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freebsd-skq/sys/dev/vt/vt_buf.c
tsoome c4dd153f44 vt: use colors from terminal emulator 
Instead of hardcoded colors, use terminal state. This also means,
we need to record the pointer to terminal state with vtbuf.
2019-09-25 13:24:31 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009, 2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Ed Schouten under sponsorship from the
* FreeBSD Foundation.
*
* Portions of this software were developed by Oleksandr Rybalko
* under sponsorship from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/reboot.h>
#include <sys/systm.h>
#include <dev/vt/vt.h>
static MALLOC_DEFINE(M_VTBUF, "vtbuf", "vt buffer");
#define VTBUF_LOCK(vb) mtx_lock_spin(&(vb)->vb_lock)
#define VTBUF_UNLOCK(vb) mtx_unlock_spin(&(vb)->vb_lock)
#define POS_INDEX(c, r) (((r) << 12) + (c))
#define POS_COPY(d, s) do { \
(d).tp_col = (s).tp_col; \
(d).tp_row = (s).tp_row; \
} while (0)
#ifndef SC_NO_CUTPASTE
static int vtbuf_htw(const struct vt_buf *vb, int row);
static int vtbuf_wth(const struct vt_buf *vb, int row);
static int vtbuf_in_this_range(int begin, int test, int end, int sz);
#endif
/*
* line4
* line5 <--- curroffset (terminal output to that line)
* line0
* line1 <--- roffset (history display from that point)
* line2
* line3
*/
int
vthistory_seek(struct vt_buf *vb, int offset, int whence)
{
int diff, top, bottom, roffset;
/* No scrolling if not enabled. */
if ((vb->vb_flags & VBF_SCROLL) == 0) {
if (vb->vb_roffset != vb->vb_curroffset) {
vb->vb_roffset = vb->vb_curroffset;
return (0xffff);
}
return (0); /* No changes */
}
/* "top" may be a negative integer. */
bottom = vb->vb_curroffset;
top = (vb->vb_flags & VBF_HISTORY_FULL) ?
bottom + vb->vb_scr_size.tp_row - vb->vb_history_size :
0;
roffset = 0; /* Make gcc happy. */
switch (whence) {
case VHS_SET:
if (offset < 0)
offset = 0;
roffset = top + offset;
break;
case VHS_CUR:
/*
* Operate on copy of offset value, since it temporary
* can be bigger than amount of rows in buffer.
*/
roffset = vb->vb_roffset;
if (roffset >= bottom + vb->vb_scr_size.tp_row)
roffset -= vb->vb_history_size;
roffset += offset;
roffset = MAX(roffset, top);
roffset = MIN(roffset, bottom);
if (roffset < 0)
roffset = vb->vb_history_size + roffset;
break;
case VHS_END:
/* Go to current offset. */
roffset = vb->vb_curroffset;
break;
}
diff = vb->vb_roffset != roffset;
vb->vb_roffset = roffset;
return (diff);
}
void
vthistory_addlines(struct vt_buf *vb, int offset)
{
#ifndef SC_NO_CUTPASTE
int cur, sz;
#endif
vb->vb_curroffset += offset;
if (vb->vb_curroffset + vb->vb_scr_size.tp_row >= vb->vb_history_size) {
vb->vb_flags |= VBF_HISTORY_FULL;
vb->vb_curroffset %= vb->vb_history_size;
}
if ((vb->vb_flags & VBF_SCROLL) == 0) {
vb->vb_roffset = vb->vb_curroffset;
}
#ifndef SC_NO_CUTPASTE
sz = vb->vb_history_size;
cur = vb->vb_roffset + vb->vb_scr_size.tp_row + sz - 1;
if (vtbuf_in_this_range(cur, vb->vb_mark_start.tp_row, cur + offset, sz) ||
vtbuf_in_this_range(cur, vb->vb_mark_end.tp_row, cur + offset, sz)) {
/* clear screen selection */
vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row;
vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col;
}
#endif
}
void
vthistory_getpos(const struct vt_buf *vb, unsigned int *offset)
{
*offset = vb->vb_roffset;
}
#ifndef SC_NO_CUTPASTE /* Only mouse support use it now. */
/* Translate history row to current view row number. */
static int
vtbuf_htw(const struct vt_buf *vb, int row)
{
/*
* total 1000 rows.
* History offset roffset winrow
* 205 200 ((205 - 200 + 1000) % 1000) = 5
* 90 990 ((90 - 990 + 1000) % 1000) = 100
*/
return ((row - vb->vb_roffset + vb->vb_history_size) %
vb->vb_history_size);
}
/* Translate current view row number to history row. */
static int
vtbuf_wth(const struct vt_buf *vb, int row)
{
return ((vb->vb_roffset + row) % vb->vb_history_size);
}
/*
* Test if an index in a circular buffer is within a range.
*
* begin - start index
* end - end index
* test - test index
* sz - size of circular buffer when it turns over
*/
static int
vtbuf_in_this_range(int begin, int test, int end, int sz)
{
begin %= sz;
end %= sz;
/* check for inversion */
if (begin > end)
return (test >= begin || test < end);
else
return (test >= begin && test < end);
}
#endif
int
vtbuf_iscursor(const struct vt_buf *vb, int row, int col)
{
#ifndef SC_NO_CUTPASTE
int sc, sr, sz, ec, er, tmp;
#endif
if ((vb->vb_flags & (VBF_CURSOR|VBF_SCROLL)) == VBF_CURSOR &&
(vb->vb_cursor.tp_row == row) && (vb->vb_cursor.tp_col == col))
return (1);
#ifndef SC_NO_CUTPASTE
/* Mark cut/paste region. */
if (vb->vb_mark_start.tp_col == vb->vb_mark_end.tp_col &&
vb->vb_mark_start.tp_row == vb->vb_mark_end.tp_row)
return (0);
sc = vb->vb_mark_start.tp_col;
sr = vb->vb_mark_start.tp_row;
ec = vb->vb_mark_end.tp_col;
er = vb->vb_mark_end.tp_row;
/*
* Information about if the selection was made bottom-top or
* top-bottom is lost due to modulo arithmetics and needs to
* be recovered:
*/
sz = vb->vb_history_size;
tmp = (sz + er - sr) % sz;
row = vtbuf_wth(vb, row);
/* Swap start and end if start > end */
if ((2 * tmp) > sz || (tmp == 0 && sc > ec)) {
tmp = sc; sc = ec; ec = tmp;
tmp = sr; sr = er; er = tmp;
}
if (vtbuf_in_this_range(POS_INDEX(sc, sr), POS_INDEX(col, row),
POS_INDEX(ec, er), POS_INDEX(0, sz)))
return (1);
#endif
return (0);
}
void
vtbuf_lock(struct vt_buf *vb)
{
VTBUF_LOCK(vb);
}
void
vtbuf_unlock(struct vt_buf *vb)
{
VTBUF_UNLOCK(vb);
}
void
vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area)
{
if (vb->vb_dirtyrect.tr_begin.tp_row > area->tr_begin.tp_row)
vb->vb_dirtyrect.tr_begin.tp_row = area->tr_begin.tp_row;
if (vb->vb_dirtyrect.tr_begin.tp_col > area->tr_begin.tp_col)
vb->vb_dirtyrect.tr_begin.tp_col = area->tr_begin.tp_col;
if (vb->vb_dirtyrect.tr_end.tp_row < area->tr_end.tp_row)
vb->vb_dirtyrect.tr_end.tp_row = area->tr_end.tp_row;
if (vb->vb_dirtyrect.tr_end.tp_col < area->tr_end.tp_col)
vb->vb_dirtyrect.tr_end.tp_col = area->tr_end.tp_col;
}
static inline void
vtbuf_dirty_cell(struct vt_buf *vb, const term_pos_t *p)
{
term_rect_t area;
area.tr_begin = *p;
area.tr_end.tp_row = p->tp_row + 1;
area.tr_end.tp_col = p->tp_col + 1;
vtbuf_dirty(vb, &area);
}
static void
vtbuf_make_undirty(struct vt_buf *vb)
{
vb->vb_dirtyrect.tr_begin = vb->vb_scr_size;
vb->vb_dirtyrect.tr_end.tp_row = vb->vb_dirtyrect.tr_end.tp_col = 0;
}
void
vtbuf_undirty(struct vt_buf *vb, term_rect_t *r)
{
*r = vb->vb_dirtyrect;
vtbuf_make_undirty(vb);
}
void
vtbuf_copy(struct vt_buf *vb, const term_rect_t *r, const term_pos_t *p2)
{
const term_pos_t *p1 = &r->tr_begin;
term_rect_t area;
unsigned int rows, cols;
int pr, rdiff;
KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row,
("vtbuf_copy begin.tp_row %d must be less than screen width %d",
r->tr_begin.tp_row, vb->vb_scr_size.tp_row));
KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col,
("vtbuf_copy begin.tp_col %d must be less than screen height %d",
r->tr_begin.tp_col, vb->vb_scr_size.tp_col));
KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row,
("vtbuf_copy end.tp_row %d must be less than screen width %d",
r->tr_end.tp_row, vb->vb_scr_size.tp_row));
KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col,
("vtbuf_copy end.tp_col %d must be less than screen height %d",
r->tr_end.tp_col, vb->vb_scr_size.tp_col));
KASSERT(p2->tp_row < vb->vb_scr_size.tp_row,
("vtbuf_copy tp_row %d must be less than screen width %d",
p2->tp_row, vb->vb_scr_size.tp_row));
KASSERT(p2->tp_col < vb->vb_scr_size.tp_col,
("vtbuf_copy tp_col %d must be less than screen height %d",
p2->tp_col, vb->vb_scr_size.tp_col));
rows = r->tr_end.tp_row - r->tr_begin.tp_row;
rdiff = r->tr_begin.tp_row - p2->tp_row;
cols = r->tr_end.tp_col - r->tr_begin.tp_col;
if (r->tr_begin.tp_row > p2->tp_row && r->tr_begin.tp_col == 0 &&
r->tr_end.tp_col == vb->vb_scr_size.tp_col && /* Full row. */
(rows + rdiff) == vb->vb_scr_size.tp_row && /* Whole screen. */
rdiff > 0) { /* Only forward direction. Do not eat history. */
vthistory_addlines(vb, rdiff);
} else if (p2->tp_row < p1->tp_row) {
/* Handle overlapping copies of line segments. */
/* Move data up. */
for (pr = 0; pr < rows; pr++)
memmove(
&VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col),
&VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col),
cols * sizeof(term_char_t));
} else {
/* Move data down. */
for (pr = rows - 1; pr >= 0; pr--)
memmove(
&VTBUF_FIELD(vb, p2->tp_row + pr, p2->tp_col),
&VTBUF_FIELD(vb, p1->tp_row + pr, p1->tp_col),
cols * sizeof(term_char_t));
}
area.tr_begin = *p2;
area.tr_end.tp_row = MIN(p2->tp_row + rows, vb->vb_scr_size.tp_row);
area.tr_end.tp_col = MIN(p2->tp_col + cols, vb->vb_scr_size.tp_col);
vtbuf_dirty(vb, &area);
}
static void
vtbuf_do_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)
{
unsigned int pr, pc;
term_char_t *row;
for (pr = r->tr_begin.tp_row; pr < r->tr_end.tp_row; pr++) {
row = vb->vb_rows[(vb->vb_curroffset + pr) %
VTBUF_MAX_HEIGHT(vb)];
for (pc = r->tr_begin.tp_col; pc < r->tr_end.tp_col; pc++) {
row[pc] = c;
}
}
}
void
vtbuf_fill(struct vt_buf *vb, const term_rect_t *r, term_char_t c)
{
KASSERT(r->tr_begin.tp_row < vb->vb_scr_size.tp_row,
("vtbuf_fill begin.tp_row %d must be < screen height %d",
r->tr_begin.tp_row, vb->vb_scr_size.tp_row));
KASSERT(r->tr_begin.tp_col < vb->vb_scr_size.tp_col,
("vtbuf_fill begin.tp_col %d must be < screen width %d",
r->tr_begin.tp_col, vb->vb_scr_size.tp_col));
KASSERT(r->tr_end.tp_row <= vb->vb_scr_size.tp_row,
("vtbuf_fill end.tp_row %d must be <= screen height %d",
r->tr_end.tp_row, vb->vb_scr_size.tp_row));
KASSERT(r->tr_end.tp_col <= vb->vb_scr_size.tp_col,
("vtbuf_fill end.tp_col %d must be <= screen width %d",
r->tr_end.tp_col, vb->vb_scr_size.tp_col));
vtbuf_do_fill(vb, r, c);
vtbuf_dirty(vb, r);
}
static void
vtbuf_init_rows(struct vt_buf *vb)
{
int r;
vb->vb_history_size = MAX(vb->vb_history_size, vb->vb_scr_size.tp_row);
for (r = 0; r < vb->vb_history_size; r++)
vb->vb_rows[r] = &vb->vb_buffer[r * vb->vb_scr_size.tp_col];
}
void
vtbuf_init_early(struct vt_buf *vb)
{
term_rect_t rect;
const teken_attr_t *a;
term_char_t c;
vb->vb_flags |= VBF_CURSOR;
vb->vb_roffset = 0;
vb->vb_curroffset = 0;
vb->vb_mark_start.tp_row = 0;
vb->vb_mark_start.tp_col = 0;
vb->vb_mark_end.tp_row = 0;
vb->vb_mark_end.tp_col = 0;
vtbuf_init_rows(vb);
rect.tr_begin.tp_row = rect.tr_begin.tp_col = 0;
rect.tr_end.tp_col = vb->vb_scr_size.tp_col;
rect.tr_end.tp_row = vb->vb_history_size;
a = teken_get_curattr(&vb->vb_terminal->tm_emulator);
c = TCOLOR_FG((term_char_t)a->ta_fgcolor) |
TCOLOR_BG((term_char_t)a->ta_bgcolor);
vtbuf_do_fill(vb, &rect, VTBUF_SPACE_CHAR(c));
vtbuf_make_undirty(vb);
if ((vb->vb_flags & VBF_MTX_INIT) == 0) {
mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN);
vb->vb_flags |= VBF_MTX_INIT;
}
}
void
vtbuf_init(struct vt_buf *vb, const term_pos_t *p)
{
int sz;
vb->vb_scr_size = *p;
vb->vb_history_size = VBF_DEFAULT_HISTORY_SIZE;
if ((vb->vb_flags & VBF_STATIC) == 0) {
sz = vb->vb_history_size * p->tp_col * sizeof(term_char_t);
vb->vb_buffer = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);
sz = vb->vb_history_size * sizeof(term_char_t *);
vb->vb_rows = malloc(sz, M_VTBUF, M_WAITOK | M_ZERO);
}
vtbuf_init_early(vb);
}
void
vtbuf_sethistory_size(struct vt_buf *vb, unsigned int size)
{
term_pos_t p;
/* With same size */
p.tp_row = vb->vb_scr_size.tp_row;
p.tp_col = vb->vb_scr_size.tp_col;
vtbuf_grow(vb, &p, size);
}
void
vtbuf_grow(struct vt_buf *vb, const term_pos_t *p, unsigned int history_size)
{
term_char_t *old, *new, **rows, **oldrows, **copyrows, *row, *oldrow;
unsigned int w, h, c, r, old_history_size;
size_t bufsize, rowssize;
int history_full;
const teken_attr_t *a;
term_char_t ch;
a = teken_get_curattr(&vb->vb_terminal->tm_emulator);
ch = TCOLOR_FG(a->ta_fgcolor) | TCOLOR_BG(a->ta_bgcolor);
history_size = MAX(history_size, p->tp_row);
/* Allocate new buffer. */
bufsize = history_size * p->tp_col * sizeof(term_char_t);
new = malloc(bufsize, M_VTBUF, M_WAITOK | M_ZERO);
rowssize = history_size * sizeof(term_pos_t *);
rows = malloc(rowssize, M_VTBUF, M_WAITOK | M_ZERO);
/* Toggle it. */
VTBUF_LOCK(vb);
old = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_buffer;
oldrows = vb->vb_flags & VBF_STATIC ? NULL : vb->vb_rows;
copyrows = vb->vb_rows;
w = vb->vb_scr_size.tp_col;
h = vb->vb_scr_size.tp_row;
old_history_size = vb->vb_history_size;
history_full = vb->vb_flags & VBF_HISTORY_FULL ||
vb->vb_curroffset + h >= history_size;
vb->vb_history_size = history_size;
vb->vb_buffer = new;
vb->vb_rows = rows;
vb->vb_flags &= ~VBF_STATIC;
vb->vb_scr_size = *p;
vtbuf_init_rows(vb);
/*
* Copy rows to the new buffer. The first row in the history
* is back to index 0, ie. the new buffer doesn't cycle.
*/
if (history_size > old_history_size) {
for (r = 0; r < old_history_size; r ++) {
row = rows[r];
/* Compute the corresponding row in the old buffer. */
if (history_full)
/*
* The buffer is full, the "top" row is
* the one just after the viewable area
* (curroffset + viewable height) in the
* cycling buffer. The corresponding row
* is computed from this top row.
*/
oldrow = copyrows[
(vb->vb_curroffset + h + r) %
old_history_size];
else
/*
* The buffer is not full, therefore,
* we didn't cycle already. The
* corresponding rows are the same in
* both buffers.
*/
oldrow = copyrows[r];
memmove(row, oldrow,
MIN(p->tp_col, w) * sizeof(term_char_t));
/*
* XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will
* extended lines of kernel text using the wrong
* background color.
*/
for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
row[c] = VTBUF_SPACE_CHAR(ch);
}
}
/* Fill remaining rows. */
for (r = old_history_size; r < history_size; r++) {
row = rows[r];
for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
row[c] = VTBUF_SPACE_CHAR(ch);
}
}
vb->vb_flags &= ~VBF_HISTORY_FULL;
/*
* If the screen is already filled (there are non-visible lines
* above the current viewable area), adjust curroffset to the
* new viewable area.
*
* If the old buffer was full, set curroffset to the
* <h>th most recent line of history in the new, non-cycled
* buffer. Otherwise, it didn't cycle, so the old curroffset
* is the same in the new buffer.
*/
if (history_full)
vb->vb_curroffset = old_history_size - h;
} else {
/*
* (old_history_size - history_size) lines of history are
* dropped.
*/
for (r = 0; r < history_size; r ++) {
row = rows[r];
/*
* Compute the corresponding row in the old buffer.
*
* See the equivalent if{} block above for an
* explanation.
*/
if (history_full)
oldrow = copyrows[
(vb->vb_curroffset + h + r +
(old_history_size - history_size)) %
old_history_size];
else
oldrow = copyrows[r];
memmove(row, oldrow,
MIN(p->tp_col, w) * sizeof(term_char_t));
/*
* XXX VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR) will
* extended lines of kernel text using the wrong
* background color.
*/
for (c = MIN(p->tp_col, w); c < p->tp_col; c++) {
row[c] = VTBUF_SPACE_CHAR(ch);
}
}
if (history_full) {
vb->vb_curroffset = history_size - h;
vb->vb_flags |= VBF_HISTORY_FULL;
}
}
vb->vb_roffset = vb->vb_curroffset;
/* Adjust cursor position. */
if (vb->vb_cursor.tp_col > p->tp_col - 1)
/*
* Move cursor to the last column, in case its previous
* position is outside of the new screen area.
*/
vb->vb_cursor.tp_col = p->tp_col - 1;
if (vb->vb_curroffset > 0 || vb->vb_cursor.tp_row > p->tp_row - 1)
/* Move cursor to the last line on the screen. */
vb->vb_cursor.tp_row = p->tp_row - 1;
VTBUF_UNLOCK(vb);
/* Deallocate old buffer. */
free(old, M_VTBUF);
free(oldrows, M_VTBUF);
}
void
vtbuf_putchar(struct vt_buf *vb, const term_pos_t *p, term_char_t c)
{
term_char_t *row;
KASSERT(p->tp_row < vb->vb_scr_size.tp_row,
("vtbuf_putchar tp_row %d must be less than screen width %d",
p->tp_row, vb->vb_scr_size.tp_row));
KASSERT(p->tp_col < vb->vb_scr_size.tp_col,
("vtbuf_putchar tp_col %d must be less than screen height %d",
p->tp_col, vb->vb_scr_size.tp_col));
row = vb->vb_rows[(vb->vb_curroffset + p->tp_row) %
VTBUF_MAX_HEIGHT(vb)];
if (row[p->tp_col] != c) {
row[p->tp_col] = c;
vtbuf_dirty_cell(vb, p);
}
}
void
vtbuf_cursor_position(struct vt_buf *vb, const term_pos_t *p)
{
if (vb->vb_flags & VBF_CURSOR) {
vtbuf_dirty_cell(vb, &vb->vb_cursor);
vb->vb_cursor = *p;
vtbuf_dirty_cell(vb, &vb->vb_cursor);
} else {
vb->vb_cursor = *p;
}
}
#ifndef SC_NO_CUTPASTE
static void
vtbuf_flush_mark(struct vt_buf *vb)
{
term_rect_t area;
int s, e;
/* Notify renderer to update marked region. */
if ((vb->vb_mark_start.tp_col != vb->vb_mark_end.tp_col) ||
(vb->vb_mark_start.tp_row != vb->vb_mark_end.tp_row)) {
s = vtbuf_htw(vb, vb->vb_mark_start.tp_row);
e = vtbuf_htw(vb, vb->vb_mark_end.tp_row);
area.tr_begin.tp_col = 0;
area.tr_begin.tp_row = MIN(s, e);
area.tr_end.tp_col = vb->vb_scr_size.tp_col;
area.tr_end.tp_row = MAX(s, e) + 1;
VTBUF_LOCK(vb);
vtbuf_dirty(vb, &area);
VTBUF_UNLOCK(vb);
}
}
int
vtbuf_get_marked_len(struct vt_buf *vb)
{
int ei, si, sz;
term_pos_t s, e;
/* Swap according to window coordinates. */
if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),
vb->vb_mark_start.tp_col) >
POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),
vb->vb_mark_end.tp_col)) {
POS_COPY(e, vb->vb_mark_start);
POS_COPY(s, vb->vb_mark_end);
} else {
POS_COPY(s, vb->vb_mark_start);
POS_COPY(e, vb->vb_mark_end);
}
si = s.tp_row * vb->vb_scr_size.tp_col + s.tp_col;
ei = e.tp_row * vb->vb_scr_size.tp_col + e.tp_col;
/* Number symbols and number of rows to inject \n */
sz = ei - si + ((e.tp_row - s.tp_row) * 2);
return (sz * sizeof(term_char_t));
}
void
vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz)
{
int i, r, c, cs, ce;
term_pos_t s, e;
/* Swap according to window coordinates. */
if (POS_INDEX(vtbuf_htw(vb, vb->vb_mark_start.tp_row),
vb->vb_mark_start.tp_col) >
POS_INDEX(vtbuf_htw(vb, vb->vb_mark_end.tp_row),
vb->vb_mark_end.tp_col)) {
POS_COPY(e, vb->vb_mark_start);
POS_COPY(s, vb->vb_mark_end);
} else {
POS_COPY(s, vb->vb_mark_start);
POS_COPY(e, vb->vb_mark_end);
}
i = 0;
for (r = s.tp_row; r <= e.tp_row; r ++) {
cs = (r == s.tp_row)?s.tp_col:0;
ce = (r == e.tp_row)?e.tp_col:vb->vb_scr_size.tp_col;
for (c = cs; c < ce; c ++) {
buf[i++] = vb->vb_rows[r][c];
}
/* Add new line for all rows, but not for last one. */
if (r != e.tp_row) {
buf[i++] = '\r';
buf[i++] = '\n';
}
}
}
int
vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row)
{
term_char_t *r;
int i;
switch (type) {
case VTB_MARK_END: /* B1 UP */
if (vb->vb_mark_last != VTB_MARK_MOVE)
return (0);
/* FALLTHROUGH */
case VTB_MARK_MOVE:
case VTB_MARK_EXTEND:
vtbuf_flush_mark(vb); /* Clean old mark. */
vb->vb_mark_end.tp_col = col;
vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);
break;
case VTB_MARK_START:
vtbuf_flush_mark(vb); /* Clean old mark. */
vb->vb_mark_start.tp_col = col;
vb->vb_mark_start.tp_row = vtbuf_wth(vb, row);
/* Start again, so clear end point. */
vb->vb_mark_end.tp_col = col;
vb->vb_mark_end.tp_row = vtbuf_wth(vb, row);
break;
case VTB_MARK_WORD:
vtbuf_flush_mark(vb); /* Clean old mark. */
vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =
vtbuf_wth(vb, row);
r = vb->vb_rows[vb->vb_mark_start.tp_row];
for (i = col; i >= 0; i --) {
if (TCHAR_CHARACTER(r[i]) == ' ') {
vb->vb_mark_start.tp_col = i + 1;
break;
}
}
for (i = col; i < vb->vb_scr_size.tp_col; i ++) {
if (TCHAR_CHARACTER(r[i]) == ' ') {
vb->vb_mark_end.tp_col = i;
break;
}
}
if (vb->vb_mark_start.tp_col > vb->vb_mark_end.tp_col)
vb->vb_mark_start.tp_col = vb->vb_mark_end.tp_col;
break;
case VTB_MARK_ROW:
vtbuf_flush_mark(vb); /* Clean old mark. */
vb->vb_mark_start.tp_col = 0;
vb->vb_mark_end.tp_col = vb->vb_scr_size.tp_col;
vb->vb_mark_start.tp_row = vb->vb_mark_end.tp_row =
vtbuf_wth(vb, row);
break;
case VTB_MARK_NONE:
vb->vb_mark_last = type;
/* FALLTHROUGH */
default:
/* panic? */
return (0);
}
vb->vb_mark_last = type;
/* Draw new marked region. */
vtbuf_flush_mark(vb);
return (1);
}
#endif
void
vtbuf_cursor_visibility(struct vt_buf *vb, int yes)
{
int oflags, nflags;
oflags = vb->vb_flags;
if (yes)
vb->vb_flags |= VBF_CURSOR;
else
vb->vb_flags &= ~VBF_CURSOR;
nflags = vb->vb_flags;
if (oflags != nflags)
vtbuf_dirty_cell(vb, &vb->vb_cursor);
}
void
vtbuf_scroll_mode(struct vt_buf *vb, int yes)
{
int oflags, nflags;
VTBUF_LOCK(vb);
oflags = vb->vb_flags;
if (yes)
vb->vb_flags |= VBF_SCROLL;
else
vb->vb_flags &= ~VBF_SCROLL;
nflags = vb->vb_flags;
if (oflags != nflags)
vtbuf_dirty_cell(vb, &vb->vb_cursor);
VTBUF_UNLOCK(vb);
}
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