1 /* $OpenBSD$ */ 2 3 /* 4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/ioctl.h> 21 22 #include <netinet/in.h> 23 24 #include <curses.h> 25 #include <errno.h> 26 #include <fcntl.h> 27 #include <resolv.h> 28 #include <stdlib.h> 29 #include <string.h> 30 #include <termios.h> 31 #include <unistd.h> 32 33 #include "tmux.h" 34 35 static int tty_log_fd = -1; 36 37 static int tty_client_ready(struct client *, struct window_pane *); 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 *, const struct window_pane *, 49 struct grid_cell *); 50 static void tty_check_bg(struct tty *, const struct window_pane *, 51 struct grid_cell *); 52 static void tty_colours_fg(struct tty *, const struct grid_cell *); 53 static void tty_colours_bg(struct tty *, const struct grid_cell *); 54 55 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 56 u_int); 57 static void tty_region(struct tty *, u_int, u_int); 58 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 59 static void tty_margin(struct tty *, u_int, u_int); 60 static int tty_large_region(struct tty *, const struct tty_ctx *); 61 static int tty_fake_bce(const struct tty *, const struct window_pane *, 62 u_int); 63 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 64 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 65 enum tty_code_code, u_int); 66 static void tty_repeat_space(struct tty *, u_int); 67 static void tty_cell(struct tty *, const struct grid_cell *, 68 const struct window_pane *); 69 static void tty_default_colours(struct grid_cell *, 70 const struct window_pane *); 71 static void tty_default_attributes(struct tty *, const struct window_pane *, 72 u_int); 73 74 #define tty_use_margin(tty) \ 75 ((tty)->term_type == TTY_VT420) 76 77 #define tty_pane_full_width(tty, ctx) \ 78 ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (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, int fd, char *term) 98 { 99 if (!isatty(fd)) 100 return (-1); 101 102 memset(tty, 0, sizeof *tty); 103 104 if (term == NULL || *term == '\0') 105 tty->term_name = xstrdup("unknown"); 106 else 107 tty->term_name = xstrdup(term); 108 109 tty->fd = fd; 110 tty->client = c; 111 112 tty->cstyle = 0; 113 tty->ccolour = xstrdup(""); 114 115 tty->flags = 0; 116 117 tty->term_flags = 0; 118 tty->term_type = TTY_UNKNOWN; 119 120 return (0); 121 } 122 123 void 124 tty_resize(struct tty *tty) 125 { 126 struct client *c = tty->client; 127 struct winsize ws; 128 u_int sx, sy; 129 130 if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) { 131 sx = ws.ws_col; 132 if (sx == 0) 133 sx = 80; 134 sy = ws.ws_row; 135 if (sy == 0) 136 sy = 24; 137 } else { 138 sx = 80; 139 sy = 24; 140 } 141 log_debug("%s: %s now %ux%u", __func__, c->name, sx, sy); 142 tty_set_size(tty, sx, sy); 143 tty_invalidate(tty); 144 } 145 146 void 147 tty_set_size(struct tty *tty, u_int sx, u_int sy) 148 { 149 tty->sx = sx; 150 tty->sy = sy; 151 } 152 153 static void 154 tty_read_callback(__unused int fd, __unused short events, void *data) 155 { 156 struct tty *tty = data; 157 struct client *c = tty->client; 158 size_t size = EVBUFFER_LENGTH(tty->in); 159 int nread; 160 161 nread = evbuffer_read(tty->in, tty->fd, -1); 162 if (nread == 0 || nread == -1) { 163 event_del(&tty->event_in); 164 server_client_lost(tty->client); 165 return; 166 } 167 log_debug("%s: read %d bytes (already %zu)", c->name, nread, size); 168 169 while (tty_keys_next(tty)) 170 ; 171 } 172 173 static void 174 tty_timer_callback(__unused int fd, __unused short events, void *data) 175 { 176 struct tty *tty = data; 177 struct client *c = tty->client; 178 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 179 180 log_debug("%s: %zu discarded", c->name, tty->discarded); 181 182 c->flags |= CLIENT_REDRAW; 183 c->discarded += tty->discarded; 184 185 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 186 tty->flags &= ~TTY_BLOCK; 187 tty_invalidate(tty); 188 return; 189 } 190 tty->discarded = 0; 191 evtimer_add(&tty->timer, &tv); 192 } 193 194 static int 195 tty_block_maybe(struct tty *tty) 196 { 197 struct client *c = tty->client; 198 size_t size = EVBUFFER_LENGTH(tty->out); 199 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 200 201 if (size < TTY_BLOCK_START(tty)) 202 return (0); 203 204 if (tty->flags & TTY_BLOCK) 205 return (1); 206 tty->flags |= TTY_BLOCK; 207 208 log_debug("%s: can't keep up, %zu discarded", c->name, size); 209 210 evbuffer_drain(tty->out, size); 211 c->discarded += size; 212 213 tty->discarded = 0; 214 evtimer_add(&tty->timer, &tv); 215 return (1); 216 } 217 218 static void 219 tty_write_callback(__unused int fd, __unused short events, void *data) 220 { 221 struct tty *tty = data; 222 struct client *c = tty->client; 223 size_t size = EVBUFFER_LENGTH(tty->out); 224 int nwrite; 225 226 nwrite = evbuffer_write(tty->out, tty->fd); 227 if (nwrite == -1) 228 return; 229 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 230 231 if (c->redraw > 0) { 232 if ((size_t)nwrite >= c->redraw) 233 c->redraw = 0; 234 else 235 c->redraw -= nwrite; 236 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 237 c->redraw); 238 } else if (tty_block_maybe(tty)) 239 return; 240 241 if (EVBUFFER_LENGTH(tty->out) != 0) 242 event_add(&tty->event_out, NULL); 243 } 244 245 int 246 tty_open(struct tty *tty, char **cause) 247 { 248 tty->term = tty_term_find(tty->term_name, tty->fd, cause); 249 if (tty->term == NULL) { 250 tty_close(tty); 251 return (-1); 252 } 253 tty->flags |= TTY_OPENED; 254 255 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 256 257 event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ, 258 tty_read_callback, tty); 259 tty->in = evbuffer_new(); 260 261 event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty); 262 tty->out = evbuffer_new(); 263 264 evtimer_set(&tty->timer, tty_timer_callback, tty); 265 266 tty_start_tty(tty); 267 268 tty_keys_build(tty); 269 270 return (0); 271 } 272 273 void 274 tty_start_tty(struct tty *tty) 275 { 276 struct client *c = tty->client; 277 struct termios tio; 278 279 if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) { 280 setblocking(tty->fd, 0); 281 event_add(&tty->event_in, NULL); 282 283 memcpy(&tio, &tty->tio, sizeof tio); 284 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 285 tio.c_iflag |= IGNBRK; 286 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 287 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL| 288 ECHOPRT|ECHOKE|ISIG); 289 tio.c_cc[VMIN] = 1; 290 tio.c_cc[VTIME] = 0; 291 if (tcsetattr(tty->fd, TCSANOW, &tio) == 0) 292 tcflush(tty->fd, TCIOFLUSH); 293 } 294 295 tty_putcode(tty, TTYC_SMCUP); 296 297 tty_putcode(tty, TTYC_SMKX); 298 tty_putcode(tty, TTYC_CLEAR); 299 300 if (tty_acs_needed(tty)) { 301 log_debug("%s: using capabilities for ACS", c->name); 302 tty_putcode(tty, TTYC_ENACS); 303 } else 304 log_debug("%s: using UTF-8 for ACS", c->name); 305 306 tty_putcode(tty, TTYC_CNORM); 307 if (tty_term_has(tty->term, TTYC_KMOUS)) 308 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l"); 309 310 if (tty_term_flag(tty->term, TTYC_XT)) { 311 if (options_get_number(global_options, "focus-events")) { 312 tty->flags |= TTY_FOCUS; 313 tty_puts(tty, "\033[?1004h"); 314 } 315 tty_puts(tty, "\033[c"); 316 } 317 318 tty->flags |= TTY_STARTED; 319 tty_invalidate(tty); 320 321 tty_force_cursor_colour(tty, ""); 322 323 tty->mouse_drag_flag = 0; 324 tty->mouse_drag_update = NULL; 325 tty->mouse_drag_release = NULL; 326 } 327 328 void 329 tty_stop_tty(struct tty *tty) 330 { 331 struct winsize ws; 332 333 if (!(tty->flags & TTY_STARTED)) 334 return; 335 tty->flags &= ~TTY_STARTED; 336 337 event_del(&tty->timer); 338 tty->flags &= ~TTY_BLOCK; 339 340 event_del(&tty->event_in); 341 event_del(&tty->event_out); 342 343 /* 344 * Be flexible about error handling and try not kill the server just 345 * because the fd is invalid. Things like ssh -t can easily leave us 346 * with a dead tty. 347 */ 348 if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1) 349 return; 350 if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1) 351 return; 352 353 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 354 if (tty_acs_needed(tty)) 355 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 356 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 357 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 358 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 359 if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) { 360 if (tty_term_has(tty->term, TTYC_SE)) 361 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 362 else 363 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0)); 364 } 365 if (tty->mode & MODE_BRACKETPASTE) 366 tty_raw(tty, "\033[?2004l"); 367 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 368 369 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 370 if (tty_term_has(tty->term, TTYC_KMOUS)) 371 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l"); 372 373 if (tty_term_flag(tty->term, TTYC_XT)) { 374 if (tty->flags & TTY_FOCUS) { 375 tty->flags &= ~TTY_FOCUS; 376 tty_raw(tty, "\033[?1004l"); 377 } 378 } 379 380 if (tty_use_margin(tty)) 381 tty_raw(tty, "\033[?69l"); /* DECLRMM */ 382 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 383 384 setblocking(tty->fd, 1); 385 } 386 387 void 388 tty_close(struct tty *tty) 389 { 390 if (event_initialized(&tty->key_timer)) 391 evtimer_del(&tty->key_timer); 392 tty_stop_tty(tty); 393 394 if (tty->flags & TTY_OPENED) { 395 evbuffer_free(tty->in); 396 event_del(&tty->event_in); 397 evbuffer_free(tty->out); 398 event_del(&tty->event_out); 399 400 tty_term_free(tty->term); 401 tty_keys_free(tty); 402 403 tty->flags &= ~TTY_OPENED; 404 } 405 406 if (tty->fd != -1) { 407 close(tty->fd); 408 tty->fd = -1; 409 } 410 } 411 412 void 413 tty_free(struct tty *tty) 414 { 415 tty_close(tty); 416 417 free(tty->ccolour); 418 free(tty->term_name); 419 } 420 421 void 422 tty_set_type(struct tty *tty, int type) 423 { 424 tty->term_type = type; 425 426 if (tty_use_margin(tty)) 427 tty_puts(tty, "\033[?69h"); /* DECLRMM */ 428 } 429 430 void 431 tty_raw(struct tty *tty, const char *s) 432 { 433 ssize_t n, slen; 434 u_int i; 435 436 slen = strlen(s); 437 for (i = 0; i < 5; i++) { 438 n = write(tty->fd, s, slen); 439 if (n >= 0) { 440 s += n; 441 slen -= n; 442 if (slen == 0) 443 break; 444 } else if (n == -1 && errno != EAGAIN) 445 break; 446 usleep(100); 447 } 448 } 449 450 void 451 tty_putcode(struct tty *tty, enum tty_code_code code) 452 { 453 tty_puts(tty, tty_term_string(tty->term, code)); 454 } 455 456 void 457 tty_putcode1(struct tty *tty, enum tty_code_code code, int a) 458 { 459 if (a < 0) 460 return; 461 tty_puts(tty, tty_term_string1(tty->term, code, a)); 462 } 463 464 void 465 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) 466 { 467 if (a < 0 || b < 0) 468 return; 469 tty_puts(tty, tty_term_string2(tty->term, code, a, b)); 470 } 471 472 void 473 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c) 474 { 475 if (a < 0 || b < 0 || c < 0) 476 return; 477 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c)); 478 } 479 480 void 481 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a) 482 { 483 if (a != NULL) 484 tty_puts(tty, tty_term_ptr1(tty->term, code, a)); 485 } 486 487 void 488 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, 489 const void *b) 490 { 491 if (a != NULL && b != NULL) 492 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b)); 493 } 494 495 static void 496 tty_add(struct tty *tty, const char *buf, size_t len) 497 { 498 struct client *c = tty->client; 499 500 if (tty->flags & TTY_BLOCK) { 501 tty->discarded += len; 502 return; 503 } 504 505 evbuffer_add(tty->out, buf, len); 506 log_debug("%s: %.*s", c->name, (int)len, buf); 507 c->written += len; 508 509 if (tty_log_fd != -1) 510 write(tty_log_fd, buf, len); 511 if (tty->flags & TTY_STARTED) 512 event_add(&tty->event_out, NULL); 513 } 514 515 void 516 tty_puts(struct tty *tty, const char *s) 517 { 518 if (*s != '\0') 519 tty_add(tty, s, strlen(s)); 520 } 521 522 void 523 tty_putc(struct tty *tty, u_char ch) 524 { 525 const char *acs; 526 527 if (tty->cell.attr & GRID_ATTR_CHARSET) { 528 acs = tty_acs_get(tty, ch); 529 if (acs != NULL) 530 tty_add(tty, acs, strlen(acs)); 531 else 532 tty_add(tty, (char *)&ch, 1); 533 } else 534 tty_add(tty, (char *)&ch, 1); 535 536 if (ch >= 0x20 && ch != 0x7f) { 537 if (tty->cx >= tty->sx) { 538 tty->cx = 1; 539 if (tty->cy != tty->rlower) 540 tty->cy++; 541 542 /* 543 * On !xenl terminals, force the cursor position to 544 * where we think it should be after a line wrap - this 545 * means it works on sensible terminals as well. 546 */ 547 if (tty->term->flags & TERM_EARLYWRAP) 548 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); 549 } else 550 tty->cx++; 551 } 552 } 553 554 void 555 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 556 { 557 tty_add(tty, buf, len); 558 if (tty->cx + width > tty->sx) { 559 tty->cx = (tty->cx + width) - tty->sx; 560 if (tty->cx <= tty->sx) 561 tty->cy++; 562 else 563 tty->cx = tty->cy = UINT_MAX; 564 } else 565 tty->cx += width; 566 } 567 568 static void 569 tty_set_italics(struct tty *tty) 570 { 571 const char *s; 572 573 if (tty_term_has(tty->term, TTYC_SITM)) { 574 s = options_get_string(global_options, "default-terminal"); 575 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 576 tty_putcode(tty, TTYC_SITM); 577 return; 578 } 579 } 580 tty_putcode(tty, TTYC_SMSO); 581 } 582 583 void 584 tty_set_title(struct tty *tty, const char *title) 585 { 586 if (!tty_term_has(tty->term, TTYC_TSL) || 587 !tty_term_has(tty->term, TTYC_FSL)) 588 return; 589 590 tty_putcode(tty, TTYC_TSL); 591 tty_puts(tty, title); 592 tty_putcode(tty, TTYC_FSL); 593 } 594 595 static void 596 tty_force_cursor_colour(struct tty *tty, const char *ccolour) 597 { 598 if (*ccolour == '\0') 599 tty_putcode(tty, TTYC_CR); 600 else 601 tty_putcode_ptr1(tty, TTYC_CS, ccolour); 602 free(tty->ccolour); 603 tty->ccolour = xstrdup(ccolour); 604 } 605 606 void 607 tty_update_mode(struct tty *tty, int mode, struct screen *s) 608 { 609 int changed; 610 611 if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0) 612 tty_force_cursor_colour(tty, s->ccolour); 613 614 if (tty->flags & TTY_NOCURSOR) 615 mode &= ~MODE_CURSOR; 616 617 changed = mode ^ tty->mode; 618 if (changed & MODE_BLINKING) { 619 if (tty_term_has(tty->term, TTYC_CVVIS)) 620 tty_putcode(tty, TTYC_CVVIS); 621 else 622 tty_putcode(tty, TTYC_CNORM); 623 changed |= MODE_CURSOR; 624 } 625 if (changed & MODE_CURSOR) { 626 if (mode & MODE_CURSOR) 627 tty_putcode(tty, TTYC_CNORM); 628 else 629 tty_putcode(tty, TTYC_CIVIS); 630 } 631 if (s != NULL && tty->cstyle != s->cstyle) { 632 if (tty_term_has(tty->term, TTYC_SS)) { 633 if (s->cstyle == 0 && 634 tty_term_has(tty->term, TTYC_SE)) 635 tty_putcode(tty, TTYC_SE); 636 else 637 tty_putcode1(tty, TTYC_SS, s->cstyle); 638 } 639 tty->cstyle = s->cstyle; 640 } 641 if (changed & ALL_MOUSE_MODES) { 642 if (mode & ALL_MOUSE_MODES) { 643 /* 644 * Enable the SGR (1006) extension unconditionally, as 645 * it is safe from misinterpretation. 646 */ 647 tty_puts(tty, "\033[?1006h"); 648 if (mode & MODE_MOUSE_ALL) 649 tty_puts(tty, "\033[?1003h"); 650 else if (mode & MODE_MOUSE_BUTTON) 651 tty_puts(tty, "\033[?1002h"); 652 else if (mode & MODE_MOUSE_STANDARD) 653 tty_puts(tty, "\033[?1000h"); 654 } else { 655 if (tty->mode & MODE_MOUSE_ALL) 656 tty_puts(tty, "\033[?1003l"); 657 else if (tty->mode & MODE_MOUSE_BUTTON) 658 tty_puts(tty, "\033[?1002l"); 659 else if (tty->mode & MODE_MOUSE_STANDARD) 660 tty_puts(tty, "\033[?1000l"); 661 tty_puts(tty, "\033[?1006l"); 662 } 663 } 664 if (changed & MODE_BRACKETPASTE) { 665 if (mode & MODE_BRACKETPASTE) 666 tty_puts(tty, "\033[?2004h"); 667 else 668 tty_puts(tty, "\033[?2004l"); 669 } 670 tty->mode = mode; 671 } 672 673 static void 674 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 675 enum tty_code_code code1, u_int n) 676 { 677 if (tty_term_has(tty->term, code)) 678 tty_putcode1(tty, code, n); 679 else { 680 while (n-- > 0) 681 tty_putcode(tty, code1); 682 } 683 } 684 685 static void 686 tty_repeat_space(struct tty *tty, u_int n) 687 { 688 static char s[500]; 689 690 if (*s != ' ') 691 memset(s, ' ', sizeof s); 692 693 while (n > sizeof s) { 694 tty_putn(tty, s, sizeof s, sizeof s); 695 n -= sizeof s; 696 } 697 if (n != 0) 698 tty_putn(tty, s, n, n); 699 } 700 701 /* 702 * Is the region large enough to be worth redrawing once later rather than 703 * probably several times now? Currently yes if it is more than 50% of the 704 * pane. 705 */ 706 static int 707 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 708 { 709 struct window_pane *wp = ctx->wp; 710 711 return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2); 712 } 713 714 /* 715 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 716 * emulated. 717 */ 718 static int 719 tty_fake_bce(const struct tty *tty, const struct window_pane *wp, u_int bg) 720 { 721 struct grid_cell gc; 722 723 if (tty_term_flag(tty->term, TTYC_BCE)) 724 return (0); 725 726 memcpy(&gc, &grid_default_cell, sizeof gc); 727 if (wp != NULL) 728 tty_default_colours(&gc, wp); 729 730 if (bg != 8 || gc.bg != 8) 731 return (1); 732 return (0); 733 } 734 735 /* 736 * Redraw scroll region using data from screen (already updated). Used when 737 * CSR not supported, or window is a pane that doesn't take up the full 738 * width of the terminal. 739 */ 740 static void 741 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 742 { 743 struct window_pane *wp = ctx->wp; 744 struct screen *s = wp->screen; 745 u_int i; 746 747 /* 748 * If region is large, schedule a window redraw. In most cases this is 749 * likely to be followed by some more scrolling. 750 */ 751 if (tty_large_region(tty, ctx)) { 752 wp->flags |= PANE_REDRAW; 753 return; 754 } 755 756 if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) { 757 for (i = ctx->ocy; i < screen_size_y(s); i++) 758 tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff); 759 } else { 760 for (i = ctx->orupper; i <= ctx->orlower; i++) 761 tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff); 762 } 763 } 764 765 static void 766 tty_clear_line(struct tty *tty, const struct window_pane *wp, u_int py, 767 u_int px, u_int nx, u_int bg) 768 { 769 log_debug("%s: %u at %u,%u", __func__, nx, px, py); 770 771 /* Nothing to clear. */ 772 if (nx == 0) 773 return; 774 775 /* If genuine BCE is available, can try escape sequences. */ 776 if (!tty_fake_bce(tty, wp, bg)) { 777 /* Off the end of the line, use EL if available. */ 778 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 779 tty_cursor(tty, px, py); 780 tty_putcode(tty, TTYC_EL); 781 return; 782 } 783 784 /* At the start of the line. Use EL1. */ 785 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 786 tty_cursor(tty, px + nx - 1, py); 787 tty_putcode(tty, TTYC_EL1); 788 return; 789 } 790 791 /* Section of line. Use ECH if possible. */ 792 if (tty_term_has(tty->term, TTYC_ECH)) { 793 tty_cursor(tty, px, py); 794 tty_putcode1(tty, TTYC_ECH, nx); 795 return; 796 } 797 } 798 799 /* Couldn't use an escape sequence, use spaces. */ 800 tty_cursor(tty, px, py); 801 tty_repeat_space(tty, nx); 802 } 803 804 static void 805 tty_clear_area(struct tty *tty, const struct window_pane *wp, u_int py, 806 u_int ny, u_int px, u_int nx, u_int bg) 807 { 808 u_int yy; 809 char tmp[64]; 810 811 log_debug("%s: %u,%u at %u,%u", __func__, nx, ny, px, py); 812 813 /* Nothing to clear. */ 814 if (nx == 0 || ny == 0) 815 return; 816 817 /* If genuine BCE is available, can try escape sequences. */ 818 if (!tty_fake_bce(tty, wp, bg)) { 819 /* Use ED if clearing off the bottom of the terminal. */ 820 if (px == 0 && 821 px + nx >= tty->sx && 822 py + ny >= tty->sy && 823 tty_term_has(tty->term, TTYC_ED)) { 824 tty_cursor(tty, 0, py); 825 tty_putcode(tty, TTYC_ED); 826 return; 827 } 828 829 /* 830 * On VT420 compatible terminals we can use DECFRA if the 831 * background colour isn't default (because it doesn't work 832 * after SGR 0). 833 */ 834 if (tty->term_type == TTY_VT420 && bg != 8) { 835 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 836 py + 1, px + 1, py + ny, px + nx); 837 tty_puts(tty, tmp); 838 return; 839 } 840 841 /* Full lines can be scrolled away to clear them. */ 842 if (px == 0 && 843 px + nx >= tty->sx && 844 ny > 2 && 845 tty_term_has(tty->term, TTYC_CSR) && 846 tty_term_has(tty->term, TTYC_INDN)) { 847 tty_region(tty, py, py + ny - 1); 848 tty_margin_off(tty); 849 tty_putcode1(tty, TTYC_INDN, ny); 850 return; 851 } 852 853 /* 854 * If margins are supported, can just scroll the area off to 855 * clear it. 856 */ 857 if (nx > 2 && 858 ny > 2 && 859 tty_term_has(tty->term, TTYC_CSR) && 860 tty_use_margin(tty) && 861 tty_term_has(tty->term, TTYC_INDN)) { 862 tty_region(tty, py, py + ny - 1); 863 tty_margin(tty, px, px + nx - 1); 864 tty_putcode1(tty, TTYC_INDN, ny); 865 return; 866 } 867 } 868 869 /* Couldn't use an escape sequence, loop over the lines. */ 870 for (yy = py; yy < py + ny; yy++) 871 tty_clear_line(tty, wp, yy, px, nx, bg); 872 } 873 874 void 875 tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox, 876 u_int oy) 877 { 878 tty_draw_line(tty, wp, wp->screen, py, ox, oy); 879 } 880 881 static const struct grid_cell * 882 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 883 { 884 static struct grid_cell new; 885 u_int n; 886 887 /* Characters less than 0x7f are always fine, no matter what. */ 888 if (gc->data.size == 1 && *gc->data.data < 0x7f) 889 return (gc); 890 891 /* UTF-8 terminal and a UTF-8 character - fine. */ 892 if (tty->flags & TTY_UTF8) 893 return (gc); 894 895 /* Replace by the right number of underscores. */ 896 n = gc->data.width; 897 if (n > UTF8_SIZE) 898 n = UTF8_SIZE; 899 memcpy(&new, gc, sizeof new); 900 new.data.size = n; 901 memset(new.data.data, '_', n); 902 return (&new); 903 } 904 905 void 906 tty_draw_line(struct tty *tty, const struct window_pane *wp, 907 struct screen *s, u_int py, u_int ox, u_int oy) 908 { 909 struct grid *gd = s->grid; 910 struct grid_cell gc, last; 911 const struct grid_cell *gcp; 912 u_int i, j, ux, sx, nx, width; 913 int flags, cleared = 0; 914 char buf[512]; 915 size_t len, old_len; 916 u_int cellsize; 917 918 flags = (tty->flags & TTY_NOCURSOR); 919 tty->flags |= TTY_NOCURSOR; 920 tty_update_mode(tty, tty->mode, s); 921 922 tty_region_off(tty); 923 tty_margin_off(tty); 924 925 /* 926 * Clamp the width to cellsize - note this is not cellused, because 927 * there may be empty background cells after it (from BCE). 928 */ 929 sx = screen_size_x(s); 930 931 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 932 if (sx > cellsize) 933 sx = cellsize; 934 if (sx > tty->sx) 935 sx = tty->sx; 936 ux = 0; 937 938 if (wp == NULL || 939 py == 0 || 940 (~grid_get_line(gd, gd->hsize + py - 1)->flags & GRID_LINE_WRAPPED) || 941 ox != 0 || 942 tty->cx < tty->sx || 943 screen_size_x(s) < tty->sx) { 944 if (screen_size_x(s) < tty->sx && 945 ox == 0 && 946 sx != screen_size_x(s) && 947 tty_term_has(tty->term, TTYC_EL1) && 948 !tty_fake_bce(tty, wp, 8)) { 949 tty_default_attributes(tty, wp, 8); 950 tty_cursor(tty, screen_size_x(s) - 1, oy + py); 951 tty_putcode(tty, TTYC_EL1); 952 cleared = 1; 953 } 954 if (sx != 0) 955 tty_cursor(tty, ox, oy + py); 956 } else 957 log_debug("%s: wrapped line %u", __func__, oy + py); 958 959 memcpy(&last, &grid_default_cell, sizeof last); 960 len = 0; 961 width = 0; 962 963 for (i = 0; i < sx; i++) { 964 grid_view_get_cell(gd, i, py, &gc); 965 gcp = tty_check_codeset(tty, &gc); 966 if (len != 0 && 967 ((gcp->attr & GRID_ATTR_CHARSET) || 968 gcp->flags != last.flags || 969 gcp->attr != last.attr || 970 gcp->fg != last.fg || 971 gcp->bg != last.bg || 972 ux + width + gcp->data.width >= screen_size_x(s) || 973 (sizeof buf) - len < gcp->data.size)) { 974 tty_attributes(tty, &last, wp); 975 tty_putn(tty, buf, len, width); 976 ux += width; 977 978 len = 0; 979 width = 0; 980 } 981 982 if (gcp->flags & GRID_FLAG_SELECTED) 983 screen_select_cell(s, &last, gcp); 984 else 985 memcpy(&last, gcp, sizeof last); 986 if (ux + gcp->data.width > screen_size_x(s)) { 987 tty_attributes(tty, &last, wp); 988 for (j = 0; j < gcp->data.width; j++) { 989 if (ux + j > screen_size_x(s)) 990 break; 991 tty_putc(tty, ' '); 992 ux++; 993 } 994 } else if (gcp->attr & GRID_ATTR_CHARSET) { 995 tty_attributes(tty, &last, wp); 996 for (j = 0; j < gcp->data.size; j++) 997 tty_putc(tty, gcp->data.data[j]); 998 ux += gc.data.width; 999 } else { 1000 memcpy(buf + len, gcp->data.data, gcp->data.size); 1001 len += gcp->data.size; 1002 width += gcp->data.width; 1003 } 1004 } 1005 if (len != 0) { 1006 if (grid_cells_equal(&last, &grid_default_cell)) { 1007 old_len = len; 1008 while (len > 0 && buf[len - 1] == ' ') { 1009 len--; 1010 width--; 1011 } 1012 log_debug("%s: trimmed %zu spaces", __func__, 1013 old_len - len); 1014 } 1015 if (len != 0) { 1016 tty_attributes(tty, &last, wp); 1017 tty_putn(tty, buf, len, width); 1018 ux += width; 1019 } 1020 } 1021 1022 if (!cleared && ux < screen_size_x(s)) { 1023 nx = screen_size_x(s) - ux; 1024 tty_default_attributes(tty, wp, 8); 1025 tty_clear_line(tty, wp, oy + py, ox + ux, nx, 8); 1026 } 1027 1028 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1029 tty_update_mode(tty, tty->mode, s); 1030 } 1031 1032 static int 1033 tty_client_ready(struct client *c, struct window_pane *wp) 1034 { 1035 if (c->session == NULL || c->tty.term == NULL) 1036 return (0); 1037 if (c->flags & (CLIENT_REDRAW|CLIENT_SUSPENDED)) 1038 return (0); 1039 if (c->tty.flags & TTY_FREEZE) 1040 return (0); 1041 if (c->session->curw->window != wp->window) 1042 return (0); 1043 return (1); 1044 } 1045 1046 void 1047 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1048 struct tty_ctx *ctx) 1049 { 1050 struct window_pane *wp = ctx->wp; 1051 struct client *c; 1052 1053 /* wp can be NULL if updating the screen but not the terminal. */ 1054 if (wp == NULL) 1055 return; 1056 1057 if ((wp->flags & (PANE_REDRAW|PANE_DROP)) || !window_pane_visible(wp)) 1058 return; 1059 1060 TAILQ_FOREACH(c, &clients, entry) { 1061 if (!tty_client_ready(c, wp)) 1062 continue; 1063 1064 ctx->xoff = wp->xoff; 1065 ctx->yoff = wp->yoff; 1066 if (status_at_line(c) == 0) 1067 ctx->yoff += status_line_size(c->session); 1068 1069 cmdfn(&c->tty, ctx); 1070 } 1071 } 1072 1073 void 1074 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1075 { 1076 struct window_pane *wp = ctx->wp; 1077 1078 if (!tty_pane_full_width(tty, ctx) || 1079 tty_fake_bce(tty, wp, ctx->bg) || 1080 (!tty_term_has(tty->term, TTYC_ICH) && 1081 !tty_term_has(tty->term, TTYC_ICH1))) { 1082 tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff); 1083 return; 1084 } 1085 1086 tty_default_attributes(tty, wp, ctx->bg); 1087 1088 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1089 1090 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1091 } 1092 1093 void 1094 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1095 { 1096 struct window_pane *wp = ctx->wp; 1097 1098 if (!tty_pane_full_width(tty, ctx) || 1099 tty_fake_bce(tty, wp, ctx->bg) || 1100 (!tty_term_has(tty->term, TTYC_DCH) && 1101 !tty_term_has(tty->term, TTYC_DCH1))) { 1102 tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff); 1103 return; 1104 } 1105 1106 tty_default_attributes(tty, wp, ctx->bg); 1107 1108 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1109 1110 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1111 } 1112 1113 void 1114 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1115 { 1116 tty_default_attributes(tty, ctx->wp, ctx->bg); 1117 1118 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1119 1120 if (tty_term_has(tty->term, TTYC_ECH) && 1121 !tty_fake_bce(tty, ctx->wp, 8)) 1122 tty_putcode1(tty, TTYC_ECH, ctx->num); 1123 else 1124 tty_repeat_space(tty, ctx->num); 1125 } 1126 1127 void 1128 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1129 { 1130 if (!tty_pane_full_width(tty, ctx) || 1131 tty_fake_bce(tty, ctx->wp, ctx->bg) || 1132 !tty_term_has(tty->term, TTYC_CSR) || 1133 !tty_term_has(tty->term, TTYC_IL1)) { 1134 tty_redraw_region(tty, ctx); 1135 return; 1136 } 1137 1138 tty_default_attributes(tty, ctx->wp, ctx->bg); 1139 1140 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1141 tty_margin_off(tty); 1142 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1143 1144 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1145 tty->cx = tty->cy = UINT_MAX; 1146 } 1147 1148 void 1149 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1150 { 1151 if (!tty_pane_full_width(tty, ctx) || 1152 tty_fake_bce(tty, ctx->wp, ctx->bg) || 1153 !tty_term_has(tty->term, TTYC_CSR) || 1154 !tty_term_has(tty->term, TTYC_DL1)) { 1155 tty_redraw_region(tty, ctx); 1156 return; 1157 } 1158 1159 tty_default_attributes(tty, ctx->wp, ctx->bg); 1160 1161 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1162 tty_margin_off(tty); 1163 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1164 1165 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1166 tty->cx = tty->cy = UINT_MAX; 1167 } 1168 1169 void 1170 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1171 { 1172 struct window_pane *wp = ctx->wp; 1173 u_int nx, py = ctx->yoff + ctx->ocy; 1174 1175 tty_default_attributes(tty, wp, ctx->bg); 1176 1177 nx = screen_size_x(wp->screen); 1178 tty_clear_line(tty, wp, py, ctx->xoff, nx, ctx->bg); 1179 } 1180 1181 void 1182 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1183 { 1184 struct window_pane *wp = ctx->wp; 1185 u_int nx, py = ctx->yoff + ctx->ocy; 1186 1187 tty_default_attributes(tty, wp, ctx->bg); 1188 1189 nx = screen_size_x(wp->screen) - ctx->ocx; 1190 tty_clear_line(tty, wp, py, ctx->xoff + ctx->ocx, nx, ctx->bg); 1191 } 1192 1193 void 1194 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1195 { 1196 struct window_pane *wp = ctx->wp; 1197 u_int py = ctx->yoff + ctx->ocy; 1198 1199 tty_default_attributes(tty, wp, ctx->bg); 1200 1201 tty_clear_line(tty, wp, py, ctx->xoff, ctx->ocx + 1, ctx->bg); 1202 } 1203 1204 void 1205 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1206 { 1207 struct window_pane *wp = ctx->wp; 1208 1209 if (ctx->ocy != ctx->orupper) 1210 return; 1211 1212 if (!tty_pane_full_width(tty, ctx) || 1213 tty_fake_bce(tty, wp, 8) || 1214 !tty_term_has(tty->term, TTYC_CSR) || 1215 !tty_term_has(tty->term, TTYC_RI)) { 1216 tty_redraw_region(tty, ctx); 1217 return; 1218 } 1219 1220 tty_default_attributes(tty, wp, ctx->bg); 1221 1222 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1223 tty_margin_off(tty); 1224 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1225 1226 tty_putcode(tty, TTYC_RI); 1227 } 1228 1229 void 1230 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1231 { 1232 struct window_pane *wp = ctx->wp; 1233 1234 if (ctx->ocy != ctx->orlower) 1235 return; 1236 1237 if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) || 1238 tty_fake_bce(tty, wp, 8) || 1239 !tty_term_has(tty->term, TTYC_CSR)) { 1240 tty_redraw_region(tty, ctx); 1241 return; 1242 } 1243 1244 tty_default_attributes(tty, wp, ctx->bg); 1245 1246 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1247 tty_margin_pane(tty, ctx); 1248 1249 /* 1250 * If we want to wrap a pane while using margins, the cursor needs to 1251 * be exactly on the right of the region. If the cursor is entirely off 1252 * the edge - move it back to the right. Some terminals are funny about 1253 * this and insert extra spaces, so only use the right if margins are 1254 * enabled. 1255 */ 1256 if (ctx->xoff + ctx->ocx > tty->rright) { 1257 if (!tty_use_margin(tty)) 1258 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1259 else 1260 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1261 } else 1262 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1263 1264 tty_putc(tty, '\n'); 1265 } 1266 1267 void 1268 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1269 { 1270 struct window_pane *wp = ctx->wp; 1271 u_int i; 1272 1273 if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) || 1274 tty_fake_bce(tty, wp, 8) || 1275 !tty_term_has(tty->term, TTYC_CSR)) { 1276 tty_redraw_region(tty, ctx); 1277 return; 1278 } 1279 1280 tty_default_attributes(tty, wp, ctx->bg); 1281 1282 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1283 tty_margin_pane(tty, ctx); 1284 1285 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1286 if (!tty_use_margin(tty)) 1287 tty_cursor(tty, 0, tty->rlower); 1288 else 1289 tty_cursor(tty, tty->rright, tty->rlower); 1290 for (i = 0; i < ctx->num; i++) 1291 tty_putc(tty, '\n'); 1292 } else { 1293 tty_cursor(tty, 0, tty->cy); 1294 tty_putcode1(tty, TTYC_INDN, ctx->num); 1295 } 1296 } 1297 1298 void 1299 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1300 { 1301 struct window_pane *wp = ctx->wp; 1302 u_int px, py, nx, ny; 1303 1304 tty_default_attributes(tty, wp, ctx->bg); 1305 1306 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1); 1307 tty_margin_off(tty); 1308 1309 px = ctx->xoff; 1310 nx = screen_size_x(wp->screen); 1311 py = ctx->yoff + ctx->ocy + 1; 1312 ny = screen_size_y(wp->screen) - ctx->ocy - 1; 1313 1314 tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg); 1315 1316 px = ctx->xoff + ctx->ocx; 1317 nx = screen_size_x(wp->screen) - ctx->ocx; 1318 py = ctx->yoff + ctx->ocy; 1319 1320 tty_clear_line(tty, wp, py, px, nx, ctx->bg); 1321 } 1322 1323 void 1324 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1325 { 1326 struct window_pane *wp = ctx->wp; 1327 u_int px, py, nx, ny; 1328 1329 tty_default_attributes(tty, wp, ctx->bg); 1330 1331 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1); 1332 tty_margin_off(tty); 1333 1334 px = ctx->xoff; 1335 nx = screen_size_x(wp->screen); 1336 py = ctx->yoff; 1337 ny = ctx->ocy - 1; 1338 1339 tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg); 1340 1341 px = ctx->xoff; 1342 nx = ctx->ocx + 1; 1343 py = ctx->yoff + ctx->ocy; 1344 1345 tty_clear_line(tty, wp, py, px, nx, ctx->bg); 1346 } 1347 1348 void 1349 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1350 { 1351 struct window_pane *wp = ctx->wp; 1352 u_int px, py, nx, ny; 1353 1354 tty_default_attributes(tty, wp, ctx->bg); 1355 1356 tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1); 1357 tty_margin_off(tty); 1358 1359 px = ctx->xoff; 1360 nx = screen_size_x(wp->screen); 1361 py = ctx->yoff; 1362 ny = screen_size_y(wp->screen); 1363 1364 tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg); 1365 } 1366 1367 void 1368 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 1369 { 1370 struct window_pane *wp = ctx->wp; 1371 struct screen *s = wp->screen; 1372 u_int i, j; 1373 1374 tty_attributes(tty, &grid_default_cell, wp); 1375 1376 tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1); 1377 tty_margin_off(tty); 1378 1379 for (j = 0; j < screen_size_y(s); j++) { 1380 tty_cursor_pane(tty, ctx, 0, j); 1381 for (i = 0; i < screen_size_x(s); i++) 1382 tty_putc(tty, 'E'); 1383 } 1384 } 1385 1386 void 1387 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 1388 { 1389 if (ctx->xoff + ctx->ocx > tty->sx - 1 && ctx->ocy == ctx->orlower) { 1390 if (tty_pane_full_width(tty, ctx)) 1391 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1392 else 1393 tty_margin_off(tty); 1394 } 1395 1396 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1397 1398 tty_cell(tty, ctx->cell, ctx->wp); 1399 } 1400 1401 void 1402 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 1403 { 1404 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 1405 1406 tty_attributes(tty, ctx->cell, ctx->wp); 1407 tty_putn(tty, ctx->ptr, ctx->num, ctx->num); 1408 } 1409 1410 void 1411 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 1412 { 1413 char *buf; 1414 size_t off; 1415 1416 if (!tty_term_has(tty->term, TTYC_MS)) 1417 return; 1418 1419 off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */ 1420 buf = xmalloc(off); 1421 1422 b64_ntop(ctx->ptr, ctx->num, buf, off); 1423 tty_putcode_ptr2(tty, TTYC_MS, "", buf); 1424 1425 free(buf); 1426 } 1427 1428 void 1429 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 1430 { 1431 tty_add(tty, ctx->ptr, ctx->num); 1432 tty_invalidate(tty); 1433 } 1434 1435 static void 1436 tty_cell(struct tty *tty, const struct grid_cell *gc, 1437 const struct window_pane *wp) 1438 { 1439 const struct grid_cell *gcp; 1440 1441 /* Skip last character if terminal is stupid. */ 1442 if ((tty->term->flags & TERM_EARLYWRAP) && 1443 tty->cy == tty->sy - 1 && 1444 tty->cx == tty->sx - 1) 1445 return; 1446 1447 /* If this is a padding character, do nothing. */ 1448 if (gc->flags & GRID_FLAG_PADDING) 1449 return; 1450 1451 /* Set the attributes. */ 1452 tty_attributes(tty, gc, wp); 1453 1454 /* Get the cell and if ASCII write with putc to do ACS translation. */ 1455 gcp = tty_check_codeset(tty, gc); 1456 if (gcp->data.size == 1) { 1457 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 1458 return; 1459 tty_putc(tty, *gcp->data.data); 1460 return; 1461 } 1462 1463 /* Write the data. */ 1464 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 1465 } 1466 1467 void 1468 tty_reset(struct tty *tty) 1469 { 1470 struct grid_cell *gc = &tty->cell; 1471 1472 if (!grid_cells_equal(gc, &grid_default_cell)) { 1473 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 1474 tty_putcode(tty, TTYC_RMACS); 1475 tty_putcode(tty, TTYC_SGR0); 1476 memcpy(gc, &grid_default_cell, sizeof *gc); 1477 } 1478 1479 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1480 tty->last_wp = -1; 1481 } 1482 1483 static void 1484 tty_invalidate(struct tty *tty) 1485 { 1486 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 1487 1488 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 1489 tty->last_wp = -1; 1490 1491 tty->cx = tty->cy = UINT_MAX; 1492 1493 tty->rupper = tty->rleft = UINT_MAX; 1494 tty->rlower = tty->rright = UINT_MAX; 1495 1496 if (tty->flags & TTY_STARTED) { 1497 tty_putcode(tty, TTYC_SGR0); 1498 1499 tty->mode = ALL_MODES; 1500 tty_update_mode(tty, MODE_CURSOR, NULL); 1501 1502 tty_cursor(tty, 0, 0); 1503 tty_region_off(tty); 1504 tty_margin_off(tty); 1505 } else 1506 tty->mode = MODE_CURSOR; 1507 } 1508 1509 /* Turn off margin. */ 1510 void 1511 tty_region_off(struct tty *tty) 1512 { 1513 tty_region(tty, 0, tty->sy - 1); 1514 } 1515 1516 /* Set region inside pane. */ 1517 static void 1518 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 1519 u_int rlower) 1520 { 1521 tty_region(tty, ctx->yoff + rupper, ctx->yoff + rlower); 1522 } 1523 1524 /* Set region at absolute position. */ 1525 static void 1526 tty_region(struct tty *tty, u_int rupper, u_int rlower) 1527 { 1528 if (tty->rlower == rlower && tty->rupper == rupper) 1529 return; 1530 if (!tty_term_has(tty->term, TTYC_CSR)) 1531 return; 1532 1533 tty->rupper = rupper; 1534 tty->rlower = rlower; 1535 1536 /* 1537 * Some terminals (such as PuTTY) do not correctly reset the cursor to 1538 * 0,0 if it is beyond the last column (they do not reset their wrap 1539 * flag so further output causes a line feed). As a workaround, do an 1540 * explicit move to 0 first. 1541 */ 1542 if (tty->cx >= tty->sx) 1543 tty_cursor(tty, 0, tty->cy); 1544 1545 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 1546 tty->cx = tty->cy = UINT_MAX; 1547 } 1548 1549 /* Turn off margin. */ 1550 void 1551 tty_margin_off(struct tty *tty) 1552 { 1553 tty_margin(tty, 0, tty->sx - 1); 1554 } 1555 1556 /* Set margin inside pane. */ 1557 static void 1558 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 1559 { 1560 tty_margin(tty, ctx->xoff, ctx->xoff + ctx->wp->sx - 1); 1561 } 1562 1563 /* Set margin at absolute position. */ 1564 static void 1565 tty_margin(struct tty *tty, u_int rleft, u_int rright) 1566 { 1567 char s[64]; 1568 1569 if (!tty_use_margin(tty)) 1570 return; 1571 if (tty->rleft == rleft && tty->rright == rright) 1572 return; 1573 1574 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 1575 1576 tty->rleft = rleft; 1577 tty->rright = rright; 1578 1579 if (rleft == 0 && rright == tty->sx - 1) 1580 snprintf(s, sizeof s, "\033[s"); 1581 else 1582 snprintf(s, sizeof s, "\033[%u;%us", rleft + 1, rright + 1); 1583 tty_puts(tty, s); 1584 tty->cx = tty->cy = UINT_MAX; 1585 } 1586 1587 /* 1588 * Move the cursor, unless it would wrap itself when the next character is 1589 * printed. 1590 */ 1591 static void 1592 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 1593 u_int cx, u_int cy) 1594 { 1595 if (!ctx->wrapped || 1596 !tty_pane_full_width(tty, ctx) || 1597 (tty->term->flags & TERM_EARLYWRAP) || 1598 ctx->xoff + cx != 0 || 1599 ctx->yoff + cy != tty->cy + 1 || 1600 tty->cx < tty->sx || 1601 tty->cy == tty->rlower) 1602 tty_cursor_pane(tty, ctx, cx, cy); 1603 else 1604 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 1605 } 1606 1607 /* Move cursor inside pane. */ 1608 static void 1609 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 1610 { 1611 tty_cursor(tty, ctx->xoff + cx, ctx->yoff + cy); 1612 } 1613 1614 /* Move cursor to absolute position. */ 1615 void 1616 tty_cursor(struct tty *tty, u_int cx, u_int cy) 1617 { 1618 struct tty_term *term = tty->term; 1619 u_int thisx, thisy; 1620 int change; 1621 1622 if (cx > tty->sx - 1) 1623 cx = tty->sx - 1; 1624 1625 thisx = tty->cx; 1626 thisy = tty->cy; 1627 1628 /* No change. */ 1629 if (cx == thisx && cy == thisy) 1630 return; 1631 1632 /* Very end of the line, just use absolute movement. */ 1633 if (thisx > tty->sx - 1) 1634 goto absolute; 1635 1636 /* Move to home position (0, 0). */ 1637 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 1638 tty_putcode(tty, TTYC_HOME); 1639 goto out; 1640 } 1641 1642 /* Zero on the next line. */ 1643 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 1644 (!tty_use_margin(tty) || tty->rleft == 0)) { 1645 tty_putc(tty, '\r'); 1646 tty_putc(tty, '\n'); 1647 goto out; 1648 } 1649 1650 /* Moving column or row. */ 1651 if (cy == thisy) { 1652 /* 1653 * Moving column only, row staying the same. 1654 */ 1655 1656 /* To left edge. */ 1657 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 1658 tty_putc(tty, '\r'); 1659 goto out; 1660 } 1661 1662 /* One to the left. */ 1663 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 1664 tty_putcode(tty, TTYC_CUB1); 1665 goto out; 1666 } 1667 1668 /* One to the right. */ 1669 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 1670 tty_putcode(tty, TTYC_CUF1); 1671 goto out; 1672 } 1673 1674 /* Calculate difference. */ 1675 change = thisx - cx; /* +ve left, -ve right */ 1676 1677 /* 1678 * Use HPA if change is larger than absolute, otherwise move 1679 * the cursor with CUB/CUF. 1680 */ 1681 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 1682 tty_putcode1(tty, TTYC_HPA, cx); 1683 goto out; 1684 } else if (change > 0 && tty_term_has(term, TTYC_CUB)) { 1685 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 1686 tty_putcode(tty, TTYC_CUB1); 1687 tty_putcode(tty, TTYC_CUB1); 1688 goto out; 1689 } 1690 tty_putcode1(tty, TTYC_CUB, change); 1691 goto out; 1692 } else if (change < 0 && tty_term_has(term, TTYC_CUF)) { 1693 tty_putcode1(tty, TTYC_CUF, -change); 1694 goto out; 1695 } 1696 } else if (cx == thisx) { 1697 /* 1698 * Moving row only, column staying the same. 1699 */ 1700 1701 /* One above. */ 1702 if (thisy != tty->rupper && 1703 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 1704 tty_putcode(tty, TTYC_CUU1); 1705 goto out; 1706 } 1707 1708 /* One below. */ 1709 if (thisy != tty->rlower && 1710 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 1711 tty_putcode(tty, TTYC_CUD1); 1712 goto out; 1713 } 1714 1715 /* Calculate difference. */ 1716 change = thisy - cy; /* +ve up, -ve down */ 1717 1718 /* 1719 * Try to use VPA if change is larger than absolute or if this 1720 * change would cross the scroll region, otherwise use CUU/CUD. 1721 */ 1722 if ((u_int) abs(change) > cy || 1723 (change < 0 && cy - change > tty->rlower) || 1724 (change > 0 && cy - change < tty->rupper)) { 1725 if (tty_term_has(term, TTYC_VPA)) { 1726 tty_putcode1(tty, TTYC_VPA, cy); 1727 goto out; 1728 } 1729 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 1730 tty_putcode1(tty, TTYC_CUU, change); 1731 goto out; 1732 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 1733 tty_putcode1(tty, TTYC_CUD, -change); 1734 goto out; 1735 } 1736 } 1737 1738 absolute: 1739 /* Absolute movement. */ 1740 tty_putcode2(tty, TTYC_CUP, cy, cx); 1741 1742 out: 1743 tty->cx = cx; 1744 tty->cy = cy; 1745 } 1746 1747 void 1748 tty_attributes(struct tty *tty, const struct grid_cell *gc, 1749 const struct window_pane *wp) 1750 { 1751 struct grid_cell *tc = &tty->cell, gc2; 1752 int changed; 1753 1754 /* Ignore cell if it is the same as the last one. */ 1755 if (wp != NULL && 1756 (int)wp->id == tty->last_wp && 1757 ~(wp->window->flags & WINDOW_STYLECHANGED) && 1758 gc->attr == tty->last_cell.attr && 1759 gc->fg == tty->last_cell.fg && 1760 gc->bg == tty->last_cell.bg) 1761 return; 1762 tty->last_wp = (wp != NULL ? (int)wp->id : -1); 1763 memcpy(&tty->last_cell, gc, sizeof tty->last_cell); 1764 1765 /* Copy cell and update default colours. */ 1766 memcpy(&gc2, gc, sizeof gc2); 1767 if (wp != NULL) 1768 tty_default_colours(&gc2, wp); 1769 1770 /* 1771 * If no setab, try to use the reverse attribute as a best-effort for a 1772 * non-default background. This is a bit of a hack but it doesn't do 1773 * any serious harm and makes a couple of applications happier. 1774 */ 1775 if (!tty_term_has(tty->term, TTYC_SETAB)) { 1776 if (gc2.attr & GRID_ATTR_REVERSE) { 1777 if (gc2.fg != 7 && gc2.fg != 8) 1778 gc2.attr &= ~GRID_ATTR_REVERSE; 1779 } else { 1780 if (gc2.bg != 0 && gc2.bg != 8) 1781 gc2.attr |= GRID_ATTR_REVERSE; 1782 } 1783 } 1784 1785 /* Fix up the colours if necessary. */ 1786 tty_check_fg(tty, wp, &gc2); 1787 tty_check_bg(tty, wp, &gc2); 1788 1789 /* If any bits are being cleared, reset everything. */ 1790 if (tc->attr & ~gc2.attr) 1791 tty_reset(tty); 1792 1793 /* 1794 * Set the colours. This may call tty_reset() (so it comes next) and 1795 * may add to (NOT remove) the desired attributes by changing new_attr. 1796 */ 1797 tty_colours(tty, &gc2); 1798 1799 /* Filter out attribute bits already set. */ 1800 changed = gc2.attr & ~tc->attr; 1801 tc->attr = gc2.attr; 1802 1803 /* Set the attributes. */ 1804 if (changed & GRID_ATTR_BRIGHT) 1805 tty_putcode(tty, TTYC_BOLD); 1806 if (changed & GRID_ATTR_DIM) 1807 tty_putcode(tty, TTYC_DIM); 1808 if (changed & GRID_ATTR_ITALICS) 1809 tty_set_italics(tty); 1810 if (changed & GRID_ATTR_UNDERSCORE) 1811 tty_putcode(tty, TTYC_SMUL); 1812 if (changed & GRID_ATTR_BLINK) 1813 tty_putcode(tty, TTYC_BLINK); 1814 if (changed & GRID_ATTR_REVERSE) { 1815 if (tty_term_has(tty->term, TTYC_REV)) 1816 tty_putcode(tty, TTYC_REV); 1817 else if (tty_term_has(tty->term, TTYC_SMSO)) 1818 tty_putcode(tty, TTYC_SMSO); 1819 } 1820 if (changed & GRID_ATTR_HIDDEN) 1821 tty_putcode(tty, TTYC_INVIS); 1822 if (changed & GRID_ATTR_STRIKETHROUGH) 1823 tty_putcode(tty, TTYC_SMXX); 1824 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 1825 tty_putcode(tty, TTYC_SMACS); 1826 } 1827 1828 static void 1829 tty_colours(struct tty *tty, const struct grid_cell *gc) 1830 { 1831 struct grid_cell *tc = &tty->cell; 1832 int have_ax; 1833 1834 /* No changes? Nothing is necessary. */ 1835 if (gc->fg == tc->fg && gc->bg == tc->bg) 1836 return; 1837 1838 /* 1839 * Is either the default colour? This is handled specially because the 1840 * best solution might be to reset both colours to default, in which 1841 * case if only one is default need to fall onward to set the other 1842 * colour. 1843 */ 1844 if (gc->fg == 8 || gc->bg == 8) { 1845 /* 1846 * If don't have AX but do have op, send sgr0 (op can't 1847 * actually be used because it is sometimes the same as sgr0 1848 * and sometimes isn't). This resets both colours to default. 1849 * 1850 * Otherwise, try to set the default colour only as needed. 1851 */ 1852 have_ax = tty_term_flag(tty->term, TTYC_AX); 1853 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 1854 tty_reset(tty); 1855 else { 1856 if (gc->fg == 8 && tc->fg != 8) { 1857 if (have_ax) 1858 tty_puts(tty, "\033[39m"); 1859 else if (tc->fg != 7) 1860 tty_putcode1(tty, TTYC_SETAF, 7); 1861 tc->fg = 8; 1862 } 1863 if (gc->bg == 8 && tc->bg != 8) { 1864 if (have_ax) 1865 tty_puts(tty, "\033[49m"); 1866 else if (tc->bg != 0) 1867 tty_putcode1(tty, TTYC_SETAB, 0); 1868 tc->bg = 8; 1869 } 1870 } 1871 } 1872 1873 /* Set the foreground colour. */ 1874 if (gc->fg != 8 && gc->fg != tc->fg) 1875 tty_colours_fg(tty, gc); 1876 1877 /* 1878 * Set the background colour. This must come after the foreground as 1879 * tty_colour_fg() can call tty_reset(). 1880 */ 1881 if (gc->bg != 8 && gc->bg != tc->bg) 1882 tty_colours_bg(tty, gc); 1883 } 1884 1885 static void 1886 tty_check_fg(struct tty *tty, const struct window_pane *wp, 1887 struct grid_cell *gc) 1888 { 1889 u_char r, g, b; 1890 u_int colours; 1891 int c; 1892 1893 /* 1894 * Perform substitution if this pane has a palette. If the bright 1895 * attribute is set, use the bright entry in the palette by changing to 1896 * the aixterm colour. 1897 */ 1898 if (~gc->flags & GRID_FLAG_NOPALETTE) { 1899 c = gc->fg; 1900 if (c < 8 && gc->attr & GRID_ATTR_BRIGHT) 1901 c += 90; 1902 if ((c = window_pane_get_palette(wp, c)) != -1) 1903 gc->fg = c; 1904 } 1905 1906 /* Is this a 24-bit colour? */ 1907 if (gc->fg & COLOUR_FLAG_RGB) { 1908 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 1909 if (!tty_term_has(tty->term, TTYC_SETRGBF)) { 1910 colour_split_rgb(gc->fg, &r, &g, &b); 1911 gc->fg = colour_find_rgb(r, g, b); 1912 } else 1913 return; 1914 } 1915 1916 /* How many colours does this terminal have? */ 1917 if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS) 1918 colours = 256; 1919 else 1920 colours = tty_term_number(tty->term, TTYC_COLORS); 1921 1922 /* Is this a 256-colour colour? */ 1923 if (gc->fg & COLOUR_FLAG_256) { 1924 /* And not a 256 colour mode? */ 1925 if (colours != 256) { 1926 gc->fg = colour_256to16(gc->fg); 1927 if (gc->fg & 8) { 1928 gc->fg &= 7; 1929 if (colours >= 16) 1930 gc->fg += 90; 1931 else 1932 gc->attr |= GRID_ATTR_BRIGHT; 1933 } else 1934 gc->attr &= ~GRID_ATTR_BRIGHT; 1935 } 1936 return; 1937 } 1938 1939 /* Is this an aixterm colour? */ 1940 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 1941 gc->fg -= 90; 1942 gc->attr |= GRID_ATTR_BRIGHT; 1943 } 1944 } 1945 1946 static void 1947 tty_check_bg(struct tty *tty, const struct window_pane *wp, 1948 struct grid_cell *gc) 1949 { 1950 u_char r, g, b; 1951 u_int colours; 1952 int c; 1953 1954 /* Perform substitution if this pane has a palette. */ 1955 if (~gc->flags & GRID_FLAG_NOPALETTE) { 1956 if ((c = window_pane_get_palette(wp, gc->bg)) != -1) 1957 gc->bg = c; 1958 } 1959 1960 /* Is this a 24-bit colour? */ 1961 if (gc->bg & COLOUR_FLAG_RGB) { 1962 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 1963 if (!tty_term_has(tty->term, TTYC_SETRGBB)) { 1964 colour_split_rgb(gc->bg, &r, &g, &b); 1965 gc->bg = colour_find_rgb(r, g, b); 1966 } else 1967 return; 1968 } 1969 1970 /* How many colours does this terminal have? */ 1971 if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS) 1972 colours = 256; 1973 else 1974 colours = tty_term_number(tty->term, TTYC_COLORS); 1975 1976 /* Is this a 256-colour colour? */ 1977 if (gc->bg & COLOUR_FLAG_256) { 1978 /* 1979 * And not a 256 colour mode? Translate to 16-colour 1980 * palette. Bold background doesn't exist portably, so just 1981 * discard the bold bit if set. 1982 */ 1983 if (colours != 256) { 1984 gc->bg = colour_256to16(gc->bg); 1985 if (gc->bg & 8) { 1986 gc->bg &= 7; 1987 if (colours >= 16) 1988 gc->fg += 90; 1989 } 1990 } 1991 return; 1992 } 1993 1994 /* Is this an aixterm colour? */ 1995 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 1996 gc->bg -= 90; 1997 } 1998 1999 static void 2000 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2001 { 2002 struct grid_cell *tc = &tty->cell; 2003 char s[32]; 2004 2005 /* Is this a 24-bit or 256-colour colour? */ 2006 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2007 if (tty_try_colour(tty, gc->fg, "38") == 0) 2008 goto save_fg; 2009 /* Should not get here, already converted in tty_check_fg. */ 2010 return; 2011 } 2012 2013 /* Is this an aixterm bright colour? */ 2014 if (gc->fg >= 90 && gc->fg <= 97) { 2015 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2016 tty_puts(tty, s); 2017 goto save_fg; 2018 } 2019 2020 /* Otherwise set the foreground colour. */ 2021 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2022 2023 save_fg: 2024 /* Save the new values in the terminal current cell. */ 2025 tc->fg = gc->fg; 2026 } 2027 2028 static void 2029 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2030 { 2031 struct grid_cell *tc = &tty->cell; 2032 char s[32]; 2033 2034 /* Is this a 24-bit or 256-colour colour? */ 2035 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2036 if (tty_try_colour(tty, gc->bg, "48") == 0) 2037 goto save_bg; 2038 /* Should not get here, already converted in tty_check_bg. */ 2039 return; 2040 } 2041 2042 /* Is this an aixterm bright colour? */ 2043 if (gc->bg >= 90 && gc->bg <= 97) { 2044 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2045 tty_puts(tty, s); 2046 goto save_bg; 2047 } 2048 2049 /* Otherwise set the background colour. */ 2050 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2051 2052 save_bg: 2053 /* Save the new values in the terminal current cell. */ 2054 tc->bg = gc->bg; 2055 } 2056 2057 static int 2058 tty_try_colour(struct tty *tty, int colour, const char *type) 2059 { 2060 u_char r, g, b; 2061 char s[32]; 2062 2063 if (colour & COLOUR_FLAG_256) { 2064 /* 2065 * If the user has specified -2 to the client (meaning 2066 * TERM_256COLOURS is set), setaf and setab may not work (or 2067 * they may not want to use them), so send the usual sequence. 2068 * 2069 * Also if RGB is set, setaf and setab do not support the 256 2070 * colour palette so use the sequences directly there too. 2071 */ 2072 if ((tty->term_flags & TERM_256COLOURS) || 2073 tty_term_has(tty->term, TTYC_RGB)) 2074 goto fallback_256; 2075 2076 /* 2077 * If the terminfo entry has 256 colours and setaf and setab 2078 * exist, assume that they work correctly. 2079 */ 2080 if (tty->term->flags & TERM_256COLOURS) { 2081 if (*type == '3') { 2082 if (!tty_term_has(tty->term, TTYC_SETAF)) 2083 goto fallback_256; 2084 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2085 } else { 2086 if (!tty_term_has(tty->term, TTYC_SETAB)) 2087 goto fallback_256; 2088 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2089 } 2090 return (0); 2091 } 2092 goto fallback_256; 2093 } 2094 2095 if (colour & COLOUR_FLAG_RGB) { 2096 if (*type == '3') { 2097 if (!tty_term_has(tty->term, TTYC_SETRGBF)) 2098 return (-1); 2099 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2100 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2101 } else { 2102 if (!tty_term_has(tty->term, TTYC_SETRGBB)) 2103 return (-1); 2104 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2105 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2106 } 2107 return (0); 2108 } 2109 2110 return (-1); 2111 2112 fallback_256: 2113 xsnprintf(s, sizeof s, "\033[%s;5;%dm", type, colour & 0xff); 2114 log_debug("%s: 256 colour fallback: %s", tty->client->name, s); 2115 tty_puts(tty, s); 2116 return (0); 2117 } 2118 2119 static void 2120 tty_default_colours(struct grid_cell *gc, const struct window_pane *wp) 2121 { 2122 struct window *w = wp->window; 2123 struct options *oo = w->options; 2124 const struct grid_cell *agc, *pgc, *wgc; 2125 int c; 2126 2127 if (w->flags & WINDOW_STYLECHANGED) { 2128 w->flags &= ~WINDOW_STYLECHANGED; 2129 agc = options_get_style(oo, "window-active-style"); 2130 memcpy(&w->active_style, agc, sizeof w->active_style); 2131 wgc = options_get_style(oo, "window-style"); 2132 memcpy(&w->style, wgc, sizeof w->style); 2133 } else { 2134 agc = &w->active_style; 2135 wgc = &w->style; 2136 } 2137 pgc = &wp->colgc; 2138 2139 if (gc->fg == 8) { 2140 if (pgc->fg != 8) 2141 gc->fg = pgc->fg; 2142 else if (wp == w->active && agc->fg != 8) 2143 gc->fg = agc->fg; 2144 else 2145 gc->fg = wgc->fg; 2146 2147 if (gc->fg != 8 && 2148 (c = window_pane_get_palette(wp, gc->fg)) != -1) 2149 gc->fg = c; 2150 } 2151 2152 if (gc->bg == 8) { 2153 if (pgc->bg != 8) 2154 gc->bg = pgc->bg; 2155 else if (wp == w->active && agc->bg != 8) 2156 gc->bg = agc->bg; 2157 else 2158 gc->bg = wgc->bg; 2159 2160 if (gc->bg != 8 && 2161 (c = window_pane_get_palette(wp, gc->bg)) != -1) 2162 gc->bg = c; 2163 } 2164 } 2165 2166 static void 2167 tty_default_attributes(struct tty *tty, const struct window_pane *wp, u_int bg) 2168 { 2169 static struct grid_cell gc; 2170 2171 memcpy(&gc, &grid_default_cell, sizeof gc); 2172 gc.bg = bg; 2173 tty_attributes(tty, &gc, wp); 2174 } 2175