1 /*- 2 * Copyright (c) 2009, 2013 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Ed Schouten under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Portions of this software were developed by Oleksandr Rybalko 9 * under sponsorship from the FreeBSD Foundation. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/kernel.h> 38 #include <sys/lock.h> 39 #include <sys/malloc.h> 40 #include <sys/mutex.h> 41 #include <sys/systm.h> 42 43 #include <dev/vt/vt.h> 44 45 static MALLOC_DEFINE(M_VTBUF, "vtbuf", "vt buffer"); 46 47 #define VTBUF_LOCK(vb) mtx_lock_spin(&(vb)->vb_lock) 48 #define VTBUF_UNLOCK(vb) mtx_unlock_spin(&(vb)->vb_lock) 49 50 #define POS_INDEX(c, r) (((r) << 12) + (c)) 51 #define POS_COPY(d, s) do { \ 52 (d).tp_col = (s).tp_col; \ 53 (d).tp_row = (s).tp_row; \ 54 } while (0) 55 56 57 /* 58 * line4 59 * line5 <--- curroffset (terminal output to that line) 60 * line0 61 * line1 <--- roffset (history display from that point) 62 * line2 63 * line3 64 */ 65 int 66 vthistory_seek(struct vt_buf *vb, int offset, int whence) 67 { 68 int diff, top, bottom, roffset; 69 70 /* No scrolling if not enabled. */ 71 if ((vb->vb_flags & VBF_SCROLL) == 0) { 72 if (vb->vb_roffset != vb->vb_curroffset) { 73 vb->vb_roffset = vb->vb_curroffset; 74 return (0xffff); 75 } 76 return (0); /* No changes */ 77 } 78 top = (vb->vb_flags & VBF_HISTORY_FULL)? 79 (vb->vb_curroffset + vb->vb_scr_size.tp_row):vb->vb_history_size; 80 bottom = vb->vb_curroffset + vb->vb_history_size; 81 82 /* 83 * Operate on copy of offset value, since it temporary can be bigger 84 * than amount of rows in buffer. 85 */ 86 roffset = vb->vb_roffset + vb->vb_history_size; 87 switch (whence) { 88 case VHS_SET: 89 roffset = offset + vb->vb_history_size; 90 break; 91 case VHS_CUR: 92 roffset += offset; 93 break; 94 case VHS_END: 95 /* Go to current offset. */ 96 roffset = vb->vb_curroffset + vb->vb_history_size; 97 break; 98 } 99 100 roffset = (roffset < top)?top:roffset; 101 roffset = (roffset > bottom)?bottom:roffset; 102 103 roffset %= vb->vb_history_size; 104 105 if (vb->vb_roffset != roffset) { 106 diff = vb->vb_roffset - roffset; 107 vb->vb_roffset = roffset; 108 /* 109 * Offset changed, please update Nth lines on sceen. 110 * +N - Nth lines at top; 111 * -N - Nth lines at bottom. 112 */ 113 return (diff); 114 } 115 return (0); /* No changes */ 116 } 117 118 void 119 vthistory_addlines(struct vt_buf *vb, int offset) 120 { 121 122 vb->vb_curroffset += offset; 123 if (vb->vb_curroffset < 0) 124 vb->vb_curroffset = 0; 125 vb->vb_curroffset %= vb->vb_history_size; 126 if ((vb->vb_flags & VBF_SCROLL) == 0) { 127 vb->vb_roffset = vb->vb_curroffset; 128 } 129 } 130 131 void 132 vthistory_getpos(const struct vt_buf *vb, unsigned int *offset) 133 { 134 135 *offset = vb->vb_roffset; 136 } 137 138 #ifndef SC_NO_CUTPASTE /* Only mouse support use it now. */ 139 /* Translate current view row number to history row. */ 140 static int 141 vtbuf_wth(struct vt_buf *vb, int row) 142 { 143 144 return ((vb->vb_roffset + row) % vb->vb_history_size); 145 } 146 #endif 147 148 /* Translate history row to current view row number. */ 149 static int 150 vtbuf_htw(struct vt_buf *vb, int row) 151 { 152 153 /* 154 * total 1000 rows. 155 * History offset roffset winrow 156 * 205 200 ((205 - 200 + 1000) % 1000) = 5 157 * 90 990 ((90 - 990 + 1000) % 1000) = 100 158 */ 159 return ((row - vb->vb_roffset + vb->vb_history_size) % 160 vb->vb_history_size); 161 } 162 163 int 164 vtbuf_iscursor(struct vt_buf *vb, int row, int col) 165 { 166 int sc, sr, ec, er, tmp; 167 168 if ((vb->vb_flags & (VBF_CURSOR|VBF_SCROLL)) == VBF_CURSOR && 169 (vb->vb_cursor.tp_row == row) && (vb->vb_cursor.tp_col == col)) 170 return (1); 171 172 /* Mark cut/paste region. */ 173 174 /* 175 * Luckily screen view is not like circular buffer, so we will 176 * calculate in screen coordinates. Translate first. 177 */ 178 sc = vb->vb_mark_start.tp_col; 179 sr = vtbuf_htw(vb, vb->vb_mark_start.tp_row); 180 ec = vb->vb_mark_end.tp_col; 181 er = vtbuf_htw(vb, vb->vb_mark_end.tp_row); 182 183 184 /* Swap start and end if start > end. */ 185 if (POS_INDEX(sc, sr) > POS_INDEX(ec, er)) { 186 tmp = sc; sc = ec; ec = tmp; 187 tmp = sr; sr = er; er = tmp; 188 } 189 190 if ((POS_INDEX(sc, sr) <= POS_INDEX(col, row)) && 191 (POS_INDEX(col, row) < POS_INDEX(ec, er))) 192 return (1); 193 194 return (0); 195 } 196 197 static inline uint64_t 198 vtbuf_dirty_axis(unsigned int begin, unsigned int end) 199 { 200 uint64_t left, right, mask; 201 202 /* 203 * Mark all bits between begin % 64 and end % 64 dirty. 204 * This code is functionally equivalent to: 205 * 206 * for (i = begin; i < end; i++) 207 * mask |= (uint64_t)1 << (i % 64); 208 */ 209 210 /* Obvious case. Mark everything dirty. */ 211 if (end - begin >= 64) 212 return (VBM_DIRTY); 213 214 /* 1....0; used bits on the left. */ 215 left = VBM_DIRTY << begin % 64; 216 /* 0....1; used bits on the right. */ 217 right = VBM_DIRTY >> -end % 64; 218 219 /* 220 * Only take the intersection. If the result of that is 0, it 221 * means that the selection crossed a 64 bit boundary along the 222 * way, which means we have to take the complement. 223 */ 224 mask = left & right; 225 if (mask == 0) 226 mask = left | right; 227 return (mask); 228 } 229 230 static inline void 231 vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area) 232 { 233 234 VTBUF_LOCK(vb); 235 if (vb->vb_dirtyrect.tr_begin.tp_row > area->tr_begin.tp_row) 236 vb->vb_dirtyrect.tr_begin.tp_row = area->tr_begin.tp_row; 237 if (vb->vb_dirtyrect.tr_begin.tp_col > area->tr_begin.tp_col) 238 vb->vb_dirtyrect.tr_begin.tp_col = area->tr_begin.tp_col; 239 if (vb->vb_dirtyrect.tr_end.tp_row < area->tr_end.tp_row) 240 vb->vb_dirtyrect.tr_end.tp_row = area->tr_end.tp_row; 241 if (vb->vb_dirtyrect.tr_end.tp_col < area->tr_end.tp_col) 242 vb->vb_dirtyrect.tr_end.tp_col = area->tr_end.tp_col; 243 vb->vb_dirtymask.vbm_row |= 244 vtbuf_dirty_axis(area->tr_begin.tp_row, area->tr_end.tp_row); 245 vb->vb_dirtymask.vbm_col |= 246 vtbuf_dirty_axis(area->tr_begin.tp_col, area->tr_end.tp_col); 247 VTBUF_UNLOCK(vb); 248 } 249 250 static inline void 251 vtbuf_dirty_cell(struct vt_buf *vb, const term_pos_t *p) 252 { 253 term_rect_t area; 254 255 area.tr_begin = *p; 256 area.tr_end.tp_row = p->tp_row + 1; 257 area.tr_end.tp_col = p->tp_col + 1; 258 vtbuf_dirty(vb, &area); 259 } 260 261 static void 262 vtbuf_make_undirty(struct vt_buf *vb) 263 { 264 265 vb->vb_dirtyrect.tr_begin = vb->vb_scr_size; 266 vb->vb_dirtyrect.tr_end.tp_row = vb->vb_dirtyrect.tr_end.tp_col = 0; 267 vb->vb_dirtymask.vbm_row = vb->vb_dirtymask.vbm_col = 0; 268 } 269 270 void 271 vtbuf_undirty(struct vt_buf *vb, term_rect_t *r, struct vt_bufmask *m) 272 { 273 274 VTBUF_LOCK(vb); 275 *r = vb->vb_dirtyrect; 276 *m = vb->vb_dirtymask; 277 vtbuf_make_undirty(vb); 278 VTBUF_UNLOCK(vb); 279 } 280 281 void 282 vtbuf_copy(struct vt_buf *vb, const term_rect_t *r, const term_pos_t *p2) 283 { 284 const term_pos_t *p1 = &r->tr_begin; 285 term_rect_t area; 286 unsigned int rows, cols; 287 int pr, rdiff; 288 289 KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row, 290 ("vtbuf_copy begin.tp_row %d must be less than screen width %d", 291 r->tr_begin.tp_row, vb->vb_scr_size.tp_row)); 292 KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col, 293 ("vtbuf_copy begin.tp_col %d must be less than screen height %d", 294 r->tr_begin.tp_col, vb->vb_scr_size.tp_col)); 295 296 KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row, 297 ("vtbuf_copy end.tp_row %d must be less than screen width %d", 298 r->tr_end.tp_row, vb->vb_scr_size.tp_row)); 299 KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col, 300 ("vtbuf_copy end.tp_col %d must be less than screen height %d", 301 r->tr_end.tp_col, vb->vb_scr_size.tp_col)); 302 303 KASSERT(p2->tp_row < vb->vb_scr_size.tp_row, 304 ("vtbuf_copy tp_row %d must be less than screen width %d", 305 p2->tp_row, vb->vb_scr_size.tp_row)); 306 KASSERT(p2->tp_col < vb->vb_scr_size.tp_col, 307 ("vtbuf_copy tp_col %d must be less than screen height %d", 308 p2->tp_col, vb->vb_scr_size.tp_col)); 309 310 rows = r->tr_end.tp_row - r->tr_begin.tp_row; 311 rdiff = r->tr_begin.tp_row - p2->tp_row; 312 cols = r->tr_end.tp_col - r->tr_begin.tp_col; 313 if (r->tr_begin.tp_row > p2->tp_row && r->tr_begin.tp_col == 0 && 314 r->tr_end.tp_col == vb->vb_scr_size.tp_col && /* Full row. */ 315 (rows + rdiff) == vb->vb_scr_size.tp_row && /* Whole screen. */ 316 rdiff > 0) { /* Only forward dirrection. Do not eat history. */ 317 vthistory_addlines(vb, rdiff); 318 } else if (p2->tp_row < p1->tp_row) { 319 /* Handle overlapping copies of line segments. */ 320 /* Move data up. */ 321 for (pr = 0; pr < rows; pr++) 322 memmove( 323 &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col), 324 &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col), 325 cols * sizeof(term_char_t)); 326 } else { 327 /* Move data down. */ 328 for (pr = rows - 1; pr >= 0; pr--) 329 memmove( 330 &VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col), 331 &VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col), 332 cols * sizeof(term_char_t)); 333 } 334 335 area.tr_begin = *p2; 336 area.tr_end.tp_row = MIN(p2->tp_row + rows, vb->vb_scr_size.tp_row); 337 area.tr_end.tp_col = MIN(p2->tp_col + cols, vb->vb_scr_size.tp_col); 338 vtbuf_dirty(vb, &area); 339 } 340 341 static void 342 vtbuf_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c) 343 { 344 unsigned int pr, pc; 345 term_char_t *row; 346 347 for (pr = r->tr_begin.tp_row; pr < r->tr_end.tp_row; pr++) { 348 row = vb->vb_rows[(vb->vb_curroffset + pr) % 349 VTBUF_MAX_HEIGHT(vb)]; 350 for (pc = r->tr_begin.tp_col; pc < r->tr_end.tp_col; pc++) { 351 row[pc] = c; 352 } 353 } 354 } 355 356 void 357 vtbuf_fill_locked(struct vt_buf *vb, const term_rect_t *r, term_char_t c) 358 { 359 KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row, 360 ("vtbuf_fill_locked begin.tp_row %d must be < screen width %d", 361 r->tr_begin.tp_row, vb->vb_scr_size.tp_row)); 362 KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col, 363 ("vtbuf_fill_locked begin.tp_col %d must be < screen height %d", 364 r->tr_begin.tp_col, vb->vb_scr_size.tp_col)); 365 366 KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row, 367 ("vtbuf_fill_locked end.tp_row %d must be <= screen width %d", 368 r->tr_end.tp_row, vb->vb_scr_size.tp_row)); 369 KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col, 370 ("vtbuf_fill_locked end.tp_col %d must be <= screen height %d", 371 r->tr_end.tp_col, vb->vb_scr_size.tp_col)); 372 373 VTBUF_LOCK(vb); 374 vtbuf_fill(vb, r, c); 375 VTBUF_UNLOCK(vb); 376 377 vtbuf_dirty(vb, r); 378 } 379 380 static void 381 vtbuf_init_rows(struct vt_buf *vb) 382 { 383 int r; 384 385 vb->vb_history_size = MAX(vb->vb_history_size, vb->vb_scr_size.tp_row); 386 387 for (r = 0; r < vb->vb_history_size; r++) 388 vb->vb_rows[r] = &vb->vb_buffer[r * 389 vb->vb_scr_size.tp_col]; 390 } 391 392 void 393 vtbuf_init_early(struct vt_buf *vb) 394 { 395 396 vb->vb_flags |= VBF_CURSOR; 397 vb->vb_roffset = 0; 398 vb->vb_curroffset = 0; 399 vb->vb_mark_start.tp_row = 0; 400 vb->vb_mark_start.tp_col = 0; 401 vb->vb_mark_end.tp_row = 0; 402 vb->vb_mark_end.tp_col = 0; 403 404 vtbuf_init_rows(vb); 405 vtbuf_make_undirty(vb); 406 if ((vb->vb_flags & VBF_MTX_INIT) == 0) { 407 mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN); 408 vb->vb_flags |= VBF_MTX_INIT; 409 } 410 } 411 412 void 413 vtbuf_init(struct vt_buf *vb, const term_pos_t *p) 414 { 415 int sz; 416 417 vb->vb_scr_size = *p; 418 vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE; 419 420 if ((vb->vb_flags & VBF_STATIC) == 0) { 421 sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t); 422 vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 423 424 sz = vb->vb_history_size * sizeof(term_char_t *); 425 vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO); 426 } 427 428 vtbuf_init_early(vb); 429 } 430 431 void 432 vtbuf_sethistory_size(struct vt_buf *vb, int size) 433 { 434 term_pos_t p; 435 436 /* With same size */ 437 p.tp_row = vb->vb_scr_size.tp_row; 438 p.tp_col = vb->vb_scr_size.tp_col; 439 vtbuf_grow(vb, &p, size); 440 } 441 442 void 443 vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, int history_size) 444 { 445 term_char_t *old, *new, **rows, **oldrows, **copyrows, *row; 446 int bufsize, rowssize, w, h, c, r; 447 term_rect_t rect; 448 449 history_size = MAX(history_size, p->tp_row); 450 451 if (history_size > vb->vb_history_size || p->tp_col > 452 vb->vb_scr_size.tp_col) { 453 /* Allocate new buffer. */ 454 bufsize = history_size * p->tp_col * sizeof(term_char_t); 455 new = malloc(bufsize, M_VTBUF, M_WAITOK | M_ZERO); 456 rowssize = history_size * sizeof(term_pos_t *); 457 rows = malloc(rowssize, M_VTBUF, M_WAITOK | M_ZERO); 458 459 /* Toggle it. */ 460 VTBUF_LOCK(vb); 461 old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer; 462 oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows; 463 copyrows = vb->vb_rows; 464 w = vb->vb_scr_size.tp_col; 465 h = vb->vb_history_size; 466 467 vb->vb_history_size = history_size; 468 vb->vb_buffer = new; 469 vb->vb_rows = rows; 470 vb->vb_flags &= ~VBF_STATIC; 471 vb->vb_scr_size = *p; 472 vtbuf_init_rows(vb); 473 474 /* Copy history and fill extra space. */ 475 for (r = 0; r < history_size; r ++) { 476 row = rows[r]; 477 if (r < h) { /* Copy. */ 478 memmove(rows[r], copyrows[r], 479 MIN(p->tp_col, w) * sizeof(term_char_t)); 480 for (c = MIN(p->tp_col, w); c < p->tp_col; 481 c++) { 482 row[c] = VTBUF_SPACE_CHAR; 483 } 484 } else { /* Just fill. */ 485 rect.tr_begin.tp_col = 0; 486 rect.tr_begin.tp_row = r; 487 rect.tr_end.tp_col = p->tp_col; 488 rect.tr_end.tp_row = p->tp_row; 489 vtbuf_fill(vb, &rect, VTBUF_SPACE_CHAR); 490 break; 491 } 492 } 493 vtbuf_make_undirty(vb); 494 VTBUF_UNLOCK(vb); 495 /* Deallocate old buffer. */ 496 free(old, M_VTBUF); 497 free(oldrows, M_VTBUF); 498 } 499 } 500 501 void 502 vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c) 503 { 504 term_char_t *row; 505 506 KASSERT(p->tp_row < vb->vb_scr_size.tp_row, 507 ("vtbuf_putchar tp_row %d must be less than screen width %d", 508 p->tp_row, vb->vb_scr_size.tp_row)); 509 KASSERT(p->tp_col < vb->vb_scr_size.tp_col, 510 ("vtbuf_putchar tp_col %d must be less than screen height %d", 511 p->tp_col, vb->vb_scr_size.tp_col)); 512 513 row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) % 514 VTBUF_MAX_HEIGHT(vb)]; 515 if (row[p->tp_col] != c) { 516 VTBUF_LOCK(vb); 517 row[p->tp_col] = c; 518 VTBUF_UNLOCK(vb); 519 vtbuf_dirty_cell(vb, p); 520 } 521 } 522 523 void 524 vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p) 525 { 526 527 if (vb->vb_flags & VBF_CURSOR) { 528 vtbuf_dirty_cell(vb, &vb->vb_cursor); 529 vb->vb_cursor = *p; 530 vtbuf_dirty_cell(vb, &vb->vb_cursor); 531 } else { 532 vb->vb_cursor = *p; 533 } 534 } 535 536 #ifndef SC_NO_CUTPASTE 537 void 538 vtbuf_mouse_cursor_position(struct vt_buf *vb, int col, int row) 539 { 540 term_rect_t area; 541 542 area.tr_begin.tp_row = MAX(row - 1, 0); 543 area.tr_begin.tp_col = MAX(col - 1, 0); 544 area.tr_end.tp_row = MIN(row + 2, vb->vb_scr_size.tp_row); 545 area.tr_end.tp_col = MIN(col + 2, vb->vb_scr_size.tp_col); 546 vtbuf_dirty(vb, &area); 547 } 548 549 static void 550 vtbuf_flush_mark(struct vt_buf *vb) 551 { 552 term_rect_t area; 553 int s, e; 554 555 /* Notify renderer to update marked region. */ 556 if (vb->vb_mark_start.tp_col || vb->vb_mark_end.tp_col || 557 vb->vb_mark_start.tp_row || vb->vb_mark_end.tp_row) { 558 559 s = vtbuf_htw(vb, vb->vb_mark_start.tp_row); 560 e = vtbuf_htw(vb, vb->vb_mark_end.tp_row); 561 562 area.tr_begin.tp_col = 0; 563 area.tr_begin.tp_row = MIN(s, e); 564 565 area.tr_end.tp_col = vb->vb_scr_size.tp_col; 566 area.tr_end.tp_row = MAX(s, e) + 1; 567 568 vtbuf_dirty(vb, &area); 569 } 570 } 571 572 int 573 vtbuf_get_marked_len(struct vt_buf *vb) 574 { 575 int ei, si, sz; 576 term_pos_t s, e; 577 578 /* Swap according to window coordinates. */ 579 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 580 vb->vb_mark_start.tp_col) > 581 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 582 vb->vb_mark_end.tp_col)) { 583 POS_COPY(e, vb->vb_mark_start); 584 POS_COPY(s, vb->vb_mark_end); 585 } else { 586 POS_COPY(s, vb->vb_mark_start); 587 POS_COPY(e, vb->vb_mark_end); 588 } 589 590 si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col; 591 ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col; 592 593 /* Number symbols and number of rows to inject \n */ 594 sz = ei - si + ((e.tp_row - s.tp_row) * 2) + 1; 595 596 return (sz * sizeof(term_char_t)); 597 } 598 599 void 600 vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz) 601 { 602 int i, r, c, cs, ce; 603 term_pos_t s, e; 604 605 /* Swap according to window coordinates. */ 606 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row), 607 vb->vb_mark_start.tp_col) > 608 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row), 609 vb->vb_mark_end.tp_col)) { 610 POS_COPY(e, vb->vb_mark_start); 611 POS_COPY(s, vb->vb_mark_end); 612 } else { 613 POS_COPY(s, vb->vb_mark_start); 614 POS_COPY(e, vb->vb_mark_end); 615 } 616 617 i = 0; 618 for (r = s.tp_row; r <= e.tp_row; r ++) { 619 cs = (r == s.tp_row)?s.tp_col:0; 620 ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col; 621 for (c = cs; c < ce; c ++) { 622 buf[i++] = vb->vb_rows[r][c]; 623 } 624 /* Add new line for all rows, but not for last one. */ 625 if (r != e.tp_row) { 626 buf[i++] = '\r'; 627 buf[i++] = '\n'; 628 } 629 } 630 } 631 632 int 633 vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row) 634 { 635 term_char_t *r; 636 int i; 637 638 switch (type) { 639 case VTB_MARK_END: /* B1 UP */ 640 if (vb->vb_mark_last != VTB_MARK_MOVE) 641 return (0); 642 /* FALLTHROUGH */ 643 case VTB_MARK_MOVE: 644 case VTB_MARK_EXTEND: 645 vtbuf_flush_mark(vb); /* Clean old mark. */ 646 vb->vb_mark_end.tp_col = col; 647 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 648 break; 649 case VTB_MARK_START: 650 vtbuf_flush_mark(vb); /* Clean old mark. */ 651 vb->vb_mark_start.tp_col = col; 652 vb->vb_mark_start.tp_row = vtbuf_wth(vb, row); 653 /* Start again, so clear end point. */ 654 vb->vb_mark_end.tp_col = col; 655 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row); 656 break; 657 case VTB_MARK_WORD: 658 vtbuf_flush_mark(vb); /* Clean old mark. */ 659 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 660 vtbuf_wth(vb, row); 661 r = vb->vb_rows[vb->vb_mark_start.tp_row]; 662 for (i = col; i >= 0; i --) { 663 if (TCHAR_CHARACTER(r[i]) == ' ') { 664 vb->vb_mark_start.tp_col = i + 1; 665 break; 666 } 667 } 668 for (i = col; i < vb->vb_scr_size.tp_col; i ++) { 669 if (TCHAR_CHARACTER(r[i]) == ' ') { 670 vb->vb_mark_end.tp_col = i; 671 break; 672 } 673 } 674 if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col) 675 vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col; 676 break; 677 case VTB_MARK_ROW: 678 vtbuf_flush_mark(vb); /* Clean old mark. */ 679 vb->vb_mark_start.tp_col = 0; 680 vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col; 681 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row = 682 vtbuf_wth(vb, row); 683 break; 684 case VTB_MARK_NONE: 685 vb->vb_mark_last = type; 686 /* FALLTHROUGH */ 687 default: 688 /* panic? */ 689 return (0); 690 } 691 692 vb->vb_mark_last = type; 693 /* Draw new marked region. */ 694 vtbuf_flush_mark(vb); 695 return (1); 696 } 697 #endif 698 699 void 700 vtbuf_cursor_visibility(struct vt_buf *vb, int yes) 701 { 702 int oflags, nflags; 703 704 VTBUF_LOCK(vb); 705 oflags = vb->vb_flags; 706 if (yes) 707 vb->vb_flags |= VBF_CURSOR; 708 else 709 vb->vb_flags &= ~VBF_CURSOR; 710 nflags = vb->vb_flags; 711 VTBUF_UNLOCK(vb); 712 713 if (oflags != nflags) 714 vtbuf_dirty_cell(vb, &vb->vb_cursor); 715 } 716 717 void 718 vtbuf_scroll_mode(struct vt_buf *vb, int yes) 719 { 720 int oflags, nflags; 721 722 VTBUF_LOCK(vb); 723 oflags = vb->vb_flags; 724 if (yes) 725 vb->vb_flags |= VBF_SCROLL; 726 else 727 vb->vb_flags &= ~VBF_SCROLL; 728 nflags = vb->vb_flags; 729 VTBUF_UNLOCK(vb); 730 731 if (oflags != nflags) 732 vtbuf_dirty_cell(vb, &vb->vb_cursor); 733 } 734 735