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