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 48 static 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 60 static int vtbuf_htw(const struct vt_buf *vb, int row); 61 static int vtbuf_wth(const struct vt_buf *vb, int row); 62 static 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 */ 73 int 74 vthistory_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 } 128 129 void 130 vthistory_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 } 156 157 void 158 vthistory_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. */ 166 static int 167 vtbuf_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. */ 181 static int 182 vtbuf_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 */ 196 static int 197 vtbuf_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 210 211 int 212 vtbuf_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 } 255 256 void 257 vtbuf_lock(struct vt_buf *vb) 258 { 259 260 VTBUF_LOCK(vb); 261 } 262 263 void 264 vtbuf_unlock(struct vt_buf *vb) 265 { 266 267 VTBUF_UNLOCK(vb); 268 } 269 270 void 271 vtbuf_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 } 283 284 static inline void 285 vtbuf_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 } 294 295 static void 296 vtbuf_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 } 302 303 void 304 vtbuf_undirty(struct vt_buf *vb, term_rect_t *r) 305 { 306 307 *r = vb->vb_dirtyrect; 308 vtbuf_make_undirty(vb); 309 } 310 311 void 312 vtbuf_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 } 370 371 static void 372 vtbuf_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 } 385 386 void 387 vtbuf_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 } 407 408 static void 409 vtbuf_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 } 418 419 static void 420 vtbuf_do_clearhistory(struct vt_buf *vb) 421 { 422 term_rect_t rect; 423 const teken_attr_t *a; 424 term_char_t ch; 425 426 a = teken_get_curattr(&vb->vb_terminal->tm_emulator); 427 ch = TCOLOR_FG(a->ta_fgcolor) | TCOLOR_BG(a->ta_bgcolor); 428 429 rect.tr_begin.tp_row = rect.tr_begin.tp_col = 0; 430 rect.tr_end.tp_col = vb->vb_scr_size.tp_col; 431 rect.tr_end.tp_row = vb->vb_history_size; 432 433 vtbuf_do_fill(vb, &rect, VTBUF_SPACE_CHAR(ch)); 434 } 435 436 void 437 vtbuf_init_early(struct vt_buf *vb) 438 { 439 vb->vb_flags |= VBF_CURSOR; 440 vb->vb_roffset = 0; 441 vb->vb_curroffset = 0; 442 vb->vb_mark_start.tp_row = 0; 443 vb->vb_mark_start.tp_col = 0; 444 vb->vb_mark_end.tp_row = 0; 445 vb->vb_mark_end.tp_col = 0; 446 447 vtbuf_init_rows(vb); 448 vtbuf_do_clearhistory(vb); 449 vtbuf_make_undirty(vb); 450 if ((vb->vb_flags & VBF_MTX_INIT) == 0) { 451 mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN); 452 vb->vb_flags |= VBF_MTX_INIT; 453 } 454 } 455 456 void 457 vtbuf_init(struct vt_buf *vb, const term_pos_t *p) 458 { 459 int sz; 460 461 vb->vb_scr_size = *p; 462 vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE; 463 464 if ((vb->vb_flags & VBF_STATIC) == 0) { 465 sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t); 466 vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 467 468 sz = vb->vb_history_size * sizeof(term_char_t *); 469 vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 470 } 471 472 vtbuf_init_early(vb); 473 } 474 475 void 476 vtbuf_clearhistory(struct vt_buf *vb) 477 { 478 VTBUF_LOCK(vb); 479 vtbuf_do_clearhistory(vb); 480 VTBUF_UNLOCK(vb); 481 } 482 483 void 484 vtbuf_sethistory_size(struct vt_buf *vb, unsigned int size) 485 { 486 term_pos_t p; 487 488 /* With same size */ 489 p.tp_row = vb->vb_scr_size.tp_row; 490 p.tp_col = vb->vb_scr_size.tp_col; 491 vtbuf_grow(vb, &p, size); 492 } 493 494 void 495 vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, unsigned int history_size) 496 { 497 term_char_t *old, *new, **rows, **oldrows, **copyrows, *row, *oldrow; 498 unsigned int w, h, c, r, old_history_size; 499 size_t bufsize, rowssize; 500 int history_full; 501 const teken_attr_t *a; 502 term_char_t ch; 503 504 a = teken_get_curattr(&vb->vb_terminal->tm_emulator); 505 ch = TCOLOR_FG(a->ta_fgcolor) | TCOLOR_BG(a->ta_bgcolor); 506 507 history_size = MAX(history_size, p->tp_row); 508 509 /* Allocate new buffer. */ 510 bufsize = history_size * p->tp_col * sizeof(term_char_t); 511 new = malloc(bufsize, M_VTBUF, M_WAITOK | M_ZERO); 512 rowssize = history_size * sizeof(term_pos_t *); 513 rows = malloc(rowssize, M_VTBUF, M_WAITOK | M_ZERO); 514 515 /* Toggle it. */ 516 VTBUF_LOCK(vb); 517 old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer; 518 oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows; 519 copyrows = vb->vb_rows; 520 521 w = vb->vb_scr_size.tp_col; 522 h = vb->vb_scr_size.tp_row; 523 old_history_size = vb->vb_history_size; 524 history_full = vb->vb_flags & VBF_HISTORY_FULL || 525 vb->vb_curroffset + h >= history_size; 526 527 vb->vb_history_size = history_size; 528 vb->vb_buffer = new; 529 vb->vb_rows = rows; 530 vb->vb_flags &= ~VBF_STATIC; 531 vb->vb_scr_size = *p; 532 vtbuf_init_rows(vb); 533 534 /* 535 * Copy rows to the new buffer. The first row in the history 536 * is back to index 0, ie. the new buffer doesn't cycle. 537 */ 538 if (history_size > old_history_size) { 539 for (r = 0; r < old_history_size; r ++) { 540 row = rows[r]; 541 542 /* Compute the corresponding row in the old buffer. */ 543 if (history_full) 544 /* 545 * The buffer is full, the "top" row is 546 * the one just after the viewable area 547 * (curroffset + viewable height) in the 548 * cycling buffer. The corresponding row 549 * is computed from this top row. 550 */ 551 oldrow = copyrows[ 552 (vb->vb_curroffset + h + r) % 553 old_history_size]; 554 else 555 /* 556 * The buffer is not full, therefore, 557 * we didn't cycle already. The 558 * corresponding rows are the same in 559 * both buffers. 560 */ 561 oldrow = copyrows[r]; 562 563 memmove(row, oldrow, 564 MIN(p->tp_col, w) * sizeof(term_char_t)); 565 566 /* 567 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will 568 * extended lines of kernel text using the wrong 569 * background color. 570 */ 571 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 572 row[c] = VTBUF_SPACE_CHAR(ch); 573 } 574 } 575 576 /* Fill remaining rows. */ 577 for (r = old_history_size; r < history_size; r++) { 578 row = rows[r]; 579 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 580 row[c] = VTBUF_SPACE_CHAR(ch); 581 } 582 } 583 584 vb->vb_flags &= ~VBF_HISTORY_FULL; 585 586 /* 587 * If the screen is already filled (there are non-visible lines 588 * above the current viewable area), adjust curroffset to the 589 * new viewable area. 590 * 591 * If the old buffer was full, set curroffset to the 592 * <h>th most recent line of history in the new, non-cycled 593 * buffer. Otherwise, it didn't cycle, so the old curroffset 594 * is the same in the new buffer. 595 */ 596 if (history_full) 597 vb->vb_curroffset = old_history_size - h; 598 } else { 599 /* 600 * (old_history_size - history_size) lines of history are 601 * dropped. 602 */ 603 for (r = 0; r < history_size; r ++) { 604 row = rows[r]; 605 606 /* 607 * Compute the corresponding row in the old buffer. 608 * 609 * See the equivalent if{} block above for an 610 * explanation. 611 */ 612 if (history_full) 613 oldrow = copyrows[ 614 (vb->vb_curroffset + h + r + 615 (old_history_size - history_size)) % 616 old_history_size]; 617 else 618 oldrow = copyrows[r]; 619 620 memmove(row, oldrow, 621 MIN(p->tp_col, w) * sizeof(term_char_t)); 622 623 /* 624 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will 625 * extended lines of kernel text using the wrong 626 * background color. 627 */ 628 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) { 629 row[c] = VTBUF_SPACE_CHAR(ch); 630 } 631 } 632 633 if (history_full) { 634 vb->vb_curroffset = history_size - h; 635 vb->vb_flags |= VBF_HISTORY_FULL; 636 } 637 } 638 639 vb->vb_roffset = vb->vb_curroffset; 640 641 /* Adjust cursor position. */ 642 if (vb->vb_cursor.tp_col > p->tp_col - 1) 643 /* 644 * Move cursor to the last column, in case its previous 645 * position is outside of the new screen area. 646 */ 647 vb->vb_cursor.tp_col = p->tp_col - 1; 648 649 if (vb->vb_curroffset > 0 || vb->vb_cursor.tp_row > p->tp_row - 1) 650 /* Move cursor to the last line on the screen. */ 651 vb->vb_cursor.tp_row = p->tp_row - 1; 652 653 VTBUF_UNLOCK(vb); 654 655 /* Deallocate old buffer. */ 656 free(old, M_VTBUF); 657 free(oldrows, M_VTBUF); 658 } 659 660 void 661 vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c) 662 { 663 term_char_t *row; 664 665 KASSERT(p->tp_row < vb->vb_scr_size.tp_row, 666 ("vtbuf_putchar tp_row %d must be less than screen width %d", 667 p->tp_row, vb->vb_scr_size.tp_row)); 668 KASSERT(p->tp_col < vb->vb_scr_size.tp_col, 669 ("vtbuf_putchar tp_col %d must be less than screen height %d", 670 p->tp_col, vb->vb_scr_size.tp_col)); 671 672 row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) % 673 VTBUF_MAX_HEIGHT(vb)]; 674 if (row[p->tp_col] != c) { 675 row[p->tp_col] = c; 676 vtbuf_dirty_cell(vb, p); 677 } 678 } 679 680 void 681 vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p) 682 { 683 if (vb->vb_flags & VBF_CURSOR) { 684 vtbuf_dirty_cell(vb, &vb->vb_cursor); 685 vb->vb_cursor = *p; 686 vtbuf_dirty_cell(vb, &vb->vb_cursor); 687 } else { 688 vb->vb_cursor = *p; 689 } 690 } 691 692 #ifndef SC_NO_CUTPASTE 693 static void 694 vtbuf_flush_mark(struct vt_buf *vb) 695 { 696 term_rect_t area; 697 int s, e; 698 699 /* Notify renderer to update marked region. */ 700 if ((vb->vb_mark_start.tp_col != vb->vb_mark_end.tp_col) || 701 (vb->vb_mark_start.tp_row != vb->vb_mark_end.tp_row)) { 702 703 s = vtbuf_htw(vb, vb->vb_mark_start.tp_row); 704 e = vtbuf_htw(vb, vb->vb_mark_end.tp_row); 705 706 area.tr_begin.tp_col = 0; 707 area.tr_begin.tp_row = MIN(s, e); 708 709 area.tr_end.tp_col = vb->vb_scr_size.tp_col; 710 area.tr_end.tp_row = MAX(s, e) + 1; 711 712 VTBUF_LOCK(vb); 713 vtbuf_dirty(vb, &area); 714 VTBUF_UNLOCK(vb); 715 } 716 } 717 718 int 719 vtbuf_get_marked_len(struct vt_buf *vb) 720 { 721 int ei, si, sz; 722 term_pos_t s, e; 723 724 /* Swap according to window coordinates. */ 725 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 726 vb->vb_mark_start.tp_col) > 727 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 728 vb->vb_mark_end.tp_col)) { 729 POS_COPY(e, vb->vb_mark_start); 730 POS_COPY(s, vb->vb_mark_end); 731 } else { 732 POS_COPY(s, vb->vb_mark_start); 733 POS_COPY(e, vb->vb_mark_end); 734 } 735 736 si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col; 737 ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col; 738 739 /* Number symbols and number of rows to inject \n */ 740 sz = ei - si + ((e.tp_row - s.tp_row) * 2); 741 742 return (sz * sizeof(term_char_t)); 743 } 744 745 void 746 vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz) 747 { 748 int i, r, c, cs, ce; 749 term_pos_t s, e; 750 751 /* Swap according to window coordinates. */ 752 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 753 vb->vb_mark_start.tp_col) > 754 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 755 vb->vb_mark_end.tp_col)) { 756 POS_COPY(e, vb->vb_mark_start); 757 POS_COPY(s, vb->vb_mark_end); 758 } else { 759 POS_COPY(s, vb->vb_mark_start); 760 POS_COPY(e, vb->vb_mark_end); 761 } 762 763 i = 0; 764 for (r = s.tp_row; r <= e.tp_row; r ++) { 765 cs = (r == s.tp_row)?s.tp_col:0; 766 ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col; 767 for (c = cs; c < ce; c ++) { 768 buf[i++] = vb->vb_rows[r][c]; 769 } 770 /* Add new line for all rows, but not for last one. */ 771 if (r != e.tp_row) { 772 buf[i++] = '\r'; 773 buf[i++] = '\n'; 774 } 775 } 776 } 777 778 int 779 vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row) 780 { 781 term_char_t *r; 782 int i; 783 784 switch (type) { 785 case VTB_MARK_END: /* B1 UP */ 786 if (vb->vb_mark_last != VTB_MARK_MOVE) 787 return (0); 788 /* FALLTHROUGH */ 789 case VTB_MARK_MOVE: 790 case VTB_MARK_EXTEND: 791 vtbuf_flush_mark(vb); /* Clean old mark. */ 792 vb->vb_mark_end.tp_col = col; 793 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 794 break; 795 case VTB_MARK_START: 796 vtbuf_flush_mark(vb); /* Clean old mark. */ 797 vb->vb_mark_start.tp_col = col; 798 vb->vb_mark_start.tp_row = vtbuf_wth(vb, row); 799 /* Start again, so clear end point. */ 800 vb->vb_mark_end.tp_col = col; 801 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 802 break; 803 case VTB_MARK_WORD: 804 vtbuf_flush_mark(vb); /* Clean old mark. */ 805 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 806 vtbuf_wth(vb, row); 807 r = vb->vb_rows[vb->vb_mark_start.tp_row]; 808 for (i = col; i >= 0; i --) { 809 if (TCHAR_CHARACTER(r[i]) == ' ') { 810 vb->vb_mark_start.tp_col = i + 1; 811 break; 812 } 813 } 814 for (i = col; i < vb->vb_scr_size.tp_col; i ++) { 815 if (TCHAR_CHARACTER(r[i]) == ' ') { 816 vb->vb_mark_end.tp_col = i; 817 break; 818 } 819 } 820 if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col) 821 vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col; 822 break; 823 case VTB_MARK_ROW: 824 vtbuf_flush_mark(vb); /* Clean old mark. */ 825 vb->vb_mark_start.tp_col = 0; 826 vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col; 827 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 828 vtbuf_wth(vb, row); 829 break; 830 case VTB_MARK_NONE: 831 vb->vb_mark_last = type; 832 /* FALLTHROUGH */ 833 default: 834 /* panic? */ 835 return (0); 836 } 837 838 vb->vb_mark_last = type; 839 /* Draw new marked region. */ 840 vtbuf_flush_mark(vb); 841 return (1); 842 } 843 #endif 844 845 void 846 vtbuf_cursor_visibility(struct vt_buf *vb, int yes) 847 { 848 int oflags, nflags; 849 850 oflags = vb->vb_flags; 851 if (yes) 852 vb->vb_flags |= VBF_CURSOR; 853 else 854 vb->vb_flags &= ~VBF_CURSOR; 855 nflags = vb->vb_flags; 856 857 if (oflags != nflags) 858 vtbuf_dirty_cell(vb, &vb->vb_cursor); 859 } 860 861 void 862 vtbuf_scroll_mode(struct vt_buf *vb, int yes) 863 { 864 int oflags, nflags; 865 866 VTBUF_LOCK(vb); 867 oflags = vb->vb_flags; 868 if (yes) 869 vb->vb_flags |= VBF_SCROLL; 870 else 871 vb->vb_flags &= ~VBF_SCROLL; 872 nflags = vb->vb_flags; 873 874 if (oflags != nflags) 875 vtbuf_dirty_cell(vb, &vb->vb_cursor); 876 VTBUF_UNLOCK(vb); 877 } 878