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Annotation of src/usr.bin/tmux/tty.c, Revision 1.255

1.255   ! nicm        1: /* $OpenBSD: tty.c,v 1.254 2017/03/15 15:22:14 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.198     nicm        4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20: #include <sys/ioctl.h>
                     21:
1.106     nicm       22: #include <netinet/in.h>
                     23:
1.212     nicm       24: #include <curses.h>
1.1       nicm       25: #include <errno.h>
                     26: #include <fcntl.h>
1.106     nicm       27: #include <resolv.h>
1.42      nicm       28: #include <stdlib.h>
1.1       nicm       29: #include <string.h>
                     30: #include <termios.h>
                     31: #include <unistd.h>
                     32:
                     33: #include "tmux.h"
                     34:
1.207     nicm       35: static int     tty_log_fd = -1;
1.192     nicm       36:
1.207     nicm       37: static int     tty_client_ready(struct client *, struct window_pane *);
1.201     nicm       38:
1.207     nicm       39: static void    tty_set_italics(struct tty *);
                     40: static int     tty_try_colour(struct tty *, int, const char *);
1.208     nicm       41: static void    tty_force_cursor_colour(struct tty *, const char *);
                     42: static void    tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
                     43:                    u_int);
1.253     nicm       44: static void    tty_cursor_pane_unless_wrap(struct tty *,
                     45:                    const struct tty_ctx *, u_int, u_int);
1.242     nicm       46: static void    tty_invalidate(struct tty *);
1.207     nicm       47: static void    tty_colours(struct tty *, const struct grid_cell *);
1.219     nicm       48: static void    tty_check_fg(struct tty *, const struct window_pane *,
                     49:                    struct grid_cell *);
                     50: static void    tty_check_bg(struct tty *, const struct window_pane *,
                     51:                    struct grid_cell *);
1.207     nicm       52: static void    tty_colours_fg(struct tty *, const struct grid_cell *);
                     53: static void    tty_colours_bg(struct tty *, const struct grid_cell *);
                     54:
1.208     nicm       55: static void    tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
                     56:                    u_int);
1.214     nicm       57: static void    tty_region(struct tty *, u_int, u_int);
1.212     nicm       58: static void    tty_margin_pane(struct tty *, const struct tty_ctx *);
1.214     nicm       59: static void    tty_margin(struct tty *, u_int, u_int);
1.207     nicm       60: static int     tty_large_region(struct tty *, const struct tty_ctx *);
1.210     nicm       61: static int     tty_fake_bce(const struct tty *, const struct window_pane *,
                     62:                    u_int);
1.207     nicm       63: static void    tty_redraw_region(struct tty *, const struct tty_ctx *);
                     64: static void    tty_emulate_repeat(struct tty *, enum tty_code_code,
                     65:                    enum tty_code_code, u_int);
                     66: static void    tty_repeat_space(struct tty *, u_int);
                     67: static void    tty_cell(struct tty *, const struct grid_cell *,
                     68:                    const struct window_pane *);
                     69: static void    tty_default_colours(struct grid_cell *,
                     70:                    const struct window_pane *);
1.210     nicm       71: static void    tty_default_attributes(struct tty *, const struct window_pane *,
                     72:                    u_int);
1.1       nicm       73:
1.90      nicm       74: #define tty_use_acs(tty) \
1.131     nicm       75:        (tty_term_has((tty)->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
1.212     nicm       76: #define tty_use_margin(tty) \
1.214     nicm       77:        ((tty)->term_type == TTY_VT420)
1.90      nicm       78:
1.229     nicm       79: #define tty_pane_full_width(tty, ctx)                                  \
1.132     nicm       80:        ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
                     81:
1.192     nicm       82: void
                     83: tty_create_log(void)
                     84: {
                     85:        char    name[64];
                     86:
                     87:        xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
                     88:
                     89:        tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
                     90:        if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
                     91:                fatal("fcntl failed");
                     92: }
                     93:
1.185     nicm       94: int
1.136     nicm       95: tty_init(struct tty *tty, struct client *c, int fd, char *term)
1.1       nicm       96: {
1.30      nicm       97:        char    *path;
                     98:
1.185     nicm       99:        if (!isatty(fd))
                    100:                return (-1);
                    101:
1.30      nicm      102:        memset(tty, 0, sizeof *tty);
1.22      nicm      103:
1.9       nicm      104:        if (term == NULL || *term == '\0')
1.220     nicm      105:                tty->term_name = xstrdup("unknown");
1.1       nicm      106:        else
1.220     nicm      107:                tty->term_name = xstrdup(term);
1.30      nicm      108:        tty->fd = fd;
1.136     nicm      109:        tty->client = c;
1.30      nicm      110:
                    111:        if ((path = ttyname(fd)) == NULL)
1.185     nicm      112:                return (-1);
1.30      nicm      113:        tty->path = xstrdup(path);
1.108     nicm      114:        tty->cstyle = 0;
1.107     nicm      115:        tty->ccolour = xstrdup("");
1.30      nicm      116:
1.1       nicm      117:        tty->flags = 0;
1.212     nicm      118:
1.1       nicm      119:        tty->term_flags = 0;
1.212     nicm      120:        tty->term_type = TTY_UNKNOWN;
1.185     nicm      121:
                    122:        return (0);
1.31      nicm      123: }
                    124:
1.88      nicm      125: int
1.31      nicm      126: tty_resize(struct tty *tty)
                    127: {
                    128:        struct winsize  ws;
1.88      nicm      129:        u_int           sx, sy;
1.31      nicm      130:
                    131:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
1.88      nicm      132:                sx = ws.ws_col;
                    133:                if (sx == 0)
                    134:                        sx = 80;
                    135:                sy = ws.ws_row;
                    136:                if (sy == 0)
                    137:                        sy = 24;
                    138:        } else {
                    139:                sx = 80;
                    140:                sy = 24;
1.31      nicm      141:        }
1.235     nicm      142:        log_debug("%s: %s now %ux%u", __func__, tty->path, sx, sy);
1.114     nicm      143:        if (!tty_set_size(tty, sx, sy))
1.88      nicm      144:                return (0);
1.242     nicm      145:        tty_invalidate(tty);
1.114     nicm      146:        return (1);
                    147: }
                    148:
                    149: int
1.212     nicm      150: tty_set_size(struct tty *tty, u_int sx, u_int sy)
                    151: {
1.114     nicm      152:        if (sx == tty->sx && sy == tty->sy)
                    153:                return (0);
                    154:        tty->sx = sx;
                    155:        tty->sy = sy;
1.88      nicm      156:        return (1);
1.1       nicm      157: }
                    158:
1.244     nicm      159: static void
                    160: tty_read_callback(__unused int fd, __unused short events, void *data)
                    161: {
                    162:        struct tty      *tty = data;
                    163:        size_t           size = EVBUFFER_LENGTH(tty->in);
                    164:        int              nread;
                    165:
                    166:        nread = evbuffer_read(tty->in, tty->fd, -1);
                    167:        if (nread == -1)
                    168:                return;
                    169:        log_debug("%s: read %d bytes (already %zu)", tty->path, nread, size);
                    170:
                    171:        while (tty_keys_next(tty))
                    172:                ;
                    173: }
                    174:
                    175: static void
                    176: tty_write_callback(__unused int fd, __unused short events, void *data)
                    177: {
1.246     nicm      178:        struct tty      *tty = data;
                    179:        size_t           size = EVBUFFER_LENGTH(tty->out);
                    180:        int              nwrite;
1.244     nicm      181:
                    182:        nwrite = evbuffer_write(tty->out, tty->fd);
                    183:        if (nwrite == -1)
                    184:                return;
                    185:        log_debug("%s: wrote %d bytes (of %zu)", tty->path, nwrite, size);
                    186:
1.247     nicm      187:        if (EVBUFFER_LENGTH(tty->out) != 0)
                    188:                event_add(&tty->event_out, NULL);
1.244     nicm      189: }
                    190:
1.1       nicm      191: int
1.166     nicm      192: tty_open(struct tty *tty, char **cause)
1.1       nicm      193: {
1.220     nicm      194:        tty->term = tty_term_find(tty->term_name, tty->fd, cause);
1.21      nicm      195:        if (tty->term == NULL) {
                    196:                tty_close(tty);
                    197:                return (-1);
                    198:        }
                    199:        tty->flags |= TTY_OPENED;
1.1       nicm      200:
1.246     nicm      201:        tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
1.244     nicm      202:
                    203:        event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
                    204:            tty_read_callback, tty);
                    205:        tty->in = evbuffer_new();
1.1       nicm      206:
1.244     nicm      207:        event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
                    208:        tty->out = evbuffer_new();
1.1       nicm      209:
                    210:        tty_start_tty(tty);
                    211:
1.148     nicm      212:        tty_keys_build(tty);
1.1       nicm      213:
                    214:        return (0);
                    215: }
                    216:
1.244     nicm      217: void
                    218: tty_start_tty(struct tty *tty)
1.1       nicm      219: {
1.128     nicm      220:        struct termios  tio;
1.33      nicm      221:
1.244     nicm      222:        if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
                    223:                setblocking(tty->fd, 0);
                    224:                event_add(&tty->event_in, NULL);
                    225:
                    226:                memcpy(&tio, &tty->tio, sizeof tio);
                    227:                tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
                    228:                tio.c_iflag |= IGNBRK;
                    229:                tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
                    230:                tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
                    231:                    ECHOPRT|ECHOKE|ISIG);
                    232:                tio.c_cc[VMIN] = 1;
                    233:                tio.c_cc[VTIME] = 0;
                    234:                if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
                    235:                        tcflush(tty->fd, TCIOFLUSH);
                    236:        }
1.1       nicm      237:
1.10      nicm      238:        tty_putcode(tty, TTYC_SMCUP);
1.1       nicm      239:
1.252     nicm      240:        tty_putcode(tty, TTYC_SMKX);
1.90      nicm      241:        if (tty_use_acs(tty))
                    242:                tty_putcode(tty, TTYC_ENACS);
1.1       nicm      243:        tty_putcode(tty, TTYC_CLEAR);
                    244:
                    245:        tty_putcode(tty, TTYC_CNORM);
                    246:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      247:                tty_puts(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.121     nicm      248:
1.189     nicm      249:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.191     nicm      250:                if (options_get_number(global_options, "focus-events")) {
1.162     nicm      251:                        tty->flags |= TTY_FOCUS;
                    252:                        tty_puts(tty, "\033[?1004h");
                    253:                }
1.212     nicm      254:                tty_puts(tty, "\033[c");
1.162     nicm      255:        }
1.1       nicm      256:
1.20      nicm      257:        tty->flags |= TTY_STARTED;
1.242     nicm      258:        tty_invalidate(tty);
1.107     nicm      259:
                    260:        tty_force_cursor_colour(tty, "");
1.177     nicm      261:
                    262:        tty->mouse_drag_flag = 0;
                    263:        tty->mouse_drag_update = NULL;
                    264:        tty->mouse_drag_release = NULL;
1.128     nicm      265: }
                    266:
                    267: void
1.1       nicm      268: tty_stop_tty(struct tty *tty)
                    269: {
                    270:        struct winsize  ws;
                    271:
1.20      nicm      272:        if (!(tty->flags & TTY_STARTED))
                    273:                return;
                    274:        tty->flags &= ~TTY_STARTED;
                    275:
1.244     nicm      276:        event_del(&tty->event_in);
                    277:        event_del(&tty->event_out);
1.66      nicm      278:
1.1       nicm      279:        /*
                    280:         * Be flexible about error handling and try not kill the server just
                    281:         * because the fd is invalid. Things like ssh -t can easily leave us
                    282:         * with a dead tty.
                    283:         */
                    284:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
                    285:                return;
                    286:        if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
                    287:                return;
                    288:
                    289:        tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
1.90      nicm      290:        if (tty_use_acs(tty))
                    291:                tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
1.1       nicm      292:        tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
                    293:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
                    294:        tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
1.160     nicm      295:        if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) {
                    296:                if (tty_term_has(tty->term, TTYC_SE))
                    297:                        tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
1.109     nicm      298:                else
1.160     nicm      299:                        tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
1.108     nicm      300:        }
1.173     nicm      301:        if (tty->mode & MODE_BRACKETPASTE)
                    302:                tty_raw(tty, "\033[?2004l");
1.107     nicm      303:        tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
1.1       nicm      304:
                    305:        tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
                    306:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      307:                tty_raw(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.151     nicm      308:
1.189     nicm      309:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.162     nicm      310:                if (tty->flags & TTY_FOCUS) {
                    311:                        tty->flags &= ~TTY_FOCUS;
1.172     nicm      312:                        tty_raw(tty, "\033[?1004l");
1.162     nicm      313:                }
                    314:        }
1.10      nicm      315:
1.212     nicm      316:        if (tty_use_margin(tty))
                    317:                tty_raw(tty, "\033[?69l"); /* DECLRMM */
1.10      nicm      318:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
1.150     nicm      319:
                    320:        setblocking(tty->fd, 1);
1.1       nicm      321: }
                    322:
                    323: void
1.20      nicm      324: tty_close(struct tty *tty)
1.1       nicm      325: {
1.123     nicm      326:        if (event_initialized(&tty->key_timer))
                    327:                evtimer_del(&tty->key_timer);
1.20      nicm      328:        tty_stop_tty(tty);
1.1       nicm      329:
1.21      nicm      330:        if (tty->flags & TTY_OPENED) {
1.244     nicm      331:                evbuffer_free(tty->in);
                    332:                event_del(&tty->event_in);
                    333:                evbuffer_free(tty->out);
                    334:                event_del(&tty->event_out);
1.66      nicm      335:
1.21      nicm      336:                tty_term_free(tty->term);
                    337:                tty_keys_free(tty);
                    338:
                    339:                tty->flags &= ~TTY_OPENED;
                    340:        }
1.1       nicm      341:
1.21      nicm      342:        if (tty->fd != -1) {
                    343:                close(tty->fd);
                    344:                tty->fd = -1;
                    345:        }
1.1       nicm      346: }
                    347:
                    348: void
1.20      nicm      349: tty_free(struct tty *tty)
1.1       nicm      350: {
1.20      nicm      351:        tty_close(tty);
1.1       nicm      352:
1.138     nicm      353:        free(tty->ccolour);
1.190     nicm      354:        free(tty->path);
1.220     nicm      355:        free(tty->term_name);
1.1       nicm      356: }
                    357:
                    358: void
1.212     nicm      359: tty_set_type(struct tty *tty, int type)
                    360: {
                    361:        tty->term_type = type;
                    362:
                    363:        if (tty_use_margin(tty))
                    364:                tty_puts(tty, "\033[?69h"); /* DECLRMM */
                    365: }
                    366:
                    367: void
1.1       nicm      368: tty_raw(struct tty *tty, const char *s)
                    369: {
1.150     nicm      370:        ssize_t n, slen;
                    371:        u_int   i;
                    372:
                    373:        slen = strlen(s);
                    374:        for (i = 0; i < 5; i++) {
                    375:                n = write(tty->fd, s, slen);
                    376:                if (n >= 0) {
                    377:                        s += n;
                    378:                        slen -= n;
                    379:                        if (slen == 0)
                    380:                                break;
                    381:                } else if (n == -1 && errno != EAGAIN)
                    382:                        break;
                    383:                usleep(100);
                    384:        }
1.1       nicm      385: }
                    386:
                    387: void
                    388: tty_putcode(struct tty *tty, enum tty_code_code code)
                    389: {
                    390:        tty_puts(tty, tty_term_string(tty->term, code));
                    391: }
                    392:
                    393: void
                    394: tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
                    395: {
                    396:        if (a < 0)
                    397:                return;
                    398:        tty_puts(tty, tty_term_string1(tty->term, code, a));
                    399: }
                    400:
                    401: void
                    402: tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
                    403: {
                    404:        if (a < 0 || b < 0)
                    405:                return;
                    406:        tty_puts(tty, tty_term_string2(tty->term, code, a, b));
                    407: }
                    408:
                    409: void
1.107     nicm      410: tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
                    411: {
                    412:        if (a != NULL)
                    413:                tty_puts(tty, tty_term_ptr1(tty->term, code, a));
                    414: }
                    415:
                    416: void
1.167     nicm      417: tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
                    418:     const void *b)
1.106     nicm      419: {
                    420:        if (a != NULL && b != NULL)
                    421:                tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
                    422: }
                    423:
1.243     nicm      424: static void
                    425: tty_add(struct tty *tty, const char *buf, size_t len)
                    426: {
1.244     nicm      427:        evbuffer_add(tty->out, buf, len);
                    428:        log_debug("%s: %.*s", tty->path, (int)len, (const char *)buf);
1.243     nicm      429:
                    430:        if (tty_log_fd != -1)
                    431:                write(tty_log_fd, buf, len);
1.244     nicm      432:        if (tty->flags & TTY_STARTED)
                    433:                event_add(&tty->event_out, NULL);
1.243     nicm      434: }
                    435:
1.106     nicm      436: void
1.1       nicm      437: tty_puts(struct tty *tty, const char *s)
                    438: {
1.243     nicm      439:        if (*s != '\0')
                    440:                tty_add(tty, s, strlen(s));
1.1       nicm      441: }
                    442:
                    443: void
                    444: tty_putc(struct tty *tty, u_char ch)
                    445: {
1.90      nicm      446:        const char      *acs;
1.1       nicm      447:
1.90      nicm      448:        if (tty->cell.attr & GRID_ATTR_CHARSET) {
                    449:                acs = tty_acs_get(tty, ch);
1.243     nicm      450:                if (acs != NULL)
                    451:                        tty_add(tty, acs, strlen(acs));
                    452:                else
                    453:                        tty_add(tty, &ch, 1);
                    454:        } else
                    455:                tty_add(tty, &ch, 1);
1.1       nicm      456:
                    457:        if (ch >= 0x20 && ch != 0x7f) {
1.211     nicm      458:                if (tty->cx >= tty->sx) {
1.46      nicm      459:                        tty->cx = 1;
                    460:                        if (tty->cy != tty->rlower)
                    461:                                tty->cy++;
1.211     nicm      462:
                    463:                        /*
                    464:                         * On !xenl terminals, force the cursor position to
                    465:                         * where we think it should be after a line wrap - this
                    466:                         * means it works on sensible terminals as well.
                    467:                         */
                    468:                        if (tty->term->flags & TERM_EARLYWRAP)
                    469:                                tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
1.1       nicm      470:                } else
                    471:                        tty->cx++;
                    472:        }
                    473: }
                    474:
                    475: void
1.147     nicm      476: tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
1.5       nicm      477: {
1.243     nicm      478:        tty_add(tty, buf, len);
1.254     nicm      479:        if (tty->cx + width > tty->sx)
                    480:                tty->cx = tty->cy = UINT_MAX;
                    481:        else
                    482:                tty->cx += width;
1.5       nicm      483: }
                    484:
1.207     nicm      485: static void
1.180     nicm      486: tty_set_italics(struct tty *tty)
                    487: {
                    488:        const char      *s;
                    489:
                    490:        if (tty_term_has(tty->term, TTYC_SITM)) {
1.191     nicm      491:                s = options_get_string(global_options, "default-terminal");
1.180     nicm      492:                if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
                    493:                        tty_putcode(tty, TTYC_SITM);
                    494:                        return;
                    495:                }
                    496:        }
                    497:        tty_putcode(tty, TTYC_SMSO);
                    498: }
                    499:
                    500: void
1.1       nicm      501: tty_set_title(struct tty *tty, const char *title)
                    502: {
1.105     nicm      503:        if (!tty_term_has(tty->term, TTYC_TSL) ||
                    504:            !tty_term_has(tty->term, TTYC_FSL))
1.1       nicm      505:                return;
                    506:
1.105     nicm      507:        tty_putcode(tty, TTYC_TSL);
1.1       nicm      508:        tty_puts(tty, title);
1.105     nicm      509:        tty_putcode(tty, TTYC_FSL);
1.1       nicm      510: }
                    511:
1.208     nicm      512: static void
1.107     nicm      513: tty_force_cursor_colour(struct tty *tty, const char *ccolour)
                    514: {
                    515:        if (*ccolour == '\0')
                    516:                tty_putcode(tty, TTYC_CR);
                    517:        else
1.160     nicm      518:                tty_putcode_ptr1(tty, TTYC_CS, ccolour);
1.138     nicm      519:        free(tty->ccolour);
1.107     nicm      520:        tty->ccolour = xstrdup(ccolour);
                    521: }
                    522:
                    523: void
                    524: tty_update_mode(struct tty *tty, int mode, struct screen *s)
1.1       nicm      525: {
                    526:        int     changed;
                    527:
1.197     nicm      528:        if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
1.107     nicm      529:                tty_force_cursor_colour(tty, s->ccolour);
                    530:
1.1       nicm      531:        if (tty->flags & TTY_NOCURSOR)
                    532:                mode &= ~MODE_CURSOR;
                    533:
                    534:        changed = mode ^ tty->mode;
1.183     nicm      535:        if (changed & MODE_BLINKING) {
                    536:                if (tty_term_has(tty->term, TTYC_CVVIS))
                    537:                        tty_putcode(tty, TTYC_CVVIS);
                    538:                else
                    539:                        tty_putcode(tty, TTYC_CNORM);
                    540:                changed |= MODE_CURSOR;
                    541:        }
                    542:        if (changed & MODE_CURSOR) {
                    543:                if (mode & MODE_CURSOR)
                    544:                        tty_putcode(tty, TTYC_CNORM);
                    545:                else
1.1       nicm      546:                        tty_putcode(tty, TTYC_CIVIS);
1.108     nicm      547:        }
1.181     nicm      548:        if (s != NULL && tty->cstyle != s->cstyle) {
1.160     nicm      549:                if (tty_term_has(tty->term, TTYC_SS)) {
1.108     nicm      550:                        if (s->cstyle == 0 &&
1.160     nicm      551:                            tty_term_has(tty->term, TTYC_SE))
                    552:                                tty_putcode(tty, TTYC_SE);
1.108     nicm      553:                        else
1.160     nicm      554:                                tty_putcode1(tty, TTYC_SS, s->cstyle);
1.108     nicm      555:                }
                    556:                tty->cstyle = s->cstyle;
1.1       nicm      557:        }
1.195     nicm      558:        if (changed & ALL_MOUSE_MODES) {
1.94      nicm      559:                if (mode & ALL_MOUSE_MODES) {
1.153     nicm      560:                        /*
                    561:                         * Enable the SGR (1006) extension unconditionally, as
1.221     nicm      562:                         * it is safe from misinterpretation.
1.153     nicm      563:                         */
                    564:                        tty_puts(tty, "\033[?1006h");
1.225     nicm      565:                        if (mode & MODE_MOUSE_ALL)
                    566:                                tty_puts(tty, "\033[?1003h");
                    567:                        else if (mode & MODE_MOUSE_BUTTON)
1.94      nicm      568:                                tty_puts(tty, "\033[?1002h");
1.98      nicm      569:                        else if (mode & MODE_MOUSE_STANDARD)
                    570:                                tty_puts(tty, "\033[?1000h");
1.86      nicm      571:                } else {
1.225     nicm      572:                        if (tty->mode & MODE_MOUSE_ALL)
                    573:                                tty_puts(tty, "\033[?1003l");
                    574:                        else if (tty->mode & MODE_MOUSE_BUTTON)
1.94      nicm      575:                                tty_puts(tty, "\033[?1002l");
1.98      nicm      576:                        else if (tty->mode & MODE_MOUSE_STANDARD)
                    577:                                tty_puts(tty, "\033[?1000l");
1.153     nicm      578:                        tty_puts(tty, "\033[?1006l");
1.86      nicm      579:                }
1.115     nicm      580:        }
                    581:        if (changed & MODE_BRACKETPASTE) {
                    582:                if (mode & MODE_BRACKETPASTE)
                    583:                        tty_puts(tty, "\033[?2004h");
                    584:                else
                    585:                        tty_puts(tty, "\033[?2004l");
1.1       nicm      586:        }
                    587:        tty->mode = mode;
                    588: }
                    589:
1.207     nicm      590: static void
1.168     nicm      591: tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
                    592:     enum tty_code_code code1, u_int n)
1.1       nicm      593: {
                    594:        if (tty_term_has(tty->term, code))
                    595:                tty_putcode1(tty, code, n);
                    596:        else {
                    597:                while (n-- > 0)
                    598:                        tty_putcode(tty, code1);
                    599:        }
                    600: }
                    601:
1.207     nicm      602: static void
1.133     nicm      603: tty_repeat_space(struct tty *tty, u_int n)
                    604: {
                    605:        while (n-- > 0)
                    606:                tty_putc(tty, ' ');
                    607: }
                    608:
1.1       nicm      609: /*
1.119     nicm      610:  * Is the region large enough to be worth redrawing once later rather than
                    611:  * probably several times now? Currently yes if it is more than 50% of the
                    612:  * pane.
                    613:  */
1.207     nicm      614: static int
1.194     nicm      615: tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1.119     nicm      616: {
                    617:        struct window_pane      *wp = ctx->wp;
                    618:
                    619:        return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2);
                    620: }
                    621:
                    622: /*
1.176     nicm      623:  * Return if BCE is needed but the terminal doesn't have it - it'll need to be
                    624:  * emulated.
                    625:  */
1.207     nicm      626: static int
1.210     nicm      627: tty_fake_bce(const struct tty *tty, const struct window_pane *wp, u_int bg)
1.176     nicm      628: {
                    629:        struct grid_cell        gc;
                    630:
1.210     nicm      631:        if (tty_term_flag(tty->term, TTYC_BCE))
                    632:                return (0);
                    633:
1.176     nicm      634:        memcpy(&gc, &grid_default_cell, sizeof gc);
1.203     nicm      635:        if (wp != NULL)
                    636:                tty_default_colours(&gc, wp);
1.176     nicm      637:
1.210     nicm      638:        if (bg != 8 || gc.bg != 8)
                    639:                return (1);
                    640:        return (0);
1.176     nicm      641: }
                    642:
                    643: /*
1.1       nicm      644:  * Redraw scroll region using data from screen (already updated). Used when
                    645:  * CSR not supported, or window is a pane that doesn't take up the full
                    646:  * width of the terminal.
                    647:  */
1.207     nicm      648: static void
1.24      nicm      649: tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      650: {
1.14      nicm      651:        struct window_pane      *wp = ctx->wp;
                    652:        struct screen           *s = wp->screen;
1.204     nicm      653:        u_int                    i;
1.1       nicm      654:
                    655:        /*
1.119     nicm      656:         * If region is large, schedule a window redraw. In most cases this is
                    657:         * likely to be followed by some more scrolling.
1.1       nicm      658:         */
1.119     nicm      659:        if (tty_large_region(tty, ctx)) {
1.1       nicm      660:                wp->flags |= PANE_REDRAW;
                    661:                return;
                    662:        }
                    663:
1.14      nicm      664:        if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
                    665:                for (i = ctx->ocy; i < screen_size_y(s); i++)
1.176     nicm      666:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      667:        } else {
1.14      nicm      668:                for (i = ctx->orupper; i <= ctx->orlower; i++)
1.176     nicm      669:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      670:        }
                    671: }
                    672:
                    673: void
1.176     nicm      674: tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
                    675:     u_int oy)
                    676: {
                    677:        tty_draw_line(tty, wp, wp->screen, py, ox, oy);
                    678: }
                    679:
                    680: void
                    681: tty_draw_line(struct tty *tty, const struct window_pane *wp,
                    682:     struct screen *s, u_int py, u_int ox, u_int oy)
1.1       nicm      683: {
1.250     nicm      684:        struct grid_cell         gc, last;
                    685:        u_int                    i, j, sx, width;
                    686:        int                      flags = (tty->flags & TTY_NOCURSOR);
                    687:        char                     buf[512];
                    688:        size_t                   len;
1.1       nicm      689:
1.181     nicm      690:        tty->flags |= TTY_NOCURSOR;
                    691:        tty_update_mode(tty, tty->mode, s);
1.35      nicm      692:
1.214     nicm      693:        tty_region_off(tty);
                    694:        tty_margin_off(tty);
                    695:
1.1       nicm      696:        sx = screen_size_x(s);
1.250     nicm      697:        if (sx > s->grid->linedata[s->grid->hsize + py].cellused)
                    698:                sx = s->grid->linedata[s->grid->hsize + py].cellused;
1.1       nicm      699:        if (sx > tty->sx)
                    700:                sx = tty->sx;
                    701:
1.250     nicm      702:        tty_cursor(tty, ox, oy + py);
                    703:
                    704:        memcpy(&last, &grid_default_cell, sizeof last);
                    705:        len = 0;
                    706:        width = 0;
1.46      nicm      707:
1.1       nicm      708:        for (i = 0; i < sx; i++) {
1.193     nicm      709:                grid_view_get_cell(s->grid, i, py, &gc);
1.250     nicm      710:                if (len != 0 &&
1.251     nicm      711:                    (((~tty->flags & TTY_UTF8) &&
                    712:                    (gc.data.size != 1 ||
                    713:                    *gc.data.data >= 0x7f ||
                    714:                    gc.data.width != 1)) ||
                    715:                    (gc.attr & GRID_ATTR_CHARSET) ||
1.250     nicm      716:                    gc.flags != last.flags ||
                    717:                    gc.attr != last.attr ||
                    718:                    gc.fg != last.fg ||
                    719:                    gc.bg != last.bg ||
                    720:                    (sizeof buf) - len < gc.data.size)) {
                    721:                        tty_attributes(tty, &last, wp);
                    722:                        tty_putn(tty, buf, len, width);
                    723:
                    724:                        len = 0;
                    725:                        width = 0;
                    726:                }
                    727:
                    728:                if (gc.flags & GRID_FLAG_SELECTED)
                    729:                        screen_select_cell(s, &last, &gc);
                    730:                else
                    731:                        memcpy(&last, &gc, sizeof last);
1.251     nicm      732:                if (((~tty->flags & TTY_UTF8) &&
                    733:                    (gc.data.size != 1 ||
                    734:                    *gc.data.data >= 0x7f ||
                    735:                    gc.data.width != 1)) ||
                    736:                    (gc.attr & GRID_ATTR_CHARSET)) {
1.250     nicm      737:                        tty_attributes(tty, &last, wp);
1.251     nicm      738:                        if (~tty->flags & TTY_UTF8) {
                    739:                                for (j = 0; j < gc.data.width; j++)
                    740:                                        tty_putc(tty, '_');
                    741:                        } else {
                    742:                                for (j = 0; j < gc.data.size; j++)
                    743:                                        tty_putc(tty, gc.data.data[j]);
                    744:                        }
1.250     nicm      745:                } else {
                    746:                        memcpy(buf + len, gc.data.data, gc.data.size);
                    747:                        len += gc.data.size;
                    748:                        width += gc.data.width;
                    749:                }
                    750:        }
                    751:        if (len != 0) {
                    752:                tty_attributes(tty, &last, wp);
                    753:                tty_putn(tty, buf, len, width);
1.1       nicm      754:        }
                    755:
1.181     nicm      756:        if (sx < tty->sx) {
1.210     nicm      757:                tty_default_attributes(tty, wp, 8);
1.181     nicm      758:
                    759:                tty_cursor(tty, ox + sx, oy + py);
                    760:                if (sx != screen_size_x(s) &&
                    761:                    ox + screen_size_x(s) >= tty->sx &&
                    762:                    tty_term_has(tty->term, TTYC_EL) &&
1.210     nicm      763:                    !tty_fake_bce(tty, wp, 8))
1.181     nicm      764:                        tty_putcode(tty, TTYC_EL);
                    765:                else
                    766:                        tty_repeat_space(tty, screen_size_x(s) - sx);
1.35      nicm      767:        }
1.1       nicm      768:
1.181     nicm      769:        tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1.107     nicm      770:        tty_update_mode(tty, tty->mode, s);
1.15      nicm      771: }
                    772:
1.201     nicm      773: static int
1.182     nicm      774: tty_client_ready(struct client *c, struct window_pane *wp)
                    775: {
                    776:        if (c->session == NULL || c->tty.term == NULL)
                    777:                return (0);
1.244     nicm      778:        if (c->flags & (CLIENT_REDRAW|CLIENT_SUSPENDED))
1.182     nicm      779:                return (0);
                    780:        if (c->tty.flags & TTY_FREEZE)
                    781:                return (0);
                    782:        if (c->session->curw->window != wp->window)
                    783:                return (0);
                    784:        return (1);
                    785: }
                    786:
1.15      nicm      787: void
1.182     nicm      788: tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
                    789:     struct tty_ctx *ctx)
1.15      nicm      790: {
                    791:        struct window_pane      *wp = ctx->wp;
                    792:        struct client           *c;
                    793:
1.75      nicm      794:        /* wp can be NULL if updating the screen but not the terminal. */
1.15      nicm      795:        if (wp == NULL)
                    796:                return;
                    797:
                    798:        if (wp->window->flags & WINDOW_REDRAW || wp->flags & PANE_REDRAW)
                    799:                return;
1.129     nicm      800:        if (!window_pane_visible(wp) || wp->flags & PANE_DROP)
1.15      nicm      801:                return;
                    802:
1.178     nicm      803:        TAILQ_FOREACH(c, &clients, entry) {
1.182     nicm      804:                if (!tty_client_ready(c, wp))
1.15      nicm      805:                        continue;
                    806:
1.139     nicm      807:                ctx->xoff = wp->xoff;
                    808:                ctx->yoff = wp->yoff;
                    809:                if (status_at_line(c) == 0)
                    810:                        ctx->yoff++;
1.113     nicm      811:
1.139     nicm      812:                cmdfn(&c->tty, ctx);
1.1       nicm      813:        }
                    814: }
                    815:
                    816: void
1.24      nicm      817: tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      818: {
1.77      nicm      819:        struct window_pane      *wp = ctx->wp;
1.1       nicm      820:
1.210     nicm      821:        if (!tty_pane_full_width(tty, ctx) ||
                    822:            tty_fake_bce(tty, wp, ctx->bg) ||
                    823:            (!tty_term_has(tty->term, TTYC_ICH) &&
                    824:            !tty_term_has(tty->term, TTYC_ICH1))) {
1.176     nicm      825:                tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
1.1       nicm      826:                return;
                    827:        }
                    828:
1.210     nicm      829:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      830:
1.77      nicm      831:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm      832:
1.206     nicm      833:        tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1.1       nicm      834: }
                    835:
                    836: void
1.24      nicm      837: tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      838: {
1.77      nicm      839:        struct window_pane      *wp = ctx->wp;
1.1       nicm      840:
1.210     nicm      841:        if (!tty_pane_full_width(tty, ctx) ||
                    842:            tty_fake_bce(tty, wp, ctx->bg) ||
1.26      nicm      843:            (!tty_term_has(tty->term, TTYC_DCH) &&
                    844:            !tty_term_has(tty->term, TTYC_DCH1))) {
1.176     nicm      845:                tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
1.1       nicm      846:                return;
                    847:        }
                    848:
1.210     nicm      849:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      850:
1.77      nicm      851:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm      852:
1.206     nicm      853:        tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1.146     nicm      854: }
                    855:
                    856: void
                    857: tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
                    858: {
                    859:        u_int   i;
                    860:
1.176     nicm      861:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.146     nicm      862:
                    863:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                    864:
1.210     nicm      865:        if (tty_term_has(tty->term, TTYC_ECH) &&
                    866:            !tty_fake_bce(tty, ctx->wp, ctx->bg))
1.146     nicm      867:                tty_putcode1(tty, TTYC_ECH, ctx->num);
                    868:        else {
                    869:                for (i = 0; i < ctx->num; i++)
                    870:                        tty_putc(tty, ' ');
                    871:        }
1.1       nicm      872: }
                    873:
                    874: void
1.24      nicm      875: tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      876: {
1.210     nicm      877:        if (!tty_pane_full_width(tty, ctx) ||
                    878:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.77      nicm      879:            !tty_term_has(tty->term, TTYC_CSR) ||
1.72      nicm      880:            !tty_term_has(tty->term, TTYC_IL1)) {
1.14      nicm      881:                tty_redraw_region(tty, ctx);
1.1       nicm      882:                return;
                    883:        }
                    884:
1.210     nicm      885:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm      886:
1.77      nicm      887:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      888:        tty_margin_off(tty);
1.77      nicm      889:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      890:
1.12      nicm      891:        tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1.1       nicm      892: }
                    893:
                    894: void
1.24      nicm      895: tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      896: {
1.210     nicm      897:        if (!tty_pane_full_width(tty, ctx) ||
                    898:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.72      nicm      899:            !tty_term_has(tty->term, TTYC_CSR) ||
                    900:            !tty_term_has(tty->term, TTYC_DL1)) {
1.14      nicm      901:                tty_redraw_region(tty, ctx);
1.1       nicm      902:                return;
                    903:        }
                    904:
1.210     nicm      905:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm      906:
1.77      nicm      907:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      908:        tty_margin_off(tty);
1.77      nicm      909:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      910:
1.12      nicm      911:        tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1.1       nicm      912: }
                    913:
                    914: void
1.24      nicm      915: tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      916: {
1.77      nicm      917:        struct window_pane      *wp = ctx->wp;
1.12      nicm      918:        struct screen           *s = wp->screen;
1.229     nicm      919:        u_int                    sx = screen_size_x(s);
1.1       nicm      920:
1.210     nicm      921:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      922:
1.77      nicm      923:        tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.41      nicm      924:
1.210     nicm      925:        if (tty_pane_full_width(tty, ctx) &&
                    926:            !tty_fake_bce(tty, wp, ctx->bg) &&
1.176     nicm      927:            tty_term_has(tty->term, TTYC_EL))
1.1       nicm      928:                tty_putcode(tty, TTYC_EL);
1.133     nicm      929:        else
1.229     nicm      930:                tty_repeat_space(tty, sx);
1.1       nicm      931: }
                    932:
                    933: void
1.24      nicm      934: tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      935: {
1.77      nicm      936:        struct window_pane      *wp = ctx->wp;
1.12      nicm      937:        struct screen           *s = wp->screen;
1.229     nicm      938:        u_int                    sx = screen_size_x(s);
1.1       nicm      939:
1.210     nicm      940:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      941:
1.41      nicm      942:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                    943:
1.176     nicm      944:        if (tty_pane_full_width(tty, ctx) &&
1.210     nicm      945:            tty_term_has(tty->term, TTYC_EL) &&
                    946:            !tty_fake_bce(tty, wp, ctx->bg))
1.1       nicm      947:                tty_putcode(tty, TTYC_EL);
1.133     nicm      948:        else
1.229     nicm      949:                tty_repeat_space(tty, sx - ctx->ocx);
1.1       nicm      950: }
                    951:
                    952: void
1.24      nicm      953: tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      954: {
1.210     nicm      955:        struct window_pane      *wp = ctx->wp;
                    956:
                    957:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      958:
1.210     nicm      959:        if (ctx->xoff == 0 &&
                    960:            tty_term_has(tty->term, TTYC_EL1) &&
1.238     nicm      961:            !tty_fake_bce(tty, ctx->wp, ctx->bg)) {
                    962:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      963:                tty_putcode(tty, TTYC_EL1);
1.238     nicm      964:        } else {
                    965:                tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm      966:                tty_repeat_space(tty, ctx->ocx + 1);
1.238     nicm      967:        }
1.1       nicm      968: }
                    969:
                    970: void
1.24      nicm      971: tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      972: {
1.56      nicm      973:        if (ctx->ocy != ctx->orupper)
                    974:                return;
                    975:
1.210     nicm      976:        if (!tty_pane_full_width(tty, ctx) ||
                    977:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.70      nicm      978:            !tty_term_has(tty->term, TTYC_CSR) ||
                    979:            !tty_term_has(tty->term, TTYC_RI)) {
1.14      nicm      980:                tty_redraw_region(tty, ctx);
1.1       nicm      981:                return;
                    982:        }
                    983:
1.176     nicm      984:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.77      nicm      985:
1.56      nicm      986:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      987:        tty_margin_off(tty);
1.56      nicm      988:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1.77      nicm      989:
1.56      nicm      990:        tty_putcode(tty, TTYC_RI);
1.1       nicm      991: }
                    992:
                    993: void
1.24      nicm      994: tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      995: {
1.77      nicm      996:        struct window_pane      *wp = ctx->wp;
1.1       nicm      997:
1.56      nicm      998:        if (ctx->ocy != ctx->orlower)
                    999:                return;
                   1000:
1.212     nicm     1001:        if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.210     nicm     1002:            tty_fake_bce(tty, wp, ctx->bg) ||
1.1       nicm     1003:            !tty_term_has(tty->term, TTYC_CSR)) {
1.236     nicm     1004:                tty_redraw_region(tty, ctx);
1.1       nicm     1005:                return;
                   1006:        }
1.52      nicm     1007:
1.176     nicm     1008:        tty_attributes(tty, &grid_default_cell, wp);
1.77      nicm     1009:
1.56      nicm     1010:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.212     nicm     1011:        tty_margin_pane(tty, ctx);
                   1012:
                   1013:        /*
                   1014:         * If we want to wrap a pane, the cursor needs to be exactly on the
                   1015:         * right of the region. But if the pane isn't on the right, it may be
                   1016:         * off the edge - if so, move the cursor back to the right.
                   1017:         */
                   1018:        if (ctx->xoff + ctx->ocx > tty->rright)
1.216     nicm     1019:                tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1.212     nicm     1020:        else
                   1021:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.77      nicm     1022:
1.56      nicm     1023:        tty_putc(tty, '\n');
1.240     nicm     1024: }
                   1025:
                   1026: void
                   1027: tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
                   1028: {
                   1029:        struct window_pane      *wp = ctx->wp;
                   1030:        u_int                    i;
                   1031:
                   1032:        if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
                   1033:            tty_fake_bce(tty, wp, ctx->bg) ||
                   1034:            !tty_term_has(tty->term, TTYC_CSR)) {
                   1035:                tty_redraw_region(tty, ctx);
                   1036:                return;
                   1037:        }
                   1038:
                   1039:        tty_attributes(tty, &grid_default_cell, wp);
                   1040:
                   1041:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1042:        tty_margin_pane(tty, ctx);
                   1043:
                   1044:        if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1.241     nicm     1045:                tty_cursor(tty, tty->rright, tty->rlower);
1.240     nicm     1046:                for (i = 0; i < ctx->num; i++)
                   1047:                        tty_putc(tty, '\n');
                   1048:        } else
                   1049:                tty_putcode1(tty, TTYC_INDN, ctx->num);
1.1       nicm     1050: }
                   1051:
                   1052: void
1.24      nicm     1053: tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1054: {
1.77      nicm     1055:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1056:        struct screen           *s = wp->screen;
1.204     nicm     1057:        u_int                    i, j;
1.229     nicm     1058:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1059:
1.210     nicm     1060:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1061:
1.229     nicm     1062:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1063:        tty_margin_off(tty);
1.39      nicm     1064:
1.176     nicm     1065:        if (tty_pane_full_width(tty, ctx) &&
1.248     nicm     1066:            ctx->yoff + wp->sy >= tty->sy - 1 &&
1.229     nicm     1067:            status_at_line(tty->client) <= 0 &&
                   1068:            tty_term_has(tty->term, TTYC_ED)) {
                   1069:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1070:                tty_putcode(tty, TTYC_ED);
                   1071:        } else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1072:            tty_term_has(tty->term, TTYC_EL) &&
                   1073:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1074:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1075:                tty_putcode(tty, TTYC_EL);
1.229     nicm     1076:                if (ctx->ocy != sy - 1) {
1.41      nicm     1077:                        tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
1.229     nicm     1078:                        for (i = ctx->ocy + 1; i < sy; i++) {
1.1       nicm     1079:                                tty_putcode(tty, TTYC_EL);
1.229     nicm     1080:                                if (i == sy - 1)
1.1       nicm     1081:                                        continue;
                   1082:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1083:                                tty->cy++;
                   1084:                        }
                   1085:                }
                   1086:        } else {
1.229     nicm     1087:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1088:                tty_repeat_space(tty, sx - ctx->ocx);
                   1089:                for (j = ctx->ocy + 1; j < sy; j++) {
1.41      nicm     1090:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1091:                        tty_repeat_space(tty, sx);
1.1       nicm     1092:                }
                   1093:        }
                   1094: }
                   1095:
                   1096: void
1.24      nicm     1097: tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1098: {
1.77      nicm     1099:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1100:        struct screen           *s = wp->screen;
1.204     nicm     1101:        u_int                    i, j;
1.229     nicm     1102:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1103:
1.227     nicm     1104:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1105:
1.229     nicm     1106:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1107:        tty_margin_off(tty);
1.39      nicm     1108:
1.230     nicm     1109:        if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1110:            tty_term_has(tty->term, TTYC_EL) &&
                   1111:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1112:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1113:                for (i = 0; i < ctx->ocy; i++) {
1.1       nicm     1114:                        tty_putcode(tty, TTYC_EL);
                   1115:                        tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1116:                        tty->cy++;
                   1117:                }
                   1118:        } else {
1.229     nicm     1119:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1120:                for (j = 0; j < ctx->ocy; j++) {
1.41      nicm     1121:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1122:                        tty_repeat_space(tty, sx);
1.1       nicm     1123:                }
                   1124:        }
1.229     nicm     1125:        tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm     1126:        tty_repeat_space(tty, ctx->ocx + 1);
1.1       nicm     1127: }
                   1128:
                   1129: void
1.24      nicm     1130: tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1131: {
1.77      nicm     1132:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1133:        struct screen           *s = wp->screen;
1.204     nicm     1134:        u_int                    i, j;
1.229     nicm     1135:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1136:
1.210     nicm     1137:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1138:
1.229     nicm     1139:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1140:        tty_margin_off(tty);
1.39      nicm     1141:
1.176     nicm     1142:        if (tty_pane_full_width(tty, ctx) &&
1.229     nicm     1143:            status_at_line(tty->client) <= 0 &&
                   1144:            tty_term_has(tty->term, TTYC_ED)) {
                   1145:                tty_cursor_pane(tty, ctx, 0, 0);
                   1146:                tty_putcode(tty, TTYC_ED);
1.230     nicm     1147:        } else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1148:            tty_term_has(tty->term, TTYC_EL) &&
                   1149:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1150:                tty_cursor_pane(tty, ctx, 0, 0);
                   1151:                for (i = 0; i < sy; i++) {
1.1       nicm     1152:                        tty_putcode(tty, TTYC_EL);
1.229     nicm     1153:                        if (i != sy - 1) {
1.1       nicm     1154:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1155:                                tty->cy++;
                   1156:                        }
                   1157:                }
                   1158:        } else {
1.229     nicm     1159:                tty_cursor_pane(tty, ctx, 0, 0);
                   1160:                for (j = 0; j < sy; j++) {
1.41      nicm     1161:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1162:                        tty_repeat_space(tty, sx);
1.1       nicm     1163:                }
1.4       nicm     1164:        }
                   1165: }
                   1166:
                   1167: void
1.24      nicm     1168: tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1.4       nicm     1169: {
1.12      nicm     1170:        struct window_pane      *wp = ctx->wp;
                   1171:        struct screen           *s = wp->screen;
                   1172:        u_int                    i, j;
1.4       nicm     1173:
1.176     nicm     1174:        tty_attributes(tty, &grid_default_cell, wp);
1.4       nicm     1175:
1.39      nicm     1176:        tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
1.214     nicm     1177:        tty_margin_off(tty);
1.4       nicm     1178:
                   1179:        for (j = 0; j < screen_size_y(s); j++) {
1.41      nicm     1180:                tty_cursor_pane(tty, ctx, 0, j);
1.4       nicm     1181:                for (i = 0; i < screen_size_x(s); i++)
                   1182:                        tty_putc(tty, 'E');
1.1       nicm     1183:        }
                   1184: }
                   1185:
                   1186: void
1.24      nicm     1187: tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1188: {
1.222     nicm     1189:        if (ctx->xoff + ctx->ocx > tty->sx - 1 && ctx->ocy == ctx->orlower) {
                   1190:                if (tty_pane_full_width(tty, ctx))
                   1191:                        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1192:                else
                   1193:                        tty_margin_off(tty);
                   1194:        }
1.46      nicm     1195:
1.253     nicm     1196:        tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1197:
1.237     nicm     1198:        tty_cell(tty, ctx->cell, ctx->wp);
1.239     nicm     1199: }
                   1200:
                   1201: void
                   1202: tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
                   1203: {
1.253     nicm     1204:        tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1.239     nicm     1205:
                   1206:        tty_attributes(tty, ctx->cell, ctx->wp);
                   1207:        tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
1.106     nicm     1208: }
                   1209:
                   1210: void
                   1211: tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
                   1212: {
                   1213:        char    *buf;
                   1214:        size_t   off;
                   1215:
                   1216:        if (!tty_term_has(tty->term, TTYC_MS))
                   1217:                return;
                   1218:
                   1219:        off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
                   1220:        buf = xmalloc(off);
                   1221:
                   1222:        b64_ntop(ctx->ptr, ctx->num, buf, off);
                   1223:        tty_putcode_ptr2(tty, TTYC_MS, "", buf);
                   1224:
1.138     nicm     1225:        free(buf);
1.100     nicm     1226: }
                   1227:
                   1228: void
                   1229: tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
                   1230: {
                   1231:        u_int    i;
                   1232:        u_char  *str = ctx->ptr;
                   1233:
                   1234:        for (i = 0; i < ctx->num; i++)
                   1235:                tty_putc(tty, str[i]);
1.242     nicm     1236:        tty_invalidate(tty);
1.1       nicm     1237: }
                   1238:
1.207     nicm     1239: static void
1.176     nicm     1240: tty_cell(struct tty *tty, const struct grid_cell *gc,
                   1241:     const struct window_pane *wp)
1.1       nicm     1242: {
1.193     nicm     1243:        u_int   i;
1.1       nicm     1244:
                   1245:        /* Skip last character if terminal is stupid. */
1.211     nicm     1246:        if ((tty->term->flags & TERM_EARLYWRAP) &&
                   1247:            tty->cy == tty->sy - 1 &&
                   1248:            tty->cx == tty->sx - 1)
1.1       nicm     1249:                return;
                   1250:
                   1251:        /* If this is a padding character, do nothing. */
                   1252:        if (gc->flags & GRID_FLAG_PADDING)
                   1253:                return;
                   1254:
                   1255:        /* Set the attributes. */
1.176     nicm     1256:        tty_attributes(tty, gc, wp);
1.1       nicm     1257:
1.147     nicm     1258:        /* Get the cell and if ASCII write with putc to do ACS translation. */
1.193     nicm     1259:        if (gc->data.size == 1) {
                   1260:                if (*gc->data.data < 0x20 || *gc->data.data == 0x7f)
1.1       nicm     1261:                        return;
1.193     nicm     1262:                tty_putc(tty, *gc->data.data);
1.1       nicm     1263:                return;
                   1264:        }
                   1265:
1.147     nicm     1266:        /* If not UTF-8, write _. */
1.1       nicm     1267:        if (!(tty->flags & TTY_UTF8)) {
1.193     nicm     1268:                for (i = 0; i < gc->data.width; i++)
1.1       nicm     1269:                        tty_putc(tty, '_');
                   1270:                return;
                   1271:        }
                   1272:
1.147     nicm     1273:        /* Write the data. */
1.193     nicm     1274:        tty_putn(tty, gc->data.data, gc->data.size, gc->data.width);
1.1       nicm     1275: }
                   1276:
                   1277: void
                   1278: tty_reset(struct tty *tty)
                   1279: {
                   1280:        struct grid_cell        *gc = &tty->cell;
                   1281:
1.228     nicm     1282:        if (!grid_cells_equal(gc, &grid_default_cell)) {
                   1283:                if ((gc->attr & GRID_ATTR_CHARSET) && tty_use_acs(tty))
                   1284:                        tty_putcode(tty, TTYC_RMACS);
                   1285:                tty_putcode(tty, TTYC_SGR0);
                   1286:                memcpy(gc, &grid_default_cell, sizeof *gc);
                   1287:        }
1.1       nicm     1288:
1.228     nicm     1289:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   1290:        tty->last_wp = -1;
1.242     nicm     1291: }
                   1292:
                   1293: static void
                   1294: tty_invalidate(struct tty *tty)
                   1295: {
                   1296:        memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
                   1297:
                   1298:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   1299:        tty->last_wp = -1;
                   1300:
                   1301:        tty->cx = tty->cy = UINT_MAX;
                   1302:
                   1303:        tty->rupper = tty->rleft = UINT_MAX;
                   1304:        tty->rlower = tty->rright = UINT_MAX;
                   1305:
                   1306:        if (tty->flags & TTY_STARTED) {
                   1307:                tty_putcode(tty, TTYC_SGR0);
                   1308:
                   1309:                tty->mode = ALL_MODES;
                   1310:                tty_update_mode(tty, MODE_CURSOR, NULL);
                   1311:
                   1312:                tty_cursor(tty, 0, 0);
                   1313:                tty_region_off(tty);
                   1314:                tty_margin_off(tty);
                   1315:        } else
                   1316:                tty->mode = MODE_CURSOR;
1.1       nicm     1317: }
                   1318:
1.214     nicm     1319: /* Turn off margin. */
                   1320: void
                   1321: tty_region_off(struct tty *tty)
                   1322: {
                   1323:        tty_region(tty, 0, tty->sy - 1);
                   1324: }
                   1325:
1.40      nicm     1326: /* Set region inside pane. */
1.208     nicm     1327: static void
1.196     nicm     1328: tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
                   1329:     u_int rlower)
1.1       nicm     1330: {
1.113     nicm     1331:        tty_region(tty, ctx->yoff + rupper, ctx->yoff + rlower);
1.39      nicm     1332: }
                   1333:
1.40      nicm     1334: /* Set region at absolute position. */
1.214     nicm     1335: static void
1.40      nicm     1336: tty_region(struct tty *tty, u_int rupper, u_int rlower)
1.39      nicm     1337: {
                   1338:        if (tty->rlower == rlower && tty->rupper == rupper)
                   1339:                return;
1.1       nicm     1340:        if (!tty_term_has(tty->term, TTYC_CSR))
                   1341:                return;
1.39      nicm     1342:
                   1343:        tty->rupper = rupper;
                   1344:        tty->rlower = rlower;
1.55      nicm     1345:
                   1346:        /*
                   1347:         * Some terminals (such as PuTTY) do not correctly reset the cursor to
                   1348:         * 0,0 if it is beyond the last column (they do not reset their wrap
                   1349:         * flag so further output causes a line feed). As a workaround, do an
                   1350:         * explicit move to 0 first.
                   1351:         */
                   1352:        if (tty->cx >= tty->sx)
                   1353:                tty_cursor(tty, 0, tty->cy);
1.42      nicm     1354:
1.39      nicm     1355:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.249     nicm     1356:        tty->cx = tty->cy = UINT_MAX;
1.212     nicm     1357: }
                   1358:
1.214     nicm     1359: /* Turn off margin. */
                   1360: void
                   1361: tty_margin_off(struct tty *tty)
                   1362: {
                   1363:        tty_margin(tty, 0, tty->sx - 1);
                   1364: }
                   1365:
1.212     nicm     1366: /* Set margin inside pane. */
                   1367: static void
                   1368: tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
                   1369: {
                   1370:        tty_margin(tty, ctx->xoff, ctx->xoff + ctx->wp->sx - 1);
                   1371: }
                   1372:
                   1373: /* Set margin at absolute position. */
1.214     nicm     1374: static void
1.212     nicm     1375: tty_margin(struct tty *tty, u_int rleft, u_int rright)
                   1376: {
                   1377:        char s[64];
                   1378:
                   1379:        if (!tty_use_margin(tty))
                   1380:                return;
                   1381:        if (tty->rleft == rleft && tty->rright == rright)
                   1382:                return;
                   1383:
1.232     nicm     1384:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.231     nicm     1385:
1.212     nicm     1386:        tty->rleft = rleft;
                   1387:        tty->rright = rright;
                   1388:
1.232     nicm     1389:        if (rleft == 0 && rright == tty->sx - 1)
                   1390:                snprintf(s, sizeof s, "\033[s");
                   1391:        else
                   1392:                snprintf(s, sizeof s, "\033[%u;%us", rleft + 1, rright + 1);
1.212     nicm     1393:        tty_puts(tty, s);
1.249     nicm     1394:        tty->cx = tty->cy = UINT_MAX;
1.253     nicm     1395: }
                   1396:
                   1397: /*
                   1398:  * Move the cursor, unless it would wrap itself when the next character is
                   1399:  * printed.
                   1400:  */
                   1401: static void
                   1402: tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
                   1403:     u_int cx, u_int cy)
                   1404: {
                   1405:        if (!tty_pane_full_width(tty, ctx) ||
                   1406:            (tty->term->flags & TERM_EARLYWRAP) ||
                   1407:            ctx->xoff + cx != 0 ||
                   1408:            ctx->yoff + cy != tty->cy + 1 ||
1.254     nicm     1409:            tty->cx < tty->sx ||
                   1410:            tty->cy == tty->rlower)
1.253     nicm     1411:                tty_cursor_pane(tty, ctx, cx, cy);
                   1412:        else
                   1413:                log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
1.1       nicm     1414: }
                   1415:
1.42      nicm     1416: /* Move cursor inside pane. */
1.208     nicm     1417: static void
1.41      nicm     1418: tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
                   1419: {
1.113     nicm     1420:        tty_cursor(tty, ctx->xoff + cx, ctx->yoff + cy);
1.41      nicm     1421: }
                   1422:
1.42      nicm     1423: /* Move cursor to absolute position. */
1.41      nicm     1424: void
                   1425: tty_cursor(struct tty *tty, u_int cx, u_int cy)
1.1       nicm     1426: {
1.42      nicm     1427:        struct tty_term *term = tty->term;
                   1428:        u_int            thisx, thisy;
                   1429:        int              change;
1.77      nicm     1430:
1.42      nicm     1431:        if (cx > tty->sx - 1)
                   1432:                cx = tty->sx - 1;
                   1433:
                   1434:        thisx = tty->cx;
                   1435:        thisy = tty->cy;
                   1436:
                   1437:        /* No change. */
                   1438:        if (cx == thisx && cy == thisy)
                   1439:                return;
                   1440:
1.43      nicm     1441:        /* Very end of the line, just use absolute movement. */
                   1442:        if (thisx > tty->sx - 1)
                   1443:                goto absolute;
                   1444:
1.42      nicm     1445:        /* Move to home position (0, 0). */
                   1446:        if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
                   1447:                tty_putcode(tty, TTYC_HOME);
                   1448:                goto out;
                   1449:        }
                   1450:
                   1451:        /* Zero on the next line. */
1.48      nicm     1452:        if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower) {
1.1       nicm     1453:                tty_putc(tty, '\r');
1.42      nicm     1454:                tty_putc(tty, '\n');
                   1455:                goto out;
                   1456:        }
                   1457:
1.45      nicm     1458:        /* Moving column or row. */
1.42      nicm     1459:        if (cy == thisy) {
1.45      nicm     1460:                /*
                   1461:                 * Moving column only, row staying the same.
                   1462:                 */
                   1463:
1.42      nicm     1464:                /* To left edge. */
1.202     nicm     1465:                if (cx == 0) {
1.42      nicm     1466:                        tty_putc(tty, '\r');
                   1467:                        goto out;
                   1468:                }
                   1469:
                   1470:                /* One to the left. */
                   1471:                if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
                   1472:                        tty_putcode(tty, TTYC_CUB1);
                   1473:                        goto out;
                   1474:                }
                   1475:
                   1476:                /* One to the right. */
                   1477:                if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
                   1478:                        tty_putcode(tty, TTYC_CUF1);
                   1479:                        goto out;
                   1480:                }
                   1481:
                   1482:                /* Calculate difference. */
                   1483:                change = thisx - cx;    /* +ve left, -ve right */
                   1484:
                   1485:                /*
                   1486:                 * Use HPA if change is larger than absolute, otherwise move
                   1487:                 * the cursor with CUB/CUF.
                   1488:                 */
1.87      nicm     1489:                if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
1.42      nicm     1490:                        tty_putcode1(tty, TTYC_HPA, cx);
                   1491:                        goto out;
                   1492:                } else if (change > 0 && tty_term_has(term, TTYC_CUB)) {
1.202     nicm     1493:                        if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
                   1494:                                tty_putcode(tty, TTYC_CUB1);
                   1495:                                tty_putcode(tty, TTYC_CUB1);
                   1496:                                goto out;
                   1497:                        }
1.42      nicm     1498:                        tty_putcode1(tty, TTYC_CUB, change);
                   1499:                        goto out;
                   1500:                } else if (change < 0 && tty_term_has(term, TTYC_CUF)) {
                   1501:                        tty_putcode1(tty, TTYC_CUF, -change);
                   1502:                        goto out;
                   1503:                }
1.45      nicm     1504:        } else if (cx == thisx) {
                   1505:                /*
                   1506:                 * Moving row only, column staying the same.
                   1507:                 */
1.42      nicm     1508:
                   1509:                /* One above. */
1.77      nicm     1510:                if (thisy != tty->rupper &&
1.42      nicm     1511:                    cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
                   1512:                        tty_putcode(tty, TTYC_CUU1);
                   1513:                        goto out;
                   1514:                }
                   1515:
                   1516:                /* One below. */
1.49      nicm     1517:                if (thisy != tty->rlower &&
1.42      nicm     1518:                    cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
                   1519:                        tty_putcode(tty, TTYC_CUD1);
                   1520:                        goto out;
                   1521:                }
                   1522:
                   1523:                /* Calculate difference. */
                   1524:                change = thisy - cy;    /* +ve up, -ve down */
                   1525:
                   1526:                /*
1.77      nicm     1527:                 * Try to use VPA if change is larger than absolute or if this
                   1528:                 * change would cross the scroll region, otherwise use CUU/CUD.
1.42      nicm     1529:                 */
1.87      nicm     1530:                if ((u_int) abs(change) > cy ||
1.42      nicm     1531:                    (change < 0 && cy - change > tty->rlower) ||
1.44      nicm     1532:                    (change > 0 && cy - change < tty->rupper)) {
                   1533:                            if (tty_term_has(term, TTYC_VPA)) {
                   1534:                                    tty_putcode1(tty, TTYC_VPA, cy);
                   1535:                                    goto out;
                   1536:                            }
1.42      nicm     1537:                } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
                   1538:                        tty_putcode1(tty, TTYC_CUU, change);
                   1539:                        goto out;
                   1540:                } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
                   1541:                        tty_putcode1(tty, TTYC_CUD, -change);
                   1542:                        goto out;
                   1543:                }
                   1544:        }
                   1545:
1.43      nicm     1546: absolute:
1.42      nicm     1547:        /* Absolute movement. */
                   1548:        tty_putcode2(tty, TTYC_CUP, cy, cx);
                   1549:
                   1550: out:
                   1551:        tty->cx = cx;
                   1552:        tty->cy = cy;
1.1       nicm     1553: }
                   1554:
                   1555: void
1.176     nicm     1556: tty_attributes(struct tty *tty, const struct grid_cell *gc,
                   1557:     const struct window_pane *wp)
1.1       nicm     1558: {
1.63      nicm     1559:        struct grid_cell        *tc = &tty->cell, gc2;
1.255   ! nicm     1560:        int                      changed;
1.61      nicm     1561:
1.228     nicm     1562:        /* Ignore cell if it is the same as the last one. */
                   1563:        if (wp != NULL &&
                   1564:            (int)wp->id == tty->last_wp &&
                   1565:            ~(wp->window->flags & WINDOW_STYLECHANGED) &&
                   1566:            gc->attr == tty->last_cell.attr &&
                   1567:            gc->fg == tty->last_cell.fg &&
                   1568:            gc->bg == tty->last_cell.bg)
                   1569:                return;
                   1570:        tty->last_wp = (wp != NULL ? (int)wp->id : -1);
                   1571:        memcpy(&tty->last_cell, gc, sizeof tty->last_cell);
                   1572:
                   1573:        /* Copy cell and update default colours. */
1.85      nicm     1574:        memcpy(&gc2, gc, sizeof gc2);
1.203     nicm     1575:        if (wp != NULL)
                   1576:                tty_default_colours(&gc2, wp);
1.63      nicm     1577:
1.18      nicm     1578:        /*
                   1579:         * If no setab, try to use the reverse attribute as a best-effort for a
                   1580:         * non-default background. This is a bit of a hack but it doesn't do
                   1581:         * any serious harm and makes a couple of applications happier.
                   1582:         */
                   1583:        if (!tty_term_has(tty->term, TTYC_SETAB)) {
1.85      nicm     1584:                if (gc2.attr & GRID_ATTR_REVERSE) {
                   1585:                        if (gc2.fg != 7 && gc2.fg != 8)
1.64      nicm     1586:                                gc2.attr &= ~GRID_ATTR_REVERSE;
1.18      nicm     1587:                } else {
1.85      nicm     1588:                        if (gc2.bg != 0 && gc2.bg != 8)
1.64      nicm     1589:                                gc2.attr |= GRID_ATTR_REVERSE;
1.18      nicm     1590:                }
                   1591:        }
1.1       nicm     1592:
1.85      nicm     1593:        /* Fix up the colours if necessary. */
1.219     nicm     1594:        tty_check_fg(tty, wp, &gc2);
                   1595:        tty_check_bg(tty, wp, &gc2);
1.85      nicm     1596:
1.64      nicm     1597:        /* If any bits are being cleared, reset everything. */
1.85      nicm     1598:        if (tc->attr & ~gc2.attr)
1.64      nicm     1599:                tty_reset(tty);
                   1600:
                   1601:        /*
                   1602:         * Set the colours. This may call tty_reset() (so it comes next) and
                   1603:         * may add to (NOT remove) the desired attributes by changing new_attr.
                   1604:         */
1.85      nicm     1605:        tty_colours(tty, &gc2);
1.64      nicm     1606:
1.1       nicm     1607:        /* Filter out attribute bits already set. */
1.85      nicm     1608:        changed = gc2.attr & ~tc->attr;
                   1609:        tc->attr = gc2.attr;
1.1       nicm     1610:
                   1611:        /* Set the attributes. */
                   1612:        if (changed & GRID_ATTR_BRIGHT)
                   1613:                tty_putcode(tty, TTYC_BOLD);
                   1614:        if (changed & GRID_ATTR_DIM)
                   1615:                tty_putcode(tty, TTYC_DIM);
1.180     nicm     1616:        if (changed & GRID_ATTR_ITALICS)
                   1617:                tty_set_italics(tty);
1.1       nicm     1618:        if (changed & GRID_ATTR_UNDERSCORE)
                   1619:                tty_putcode(tty, TTYC_SMUL);
                   1620:        if (changed & GRID_ATTR_BLINK)
                   1621:                tty_putcode(tty, TTYC_BLINK);
                   1622:        if (changed & GRID_ATTR_REVERSE) {
                   1623:                if (tty_term_has(tty->term, TTYC_REV))
                   1624:                        tty_putcode(tty, TTYC_REV);
                   1625:                else if (tty_term_has(tty->term, TTYC_SMSO))
                   1626:                        tty_putcode(tty, TTYC_SMSO);
                   1627:        }
                   1628:        if (changed & GRID_ATTR_HIDDEN)
                   1629:                tty_putcode(tty, TTYC_INVIS);
1.255   ! nicm     1630:        if (changed & GRID_ATTR_STRIKETHROUGH)
        !          1631:                tty_putcode(tty, TTYC_SMXX);
1.90      nicm     1632:        if ((changed & GRID_ATTR_CHARSET) && tty_use_acs(tty))
1.1       nicm     1633:                tty_putcode(tty, TTYC_SMACS);
                   1634: }
                   1635:
1.207     nicm     1636: static void
1.85      nicm     1637: tty_colours(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1638: {
1.61      nicm     1639:        struct grid_cell        *tc = &tty->cell;
1.204     nicm     1640:        int                      have_ax;
1.61      nicm     1641:
                   1642:        /* No changes? Nothing is necessary. */
1.204     nicm     1643:        if (gc->fg == tc->fg && gc->bg == tc->bg)
1.63      nicm     1644:                return;
1.1       nicm     1645:
1.61      nicm     1646:        /*
                   1647:         * Is either the default colour? This is handled specially because the
                   1648:         * best solution might be to reset both colours to default, in which
                   1649:         * case if only one is default need to fall onward to set the other
                   1650:         * colour.
                   1651:         */
1.204     nicm     1652:        if (gc->fg == 8 || gc->bg == 8) {
1.61      nicm     1653:                /*
                   1654:                 * If don't have AX but do have op, send sgr0 (op can't
                   1655:                 * actually be used because it is sometimes the same as sgr0
                   1656:                 * and sometimes isn't). This resets both colours to default.
                   1657:                 *
                   1658:                 * Otherwise, try to set the default colour only as needed.
                   1659:                 */
1.174     nicm     1660:                have_ax = tty_term_flag(tty->term, TTYC_AX);
1.61      nicm     1661:                if (!have_ax && tty_term_has(tty->term, TTYC_OP))
                   1662:                        tty_reset(tty);
                   1663:                else {
1.204     nicm     1664:                        if (gc->fg == 8 && tc->fg != 8) {
1.61      nicm     1665:                                if (have_ax)
                   1666:                                        tty_puts(tty, "\033[39m");
1.204     nicm     1667:                                else if (tc->fg != 7)
1.61      nicm     1668:                                        tty_putcode1(tty, TTYC_SETAF, 7);
                   1669:                                tc->fg = 8;
                   1670:                        }
1.204     nicm     1671:                        if (gc->bg == 8 && tc->bg != 8) {
1.77      nicm     1672:                                if (have_ax)
1.61      nicm     1673:                                        tty_puts(tty, "\033[49m");
1.204     nicm     1674:                                else if (tc->bg != 0)
1.61      nicm     1675:                                        tty_putcode1(tty, TTYC_SETAB, 0);
                   1676:                                tc->bg = 8;
                   1677:                        }
                   1678:                }
                   1679:        }
1.1       nicm     1680:
1.61      nicm     1681:        /* Set the foreground colour. */
1.204     nicm     1682:        if (gc->fg != 8 && gc->fg != tc->fg)
1.85      nicm     1683:                tty_colours_fg(tty, gc);
1.1       nicm     1684:
1.61      nicm     1685:        /*
                   1686:         * Set the background colour. This must come after the foreground as
                   1687:         * tty_colour_fg() can call tty_reset().
                   1688:         */
1.204     nicm     1689:        if (gc->bg != 8 && gc->bg != tc->bg)
1.73      nicm     1690:                tty_colours_bg(tty, gc);
1.1       nicm     1691: }
                   1692:
1.219     nicm     1693: static void
                   1694: tty_check_fg(struct tty *tty, const struct window_pane *wp,
                   1695:     struct grid_cell *gc)
1.85      nicm     1696: {
1.204     nicm     1697:        u_char  r, g, b;
                   1698:        u_int   colours;
1.223     nicm     1699:        int     c;
1.85      nicm     1700:
1.219     nicm     1701:        /* Perform substitution if this pane has a palette */
                   1702:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1703:            (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1704:                gc->fg = c;
1.219     nicm     1705:
1.199     nicm     1706:        /* Is this a 24-bit colour? */
1.204     nicm     1707:        if (gc->fg & COLOUR_FLAG_RGB) {
1.199     nicm     1708:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1709:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1710:                        colour_split_rgb(gc->fg, &r, &g, &b);
                   1711:                        gc->fg = colour_find_rgb(r, g, b);
                   1712:                } else
1.200     nicm     1713:                        return;
1.199     nicm     1714:        }
1.224     nicm     1715:
                   1716:        /* How many colours does this terminal have? */
                   1717:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1718:                colours = 256;
                   1719:        else
                   1720:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1721:
1.85      nicm     1722:        /* Is this a 256-colour colour? */
1.204     nicm     1723:        if (gc->fg & COLOUR_FLAG_256) {
1.85      nicm     1724:                /* And not a 256 colour mode? */
1.224     nicm     1725:                if (colours != 256) {
1.85      nicm     1726:                        gc->fg = colour_256to16(gc->fg);
                   1727:                        if (gc->fg & 8) {
                   1728:                                gc->fg &= 7;
1.175     nicm     1729:                                if (colours >= 16)
                   1730:                                        gc->fg += 90;
                   1731:                                else
                   1732:                                        gc->attr |= GRID_ATTR_BRIGHT;
1.85      nicm     1733:                        } else
                   1734:                                gc->attr &= ~GRID_ATTR_BRIGHT;
                   1735:                }
                   1736:                return;
                   1737:        }
                   1738:
                   1739:        /* Is this an aixterm colour? */
                   1740:        if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
                   1741:                gc->fg -= 90;
                   1742:                gc->attr |= GRID_ATTR_BRIGHT;
                   1743:        }
                   1744: }
                   1745:
1.219     nicm     1746: static void
                   1747: tty_check_bg(struct tty *tty, const struct window_pane *wp,
                   1748:     struct grid_cell *gc)
1.85      nicm     1749: {
1.204     nicm     1750:        u_char  r, g, b;
                   1751:        u_int   colours;
1.223     nicm     1752:        int     c;
1.85      nicm     1753:
1.219     nicm     1754:        /* Perform substitution if this pane has a palette */
                   1755:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1756:            (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1757:                gc->bg = c;
1.219     nicm     1758:
1.199     nicm     1759:        /* Is this a 24-bit colour? */
1.204     nicm     1760:        if (gc->bg & COLOUR_FLAG_RGB) {
1.199     nicm     1761:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1762:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1763:                        colour_split_rgb(gc->bg, &r, &g, &b);
                   1764:                        gc->bg = colour_find_rgb(r, g, b);
                   1765:                } else
1.200     nicm     1766:                        return;
1.199     nicm     1767:        }
1.224     nicm     1768:
                   1769:        /* How many colours does this terminal have? */
                   1770:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1771:                colours = 256;
                   1772:        else
                   1773:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1774:
1.85      nicm     1775:        /* Is this a 256-colour colour? */
1.204     nicm     1776:        if (gc->bg & COLOUR_FLAG_256) {
1.85      nicm     1777:                /*
                   1778:                 * And not a 256 colour mode? Translate to 16-colour
                   1779:                 * palette. Bold background doesn't exist portably, so just
                   1780:                 * discard the bold bit if set.
                   1781:                 */
1.224     nicm     1782:                if (colours != 256) {
1.85      nicm     1783:                        gc->bg = colour_256to16(gc->bg);
1.175     nicm     1784:                        if (gc->bg & 8) {
1.85      nicm     1785:                                gc->bg &= 7;
1.175     nicm     1786:                                if (colours >= 16)
                   1787:                                        gc->fg += 90;
                   1788:                        }
1.85      nicm     1789:                }
                   1790:                return;
                   1791:        }
                   1792:
                   1793:        /* Is this an aixterm colour? */
1.175     nicm     1794:        if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
1.85      nicm     1795:                gc->bg -= 90;
                   1796: }
                   1797:
1.207     nicm     1798: static void
1.85      nicm     1799: tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1800: {
1.61      nicm     1801:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1802:        char                     s[32];
1.1       nicm     1803:
1.204     nicm     1804:        /* Is this a 24-bit or 256-colour colour? */
                   1805:        if (gc->fg & COLOUR_FLAG_RGB ||
                   1806:            gc->fg & COLOUR_FLAG_256) {
                   1807:                if (tty_try_colour(tty, gc->fg, "38") == 0)
1.61      nicm     1808:                        goto save_fg;
1.199     nicm     1809:                /* Should not get here, already converted in tty_check_fg. */
1.85      nicm     1810:                return;
1.1       nicm     1811:        }
                   1812:
1.79      nicm     1813:        /* Is this an aixterm bright colour? */
1.204     nicm     1814:        if (gc->fg >= 90 && gc->fg <= 97) {
                   1815:                xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
1.85      nicm     1816:                tty_puts(tty, s);
                   1817:                goto save_fg;
1.79      nicm     1818:        }
                   1819:
1.61      nicm     1820:        /* Otherwise set the foreground colour. */
1.204     nicm     1821:        tty_putcode1(tty, TTYC_SETAF, gc->fg);
1.61      nicm     1822:
1.77      nicm     1823: save_fg:
1.61      nicm     1824:        /* Save the new values in the terminal current cell. */
1.204     nicm     1825:        tc->fg = gc->fg;
1.1       nicm     1826: }
                   1827:
1.207     nicm     1828: static void
1.73      nicm     1829: tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1830: {
1.61      nicm     1831:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1832:        char                     s[32];
1.1       nicm     1833:
1.204     nicm     1834:        /* Is this a 24-bit or 256-colour colour? */
                   1835:        if (gc->bg & COLOUR_FLAG_RGB ||
                   1836:            gc->bg & COLOUR_FLAG_256) {
                   1837:                if (tty_try_colour(tty, gc->bg, "48") == 0)
1.61      nicm     1838:                        goto save_bg;
1.199     nicm     1839:                /* Should not get here, already converted in tty_check_bg. */
1.85      nicm     1840:                return;
1.79      nicm     1841:        }
                   1842:
                   1843:        /* Is this an aixterm bright colour? */
1.204     nicm     1844:        if (gc->bg >= 90 && gc->bg <= 97) {
                   1845:                xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
1.175     nicm     1846:                tty_puts(tty, s);
                   1847:                goto save_bg;
1.1       nicm     1848:        }
                   1849:
1.61      nicm     1850:        /* Otherwise set the background colour. */
1.204     nicm     1851:        tty_putcode1(tty, TTYC_SETAB, gc->bg);
1.61      nicm     1852:
                   1853: save_bg:
                   1854:        /* Save the new values in the terminal current cell. */
1.204     nicm     1855:        tc->bg = gc->bg;
1.61      nicm     1856: }
                   1857:
1.207     nicm     1858: static int
1.204     nicm     1859: tty_try_colour(struct tty *tty, int colour, const char *type)
1.61      nicm     1860: {
1.204     nicm     1861:        u_char  r, g, b;
1.61      nicm     1862:        char    s[32];
                   1863:
1.204     nicm     1864:        if (colour & COLOUR_FLAG_256) {
                   1865:                /*
                   1866:                 * If the user has specified -2 to the client, setaf and setab
                   1867:                 * may not work (or they may not want to use them), so send the
                   1868:                 * usual sequence.
                   1869:                 */
                   1870:                if (tty->term_flags & TERM_256COLOURS)
                   1871:                        goto fallback_256;
1.189     nicm     1872:
1.204     nicm     1873:                /*
                   1874:                 * If the terminfo entry has 256 colours and setaf and setab
                   1875:                 * exist, assume that they work correctly.
                   1876:                 */
                   1877:                if (tty->term->flags & TERM_256COLOURS) {
                   1878:                        if (*type == '3') {
                   1879:                                if (!tty_term_has(tty->term, TTYC_SETAF))
                   1880:                                        goto fallback_256;
                   1881:                                tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
                   1882:                        } else {
                   1883:                                if (!tty_term_has(tty->term, TTYC_SETAB))
                   1884:                                        goto fallback_256;
                   1885:                                tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
                   1886:                        }
                   1887:                        return (0);
1.188     nicm     1888:                }
1.204     nicm     1889:                goto fallback_256;
                   1890:        }
                   1891:
                   1892:        if (colour & COLOUR_FLAG_RGB) {
                   1893:                if (!tty_term_flag(tty->term, TTYC_TC))
                   1894:                        return (-1);
                   1895:
                   1896:                colour_split_rgb(colour & 0xffffff, &r, &g, &b);
                   1897:                xsnprintf(s, sizeof s, "\033[%s;2;%hhu;%hhu;%hhum", type,
                   1898:                    r, g, b);
                   1899:                tty_puts(tty, s);
1.165     nicm     1900:                return (0);
                   1901:        }
1.61      nicm     1902:
1.165     nicm     1903:        return (-1);
1.188     nicm     1904:
1.204     nicm     1905: fallback_256:
                   1906:        xsnprintf(s, sizeof s, "\033[%s;5;%dm", type, colour & 0xff);
1.188     nicm     1907:        tty_puts(tty, s);
                   1908:        return (0);
1.176     nicm     1909: }
                   1910:
1.207     nicm     1911: static void
1.176     nicm     1912: tty_default_colours(struct grid_cell *gc, const struct window_pane *wp)
                   1913: {
1.203     nicm     1914:        struct window           *w = wp->window;
                   1915:        struct options          *oo = w->options;
                   1916:        const struct grid_cell  *agc, *pgc, *wgc;
1.223     nicm     1917:        int                      c;
1.203     nicm     1918:
                   1919:        if (w->flags & WINDOW_STYLECHANGED) {
                   1920:                w->flags &= ~WINDOW_STYLECHANGED;
                   1921:                agc = options_get_style(oo, "window-active-style");
                   1922:                memcpy(&w->active_style, agc, sizeof w->active_style);
                   1923:                wgc = options_get_style(oo, "window-style");
                   1924:                memcpy(&w->style, wgc, sizeof w->style);
                   1925:        } else {
                   1926:                agc = &w->active_style;
                   1927:                wgc = &w->style;
                   1928:        }
1.176     nicm     1929:        pgc = &wp->colgc;
                   1930:
1.204     nicm     1931:        if (gc->fg == 8) {
                   1932:                if (pgc->fg != 8)
1.176     nicm     1933:                        gc->fg = pgc->fg;
1.204     nicm     1934:                else if (wp == w->active && agc->fg != 8)
1.176     nicm     1935:                        gc->fg = agc->fg;
1.204     nicm     1936:                else
1.176     nicm     1937:                        gc->fg = wgc->fg;
1.219     nicm     1938:
1.223     nicm     1939:                if (gc->fg != 8 &&
                   1940:                    (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1941:                        gc->fg = c;
1.176     nicm     1942:        }
                   1943:
1.204     nicm     1944:        if (gc->bg == 8) {
                   1945:                if (pgc->bg != 8)
1.176     nicm     1946:                        gc->bg = pgc->bg;
1.204     nicm     1947:                else if (wp == w->active && agc->bg != 8)
1.176     nicm     1948:                        gc->bg = agc->bg;
1.204     nicm     1949:                else
1.176     nicm     1950:                        gc->bg = wgc->bg;
1.219     nicm     1951:
1.223     nicm     1952:                if (gc->bg != 8 &&
                   1953:                    (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1954:                        gc->bg = c;
1.176     nicm     1955:        }
1.210     nicm     1956: }
                   1957:
                   1958: static void
                   1959: tty_default_attributes(struct tty *tty, const struct window_pane *wp, u_int bg)
                   1960: {
                   1961:        static struct grid_cell gc;
                   1962:
                   1963:        memcpy(&gc, &grid_default_cell, sizeof gc);
                   1964:        gc.bg = bg;
                   1965:        tty_attributes(tty, &gc, wp);
1.1       nicm     1966: }