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tty.c
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/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <curses.h>
#include <errno.h>
#include <fcntl.h>
#include <resolv.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include "tmux.h"
static int tty_log_fd = -1;
static void tty_set_italics(struct tty *);
static int tty_try_colour(struct tty *, int, const char *);
static void tty_force_cursor_colour(struct tty *, int);
static void tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
u_int);
static void tty_cursor_pane_unless_wrap(struct tty *,
const struct tty_ctx *, u_int, u_int);
static void tty_colours(struct tty *, const struct grid_cell *);
static void tty_check_fg(struct tty *, struct colour_palette *,
struct grid_cell *);
static void tty_check_bg(struct tty *, struct colour_palette *,
struct grid_cell *);
static void tty_check_us(struct tty *, struct colour_palette *,
struct grid_cell *);
static void tty_colours_fg(struct tty *, const struct grid_cell *);
static void tty_colours_bg(struct tty *, const struct grid_cell *);
static void tty_colours_us(struct tty *, const struct grid_cell *);
static void tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
u_int);
static void tty_region(struct tty *, u_int, u_int);
static void tty_margin_pane(struct tty *, const struct tty_ctx *);
static void tty_margin(struct tty *, u_int, u_int);
static int tty_large_region(struct tty *, const struct tty_ctx *);
static int tty_fake_bce(const struct tty *, const struct grid_cell *,
u_int);
static void tty_redraw_region(struct tty *, const struct tty_ctx *);
static void tty_emulate_repeat(struct tty *, enum tty_code_code,
enum tty_code_code, u_int);
static void tty_repeat_space(struct tty *, u_int);
static void tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
static void tty_default_attributes(struct tty *, const struct grid_cell *,
struct colour_palette *, u_int, struct hyperlinks *);
static int tty_check_overlay(struct tty *, u_int, u_int);
static void tty_check_overlay_range(struct tty *, u_int, u_int, u_int,
struct overlay_ranges *);
#ifdef ENABLE_SIXEL
static void tty_write_one(void (*)(struct tty *, const struct tty_ctx *),
struct client *, struct tty_ctx *);
#endif
#define tty_use_margin(tty) \
(tty->term->flags & TERM_DECSLRM)
#define tty_full_width(tty, ctx) \
((ctx)->xoff == 0 && (ctx)->sx >= (tty)->sx)
#define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
#define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
#define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
#define TTY_QUERY_TIMEOUT 5
#define TTY_REQUEST_LIMIT 30
void
tty_create_log(void)
{
char name[64];
xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
fatal("fcntl failed");
}
int
tty_init(struct tty *tty, struct client *c)
{
if (!isatty(c->fd))
return (-1);
memset(tty, 0, sizeof *tty);
tty->client = c;
tty->cstyle = SCREEN_CURSOR_DEFAULT;
tty->ccolour = -1;
tty->fg = tty->bg = -1;
if (tcgetattr(c->fd, &tty->tio) != 0)
return (-1);
return (0);
}
void
tty_resize(struct tty *tty)
{
struct client *c = tty->client;
struct winsize ws;
u_int sx, sy, xpixel, ypixel;
if (ioctl(c->fd, TIOCGWINSZ, &ws) != -1) {
sx = ws.ws_col;
if (sx == 0) {
sx = 80;
xpixel = 0;
} else
xpixel = ws.ws_xpixel / sx;
sy = ws.ws_row;
if (sy == 0) {
sy = 24;
ypixel = 0;
} else
ypixel = ws.ws_ypixel / sy;
if ((xpixel == 0 || ypixel == 0) &&
tty->out != NULL &&
!(tty->flags & TTY_WINSIZEQUERY) &&
(tty->term->flags & TERM_VT100LIKE)) {
tty_puts(tty, "\033[18t\033[14t");
tty->flags |= TTY_WINSIZEQUERY;
}
} else {
sx = 80;
sy = 24;
xpixel = 0;
ypixel = 0;
}
log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
xpixel, ypixel);
tty_set_size(tty, sx, sy, xpixel, ypixel);
tty_invalidate(tty);
}
void
tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
{
tty->sx = sx;
tty->sy = sy;
tty->xpixel = xpixel;
tty->ypixel = ypixel;
}
static void
tty_read_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
struct client *c = tty->client;
const char *name = c->name;
size_t size = EVBUFFER_LENGTH(tty->in);
int nread;
nread = evbuffer_read(tty->in, c->fd, -1);
if (nread == 0 || nread == -1) {
if (nread == 0)
log_debug("%s: read closed", name);
else
log_debug("%s: read error: %s", name, strerror(errno));
event_del(&tty->event_in);
server_client_lost(tty->client);
return;
}
log_debug("%s: read %d bytes (already %zu)", name, nread, size);
while (tty_keys_next(tty))
;
}
static void
tty_timer_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
struct client *c = tty->client;
struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
log_debug("%s: %zu discarded", c->name, tty->discarded);
c->flags |= CLIENT_ALLREDRAWFLAGS;
c->discarded += tty->discarded;
if (tty->discarded < TTY_BLOCK_STOP(tty)) {
tty->flags &= ~TTY_BLOCK;
tty_invalidate(tty);
return;
}
tty->discarded = 0;
evtimer_add(&tty->timer, &tv);
}
static int
tty_block_maybe(struct tty *tty)
{
struct client *c = tty->client;
size_t size = EVBUFFER_LENGTH(tty->out);
struct timeval tv = { .tv_usec = TTY_BLOCK_INTERVAL };
if (size == 0)
tty->flags &= ~TTY_NOBLOCK;
else if (tty->flags & TTY_NOBLOCK)
return (0);
if (size < TTY_BLOCK_START(tty))
return (0);
if (tty->flags & TTY_BLOCK)
return (1);
tty->flags |= TTY_BLOCK;
log_debug("%s: can't keep up, %zu discarded", c->name, size);
evbuffer_drain(tty->out, size);
c->discarded += size;
tty->discarded = 0;
evtimer_add(&tty->timer, &tv);
return (1);
}
static void
tty_write_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
struct client *c = tty->client;
size_t size = EVBUFFER_LENGTH(tty->out);
int nwrite;
nwrite = evbuffer_write(tty->out, c->fd);
if (nwrite == -1)
return;
log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
if (c->redraw > 0) {
if ((size_t)nwrite >= c->redraw)
c->redraw = 0;
else
c->redraw -= nwrite;
log_debug("%s: waiting for redraw, %zu bytes left", c->name,
c->redraw);
} else if (tty_block_maybe(tty))
return;
if (EVBUFFER_LENGTH(tty->out) != 0)
event_add(&tty->event_out, NULL);
}
int
tty_open(struct tty *tty, char **cause)
{
struct client *c = tty->client;
tty->term = tty_term_create(tty, c->term_name, c->term_caps,
c->term_ncaps, &c->term_features, cause);
if (tty->term == NULL) {
tty_close(tty);
return (-1);
}
tty->flags |= TTY_OPENED;
tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
event_set(&tty->event_in, c->fd, EV_PERSIST|EV_READ,
tty_read_callback, tty);
tty->in = evbuffer_new();
if (tty->in == NULL)
fatal("out of memory");
event_set(&tty->event_out, c->fd, EV_WRITE, tty_write_callback, tty);
tty->out = evbuffer_new();
if (tty->out == NULL)
fatal("out of memory");
evtimer_set(&tty->timer, tty_timer_callback, tty);
tty_start_tty(tty);
tty_keys_build(tty);
return (0);
}
static void
tty_start_timer_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
struct client *c = tty->client;
log_debug("%s: start timer fired", c->name);
if ((tty->flags & (TTY_HAVEDA|TTY_HAVEDA2|TTY_HAVEXDA)) == 0)
tty_update_features(tty);
tty->flags |= TTY_ALL_REQUEST_FLAGS;
}
void
tty_start_tty(struct tty *tty)
{
struct client *c = tty->client;
struct termios tio;
struct timeval tv = { .tv_sec = TTY_QUERY_TIMEOUT };
setblocking(c->fd, 0);
event_add(&tty->event_in, NULL);
memcpy(&tio, &tty->tio, sizeof tio);
tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
tio.c_iflag |= IGNBRK;
tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|ECHOPRT|
ECHOKE|ISIG);
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (tcsetattr(c->fd, TCSANOW, &tio) == 0)
tcflush(c->fd, TCOFLUSH);
tty_putcode(tty, TTYC_SMCUP);
tty_putcode(tty, TTYC_SMKX);
tty_putcode(tty, TTYC_CLEAR);
if (tty_acs_needed(tty)) {
log_debug("%s: using capabilities for ACS", c->name);
tty_putcode(tty, TTYC_ENACS);
} else
log_debug("%s: using UTF-8 for ACS", c->name);
tty_putcode(tty, TTYC_CNORM);
if (tty_term_has(tty->term, TTYC_KMOUS)) {
tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
tty_puts(tty, "\033[?1006l\033[?1005l");
}
if (tty_term_has(tty->term, TTYC_ENBP))
tty_putcode(tty, TTYC_ENBP);
if (tty->term->flags & TERM_VT100LIKE) {
/* Subscribe to theme changes and request theme now. */
tty_puts(tty, "\033[?2031h\033[?996n");
}
evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
evtimer_add(&tty->start_timer, &tv);
tty->flags |= TTY_STARTED;
tty_invalidate(tty);
if (tty->ccolour != -1)
tty_force_cursor_colour(tty, -1);
tty->mouse_drag_flag = 0;
tty->mouse_drag_update = NULL;
tty->mouse_drag_release = NULL;
}
void
tty_send_requests(struct tty *tty)
{
if (~tty->flags & TTY_STARTED)
return;
if (tty->term->flags & TERM_VT100LIKE) {
if (~tty->term->flags & TTY_HAVEDA)
tty_puts(tty, "\033[c");
if (~tty->flags & TTY_HAVEDA2)
tty_puts(tty, "\033[>c");
if (~tty->flags & TTY_HAVEXDA)
tty_puts(tty, "\033[>q");
tty_puts(tty, "\033]10;?\033\\");
tty_puts(tty, "\033]11;?\033\\");
} else
tty->flags |= TTY_ALL_REQUEST_FLAGS;
tty->last_requests = time(NULL);
}
void
tty_repeat_requests(struct tty *tty)
{
time_t t = time(NULL);
if (~tty->flags & TTY_STARTED)
return;
if (t - tty->last_requests <= TTY_REQUEST_LIMIT)
return;
tty->last_requests = t;
if (tty->term->flags & TERM_VT100LIKE) {
tty_puts(tty, "\033]10;?\033\\");
tty_puts(tty, "\033]11;?\033\\");
}
}
void
tty_stop_tty(struct tty *tty)
{
struct client *c = tty->client;
struct winsize ws;
if (!(tty->flags & TTY_STARTED))
return;
tty->flags &= ~TTY_STARTED;
evtimer_del(&tty->start_timer);
event_del(&tty->timer);
tty->flags &= ~TTY_BLOCK;
event_del(&tty->event_in);
event_del(&tty->event_out);
/*
* Be flexible about error handling and try not kill the server just
* because the fd is invalid. Things like ssh -t can easily leave us
* with a dead tty.
*/
if (ioctl(c->fd, TIOCGWINSZ, &ws) == -1)
return;
if (tcsetattr(c->fd, TCSANOW, &tty->tio) == -1)
return;
tty_raw(tty, tty_term_string_ii(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
if (tty_acs_needed(tty))
tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
if (tty_term_has(tty->term, TTYC_SE))
tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
else if (tty_term_has(tty->term, TTYC_SS))
tty_raw(tty, tty_term_string_i(tty->term, TTYC_SS, 0));
}
if (tty->ccolour != -1)
tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
if (tty_term_has(tty->term, TTYC_KMOUS)) {
tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
tty_raw(tty, "\033[?1006l\033[?1005l");
}
if (tty_term_has(tty->term, TTYC_DSBP))
tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
if (tty->term->flags & TERM_VT100LIKE)
tty_raw(tty, "\033[?7727l");
tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
tty_raw(tty, tty_term_string(tty->term, TTYC_DSEKS));
if (tty_use_margin(tty))
tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
if (tty->term->flags & TERM_VT100LIKE)
tty_raw(tty, "\033[?2031l");
setblocking(c->fd, 1);
}
void
tty_close(struct tty *tty)
{
if (event_initialized(&tty->key_timer))
evtimer_del(&tty->key_timer);
tty_stop_tty(tty);
if (tty->flags & TTY_OPENED) {
evbuffer_free(tty->in);
event_del(&tty->event_in);
evbuffer_free(tty->out);
event_del(&tty->event_out);
tty_term_free(tty->term);
tty_keys_free(tty);
tty->flags &= ~TTY_OPENED;
}
}
void
tty_free(struct tty *tty)
{
tty_close(tty);
}
void
tty_update_features(struct tty *tty)
{
struct client *c = tty->client;
if (tty_apply_features(tty->term, c->term_features))
tty_term_apply_overrides(tty->term);
if (tty_use_margin(tty))
tty_putcode(tty, TTYC_ENMG);
if (options_get_number(global_options, "extended-keys"))
tty_puts(tty, tty_term_string(tty->term, TTYC_ENEKS));
if (options_get_number(global_options, "focus-events"))
tty_puts(tty, tty_term_string(tty->term, TTYC_ENFCS));
if (tty->term->flags & TERM_VT100LIKE)
tty_puts(tty, "\033[?7727h");
/*
* Features might have changed since the first draw during attach. For
* example, this happens when DA responses are received.
*/
server_redraw_client(c);
tty_invalidate(tty);
}
void
tty_raw(struct tty *tty, const char *s)
{
struct client *c = tty->client;
ssize_t n, slen;
u_int i;
slen = strlen(s);
for (i = 0; i < 5; i++) {
n = write(c->fd, s, slen);
if (n >= 0) {
s += n;
slen -= n;
if (slen == 0)
break;
} else if (n == -1 && errno != EAGAIN)
break;
usleep(100);
}
}
void
tty_putcode(struct tty *tty, enum tty_code_code code)
{
tty_puts(tty, tty_term_string(tty->term, code));
}
void
tty_putcode_i(struct tty *tty, enum tty_code_code code, int a)
{
if (a < 0)
return;
tty_puts(tty, tty_term_string_i(tty->term, code, a));
}
void
tty_putcode_ii(struct tty *tty, enum tty_code_code code, int a, int b)
{
if (a < 0 || b < 0)
return;
tty_puts(tty, tty_term_string_ii(tty->term, code, a, b));
}
void
tty_putcode_iii(struct tty *tty, enum tty_code_code code, int a, int b, int c)
{
if (a < 0 || b < 0 || c < 0)
return;
tty_puts(tty, tty_term_string_iii(tty->term, code, a, b, c));
}
void
tty_putcode_s(struct tty *tty, enum tty_code_code code, const char *a)
{
if (a != NULL)
tty_puts(tty, tty_term_string_s(tty->term, code, a));
}
void
tty_putcode_ss(struct tty *tty, enum tty_code_code code, const char *a,
const char *b)
{
if (a != NULL && b != NULL)
tty_puts(tty, tty_term_string_ss(tty->term, code, a, b));
}
static void
tty_add(struct tty *tty, const char *buf, size_t len)
{
struct client *c = tty->client;
if (tty->flags & TTY_BLOCK) {
tty->discarded += len;
return;
}
evbuffer_add(tty->out, buf, len);
log_debug("%s: %.*s", c->name, (int)len, buf);
c->written += len;
if (tty_log_fd != -1)
write(tty_log_fd, buf, len);
if (tty->flags & TTY_STARTED)
event_add(&tty->event_out, NULL);
}
void
tty_puts(struct tty *tty, const char *s)
{
if (*s != '\0')
tty_add(tty, s, strlen(s));
}
void
tty_putc(struct tty *tty, u_char ch)
{
const char *acs;
if ((tty->term->flags & TERM_NOAM) &&
ch >= 0x20 && ch != 0x7f &&
tty->cy == tty->sy - 1 &&
tty->cx + 1 >= tty->sx)
return;
if (tty->cell.attr & GRID_ATTR_CHARSET) {
acs = tty_acs_get(tty, ch);
if (acs != NULL)
tty_add(tty, acs, strlen(acs));
else
tty_add(tty, &ch, 1);
} else
tty_add(tty, &ch, 1);
if (ch >= 0x20 && ch != 0x7f) {
if (tty->cx >= tty->sx) {
tty->cx = 1;
if (tty->cy != tty->rlower)
tty->cy++;
/*
* On !am terminals, force the cursor position to where
* we think it should be after a line wrap - this means
* it works on sensible terminals as well.
*/
if (tty->term->flags & TERM_NOAM)
tty_putcode_ii(tty, TTYC_CUP, tty->cy, tty->cx);
} else
tty->cx++;
}
}
void
tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
{
if ((tty->term->flags & TERM_NOAM) &&
tty->cy == tty->sy - 1 &&
tty->cx + len >= tty->sx)
len = tty->sx - tty->cx - 1;
tty_add(tty, buf, len);
if (tty->cx + width > tty->sx) {
tty->cx = (tty->cx + width) - tty->sx;
if (tty->cx <= tty->sx)
tty->cy++;
else
tty->cx = tty->cy = UINT_MAX;
} else
tty->cx += width;
}
static void
tty_set_italics(struct tty *tty)
{
const char *s;
if (tty_term_has(tty->term, TTYC_SITM)) {
s = options_get_string(global_options, "default-terminal");
if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
tty_putcode(tty, TTYC_SITM);
return;
}
}
tty_putcode(tty, TTYC_SMSO);
}
void
tty_set_title(struct tty *tty, const char *title)
{
if (!tty_term_has(tty->term, TTYC_TSL) ||
!tty_term_has(tty->term, TTYC_FSL))
return;
tty_putcode(tty, TTYC_TSL);
tty_puts(tty, title);
tty_putcode(tty, TTYC_FSL);
}
void
tty_set_path(struct tty *tty, const char *title)
{
if (!tty_term_has(tty->term, TTYC_SWD) ||
!tty_term_has(tty->term, TTYC_FSL))
return;
tty_putcode(tty, TTYC_SWD);
tty_puts(tty, title);
tty_putcode(tty, TTYC_FSL);
}
static void
tty_force_cursor_colour(struct tty *tty, int c)
{
u_char r, g, b;
char s[13];
if (c != -1)
c = colour_force_rgb(c);
if (c == tty->ccolour)
return;
if (c == -1)
tty_putcode(tty, TTYC_CR);
else {
colour_split_rgb(c, &r, &g, &b);
xsnprintf(s, sizeof s, "rgb:%02hhx/%02hhx/%02hhx", r, g, b);
tty_putcode_s(tty, TTYC_CS, s);
}
tty->ccolour = c;
}
static int
tty_update_cursor(struct tty *tty, int mode, struct screen *s)
{
enum screen_cursor_style cstyle;
int ccolour, changed, cmode = mode;
/* Set cursor colour if changed. */
if (s != NULL) {
ccolour = s->ccolour;
if (s->ccolour == -1)
ccolour = s->default_ccolour;
tty_force_cursor_colour(tty, ccolour);
}
/* If cursor is off, set as invisible. */
if (~cmode & MODE_CURSOR) {
if (tty->mode & MODE_CURSOR)
tty_putcode(tty, TTYC_CIVIS);
return (cmode);
}
/* Check if blinking or very visible flag changed or style changed. */
if (s == NULL)
cstyle = tty->cstyle;
else {
cstyle = s->cstyle;
if (cstyle == SCREEN_CURSOR_DEFAULT) {
if (~cmode & MODE_CURSOR_BLINKING_SET) {
if (s->default_mode & MODE_CURSOR_BLINKING)
cmode |= MODE_CURSOR_BLINKING;
else
cmode &= ~MODE_CURSOR_BLINKING;
}
cstyle = s->default_cstyle;
}
}
/* If nothing changed, do nothing. */
changed = cmode ^ tty->mode;
if ((changed & CURSOR_MODES) == 0 && cstyle == tty->cstyle)
return (cmode);
/*
* Set cursor style. If an explicit style has been set with DECSCUSR,
* set it if supported, otherwise send cvvis for blinking styles.
*
* If no style, has been set (SCREEN_CURSOR_DEFAULT), then send cvvis
* if either the blinking or very visible flags are set.
*/
tty_putcode(tty, TTYC_CNORM);
switch (cstyle) {
case SCREEN_CURSOR_DEFAULT:
if (tty->cstyle != SCREEN_CURSOR_DEFAULT) {
if (tty_term_has(tty->term, TTYC_SE))
tty_putcode(tty, TTYC_SE);
else
tty_putcode_i(tty, TTYC_SS, 0);
}
if (cmode & (MODE_CURSOR_BLINKING|MODE_CURSOR_VERY_VISIBLE))
tty_putcode(tty, TTYC_CVVIS);
break;
case SCREEN_CURSOR_BLOCK:
if (tty_term_has(tty->term, TTYC_SS)) {
if (cmode & MODE_CURSOR_BLINKING)
tty_putcode_i(tty, TTYC_SS, 1);
else
tty_putcode_i(tty, TTYC_SS, 2);
} else if (cmode & MODE_CURSOR_BLINKING)
tty_putcode(tty, TTYC_CVVIS);
break;
case SCREEN_CURSOR_UNDERLINE:
if (tty_term_has(tty->term, TTYC_SS)) {
if (cmode & MODE_CURSOR_BLINKING)
tty_putcode_i(tty, TTYC_SS, 3);
else
tty_putcode_i(tty, TTYC_SS, 4);
} else if (cmode & MODE_CURSOR_BLINKING)
tty_putcode(tty, TTYC_CVVIS);
break;
case SCREEN_CURSOR_BAR:
if (tty_term_has(tty->term, TTYC_SS)) {
if (cmode & MODE_CURSOR_BLINKING)
tty_putcode_i(tty, TTYC_SS, 5);
else
tty_putcode_i(tty, TTYC_SS, 6);
} else if (cmode & MODE_CURSOR_BLINKING)
tty_putcode(tty, TTYC_CVVIS);
break;
}
tty->cstyle = cstyle;
return (cmode);
}
void
tty_update_mode(struct tty *tty, int mode, struct screen *s)
{
struct tty_term *term = tty->term;
struct client *c = tty->client;
int changed;
if (tty->flags & TTY_NOCURSOR)
mode &= ~MODE_CURSOR;
if (tty_update_cursor(tty, mode, s) & MODE_CURSOR_BLINKING)
mode |= MODE_CURSOR_BLINKING;
else
mode &= ~MODE_CURSOR_BLINKING;
changed = mode ^ tty->mode;
if (log_get_level() != 0 && changed != 0) {
log_debug("%s: current mode %s", c->name,
screen_mode_to_string(tty->mode));
log_debug("%s: setting mode %s", c->name,
screen_mode_to_string(mode));
}
if ((changed & ALL_MOUSE_MODES) && tty_term_has(term, TTYC_KMOUS)) {
/*
* If the mouse modes have changed, clear then all and apply
* again. There are differences in how terminals track the
* various bits.
*/
tty_puts(tty, "\033[?1006l\033[?1000l\033[?1002l\033[?1003l");
if (mode & ALL_MOUSE_MODES)
tty_puts(tty, "\033[?1006h");
if (mode & MODE_MOUSE_ALL)
tty_puts(tty, "\033[?1000h\033[?1002h\033[?1003h");
else if (mode & MODE_MOUSE_BUTTON)
tty_puts(tty, "\033[?1000h\033[?1002h");
else if (mode & MODE_MOUSE_STANDARD)
tty_puts(tty, "\033[?1000h");
}
tty->mode = mode;
}
static void
tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
enum tty_code_code code1, u_int n)
{
if (tty_term_has(tty->term, code))
tty_putcode_i(tty, code, n);
else {
while (n-- > 0)
tty_putcode(tty, code1);
}
}
static void
tty_repeat_space(struct tty *tty, u_int n)
{
static char s[500];
if (*s != ' ')
memset(s, ' ', sizeof s);
while (n > sizeof s) {
tty_putn(tty, s, sizeof s, sizeof s);
n -= sizeof s;
}
if (n != 0)
tty_putn(tty, s, n, n);
}
/* Is this window bigger than the terminal? */
int
tty_window_bigger(struct tty *tty)
{
struct client *c = tty->client;
struct window *w = c->session->curw->window;
return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
}
/* What offset should this window be drawn at? */
int
tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
{
*ox = tty->oox;
*oy = tty->ooy;
*sx = tty->osx;
*sy = tty->osy;
return (tty->oflag);
}
/* What offset should this window be drawn at? */
static int
tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
{
struct client *c = tty->client;
struct window *w = c->session->curw->window;
struct window_pane *wp = server_client_get_pane(c);
u_int cx, cy, lines;
lines = status_line_size(c);
if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
*ox = 0;
*oy = 0;
*sx = w->sx;
*sy = w->sy;
c->pan_window = NULL;
return (0);
}
*sx = tty->sx;
*sy = tty->sy - lines;
if (c->pan_window == w) {
if (*sx >= w->sx)
c->pan_ox = 0;
else if (c->pan_ox + *sx > w->sx)
c->pan_ox = w->sx - *sx;
*ox = c->pan_ox;
if (*sy >= w->sy)
c->pan_oy = 0;
else if (c->pan_oy + *sy > w->sy)
c->pan_oy = w->sy - *sy;
*oy = c->pan_oy;
return (1);
}
if (~wp->screen->mode & MODE_CURSOR) {
*ox = 0;
*oy = 0;
} else {
cx = wp->xoff + wp->screen->cx;
cy = wp->yoff + wp->screen->cy;
if (cx < *sx)
*ox = 0;
else if (cx > w->sx - *sx)
*ox = w->sx - *sx;
else
*ox = cx - *sx / 2;
if (cy < *sy)
*oy = 0;
else if (cy > w->sy - *sy)
*oy = w->sy - *sy;
else
*oy = cy - *sy / 2;
}
c->pan_window = NULL;
return (1);
}
/* Update stored offsets for a window and redraw if necessary. */
void
tty_update_window_offset(struct window *w)
{
struct client *c;
TAILQ_FOREACH(c, &clients, entry) {
if (c->session != NULL &&
c->session->curw != NULL &&