1 /* $OpenBSD: tty.c,v 1.427 2023/01/12 18:49:11 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 if (tty_term_has(tty->term, TTYC_ENBP)) 345 tty_putcode(tty, TTYC_ENBP); 346 347 evtimer_set(&tty->start_timer, tty_start_timer_callback, tty); 348 evtimer_add(&tty->start_timer, &tv); 349 350 tty->flags |= TTY_STARTED; 351 tty_invalidate(tty); 352 353 if (tty->ccolour != -1) 354 tty_force_cursor_colour(tty, -1); 355 356 tty->mouse_drag_flag = 0; 357 tty->mouse_drag_update = NULL; 358 tty->mouse_drag_release = NULL; 359 } 360 361 void 362 tty_send_requests(struct tty *tty) 363 { 364 if (~tty->flags & TTY_STARTED) 365 return; 366 367 if (tty->term->flags & TERM_VT100LIKE) { 368 if (~tty->term->flags & TTY_HAVEDA) 369 tty_puts(tty, "\033[c"); 370 if (~tty->flags & TTY_HAVEDA2) 371 tty_puts(tty, "\033[>c"); 372 if (~tty->flags & TTY_HAVEXDA) 373 tty_puts(tty, "\033[>q"); 374 if (~tty->flags & TTY_HAVEFG) 375 tty_puts(tty, "\033]10;?\033\\"); 376 if (~tty->flags & TTY_HAVEBG) 377 tty_puts(tty, "\033]11;?\033\\"); 378 } else 379 tty->flags |= TTY_ALL_REQUEST_FLAGS; 380 } 381 382 void 383 tty_stop_tty(struct tty *tty) 384 { 385 struct client *c = tty->client; 386 struct winsize ws; 387 388 if (!(tty->flags & TTY_STARTED)) 389 return; 390 tty->flags &= ~TTY_STARTED; 391 392 evtimer_del(&tty->start_timer); 393 394 event_del(&tty->timer); 395 tty->flags &= ~TTY_BLOCK; 396 397 event_del(&tty->event_in); 398 event_del(&tty->event_out); 399 400 /* 401 * Be flexible about error handling and try not kill the server just 402 * because the fd is invalid. Things like ssh -t can easily leave us 403 * with a dead tty. 404 */ 405 if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1) 406 return; 407 if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1) 408 return; 409 410 tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1)); 411 if (tty_acs_needed(tty)) 412 tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS)); 413 tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0)); 414 tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX)); 415 tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR)); 416 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 417 if (tty_term_has(tty->term, TTYC_SE)) 418 tty_raw(tty, tty_term_string(tty->term, TTYC_SE)); 419 else if (tty_term_has(tty->term, TTYC_SS)) 420 tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0)); 421 } 422 if (tty->ccolour != -1) 423 tty_raw(tty, tty_term_string(tty->term, TTYC_CR)); 424 425 tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM)); 426 if (tty_term_has(tty->term, TTYC_KMOUS)) { 427 tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l"); 428 tty_raw(tty, "\033[?1006l\033[?1005l"); 429 } 430 if (tty_term_has(tty->term, TTYC_DSBP)) 431 tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP)); 432 433 if (tty->term->flags & TERM_VT100LIKE) 434 tty_raw(tty, "\033[?7727l"); 435 tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS)); 436 tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS)); 437 438 if (tty_use_margin(tty)) 439 tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG)); 440 tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP)); 441 442 setblocking(c->fd, 1); 443 } 444 445 void 446 tty_close(struct tty *tty) 447 { 448 if (event_initialized(&tty->key_timer)) 449 evtimer_del(&tty->key_timer); 450 tty_stop_tty(tty); 451 452 if (tty->flags & TTY_OPENED) { 453 evbuffer_free(tty->in); 454 event_del(&tty->event_in); 455 evbuffer_free(tty->out); 456 event_del(&tty->event_out); 457 458 tty_term_free(tty->term); 459 tty_keys_free(tty); 460 461 tty->flags &= ~TTY_OPENED; 462 } 463 } 464 465 void 466 tty_free(struct tty *tty) 467 { 468 tty_close(tty); 469 } 470 471 void 472 tty_update_features(struct tty *tty) 473 { 474 struct client *c = tty->client; 475 476 if (tty_apply_features(tty->term, c->term_features)) 477 tty_term_apply_overrides(tty->term); 478 479 if (tty_use_margin(tty)) 480 tty_putcode(tty, TTYC_ENMG); 481 if (options_get_number(global_options, "extended-keys")) 482 tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS)); 483 if (options_get_number(global_options, "focus-events")) 484 tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS)); 485 if (tty->term->flags & TERM_VT100LIKE) 486 tty_puts(tty, "\033[?7727h"); 487 } 488 489 void 490 tty_raw(struct tty *tty, const char *s) 491 { 492 struct client *c = tty->client; 493 ssize_t n, slen; 494 u_int i; 495 496 slen = strlen(s); 497 for (i = 0; i < 5; i++) { 498 n = write(c->fd, s, slen); 499 if (n >= 0) { 500 s += n; 501 slen -= n; 502 if (slen == 0) 503 break; 504 } else if (n == -1 && errno != EAGAIN) 505 break; 506 usleep(100); 507 } 508 } 509 510 void 511 tty_putcode(struct tty *tty, enum tty_code_code code) 512 { 513 tty_puts(tty, tty_term_string(tty->term, code)); 514 } 515 516 void 517 tty_putcode1(struct tty *tty, enum tty_code_code code, int a) 518 { 519 if (a < 0) 520 return; 521 tty_puts(tty, tty_term_string1(tty->term, code, a)); 522 } 523 524 void 525 tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b) 526 { 527 if (a < 0 || b < 0) 528 return; 529 tty_puts(tty, tty_term_string2(tty->term, code, a, b)); 530 } 531 532 void 533 tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c) 534 { 535 if (a < 0 || b < 0 || c < 0) 536 return; 537 tty_puts(tty, tty_term_string3(tty->term, code, a, b, c)); 538 } 539 540 void 541 tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a) 542 { 543 if (a != NULL) 544 tty_puts(tty, tty_term_ptr1(tty->term, code, a)); 545 } 546 547 void 548 tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a, 549 const void *b) 550 { 551 if (a != NULL && b != NULL) 552 tty_puts(tty, tty_term_ptr2(tty->term, code, a, b)); 553 } 554 555 static void 556 tty_add(struct tty *tty, const char *buf, size_t len) 557 { 558 struct client *c = tty->client; 559 560 if (tty->flags & TTY_BLOCK) { 561 tty->discarded += len; 562 return; 563 } 564 565 evbuffer_add(tty->out, buf, len); 566 log_debug("%s: %.*s", c->name, (int)len, buf); 567 c->written += len; 568 569 if (tty_log_fd != -1) 570 write(tty_log_fd, buf, len); 571 if (tty->flags & TTY_STARTED) 572 event_add(&tty->event_out, NULL); 573 } 574 575 void 576 tty_puts(struct tty *tty, const char *s) 577 { 578 if (*s != '\0') 579 tty_add(tty, s, strlen(s)); 580 } 581 582 void 583 tty_putc(struct tty *tty, u_char ch) 584 { 585 const char *acs; 586 587 if ((tty->term->flags & TERM_NOAM) && 588 ch >= 0x20 && ch != 0x7f && 589 tty->cy == tty->sy - 1 && 590 tty->cx + 1 >= tty->sx) 591 return; 592 593 if (tty->cell.attr & GRID_ATTR_CHARSET) { 594 acs = tty_acs_get(tty, ch); 595 if (acs != NULL) 596 tty_add(tty, acs, strlen(acs)); 597 else 598 tty_add(tty, &ch, 1); 599 } else 600 tty_add(tty, &ch, 1); 601 602 if (ch >= 0x20 && ch != 0x7f) { 603 if (tty->cx >= tty->sx) { 604 tty->cx = 1; 605 if (tty->cy != tty->rlower) 606 tty->cy++; 607 608 /* 609 * On !am terminals, force the cursor position to where 610 * we think it should be after a line wrap - this means 611 * it works on sensible terminals as well. 612 */ 613 if (tty->term->flags & TERM_NOAM) 614 tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx); 615 } else 616 tty->cx++; 617 } 618 } 619 620 void 621 tty_putn(struct tty *tty, const void *buf, size_t len, u_int width) 622 { 623 if ((tty->term->flags & TERM_NOAM) && 624 tty->cy == tty->sy - 1 && 625 tty->cx + len >= tty->sx) 626 len = tty->sx - tty->cx - 1; 627 628 tty_add(tty, buf, len); 629 if (tty->cx + width > tty->sx) { 630 tty->cx = (tty->cx + width) - tty->sx; 631 if (tty->cx <= tty->sx) 632 tty->cy++; 633 else 634 tty->cx = tty->cy = UINT_MAX; 635 } else 636 tty->cx += width; 637 } 638 639 static void 640 tty_set_italics(struct tty *tty) 641 { 642 const char *s; 643 644 if (tty_term_has(tty->term, TTYC_SITM)) { 645 s = options_get_string(global_options, "default-terminal"); 646 if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) { 647 tty_putcode(tty, TTYC_SITM); 648 return; 649 } 650 } 651 tty_putcode(tty, TTYC_SMSO); 652 } 653 654 void 655 tty_set_title(struct tty *tty, const char *title) 656 { 657 if (!tty_term_has(tty->term, TTYC_TSL) || 658 !tty_term_has(tty->term, TTYC_FSL)) 659 return; 660 661 tty_putcode(tty, TTYC_TSL); 662 tty_puts(tty, title); 663 tty_putcode(tty, TTYC_FSL); 664 } 665 666 void 667 tty_set_path(struct tty *tty, const char *title) 668 { 669 if (!tty_term_has(tty->term, TTYC_SWD) || 670 !tty_term_has(tty->term, TTYC_FSL)) 671 return; 672 673 tty_putcode(tty, TTYC_SWD); 674 tty_puts(tty, title); 675 tty_putcode(tty, TTYC_FSL); 676 } 677 678 static void 679 tty_force_cursor_colour(struct tty *tty, int c) 680 { 681 u_char r, g, b; 682 char s[13]; 683 684 if (c != -1) 685 c = colour_force_rgb(c); 686 if (c == tty->ccolour) 687 return; 688 if (c == -1) 689 tty_putcode(tty, TTYC_CR); 690 else { 691 colour_split_rgb(c, &r, &g, &b); 692 xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b); 693 tty_putcode_ptr1(tty, TTYC_CS, s); 694 } 695 tty->ccolour = c; 696 } 697 698 static int 699 tty_update_cursor(struct tty *tty, int mode, struct screen *s) 700 { 701 enum screen_cursor_style cstyle; 702 int ccolour, changed, cmode = mode; 703 704 /* Set cursor colour if changed. */ 705 if (s != NULL) { 706 ccolour = s->ccolour; 707 if (s->ccolour == -1) 708 ccolour = s->default_ccolour; 709 tty_force_cursor_colour(tty, ccolour); 710 } 711 712 /* If cursor is off, set as invisible. */ 713 if (~cmode & MODE_CURSOR) { 714 if (tty->mode & MODE_CURSOR) 715 tty_putcode(tty, TTYC_CIVIS); 716 return (cmode); 717 } 718 719 /* Check if blinking or very visible flag changed or style changed. */ 720 if (s == NULL) 721 cstyle = tty->cstyle; 722 else { 723 cstyle = s->cstyle; 724 if (cstyle == SCREEN_CURSOR_DEFAULT) { 725 if (~cmode & MODE_CURSOR_BLINKING_SET) { 726 if (s->default_mode & MODE_CURSOR_BLINKING) 727 cmode |= MODE_CURSOR_BLINKING; 728 else 729 cmode &= ~MODE_CURSOR_BLINKING; 730 } 731 cstyle = s->default_cstyle; 732 } 733 } 734 735 /* If nothing changed, do nothing. */ 736 changed = cmode ^ tty->mode; 737 if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle) 738 return (cmode); 739 740 /* 741 * Set cursor style. If an explicit style has been set with DECSCUSR, 742 * set it if supported, otherwise send cvvis for blinking styles. 743 * 744 * If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis 745 * if either the blinking or very visible flags are set. 746 */ 747 tty_putcode(tty, TTYC_CNORM); 748 switch (cstyle) { 749 case SCREEN_CURSOR_DEFAULT: 750 if (tty->cstyle != SCREEN_CURSOR_DEFAULT) { 751 if (tty_term_has(tty->term, TTYC_SE)) 752 tty_putcode(tty, TTYC_SE); 753 else 754 tty_putcode1(tty, TTYC_SS, 0); 755 } 756 if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE)) 757 tty_putcode(tty, TTYC_CVVIS); 758 break; 759 case SCREEN_CURSOR_BLOCK: 760 if (tty_term_has(tty->term, TTYC_SS)) { 761 if (cmode & MODE_CURSOR_BLINKING) 762 tty_putcode1(tty, TTYC_SS, 1); 763 else 764 tty_putcode1(tty, TTYC_SS, 2); 765 } else if (cmode & MODE_CURSOR_BLINKING) 766 tty_putcode(tty, TTYC_CVVIS); 767 break; 768 case SCREEN_CURSOR_UNDERLINE: 769 if (tty_term_has(tty->term, TTYC_SS)) { 770 if (cmode & MODE_CURSOR_BLINKING) 771 tty_putcode1(tty, TTYC_SS, 3); 772 else 773 tty_putcode1(tty, TTYC_SS, 4); 774 } else if (cmode & MODE_CURSOR_BLINKING) 775 tty_putcode(tty, TTYC_CVVIS); 776 break; 777 case SCREEN_CURSOR_BAR: 778 if (tty_term_has(tty->term, TTYC_SS)) { 779 if (cmode & MODE_CURSOR_BLINKING) 780 tty_putcode1(tty, TTYC_SS, 5); 781 else 782 tty_putcode1(tty, TTYC_SS, 6); 783 } else if (cmode & MODE_CURSOR_BLINKING) 784 tty_putcode(tty, TTYC_CVVIS); 785 break; 786 } 787 tty->cstyle = cstyle; 788 return (cmode); 789 } 790 791 void 792 tty_update_mode(struct tty *tty, int mode, struct screen *s) 793 { 794 struct tty_term *term = tty->term; 795 struct client *c = tty->client; 796 int changed; 797 798 if (tty->flags & TTY_NOCURSOR) 799 mode &= ~MODE_CURSOR; 800 801 if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING) 802 mode |= MODE_CURSOR_BLINKING; 803 else 804 mode &= ~MODE_CURSOR_BLINKING; 805 806 changed = mode ^ tty->mode; 807 if (log_get_level() != 0 && changed != 0) { 808 log_debug("%s: current mode %s", c->name, 809 screen_mode_to_string(tty->mode)); 810 log_debug("%s: setting mode %s", c->name, 811 screen_mode_to_string(mode)); 812 } 813 814 if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) { 815 /* 816 * If the mouse modes have changed, clear then all and apply 817 * again. There are differences in how terminals track the 818 * various bits. 819 */ 820 tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l"); 821 if (mode & ALL_MOUSE_MODES) 822 tty_puts(tty, "\033[?1006h"); 823 if (mode & MODE_MOUSE_ALL) 824 tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h"); 825 else if (mode & MODE_MOUSE_BUTTON) 826 tty_puts(tty, "\033[?1000h\033[?1002h"); 827 else if (mode & MODE_MOUSE_STANDARD) 828 tty_puts(tty, "\033[?1000h"); 829 } 830 tty->mode = mode; 831 } 832 833 static void 834 tty_emulate_repeat(struct tty *tty, enum tty_code_code code, 835 enum tty_code_code code1, u_int n) 836 { 837 if (tty_term_has(tty->term, code)) 838 tty_putcode1(tty, code, n); 839 else { 840 while (n-- > 0) 841 tty_putcode(tty, code1); 842 } 843 } 844 845 static void 846 tty_repeat_space(struct tty *tty, u_int n) 847 { 848 static char s[500]; 849 850 if (*s != ' ') 851 memset(s, ' ', sizeof s); 852 853 while (n > sizeof s) { 854 tty_putn(tty, s, sizeof s, sizeof s); 855 n -= sizeof s; 856 } 857 if (n != 0) 858 tty_putn(tty, s, n, n); 859 } 860 861 /* Is this window bigger than the terminal? */ 862 int 863 tty_window_bigger(struct tty *tty) 864 { 865 struct client *c = tty->client; 866 struct window *w = c->session->curw->window; 867 868 return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy); 869 } 870 871 /* What offset should this window be drawn at? */ 872 int 873 tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 874 { 875 *ox = tty->oox; 876 *oy = tty->ooy; 877 *sx = tty->osx; 878 *sy = tty->osy; 879 880 return (tty->oflag); 881 } 882 883 /* What offset should this window be drawn at? */ 884 static int 885 tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy) 886 { 887 struct client *c = tty->client; 888 struct window *w = c->session->curw->window; 889 struct window_pane *wp = server_client_get_pane(c); 890 u_int cx, cy, lines; 891 892 lines = status_line_size(c); 893 894 if (tty->sx >= w->sx && tty->sy - lines >= w->sy) { 895 *ox = 0; 896 *oy = 0; 897 *sx = w->sx; 898 *sy = w->sy; 899 900 c->pan_window = NULL; 901 return (0); 902 } 903 904 *sx = tty->sx; 905 *sy = tty->sy - lines; 906 907 if (c->pan_window == w) { 908 if (*sx >= w->sx) 909 c->pan_ox = 0; 910 else if (c->pan_ox + *sx > w->sx) 911 c->pan_ox = w->sx - *sx; 912 *ox = c->pan_ox; 913 if (*sy >= w->sy) 914 c->pan_oy = 0; 915 else if (c->pan_oy + *sy > w->sy) 916 c->pan_oy = w->sy - *sy; 917 *oy = c->pan_oy; 918 return (1); 919 } 920 921 if (~wp->screen->mode & MODE_CURSOR) { 922 *ox = 0; 923 *oy = 0; 924 } else { 925 cx = wp->xoff + wp->screen->cx; 926 cy = wp->yoff + wp->screen->cy; 927 928 if (cx < *sx) 929 *ox = 0; 930 else if (cx > w->sx - *sx) 931 *ox = w->sx - *sx; 932 else 933 *ox = cx - *sx / 2; 934 935 if (cy < *sy) 936 *oy = 0; 937 else if (cy > w->sy - *sy) 938 *oy = w->sy - *sy; 939 else 940 *oy = cy - *sy / 2; 941 } 942 943 c->pan_window = NULL; 944 return (1); 945 } 946 947 /* Update stored offsets for a window and redraw if necessary. */ 948 void 949 tty_update_window_offset(struct window *w) 950 { 951 struct client *c; 952 953 TAILQ_FOREACH(c, &clients, entry) { 954 if (c->session != NULL && 955 c->session->curw != NULL && 956 c->session->curw->window == w) 957 tty_update_client_offset(c); 958 } 959 } 960 961 /* Update stored offsets for a client and redraw if necessary. */ 962 void 963 tty_update_client_offset(struct client *c) 964 { 965 u_int ox, oy, sx, sy; 966 967 if (~c->flags & CLIENT_TERMINAL) 968 return; 969 970 c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy); 971 if (ox == c->tty.oox && 972 oy == c->tty.ooy && 973 sx == c->tty.osx && 974 sy == c->tty.osy) 975 return; 976 977 log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)", 978 __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy, 979 ox, oy, sx, sy); 980 981 c->tty.oox = ox; 982 c->tty.ooy = oy; 983 c->tty.osx = sx; 984 c->tty.osy = sy; 985 986 c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS); 987 } 988 989 /* 990 * Is the region large enough to be worth redrawing once later rather than 991 * probably several times now? Currently yes if it is more than 50% of the 992 * pane. 993 */ 994 static int 995 tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx) 996 { 997 return (ctx->orlower - ctx->orupper >= ctx->sy / 2); 998 } 999 1000 /* 1001 * Return if BCE is needed but the terminal doesn't have it - it'll need to be 1002 * emulated. 1003 */ 1004 static int 1005 tty_fake_bce(const struct tty *tty, const struct grid_cell *gc, u_int bg) 1006 { 1007 if (tty_term_flag(tty->term, TTYC_BCE)) 1008 return (0); 1009 if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc->bg)) 1010 return (1); 1011 return (0); 1012 } 1013 1014 /* 1015 * Redraw scroll region using data from screen (already updated). Used when 1016 * CSR not supported, or window is a pane that doesn't take up the full 1017 * width of the terminal. 1018 */ 1019 static void 1020 tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx) 1021 { 1022 struct client *c = tty->client; 1023 u_int i; 1024 1025 /* 1026 * If region is large, schedule a redraw. In most cases this is likely 1027 * to be followed by some more scrolling. 1028 */ 1029 if (tty_large_region(tty, ctx)) { 1030 log_debug("%s: %s large redraw", __func__, c->name); 1031 ctx->redraw_cb(ctx); 1032 return; 1033 } 1034 1035 for (i = ctx->orupper; i <= ctx->orlower; i++) 1036 tty_draw_pane(tty, ctx, i); 1037 } 1038 1039 /* Is this position visible in the pane? */ 1040 static int 1041 tty_is_visible(__unused struct tty *tty, const struct tty_ctx *ctx, u_int px, 1042 u_int py, u_int nx, u_int ny) 1043 { 1044 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1045 1046 if (!ctx->bigger) 1047 return (1); 1048 1049 if (xoff + nx <= ctx->wox || xoff >= ctx->wox + ctx->wsx || 1050 yoff + ny <= ctx->woy || yoff >= ctx->woy + ctx->wsy) 1051 return (0); 1052 return (1); 1053 } 1054 1055 /* Clamp line position to visible part of pane. */ 1056 static int 1057 tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1058 u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry) 1059 { 1060 u_int xoff = ctx->rxoff + px; 1061 1062 if (!tty_is_visible(tty, ctx, px, py, nx, 1)) 1063 return (0); 1064 *ry = ctx->yoff + py - ctx->woy; 1065 1066 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1067 /* All visible. */ 1068 *i = 0; 1069 *x = ctx->xoff + px - ctx->wox; 1070 *rx = nx; 1071 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1072 /* Both left and right not visible. */ 1073 *i = ctx->wox; 1074 *x = 0; 1075 *rx = ctx->wsx; 1076 } else if (xoff < ctx->wox) { 1077 /* Left not visible. */ 1078 *i = ctx->wox - (ctx->xoff + px); 1079 *x = 0; 1080 *rx = nx - *i; 1081 } else { 1082 /* Right not visible. */ 1083 *i = 0; 1084 *x = (ctx->xoff + px) - ctx->wox; 1085 *rx = ctx->wsx - *x; 1086 } 1087 if (*rx > nx) 1088 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1089 1090 return (1); 1091 } 1092 1093 /* Clear a line. */ 1094 static void 1095 tty_clear_line(struct tty *tty, const struct grid_cell *defaults, u_int py, 1096 u_int px, u_int nx, u_int bg) 1097 { 1098 struct client *c = tty->client; 1099 struct overlay_ranges r; 1100 u_int i; 1101 1102 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1103 1104 /* Nothing to clear. */ 1105 if (nx == 0) 1106 return; 1107 1108 /* If genuine BCE is available, can try escape sequences. */ 1109 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1110 /* Off the end of the line, use EL if available. */ 1111 if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) { 1112 tty_cursor(tty, px, py); 1113 tty_putcode(tty, TTYC_EL); 1114 return; 1115 } 1116 1117 /* At the start of the line. Use EL1. */ 1118 if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) { 1119 tty_cursor(tty, px + nx - 1, py); 1120 tty_putcode(tty, TTYC_EL1); 1121 return; 1122 } 1123 1124 /* Section of line. Use ECH if possible. */ 1125 if (tty_term_has(tty->term, TTYC_ECH)) { 1126 tty_cursor(tty, px, py); 1127 tty_putcode1(tty, TTYC_ECH, nx); 1128 return; 1129 } 1130 } 1131 1132 /* 1133 * Couldn't use an escape sequence, use spaces. Clear only the visible 1134 * bit if there is an overlay. 1135 */ 1136 tty_check_overlay_range(tty, px, py, nx, &r); 1137 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 1138 if (r.nx[i] == 0) 1139 continue; 1140 tty_cursor(tty, r.px[i], py); 1141 tty_repeat_space(tty, r.nx[i]); 1142 } 1143 } 1144 1145 /* Clear a line, adjusting to visible part of pane. */ 1146 static void 1147 tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1148 u_int px, u_int nx, u_int bg) 1149 { 1150 struct client *c = tty->client; 1151 u_int i, x, rx, ry; 1152 1153 log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py); 1154 1155 if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry)) 1156 tty_clear_line(tty, &ctx->defaults, ry, x, rx, bg); 1157 } 1158 1159 /* Clamp area position to visible part of pane. */ 1160 static int 1161 tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py, 1162 u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx, 1163 u_int *ry) 1164 { 1165 u_int xoff = ctx->rxoff + px, yoff = ctx->ryoff + py; 1166 1167 if (!tty_is_visible(tty, ctx, px, py, nx, ny)) 1168 return (0); 1169 1170 if (xoff >= ctx->wox && xoff + nx <= ctx->wox + ctx->wsx) { 1171 /* All visible. */ 1172 *i = 0; 1173 *x = ctx->xoff + px - ctx->wox; 1174 *rx = nx; 1175 } else if (xoff < ctx->wox && xoff + nx > ctx->wox + ctx->wsx) { 1176 /* Both left and right not visible. */ 1177 *i = ctx->wox; 1178 *x = 0; 1179 *rx = ctx->wsx; 1180 } else if (xoff < ctx->wox) { 1181 /* Left not visible. */ 1182 *i = ctx->wox - (ctx->xoff + px); 1183 *x = 0; 1184 *rx = nx - *i; 1185 } else { 1186 /* Right not visible. */ 1187 *i = 0; 1188 *x = (ctx->xoff + px) - ctx->wox; 1189 *rx = ctx->wsx - *x; 1190 } 1191 if (*rx > nx) 1192 fatalx("%s: x too big, %u > %u", __func__, *rx, nx); 1193 1194 if (yoff >= ctx->woy && yoff + ny <= ctx->woy + ctx->wsy) { 1195 /* All visible. */ 1196 *j = 0; 1197 *y = ctx->yoff + py - ctx->woy; 1198 *ry = ny; 1199 } else if (yoff < ctx->woy && yoff + ny > ctx->woy + ctx->wsy) { 1200 /* Both top and bottom not visible. */ 1201 *j = ctx->woy; 1202 *y = 0; 1203 *ry = ctx->wsy; 1204 } else if (yoff < ctx->woy) { 1205 /* Top not visible. */ 1206 *j = ctx->woy - (ctx->yoff + py); 1207 *y = 0; 1208 *ry = ny - *j; 1209 } else { 1210 /* Bottom not visible. */ 1211 *j = 0; 1212 *y = (ctx->yoff + py) - ctx->woy; 1213 *ry = ctx->wsy - *y; 1214 } 1215 if (*ry > ny) 1216 fatalx("%s: y too big, %u > %u", __func__, *ry, ny); 1217 1218 return (1); 1219 } 1220 1221 /* Clear an area, adjusting to visible part of pane. */ 1222 static void 1223 tty_clear_area(struct tty *tty, const struct grid_cell *defaults, u_int py, 1224 u_int ny, u_int px, u_int nx, u_int bg) 1225 { 1226 struct client *c = tty->client; 1227 u_int yy; 1228 char tmp[64]; 1229 1230 log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py); 1231 1232 /* Nothing to clear. */ 1233 if (nx == 0 || ny == 0) 1234 return; 1235 1236 /* If genuine BCE is available, can try escape sequences. */ 1237 if (c->overlay_check == NULL && !tty_fake_bce(tty, defaults, bg)) { 1238 /* Use ED if clearing off the bottom of the terminal. */ 1239 if (px == 0 && 1240 px + nx >= tty->sx && 1241 py + ny >= tty->sy && 1242 tty_term_has(tty->term, TTYC_ED)) { 1243 tty_cursor(tty, 0, py); 1244 tty_putcode(tty, TTYC_ED); 1245 return; 1246 } 1247 1248 /* 1249 * On VT420 compatible terminals we can use DECFRA if the 1250 * background colour isn't default (because it doesn't work 1251 * after SGR 0). 1252 */ 1253 if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) { 1254 xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x", 1255 py + 1, px + 1, py + ny, px + nx); 1256 tty_puts(tty, tmp); 1257 return; 1258 } 1259 1260 /* Full lines can be scrolled away to clear them. */ 1261 if (px == 0 && 1262 px + nx >= tty->sx && 1263 ny > 2 && 1264 tty_term_has(tty->term, TTYC_CSR) && 1265 tty_term_has(tty->term, TTYC_INDN)) { 1266 tty_region(tty, py, py + ny - 1); 1267 tty_margin_off(tty); 1268 tty_putcode1(tty, TTYC_INDN, ny); 1269 return; 1270 } 1271 1272 /* 1273 * If margins are supported, can just scroll the area off to 1274 * clear it. 1275 */ 1276 if (nx > 2 && 1277 ny > 2 && 1278 tty_term_has(tty->term, TTYC_CSR) && 1279 tty_use_margin(tty) && 1280 tty_term_has(tty->term, TTYC_INDN)) { 1281 tty_region(tty, py, py + ny - 1); 1282 tty_margin(tty, px, px + nx - 1); 1283 tty_putcode1(tty, TTYC_INDN, ny); 1284 return; 1285 } 1286 } 1287 1288 /* Couldn't use an escape sequence, loop over the lines. */ 1289 for (yy = py; yy < py + ny; yy++) 1290 tty_clear_line(tty, defaults, yy, px, nx, bg); 1291 } 1292 1293 /* Clear an area in a pane. */ 1294 static void 1295 tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py, 1296 u_int ny, u_int px, u_int nx, u_int bg) 1297 { 1298 u_int i, j, x, y, rx, ry; 1299 1300 if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry)) 1301 tty_clear_area(tty, &ctx->defaults, y, ry, x, rx, bg); 1302 } 1303 1304 static void 1305 tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py) 1306 { 1307 struct screen *s = ctx->s; 1308 u_int nx = ctx->sx, i, x, rx, ry; 1309 1310 log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger); 1311 1312 if (!ctx->bigger) { 1313 tty_draw_line(tty, s, 0, py, nx, ctx->xoff, ctx->yoff + py, 1314 &ctx->defaults, ctx->palette); 1315 return; 1316 } 1317 if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry)) { 1318 tty_draw_line(tty, s, i, py, rx, x, ry, &ctx->defaults, 1319 ctx->palette); 1320 } 1321 } 1322 1323 static const struct grid_cell * 1324 tty_check_codeset(struct tty *tty, const struct grid_cell *gc) 1325 { 1326 static struct grid_cell new; 1327 int c; 1328 1329 /* Characters less than 0x7f are always fine, no matter what. */ 1330 if (gc->data.size == 1 && *gc->data.data < 0x7f) 1331 return (gc); 1332 1333 /* UTF-8 terminal and a UTF-8 character - fine. */ 1334 if (tty->client->flags & CLIENT_UTF8) 1335 return (gc); 1336 memcpy(&new, gc, sizeof new); 1337 1338 /* See if this can be mapped to an ACS character. */ 1339 c = tty_acs_reverse_get(tty, gc->data.data, gc->data.size); 1340 if (c != -1) { 1341 utf8_set(&new.data, c); 1342 new.attr |= GRID_ATTR_CHARSET; 1343 return (&new); 1344 } 1345 1346 /* Replace by the right number of underscores. */ 1347 new.data.size = gc->data.width; 1348 if (new.data.size > UTF8_SIZE) 1349 new.data.size = UTF8_SIZE; 1350 memset(new.data.data, '_', new.data.size); 1351 return (&new); 1352 } 1353 1354 /* 1355 * Check if a single character is obstructed by the overlay and return a 1356 * boolean. 1357 */ 1358 static int 1359 tty_check_overlay(struct tty *tty, u_int px, u_int py) 1360 { 1361 struct overlay_ranges r; 1362 1363 /* 1364 * A unit width range will always return nx[2] == 0 from a check, even 1365 * with multiple overlays, so it's sufficient to check just the first 1366 * two entries. 1367 */ 1368 tty_check_overlay_range(tty, px, py, 1, &r); 1369 if (r.nx[0] + r.nx[1] == 0) 1370 return (0); 1371 return (1); 1372 } 1373 1374 /* Return parts of the input range which are visible. */ 1375 static void 1376 tty_check_overlay_range(struct tty *tty, u_int px, u_int py, u_int nx, 1377 struct overlay_ranges *r) 1378 { 1379 struct client *c = tty->client; 1380 1381 if (c->overlay_check == NULL) { 1382 r->px[0] = px; 1383 r->nx[0] = nx; 1384 r->px[1] = 0; 1385 r->nx[1] = 0; 1386 r->px[2] = 0; 1387 r->nx[2] = 0; 1388 return; 1389 } 1390 1391 c->overlay_check(c, c->overlay_data, px, py, nx, r); 1392 } 1393 1394 void 1395 tty_draw_line(struct tty *tty, struct screen *s, u_int px, u_int py, u_int nx, 1396 u_int atx, u_int aty, const struct grid_cell *defaults, 1397 struct colour_palette *palette) 1398 { 1399 struct grid *gd = s->grid; 1400 struct grid_cell gc, last; 1401 const struct grid_cell *gcp; 1402 struct grid_line *gl; 1403 struct client *c = tty->client; 1404 struct overlay_ranges r; 1405 u_int i, j, ux, sx, width, hidden, eux, nxx; 1406 u_int cellsize; 1407 int flags, cleared = 0, wrapped = 0; 1408 char buf[512]; 1409 size_t len; 1410 1411 log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__, 1412 px, py, nx, atx, aty); 1413 log_debug("%s: defaults: fg=%d, bg=%d", __func__, defaults->fg, 1414 defaults->bg); 1415 1416 /* 1417 * py is the line in the screen to draw. 1418 * px is the start x and nx is the width to draw. 1419 * atx,aty is the line on the terminal to draw it. 1420 */ 1421 1422 flags = (tty->flags & TTY_NOCURSOR); 1423 tty->flags |= TTY_NOCURSOR; 1424 tty_update_mode(tty, tty->mode, s); 1425 1426 tty_region_off(tty); 1427 tty_margin_off(tty); 1428 1429 /* 1430 * Clamp the width to cellsize - note this is not cellused, because 1431 * there may be empty background cells after it (from BCE). 1432 */ 1433 sx = screen_size_x(s); 1434 if (nx > sx) 1435 nx = sx; 1436 cellsize = grid_get_line(gd, gd->hsize + py)->cellsize; 1437 if (sx > cellsize) 1438 sx = cellsize; 1439 if (sx > tty->sx) 1440 sx = tty->sx; 1441 if (sx > nx) 1442 sx = nx; 1443 ux = 0; 1444 1445 if (py == 0) 1446 gl = NULL; 1447 else 1448 gl = grid_get_line(gd, gd->hsize + py - 1); 1449 if (gl == NULL || 1450 (~gl->flags & GRID_LINE_WRAPPED) || 1451 atx != 0 || 1452 tty->cx < tty->sx || 1453 nx < tty->sx) { 1454 if (nx < tty->sx && 1455 atx == 0 && 1456 px + sx != nx && 1457 tty_term_has(tty->term, TTYC_EL1) && 1458 !tty_fake_bce(tty, defaults, 8) && 1459 c->overlay_check == NULL) { 1460 tty_default_attributes(tty, defaults, palette, 8, 1461 s->hyperlinks); 1462 tty_cursor(tty, nx - 1, aty); 1463 tty_putcode(tty, TTYC_EL1); 1464 cleared = 1; 1465 } 1466 } else { 1467 log_debug("%s: wrapped line %u", __func__, aty); 1468 wrapped = 1; 1469 } 1470 1471 memcpy(&last, &grid_default_cell, sizeof last); 1472 len = 0; 1473 width = 0; 1474 1475 for (i = 0; i < sx; i++) { 1476 grid_view_get_cell(gd, px + i, py, &gc); 1477 gcp = tty_check_codeset(tty, &gc); 1478 if (len != 0 && 1479 (!tty_check_overlay(tty, atx + ux + width, aty) || 1480 (gcp->attr & GRID_ATTR_CHARSET) || 1481 gcp->flags != last.flags || 1482 gcp->attr != last.attr || 1483 gcp->fg != last.fg || 1484 gcp->bg != last.bg || 1485 gcp->us != last.us || 1486 gcp->link != last.link || 1487 ux + width + gcp->data.width > nx || 1488 (sizeof buf) - len < gcp->data.size)) { 1489 tty_attributes(tty, &last, defaults, palette, 1490 s->hyperlinks); 1491 if (last.flags & GRID_FLAG_CLEARED) { 1492 log_debug("%s: %zu cleared", __func__, len); 1493 tty_clear_line(tty, defaults, aty, atx + ux, 1494 width, last.bg); 1495 } else { 1496 if (!wrapped || atx != 0 || ux != 0) 1497 tty_cursor(tty, atx + ux, aty); 1498 tty_putn(tty, buf, len, width); 1499 } 1500 ux += width; 1501 1502 len = 0; 1503 width = 0; 1504 wrapped = 0; 1505 } 1506 1507 if (gcp->flags & GRID_FLAG_SELECTED) 1508 screen_select_cell(s, &last, gcp); 1509 else 1510 memcpy(&last, gcp, sizeof last); 1511 1512 tty_check_overlay_range(tty, atx + ux, aty, gcp->data.width, 1513 &r); 1514 hidden = 0; 1515 for (j = 0; j < OVERLAY_MAX_RANGES; j++) 1516 hidden += r.nx[j]; 1517 hidden = gcp->data.width - hidden; 1518 if (hidden != 0 && hidden == gcp->data.width) { 1519 if (~gcp->flags & GRID_FLAG_PADDING) 1520 ux += gcp->data.width; 1521 } else if (hidden != 0 || ux + gcp->data.width > nx) { 1522 if (~gcp->flags & GRID_FLAG_PADDING) { 1523 tty_attributes(tty, &last, defaults, palette, 1524 s->hyperlinks); 1525 for (j = 0; j < OVERLAY_MAX_RANGES; j++) { 1526 if (r.nx[j] == 0) 1527 continue; 1528 /* Effective width drawn so far. */ 1529 eux = r.px[j] - atx; 1530 if (eux < nx) { 1531 tty_cursor(tty, r.px[j], aty); 1532 nxx = nx - eux; 1533 if (r.nx[j] > nxx) 1534 r.nx[j] = nxx; 1535 tty_repeat_space(tty, r.nx[j]); 1536 ux = eux + r.nx[j]; 1537 } 1538 } 1539 } 1540 } else if (gcp->attr & GRID_ATTR_CHARSET) { 1541 tty_attributes(tty, &last, defaults, palette, 1542 s->hyperlinks); 1543 tty_cursor(tty, atx + ux, aty); 1544 for (j = 0; j < gcp->data.size; j++) 1545 tty_putc(tty, gcp->data.data[j]); 1546 ux += gcp->data.width; 1547 } else if (~gcp->flags & GRID_FLAG_PADDING) { 1548 memcpy(buf + len, gcp->data.data, gcp->data.size); 1549 len += gcp->data.size; 1550 width += gcp->data.width; 1551 } 1552 } 1553 if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) { 1554 tty_attributes(tty, &last, defaults, palette, s->hyperlinks); 1555 if (last.flags & GRID_FLAG_CLEARED) { 1556 log_debug("%s: %zu cleared (end)", __func__, len); 1557 tty_clear_line(tty, defaults, aty, atx + ux, width, 1558 last.bg); 1559 } else { 1560 if (!wrapped || atx != 0 || ux != 0) 1561 tty_cursor(tty, atx + ux, aty); 1562 tty_putn(tty, buf, len, width); 1563 } 1564 ux += width; 1565 } 1566 1567 if (!cleared && ux < nx) { 1568 log_debug("%s: %u to end of line (%zu cleared)", __func__, 1569 nx - ux, len); 1570 tty_default_attributes(tty, defaults, palette, 8, 1571 s->hyperlinks); 1572 tty_clear_line(tty, defaults, aty, atx + ux, nx - ux, 8); 1573 } 1574 1575 tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags; 1576 tty_update_mode(tty, tty->mode, s); 1577 } 1578 1579 void 1580 tty_sync_start(struct tty *tty) 1581 { 1582 if (tty->flags & TTY_BLOCK) 1583 return; 1584 if (tty->flags & TTY_SYNCING) 1585 return; 1586 tty->flags |= TTY_SYNCING; 1587 1588 if (tty_term_has(tty->term, TTYC_SYNC)) { 1589 log_debug("%s sync start", tty->client->name); 1590 tty_putcode1(tty, TTYC_SYNC, 1); 1591 } 1592 } 1593 1594 void 1595 tty_sync_end(struct tty *tty) 1596 { 1597 if (tty->flags & TTY_BLOCK) 1598 return; 1599 if (~tty->flags & TTY_SYNCING) 1600 return; 1601 tty->flags &= ~TTY_SYNCING; 1602 1603 if (tty_term_has(tty->term, TTYC_SYNC)) { 1604 log_debug("%s sync end", tty->client->name); 1605 tty_putcode1(tty, TTYC_SYNC, 2); 1606 } 1607 } 1608 1609 static int 1610 tty_client_ready(struct client *c) 1611 { 1612 if (c->session == NULL || c->tty.term == NULL) 1613 return (0); 1614 if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED)) 1615 return (0); 1616 if (c->tty.flags & TTY_FREEZE) 1617 return (0); 1618 return (1); 1619 } 1620 1621 void 1622 tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *), 1623 struct tty_ctx *ctx) 1624 { 1625 struct client *c; 1626 int state; 1627 1628 if (ctx->set_client_cb == NULL) 1629 return; 1630 TAILQ_FOREACH(c, &clients, entry) { 1631 if (ctx->allow_invisible_panes) { 1632 if (c->session == NULL || 1633 c->tty.term == NULL || 1634 c->flags & CLIENT_SUSPENDED) 1635 continue; 1636 } else { 1637 if (!tty_client_ready(c)) 1638 continue; 1639 state = ctx->set_client_cb(ctx, c); 1640 if (state == -1) 1641 break; 1642 if (state == 0) 1643 continue; 1644 } 1645 cmdfn(&c->tty, ctx); 1646 } 1647 } 1648 1649 void 1650 tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx) 1651 { 1652 struct client *c = tty->client; 1653 1654 if (ctx->bigger || 1655 !tty_full_width(tty, ctx) || 1656 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1657 (!tty_term_has(tty->term, TTYC_ICH) && 1658 !tty_term_has(tty->term, TTYC_ICH1)) || 1659 c->overlay_check != NULL) { 1660 tty_draw_pane(tty, ctx, ctx->ocy); 1661 return; 1662 } 1663 1664 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1665 ctx->s->hyperlinks); 1666 1667 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1668 1669 tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num); 1670 } 1671 1672 void 1673 tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx) 1674 { 1675 struct client *c = tty->client; 1676 1677 if (ctx->bigger || 1678 !tty_full_width(tty, ctx) || 1679 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1680 (!tty_term_has(tty->term, TTYC_DCH) && 1681 !tty_term_has(tty->term, TTYC_DCH1)) || 1682 c->overlay_check != NULL) { 1683 tty_draw_pane(tty, ctx, ctx->ocy); 1684 return; 1685 } 1686 1687 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1688 ctx->s->hyperlinks); 1689 1690 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1691 1692 tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num); 1693 } 1694 1695 void 1696 tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx) 1697 { 1698 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1699 ctx->s->hyperlinks); 1700 1701 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, ctx->num, ctx->bg); 1702 } 1703 1704 void 1705 tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx) 1706 { 1707 struct client *c = tty->client; 1708 1709 if (ctx->bigger || 1710 !tty_full_width(tty, ctx) || 1711 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1712 !tty_term_has(tty->term, TTYC_CSR) || 1713 !tty_term_has(tty->term, TTYC_IL1) || 1714 ctx->sx == 1 || 1715 ctx->sy == 1 || 1716 c->overlay_check != NULL) { 1717 tty_redraw_region(tty, ctx); 1718 return; 1719 } 1720 1721 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1722 ctx->s->hyperlinks); 1723 1724 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1725 tty_margin_off(tty); 1726 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1727 1728 tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num); 1729 tty->cx = tty->cy = UINT_MAX; 1730 } 1731 1732 void 1733 tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx) 1734 { 1735 struct client *c = tty->client; 1736 1737 if (ctx->bigger || 1738 !tty_full_width(tty, ctx) || 1739 tty_fake_bce(tty, &ctx->defaults, ctx->bg) || 1740 !tty_term_has(tty->term, TTYC_CSR) || 1741 !tty_term_has(tty->term, TTYC_DL1) || 1742 ctx->sx == 1 || 1743 ctx->sy == 1 || 1744 c->overlay_check != NULL) { 1745 tty_redraw_region(tty, ctx); 1746 return; 1747 } 1748 1749 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1750 ctx->s->hyperlinks); 1751 1752 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1753 tty_margin_off(tty); 1754 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1755 1756 tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num); 1757 tty->cx = tty->cy = UINT_MAX; 1758 } 1759 1760 void 1761 tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx) 1762 { 1763 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1764 ctx->s->hyperlinks); 1765 1766 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->sx, ctx->bg); 1767 } 1768 1769 void 1770 tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx) 1771 { 1772 u_int nx = ctx->sx - ctx->ocx; 1773 1774 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1775 ctx->s->hyperlinks); 1776 1777 tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg); 1778 } 1779 1780 void 1781 tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx) 1782 { 1783 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1784 ctx->s->hyperlinks); 1785 1786 tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg); 1787 } 1788 1789 void 1790 tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx) 1791 { 1792 struct client *c = tty->client; 1793 1794 if (ctx->ocy != ctx->orupper) 1795 return; 1796 1797 if (ctx->bigger || 1798 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1799 tty_fake_bce(tty, &ctx->defaults, 8) || 1800 !tty_term_has(tty->term, TTYC_CSR) || 1801 (!tty_term_has(tty->term, TTYC_RI) && 1802 !tty_term_has(tty->term, TTYC_RIN)) || 1803 ctx->sx == 1 || 1804 ctx->sy == 1 || 1805 c->overlay_check != NULL) { 1806 tty_redraw_region(tty, ctx); 1807 return; 1808 } 1809 1810 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1811 ctx->s->hyperlinks); 1812 1813 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1814 tty_margin_pane(tty, ctx); 1815 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1816 1817 if (tty_term_has(tty->term, TTYC_RI)) 1818 tty_putcode(tty, TTYC_RI); 1819 else 1820 tty_putcode1(tty, TTYC_RIN, 1); 1821 } 1822 1823 void 1824 tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx) 1825 { 1826 struct client *c = tty->client; 1827 1828 if (ctx->ocy != ctx->orlower) 1829 return; 1830 1831 if (ctx->bigger || 1832 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1833 tty_fake_bce(tty, &ctx->defaults, 8) || 1834 !tty_term_has(tty->term, TTYC_CSR) || 1835 ctx->sx == 1 || 1836 ctx->sy == 1 || 1837 c->overlay_check != NULL) { 1838 tty_redraw_region(tty, ctx); 1839 return; 1840 } 1841 1842 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1843 ctx->s->hyperlinks); 1844 1845 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1846 tty_margin_pane(tty, ctx); 1847 1848 /* 1849 * If we want to wrap a pane while using margins, the cursor needs to 1850 * be exactly on the right of the region. If the cursor is entirely off 1851 * the edge - move it back to the right. Some terminals are funny about 1852 * this and insert extra spaces, so only use the right if margins are 1853 * enabled. 1854 */ 1855 if (ctx->xoff + ctx->ocx > tty->rright) { 1856 if (!tty_use_margin(tty)) 1857 tty_cursor(tty, 0, ctx->yoff + ctx->ocy); 1858 else 1859 tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy); 1860 } else 1861 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy); 1862 1863 tty_putc(tty, '\n'); 1864 } 1865 1866 void 1867 tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx) 1868 { 1869 struct client *c = tty->client; 1870 u_int i; 1871 1872 if (ctx->bigger || 1873 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1874 tty_fake_bce(tty, &ctx->defaults, 8) || 1875 !tty_term_has(tty->term, TTYC_CSR) || 1876 ctx->sx == 1 || 1877 ctx->sy == 1 || 1878 c->overlay_check != NULL) { 1879 tty_redraw_region(tty, ctx); 1880 return; 1881 } 1882 1883 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1884 ctx->s->hyperlinks); 1885 1886 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1887 tty_margin_pane(tty, ctx); 1888 1889 if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) { 1890 if (!tty_use_margin(tty)) 1891 tty_cursor(tty, 0, tty->rlower); 1892 else 1893 tty_cursor(tty, tty->rright, tty->rlower); 1894 for (i = 0; i < ctx->num; i++) 1895 tty_putc(tty, '\n'); 1896 } else { 1897 if (tty->cy == UINT_MAX) 1898 tty_cursor(tty, 0, 0); 1899 else 1900 tty_cursor(tty, 0, tty->cy); 1901 tty_putcode1(tty, TTYC_INDN, ctx->num); 1902 } 1903 } 1904 1905 void 1906 tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx) 1907 { 1908 u_int i; 1909 struct client *c = tty->client; 1910 1911 if (ctx->bigger || 1912 (!tty_full_width(tty, ctx) && !tty_use_margin(tty)) || 1913 tty_fake_bce(tty, &ctx->defaults, 8) || 1914 !tty_term_has(tty->term, TTYC_CSR) || 1915 (!tty_term_has(tty->term, TTYC_RI) && 1916 !tty_term_has(tty->term, TTYC_RIN)) || 1917 ctx->sx == 1 || 1918 ctx->sy == 1 || 1919 c->overlay_check != NULL) { 1920 tty_redraw_region(tty, ctx); 1921 return; 1922 } 1923 1924 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1925 ctx->s->hyperlinks); 1926 1927 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 1928 tty_margin_pane(tty, ctx); 1929 tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper); 1930 1931 if (tty_term_has(tty->term, TTYC_RIN)) 1932 tty_putcode1(tty, TTYC_RIN, ctx->num); 1933 else { 1934 for (i = 0; i < ctx->num; i++) 1935 tty_putcode(tty, TTYC_RI); 1936 } 1937 } 1938 1939 void 1940 tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx) 1941 { 1942 u_int px, py, nx, ny; 1943 1944 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1945 ctx->s->hyperlinks); 1946 1947 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1948 tty_margin_off(tty); 1949 1950 px = 0; 1951 nx = ctx->sx; 1952 py = ctx->ocy + 1; 1953 ny = ctx->sy - ctx->ocy - 1; 1954 1955 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1956 1957 px = ctx->ocx; 1958 nx = ctx->sx - ctx->ocx; 1959 py = ctx->ocy; 1960 1961 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1962 } 1963 1964 void 1965 tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx) 1966 { 1967 u_int px, py, nx, ny; 1968 1969 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1970 ctx->s->hyperlinks); 1971 1972 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1973 tty_margin_off(tty); 1974 1975 px = 0; 1976 nx = ctx->sx; 1977 py = 0; 1978 ny = ctx->ocy; 1979 1980 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 1981 1982 px = 0; 1983 nx = ctx->ocx + 1; 1984 py = ctx->ocy; 1985 1986 tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg); 1987 } 1988 1989 void 1990 tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx) 1991 { 1992 u_int px, py, nx, ny; 1993 1994 tty_default_attributes(tty, &ctx->defaults, ctx->palette, ctx->bg, 1995 ctx->s->hyperlinks); 1996 1997 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 1998 tty_margin_off(tty); 1999 2000 px = 0; 2001 nx = ctx->sx; 2002 py = 0; 2003 ny = ctx->sy; 2004 2005 tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg); 2006 } 2007 2008 void 2009 tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx) 2010 { 2011 u_int i, j; 2012 2013 if (ctx->bigger) { 2014 ctx->redraw_cb(ctx); 2015 return; 2016 } 2017 2018 tty_attributes(tty, &grid_default_cell, &ctx->defaults, ctx->palette, 2019 ctx->s->hyperlinks); 2020 2021 tty_region_pane(tty, ctx, 0, ctx->sy - 1); 2022 tty_margin_off(tty); 2023 2024 for (j = 0; j < ctx->sy; j++) { 2025 tty_cursor_pane(tty, ctx, 0, j); 2026 for (i = 0; i < ctx->sx; i++) 2027 tty_putc(tty, 'E'); 2028 } 2029 } 2030 2031 void 2032 tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx) 2033 { 2034 const struct grid_cell *gcp = ctx->cell; 2035 struct screen *s = ctx->s; 2036 struct overlay_ranges r; 2037 u_int px, py, i, vis = 0; 2038 2039 px = ctx->xoff + ctx->ocx - ctx->wox; 2040 py = ctx->yoff + ctx->ocy - ctx->woy; 2041 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1) || 2042 (gcp->data.width == 1 && !tty_check_overlay(tty, px, py))) 2043 return; 2044 2045 /* Handle partially obstructed wide characters. */ 2046 if (gcp->data.width > 1) { 2047 tty_check_overlay_range(tty, px, py, gcp->data.width, &r); 2048 for (i = 0; i < OVERLAY_MAX_RANGES; i++) 2049 vis += r.nx[i]; 2050 if (vis < gcp->data.width) { 2051 tty_draw_line(tty, s, s->cx, s->cy, gcp->data.width, 2052 px, py, &ctx->defaults, ctx->palette); 2053 return; 2054 } 2055 } 2056 2057 if (ctx->xoff + ctx->ocx - ctx->wox > tty->sx - 1 && 2058 ctx->ocy == ctx->orlower && 2059 tty_full_width(tty, ctx)) 2060 tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower); 2061 2062 tty_margin_off(tty); 2063 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2064 2065 tty_cell(tty, ctx->cell, &ctx->defaults, ctx->palette, 2066 ctx->s->hyperlinks); 2067 } 2068 2069 void 2070 tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx) 2071 { 2072 struct overlay_ranges r; 2073 u_int i, px, py, cx; 2074 char *cp = ctx->ptr; 2075 2076 if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1)) 2077 return; 2078 2079 if (ctx->bigger && 2080 (ctx->xoff + ctx->ocx < ctx->wox || 2081 ctx->xoff + ctx->ocx + ctx->num > ctx->wox + ctx->wsx)) { 2082 if (!ctx->wrapped || 2083 !tty_full_width(tty, ctx) || 2084 (tty->term->flags & TERM_NOAM) || 2085 ctx->xoff + ctx->ocx != 0 || 2086 ctx->yoff + ctx->ocy != tty->cy + 1 || 2087 tty->cx < tty->sx || 2088 tty->cy == tty->rlower) 2089 tty_draw_pane(tty, ctx, ctx->ocy); 2090 else 2091 ctx->redraw_cb(ctx); 2092 return; 2093 } 2094 2095 tty_margin_off(tty); 2096 tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy); 2097 tty_attributes(tty, ctx->cell, &ctx->defaults, ctx->palette, ctx->s->hyperlinks); 2098 2099 /* Get tty position from pane position for overlay check. */ 2100 px = ctx->xoff + ctx->ocx - ctx->wox; 2101 py = ctx->yoff + ctx->ocy - ctx->woy; 2102 2103 tty_check_overlay_range(tty, px, py, ctx->num, &r); 2104 for (i = 0; i < OVERLAY_MAX_RANGES; i++) { 2105 if (r.nx[i] == 0) 2106 continue; 2107 /* Convert back to pane position for printing. */ 2108 cx = r.px[i] - ctx->xoff + ctx->wox; 2109 tty_cursor_pane_unless_wrap(tty, ctx, cx, ctx->ocy); 2110 tty_putn(tty, cp + r.px[i] - px, r.nx[i], r.nx[i]); 2111 } 2112 } 2113 2114 void 2115 tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx) 2116 { 2117 tty_set_selection(tty, ctx->ptr2, ctx->ptr, ctx->num); 2118 } 2119 2120 void 2121 tty_set_selection(struct tty *tty, const char *flags, const char *buf, 2122 size_t len) 2123 { 2124 char *encoded; 2125 size_t size; 2126 2127 if (~tty->flags & TTY_STARTED) 2128 return; 2129 if (!tty_term_has(tty->term, TTYC_MS)) 2130 return; 2131 2132 size = 4 * ((len + 2) / 3) + 1; /* storage for base64 */ 2133 encoded = xmalloc(size); 2134 2135 b64_ntop(buf, len, encoded, size); 2136 tty->flags |= TTY_NOBLOCK; 2137 tty_putcode_ptr2(tty, TTYC_MS, flags, encoded); 2138 2139 free(encoded); 2140 } 2141 2142 void 2143 tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx) 2144 { 2145 tty->flags |= TTY_NOBLOCK; 2146 tty_add(tty, ctx->ptr, ctx->num); 2147 tty_invalidate(tty); 2148 } 2149 2150 void 2151 tty_cmd_syncstart(struct tty *tty, const struct tty_ctx *ctx) 2152 { 2153 if (ctx->num == 0x11) { 2154 /* 2155 * This is an overlay and a command that moves the cursor so 2156 * start synchronized updates. 2157 */ 2158 tty_sync_start(tty); 2159 } else if (~ctx->num & 0x10) { 2160 /* 2161 * This is a pane. If there is an overlay, always start; 2162 * otherwise, only if requested. 2163 */ 2164 if (ctx->num || tty->client->overlay_draw != NULL) 2165 tty_sync_start(tty); 2166 } 2167 } 2168 2169 void 2170 tty_cell(struct tty *tty, const struct grid_cell *gc, 2171 const struct grid_cell *defaults, struct colour_palette *palette, 2172 struct hyperlinks *hl) 2173 { 2174 const struct grid_cell *gcp; 2175 2176 /* Skip last character if terminal is stupid. */ 2177 if ((tty->term->flags & TERM_NOAM) && 2178 tty->cy == tty->sy - 1 && 2179 tty->cx == tty->sx - 1) 2180 return; 2181 2182 /* If this is a padding character, do nothing. */ 2183 if (gc->flags & GRID_FLAG_PADDING) 2184 return; 2185 2186 /* Check the output codeset and apply attributes. */ 2187 gcp = tty_check_codeset(tty, gc); 2188 tty_attributes(tty, gcp, defaults, palette, hl); 2189 2190 /* If it is a single character, write with putc to handle ACS. */ 2191 if (gcp->data.size == 1) { 2192 tty_attributes(tty, gcp, defaults, palette, hl); 2193 if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f) 2194 return; 2195 tty_putc(tty, *gcp->data.data); 2196 return; 2197 } 2198 2199 /* Write the data. */ 2200 tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width); 2201 } 2202 2203 void 2204 tty_reset(struct tty *tty) 2205 { 2206 struct grid_cell *gc = &tty->cell; 2207 2208 if (!grid_cells_equal(gc, &grid_default_cell)) { 2209 if (gc->link != 0) 2210 tty_putcode_ptr2(tty, TTYC_HLS, "", ""); 2211 if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2212 tty_putcode(tty, TTYC_RMACS); 2213 tty_putcode(tty, TTYC_SGR0); 2214 memcpy(gc, &grid_default_cell, sizeof *gc); 2215 } 2216 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2217 } 2218 2219 static void 2220 tty_invalidate(struct tty *tty) 2221 { 2222 memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell); 2223 memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell); 2224 2225 tty->cx = tty->cy = UINT_MAX; 2226 tty->rupper = tty->rleft = UINT_MAX; 2227 tty->rlower = tty->rright = UINT_MAX; 2228 2229 if (tty->flags & TTY_STARTED) { 2230 if (tty_use_margin(tty)) 2231 tty_putcode(tty, TTYC_ENMG); 2232 tty_putcode(tty, TTYC_SGR0); 2233 2234 tty->mode = ALL_MODES; 2235 tty_update_mode(tty, MODE_CURSOR, NULL); 2236 2237 tty_cursor(tty, 0, 0); 2238 tty_region_off(tty); 2239 tty_margin_off(tty); 2240 } else 2241 tty->mode = MODE_CURSOR; 2242 } 2243 2244 /* Turn off margin. */ 2245 void 2246 tty_region_off(struct tty *tty) 2247 { 2248 tty_region(tty, 0, tty->sy - 1); 2249 } 2250 2251 /* Set region inside pane. */ 2252 static void 2253 tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper, 2254 u_int rlower) 2255 { 2256 tty_region(tty, ctx->yoff + rupper - ctx->woy, 2257 ctx->yoff + rlower - ctx->woy); 2258 } 2259 2260 /* Set region at absolute position. */ 2261 static void 2262 tty_region(struct tty *tty, u_int rupper, u_int rlower) 2263 { 2264 if (tty->rlower == rlower && tty->rupper == rupper) 2265 return; 2266 if (!tty_term_has(tty->term, TTYC_CSR)) 2267 return; 2268 2269 tty->rupper = rupper; 2270 tty->rlower = rlower; 2271 2272 /* 2273 * Some terminals (such as PuTTY) do not correctly reset the cursor to 2274 * 0,0 if it is beyond the last column (they do not reset their wrap 2275 * flag so further output causes a line feed). As a workaround, do an 2276 * explicit move to 0 first. 2277 */ 2278 if (tty->cx >= tty->sx) { 2279 if (tty->cy == UINT_MAX) 2280 tty_cursor(tty, 0, 0); 2281 else 2282 tty_cursor(tty, 0, tty->cy); 2283 } 2284 2285 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2286 tty->cx = tty->cy = UINT_MAX; 2287 } 2288 2289 /* Turn off margin. */ 2290 void 2291 tty_margin_off(struct tty *tty) 2292 { 2293 tty_margin(tty, 0, tty->sx - 1); 2294 } 2295 2296 /* Set margin inside pane. */ 2297 static void 2298 tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx) 2299 { 2300 tty_margin(tty, ctx->xoff - ctx->wox, 2301 ctx->xoff + ctx->sx - 1 - ctx->wox); 2302 } 2303 2304 /* Set margin at absolute position. */ 2305 static void 2306 tty_margin(struct tty *tty, u_int rleft, u_int rright) 2307 { 2308 if (!tty_use_margin(tty)) 2309 return; 2310 if (tty->rleft == rleft && tty->rright == rright) 2311 return; 2312 2313 tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower); 2314 2315 tty->rleft = rleft; 2316 tty->rright = rright; 2317 2318 if (rleft == 0 && rright == tty->sx - 1) 2319 tty_putcode(tty, TTYC_CLMG); 2320 else 2321 tty_putcode2(tty, TTYC_CMG, rleft, rright); 2322 tty->cx = tty->cy = UINT_MAX; 2323 } 2324 2325 /* 2326 * Move the cursor, unless it would wrap itself when the next character is 2327 * printed. 2328 */ 2329 static void 2330 tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx, 2331 u_int cx, u_int cy) 2332 { 2333 if (!ctx->wrapped || 2334 !tty_full_width(tty, ctx) || 2335 (tty->term->flags & TERM_NOAM) || 2336 ctx->xoff + cx != 0 || 2337 ctx->yoff + cy != tty->cy + 1 || 2338 tty->cx < tty->sx || 2339 tty->cy == tty->rlower) 2340 tty_cursor_pane(tty, ctx, cx, cy); 2341 else 2342 log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy); 2343 } 2344 2345 /* Move cursor inside pane. */ 2346 static void 2347 tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy) 2348 { 2349 tty_cursor(tty, ctx->xoff + cx - ctx->wox, ctx->yoff + cy - ctx->woy); 2350 } 2351 2352 /* Move cursor to absolute position. */ 2353 void 2354 tty_cursor(struct tty *tty, u_int cx, u_int cy) 2355 { 2356 struct tty_term *term = tty->term; 2357 u_int thisx, thisy; 2358 int change; 2359 2360 if (tty->flags & TTY_BLOCK) 2361 return; 2362 2363 thisx = tty->cx; 2364 thisy = tty->cy; 2365 2366 /* 2367 * If in the automargin space, and want to be there, do not move. 2368 * Otherwise, force the cursor to be in range (and complain). 2369 */ 2370 if (cx == thisx && cy == thisy && cx == tty->sx) 2371 return; 2372 if (cx > tty->sx - 1) { 2373 log_debug("%s: x too big %u > %u", __func__, cx, tty->sx - 1); 2374 cx = tty->sx - 1; 2375 } 2376 2377 /* No change. */ 2378 if (cx == thisx && cy == thisy) 2379 return; 2380 2381 /* Currently at the very end of the line - use absolute movement. */ 2382 if (thisx > tty->sx - 1) 2383 goto absolute; 2384 2385 /* Move to home position (0, 0). */ 2386 if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) { 2387 tty_putcode(tty, TTYC_HOME); 2388 goto out; 2389 } 2390 2391 /* Zero on the next line. */ 2392 if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower && 2393 (!tty_use_margin(tty) || tty->rleft == 0)) { 2394 tty_putc(tty, '\r'); 2395 tty_putc(tty, '\n'); 2396 goto out; 2397 } 2398 2399 /* Moving column or row. */ 2400 if (cy == thisy) { 2401 /* 2402 * Moving column only, row staying the same. 2403 */ 2404 2405 /* To left edge. */ 2406 if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) { 2407 tty_putc(tty, '\r'); 2408 goto out; 2409 } 2410 2411 /* One to the left. */ 2412 if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) { 2413 tty_putcode(tty, TTYC_CUB1); 2414 goto out; 2415 } 2416 2417 /* One to the right. */ 2418 if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) { 2419 tty_putcode(tty, TTYC_CUF1); 2420 goto out; 2421 } 2422 2423 /* Calculate difference. */ 2424 change = thisx - cx; /* +ve left, -ve right */ 2425 2426 /* 2427 * Use HPA if change is larger than absolute, otherwise move 2428 * the cursor with CUB/CUF. 2429 */ 2430 if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) { 2431 tty_putcode1(tty, TTYC_HPA, cx); 2432 goto out; 2433 } else if (change > 0 && 2434 tty_term_has(term, TTYC_CUB) && 2435 !tty_use_margin(tty)) { 2436 if (change == 2 && tty_term_has(term, TTYC_CUB1)) { 2437 tty_putcode(tty, TTYC_CUB1); 2438 tty_putcode(tty, TTYC_CUB1); 2439 goto out; 2440 } 2441 tty_putcode1(tty, TTYC_CUB, change); 2442 goto out; 2443 } else if (change < 0 && 2444 tty_term_has(term, TTYC_CUF) && 2445 !tty_use_margin(tty)) { 2446 tty_putcode1(tty, TTYC_CUF, -change); 2447 goto out; 2448 } 2449 } else if (cx == thisx) { 2450 /* 2451 * Moving row only, column staying the same. 2452 */ 2453 2454 /* One above. */ 2455 if (thisy != tty->rupper && 2456 cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) { 2457 tty_putcode(tty, TTYC_CUU1); 2458 goto out; 2459 } 2460 2461 /* One below. */ 2462 if (thisy != tty->rlower && 2463 cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) { 2464 tty_putcode(tty, TTYC_CUD1); 2465 goto out; 2466 } 2467 2468 /* Calculate difference. */ 2469 change = thisy - cy; /* +ve up, -ve down */ 2470 2471 /* 2472 * Try to use VPA if change is larger than absolute or if this 2473 * change would cross the scroll region, otherwise use CUU/CUD. 2474 */ 2475 if ((u_int) abs(change) > cy || 2476 (change < 0 && cy - change > tty->rlower) || 2477 (change > 0 && cy - change < tty->rupper)) { 2478 if (tty_term_has(term, TTYC_VPA)) { 2479 tty_putcode1(tty, TTYC_VPA, cy); 2480 goto out; 2481 } 2482 } else if (change > 0 && tty_term_has(term, TTYC_CUU)) { 2483 tty_putcode1(tty, TTYC_CUU, change); 2484 goto out; 2485 } else if (change < 0 && tty_term_has(term, TTYC_CUD)) { 2486 tty_putcode1(tty, TTYC_CUD, -change); 2487 goto out; 2488 } 2489 } 2490 2491 absolute: 2492 /* Absolute movement. */ 2493 tty_putcode2(tty, TTYC_CUP, cy, cx); 2494 2495 out: 2496 tty->cx = cx; 2497 tty->cy = cy; 2498 } 2499 2500 static void 2501 tty_hyperlink(struct tty *tty, const struct grid_cell *gc, 2502 struct hyperlinks *hl) 2503 { 2504 const char *uri, *id; 2505 2506 if (gc->link == tty->cell.link) 2507 return; 2508 tty->cell.link = gc->link; 2509 2510 if (hl == NULL) 2511 return; 2512 2513 if (gc->link == 0 || !hyperlinks_get(hl, gc->link, &uri, NULL, &id)) 2514 tty_putcode_ptr2(tty, TTYC_HLS, "", ""); 2515 else 2516 tty_putcode_ptr2(tty, TTYC_HLS, id, uri); 2517 } 2518 2519 void 2520 tty_attributes(struct tty *tty, const struct grid_cell *gc, 2521 const struct grid_cell *defaults, struct colour_palette *palette, 2522 struct hyperlinks *hl) 2523 { 2524 struct grid_cell *tc = &tty->cell, gc2; 2525 int changed; 2526 2527 /* Copy cell and update default colours. */ 2528 memcpy(&gc2, gc, sizeof gc2); 2529 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2530 if (gc2.fg == 8) 2531 gc2.fg = defaults->fg; 2532 if (gc2.bg == 8) 2533 gc2.bg = defaults->bg; 2534 } 2535 2536 /* Ignore cell if it is the same as the last one. */ 2537 if (gc2.attr == tty->last_cell.attr && 2538 gc2.fg == tty->last_cell.fg && 2539 gc2.bg == tty->last_cell.bg && 2540 gc2.us == tty->last_cell.us && 2541 gc2.link == tty->last_cell.link) 2542 return; 2543 2544 /* 2545 * If no setab, try to use the reverse attribute as a best-effort for a 2546 * non-default background. This is a bit of a hack but it doesn't do 2547 * any serious harm and makes a couple of applications happier. 2548 */ 2549 if (!tty_term_has(tty->term, TTYC_SETAB)) { 2550 if (gc2.attr & GRID_ATTR_REVERSE) { 2551 if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg)) 2552 gc2.attr &= ~GRID_ATTR_REVERSE; 2553 } else { 2554 if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg)) 2555 gc2.attr |= GRID_ATTR_REVERSE; 2556 } 2557 } 2558 2559 /* Fix up the colours if necessary. */ 2560 tty_check_fg(tty, palette, &gc2); 2561 tty_check_bg(tty, palette, &gc2); 2562 tty_check_us(tty, palette, &gc2); 2563 2564 /* 2565 * If any bits are being cleared or the underline colour is now default, 2566 * reset everything. 2567 */ 2568 if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0)) 2569 tty_reset(tty); 2570 2571 /* 2572 * Set the colours. This may call tty_reset() (so it comes next) and 2573 * may add to (NOT remove) the desired attributes. 2574 */ 2575 tty_colours(tty, &gc2); 2576 2577 /* Filter out attribute bits already set. */ 2578 changed = gc2.attr & ~tc->attr; 2579 tc->attr = gc2.attr; 2580 2581 /* Set the attributes. */ 2582 if (changed & GRID_ATTR_BRIGHT) 2583 tty_putcode(tty, TTYC_BOLD); 2584 if (changed & GRID_ATTR_DIM) 2585 tty_putcode(tty, TTYC_DIM); 2586 if (changed & GRID_ATTR_ITALICS) 2587 tty_set_italics(tty); 2588 if (changed & GRID_ATTR_ALL_UNDERSCORE) { 2589 if ((changed & GRID_ATTR_UNDERSCORE) || 2590 !tty_term_has(tty->term, TTYC_SMULX)) 2591 tty_putcode(tty, TTYC_SMUL); 2592 else if (changed & GRID_ATTR_UNDERSCORE_2) 2593 tty_putcode1(tty, TTYC_SMULX, 2); 2594 else if (changed & GRID_ATTR_UNDERSCORE_3) 2595 tty_putcode1(tty, TTYC_SMULX, 3); 2596 else if (changed & GRID_ATTR_UNDERSCORE_4) 2597 tty_putcode1(tty, TTYC_SMULX, 4); 2598 else if (changed & GRID_ATTR_UNDERSCORE_5) 2599 tty_putcode1(tty, TTYC_SMULX, 5); 2600 } 2601 if (changed & GRID_ATTR_BLINK) 2602 tty_putcode(tty, TTYC_BLINK); 2603 if (changed & GRID_ATTR_REVERSE) { 2604 if (tty_term_has(tty->term, TTYC_REV)) 2605 tty_putcode(tty, TTYC_REV); 2606 else if (tty_term_has(tty->term, TTYC_SMSO)) 2607 tty_putcode(tty, TTYC_SMSO); 2608 } 2609 if (changed & GRID_ATTR_HIDDEN) 2610 tty_putcode(tty, TTYC_INVIS); 2611 if (changed & GRID_ATTR_STRIKETHROUGH) 2612 tty_putcode(tty, TTYC_SMXX); 2613 if (changed & GRID_ATTR_OVERLINE) 2614 tty_putcode(tty, TTYC_SMOL); 2615 if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty)) 2616 tty_putcode(tty, TTYC_SMACS); 2617 2618 /* Set hyperlink if any. */ 2619 tty_hyperlink(tty, gc, hl); 2620 2621 memcpy(&tty->last_cell, &gc2, sizeof tty->last_cell); 2622 } 2623 2624 static void 2625 tty_colours(struct tty *tty, const struct grid_cell *gc) 2626 { 2627 struct grid_cell *tc = &tty->cell; 2628 int have_ax; 2629 2630 /* No changes? Nothing is necessary. */ 2631 if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us) 2632 return; 2633 2634 /* 2635 * Is either the default colour? This is handled specially because the 2636 * best solution might be to reset both colours to default, in which 2637 * case if only one is default need to fall onward to set the other 2638 * colour. 2639 */ 2640 if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) { 2641 /* 2642 * If don't have AX but do have op, send sgr0 (op can't 2643 * actually be used because it is sometimes the same as sgr0 2644 * and sometimes isn't). This resets both colours to default. 2645 * 2646 * Otherwise, try to set the default colour only as needed. 2647 */ 2648 have_ax = tty_term_flag(tty->term, TTYC_AX); 2649 if (!have_ax && tty_term_has(tty->term, TTYC_OP)) 2650 tty_reset(tty); 2651 else { 2652 if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) { 2653 if (have_ax) 2654 tty_puts(tty, "\033[39m"); 2655 else if (tc->fg != 7) 2656 tty_putcode1(tty, TTYC_SETAF, 7); 2657 tc->fg = gc->fg; 2658 } 2659 if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) { 2660 if (have_ax) 2661 tty_puts(tty, "\033[49m"); 2662 else if (tc->bg != 0) 2663 tty_putcode1(tty, TTYC_SETAB, 0); 2664 tc->bg = gc->bg; 2665 } 2666 } 2667 } 2668 2669 /* Set the foreground colour. */ 2670 if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg) 2671 tty_colours_fg(tty, gc); 2672 2673 /* 2674 * Set the background colour. This must come after the foreground as 2675 * tty_colour_fg() can call tty_reset(). 2676 */ 2677 if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg) 2678 tty_colours_bg(tty, gc); 2679 2680 /* Set the underscore colour. */ 2681 if (gc->us != tc->us) 2682 tty_colours_us(tty, gc); 2683 } 2684 2685 static void 2686 tty_check_fg(struct tty *tty, struct colour_palette *palette, 2687 struct grid_cell *gc) 2688 { 2689 u_char r, g, b; 2690 u_int colours; 2691 int c; 2692 2693 /* 2694 * Perform substitution if this pane has a palette. If the bright 2695 * attribute is set and Nobr is not present, use the bright entry in 2696 * the palette by changing to the aixterm colour 2697 */ 2698 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2699 c = gc->fg; 2700 if (c < 8 && 2701 gc->attr & GRID_ATTR_BRIGHT && 2702 !tty_term_has(tty->term, TTYC_NOBR)) 2703 c += 90; 2704 if ((c = colour_palette_get(palette, c)) != -1) 2705 gc->fg = c; 2706 } 2707 2708 /* Is this a 24-bit colour? */ 2709 if (gc->fg & COLOUR_FLAG_RGB) { 2710 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2711 if (tty->term->flags & TERM_RGBCOLOURS) 2712 return; 2713 colour_split_rgb(gc->fg, &r, &g, &b); 2714 gc->fg = colour_find_rgb(r, g, b); 2715 } 2716 2717 /* How many colours does this terminal have? */ 2718 if (tty->term->flags & TERM_256COLOURS) 2719 colours = 256; 2720 else 2721 colours = tty_term_number(tty->term, TTYC_COLORS); 2722 2723 /* Is this a 256-colour colour? */ 2724 if (gc->fg & COLOUR_FLAG_256) { 2725 /* And not a 256 colour mode? */ 2726 if (colours < 256) { 2727 gc->fg = colour_256to16(gc->fg); 2728 if (gc->fg & 8) { 2729 gc->fg &= 7; 2730 if (colours >= 16) 2731 gc->fg += 90; 2732 } 2733 } 2734 return; 2735 } 2736 2737 /* Is this an aixterm colour? */ 2738 if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) { 2739 gc->fg -= 90; 2740 gc->attr |= GRID_ATTR_BRIGHT; 2741 } 2742 } 2743 2744 static void 2745 tty_check_bg(struct tty *tty, struct colour_palette *palette, 2746 struct grid_cell *gc) 2747 { 2748 u_char r, g, b; 2749 u_int colours; 2750 int c; 2751 2752 /* Perform substitution if this pane has a palette. */ 2753 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2754 if ((c = colour_palette_get(palette, gc->bg)) != -1) 2755 gc->bg = c; 2756 } 2757 2758 /* Is this a 24-bit colour? */ 2759 if (gc->bg & COLOUR_FLAG_RGB) { 2760 /* Not a 24-bit terminal? Translate to 256-colour palette. */ 2761 if (tty->term->flags & TERM_RGBCOLOURS) 2762 return; 2763 colour_split_rgb(gc->bg, &r, &g, &b); 2764 gc->bg = colour_find_rgb(r, g, b); 2765 } 2766 2767 /* How many colours does this terminal have? */ 2768 if (tty->term->flags & TERM_256COLOURS) 2769 colours = 256; 2770 else 2771 colours = tty_term_number(tty->term, TTYC_COLORS); 2772 2773 /* Is this a 256-colour colour? */ 2774 if (gc->bg & COLOUR_FLAG_256) { 2775 /* 2776 * And not a 256 colour mode? Translate to 16-colour 2777 * palette. Bold background doesn't exist portably, so just 2778 * discard the bold bit if set. 2779 */ 2780 if (colours < 256) { 2781 gc->bg = colour_256to16(gc->bg); 2782 if (gc->bg & 8) { 2783 gc->bg &= 7; 2784 if (colours >= 16) 2785 gc->bg += 90; 2786 } 2787 } 2788 return; 2789 } 2790 2791 /* Is this an aixterm colour? */ 2792 if (gc->bg >= 90 && gc->bg <= 97 && colours < 16) 2793 gc->bg -= 90; 2794 } 2795 2796 static void 2797 tty_check_us(__unused struct tty *tty, struct colour_palette *palette, 2798 struct grid_cell *gc) 2799 { 2800 int c; 2801 2802 /* Perform substitution if this pane has a palette. */ 2803 if (~gc->flags & GRID_FLAG_NOPALETTE) { 2804 if ((c = colour_palette_get(palette, gc->us)) != -1) 2805 gc->us = c; 2806 } 2807 2808 /* Underscore colour is set as RGB so convert a 256 colour to RGB. */ 2809 if (gc->us & COLOUR_FLAG_256) 2810 gc->us = colour_256toRGB (gc->us); 2811 } 2812 2813 static void 2814 tty_colours_fg(struct tty *tty, const struct grid_cell *gc) 2815 { 2816 struct grid_cell *tc = &tty->cell; 2817 char s[32]; 2818 2819 /* Is this a 24-bit or 256-colour colour? */ 2820 if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) { 2821 if (tty_try_colour(tty, gc->fg, "38") == 0) 2822 goto save; 2823 /* Should not get here, already converted in tty_check_fg. */ 2824 return; 2825 } 2826 2827 /* Is this an aixterm bright colour? */ 2828 if (gc->fg >= 90 && gc->fg <= 97) { 2829 if (tty->term->flags & TERM_256COLOURS) { 2830 xsnprintf(s, sizeof s, "\033[%dm", gc->fg); 2831 tty_puts(tty, s); 2832 } else 2833 tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8); 2834 goto save; 2835 } 2836 2837 /* Otherwise set the foreground colour. */ 2838 tty_putcode1(tty, TTYC_SETAF, gc->fg); 2839 2840 save: 2841 /* Save the new values in the terminal current cell. */ 2842 tc->fg = gc->fg; 2843 } 2844 2845 static void 2846 tty_colours_bg(struct tty *tty, const struct grid_cell *gc) 2847 { 2848 struct grid_cell *tc = &tty->cell; 2849 char s[32]; 2850 2851 /* Is this a 24-bit or 256-colour colour? */ 2852 if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) { 2853 if (tty_try_colour(tty, gc->bg, "48") == 0) 2854 goto save; 2855 /* Should not get here, already converted in tty_check_bg. */ 2856 return; 2857 } 2858 2859 /* Is this an aixterm bright colour? */ 2860 if (gc->bg >= 90 && gc->bg <= 97) { 2861 if (tty->term->flags & TERM_256COLOURS) { 2862 xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10); 2863 tty_puts(tty, s); 2864 } else 2865 tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8); 2866 goto save; 2867 } 2868 2869 /* Otherwise set the background colour. */ 2870 tty_putcode1(tty, TTYC_SETAB, gc->bg); 2871 2872 save: 2873 /* Save the new values in the terminal current cell. */ 2874 tc->bg = gc->bg; 2875 } 2876 2877 static void 2878 tty_colours_us(struct tty *tty, const struct grid_cell *gc) 2879 { 2880 struct grid_cell *tc = &tty->cell; 2881 u_int c; 2882 u_char r, g, b; 2883 2884 /* Clear underline colour. */ 2885 if (gc->us == 0) { 2886 tty_putcode(tty, TTYC_OL); 2887 goto save; 2888 } 2889 2890 /* Must be an RGB colour - this should never happen. */ 2891 if (~gc->us & COLOUR_FLAG_RGB) 2892 return; 2893 2894 /* 2895 * Setulc and setal follows the ncurses(3) one argument "direct colour" 2896 * capability format. Calculate the colour value. 2897 */ 2898 colour_split_rgb(gc->us, &r, &g, &b); 2899 c = (65536 * r) + (256 * g) + b; 2900 2901 /* 2902 * Write the colour. Only use setal if the RGB flag is set because the 2903 * non-RGB version may be wrong. 2904 */ 2905 if (tty_term_has(tty->term, TTYC_SETULC)) 2906 tty_putcode1(tty, TTYC_SETULC, c); 2907 else if (tty_term_has(tty->term, TTYC_SETAL) && 2908 tty_term_has(tty->term, TTYC_RGB)) 2909 tty_putcode1(tty, TTYC_SETAL, c); 2910 2911 save: 2912 /* Save the new values in the terminal current cell. */ 2913 tc->us = gc->us; 2914 } 2915 2916 static int 2917 tty_try_colour(struct tty *tty, int colour, const char *type) 2918 { 2919 u_char r, g, b; 2920 2921 if (colour & COLOUR_FLAG_256) { 2922 if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF)) 2923 tty_putcode1(tty, TTYC_SETAF, colour & 0xff); 2924 else if (tty_term_has(tty->term, TTYC_SETAB)) 2925 tty_putcode1(tty, TTYC_SETAB, colour & 0xff); 2926 return (0); 2927 } 2928 2929 if (colour & COLOUR_FLAG_RGB) { 2930 colour_split_rgb(colour & 0xffffff, &r, &g, &b); 2931 if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF)) 2932 tty_putcode3(tty, TTYC_SETRGBF, r, g, b); 2933 else if (tty_term_has(tty->term, TTYC_SETRGBB)) 2934 tty_putcode3(tty, TTYC_SETRGBB, r, g, b); 2935 return (0); 2936 } 2937 2938 return (-1); 2939 } 2940 2941 static void 2942 tty_window_default_style(struct grid_cell *gc, struct window_pane *wp) 2943 { 2944 memcpy(gc, &grid_default_cell, sizeof *gc); 2945 gc->fg = wp->palette.fg; 2946 gc->bg = wp->palette.bg; 2947 } 2948 2949 void 2950 tty_default_colours(struct grid_cell *gc, struct window_pane *wp) 2951 { 2952 struct options *oo = wp->options; 2953 struct format_tree *ft; 2954 2955 memcpy(gc, &grid_default_cell, sizeof *gc); 2956 2957 if (wp->flags & PANE_STYLECHANGED) { 2958 log_debug("%%%u: style changed", wp->id); 2959 wp->flags &= ~PANE_STYLECHANGED; 2960 2961 ft = format_create(NULL, NULL, FORMAT_PANE|wp->id, 2962 FORMAT_NOJOBS); 2963 format_defaults(ft, NULL, NULL, NULL, wp); 2964 tty_window_default_style(&wp->cached_active_gc, wp); 2965 style_add(&wp->cached_active_gc, oo, "window-active-style", ft); 2966 tty_window_default_style(&wp->cached_gc, wp); 2967 style_add(&wp->cached_gc, oo, "window-style", ft); 2968 format_free(ft); 2969 } 2970 2971 if (gc->fg == 8) { 2972 if (wp == wp->window->active && wp->cached_active_gc.fg != 8) 2973 gc->fg = wp->cached_active_gc.fg; 2974 else 2975 gc->fg = wp->cached_gc.fg; 2976 } 2977 2978 if (gc->bg == 8) { 2979 if (wp == wp->window->active && wp->cached_active_gc.bg != 8) 2980 gc->bg = wp->cached_active_gc.bg; 2981 else 2982 gc->bg = wp->cached_gc.bg; 2983 } 2984 } 2985 2986 static void 2987 tty_default_attributes(struct tty *tty, const struct grid_cell *defaults, 2988 struct colour_palette *palette, u_int bg, struct hyperlinks *hl) 2989 { 2990 struct grid_cell gc; 2991 2992 memcpy(&gc, &grid_default_cell, sizeof gc); 2993 gc.bg = bg; 2994 tty_attributes(tty, &gc, defaults, palette, hl); 2995 } 2996 2997 static void 2998 tty_clipboard_query_callback(__unused int fd, __unused short events, void *data) 2999 { 3000 struct tty *tty = data; 3001 struct client *c = tty->client; 3002 3003 c->flags &= ~CLIENT_CLIPBOARDBUFFER; 3004 free(c->clipboard_panes); 3005 c->clipboard_panes = NULL; 3006 c->clipboard_npanes = 0; 3007 3008 tty->flags &= ~TTY_OSC52QUERY; 3009 } 3010 3011 void 3012 tty_clipboard_query(struct tty *tty) 3013 { 3014 struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT }; 3015 3016 if ((~tty->flags & TTY_STARTED) || (tty->flags & TTY_OSC52QUERY)) 3017 return; 3018 tty_putcode_ptr2(tty, TTYC_MS, "", "?"); 3019 3020 tty->flags |= TTY_OSC52QUERY; 3021 evtimer_set(&tty->clipboard_timer, tty_clipboard_query_callback, tty); 3022 evtimer_add(&tty->clipboard_timer, &tv); 3023 } 3024