r, g, b); 2569 } 2570 2571 /* How many colours does this terminal have? */ 2572 if (tty->term->flags & TERM_256COLOURS) 2573 colours = 256; 2574 else 2575 colours = tty_term_number(tty->term, TTYC_COLORS); 2576 2577 /* Is this a 256-colour colour? */ 2578 if (gc->fg & COLOUR_FLAG_256) { 2579 /* And not a 256 colour mode? */ 2580 if (colours < 256) { 2581 gc->fg = colour_256to16(gc->fg); 2582 if (gc->fg & 8) { 2583 gc->fg &= 7; 2584 if (colours >= 16) 2585 gc->fg += 90; 2586 } 2587 } 2588 return; 2589 } 2590 2591 /* Is this an aixterm colour? */ 2592 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2593 gc->fg -= 90; 2594 gc->attr |= GRID_ATTR_BRIGHT; 2595 } 2596 } 2597 2598 static void 2599 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2600 struct grid_cell *gc) 2601 { 2602 u_char r, g, b; 2603 u_int colours; 2604 int c; 2605 2606 /* Perform substitution if this pane has a palette. */ 2607 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2608 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2609 gc->bg = c; 2610 } 2611 2612 /* Is this a 24-bit colour? */ 2613 if (gc->bg & COLOUR_FLAG_RGB) { 2614 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2615 if (tty->term->flags & TERM_RGBCOLOURS) 2616 return; 2617 colour_split_rgb(gc->bg, &r, &g, &b); 2618 gc->bg = colour_find_rgb(r, g, b); 2619 } 2620 2621 /* How many colours does this terminal have? */ 2622 if (tty->term->flags & TERM_256COLOURS) 2623 colours = 256; 2624 else 2625 colours = tty_term_number(tty->term, TTYC_COLORS); 2626 2627 /* Is this a 256-colour colour? */ 2628 if (gc->bg & COLOUR_FLAG_256) { 2629 /* 2630 * And not a 256 colour mode? Translate to 16-colour 2631 * palette. Bold background doesn't exist portably, so just 2632 * discard the bold bit if set. 2633 */ 2634 if (colours < 256) { 2635 gc->bg = colour_256to16(gc->bg); 2636 if (gc->bg & 8) { 2637 gc->bg &= 7; 2638 if (colours >= 16) 2639 gc->bg += 90; 2640 } 2641 } 2642 return; 2643 } 2644 2645 /* Is this an aixterm colour? */ 2646 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2647 gc->bg -= 90; 2648 } 2649 2650 static void 2651 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2652 struct grid_cell *gc) 2653 { 2654 int c; 2655 2656 /* Perform substitution if this pane has a palette. */ 2657 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2658 if ((c = colour_palette_get(palette, gc->us)) != -1) 2659 gc->us = c; 2660 } 2661 2662 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2663 if (gc->us & COLOUR_FLAG_256) 2664 gc->us = colour_256toRGB (gc->us); 2665 } 2666 2667 static void 2668 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2669 { 2670 struct grid_cell *tc = &tty->cell; 2671 char s[32]; 2672 2673 /* Is this a 24-bit or 256-colour colour? */ 2674 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2675 if (tty_try_colour(tty, gc->fg, "38") == 0) 2676 goto save; 2677 /* Should not get here, already converted in tty_check_fg. */ 2678 return; 2679 } 2680 2681 /* Is this an aixterm bright colour? */ 2682 if (gc->fg >= 90 && gc->fg <= 97) { 2683 if (tty->term->flags & TERM_256COLOURS) { 2684 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2685 tty_puts(tty, s); 2686 } else 2687 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2688 goto save; 2689 } 2690 2691 /* Otherwise set the foreground colour. */ 2692 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2693 2694 save: 2695 /* Save the new values in the terminal current cell. */ 2696 tc->fg = gc->fg; 2697 } 2698 2699 static void 2700 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2701 { 2702 struct grid_cell *tc = &tty->cell; 2703 char s[32]; 2704 2705 /* Is this a 24-bit or 256-colour colour? */ 2706 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2707 if (tty_try_colour(tty, gc->bg, "48") == 0) 2708 goto save; 2709 /* Should not get here, already converted in tty_check_bg. */ 2710 return; 2711 } 2712 2713 /* Is this an aixterm bright colour? */ 2714 if (gc->bg >= 90 && gc->bg <= 97) { 2715 if (tty->term->flags & TERM_256COLOURS) { 2716 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2717 tty_puts(tty, s); 2718 } else 2719 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2720 goto save; 2721 } 2722 2723 /* Otherwise set the background colour. */ 2724 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2725 2726 save: 2727 /* Save the new values in the terminal current cell. */ 2728 tc->bg = gc->bg; 2729 } 2730 2731 static void 2732 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2733 { 2734 struct grid_cell *tc = &tty->cell; 2735 u_int c; 2736 u_char r, g, b; 2737 2738 /* Clear underline colour. */ 2739 if (gc->us == 0) { 2740 tty_putcode(tty, TTYC_OL); 2741 goto save; 2742 } 2743 2744 /* Must be an RGB colour - this should never happen. */ 2745 if (~gc->us & COLOUR_FLAG_RGB) 2746 return; 2747 2748 /* 2749 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2750 * capability format. Calculate the colour value. 2751 */ 2752 colour_split_rgb(gc->us, &r, &g, &b); 2753 c = (65536 * r) + (256 * g) + b; 2754 2755 /* 2756 * Write the colour. Only use setal if the RGB flag is set because the 2757 * non-RGB version may be wrong. 2758 */ 2759 if (tty_term_has(tty->term, TTYC_SETULC)) 2760 tty_putcode1(tty, TTYC_SETULC, c); 2761 else if (tty_term_has(tty->term, TTYC_SETAL) && 2762 tty_term_has(tty->term, TTYC_RGB)) 2763 tty_putcode1(tty, TTYC_SETAL, c); 2764 2765 save: 2766 /* Save the new values in the terminal current cell. */ 2767 tc->us = gc->us; 2768 } 2769 2770 static int 2771 tty_try_colour(struct tty *tty, int colour, const char *type) 2772 { 2773 u_char r, g, b; 2774 2775 if (colour & COLOUR_FLAG_256) { 2776 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2777 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2778 else if (tty_term_has(tty->term, TTYC_SETAB)) 2779 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2780 return (0); 2781 } 2782 2783 if (colour & COLOUR_FLAG_RGB) { 2784 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2785 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2786 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2787 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2788 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2789 return (0); 2790 } 2791 2792 return (-1); 2793 } 2794 2795 static void 2796 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2797 { 2798 memcpy(gc, &grid_default_cell, sizeof *gc); 2799 gc->fg = wp->palette.fg; 2800 gc->bg = wp->palette.bg; 2801 } 2802 2803 void 2804 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2805 { 2806 struct options *oo = wp->options; 2807 struct format_tree *ft; 2808 2809 memcpy(gc, &grid_default_cell, sizeof *gc); 2810 2811 if (wp->flags & PANE_STYLECHANGED) { 2812 log_debug("%%%u: style changed", wp->id); 2813 wp->flags &= ~PANE_STYLECHANGED; 2814 2815 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2816 FORMAT_NOJOBS); 2817 format_defaults(ft, NULL, NULL, NULL, wp); 2818 tty_window_default_style(&wp->cached_active_gc, wp); 2819 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2820 tty_window_default_style(&wp->cached_gc, wp); 2821 style_add(&wp->cached_gc, oo, "window-style", ft); 2822 format_free(ft); 2823 } 2824 2825 if (gc->fg == 8) { 2826 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2827 gc->fg = wp->cached_active_gc.fg; 2828 else 2829 gc->fg = wp->cached_gc.fg; 2830 } 2831 2832 if (gc->bg == 8) { 2833 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2834 gc->bg = wp->cached_active_gc.bg; 2835 else 2836 gc->bg = wp->cached_gc.bg; 2837 } 2838 } 2839 2840 static void 2841 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2842 struct colour_palette *palette, u_int bg) 2843 { 2844 struct grid_cell gc; 2845 2846 memcpy(&gc, &grid_default_cell, sizeof gc); 2847 gc.bg = bg; 2848 tty_attributes(tty, &gc, defaults, palette); 2849 } 2850