1 /* $OpenBSD: tty.c,v 1.426 2023/01/03 11:43:24 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 *, int); 42 static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int, 43 u_int); 44 static void tty_cursor_pane_unless_wrap(struct tty *, 45 const struct tty_ctx *, u_int, u_int); 46 static void tty_invalidate(struct tty *); 47 static void tty_colours(struct tty *, const struct grid_cell *); 48 static void tty_check_fg(struct tty *, struct colour_palette *, 49 struct grid_cell *); 50 static void tty_check_bg(struct tty *, struct colour_palette *, 51 struct grid_cell *); 52 static void tty_check_us(struct tty *, struct colour_palette *, 53 struct grid_cell *); 54 static void tty_colours_fg(struct tty *, const struct grid_cell *); 55 static void tty_colours_bg(struct tty *, const struct grid_cell *); 56 static void tty_colours_us(struct tty *, const struct grid_cell *); 57 58 static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int, 59 u_int); 60 static void tty_region(struct tty *, u_int, u_int); 61 static void tty_margin_pane(struct tty *, const struct tty_ctx *); 62 static void tty_margin(struct tty *, u_int, u_int); 63 static int tty_large_region(struct tty *, const struct tty_ctx *); 64 static int tty_fake_bce(const struct tty *, const struct grid_cell *, 65 u_int); 66 static void tty_redraw_region(struct tty *, const struct tty_ctx *); 67 static void tty_emulate_repeat(struct tty *, enum tty_code_code, 68 enum tty_code_code, u_int); 69 static void tty_repeat_space(struct tty *, u_int); 70 static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int); 71 static void tty_default_attributes(struct tty *, const struct grid_cell *, 72 struct colour_palette *, u_int, struct hyperlinks *); 73 static int tty_check_overlay(struct tty *, u_int, u_int); 74 static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int, 75 struct overlay_ranges *); 76 77 #define tty_use_margin(tty) \ 78 (tty->term->flags & TERM_DECSLRM) 79 #define tty_full_width(tty, ctx) \ 80 ((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx) 81 82 #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */) 83 #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8) 84 #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8) 85 86 #define TTY_QUERY_TIMEOUT 5 87 88 void 89 tty_create_log(void) 90 { 91 char name[64]; 92 93 xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid()); 94 95 tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644); 96 if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1) 97 fatal("fcntl failed"); 98 } 99 100 int 101 tty_init(struct tty *tty, struct client *c) 102 { 103 if (!isatty(c->fd)) 104 return (-1); 105 106 memset(tty, 0, sizeof *tty); 107 tty->client = c; 108 109 tty->cstyle = SCREEN_CURSOR_DEFAULT; 110 tty->ccolour = -1; 111 tty->fg = tty->bg = -1; 112 113 if (tcgetattr(c->fd, &tty->tio) != 0) 114 return (-1); 115 return (0); 116 } 117 118 void 119 tty_resize(struct tty *tty) 120 { 121 struct client *c = tty->client; 122 struct winsize ws; 123 u_int sx, sy, xpixel, ypixel; 124 125 if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) { 126 sx = ws.ws_col; 127 if (sx == 0) { 128 sx = 80; 129 xpixel = 0; 130 } else 131 xpixel = ws.ws_xpixel / sx; 132 sy = ws.ws_row; 133 if (sy == 0) { 134 sy = 24; 135 ypixel = 0; 136 } else 137 ypixel = ws.ws_ypixel / sy; 138 } else { 139 sx = 80; 140 sy = 24; 141 xpixel = 0; 142 ypixel = 0; 143 } 144 log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy, 145 xpixel, ypixel); 146 tty_set_size(tty, sx, sy, xpixel, ypixel); 147 tty_invalidate(tty); 148 } 149 150 void 151 tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel) 152 { 153 tty->sx = sx; 154 tty->sy = sy; 155 tty->xpixel = xpixel; 156 tty->ypixel = ypixel; 157 } 158 159 static void 160 tty_read_callback(__unused int fd, __unused short events, void *data) 161 { 162 struct tty *tty = data; 163 struct client *c = tty->client; 164 const char *name = c->name; 165 size_t size = EVBUFFER_LENGTH(tty->in); 166 int nread; 167 168 nread = evbuffer_read(tty->in, c->fd, -1); 169 if (nread == 0 || nread == -1) { 170 if (nread == 0) 171 log_debug("%s: read closed", name); 172 else 173 log_debug("%s: read error: %s", name, strerror(errno)); 174 event_del(&tty->event_in); 175 server_client_lost(tty->client); 176 return; 177 } 178 log_debug("%s: read %d bytes (already %zu)", name, nread, size); 179 180 while (tty_keys_next(tty)) 181 ; 182 } 183 184 static void 185 tty_timer_callback(__unused int fd, __unused short events, void *data) 186 { 187 struct tty *tty = data; 188 struct client *c = tty->client; 189 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 190 191 log_debug("%s: %zu discarded", c->name, tty->discarded); 192 193 c->flags |= CLIENT_ALLREDRAWFLAGS; 194 c->discarded += tty->discarded; 195 196 if (tty->discarded < TTY_BLOCK_STOP(tty)) { 197 tty->flags &= ~TTY_BLOCK; 198 tty_invalidate(tty); 199 return; 200 } 201 tty->discarded = 0; 202 evtimer_add(&tty->timer, &tv); 203 } 204 205 static int 206 tty_block_maybe(struct tty *tty) 207 { 208 struct client *c = tty->client; 209 size_t size = EVBUFFER_LENGTH(tty->out); 210 struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL }; 211 212 if (size == 0) 213 tty->flags &= ~TTY_NOBLOCK; 214 else if (tty->flags & TTY_NOBLOCK) 215 return (0); 216 217 if (size < TTY_BLOCK_START(tty)) 218 return (0); 219 220 if (tty->flags & TTY_BLOCK) 221 return (1); 222 tty->flags |= TTY_BLOCK; 223 224 log_debug("%s: can't keep up, %zu discarded", c->name, size); 225 226 evbuffer_drain(tty->out, size); 227 c->discarded += size; 228 229 tty->discarded = 0; 230 evtimer_add(&tty->timer, &tv); 231 return (1); 232 } 233 234 static void 235 tty_write_callback(__unused int fd, __unused short events, void *data) 236 { 237 struct tty *tty = data; 238 struct client *c = tty->client; 239 size_t size = EVBUFFER_LENGTH(tty->out); 240 int nwrite; 241 242 nwrite = evbuffer_write(tty->out, c->fd); 243 if (nwrite == -1) 244 return; 245 log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size); 246 247 if (c->redraw > 0) { 248 if ((size_t)nwrite >= c->redraw) 249 c->redraw = 0; 250 else 251 c->redraw -= nwrite; 252 log_debug("%s: waiting for redraw, %zu bytes left", c->name, 253 c->redraw); 254 } else if (tty_block_maybe(tty)) 255 return; 256 257 if (EVBUFFER_LENGTH(tty->out) != 0) 258 event_add(&tty->event_out, NULL); 259 } 260 261 int 262 tty_open(struct tty *tty, char **cause) 263 { 264 struct client *c = tty->client; 265 266 tty->term = tty_term_create(tty, c->term_name, c->term_caps, 267 c->term_ncaps, &c->term_features, cause); 268 if (tty->term == NULL) { 269 tty_close(tty); 270 return (-1); 271 } 272 tty->flags |= TTY_OPENED; 273 274 tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER); 275 276 event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ, 277 tty_read_callback, tty); 278 tty->in = evbuffer_new(); 279 if (tty->in == NULL) 280 fatal("out of memory"); 281 282 event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty); 283 tty->out = evbuffer_new(); 284 if (tty->out == NULL) 285 fatal("out of memory"); 286 287 evtimer_set(&tty->timer, tty_timer_callback, tty); 288 289 tty_start_tty(tty); 290 tty_keys_build(tty); 291 292 return (0); 293 } 294 295 static void 296 tty_start_timer_callback(__unused int fd, __unused short events, void *data) 297 { 298 struct tty *tty = data; 299 struct client *c = tty->client; 300 301 log_debug("%s: start timer fired", c->name); 302 if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0) 303 tty_update_features(tty); 304 tty->flags |= TTY_ALL_REQUEST_FLAGS; 305 } 306 307 void 308 tty_start_tty(struct tty *tty) 309 { 310 struct client *c = tty->client; 311 struct termios tio; 312 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 313 314 setblocking(c->fd, 0); 315 event_add(&tty->event_in, NULL); 316 317 memcpy(&tio, &tty->tio, sizeof tio); 318 tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP); 319 tio.c_iflag |= IGNBRK; 320 tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET); 321 tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT| 322 ECHOKE|ISIG); 323 tio.c_cc[VMIN] = 1; 324 tio.c_cc[VTIME] = 0; 325 if (tcsetattr(c->fd, TCSANOW, &tio) == 0) 326 tcflush(c->fd, TCOFLUSH); 327 328 tty_putcode(tty, TTYC_SMCUP); 329 330 tty_putcode(tty, TTYC_SMKX); 331 tty_putcode(tty, TTYC_CLEAR); 332 333 if (tty_acs_needed(tty)) { 334 log_debug("%s: using capabilities for ACS", c->name); 335 tty_putcode(tty, TTYC_ENACS); 336 } else 337 log_debug("%s: using UTF-8 for ACS", c->name); 338 339 tty_putcode(tty, TTYC_CNORM); 340 if (tty_term_has(tty->term, TTYC_KMOUS)) { 341 tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l"); 342 tty_puts(tty, "\033[?1006l\033[?1005l"); 343 } 344 345 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 346 evtimer_add(&tty->start_timer, &tv); 347 348 tty->flags |= TTY_STARTED; 349 tty_invalidate(tty); 350 351 if (tty->ccolour != -1) 352 tty_force_cursor_colour(tty, -1); 353 354 tty->mouse_drag_flag = 0; 355 tty->mouse_drag_update = NULL; 356 tty->mouse_drag_release = NULL; 357 } 358 359 void 360 tty_send_requests(struct tty *tty) 361 { 362 if (~tty->flags & TTY_STARTED) 363 return; 364 365 if (tty->term->flags & TERM_VT100LIKE) { 366 if (~tty->term->flags & TTY_HAVEDA) 367 tty_puts(tty, "\033[c"); 368 if (~tty->flags & TTY_HAVEDA2) 369 tty_puts(tty, "\033[>c"); 370 if (~tty->flags & TTY_HAVEXDA) 371 tty_puts(tty, "\033[>q"); 372 if (~tty->flags & TTY_HAVEFG) 373 tty_puts(tty, "\033]10;?\033\\"); 374 if (~tty->flags & TTY_HAVEBG) 375 tty_puts(tty, "\033]11;?\033\\"); 376 } else 377 tty->flags |= TTY_ALL_REQUEST_FLAGS; 378 } 379 380 void 381 tty_stop_tty(struct tty *tty) 382 { 383 struct client *c = tty->client; 384 struct winsize ws; 385 386 if (!(tty->flags & TTY_STARTED)) 387 return; 388 tty->flags &= ~TTY_STARTED; 389 390 evtimer_del(&tty->start_timer); 391 392 event_del(&tty->timer); 393 tty->flags &= ~TTY_BLOCK; 394 395 event_del(&tty->event_in); 396 event_del(&tty->event_out); 397 398 /* 399 * Be flexible about error handling and try not kill the server just 400 * because the fd is invalid. Things like ssh -t can easily leave us 401 * with a dead tty. 402 */ 403 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 404 return; 405 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 406 return; 407 408 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 409 if (tty_acs_needed(tty)) 410 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 411 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 412 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 413 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 414 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 415 if (tty_term_has(tty->term, TTYC_SE)) 416 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 417 else if (tty_term_has(tty->term, TTYC_SS)) 418 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0)); 419 } 420 if (tty->mode & MODE_BRACKETPASTE) 421 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 422 if (tty->ccolour != -1) 423 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 424 425 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 426 if (tty_term_has(tty->term, TTYC_KMOUS)) { 427 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 428 tty_raw(tty, "\033[?1006l\033[?1005l"); 429 } 430 431 if (tty->term->flags & TERM_VT100LIKE) 432 tty_raw(tty, "\033[?7727l"); 433 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 434 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 435 436 if (tty_use_margin(tty)) 437 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 438 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 439 440 setblocking(c->fd, 1); 441 } 442 443 void 444 tty_close(struct tty *tty) 445 { 446 if (event_initialized(&tty->key_timer)) 447 evtimer_del(&tty->key_timer); 448 tty_stop_tty(tty); 449 450 if (tty->flags & TTY_OPENED) { 451 evbuffer_free(tty->in); 452 event_del(&tty->event_in); 453 evbuffer_free(tty->out); 454 event_del(&tty->event_out); 455 456 tty_term_free(tty->term); 457 tty_keys_free(tty); 458 459 tty->flags &= ~TTY_OPENED; 460 } 461 } 462 463 void 464 tty_free(struct tty *tty) 465 { 466 tty_close(tty); 467 } 468 469 void 470 tty_update_features(struct tty *tty) 471 { 472 struct client *c = tty->client; 473 474 if (tty_apply_features(tty->term, c->term_features)) 475 tty_term_apply_overrides(tty->term); 476 477 if (tty_use_margin(tty)) 478 tty_putcode(tty, TTYC_ENMG); 479 if (options_get_number(global_options, "extended-keys")) 480 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 481 if (options_get_number(global_options, "focus-events")) 482 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 483 if (tty->term->flags & TERM_VT100LIKE) 484 tty_puts(tty, "\033[?7727h"); 485 } 486 487 void 488 tty_raw(struct tty *tty, const char *s) 489 { 490 struct client *c = tty->client; 491 ssize_t n, slen; 492 u_int i; 493 494 slen = strlen(s); 495 for (i = 0; i < 5; i++) { 496 n = write(c->fd, s, slen); 497 if (n >= 0) { 498 s += n; 499 slen -= n; 500 if (slen == 0) 501 break; 502 } else if (n == -1 && errno != EAGAIN) 503 break; 504 usleep(100); 505 } 506 } 507 508 void 509 tty_putcode(struct tty *tty, enum tty_code_code code) 510 { 511 tty_puts(tty, tty_term_string(tty->term, code)); 512 } 513 514 void 515 tty_putcode1(struct tty *tty, enum tty_code_code code, int a) 516 { 517 if (a < 0) 518 return; 519 tty_puts(tty, tty_term_string1(tty->term, code, a)); 520 } 521 522 void 523 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) 524 { 525 if (a < 0 || b < 0) 526 return; 527 tty_puts(tty, tty_term_string2(tty->term, code, a, b)); 528 } 529 530 void 531 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c) 532 { 533 if (a < 0 || b < 0 || c < 0) 534 return; 535 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c)); 536 } 537 538 void 539 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a) 540 { 541 if (a != NULL) 542 tty_puts(tty, tty_term_ptr1(tty->term, code, a)); 543 } 544 545 void 546 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, 547 const void *b) 548 { 549 if (a != NULL && b != NULL) 550 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b)); 551 } 552 553 static void 554 tty_add(struct tty *tty, const char *buf, size_t len) 555 { 556 struct client *c = tty->client; 557 558 if (tty->flags & TTY_BLOCK) { 559 tty->discarded += len; 560 return; 561 } 562 563 evbuffer_add(tty->out, buf, len); 564 log_debug("%s: %.*s", c->name, (int)len, buf); 565 c->written += len; 566 567 if (tty_log_fd != -1) 568 write(tty_log_fd, buf, len); 569 if (tty->flags & TTY_STARTED) 570 event_add(&tty->event_out, NULL); 571 } 572 573 void 574 tty_puts(struct tty *tty, const char *s) 575 { 576 if (*s != '\0') 577 tty_add(tty, s, strlen(s)); 578 } 579 580 void 581 tty_putc(struct tty *tty, u_char ch) 582 { 583 const char *acs; 584 585 if ((tty->term->flags & TERM_NOAM) && 586 ch >= 0x20 && ch != 0x7f && 587 tty->cy == tty->sy - 1 && 588 tty->cx + 1 >= tty->sx) 589 return; 590 591 if (tty->cell.attr & GRID_ATTR_CHARSET) { 592 acs = tty_acs_get(tty, ch); 593 if (acs != NULL) 594 tty_add(tty, acs, strlen(acs)); 595 else 596 tty_add(tty, &ch, 1); 597 } else 598 tty_add(tty, &ch, 1); 599 600 if (ch >= 0x20 && ch != 0x7f) { 601 if (tty->cx >= tty->sx) { 602 tty->cx = 1; 603 if (tty->cy != tty->rlower) 604 tty->cy++; 605 606 /* 607 * On !am terminals, force the cursor position to where 608 * we think it should be after a line wrap - this means 609 * it works on sensible terminals as well. 610 */ 611 if (tty->term->flags & TERM_NOAM) 612 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); 613 } else 614 tty->cx++; 615 } 616 } 617 618 void 619 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 620 { 621 if ((tty->term->flags & TERM_NOAM) && 622 tty->cy == tty->sy - 1 && 623 tty->cx + len >= tty->sx) 624 len = tty->sx - tty->cx - 1; 625 626 tty_add(tty, buf, len); 627 if (tty->cx + width > tty->sx) { 628 tty->cx = (tty->cx + width) - tty->sx; 629 if (tty->cx <= tty->sx) 630 tty->cy++; 631 else 632 tty->cx = tty->cy = UINT_MAX; 633 } else 634 tty->cx += width; 635 } 636 637 static void 638 tty_set_italics(struct tty *tty) 639 { 640 const char *s; 641 642 if (tty_term_has(tty->term, TTYC_SITM)) { 643 s = options_get_string(global_options, "default-terminal"); 644 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 645 tty_putcode(tty, TTYC_SITM); 646 return; 647 } 648 } 649 tty_putcode(tty, TTYC_SMSO); 650 } 651 652 void 653 tty_set_title(struct tty *tty, const char *title) 654 { 655 if (!tty_term_has(tty->term, TTYC_TSL) || 656 !tty_term_has(tty->term, TTYC_FSL)) 657 return; 658 659 tty_putcode(tty, TTYC_TSL); 660 tty_puts(tty, title); 661 tty_putcode(tty, TTYC_FSL); 662 } 663 664 void 665 tty_set_path(struct tty *tty, const char *title) 666 { 667 if (!tty_term_has(tty->term, TTYC_SWD) || 668 !tty_term_has(tty->term, TTYC_FSL)) 669 return; 670 671 tty_putcode(tty, TTYC_SWD); 672 tty_puts(tty, title); 673 tty_putcode(tty, TTYC_FSL); 674 } 675 676 static void 677 tty_force_cursor_colour(struct tty *tty, int c) 678 { 679 u_char r, g, b; 680 char s[13]; 681 682 if (c != -1) 683 c = colour_force_rgb(c); 684 if (c == tty->ccolour) 685 return; 686 if (c == -1) 687 tty_putcode(tty, TTYC_CR); 688 else { 689 colour_split_rgb(c, &r, &g, &b); 690 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 691 tty_putcode_ptr1(tty, TTYC_CS, s); 692 } 693 tty->ccolour = c; 694 } 695 696 static int 697 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 698 { 699 enum screen_cursor_style cstyle; 700 int ccolour, changed, cmode = mode; 701 702 /* Set cursor colour if changed. */ 703 if (s != NULL) { 704 ccolour = s->ccolour; 705 if (s->ccolour == -1) 706 ccolour = s->default_ccolour; 707 tty_force_cursor_colour(tty, ccolour); 708 } 709 710 /* If cursor is off, set as invisible. */ 711 if (~cmode & MODE_CURSOR) { 712 if (tty->mode & MODE_CURSOR) 713 tty_putcode(tty, TTYC_CIVIS); 714 return (cmode); 715 } 716 717 /* Check if blinking or very visible flag changed or style changed. */ 718 if (s == NULL) 719 cstyle = tty->cstyle; 720 else { 721 cstyle = s->cstyle; 722 if (cstyle == SCREEN_CURSOR_DEFAULT) { 723 if (~cmode & MODE_CURSOR_BLINKING_SET) { 724 if (s->default_mode & MODE_CURSOR_BLINKING) 725 cmode |= MODE_CURSOR_BLINKING; 726 else 727 cmode &= ~MODE_CURSOR_BLINKING; 728 } 729 cstyle = s->default_cstyle; 730 } 731 } 732 733 /* If nothing changed, do nothing. */ 734 changed = cmode ^ tty->mode; 735 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 736 return (cmode); 737 738 /* 739 * Set cursor style. If an explicit style has been set with DECSCUSR, 740 * set it if supported, otherwise send cvvis for blinking styles. 741 * 742 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 743 * if either the blinking or very visible flags are set. 744 */ 745 tty_putcode(tty, TTYC_CNORM); 746 switch (cstyle) { 747 case SCREEN_CURSOR_DEFAULT: 748 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 749 if (tty_term_has(tty->term, TTYC_SE)) 750 tty_putcode(tty, TTYC_SE); 751 else 752 tty_putcode1(tty, TTYC_SS, 0); 753 } 754 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 755 tty_putcode(tty, TTYC_CVVIS); 756 break; 757 case SCREEN_CURSOR_BLOCK: 758 if (tty_term_has(tty->term, TTYC_SS)) { 759 if (cmode & MODE_CURSOR_BLINKING) 760 tty_putcode1(tty, TTYC_SS, 1); 761 else 762 tty_putcode1(tty, TTYC_SS, 2); 763 } else if (cmode & MODE_CURSOR_BLINKING) 764 tty_putcode(tty, TTYC_CVVIS); 765 break; 766 case SCREEN_CURSOR_UNDERLINE: 767 if (tty_term_has(tty->term, TTYC_SS)) { 768 if (cmode & MODE_CURSOR_BLINKING) 769 tty_putcode1(tty, TTYC_SS, 3); 770 else 771 tty_putcode1(tty, TTYC_SS, 4); 772 } else if (cmode & MODE_CURSOR_BLINKING) 773 tty_putcode(tty, TTYC_CVVIS); 774 break; 775 case SCREEN_CURSOR_BAR: 776 if (tty_term_has(tty->term, TTYC_SS)) { 777 if (cmode & MODE_CURSOR_BLINKING) 778 tty_putcode1(tty, TTYC_SS, 5); 779 else 780 tty_putcode1(tty, TTYC_SS, 6); 781 } else if (cmode & MODE_CURSOR_BLINKING) 782 tty_putcode(tty, TTYC_CVVIS); 783 break; 784 } 785 tty->cstyle = cstyle; 786 return (cmode); 787 } 788 789 void 790 tty_update_mode(struct tty *tty, int mode, struct screen *s) 791 { 792 struct tty_term *term = tty->term; 793 struct client *c = tty->client; 794 int changed; 795 796 if (tty->flags & TTY_NOCURSOR) 797 mode &= ~MODE_CURSOR; 798 799 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 800 mode |= MODE_CURSOR_BLINKING; 801 else 802 mode &= ~MODE_CURSOR_BLINKING; 803 804 changed = mode ^ tty->mode; 805 if (log_get_level() != 0 && changed != 0) { 806 log_debug("%s: current mode %s", c->name, 807 screen_mode_to_string(tty->mode)); 808 log_debug("%s: setting mode %s", c->name, 809 screen_mode_to_string(mode)); 810 } 811 812 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 813 /* 814 * If the mouse modes have changed, clear then all and apply 815 * again. There are differences in how terminals track the 816 * various bits. 817 */ 818 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 819 if (mode & ALL_MOUSE_MODES) 820 tty_puts(tty, "\033[?1006h"); 821 if (mode & MODE_MOUSE_ALL) 822 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 823 else if (mode & MODE_MOUSE_BUTTON) 824 tty_puts(tty, "\033[?1000h\033[?1002h"); 825 else if (mode & MODE_MOUSE_STANDARD) 826 tty_puts(tty, "\033[?1000h"); 827 } 828 if (changed & MODE_BRACKETPASTE) { 829 if (mode & MODE_BRACKETPASTE) 830 tty_putcode(tty, TTYC_ENBP); 831 else 832 tty_putcode(tty, TTYC_DSBP); 833 } 834 tty->mode = mode; 835 } 836 837 static void 838 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 839 enum tty_code_code code1, u_int n) 840 { 841 if (tty_term_has(tty->term, code)) 842 tty_putcode1(tty, code, n); 843 else { 844 while (n-- > 0) 845 tty_putcode(tty, code1); 846 } 847 } 848 849 static void 850 tty_repeat_space(struct tty *tty, u_int n) 851 { 852 static char s[500]; 853 854 if (*s != ' ') 855 memset(s, ' ', sizeof s); 856 857 while (n > sizeof s) { 858 tty_putn(tty, s, sizeof s, sizeof s); 859 n -= sizeof s; 860 } 861 if (n != 0) 862 tty_putn(tty, s, n, n); 863 } 864 865 /* Is this window bigger than the terminal? */ 866 int 867 tty_window_bigger(struct tty *tty) 868 { 869 struct client *c = tty->client; 870 struct window *w = c->session->curw->window; 871 872 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 873 } 874 875 /* What offset should this window be drawn at? */ 876 int 877 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 878 { 879 *ox = tty->oox; 880 *oy = tty->ooy; 881 *sx = tty->osx; 882 *sy = tty->osy; 883 884 return (tty->oflag); 885 } 886 887 /* What offset should this window be drawn at? */ 888 static int 889 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 890 { 891 struct client *c = tty->client; 892 struct window *w = c->session->curw->window; 893 struct window_pane *wp = server_client_get_pane(c); 894 u_int cx, cy, lines; 895 896 lines = status_line_size(c); 897 898 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 899 *ox = 0; 900 *oy = 0; 901 *sx = w->sx; 902 *sy = w->sy; 903 904 c->pan_window = NULL; 905 return (0); 906 } 907 908 *sx = tty->sx; 909 *sy = tty->sy - lines; 910 911 if (c->pan_window == w) { 912 if (*sx >= w->sx) 913 c->pan_ox = 0; 914 else if (c->pan_ox + *sx > w->sx) 915 c->pan_ox = w->sx - *sx; 916 *ox = c->pan_ox; 917 if (*sy >= w->sy) 918 c->pan_oy = 0; 919 else if (c->pan_oy + *sy > w->sy) 920 c->pan_oy = w->sy - *sy; 921 *oy = c->pan_oy; 922 return (1); 923 } 924 925 if (~wp->screen->mode & MODE_CURSOR) { 926 *ox = 0; 927 *oy = 0; 928 } else { 929 cx = wp->xoff + wp->screen->cx; 930 cy = wp->yoff + wp->screen->cy; 931 932 if (cx < *sx) 933 *ox = 0; 934 else if (cx > w->sx - *sx) 935 *ox = w->sx - *sx; 936 else 937 *ox = cx - *sx / 2; 938 939 if (cy < *sy) 940 *oy = 0; 941 else if (cy > w->sy - *sy) 942 *oy = w->sy - *sy; 943 else 944 *oy = cy - *sy / 2; 945 } 946 947 c->pan_window = NULL; 948 return (1); 949 } 950 951 /* Update stored offsets for a window and redraw if necessary. */ 952 void 953 tty_update_window_offset(struct window *w) 954 { 955 struct client *c; 956 957 TAILQ_FOREACH(c, &clients, entry) { 958 if (c->session != NULL && 959 c->session->curw != NULL && 960 c->session->curw->window == w) 961 tty_update_client_offset(c); 962 } 963 } 964 965 /* Update stored offsets for a client and redraw if necessary. */ 966 void 967 tty_update_client_offset(struct client *c) 968 { 969 u_int ox, oy, sx, sy; 970 971 if (~c->flags & CLIENT_TERMINAL) 972 return; 973 974 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 975 if (ox == c->tty.oox && 976 oy == c->tty.ooy && 977 sx == c->tty.osx && 978 sy == c->tty.osy) 979 return; 980 981 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 982 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 983 ox, oy, sx, sy); 984 985 c->tty.oox = ox; 986 c->tty.ooy = oy; 987 c->tty.osx = sx; 988 c->tty.osy = sy; 989 990 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 991 } 992 993 /* 994 * Is the region large enough to be worth redrawing once later rather than 995 * probably several times now? Currently yes if it is more than 50% of the 996 * pane. 997 */ 998 static int 999 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 1000 { 1001 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 1002 } 1003 1004 /* 1005 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1006 * emulated. 1007 */ 1008 static int 1009 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1010 { 1011 if (tty_term_flag(tty->term, TTYC_BCE)) 1012 return (0); 1013 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1014 return (1); 1015 return (0); 1016 } 1017 1018 /* 1019 * Redraw scroll region using data from screen (already updated). Used when 1020 * CSR not supported, or window is a pane that doesn't take up the full 1021 * width of the terminal. 1022 */ 1023 static void 1024 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1025 { 1026 struct client *c = tty->client; 1027 u_int i; 1028 1029 /* 1030 * If region is large, schedule a redraw. In most cases this is likely 1031 * to be followed by some more scrolling. 1032 */ 1033 if (tty_large_region(tty, ctx)) { 1034 log_debug("%s: %s large redraw", __func__, c->name); 1035 ctx->redraw_cb(ctx); 1036 return; 1037 } 1038 1039 for (i = ctx->orupper; i <= ctx->orlower; i++) 1040 tty_draw_pane(tty, ctx, i); 1041 } 1042 1043 /* Is this position visible in the pane? */ 1044 static int 1045 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1046 u_int py, u_int nx, u_int ny) 1047 { 1048 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1049 1050 if (!ctx->bigger) 1051 return (1); 1052 1053 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1054 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1055 return (0); 1056 return (1); 1057 } 1058 1059 /* Clamp line position to visible part of pane. */ 1060 static int 1061 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1062 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1063 { 1064 u_int xoff = ctx->rxoff + px; 1065 1066 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1067 return (0); 1068 *ry = ctx->yoff + py - ctx->woy; 1069 1070 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1071 /* All visible. */ 1072 *i = 0; 1073 *x = ctx->xoff + px - ctx->wox; 1074 *rx = nx; 1075 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1076 /* Both left and right not visible. */ 1077 *i = ctx->wox; 1078 *x = 0; 1079 *rx = ctx->wsx; 1080 } else if (xoff < ctx->wox) { 1081 /* Left not visible. */ 1082 *i = ctx->wox - (ctx->xoff + px); 1083 *x = 0; 1084 *rx = nx - *i; 1085 } else { 1086 /* Right not visible. */ 1087 *i = 0; 1088 *x = (ctx->xoff + px) - ctx->wox; 1089 *rx = ctx->wsx - *x; 1090 } 1091 if (*rx > nx) 1092 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1093 1094 return (1); 1095 } 1096 1097 /* Clear a line. */ 1098 static void 1099 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1100 u_int px, u_int nx, u_int bg) 1101 { 1102 struct client *c = tty->client; 1103 struct overlay_ranges r; 1104 u_int i; 1105 1106 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1107 1108 /* Nothing to clear. */ 1109 if (nx == 0) 1110 return; 1111 1112 /* If genuine BCE is available, can try escape sequences. */ 1113 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1114 /* Off the end of the line, use EL if available. */ 1115 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1116 tty_cursor(tty, px, py); 1117 tty_putcode(tty, TTYC_EL); 1118 return; 1119 } 1120 1121 /* At the start of the line. Use EL1. */ 1122 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1123 tty_cursor(tty, px + nx - 1, py); 1124 tty_putcode(tty, TTYC_EL1); 1125 return; 1126 } 1127 1128 /* Section of line. Use ECH if possible. */ 1129 if (tty_term_has(tty->term, TTYC_ECH)) { 1130 tty_cursor(tty, px, py); 1131 tty_putcode1(tty, TTYC_ECH, nx); 1132 return; 1133 } 1134 } 1135 1136 /* 1137 * Couldn't use an escape sequence, use spaces. Clear only the visible 1138 * bit if there is an overlay. 1139 */ 1140 tty_check_overlay_range(tty, px, py, nx, &r); 1141 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1142 if (r.nx[i] == 0) 1143 continue; 1144 tty_cursor(tty, r.px[i], py); 1145 tty_repeat_space(tty, r.nx[i]); 1146 } 1147 } 1148 1149 /* Clear a line, adjusting to visible part of pane. */ 1150 static void 1151 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1152 u_int px, u_int nx, u_int bg) 1153 { 1154 struct client *c = tty->client; 1155 u_int i, x, rx, ry; 1156 1157 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1158 1159 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1160 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1161 } 1162 1163 /* Clamp area position to visible part of pane. */ 1164 static int 1165 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1166 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1167 u_int *ry) 1168 { 1169 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1170 1171 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1172 return (0); 1173 1174 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1175 /* All visible. */ 1176 *i = 0; 1177 *x = ctx->xoff + px - ctx->wox; 1178 *rx = nx; 1179 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1180 /* Both left and right not visible. */ 1181 *i = ctx->wox; 1182 *x = 0; 1183 *rx = ctx->wsx; 1184 } else if (xoff < ctx->wox) { 1185 /* Left not visible. */ 1186 *i = ctx->wox - (ctx->xoff + px); 1187 *x = 0; 1188 *rx = nx - *i; 1189 } else { 1190 /* Right not visible. */ 1191 *i = 0; 1192 *x = (ctx->xoff + px) - ctx->wox; 1193 *rx = ctx->wsx - *x; 1194 } 1195 if (*rx > nx) 1196 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1197 1198 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1199 /* All visible. */ 1200 *j = 0; 1201 *y = ctx->yoff + py - ctx->woy; 1202 *ry = ny; 1203 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1204 /* Both top and bottom not visible. */ 1205 *j = ctx->woy; 1206 *y = 0; 1207 *ry = ctx->wsy; 1208 } else if (yoff < ctx->woy) { 1209 /* Top not visible. */ 1210 *j = ctx->woy - (ctx->yoff + py); 1211 *y = 0; 1212 *ry = ny - *j; 1213 } else { 1214 /* Bottom not visible. */ 1215 *j = 0; 1216 *y = (ctx->yoff + py) - ctx->woy; 1217 *ry = ctx->wsy - *y; 1218 } 1219 if (*ry > ny) 1220 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1221 1222 return (1); 1223 } 1224 1225 /* Clear an area, adjusting to visible part of pane. */ 1226 static void 1227 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1228 u_int ny, u_int px, u_int nx, u_int bg) 1229 { 1230 struct client *c = tty->client; 1231 u_int yy; 1232 char tmp[64]; 1233 1234 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1235 1236 /* Nothing to clear. */ 1237 if (nx == 0 || ny == 0) 1238 return; 1239 1240 /* If genuine BCE is available, can try escape sequences. */ 1241 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1242 /* Use ED if clearing off the bottom of the terminal. */ 1243 if (px == 0 && 1244 px + nx >= tty->sx && 1245 py + ny >= tty->sy && 1246 tty_term_has(tty->term, TTYC_ED)) { 1247 tty_cursor(tty, 0, py); 1248 tty_putcode(tty, TTYC_ED); 1249 return; 1250 } 1251 1252 /* 1253 * On VT420 compatible terminals we can use DECFRA if the 1254 * background colour isn't default (because it doesn't work 1255 * after SGR 0). 1256 */ 1257 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1258 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1259 py + 1, px + 1, py + ny, px + nx); 1260 tty_puts(tty, tmp); 1261 return; 1262 } 1263 1264 /* Full lines can be scrolled away to clear them. */ 1265 if (px == 0 && 1266 px + nx >= tty->sx && 1267 ny > 2 && 1268 tty_term_has(tty->term, TTYC_CSR) && 1269 tty_term_has(tty->term, TTYC_INDN)) { 1270 tty_region(tty, py, py + ny - 1); 1271 tty_margin_off(tty); 1272 tty_putcode1(tty, TTYC_INDN, ny); 1273 return; 1274 } 1275 1276 /* 1277 * If margins are supported, can just scroll the area off to 1278 * clear it. 1279 */ 1280 if (nx > 2 && 1281 ny > 2 && 1282 tty_term_has(tty->term, TTYC_CSR) && 1283 tty_use_margin(tty) && 1284 tty_term_has(tty->term, TTYC_INDN)) { 1285 tty_region(tty, py, py + ny - 1); 1286 tty_margin(tty, px, px + nx - 1); 1287 tty_putcode1(tty, TTYC_INDN, ny); 1288 return; 1289 } 1290 } 1291 1292 /* Couldn't use an escape sequence, loop over the lines. */ 1293 for (yy = py; yy < py + ny; yy++) 1294 tty_clear_line(tty, defaults, yy, px, nx, bg); 1295 } 1296 1297 /* Clear an area in a pane. */ 1298 static void 1299 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1300 u_int ny, u_int px, u_int nx, u_int bg) 1301 { 1302 u_int i, j, x, y, rx, ry; 1303 1304 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1305 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1306 } 1307 1308 static void 1309 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1310 { 1311 struct screen *s = ctx->s; 1312 u_int nx = ctx->sx, i, x, rx, ry; 1313 1314 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1315 1316 if (!ctx->bigger) { 1317 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1318 &ctx->defaults, ctx->palette); 1319 return; 1320 } 1321 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1322 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1323 ctx->palette); 1324 } 1325 } 1326 1327 static const struct grid_cell * 1328 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1329 { 1330 static struct grid_cell new; 1331 int c; 1332 1333 /* Characters less than 0x7f are always fine, no matter what. */ 1334 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1335 return (gc); 1336 1337 /* UTF-8 terminal and a UTF-8 character - fine. */ 1338 if (tty->client->flags & CLIENT_UTF8) 1339 return (gc); 1340 memcpy(&new, gc, sizeof new); 1341 1342 /* See if this can be mapped to an ACS character. */ 1343 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1344 if (c != -1) { 1345 utf8_set(&new.data, c); 1346 new.attr |= GRID_ATTR_CHARSET; 1347 return (&new); 1348 } 1349 1350 /* Replace by the right number of underscores. */ 1351 new.data.size = gc->data.width; 1352 if (new.data.size > UTF8_SIZE) 1353 new.data.size = UTF8_SIZE; 1354 memset(new.data.data, '_', new.data.size); 1355 return (&new); 1356 } 1357 1358 /* 1359 * Check if a single character is obstructed by the overlay and return a 1360 * boolean. 1361 */ 1362 static int 1363 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1364 { 1365 struct overlay_ranges r; 1366 1367 /* 1368 * A unit width range will always return nx[2] == 0 from a check, even 1369 * with multiple overlays, so it's sufficient to check just the first 1370 * two entries. 1371 */ 1372 tty_check_overlay_range(tty, px, py, 1, &r); 1373 if (r.nx[0] + r.nx[1] == 0) 1374 return (0); 1375 return (1); 1376 } 1377 1378 /* Return parts of the input range which are visible. */ 1379 static void 1380 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1381 struct overlay_ranges *r) 1382 { 1383 struct client *c = tty->client; 1384 1385 if (c->overlay_check == NULL) { 1386 r->px[0] = px; 1387 r->nx[0] = nx; 1388 r->px[1] = 0; 1389 r->nx[1] = 0; 1390 r->px[2] = 0; 1391 r->nx[2] = 0; 1392 return; 1393 } 1394 1395 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1396 } 1397 1398 void 1399 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1400 u_int atx, u_int aty, const struct grid_cell *defaults, 1401 struct colour_palette *palette) 1402 { 1403 struct grid *gd = s->grid; 1404 struct grid_cell gc, last; 1405 const struct grid_cell *gcp; 1406 struct grid_line *gl; 1407 struct client *c = tty->client; 1408 struct overlay_ranges r; 1409 u_int i, j, ux, sx, width, hidden, eux, nxx; 1410 u_int cellsize; 1411 int flags, cleared = 0, wrapped = 0; 1412 char buf[512]; 1413 size_t len; 1414 1415 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1416 px, py, nx, atx, aty); 1417 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1418 defaults->bg); 1419 1420 /* 1421 * py is the line in the screen to draw. 1422 * px is the start x and nx is the width to draw. 1423 * atx,aty is the line on the terminal to draw it. 1424 */ 1425 1426 flags = (tty->flags & TTY_NOCURSOR); 1427 tty->flags |= TTY_NOCURSOR; 1428 tty_update_mode(tty, tty->mode, s); 1429 1430 tty_region_off(tty); 1431 tty_margin_off(tty); 1432 1433 /* 1434 * Clamp the width to cellsize - note this is not cellused, because 1435 * there may be empty background cells after it (from BCE). 1436 */ 1437 sx = screen_size_x(s); 1438 if (nx > sx) 1439 nx = sx; 1440 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1441 if (sx > cellsize) 1442 sx = cellsize; 1443 if (sx > tty->sx) 1444 sx = tty->sx; 1445 if (sx > nx) 1446 sx = nx; 1447 ux = 0; 1448 1449 if (py == 0) 1450 gl = NULL; 1451 else 1452 gl = grid_get_line(gd, gd->hsize + py - 1); 1453 if (gl == NULL || 1454 (~gl->flags & GRID_LINE_WRAPPED) || 1455 atx != 0 || 1456 tty->cx < tty->sx || 1457 nx < tty->sx) { 1458 if (nx < tty->sx && 1459 atx == 0 && 1460 px + sx != nx && 1461 tty_term_has(tty->term, TTYC_EL1) && 1462 !tty_fake_bce(tty, defaults, 8) && 1463 c->overlay_check == NULL) { 1464 tty_default_attributes(tty, defaults, palette, 8, 1465 s->hyperlinks); 1466 tty_cursor(tty, nx - 1, aty); 1467 tty_putcode(tty, TTYC_EL1); 1468 cleared = 1; 1469 } 1470 } else { 1471 log_debug("%s: wrapped line %u", __func__, aty); 1472 wrapped = 1; 1473 } 1474 1475 memcpy(&last, &grid_default_cell, sizeof last); 1476 len = 0; 1477 width = 0; 1478 1479 for (i = 0; i < sx; i++) { 1480 grid_view_get_cell(gd, px + i, py, &gc); 1481 gcp = tty_check_codeset(tty, &gc); 1482 if (len != 0 && 1483 (!tty_check_overlay(tty, atx + ux + width, aty) || 1484 (gcp->attr & GRID_ATTR_CHARSET) || 1485 gcp->flags != last.flags || 1486 gcp->attr != last.attr || 1487 gcp->fg != last.fg || 1488 gcp->bg != last.bg || 1489 gcp->us != last.us || 1490 gcp->link != last.link || 1491 ux + width + gcp->data.width > nx || 1492 (sizeof buf) - len < gcp->data.size)) { 1493 tty_attributes(tty, &last, defaults, palette, 1494 s->hyperlinks); 1495 if (last.flags & GRID_FLAG_CLEARED) { 1496 log_debug("%s: %zu cleared", __func__, len); 1497 tty_clear_line(tty, defaults, aty, atx + ux, 1498 width, last.bg); 1499 } else { 1500 if (!wrapped || atx != 0 || ux != 0) 1501 tty_cursor(tty, atx + ux, aty); 1502 tty_putn(tty, buf, len, width); 1503 } 1504 ux += width; 1505 1506 len = 0; 1507 width = 0; 1508 wrapped = 0; 1509 } 1510 1511 if (gcp->flags & GRID_FLAG_SELECTED) 1512 screen_select_cell(s, &last, gcp); 1513 else 1514 memcpy(&last, gcp, sizeof last); 1515 1516 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1517 &r); 1518 hidden = 0; 1519 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1520 hidden += r.nx[j]; 1521 hidden = gcp->data.width - hidden; 1522 if (hidden != 0 && hidden == gcp->data.width) { 1523 if (~gcp->flags & GRID_FLAG_PADDING) 1524 ux += gcp->data.width; 1525 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1526 if (~gcp->flags & GRID_FLAG_PADDING) { 1527 tty_attributes(tty, &last, defaults, palette, 1528 s->hyperlinks); 1529 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1530 if (r.nx[j] == 0) 1531 continue; 1532 /* Effective width drawn so far. */ 1533 eux = r.px[j] - atx; 1534 if (eux < nx) { 1535 tty_cursor(tty, r.px[j], aty); 1536 nxx = nx - eux; 1537 if (r.nx[j] > nxx) 1538 r.nx[j] = nxx; 1539 tty_repeat_space(tty, r.nx[j]); 1540 ux = eux + r.nx[j]; 1541 } 1542 } 1543 } 1544 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1545 tty_attributes(tty, &last, defaults, palette, 1546 s->hyperlinks); 1547 tty_cursor(tty, atx + ux, aty); 1548 for (j = 0; j < gcp->data.size; j++) 1549 tty_putc(tty, gcp->data.data[j]); 1550 ux += gcp->data.width; 1551 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1552 memcpy(buf + len, gcp->data.data, gcp->data.size); 1553 len += gcp->data.size; 1554 width += gcp->data.width; 1555 } 1556 } 1557 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1558 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1559 if (last.flags & GRID_FLAG_CLEARED) { 1560 log_debug("%s: %zu cleared (end)", __func__, len); 1561 tty_clear_line(tty, defaults, aty, atx + ux, width, 1562 last.bg); 1563 } else { 1564 if (!wrapped || atx != 0 || ux != 0) 1565 tty_cursor(tty, atx + ux, aty); 1566 tty_putn(tty, buf, len, width); 1567 } 1568 ux += width; 1569 } 1570 1571 if (!cleared && ux < nx) { 1572 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1573 nx - ux, len); 1574 tty_default_attributes(tty, defaults, palette, 8, 1575 s->hyperlinks); 1576 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1577 } 1578 1579 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1580 tty_update_mode(tty, tty->mode, s); 1581 } 1582 1583 void 1584 tty_sync_start(struct tty *tty) 1585 { 1586 if (tty->flags & TTY_BLOCK) 1587 return; 1588 if (tty->flags & TTY_SYNCING) 1589 return; 1590 tty->flags |= TTY_SYNCING; 1591 1592 if (tty_term_has(tty->term, TTYC_SYNC)) { 1593 log_debug("%s sync start", tty->client->name); 1594 tty_putcode1(tty, TTYC_SYNC, 1); 1595 } 1596 } 1597 1598 void 1599 tty_sync_end(struct tty *tty) 1600 { 1601 if (tty->flags & TTY_BLOCK) 1602 return; 1603 if (~tty->flags & TTY_SYNCING) 1604 return; 1605 tty->flags &= ~TTY_SYNCING; 1606 1607 if (tty_term_has(tty->term, TTYC_SYNC)) { 1608 log_debug("%s sync end", tty->client->name); 1609 tty_putcode1(tty, TTYC_SYNC, 2); 1610 } 1611 } 1612 1613 static int 1614 tty_client_ready(struct client *c) 1615 { 1616 if (c->session == NULL || c->tty.term == NULL) 1617 return (0); 1618 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1619 return (0); 1620 if (c->tty.flags & TTY_FREEZE) 1621 return (0); 1622 return (1); 1623 } 1624 1625 void 1626 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1627 struct tty_ctx *ctx) 1628 { 1629 struct client *c; 1630 int state; 1631 1632 if (ctx->set_client_cb == NULL) 1633 return; 1634 TAILQ_FOREACH(c, &clients, entry) { 1635 if (ctx->allow_invisible_panes) { 1636 if (c->session == NULL || 1637 c->tty.term == NULL || 1638 c->flags & CLIENT_SUSPENDED) 1639 continue; 1640 } else { 1641 if (!tty_client_ready(c)) 1642 continue; 1643 state = ctx->set_client_cb(ctx, c); 1644 if (state == -1) 1645 break; 1646 if (state == 0) 1647 continue; 1648 } 1649 cmdfn(&c->tty, ctx); 1650 } 1651 } 1652 1653 void 1654 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1655 { 1656 struct client *c = tty->client; 1657 1658 if (ctx->bigger || 1659 !tty_full_width(tty, ctx) || 1660 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1661 (!tty_term_has(tty->term, TTYC_ICH) && 1662 !tty_term_has(tty->term, TTYC_ICH1)) || 1663 c->overlay_check != NULL) { 1664 tty_draw_pane(tty, ctx, ctx->ocy); 1665 return; 1666 } 1667 1668 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1669 ctx->s->hyperlinks); 1670 1671 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1672 1673 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1674 } 1675 1676 void 1677 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1678 { 1679 struct client *c = tty->client; 1680 1681 if (ctx->bigger || 1682 !tty_full_width(tty, ctx) || 1683 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1684 (!tty_term_has(tty->term, TTYC_DCH) && 1685 !tty_term_has(tty->term, TTYC_DCH1)) || 1686 c->overlay_check != NULL) { 1687 tty_draw_pane(tty, ctx, ctx->ocy); 1688 return; 1689 } 1690 1691 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1692 ctx->s->hyperlinks); 1693 1694 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1695 1696 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1697 } 1698 1699 void 1700 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1701 { 1702 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1703 ctx->s->hyperlinks); 1704 1705 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1706 } 1707 1708 void 1709 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1710 { 1711 struct client *c = tty->client; 1712 1713 if (ctx->bigger || 1714 !tty_full_width(tty, ctx) || 1715 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1716 !tty_term_has(tty->term, TTYC_CSR) || 1717 !tty_term_has(tty->term, TTYC_IL1) || 1718 ctx->sx == 1 || 1719 ctx->sy == 1 || 1720 c->overlay_check != NULL) { 1721 tty_redraw_region(tty, ctx); 1722 return; 1723 } 1724 1725 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1726 ctx->s->hyperlinks); 1727 1728 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1729 tty_margin_off(tty); 1730 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1731 1732 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1733 tty->cx = tty->cy = UINT_MAX; 1734 } 1735 1736 void 1737 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1738 { 1739 struct client *c = tty->client; 1740 1741 if (ctx->bigger || 1742 !tty_full_width(tty, ctx) || 1743 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1744 !tty_term_has(tty->term, TTYC_CSR) || 1745 !tty_term_has(tty->term, TTYC_DL1) || 1746 ctx->sx == 1 || 1747 ctx->sy == 1 || 1748 c->overlay_check != NULL) { 1749 tty_redraw_region(tty, ctx); 1750 return; 1751 } 1752 1753 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1754 ctx->s->hyperlinks); 1755 1756 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1757 tty_margin_off(tty); 1758 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1759 1760 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1761 tty->cx = tty->cy = UINT_MAX; 1762 } 1763 1764 void 1765 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1766 { 1767 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1768 ctx->s->hyperlinks); 1769 1770 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1771 } 1772 1773 void 1774 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1775 { 1776 u_int nx = ctx->sx - ctx->ocx; 1777 1778 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1779 ctx->s->hyperlinks); 1780 1781 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1782 } 1783 1784 void 1785 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1786 { 1787 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1788 ctx->s->hyperlinks); 1789 1790 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1791 } 1792 1793 void 1794 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1795 { 1796 struct client *c = tty->client; 1797 1798 if (ctx->ocy != ctx->orupper) 1799 return; 1800 1801 if (ctx->bigger || 1802 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1803 tty_fake_bce(tty, &ctx->defaults, 8) || 1804 !tty_term_has(tty->term, TTYC_CSR) || 1805 (!tty_term_has(tty->term, TTYC_RI) && 1806 !tty_term_has(tty->term, TTYC_RIN)) || 1807 ctx->sx == 1 || 1808 ctx->sy == 1 || 1809 c->overlay_check != NULL) { 1810 tty_redraw_region(tty, ctx); 1811 return; 1812 } 1813 1814 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1815 ctx->s->hyperlinks); 1816 1817 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1818 tty_margin_pane(tty, ctx); 1819 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1820 1821 if (tty_term_has(tty->term, TTYC_RI)) 1822 tty_putcode(tty, TTYC_RI); 1823 else 1824 tty_putcode1(tty, TTYC_RIN, 1); 1825 } 1826 1827 void 1828 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1829 { 1830 struct client *c = tty->client; 1831 1832 if (ctx->ocy != ctx->orlower) 1833 return; 1834 1835 if (ctx->bigger || 1836 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1837 tty_fake_bce(tty, &ctx->defaults, 8) || 1838 !tty_term_has(tty->term, TTYC_CSR) || 1839 ctx->sx == 1 || 1840 ctx->sy == 1 || 1841 c->overlay_check != NULL) { 1842 tty_redraw_region(tty, ctx); 1843 return; 1844 } 1845 1846 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1847 ctx->s->hyperlinks); 1848 1849 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1850 tty_margin_pane(tty, ctx); 1851 1852 /* 1853 * If we want to wrap a pane while using margins, the cursor needs to 1854 * be exactly on the right of the region. If the cursor is entirely off 1855 * the edge - move it back to the right. Some terminals are funny about 1856 * this and insert extra spaces, so only use the right if margins are 1857 * enabled. 1858 */ 1859 if (ctx->xoff + ctx->ocx > tty->rright) { 1860 if (!tty_use_margin(tty)) 1861 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1862 else 1863 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1864 } else 1865 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1866 1867 tty_putc(tty, '\n'); 1868 } 1869 1870 void 1871 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1872 { 1873 struct client *c = tty->client; 1874 u_int i; 1875 1876 if (ctx->bigger || 1877 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1878 tty_fake_bce(tty, &ctx->defaults, 8) || 1879 !tty_term_has(tty->term, TTYC_CSR) || 1880 ctx->sx == 1 || 1881 ctx->sy == 1 || 1882 c->overlay_check != NULL) { 1883 tty_redraw_region(tty, ctx); 1884 return; 1885 } 1886 1887 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1888 ctx->s->hyperlinks); 1889 1890 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1891 tty_margin_pane(tty, ctx); 1892 1893 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1894 if (!tty_use_margin(tty)) 1895 tty_cursor(tty, 0, tty->rlower); 1896 else 1897 tty_cursor(tty, tty->rright, tty->rlower); 1898 for (i = 0; i < ctx->num; i++) 1899 tty_putc(tty, '\n'); 1900 } else { 1901 if (tty->cy == UINT_MAX) 1902 tty_cursor(tty, 0, 0); 1903 else 1904 tty_cursor(tty, 0, tty->cy); 1905 tty_putcode1(tty, TTYC_INDN, ctx->num); 1906 } 1907 } 1908 1909 void 1910 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1911 { 1912 u_int i; 1913 struct client *c = tty->client; 1914 1915 if (ctx->bigger || 1916 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1917 tty_fake_bce(tty, &ctx->defaults, 8) || 1918 !tty_term_has(tty->term, TTYC_CSR) || 1919 (!tty_term_has(tty->term, TTYC_RI) && 1920 !tty_term_has(tty->term, TTYC_RIN)) || 1921 ctx->sx == 1 || 1922 ctx->sy == 1 || 1923 c->overlay_check != NULL) { 1924 tty_redraw_region(tty, ctx); 1925 return; 1926 } 1927 1928 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1929 ctx->s->hyperlinks); 1930 1931 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1932 tty_margin_pane(tty, ctx); 1933 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1934 1935 if (tty_term_has(tty->term, TTYC_RIN)) 1936 tty_putcode1(tty, TTYC_RIN, ctx->num); 1937 else { 1938 for (i = 0; i < ctx->num; i++) 1939 tty_putcode(tty, TTYC_RI); 1940 } 1941 } 1942 1943 void 1944 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1945 { 1946 u_int px, py, nx, ny; 1947 1948 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1949 ctx->s->hyperlinks); 1950 1951 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1952 tty_margin_off(tty); 1953 1954 px = 0; 1955 nx = ctx->sx; 1956 py = ctx->ocy + 1; 1957 ny = ctx->sy - ctx->ocy - 1; 1958 1959 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1960 1961 px = ctx->ocx; 1962 nx = ctx->sx - ctx->ocx; 1963 py = ctx->ocy; 1964 1965 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1966 } 1967 1968 void 1969 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1970 { 1971 u_int px, py, nx, ny; 1972 1973 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1974 ctx->s->hyperlinks); 1975 1976 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1977 tty_margin_off(tty); 1978 1979 px = 0; 1980 nx = ctx->sx; 1981 py = 0; 1982 ny = ctx->ocy; 1983 1984 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1985 1986 px = 0; 1987 nx = ctx->ocx + 1; 1988 py = ctx->ocy; 1989 1990 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1991 } 1992 1993 void 1994 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1995 { 1996 u_int px, py, nx, ny; 1997 1998 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1999 ctx->s->hyperlinks); 2000 2001 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2002 tty_margin_off(tty); 2003 2004 px = 0; 2005 nx = ctx->sx; 2006 py = 0; 2007 ny = ctx->sy; 2008 2009 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2010 } 2011 2012 void 2013 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2014 { 2015 u_int i, j; 2016 2017 if (ctx->bigger) { 2018 ctx->redraw_cb(ctx); 2019 return; 2020 } 2021 2022 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2023 ctx->s->hyperlinks); 2024 2025 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2026 tty_margin_off(tty); 2027 2028 for (j = 0; j < ctx->sy; j++) { 2029 tty_cursor_pane(tty, ctx, 0, j); 2030 for (i = 0; i < ctx->sx; i++) 2031 tty_putc(tty, 'E'); 2032 } 2033 } 2034 2035 void 2036 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2037 { 2038 const struct grid_cell *gcp = ctx->cell; 2039 struct screen *s = ctx->s; 2040 struct overlay_ranges r; 2041 u_int px, py, i, vis = 0; 2042 2043 px = ctx->xoff + ctx->ocx - ctx->wox; 2044 py = ctx->yoff + ctx->ocy - ctx->woy; 2045 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2046 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2047 return; 2048 2049 /* Handle partially obstructed wide characters. */ 2050 if (gcp->data.width > 1) { 2051 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2052 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2053 vis += r.nx[i]; 2054 if (vis < gcp->data.width) { 2055 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2056 px, py, &ctx->defaults, ctx->palette); 2057 return; 2058 } 2059 } 2060 2061 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2062 ctx->ocy == ctx->orlower && 2063 tty_full_width(tty, ctx)) 2064 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2065 2066 tty_margin_off(tty); 2067 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2068 2069 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2070 ctx->s->hyperlinks); 2071 } 2072 2073 void 2074 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2075 { 2076 struct overlay_ranges r; 2077 u_int i, px, py, cx; 2078 char *cp = ctx->ptr; 2079 2080 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2081 return; 2082 2083 if (ctx->bigger && 2084 (ctx->xoff + ctx->ocx < ctx->wox || 2085 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2086 if (!ctx->wrapped || 2087 !tty_full_width(tty, ctx) || 2088 (tty->term->flags & TERM_NOAM) || 2089 ctx->xoff + ctx->ocx != 0 || 2090 ctx->yoff + ctx->ocy != tty->cy + 1 || 2091 tty->cx < tty->sx || 2092 tty->cy == tty->rlower) 2093 tty_draw_pane(tty, ctx, ctx->ocy); 2094 else 2095 ctx->redraw_cb(ctx); 2096 return; 2097 } 2098 2099 tty_margin_off(tty); 2100 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2101 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2102 2103 /* Get tty position from pane position for overlay check. */ 2104 px = ctx->xoff + ctx->ocx - ctx->wox; 2105 py = ctx->yoff + ctx->ocy - ctx->woy; 2106 2107 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2108 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2109 if (r.nx[i] == 0) 2110 continue; 2111 /* Convert back to pane position for printing. */ 2112 cx = r.px[i] - ctx->xoff + ctx->wox; 2113 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2114 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2115 } 2116 } 2117 2118 void 2119 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2120 { 2121 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2122 } 2123 2124 void 2125 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2126 size_t len) 2127 { 2128 char *encoded; 2129 size_t size; 2130 2131 if (~tty->flags & TTY_STARTED) 2132 return; 2133 if (!tty_term_has(tty->term, TTYC_MS)) 2134 return; 2135 2136 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2137 encoded = xmalloc(size); 2138 2139 b64_ntop(buf, len, encoded, size); 2140 tty->flags |= TTY_NOBLOCK; 2141 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded); 2142 2143 free(encoded); 2144 } 2145 2146 void 2147 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2148 { 2149 tty->flags |= TTY_NOBLOCK; 2150 tty_add(tty, ctx->ptr, ctx->num); 2151 tty_invalidate(tty); 2152 } 2153 2154 void 2155 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2156 { 2157 if (ctx->num == 0x11) { 2158 /* 2159 * This is an overlay and a command that moves the cursor so 2160 * start synchronized updates. 2161 */ 2162 tty_sync_start(tty); 2163 } else if (~ctx->num & 0x10) { 2164 /* 2165 * This is a pane. If there is an overlay, always start; 2166 * otherwise, only if requested. 2167 */ 2168 if (ctx->num || tty->client->overlay_draw != NULL) 2169 tty_sync_start(tty); 2170 } 2171 } 2172 2173 void 2174 tty_cell(struct tty *tty, const struct grid_cell *gc, 2175 const struct grid_cell *defaults, struct colour_palette *palette, 2176 struct hyperlinks *hl) 2177 { 2178 const struct grid_cell *gcp; 2179 2180 /* Skip last character if terminal is stupid. */ 2181 if ((tty->term->flags & TERM_NOAM) && 2182 tty->cy == tty->sy - 1 && 2183 tty->cx == tty->sx - 1) 2184 return; 2185 2186 /* If this is a padding character, do nothing. */ 2187 if (gc->flags & GRID_FLAG_PADDING) 2188 return; 2189 2190 /* Check the output codeset and apply attributes. */ 2191 gcp = tty_check_codeset(tty, gc); 2192 tty_attributes(tty, gcp, defaults, palette, hl); 2193 2194 /* If it is a single character, write with putc to handle ACS. */ 2195 if (gcp->data.size == 1) { 2196 tty_attributes(tty, gcp, defaults, palette, hl); 2197 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2198 return; 2199 tty_putc(tty, *gcp->data.data); 2200 return; 2201 } 2202 2203 /* Write the data. */ 2204 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2205 } 2206 2207 void 2208 tty_reset(struct tty *tty) 2209 { 2210 struct grid_cell *gc = &tty->cell; 2211 2212 if (!grid_cells_equal(gc, &grid_default_cell)) { 2213 if (gc->link != 0) 2214 tty_putcode_ptr2(tty, TTYC_HLS, "", ""); 2215 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2216 tty_putcode(tty, TTYC_RMACS); 2217 tty_putcode(tty, TTYC_SGR0); 2218 memcpy(gc, &grid_default_cell, sizeof *gc); 2219 } 2220 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2221 } 2222 2223 static void 2224 tty_invalidate(struct tty *tty) 2225 { 2226 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2227 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2228 2229 tty->cx = tty->cy = UINT_MAX; 2230 tty->rupper = tty->rleft = UINT_MAX; 2231 tty->rlower = tty->rright = UINT_MAX; 2232 2233 if (tty->flags & TTY_STARTED) { 2234 if (tty_use_margin(tty)) 2235 tty_putcode(tty, TTYC_ENMG); 2236 tty_putcode(tty, TTYC_SGR0); 2237 2238 tty->mode = ALL_MODES; 2239 tty_update_mode(tty, MODE_CURSOR, NULL); 2240 2241 tty_cursor(tty, 0, 0); 2242 tty_region_off(tty); 2243 tty_margin_off(tty); 2244 } else 2245 tty->mode = MODE_CURSOR; 2246 } 2247 2248 /* Turn off margin. */ 2249 void 2250 tty_region_off(struct tty *tty) 2251 { 2252 tty_region(tty, 0, tty->sy - 1); 2253 } 2254 2255 /* Set region inside pane. */ 2256 static void 2257 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2258 u_int rlower) 2259 { 2260 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2261 ctx->yoff + rlower - ctx->woy); 2262 } 2263 2264 /* Set region at absolute position. */ 2265 static void 2266 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2267 { 2268 if (tty->rlower == rlower && tty->rupper == rupper) 2269 return; 2270 if (!tty_term_has(tty->term, TTYC_CSR)) 2271 return; 2272 2273 tty->rupper = rupper; 2274 tty->rlower = rlower; 2275 2276 /* 2277 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2278 * 0,0 if it is beyond the last column (they do not reset their wrap 2279 * flag so further output causes a line feed). As a workaround, do an 2280 * explicit move to 0 first. 2281 */ 2282 if (tty->cx >= tty->sx) { 2283 if (tty->cy == UINT_MAX) 2284 tty_cursor(tty, 0, 0); 2285 else 2286 tty_cursor(tty, 0, tty->cy); 2287 } 2288 2289 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2290 tty->cx = tty->cy = UINT_MAX; 2291 } 2292 2293 /* Turn off margin. */ 2294 void 2295 tty_margin_off(struct tty *tty) 2296 { 2297 tty_margin(tty, 0, tty->sx - 1); 2298 } 2299 2300 /* Set margin inside pane. */ 2301 static void 2302 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2303 { 2304 tty_margin(tty, ctx->xoff - ctx->wox, 2305 ctx->xoff + ctx->sx - 1 - ctx->wox); 2306 } 2307 2308 /* Set margin at absolute position. */ 2309 static void 2310 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2311 { 2312 if (!tty_use_margin(tty)) 2313 return; 2314 if (tty->rleft == rleft && tty->rright == rright) 2315 return; 2316 2317 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2318 2319 tty->rleft = rleft; 2320 tty->rright = rright; 2321 2322 if (rleft == 0 && rright == tty->sx - 1) 2323 tty_putcode(tty, TTYC_CLMG); 2324 else 2325 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2326 tty->cx = tty->cy = UINT_MAX; 2327 } 2328 2329 /* 2330 * Move the cursor, unless it would wrap itself when the next character is 2331 * printed. 2332 */ 2333 static void 2334 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2335 u_int cx, u_int cy) 2336 { 2337 if (!ctx->wrapped || 2338 !tty_full_width(tty, ctx) || 2339 (tty->term->flags & TERM_NOAM) || 2340 ctx->xoff + cx != 0 || 2341 ctx->yoff + cy != tty->cy + 1 || 2342 tty->cx < tty->sx || 2343 tty->cy == tty->rlower) 2344 tty_cursor_pane(tty, ctx, cx, cy); 2345 else 2346 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2347 } 2348 2349 /* Move cursor inside pane. */ 2350 static void 2351 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2352 { 2353 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2354 } 2355 2356 /* Move cursor to absolute position. */ 2357 void 2358 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2359 { 2360 struct tty_term *term = tty->term; 2361 u_int thisx, thisy; 2362 int change; 2363 2364 if (tty->flags & TTY_BLOCK) 2365 return; 2366 2367 thisx = tty->cx; 2368 thisy = tty->cy; 2369 2370 /* 2371 * If in the automargin space, and want to be there, do not move. 2372 * Otherwise, force the cursor to be in range (and complain). 2373 */ 2374 if (cx == thisx && cy == thisy && cx == tty->sx) 2375 return; 2376 if (cx > tty->sx - 1) { 2377 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2378 cx = tty->sx - 1; 2379 } 2380 2381 /* No change. */ 2382 if (cx == thisx && cy == thisy) 2383 return; 2384 2385 /* Currently at the very end of the line - use absolute movement. */ 2386 if (thisx > tty->sx - 1) 2387 goto absolute; 2388 2389 /* Move to home position (0, 0). */ 2390 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2391 tty_putcode(tty, TTYC_HOME); 2392 goto out; 2393 } 2394 2395 /* Zero on the next line. */ 2396 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2397 (!tty_use_margin(tty) || tty->rleft == 0)) { 2398 tty_putc(tty, '\r'); 2399 tty_putc(tty, '\n'); 2400 goto out; 2401 } 2402 2403 /* Moving column or row. */ 2404 if (cy == thisy) { 2405 /* 2406 * Moving column only, row staying the same. 2407 */ 2408 2409 /* To left edge. */ 2410 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2411 tty_putc(tty, '\r'); 2412 goto out; 2413 } 2414 2415 /* One to the left. */ 2416 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2417 tty_putcode(tty, TTYC_CUB1); 2418 goto out; 2419 } 2420 2421 /* One to the right. */ 2422 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2423 tty_putcode(tty, TTYC_CUF1); 2424 goto out; 2425 } 2426 2427 /* Calculate difference. */ 2428 change = thisx - cx; /* +ve left, -ve right */ 2429 2430 /* 2431 * Use HPA if change is larger than absolute, otherwise move 2432 * the cursor with CUB/CUF. 2433 */ 2434 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2435 tty_putcode1(tty, TTYC_HPA, cx); 2436 goto out; 2437 } else if (change > 0 && 2438 tty_term_has(term, TTYC_CUB) && 2439 !tty_use_margin(tty)) { 2440 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2441 tty_putcode(tty, TTYC_CUB1); 2442 tty_putcode(tty, TTYC_CUB1); 2443 goto out; 2444 } 2445 tty_putcode1(tty, TTYC_CUB, change); 2446 goto out; 2447 } else if (change < 0 && 2448 tty_term_has(term, TTYC_CUF) && 2449 !tty_use_margin(tty)) { 2450 tty_putcode1(tty, TTYC_CUF, -change); 2451 goto out; 2452 } 2453 } else if (cx == thisx) { 2454 /* 2455 * Moving row only, column staying the same. 2456 */ 2457 2458 /* One above. */ 2459 if (thisy != tty->rupper && 2460 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2461 tty_putcode(tty, TTYC_CUU1); 2462 goto out; 2463 } 2464 2465 /* One below. */ 2466 if (thisy != tty->rlower && 2467 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2468 tty_putcode(tty, TTYC_CUD1); 2469 goto out; 2470 } 2471 2472 /* Calculate difference. */ 2473 change = thisy - cy; /* +ve up, -ve down */ 2474 2475 /* 2476 * Try to use VPA if change is larger than absolute or if this 2477 * change would cross the scroll region, otherwise use CUU/CUD. 2478 */ 2479 if ((u_int) abs(change) > cy || 2480 (change < 0 && cy - change > tty->rlower) || 2481 (change > 0 && cy - change < tty->rupper)) { 2482 if (tty_term_has(term, TTYC_VPA)) { 2483 tty_putcode1(tty, TTYC_VPA, cy); 2484 goto out; 2485 } 2486 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2487 tty_putcode1(tty, TTYC_CUU, change); 2488 goto out; 2489 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2490 tty_putcode1(tty, TTYC_CUD, -change); 2491 goto out; 2492 } 2493 } 2494 2495 absolute: 2496 /* Absolute movement. */ 2497 tty_putcode2(tty, TTYC_CUP, cy, cx); 2498 2499 out: 2500 tty->cx = cx; 2501 tty->cy = cy; 2502 } 2503 2504 static void 2505 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2506 struct hyperlinks *hl) 2507 { 2508 const char *uri, *id; 2509 2510 if (gc->link == tty->cell.link) 2511 return; 2512 tty->cell.link = gc->link; 2513 2514 if (hl == NULL) 2515 return; 2516 2517 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2518 tty_putcode_ptr2(tty, TTYC_HLS, "", ""); 2519 else 2520 tty_putcode_ptr2(tty, TTYC_HLS, id, uri); 2521 } 2522 2523 void 2524 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2525 const struct grid_cell *defaults, struct colour_palette *palette, 2526 struct hyperlinks *hl) 2527 { 2528 struct grid_cell *tc = &tty->cell, gc2; 2529 int changed; 2530 2531 /* Copy cell and update default colours. */ 2532 memcpy(&gc2, gc, sizeof gc2); 2533 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2534 if (gc2.fg == 8) 2535 gc2.fg = defaults->fg; 2536 if (gc2.bg == 8) 2537 gc2.bg = defaults->bg; 2538 } 2539 2540 /* Ignore cell if it is the same as the last one. */ 2541 if (gc2.attr == tty->last_cell.attr && 2542 gc2.fg == tty->last_cell.fg && 2543 gc2.bg == tty->last_cell.bg && 2544 gc2.us == tty->last_cell.us && 2545 gc2.link == tty->last_cell.link) 2546 return; 2547 2548 /* 2549 * If no setab, try to use the reverse attribute as a best-effort for a 2550 * non-default background. This is a bit of a hack but it doesn't do 2551 * any serious harm and makes a couple of applications happier. 2552 */ 2553 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2554 if (gc2.attr & GRID_ATTR_REVERSE) { 2555 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2556 gc2.attr &= ~GRID_ATTR_REVERSE; 2557 } else { 2558 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2559 gc2.attr |= GRID_ATTR_REVERSE; 2560 } 2561 } 2562 2563 /* Fix up the colours if necessary. */ 2564 tty_check_fg(tty, palette, &gc2); 2565 tty_check_bg(tty, palette, &gc2); 2566 tty_check_us(tty, palette, &gc2); 2567 2568 /* 2569 * If any bits are being cleared or the underline colour is now default, 2570 * reset everything. 2571 */ 2572 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2573 tty_reset(tty); 2574 2575 /* 2576 * Set the colours. This may call tty_reset() (so it comes next) and 2577 * may add to (NOT remove) the desired attributes. 2578 */ 2579 tty_colours(tty, &gc2); 2580 2581 /* Filter out attribute bits already set. */ 2582 changed = gc2.attr & ~tc->attr; 2583 tc->attr = gc2.attr; 2584 2585 /* Set the attributes. */ 2586 if (changed & GRID_ATTR_BRIGHT) 2587 tty_putcode(tty, TTYC_BOLD); 2588 if (changed & GRID_ATTR_DIM) 2589 tty_putcode(tty, TTYC_DIM); 2590 if (changed & GRID_ATTR_ITALICS) 2591 tty_set_italics(tty); 2592 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2593 if ((changed & GRID_ATTR_UNDERSCORE) || 2594 !tty_term_has(tty->term, TTYC_SMULX)) 2595 tty_putcode(tty, TTYC_SMUL); 2596 else if (changed & GRID_ATTR_UNDERSCORE_2) 2597 tty_putcode1(tty, TTYC_SMULX, 2); 2598 else if (changed & GRID_ATTR_UNDERSCORE_3) 2599 tty_putcode1(tty, TTYC_SMULX, 3); 2600 else if (changed & GRID_ATTR_UNDERSCORE_4) 2601 tty_putcode1(tty, TTYC_SMULX, 4); 2602 else if (changed & GRID_ATTR_UNDERSCORE_5) 2603 tty_putcode1(tty, TTYC_SMULX, 5); 2604 } 2605 if (changed & GRID_ATTR_BLINK) 2606 tty_putcode(tty, TTYC_BLINK); 2607 if (changed & GRID_ATTR_REVERSE) { 2608 if (tty_term_has(tty->term, TTYC_REV)) 2609 tty_putcode(tty, TTYC_REV); 2610 else if (tty_term_has(tty->term, TTYC_SMSO)) 2611 tty_putcode(tty, TTYC_SMSO); 2612 } 2613 if (changed & GRID_ATTR_HIDDEN) 2614 tty_putcode(tty, TTYC_INVIS); 2615 if (changed & GRID_ATTR_STRIKETHROUGH) 2616 tty_putcode(tty, TTYC_SMXX); 2617 if (changed & GRID_ATTR_OVERLINE) 2618 tty_putcode(tty, TTYC_SMOL); 2619 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2620 tty_putcode(tty, TTYC_SMACS); 2621 2622 /* Set hyperlink if any. */ 2623 tty_hyperlink(tty, gc, hl); 2624 2625 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2626 } 2627 2628 static void 2629 tty_colours(struct tty *tty, const struct grid_cell *gc) 2630 { 2631 struct grid_cell *tc = &tty->cell; 2632 int have_ax; 2633 2634 /* No changes? Nothing is necessary. */ 2635 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2636 return; 2637 2638 /* 2639 * Is either the default colour? This is handled specially because the 2640 * best solution might be to reset both colours to default, in which 2641 * case if only one is default need to fall onward to set the other 2642 * colour. 2643 */ 2644 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2645 /* 2646 * If don't have AX but do have op, send sgr0 (op can't 2647 * actually be used because it is sometimes the same as sgr0 2648 * and sometimes isn't). This resets both colours to default. 2649 * 2650 * Otherwise, try to set the default colour only as needed. 2651 */ 2652 have_ax = tty_term_flag(tty->term, TTYC_AX); 2653 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2654 tty_reset(tty); 2655 else { 2656 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2657 if (have_ax) 2658 tty_puts(tty, "\033[39m"); 2659 else if (tc->fg != 7) 2660 tty_putcode1(tty, TTYC_SETAF, 7); 2661 tc->fg = gc->fg; 2662 } 2663 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2664 if (have_ax) 2665 tty_puts(tty, "\033[49m"); 2666 else if (tc->bg != 0) 2667 tty_putcode1(tty, TTYC_SETAB, 0); 2668 tc->bg = gc->bg; 2669 } 2670 } 2671 } 2672 2673 /* Set the foreground colour. */ 2674 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2675 tty_colours_fg(tty, gc); 2676 2677 /* 2678 * Set the background colour. This must come after the foreground as 2679 * tty_colour_fg() can call tty_reset(). 2680 */ 2681 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2682 tty_colours_bg(tty, gc); 2683 2684 /* Set the underscore colour. */ 2685 if (gc->us != tc->us) 2686 tty_colours_us(tty, gc); 2687 } 2688 2689 static void 2690 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2691 struct grid_cell *gc) 2692 { 2693 u_char r, g, b; 2694 u_int colours; 2695 int c; 2696 2697 /* 2698 * Perform substitution if this pane has a palette. If the bright 2699 * attribute is set and Nobr is not present, use the bright entry in 2700 * the palette by changing to the aixterm colour 2701 */ 2702 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2703 c = gc->fg; 2704 if (c < 8 && 2705 gc->attr & GRID_ATTR_BRIGHT && 2706 !tty_term_has(tty->term, TTYC_NOBR)) 2707 c += 90; 2708 if ((c = colour_palette_get(palette, c)) != -1) 2709 gc->fg = c; 2710 } 2711 2712 /* Is this a 24-bit colour? */ 2713 if (gc->fg & COLOUR_FLAG_RGB) { 2714 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2715 if (tty->term->flags & TERM_RGBCOLOURS) 2716 return; 2717 colour_split_rgb(gc->fg, &r, &g, &b); 2718 gc->fg = colour_find_rgb(r, g, b); 2719 } 2720 2721 /* How many colours does this terminal have? */ 2722 if (tty->term->flags & TERM_256COLOURS) 2723 colours = 256; 2724 else 2725 colours = tty_term_number(tty->term, TTYC_COLORS); 2726 2727 /* Is this a 256-colour colour? */ 2728 if (gc->fg & COLOUR_FLAG_256) { 2729 /* And not a 256 colour mode? */ 2730 if (colours < 256) { 2731 gc->fg = colour_256to16(gc->fg); 2732 if (gc->fg & 8) { 2733 gc->fg &= 7; 2734 if (colours >= 16) 2735 gc->fg += 90; 2736 } 2737 } 2738 return; 2739 } 2740 2741 /* Is this an aixterm colour? */ 2742 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2743 gc->fg -= 90; 2744 gc->attr |= GRID_ATTR_BRIGHT; 2745 } 2746 } 2747 2748 static void 2749 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2750 struct grid_cell *gc) 2751 { 2752 u_char r, g, b; 2753 u_int colours; 2754 int c; 2755 2756 /* Perform substitution if this pane has a palette. */ 2757 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2758 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2759 gc->bg = c; 2760 } 2761 2762 /* Is this a 24-bit colour? */ 2763 if (gc->bg & COLOUR_FLAG_RGB) { 2764 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2765 if (tty->term->flags & TERM_RGBCOLOURS) 2766 return; 2767 colour_split_rgb(gc->bg, &r, &g, &b); 2768 gc->bg = colour_find_rgb(r, g, b); 2769 } 2770 2771 /* How many colours does this terminal have? */ 2772 if (tty->term->flags & TERM_256COLOURS) 2773 colours = 256; 2774 else 2775 colours = tty_term_number(tty->term, TTYC_COLORS); 2776 2777 /* Is this a 256-colour colour? */ 2778 if (gc->bg & COLOUR_FLAG_256) { 2779 /* 2780 * And not a 256 colour mode? Translate to 16-colour 2781 * palette. Bold background doesn't exist portably, so just 2782 * discard the bold bit if set. 2783 */ 2784 if (colours < 256) { 2785 gc->bg = colour_256to16(gc->bg); 2786 if (gc->bg & 8) { 2787 gc->bg &= 7; 2788 if (colours >= 16) 2789 gc->bg += 90; 2790 } 2791 } 2792 return; 2793 } 2794 2795 /* Is this an aixterm colour? */ 2796 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2797 gc->bg -= 90; 2798 } 2799 2800 static void 2801 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2802 struct grid_cell *gc) 2803 { 2804 int c; 2805 2806 /* Perform substitution if this pane has a palette. */ 2807 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2808 if ((c = colour_palette_get(palette, gc->us)) != -1) 2809 gc->us = c; 2810 } 2811 2812 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2813 if (gc->us & COLOUR_FLAG_256) 2814 gc->us = colour_256toRGB (gc->us); 2815 } 2816 2817 static void 2818 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2819 { 2820 struct grid_cell *tc = &tty->cell; 2821 char s[32]; 2822 2823 /* Is this a 24-bit or 256-colour colour? */ 2824 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2825 if (tty_try_colour(tty, gc->fg, "38") == 0) 2826 goto save; 2827 /* Should not get here, already converted in tty_check_fg. */ 2828 return; 2829 } 2830 2831 /* Is this an aixterm bright colour? */ 2832 if (gc->fg >= 90 && gc->fg <= 97) { 2833 if (tty->term->flags & TERM_256COLOURS) { 2834 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2835 tty_puts(tty, s); 2836 } else 2837 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2838 goto save; 2839 } 2840 2841 /* Otherwise set the foreground colour. */ 2842 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2843 2844 save: 2845 /* Save the new values in the terminal current cell. */ 2846 tc->fg = gc->fg; 2847 } 2848 2849 static void 2850 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2851 { 2852 struct grid_cell *tc = &tty->cell; 2853 char s[32]; 2854 2855 /* Is this a 24-bit or 256-colour colour? */ 2856 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2857 if (tty_try_colour(tty, gc->bg, "48") == 0) 2858 goto save; 2859 /* Should not get here, already converted in tty_check_bg. */ 2860 return; 2861 } 2862 2863 /* Is this an aixterm bright colour? */ 2864 if (gc->bg >= 90 && gc->bg <= 97) { 2865 if (tty->term->flags & TERM_256COLOURS) { 2866 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2867 tty_puts(tty, s); 2868 } else 2869 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2870 goto save; 2871 } 2872 2873 /* Otherwise set the background colour. */ 2874 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2875 2876 save: 2877 /* Save the new values in the terminal current cell. */ 2878 tc->bg = gc->bg; 2879 } 2880 2881 static void 2882 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2883 { 2884 struct grid_cell *tc = &tty->cell; 2885 u_int c; 2886 u_char r, g, b; 2887 2888 /* Clear underline colour. */ 2889 if (gc->us == 0) { 2890 tty_putcode(tty, TTYC_OL); 2891 goto save; 2892 } 2893 2894 /* Must be an RGB colour - this should never happen. */ 2895 if (~gc->us & COLOUR_FLAG_RGB) 2896 return; 2897 2898 /* 2899 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2900 * capability format. Calculate the colour value. 2901 */ 2902 colour_split_rgb(gc->us, &r, &g, &b); 2903 c = (65536 * r) + (256 * g) + b; 2904 2905 /* 2906 * Write the colour. Only use setal if the RGB flag is set because the 2907 * non-RGB version may be wrong. 2908 */ 2909 if (tty_term_has(tty->term, TTYC_SETULC)) 2910 tty_putcode1(tty, TTYC_SETULC, c); 2911 else if (tty_term_has(tty->term, TTYC_SETAL) && 2912 tty_term_has(tty->term, TTYC_RGB)) 2913 tty_putcode1(tty, TTYC_SETAL, c); 2914 2915 save: 2916 /* Save the new values in the terminal current cell. */ 2917 tc->us = gc->us; 2918 } 2919 2920 static int 2921 tty_try_colour(struct tty *tty, int colour, const char *type) 2922 { 2923 u_char r, g, b; 2924 2925 if (colour & COLOUR_FLAG_256) { 2926 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2927 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2928 else if (tty_term_has(tty->term, TTYC_SETAB)) 2929 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2930 return (0); 2931 } 2932 2933 if (colour & COLOUR_FLAG_RGB) { 2934 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2935 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2936 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2937 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2938 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2939 return (0); 2940 } 2941 2942 return (-1); 2943 } 2944 2945 static void 2946 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2947 { 2948 memcpy(gc, &grid_default_cell, sizeof *gc); 2949 gc->fg = wp->palette.fg; 2950 gc->bg = wp->palette.bg; 2951 } 2952 2953 void 2954 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2955 { 2956 struct options *oo = wp->options; 2957 struct format_tree *ft; 2958 2959 memcpy(gc, &grid_default_cell, sizeof *gc); 2960 2961 if (wp->flags & PANE_STYLECHANGED) { 2962 log_debug("%%%u: style changed", wp->id); 2963 wp->flags &= ~PANE_STYLECHANGED; 2964 2965 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2966 FORMAT_NOJOBS); 2967 format_defaults(ft, NULL, NULL, NULL, wp); 2968 tty_window_default_style(&wp->cached_active_gc, wp); 2969 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2970 tty_window_default_style(&wp->cached_gc, wp); 2971 style_add(&wp->cached_gc, oo, "window-style", ft); 2972 format_free(ft); 2973 } 2974 2975 if (gc->fg == 8) { 2976 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2977 gc->fg = wp->cached_active_gc.fg; 2978 else 2979 gc->fg = wp->cached_gc.fg; 2980 } 2981 2982 if (gc->bg == 8) { 2983 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2984 gc->bg = wp->cached_active_gc.bg; 2985 else 2986 gc->bg = wp->cached_gc.bg; 2987 } 2988 } 2989 2990 static void 2991 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2992 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 2993 { 2994 struct grid_cell gc; 2995 2996 memcpy(&gc, &grid_default_cell, sizeof gc); 2997 gc.bg = bg; 2998 tty_attributes(tty, &gc, defaults, palette, hl); 2999 } 3000 3001 static void 3002 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 3003 { 3004 struct tty *tty = data; 3005 struct client *c = tty->client; 3006 3007 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3008 free(c->clipboard_panes); 3009 c->clipboard_panes = NULL; 3010 c->clipboard_npanes = 0; 3011 3012 tty->flags &= ~TTY_OSC52QUERY; 3013 } 3014 3015 void 3016 tty_clipboard_query(struct tty *tty) 3017 { 3018 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3019 3020 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3021 return; 3022 tty_putcode_ptr2(tty, TTYC_MS, "", "?"); 3023 3024 tty->flags |= TTY_OSC52QUERY; 3025 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3026 evtimer_add(&tty->clipboard_timer, &tv); 3027 } 3028