1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2009, 2013 The FreeBSD Foundation 5 * All rights reserved. 6 * 7 * This software was developed by Ed Schouten under sponsorship from the 8 * FreeBSD Foundation. 9 * 10 * Portions of this software were developed by Oleksandr Rybalko 11 * under sponsorship from the FreeBSD Foundation. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD$"); 37 38#include <sys/param.h> 39#include <sys/kernel.h> 40#include <sys/lock.h> 41#include <sys/malloc.h> 42#include <sys/mutex.h> 43#include <sys/reboot.h> 44#include <sys/systm.h> 45 46#include <dev/vt/vt.h> 47 48static MALLOC_DEFINE(M_VTBUF, "vtbuf", "vt buffer"); 49 50#define VTBUF_LOCK(vb) mtx_lock_spin(&(vb)->vb_lock) 51#define VTBUF_UNLOCK(vb) mtx_unlock_spin(&(vb)->vb_lock) 52 53#define POS_INDEX(c, r) (((r) << 12) + (c)) 54#define POS_COPY(d, s) do { \ 55 (d).tp_col = (s).tp_col; \ 56 (d).tp_row = (s).tp_row; \ 57} while (0) 58 59#ifndef SC_NO_CUTPASTE 60static int vtbuf_htw(const struct vt_buf *vb, int row); 61static int vtbuf_wth(const struct vt_buf *vb, int row); 62static int vtbuf_in_this_range(int begin, int test, int end, int sz); 63#endif 64 65/* 66 * line4 67 * line5 <--- curroffset (terminal output to that line) 68 * line0 69 * line1 <--- roffset (history display from that point) 70 * line2 71 * line3 72 */ 73int 74vthistory_seek(struct vt_buf *vb, int offset, int whence) 75{ 76 int diff, top, bottom, roffset; 77 78 /* No scrolling if not enabled. */ 79 if ((vb->vb_flags & VBF_SCROLL) == 0) { 80 if (vb->vb_roffset != vb->vb_curroffset) { 81 vb->vb_roffset = vb->vb_curroffset; 82 return (0xffff); 83 } 84 return (0); /* No changes */ 85 } 86 87 /* "top" may be a negative integer. */ 88 bottom = vb->vb_curroffset; 89 top = (vb->vb_flags & VBF_HISTORY_FULL) ? 90 bottom + vb->vb_scr_size.tp_row - vb->vb_history_size : 91 0; 92 93 roffset = 0; /* Make gcc happy. */ 94 switch (whence) { 95 case VHS_SET: 96 if (offset < 0) 97 offset = 0; 98 roffset = top + offset; 99 break; 100 case VHS_CUR: 101 /* 102 * Operate on copy of offset value, since it temporary 103 * can be bigger than amount of rows in buffer. 104 */ 105 roffset = vb->vb_roffset; 106 if (roffset >= bottom + vb->vb_scr_size.tp_row) 107 roffset -= vb->vb_history_size; 108 109 roffset += offset; 110 roffset = MAX(roffset, top); 111 roffset = MIN(roffset, bottom); 112 113 if (roffset < 0) 114 roffset = vb->vb_history_size + roffset; 115 116 break; 117 case VHS_END: 118 /* Go to current offset. */ 119 roffset = vb->vb_curroffset; 120 break; 121 } 122 123 diff = vb->vb_roffset != roffset; 124 vb->vb_roffset = roffset; 125 126 return (diff); 127} 128 129void 130vthistory_addlines(struct vt_buf *vb, int offset) 131{ 132#ifndef SC_NO_CUTPASTE 133 int cur, sz; 134#endif 135 136 vb->vb_curroffset += offset; 137 if (vb->vb_curroffset + vb->vb_scr_size.tp_row >= vb->vb_history_size) { 138 vb->vb_flags |= VBF_HISTORY_FULL; 139 vb->vb_curroffset %= vb->vb_history_size; 140 } 141 if ((vb->vb_flags & VBF_SCROLL) == 0) { 142 vb->vb_roffset = vb->vb_curroffset; 143 } 144 145#ifndef SC_NO_CUTPASTE 146 sz = vb->vb_history_size; 147 cur = vb->vb_roffset + vb->vb_scr_size.tp_row + sz - 1; 148 if (vtbuf_in_this_range(cur, vb->vb_mark_start.tp_row, cur + offset, sz) || 149 vtbuf_in_this_range(cur, vb->vb_mark_end.tp_row, cur + offset, sz)) { 150 /* clear screen selection */ 151 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row; 152 vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col; 153 } 154#endif 155} 156 157void 158vthistory_getpos(const struct vt_buf *vb, unsigned int *offset) 159{ 160 161 *offset = vb->vb_roffset; 162} 163 164#ifndef SC_NO_CUTPASTE /* Only mouse support use it now. */ 165/* Translate history row to current view row number. */ 166static int 167vtbuf_htw(const struct vt_buf *vb, int row) 168{ 169 170 /* 171 * total 1000 rows. 172 * History offset roffset winrow 173 * 205 200 ((205 - 200 + 1000) % 1000) = 5 174 * 90 990 ((90 - 990 + 1000) % 1000) = 100 175 */ 176 return ((row - vb->vb_roffset + vb->vb_history_size) % 177 vb->vb_history_size); 178} 179 180/* Translate current view row number to history row. */ 181static int 182vtbuf_wth(const struct vt_buf *vb, int row) 183{ 184 185 return ((vb->vb_roffset + row) % vb->vb_history_size); 186} 187 188/* 189 * Test if an index in a circular buffer is within a range. 190 * 191 * begin - start index 192 * end - end index 193 * test - test index 194 * sz - size of circular buffer when it turns over 195 */ 196static int 197vtbuf_in_this_range(int begin, int test, int end, int sz) 198{ 199 200 begin %= sz; 201 end %= sz; 202 203 /* check for inversion */ 204 if (begin > end) 205 return (test >= begin || test < end); 206 else 207 return (test >= begin && test < end); 208} 209#endif 210 211int 212vtbuf_iscursor(const struct vt_buf *vb, int row, int col) 213{ 214#ifndef SC_NO_CUTPASTE 215 int sc, sr, sz, ec, er, tmp; 216#endif 217 218 if ((vb->vb_flags & (VBF_CURSOR|VBF_SCROLL)) == VBF_CURSOR && 219 (vb->vb_cursor.tp_row == row) && (vb->vb_cursor.tp_col == col)) 220 return (1); 221 222#ifndef SC_NO_CUTPASTE 223 /* Mark cut/paste region. */ 224 if (vb->vb_mark_start.tp_col == vb->vb_mark_end.tp_col && 225 vb->vb_mark_start.tp_row == vb->vb_mark_end.tp_row) 226 return (0); 227 228 sc = vb->vb_mark_start.tp_col; 229 sr = vb->vb_mark_start.tp_row; 230 ec = vb->vb_mark_end.tp_col; 231 er = vb->vb_mark_end.tp_row; 232 233 /* 234 * Information about if the selection was made bottom-top or 235 * top-bottom is lost due to modulo arithmetics and needs to 236 * be recovered: 237 */ 238 sz = vb->vb_history_size; 239 tmp = (sz + er - sr) % sz; 240 row = vtbuf_wth(vb, row); 241 242 /* Swap start and end if start > end */ 243 if ((2 * tmp) > sz || (tmp == 0 && sc > ec)) { 244 tmp = sc; sc = ec; ec = tmp; 245 tmp = sr; sr = er; er = tmp; 246 } 247 248 if (vtbuf_in_this_range(POS_INDEX(sc, sr), POS_INDEX(col, row), 249 POS_INDEX(ec, er), POS_INDEX(0, sz))) 250 return (1); 251#endif 252 253 return (0); 254} 255 256void 257vtbuf_lock(struct vt_buf *vb) 258{ 259 260 VTBUF_LOCK(vb); 261} 262 263void 264vtbuf_unlock(struct vt_buf *vb) 265{ 266 267 VTBUF_UNLOCK(vb); 268} 269 270void 271vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area) 272{ 273 274 if (vb->vb_dirtyrect.tr_begin.tp_row > area->tr_begin.tp_row) 275 vb->vb_dirtyrect.tr_begin.tp_row = area->tr_begin.tp_row; 276 if (vb->vb_dirtyrect.tr_begin.tp_col > area->tr_begin.tp_col) 277 vb->vb_dirtyrect.tr_begin.tp_col = area->tr_begin.tp_col; 278 if (vb->vb_dirtyrect.tr_end.tp_row < area->tr_end.tp_row) 279 vb->vb_dirtyrect.tr_end.tp_row = area->tr_end.tp_row; 280 if (vb->vb_dirtyrect.tr_end.tp_col < area->tr_end.tp_col) 281 vb->vb_dirtyrect.tr_end.tp_col = area->tr_end.tp_col; 282} 283 284static inline void 285vtbuf_dirty_cell(struct vt_buf *vb, const term_pos_t *p) 286{ 287 term_rect_t area; 288 289 area.tr_begin = *p; 290 area.tr_end.tp_row = p->tp_row + 1; 291 area.tr_end.tp_col = p->tp_col + 1; 292 vtbuf_dirty(vb, &area); 293} 294 295static void 296vtbuf_make_undirty(struct vt_buf *vb) 297{ 298 299 vb->vb_dirtyrect.tr_begin = vb->vb_scr_size; 300 vb->vb_dirtyrect.tr_end.tp_row = vb->vb_dirtyrect.tr_end.tp_col = 0; 301} 302 303void 304vtbuf_undirty(struct vt_buf *vb, term_rect_t *r) 305{ 306 307 *r = vb->vb_dirtyrect; 308 vtbuf_make_undirty(vb); 309} 310 311void 312vtbuf_copy(struct vt_buf *vb, const term_rect_t *r, const term_pos_t *p2) 313{ 314 const term_pos_t *p1 = &r->tr_begin; 315 term_rect_t area; 316 unsigned int rows, cols; 317 int pr, rdiff; 318 319 KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row, 320 ("vtbuf_copy begin.tp_row %d must be less than screen width %d", 321 r->tr_begin.tp_row, vb->vb_scr_size.tp_row)); 322 KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col, 323 ("vtbuf_copy begin.tp_col %d must be less than screen height %d", 324 r->tr_begin.tp_col, vb->vb_scr_size.tp_col)); 325 326 KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row, 327 ("vtbuf_copy end.tp_row %d must be less than screen width %d", 328 r->tr_end.tp_row, vb->vb_scr_size.tp_row)); 329 KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col, 330 ("vtbuf_copy end.tp_col %d must be less than screen height %d", 331 r->tr_end.tp_col, vb->vb_scr_size.tp_col)); 332 333 KASSERT(p2->tp_row < vb->vb_scr_size.tp_row, 334 ("vtbuf_copy tp_row %d must be less than screen width %d", 335 p2->tp_row, vb->vb_scr_size.tp_row)); 336 KASSERT(p2->tp_col < vb->vb_scr_size.tp_col, 337 ("vtbuf_copy tp_col %d must be less than screen height %d", 338 p2->tp_col, vb->vb_scr_size.tp_col)); 339 340 rows = r->tr_end.tp_row - r->tr_begin.tp_row; 341 rdiff = r->tr_begin.tp_row - p2->tp_row; 342 cols = r->tr_end.tp_col - r->tr_begin.tp_col; 343 if (r->tr_begin.tp_row > p2->tp_row && r->tr_begin.tp_col == 0 && 344 r->tr_end.tp_col == vb->vb_scr_size.tp_col && /* Full row. */ 345 (rows + rdiff) == vb->vb_scr_size.tp_row && /* Whole screen. */ 346 rdiff > 0) { /* Only forward direction. Do not eat history. */ 347 vthistory_addlines(vb, rdiff); 348 } else if (p2->tp_row < p1->tp_row) { 349 /* Handle overlapping copies of line segments. */ 350 /* Move data up. */ 351 for (pr = 0; pr < rows; pr++) 352 memmove( 353 &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col), 354 &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col), 355 cols * sizeof(term_char_t)); 356 } else { 357 /* Move data down. */ 358 for (pr = rows - 1; pr >= 0; pr--) 359 memmove( 360 &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col), 361 &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col), 362 cols * sizeof(term_char_t)); 363 } 364 365 area.tr_begin = *p2; 366 area.tr_end.tp_row = MIN(p2->tp_row + rows, vb->vb_scr_size.tp_row); 367 area.tr_end.tp_col = MIN(p2->tp_col + cols, vb->vb_scr_size.tp_col); 368 vtbuf_dirty(vb, &area); 369} 370 371static void 372vtbuf_do_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c) 373{ 374 unsigned int pr, pc; 375 term_char_t *row; 376 377 for (pr = r->tr_begin.tp_row; pr < r->tr_end.tp_row; pr++) { 378 row = vb->vb_rows[(vb->vb_curroffset + pr) % 379 VTBUF_MAX_HEIGHT(vb)]; 380 for (pc = r->tr_begin.tp_col; pc < r->tr_end.tp_col; pc++) { 381 row[pc] = c; 382 } 383 } 384} 385 386void 387vtbuf_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c) 388{ 389 390 KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row, 391 ("vtbuf_fill begin.tp_row %d must be < screen height %d", 392 r->tr_begin.tp_row, vb->vb_scr_size.tp_row)); 393 KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col, 394 ("vtbuf_fill begin.tp_col %d must be < screen width %d", 395 r->tr_begin.tp_col, vb->vb_scr_size.tp_col)); 396 397 KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row, 398 ("vtbuf_fill end.tp_row %d must be <= screen height %d", 399 r->tr_end.tp_row, vb->vb_scr_size.tp_row)); 400 KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col, 401 ("vtbuf_fill end.tp_col %d must be <= screen width %d", 402 r->tr_end.tp_col, vb->vb_scr_size.tp_col)); 403 404 vtbuf_do_fill(vb, r, c); 405 vtbuf_dirty(vb, r); 406} 407 408static void 409vtbuf_init_rows(struct vt_buf *vb) 410{ 411 int r; 412 413 vb->vb_history_size = MAX(vb->vb_history_size, vb->vb_scr_size.tp_row); 414 415 for (r = 0; r < vb->vb_history_size; r++) 416 vb->vb_rows[r] = &vb->vb_buffer[r * vb->vb_scr_size.tp_col]; 417} 418 419void 420vtbuf_init_early(struct vt_buf *vb) 421{ 422 term_rect_t rect; 423 424 vb->vb_flags |= VBF_CURSOR; 425 vb->vb_roffset = 0; 426 vb->vb_curroffset = 0; 427 vb->vb_mark_start.tp_row = 0; 428 vb->vb_mark_start.tp_col = 0; 429 vb->vb_mark_end.tp_row = 0; 430 vb->vb_mark_end.tp_col = 0; 431 432 vtbuf_init_rows(vb); 433 rect.tr_begin.tp_row = rect.tr_begin.tp_col = 0; 434 rect.tr_end.tp_col = vb->vb_scr_size.tp_col; 435 rect.tr_end.tp_row = vb->vb_history_size; 436 vtbuf_do_fill(vb, &rect, VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR)); 437 vtbuf_make_undirty(vb); 438 if ((vb->vb_flags & VBF_MTX_INIT) == 0) { 439 mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN); 440 vb->vb_flags |= VBF_MTX_INIT; 441 } 442} 443 444void 445vtbuf_init(struct vt_buf *vb, const term_pos_t *p) 446{ 447 int sz; 448 449 vb->vb_scr_size = *p; 450 vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE; 451 452 if ((vb->vb_flags & VBF_STATIC) == 0) { 453 sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t); 454 vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 455 456 sz = vb->vb_history_size * sizeof(term_char_t *); 457 vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 458 } 459 460 vtbuf_init_early(vb); 461} 462 463void 464vtbuf_sethistory_size(struct vt_buf *vb, unsigned int size) 465{ 466 term_pos_t p; 467 468 /* With same size */ 469 p.tp_row = vb->vb_scr_size.tp_row; 470 p.tp_col = vb->vb_scr_size.tp_col; 471 vtbuf_grow(vb, &p, size); 472} 473 474void 475vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, unsigned int history_size) 476{ 477 term_char_t *old, *new, **rows, **oldrows, **copyrows, *row, *oldrow; 478 unsigned int w, h, c, r, old_history_size; 479 size_t bufsize, rowssize; 480 int history_full; 481 482 history_size = MAX(history_size, p->tp_row); 483 484 /* Allocate new buffer. */ 485 bufsize = history_size * p->tp_col * sizeof(term_char_t); 486 new = malloc(bufsize, M_VTBUF, M_WAITOK | M_ZERO); 487 rowssize = history_size * sizeof(term_pos_t *); 488 rows = malloc(rowssize, M_VTBUF, M_WAITOK | M_ZERO); 489 490 /* Toggle it. */ 491 VTBUF_LOCK(vb); 492 old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer; 493 oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows; 494 copyrows = vb->vb_rows; 495 496 w = vb->vb_scr_size.tp_col; 497 h = vb->vb_scr_size.tp_row; 498 old_history_size = vb->vb_history_size; 499 history_full = vb->vb_flags & VBF_HISTORY_FULL || 500 vb->vb_curroffset + h >= history_size; 501 502 vb->vb_history_size = history_size; 503 vb->vb_buffer = new; 504 vb->vb_rows = rows; 505 vb->vb_flags &= ~VBF_STATIC; 506 vb->vb_scr_size = *p; 507 vtbuf_init_rows(vb); 508 509 /* 510 * Copy rows to the new buffer. The first row in the history 511 * is back to index 0, ie. the new buffer doesn't cycle. 512 */ 513 if (history_size > old_history_size) { 514 for (r = 0; r < old_history_size; r ++) { 515 row = rows[r]; 516 517 /* Compute the corresponding row in the old buffer. */ 518 if (history_full) 519 /* 520 * The buffer is full, the "top" row is 521 * the one just after the viewable area 522 * (curroffset + viewable height) in the 523 * cycling buffer. The corresponding row 524 * is computed from this top row. 525 */ 526 oldrow = copyrows[ 527 (vb->vb_curroffset + h + r) % 528 old_history_size]; 529 else 530 /* 531 * The buffer is not full, therefore, 532 * we didn't cycle already. The 533 * corresponding rows are the same in 534 * both buffers. 535 */ 536 oldrow = copyrows[r]; 537 538 memmove(row, oldrow, 539 MIN(p->tp_col, w) * sizeof(term_char_t)); 540 541 /* 542 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will 543 * extended lines of kernel text using the wrong 544 * background color. 545 */ 546 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 547 row[c] = VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR); 548 } 549 } 550 551 /* Fill remaining rows. */ 552 for (r = old_history_size; r < history_size; r++) { 553 row = rows[r]; 554 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 555 row[c] = VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR); 556 } 557 } 558 559 vb->vb_flags &= ~VBF_HISTORY_FULL; 560 561 /* 562 * If the screen is already filled (there are non-visible lines 563 * above the current viewable area), adjust curroffset to the 564 * new viewable area. 565 * 566 * If the old buffer was full, set curroffset to the 567 * <h>th most recent line of history in the new, non-cycled 568 * buffer. Otherwise, it didn't cycle, so the old curroffset 569 * is the same in the new buffer. 570 */ 571 if (history_full) 572 vb->vb_curroffset = old_history_size - h; 573 } else { 574 /* 575 * (old_history_size - history_size) lines of history are 576 * dropped. 577 */ 578 for (r = 0; r < history_size; r ++) { 579 row = rows[r]; 580 581 /* 582 * Compute the corresponding row in the old buffer. 583 * 584 * See the equivalent if{} block above for an 585 * explanation. 586 */ 587 if (history_full) 588 oldrow = copyrows[ 589 (vb->vb_curroffset + h + r + 590 (old_history_size - history_size)) % 591 old_history_size]; 592 else 593 oldrow = copyrows[r]; 594 595 memmove(row, oldrow, 596 MIN(p->tp_col, w) * sizeof(term_char_t)); 597 598 /* 599 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will 600 * extended lines of kernel text using the wrong 601 * background color. 602 */ 603 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 604 row[c] = VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR); 605 } 606 } 607 608 if (history_full) { 609 vb->vb_curroffset = history_size - h; 610 vb->vb_flags |= VBF_HISTORY_FULL; 611 } 612 } 613 614 vb->vb_roffset = vb->vb_curroffset; 615 616 /* Adjust cursor position. */ 617 if (vb->vb_cursor.tp_col > p->tp_col - 1) 618 /* 619 * Move cursor to the last column, in case its previous 620 * position is outside of the new screen area. 621 */ 622 vb->vb_cursor.tp_col = p->tp_col - 1; 623 624 if (vb->vb_curroffset > 0 || vb->vb_cursor.tp_row > p->tp_row - 1) 625 /* Move cursor to the last line on the screen. */ 626 vb->vb_cursor.tp_row = p->tp_row - 1; 627 628 VTBUF_UNLOCK(vb); 629 630 /* Deallocate old buffer. */ 631 free(old, M_VTBUF); 632 free(oldrows, M_VTBUF); 633} 634 635void 636vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c) 637{ 638 term_char_t *row; 639 640 KASSERT(p->tp_row < vb->vb_scr_size.tp_row, 641 ("vtbuf_putchar tp_row %d must be less than screen width %d", 642 p->tp_row, vb->vb_scr_size.tp_row)); 643 KASSERT(p->tp_col < vb->vb_scr_size.tp_col, 644 ("vtbuf_putchar tp_col %d must be less than screen height %d", 645 p->tp_col, vb->vb_scr_size.tp_col)); 646 647 row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) % 648 VTBUF_MAX_HEIGHT(vb)]; 649 if (row[p->tp_col] != c) { 650 row[p->tp_col] = c; 651 vtbuf_dirty_cell(vb, p); 652 } 653} 654 655void 656vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p) 657{ 658 if (vb->vb_flags & VBF_CURSOR) { 659 vtbuf_dirty_cell(vb, &vb->vb_cursor); 660 vb->vb_cursor = *p; 661 vtbuf_dirty_cell(vb, &vb->vb_cursor); 662 } else { 663 vb->vb_cursor = *p; 664 } 665} 666 667#ifndef SC_NO_CUTPASTE 668static void 669vtbuf_flush_mark(struct vt_buf *vb) 670{ 671 term_rect_t area; 672 int s, e; 673 674 /* Notify renderer to update marked region. */ 675 if ((vb->vb_mark_start.tp_col != vb->vb_mark_end.tp_col) || 676 (vb->vb_mark_start.tp_row != vb->vb_mark_end.tp_row)) { 677 678 s = vtbuf_htw(vb, vb->vb_mark_start.tp_row); 679 e = vtbuf_htw(vb, vb->vb_mark_end.tp_row); 680 681 area.tr_begin.tp_col = 0; 682 area.tr_begin.tp_row = MIN(s, e); 683 684 area.tr_end.tp_col = vb->vb_scr_size.tp_col; 685 area.tr_end.tp_row = MAX(s, e) + 1; 686 687 VTBUF_LOCK(vb); 688 vtbuf_dirty(vb, &area); 689 VTBUF_UNLOCK(vb); 690 } 691} 692 693int 694vtbuf_get_marked_len(struct vt_buf *vb) 695{ 696 int ei, si, sz; 697 term_pos_t s, e; 698 699 /* Swap according to window coordinates. */ 700 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 701 vb->vb_mark_start.tp_col) > 702 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 703 vb->vb_mark_end.tp_col)) { 704 POS_COPY(e, vb->vb_mark_start); 705 POS_COPY(s, vb->vb_mark_end); 706 } else { 707 POS_COPY(s, vb->vb_mark_start); 708 POS_COPY(e, vb->vb_mark_end); 709 } 710 711 si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col; 712 ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col; 713 714 /* Number symbols and number of rows to inject \n */ 715 sz = ei - si + ((e.tp_row - s.tp_row) * 2); 716 717 return (sz * sizeof(term_char_t)); 718} 719 720void 721vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz) 722{ 723 int i, r, c, cs, ce; 724 term_pos_t s, e; 725 726 /* Swap according to window coordinates. */ 727 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 728 vb->vb_mark_start.tp_col) > 729 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 730 vb->vb_mark_end.tp_col)) { 731 POS_COPY(e, vb->vb_mark_start); 732 POS_COPY(s, vb->vb_mark_end); 733 } else { 734 POS_COPY(s, vb->vb_mark_start); 735 POS_COPY(e, vb->vb_mark_end); 736 } 737 738 i = 0; 739 for (r = s.tp_row; r <= e.tp_row; r ++) { 740 cs = (r == s.tp_row)?s.tp_col:0; 741 ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col; 742 for (c = cs; c < ce; c ++) { 743 buf[i++] = vb->vb_rows[r][c]; 744 } 745 /* Add new line for all rows, but not for last one. */ 746 if (r != e.tp_row) { 747 buf[i++] = '\r'; 748 buf[i++] = '\n'; 749 } 750 } 751} 752 753int 754vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row) 755{ 756 term_char_t *r; 757 int i; 758 759 switch (type) { 760 case VTB_MARK_END: /* B1 UP */ 761 if (vb->vb_mark_last != VTB_MARK_MOVE) 762 return (0); 763 /* FALLTHROUGH */ 764 case VTB_MARK_MOVE: 765 case VTB_MARK_EXTEND: 766 vtbuf_flush_mark(vb); /* Clean old mark. */ 767 vb->vb_mark_end.tp_col = col; 768 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 769 break; 770 case VTB_MARK_START: 771 vtbuf_flush_mark(vb); /* Clean old mark. */ 772 vb->vb_mark_start.tp_col = col; 773 vb->vb_mark_start.tp_row = vtbuf_wth(vb, row); 774 /* Start again, so clear end point. */ 775 vb->vb_mark_end.tp_col = col; 776 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 777 break; 778 case VTB_MARK_WORD: 779 vtbuf_flush_mark(vb); /* Clean old mark. */ 780 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 781 vtbuf_wth(vb, row); 782 r = vb->vb_rows[vb->vb_mark_start.tp_row]; 783 for (i = col; i >= 0; i --) { 784 if (TCHAR_CHARACTER(r[i]) == ' ') { 785 vb->vb_mark_start.tp_col = i + 1; 786 break; 787 } 788 } 789 for (i = col; i < vb->vb_scr_size.tp_col; i ++) { 790 if (TCHAR_CHARACTER(r[i]) == ' ') { 791 vb->vb_mark_end.tp_col = i; 792 break; 793 } 794 } 795 if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col) 796 vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col; 797 break; 798 case VTB_MARK_ROW: 799 vtbuf_flush_mark(vb); /* Clean old mark. */ 800 vb->vb_mark_start.tp_col = 0; 801 vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col; 802 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 803 vtbuf_wth(vb, row); 804 break; 805 case VTB_MARK_NONE: 806 vb->vb_mark_last = type; 807 /* FALLTHROUGH */ 808 default: 809 /* panic? */ 810 return (0); 811 } 812 813 vb->vb_mark_last = type; 814 /* Draw new marked region. */ 815 vtbuf_flush_mark(vb); 816 return (1); 817} 818#endif 819 820void 821vtbuf_cursor_visibility(struct vt_buf *vb, int yes) 822{ 823 int oflags, nflags; 824 825 oflags = vb->vb_flags; 826 if (yes) 827 vb->vb_flags |= VBF_CURSOR; 828 else 829 vb->vb_flags &= ~VBF_CURSOR; 830 nflags = vb->vb_flags; 831 832 if (oflags != nflags) 833 vtbuf_dirty_cell(vb, &vb->vb_cursor); 834} 835 836void 837vtbuf_scroll_mode(struct vt_buf *vb, int yes) 838{ 839 int oflags, nflags; 840 841 VTBUF_LOCK(vb); 842 oflags = vb->vb_flags; 843 if (yes) 844 vb->vb_flags |= VBF_SCROLL; 845 else 846 vb->vb_flags &= ~VBF_SCROLL; 847 nflags = vb->vb_flags; 848 849 if (oflags != nflags) 850 vtbuf_dirty_cell(vb, &vb->vb_cursor); 851 VTBUF_UNLOCK(vb); 852} 853