2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2009, 2013 The FreeBSD Foundation
7 * This software was developed by Ed Schouten under sponsorship from the
10 * Portions of this software were developed by Oleksandr Rybalko
11 * under sponsorship from the FreeBSD Foundation.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
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.
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
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/kernel.h>
41 #include <sys/malloc.h>
42 #include <sys/mutex.h>
43 #include <sys/reboot.h>
44 #include <sys/systm.h>
46 #include <dev/vt/vt.h>
48 static MALLOC_DEFINE(M_VTBUF, "vtbuf", "vt buffer");
50 #define VTBUF_LOCK(vb) mtx_lock_spin(&(vb)->vb_lock)
51 #define VTBUF_UNLOCK(vb) mtx_unlock_spin(&(vb)->vb_lock)
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; \
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);
67 * line5 <--- curroffset (terminal output to that line)
69 * line1 <--- roffset (history display from that point)
74 vthistory_seek(struct vt_buf *vb, int offset, int whence)
76 int diff, top, bottom, roffset;
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;
84 return (0); /* No changes */
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 :
93 roffset = 0; /* Make gcc happy. */
98 roffset = top + offset;
102 * Operate on copy of offset value, since it temporary
103 * can be bigger than amount of rows in buffer.
105 roffset = vb->vb_roffset;
106 if (roffset >= bottom + vb->vb_scr_size.tp_row)
107 roffset -= vb->vb_history_size;
110 roffset = MAX(roffset, top);
111 roffset = MIN(roffset, bottom);
114 roffset = vb->vb_history_size + roffset;
118 /* Go to current offset. */
119 roffset = vb->vb_curroffset;
123 diff = vb->vb_roffset != roffset;
124 vb->vb_roffset = roffset;
130 vthistory_addlines(struct vt_buf *vb, int offset)
132 #ifndef SC_NO_CUTPASTE
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;
141 if ((vb->vb_flags & VBF_SCROLL) == 0) {
142 vb->vb_roffset = vb->vb_curroffset;
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;
158 vthistory_getpos(const struct vt_buf *vb, unsigned int *offset)
161 *offset = vb->vb_roffset;
164 #ifndef SC_NO_CUTPASTE /* Only mouse support use it now. */
165 /* Translate history row to current view row number. */
167 vtbuf_htw(const struct vt_buf *vb, int row)
172 * History offset roffset winrow
173 * 205 200 ((205 - 200 + 1000) % 1000) = 5
174 * 90 990 ((90 - 990 + 1000) % 1000) = 100
176 return ((row - vb->vb_roffset + vb->vb_history_size) %
177 vb->vb_history_size);
180 /* Translate current view row number to history row. */
182 vtbuf_wth(const struct vt_buf *vb, int row)
185 return ((vb->vb_roffset + row) % vb->vb_history_size);
189 * Test if an index in a circular buffer is within a range.
191 * begin - start index
194 * sz - size of circular buffer when it turns over
197 vtbuf_in_this_range(int begin, int test, int end, int sz)
203 /* check for inversion */
205 return (test >= begin || test < end);
207 return (test >= begin && test < end);
212 vtbuf_iscursor(const struct vt_buf *vb, int row, int col)
214 #ifndef SC_NO_CUTPASTE
215 int sc, sr, sz, ec, er, tmp;
218 if ((vb->vb_flags & (VBF_CURSOR|VBF_SCROLL)) == VBF_CURSOR &&
219 (vb->vb_cursor.tp_row == row) && (vb->vb_cursor.tp_col == col))
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)
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;
234 * Information about if the selection was made bottom-top or
235 * top-bottom is lost due to modulo arithmetics and needs to
238 sz = vb->vb_history_size;
239 tmp = (sz + er - sr) % sz;
240 row = vtbuf_wth(vb, row);
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;
248 if (vtbuf_in_this_range(POS_INDEX(sc, sr), POS_INDEX(col, row),
249 POS_INDEX(ec, er), POS_INDEX(0, sz)))
257 vtbuf_lock(struct vt_buf *vb)
264 vtbuf_unlock(struct vt_buf *vb)
271 vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area)
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;
285 vtbuf_dirty_cell(struct vt_buf *vb, const term_pos_t *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);
296 vtbuf_make_undirty(struct vt_buf *vb)
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;
304 vtbuf_undirty(struct vt_buf *vb, term_rect_t *r)
307 *r = vb->vb_dirtyrect;
308 vtbuf_make_undirty(vb);
312 vtbuf_copy(struct vt_buf *vb, const term_rect_t *r, const term_pos_t *p2)
314 const term_pos_t *p1 = &r->tr_begin;
316 unsigned int rows, cols;
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));
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));
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));
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. */
351 for (pr = 0; pr < rows; pr++)
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));
357 /* Move data down. */
358 for (pr = rows - 1; pr >= 0; pr--)
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));
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);
372 vtbuf_do_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)
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++) {
387 vtbuf_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)
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));
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));
404 vtbuf_do_fill(vb, r, c);
409 vtbuf_init_rows(struct vt_buf *vb)
413 vb->vb_history_size = MAX(vb->vb_history_size, vb->vb_scr_size.tp_row);
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];
420 vtbuf_do_clearhistory(struct vt_buf *vb)
423 const teken_attr_t *a;
426 a = teken_get_curattr(&vb->vb_terminal->tm_emulator);
427 ch = TCOLOR_FG(a->ta_fgcolor) | TCOLOR_BG(a->ta_bgcolor);
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;
433 vtbuf_do_fill(vb, &rect, VTBUF_SPACE_CHAR(ch));
437 vtbuf_reset_scrollback(struct vt_buf *vb)
440 vb->vb_curroffset = 0;
441 vb->vb_mark_start.tp_row = 0;
442 vb->vb_mark_start.tp_col = 0;
443 vb->vb_mark_end.tp_row = 0;
444 vb->vb_mark_end.tp_col = 0;
448 vtbuf_init_early(struct vt_buf *vb)
450 vb->vb_flags |= VBF_CURSOR;
451 vtbuf_reset_scrollback(vb);
453 vtbuf_do_clearhistory(vb);
454 vtbuf_make_undirty(vb);
455 if ((vb->vb_flags & VBF_MTX_INIT) == 0) {
456 mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN);
457 vb->vb_flags |= VBF_MTX_INIT;
462 vtbuf_init(struct vt_buf *vb, const term_pos_t *p)
466 vb->vb_scr_size = *p;
467 vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE;
469 if ((vb->vb_flags & VBF_STATIC) == 0) {
470 sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t);
471 vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);
473 sz = vb->vb_history_size * sizeof(term_char_t *);
474 vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);
477 vtbuf_init_early(vb);
481 vtbuf_clearhistory(struct vt_buf *vb)
484 vtbuf_do_clearhistory(vb);
485 vtbuf_reset_scrollback(vb);
486 vb->vb_flags &= ~VBF_HISTORY_FULL;
491 vtbuf_sethistory_size(struct vt_buf *vb, unsigned int size)
496 p.tp_row = vb->vb_scr_size.tp_row;
497 p.tp_col = vb->vb_scr_size.tp_col;
498 vtbuf_grow(vb, &p, size);
502 vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, unsigned int history_size)
504 term_char_t *old, *new, **rows, **oldrows, **copyrows, *row, *oldrow;
505 unsigned int w, h, c, r, old_history_size;
506 size_t bufsize, rowssize;
508 const teken_attr_t *a;
511 a = teken_get_curattr(&vb->vb_terminal->tm_emulator);
512 ch = TCOLOR_FG(a->ta_fgcolor) | TCOLOR_BG(a->ta_bgcolor);
514 history_size = MAX(history_size, p->tp_row);
516 /* Allocate new buffer. */
517 bufsize = history_size * p->tp_col * sizeof(term_char_t);
518 new = malloc(bufsize, M_VTBUF, M_WAITOK | M_ZERO);
519 rowssize = history_size * sizeof(term_pos_t *);
520 rows = malloc(rowssize, M_VTBUF, M_WAITOK | M_ZERO);
524 old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer;
525 oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows;
526 copyrows = vb->vb_rows;
528 w = vb->vb_scr_size.tp_col;
529 h = vb->vb_scr_size.tp_row;
530 old_history_size = vb->vb_history_size;
531 history_full = vb->vb_flags & VBF_HISTORY_FULL ||
532 vb->vb_curroffset + h >= history_size;
534 vb->vb_history_size = history_size;
537 vb->vb_flags &= ~VBF_STATIC;
538 vb->vb_scr_size = *p;
542 * Copy rows to the new buffer. The first row in the history
543 * is back to index 0, ie. the new buffer doesn't cycle.
545 if (history_size > old_history_size) {
546 for (r = 0; r < old_history_size; r ++) {
549 /* Compute the corresponding row in the old buffer. */
552 * The buffer is full, the "top" row is
553 * the one just after the viewable area
554 * (curroffset + viewable height) in the
555 * cycling buffer. The corresponding row
556 * is computed from this top row.
559 (vb->vb_curroffset + h + r) %
563 * The buffer is not full, therefore,
564 * we didn't cycle already. The
565 * corresponding rows are the same in
568 oldrow = copyrows[r];
571 MIN(p->tp_col, w) * sizeof(term_char_t));
574 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will
575 * extended lines of kernel text using the wrong
578 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
579 row[c] = VTBUF_SPACE_CHAR(ch);
583 /* Fill remaining rows. */
584 for (r = old_history_size; r < history_size; r++) {
586 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
587 row[c] = VTBUF_SPACE_CHAR(ch);
591 vb->vb_flags &= ~VBF_HISTORY_FULL;
594 * If the screen is already filled (there are non-visible lines
595 * above the current viewable area), adjust curroffset to the
598 * If the old buffer was full, set curroffset to the
599 * <h>th most recent line of history in the new, non-cycled
600 * buffer. Otherwise, it didn't cycle, so the old curroffset
601 * is the same in the new buffer.
604 vb->vb_curroffset = old_history_size - h;
607 * (old_history_size - history_size) lines of history are
610 for (r = 0; r < history_size; r ++) {
614 * Compute the corresponding row in the old buffer.
616 * See the equivalent if{} block above for an
621 (vb->vb_curroffset + h + r +
622 (old_history_size - history_size)) %
625 oldrow = copyrows[r];
628 MIN(p->tp_col, w) * sizeof(term_char_t));
631 * XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will
632 * extended lines of kernel text using the wrong
635 for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
636 row[c] = VTBUF_SPACE_CHAR(ch);
641 vb->vb_curroffset = history_size - h;
642 vb->vb_flags |= VBF_HISTORY_FULL;
646 vb->vb_roffset = vb->vb_curroffset;
648 /* Adjust cursor position. */
649 if (vb->vb_cursor.tp_col > p->tp_col - 1)
651 * Move cursor to the last column, in case its previous
652 * position is outside of the new screen area.
654 vb->vb_cursor.tp_col = p->tp_col - 1;
656 if (vb->vb_curroffset > 0 || vb->vb_cursor.tp_row > p->tp_row - 1)
657 /* Move cursor to the last line on the screen. */
658 vb->vb_cursor.tp_row = p->tp_row - 1;
662 /* Deallocate old buffer. */
664 free(oldrows, M_VTBUF);
668 vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c)
672 KASSERT(p->tp_row < vb->vb_scr_size.tp_row,
673 ("vtbuf_putchar tp_row %d must be less than screen width %d",
674 p->tp_row, vb->vb_scr_size.tp_row));
675 KASSERT(p->tp_col < vb->vb_scr_size.tp_col,
676 ("vtbuf_putchar tp_col %d must be less than screen height %d",
677 p->tp_col, vb->vb_scr_size.tp_col));
679 row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) %
680 VTBUF_MAX_HEIGHT(vb)];
681 if (row[p->tp_col] != c) {
683 vtbuf_dirty_cell(vb, p);
688 vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p)
690 if (vb->vb_flags & VBF_CURSOR) {
691 vtbuf_dirty_cell(vb, &vb->vb_cursor);
693 vtbuf_dirty_cell(vb, &vb->vb_cursor);
699 #ifndef SC_NO_CUTPASTE
701 vtbuf_flush_mark(struct vt_buf *vb)
706 /* Notify renderer to update marked region. */
707 if ((vb->vb_mark_start.tp_col != vb->vb_mark_end.tp_col) ||
708 (vb->vb_mark_start.tp_row != vb->vb_mark_end.tp_row)) {
709 s = vtbuf_htw(vb, vb->vb_mark_start.tp_row);
710 e = vtbuf_htw(vb, vb->vb_mark_end.tp_row);
712 area.tr_begin.tp_col = 0;
713 area.tr_begin.tp_row = MIN(s, e);
715 area.tr_end.tp_col = vb->vb_scr_size.tp_col;
716 area.tr_end.tp_row = MAX(s, e) + 1;
719 vtbuf_dirty(vb, &area);
725 vtbuf_get_marked_len(struct vt_buf *vb)
730 /* Swap according to window coordinates. */
731 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),
732 vb->vb_mark_start.tp_col) >
733 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),
734 vb->vb_mark_end.tp_col)) {
735 POS_COPY(e, vb->vb_mark_start);
736 POS_COPY(s, vb->vb_mark_end);
738 POS_COPY(s, vb->vb_mark_start);
739 POS_COPY(e, vb->vb_mark_end);
742 si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col;
743 ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col;
745 /* Number symbols and number of rows to inject \n */
746 sz = ei - si + ((e.tp_row - s.tp_row) * 2);
748 return (sz * sizeof(term_char_t));
752 vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz)
757 /* Swap according to window coordinates. */
758 if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),
759 vb->vb_mark_start.tp_col) >
760 POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),
761 vb->vb_mark_end.tp_col)) {
762 POS_COPY(e, vb->vb_mark_start);
763 POS_COPY(s, vb->vb_mark_end);
765 POS_COPY(s, vb->vb_mark_start);
766 POS_COPY(e, vb->vb_mark_end);
770 for (r = s.tp_row; r <= e.tp_row; r ++) {
771 cs = (r == s.tp_row)?s.tp_col:0;
772 ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col;
773 for (c = cs; c < ce; c ++) {
774 buf[i++] = vb->vb_rows[r][c];
776 /* Add new line for all rows, but not for last one. */
785 vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row)
791 case VTB_MARK_END: /* B1 UP */
792 if (vb->vb_mark_last != VTB_MARK_MOVE)
796 case VTB_MARK_EXTEND:
797 vtbuf_flush_mark(vb); /* Clean old mark. */
798 vb->vb_mark_end.tp_col = col;
799 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);
802 vtbuf_flush_mark(vb); /* Clean old mark. */
803 vb->vb_mark_start.tp_col = col;
804 vb->vb_mark_start.tp_row = vtbuf_wth(vb, row);
805 /* Start again, so clear end point. */
806 vb->vb_mark_end.tp_col = col;
807 vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);
810 vtbuf_flush_mark(vb); /* Clean old mark. */
811 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =
813 r = vb->vb_rows[vb->vb_mark_start.tp_row];
814 for (i = col; i >= 0; i --) {
815 if (TCHAR_CHARACTER(r[i]) == ' ') {
816 vb->vb_mark_start.tp_col = i + 1;
820 for (i = col; i < vb->vb_scr_size.tp_col; i ++) {
821 if (TCHAR_CHARACTER(r[i]) == ' ') {
822 vb->vb_mark_end.tp_col = i;
826 if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col)
827 vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col;
830 vtbuf_flush_mark(vb); /* Clean old mark. */
831 vb->vb_mark_start.tp_col = 0;
832 vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col;
833 vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =
837 vb->vb_mark_last = type;
844 vb->vb_mark_last = type;
845 /* Draw new marked region. */
846 vtbuf_flush_mark(vb);
852 vtbuf_cursor_visibility(struct vt_buf *vb, int yes)
856 oflags = vb->vb_flags;
858 vb->vb_flags |= VBF_CURSOR;
860 vb->vb_flags &= ~VBF_CURSOR;
861 nflags = vb->vb_flags;
863 if (oflags != nflags)
864 vtbuf_dirty_cell(vb, &vb->vb_cursor);
868 vtbuf_scroll_mode(struct vt_buf *vb, int yes)
873 oflags = vb->vb_flags;
875 vb->vb_flags |= VBF_SCROLL;
877 vb->vb_flags &= ~VBF_SCROLL;
878 nflags = vb->vb_flags;
880 if (oflags != nflags)
881 vtbuf_dirty_cell(vb, &vb->vb_cursor);