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Annotation of src/usr.bin/tmux/tty.c, Revision 1.229

1.229   ! nicm        1: /* $OpenBSD: tty.c,v 1.228 2017/02/06 19:45:23 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:
1.208     nicm       37: static void    tty_init_termios(int, struct termios *, struct bufferevent *);
                     38:
1.207     nicm       39: static void    tty_read_callback(struct bufferevent *, void *);
                     40: static void    tty_error_callback(struct bufferevent *, short, void *);
1.66      nicm       41:
1.207     nicm       42: static int     tty_client_ready(struct client *, struct window_pane *);
1.201     nicm       43:
1.207     nicm       44: static void    tty_set_italics(struct tty *);
                     45: static int     tty_try_colour(struct tty *, int, const char *);
1.208     nicm       46: static void    tty_force_cursor_colour(struct tty *, const char *);
                     47: static void    tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
                     48:                    u_int);
1.207     nicm       49:
                     50: static void    tty_colours(struct tty *, const struct grid_cell *);
1.219     nicm       51: static void    tty_check_fg(struct tty *, const struct window_pane *,
                     52:                    struct grid_cell *);
                     53: static void    tty_check_bg(struct tty *, const struct window_pane *,
                     54:                    struct grid_cell *);
1.207     nicm       55: static void    tty_colours_fg(struct tty *, const struct grid_cell *);
                     56: static void    tty_colours_bg(struct tty *, const struct grid_cell *);
                     57:
1.208     nicm       58: static void    tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
                     59:                    u_int);
1.214     nicm       60: static void    tty_region(struct tty *, u_int, u_int);
1.212     nicm       61: static void    tty_margin_pane(struct tty *, const struct tty_ctx *);
1.214     nicm       62: static void    tty_margin(struct tty *, u_int, u_int);
1.207     nicm       63: static int     tty_large_region(struct tty *, const struct tty_ctx *);
1.210     nicm       64: static int     tty_fake_bce(const struct tty *, const struct window_pane *,
                     65:                    u_int);
1.207     nicm       66: static void    tty_redraw_region(struct tty *, const struct tty_ctx *);
1.229   ! nicm       67: static void    tty_clear_area(struct tty *, const struct tty_ctx *ctx, u_int,
        !            68:                    u_int, u_int, u_int);
1.207     nicm       69: static void    tty_emulate_repeat(struct tty *, enum tty_code_code,
                     70:                    enum tty_code_code, u_int);
                     71: static void    tty_repeat_space(struct tty *, u_int);
                     72: static void    tty_cell(struct tty *, const struct grid_cell *,
                     73:                    const struct window_pane *);
                     74: static void    tty_default_colours(struct grid_cell *,
                     75:                    const struct window_pane *);
1.210     nicm       76: static void    tty_default_attributes(struct tty *, const struct window_pane *,
                     77:                    u_int);
1.1       nicm       78:
1.90      nicm       79: #define tty_use_acs(tty) \
1.131     nicm       80:        (tty_term_has((tty)->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
1.212     nicm       81: #define tty_use_margin(tty) \
1.214     nicm       82:        ((tty)->term_type == TTY_VT420)
1.90      nicm       83:
1.229   ! nicm       84: #define tty_pane_full_width(tty, ctx)                                  \
1.132     nicm       85:        ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
                     86:
1.192     nicm       87: void
                     88: tty_create_log(void)
                     89: {
                     90:        char    name[64];
                     91:
                     92:        xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
                     93:
                     94:        tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
                     95:        if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
                     96:                fatal("fcntl failed");
                     97: }
                     98:
1.185     nicm       99: int
1.136     nicm      100: tty_init(struct tty *tty, struct client *c, int fd, char *term)
1.1       nicm      101: {
1.30      nicm      102:        char    *path;
                    103:
1.185     nicm      104:        if (!isatty(fd))
                    105:                return (-1);
                    106:
1.30      nicm      107:        memset(tty, 0, sizeof *tty);
1.22      nicm      108:
1.9       nicm      109:        if (term == NULL || *term == '\0')
1.220     nicm      110:                tty->term_name = xstrdup("unknown");
1.1       nicm      111:        else
1.220     nicm      112:                tty->term_name = xstrdup(term);
1.30      nicm      113:        tty->fd = fd;
1.136     nicm      114:        tty->client = c;
1.30      nicm      115:
                    116:        if ((path = ttyname(fd)) == NULL)
1.185     nicm      117:                return (-1);
1.30      nicm      118:        tty->path = xstrdup(path);
1.108     nicm      119:        tty->cstyle = 0;
1.107     nicm      120:        tty->ccolour = xstrdup("");
1.30      nicm      121:
1.1       nicm      122:        tty->flags = 0;
1.212     nicm      123:
1.1       nicm      124:        tty->term_flags = 0;
1.212     nicm      125:        tty->term_type = TTY_UNKNOWN;
1.185     nicm      126:
                    127:        return (0);
1.31      nicm      128: }
                    129:
1.88      nicm      130: int
1.31      nicm      131: tty_resize(struct tty *tty)
                    132: {
                    133:        struct winsize  ws;
1.88      nicm      134:        u_int           sx, sy;
1.31      nicm      135:
                    136:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
1.88      nicm      137:                sx = ws.ws_col;
                    138:                if (sx == 0)
                    139:                        sx = 80;
                    140:                sy = ws.ws_row;
                    141:                if (sy == 0)
                    142:                        sy = 24;
                    143:        } else {
                    144:                sx = 80;
                    145:                sy = 24;
1.31      nicm      146:        }
1.114     nicm      147:        if (!tty_set_size(tty, sx, sy))
1.88      nicm      148:                return (0);
1.31      nicm      149:
                    150:        tty->cx = UINT_MAX;
                    151:        tty->cy = UINT_MAX;
                    152:
1.212     nicm      153:        tty->rupper = tty->rleft = UINT_MAX;
                    154:        tty->rlower = tty->rright = UINT_MAX;
1.88      nicm      155:
                    156:        /*
                    157:         * If the terminal has been started, reset the actual scroll region and
                    158:         * cursor position, as this may not have happened.
                    159:         */
                    160:        if (tty->flags & TTY_STARTED) {
                    161:                tty_cursor(tty, 0, 0);
1.214     nicm      162:                tty_region_off(tty);
                    163:                tty_margin_off(tty);
1.88      nicm      164:        }
                    165:
1.114     nicm      166:        return (1);
                    167: }
                    168:
                    169: int
1.212     nicm      170: tty_set_size(struct tty *tty, u_int sx, u_int sy)
                    171: {
1.114     nicm      172:        if (sx == tty->sx && sy == tty->sy)
                    173:                return (0);
                    174:        tty->sx = sx;
                    175:        tty->sy = sy;
1.88      nicm      176:        return (1);
1.1       nicm      177: }
                    178:
                    179: int
1.166     nicm      180: tty_open(struct tty *tty, char **cause)
1.1       nicm      181: {
1.220     nicm      182:        tty->term = tty_term_find(tty->term_name, tty->fd, cause);
1.21      nicm      183:        if (tty->term == NULL) {
                    184:                tty_close(tty);
                    185:                return (-1);
                    186:        }
                    187:        tty->flags |= TTY_OPENED;
1.1       nicm      188:
1.149     nicm      189:        tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_TIMER);
1.1       nicm      190:
1.196     nicm      191:        tty->event = bufferevent_new(tty->fd, tty_read_callback, NULL,
                    192:            tty_error_callback, tty);
1.1       nicm      193:
                    194:        tty_start_tty(tty);
                    195:
1.148     nicm      196:        tty_keys_build(tty);
1.1       nicm      197:
                    198:        return (0);
                    199: }
                    200:
1.207     nicm      201: static void
1.194     nicm      202: tty_read_callback(__unused struct bufferevent *bufev, void *data)
1.67      nicm      203: {
                    204:        struct tty      *tty = data;
                    205:
                    206:        while (tty_keys_next(tty))
                    207:                ;
                    208: }
                    209:
1.207     nicm      210: static void
1.194     nicm      211: tty_error_callback(__unused struct bufferevent *bufev, __unused short what,
                    212:     __unused void *data)
1.66      nicm      213: {
                    214: }
                    215:
1.208     nicm      216: static void
1.127     nicm      217: tty_init_termios(int fd, struct termios *orig_tio, struct bufferevent *bufev)
1.1       nicm      218: {
1.128     nicm      219:        struct termios  tio;
1.33      nicm      220:
1.127     nicm      221:        if (fd == -1 || tcgetattr(fd, orig_tio) != 0)
1.33      nicm      222:                return;
1.1       nicm      223:
1.127     nicm      224:        setblocking(fd, 0);
1.34      nicm      225:
1.127     nicm      226:        if (bufev != NULL)
                    227:                bufferevent_enable(bufev, EV_READ|EV_WRITE);
1.66      nicm      228:
1.127     nicm      229:        memcpy(&tio, orig_tio, sizeof tio);
1.1       nicm      230:        tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
                    231:        tio.c_iflag |= IGNBRK;
                    232:        tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
                    233:        tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
1.169     jsg       234:            ECHOPRT|ECHOKE|ISIG);
1.1       nicm      235:        tio.c_cc[VMIN] = 1;
1.60      deraadt   236:        tio.c_cc[VTIME] = 0;
1.127     nicm      237:        if (tcsetattr(fd, TCSANOW, &tio) == 0)
                    238:                tcflush(fd, TCIOFLUSH);
                    239: }
                    240:
                    241: void
                    242: tty_start_tty(struct tty *tty)
                    243: {
                    244:        tty_init_termios(tty->fd, &tty->tio, tty->event);
1.1       nicm      245:
1.10      nicm      246:        tty_putcode(tty, TTYC_SMCUP);
1.1       nicm      247:
1.25      nicm      248:        tty_putcode(tty, TTYC_SGR0);
                    249:        memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
                    250:
1.228     nicm      251:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                    252:        tty->last_wp = -1;
                    253:
1.76      nicm      254:        tty_putcode(tty, TTYC_RMKX);
1.90      nicm      255:        if (tty_use_acs(tty))
                    256:                tty_putcode(tty, TTYC_ENACS);
1.1       nicm      257:        tty_putcode(tty, TTYC_CLEAR);
                    258:
                    259:        tty_putcode(tty, TTYC_CNORM);
                    260:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      261:                tty_puts(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.121     nicm      262:
1.189     nicm      263:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.191     nicm      264:                if (options_get_number(global_options, "focus-events")) {
1.162     nicm      265:                        tty->flags |= TTY_FOCUS;
                    266:                        tty_puts(tty, "\033[?1004h");
                    267:                }
1.212     nicm      268:                tty_puts(tty, "\033[c");
1.162     nicm      269:        }
1.1       nicm      270:
                    271:        tty->cx = UINT_MAX;
                    272:        tty->cy = UINT_MAX;
                    273:
1.212     nicm      274:        tty->rupper = tty->rleft = UINT_MAX;
                    275:        tty->rlower = tty->rright = UINT_MAX;
1.1       nicm      276:
                    277:        tty->mode = MODE_CURSOR;
1.20      nicm      278:
                    279:        tty->flags |= TTY_STARTED;
1.107     nicm      280:
                    281:        tty_force_cursor_colour(tty, "");
1.177     nicm      282:
                    283:        tty->mouse_drag_flag = 0;
                    284:        tty->mouse_drag_update = NULL;
                    285:        tty->mouse_drag_release = NULL;
1.128     nicm      286: }
                    287:
                    288: void
1.1       nicm      289: tty_stop_tty(struct tty *tty)
                    290: {
                    291:        struct winsize  ws;
                    292:
1.20      nicm      293:        if (!(tty->flags & TTY_STARTED))
                    294:                return;
                    295:        tty->flags &= ~TTY_STARTED;
                    296:
1.66      nicm      297:        bufferevent_disable(tty->event, EV_READ|EV_WRITE);
                    298:
1.1       nicm      299:        /*
                    300:         * Be flexible about error handling and try not kill the server just
                    301:         * because the fd is invalid. Things like ssh -t can easily leave us
                    302:         * with a dead tty.
                    303:         */
                    304:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
                    305:                return;
                    306:        if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
                    307:                return;
                    308:
                    309:        tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
1.90      nicm      310:        if (tty_use_acs(tty))
                    311:                tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
1.1       nicm      312:        tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
                    313:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
                    314:        tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
1.160     nicm      315:        if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) {
                    316:                if (tty_term_has(tty->term, TTYC_SE))
                    317:                        tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
1.109     nicm      318:                else
1.160     nicm      319:                        tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
1.108     nicm      320:        }
1.173     nicm      321:        if (tty->mode & MODE_BRACKETPASTE)
                    322:                tty_raw(tty, "\033[?2004l");
1.107     nicm      323:        tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
1.1       nicm      324:
                    325:        tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
                    326:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      327:                tty_raw(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.151     nicm      328:
1.189     nicm      329:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.162     nicm      330:                if (tty->flags & TTY_FOCUS) {
                    331:                        tty->flags &= ~TTY_FOCUS;
1.172     nicm      332:                        tty_raw(tty, "\033[?1004l");
1.162     nicm      333:                }
                    334:        }
1.10      nicm      335:
1.212     nicm      336:        if (tty_use_margin(tty))
                    337:                tty_raw(tty, "\033[?69l"); /* DECLRMM */
1.10      nicm      338:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
1.150     nicm      339:
                    340:        setblocking(tty->fd, 1);
1.1       nicm      341: }
                    342:
                    343: void
1.20      nicm      344: tty_close(struct tty *tty)
1.1       nicm      345: {
1.123     nicm      346:        if (event_initialized(&tty->key_timer))
                    347:                evtimer_del(&tty->key_timer);
1.20      nicm      348:        tty_stop_tty(tty);
1.1       nicm      349:
1.21      nicm      350:        if (tty->flags & TTY_OPENED) {
1.66      nicm      351:                bufferevent_free(tty->event);
                    352:
1.21      nicm      353:                tty_term_free(tty->term);
                    354:                tty_keys_free(tty);
                    355:
                    356:                tty->flags &= ~TTY_OPENED;
                    357:        }
1.1       nicm      358:
1.21      nicm      359:        if (tty->fd != -1) {
                    360:                close(tty->fd);
                    361:                tty->fd = -1;
                    362:        }
1.1       nicm      363: }
                    364:
                    365: void
1.20      nicm      366: tty_free(struct tty *tty)
1.1       nicm      367: {
1.20      nicm      368:        tty_close(tty);
1.1       nicm      369:
1.138     nicm      370:        free(tty->ccolour);
1.190     nicm      371:        free(tty->path);
1.220     nicm      372:        free(tty->term_name);
1.1       nicm      373: }
                    374:
                    375: void
1.212     nicm      376: tty_set_type(struct tty *tty, int type)
                    377: {
                    378:        tty->term_type = type;
                    379:
                    380:        if (tty_use_margin(tty))
                    381:                tty_puts(tty, "\033[?69h"); /* DECLRMM */
                    382: }
                    383:
                    384: void
1.1       nicm      385: tty_raw(struct tty *tty, const char *s)
                    386: {
1.150     nicm      387:        ssize_t n, slen;
                    388:        u_int   i;
                    389:
                    390:        slen = strlen(s);
                    391:        for (i = 0; i < 5; i++) {
                    392:                n = write(tty->fd, s, slen);
                    393:                if (n >= 0) {
                    394:                        s += n;
                    395:                        slen -= n;
                    396:                        if (slen == 0)
                    397:                                break;
                    398:                } else if (n == -1 && errno != EAGAIN)
                    399:                        break;
                    400:                usleep(100);
                    401:        }
1.1       nicm      402: }
                    403:
                    404: void
                    405: tty_putcode(struct tty *tty, enum tty_code_code code)
                    406: {
                    407:        tty_puts(tty, tty_term_string(tty->term, code));
                    408: }
                    409:
                    410: void
                    411: tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
                    412: {
                    413:        if (a < 0)
                    414:                return;
                    415:        tty_puts(tty, tty_term_string1(tty->term, code, a));
                    416: }
                    417:
                    418: void
                    419: tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
                    420: {
                    421:        if (a < 0 || b < 0)
                    422:                return;
                    423:        tty_puts(tty, tty_term_string2(tty->term, code, a, b));
                    424: }
                    425:
                    426: void
1.107     nicm      427: tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
                    428: {
                    429:        if (a != NULL)
                    430:                tty_puts(tty, tty_term_ptr1(tty->term, code, a));
                    431: }
                    432:
                    433: void
1.167     nicm      434: tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
                    435:     const void *b)
1.106     nicm      436: {
                    437:        if (a != NULL && b != NULL)
                    438:                tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
                    439: }
                    440:
                    441: void
1.1       nicm      442: tty_puts(struct tty *tty, const char *s)
                    443: {
                    444:        if (*s == '\0')
                    445:                return;
1.66      nicm      446:        bufferevent_write(tty->event, s, strlen(s));
1.1       nicm      447:
1.192     nicm      448:        if (tty_log_fd != -1)
                    449:                write(tty_log_fd, s, strlen(s));
1.1       nicm      450: }
                    451:
                    452: void
                    453: tty_putc(struct tty *tty, u_char ch)
                    454: {
1.90      nicm      455:        const char      *acs;
1.1       nicm      456:
1.90      nicm      457:        if (tty->cell.attr & GRID_ATTR_CHARSET) {
                    458:                acs = tty_acs_get(tty, ch);
                    459:                if (acs != NULL)
                    460:                        bufferevent_write(tty->event, acs, strlen(acs));
                    461:                else
                    462:                        bufferevent_write(tty->event, &ch, 1);
                    463:        } else
                    464:                bufferevent_write(tty->event, &ch, 1);
1.1       nicm      465:
                    466:        if (ch >= 0x20 && ch != 0x7f) {
1.211     nicm      467:                if (tty->cx >= tty->sx) {
1.46      nicm      468:                        tty->cx = 1;
                    469:                        if (tty->cy != tty->rlower)
                    470:                                tty->cy++;
1.211     nicm      471:
                    472:                        /*
                    473:                         * On !xenl terminals, force the cursor position to
                    474:                         * where we think it should be after a line wrap - this
                    475:                         * means it works on sensible terminals as well.
                    476:                         */
                    477:                        if (tty->term->flags & TERM_EARLYWRAP)
                    478:                                tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
1.1       nicm      479:                } else
                    480:                        tty->cx++;
                    481:        }
                    482:
1.192     nicm      483:        if (tty_log_fd != -1)
                    484:                write(tty_log_fd, &ch, 1);
1.1       nicm      485: }
                    486:
                    487: void
1.147     nicm      488: tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
1.5       nicm      489: {
1.147     nicm      490:        bufferevent_write(tty->event, buf, len);
1.192     nicm      491:        if (tty_log_fd != -1)
                    492:                write(tty_log_fd, buf, len);
1.147     nicm      493:        tty->cx += width;
1.5       nicm      494: }
                    495:
1.207     nicm      496: static void
1.180     nicm      497: tty_set_italics(struct tty *tty)
                    498: {
                    499:        const char      *s;
                    500:
                    501:        if (tty_term_has(tty->term, TTYC_SITM)) {
1.191     nicm      502:                s = options_get_string(global_options, "default-terminal");
1.180     nicm      503:                if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
                    504:                        tty_putcode(tty, TTYC_SITM);
                    505:                        return;
                    506:                }
                    507:        }
                    508:        tty_putcode(tty, TTYC_SMSO);
                    509: }
                    510:
                    511: void
1.1       nicm      512: tty_set_title(struct tty *tty, const char *title)
                    513: {
1.105     nicm      514:        if (!tty_term_has(tty->term, TTYC_TSL) ||
                    515:            !tty_term_has(tty->term, TTYC_FSL))
1.1       nicm      516:                return;
                    517:
1.105     nicm      518:        tty_putcode(tty, TTYC_TSL);
1.1       nicm      519:        tty_puts(tty, title);
1.105     nicm      520:        tty_putcode(tty, TTYC_FSL);
1.1       nicm      521: }
                    522:
1.208     nicm      523: static void
1.107     nicm      524: tty_force_cursor_colour(struct tty *tty, const char *ccolour)
                    525: {
                    526:        if (*ccolour == '\0')
                    527:                tty_putcode(tty, TTYC_CR);
                    528:        else
1.160     nicm      529:                tty_putcode_ptr1(tty, TTYC_CS, ccolour);
1.138     nicm      530:        free(tty->ccolour);
1.107     nicm      531:        tty->ccolour = xstrdup(ccolour);
                    532: }
                    533:
                    534: void
                    535: tty_update_mode(struct tty *tty, int mode, struct screen *s)
1.1       nicm      536: {
                    537:        int     changed;
                    538:
1.197     nicm      539:        if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
1.107     nicm      540:                tty_force_cursor_colour(tty, s->ccolour);
                    541:
1.1       nicm      542:        if (tty->flags & TTY_NOCURSOR)
                    543:                mode &= ~MODE_CURSOR;
                    544:
                    545:        changed = mode ^ tty->mode;
1.183     nicm      546:        if (changed & MODE_BLINKING) {
                    547:                if (tty_term_has(tty->term, TTYC_CVVIS))
                    548:                        tty_putcode(tty, TTYC_CVVIS);
                    549:                else
                    550:                        tty_putcode(tty, TTYC_CNORM);
                    551:                changed |= MODE_CURSOR;
                    552:        }
                    553:        if (changed & MODE_CURSOR) {
                    554:                if (mode & MODE_CURSOR)
                    555:                        tty_putcode(tty, TTYC_CNORM);
                    556:                else
1.1       nicm      557:                        tty_putcode(tty, TTYC_CIVIS);
1.108     nicm      558:        }
1.181     nicm      559:        if (s != NULL && tty->cstyle != s->cstyle) {
1.160     nicm      560:                if (tty_term_has(tty->term, TTYC_SS)) {
1.108     nicm      561:                        if (s->cstyle == 0 &&
1.160     nicm      562:                            tty_term_has(tty->term, TTYC_SE))
                    563:                                tty_putcode(tty, TTYC_SE);
1.108     nicm      564:                        else
1.160     nicm      565:                                tty_putcode1(tty, TTYC_SS, s->cstyle);
1.108     nicm      566:                }
                    567:                tty->cstyle = s->cstyle;
1.1       nicm      568:        }
1.195     nicm      569:        if (changed & ALL_MOUSE_MODES) {
1.94      nicm      570:                if (mode & ALL_MOUSE_MODES) {
1.153     nicm      571:                        /*
                    572:                         * Enable the SGR (1006) extension unconditionally, as
1.221     nicm      573:                         * it is safe from misinterpretation.
1.153     nicm      574:                         */
                    575:                        tty_puts(tty, "\033[?1006h");
1.225     nicm      576:                        if (mode & MODE_MOUSE_ALL)
                    577:                                tty_puts(tty, "\033[?1003h");
                    578:                        else if (mode & MODE_MOUSE_BUTTON)
1.94      nicm      579:                                tty_puts(tty, "\033[?1002h");
1.98      nicm      580:                        else if (mode & MODE_MOUSE_STANDARD)
                    581:                                tty_puts(tty, "\033[?1000h");
1.86      nicm      582:                } else {
1.225     nicm      583:                        if (tty->mode & MODE_MOUSE_ALL)
                    584:                                tty_puts(tty, "\033[?1003l");
                    585:                        else if (tty->mode & MODE_MOUSE_BUTTON)
1.94      nicm      586:                                tty_puts(tty, "\033[?1002l");
1.98      nicm      587:                        else if (tty->mode & MODE_MOUSE_STANDARD)
                    588:                                tty_puts(tty, "\033[?1000l");
1.153     nicm      589:                        tty_puts(tty, "\033[?1006l");
1.86      nicm      590:                }
1.76      nicm      591:        }
                    592:        if (changed & MODE_KKEYPAD) {
                    593:                if (mode & MODE_KKEYPAD)
                    594:                        tty_putcode(tty, TTYC_SMKX);
                    595:                else
                    596:                        tty_putcode(tty, TTYC_RMKX);
1.115     nicm      597:        }
                    598:        if (changed & MODE_BRACKETPASTE) {
                    599:                if (mode & MODE_BRACKETPASTE)
                    600:                        tty_puts(tty, "\033[?2004h");
                    601:                else
                    602:                        tty_puts(tty, "\033[?2004l");
1.1       nicm      603:        }
                    604:        tty->mode = mode;
                    605: }
                    606:
1.207     nicm      607: static void
1.168     nicm      608: tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
                    609:     enum tty_code_code code1, u_int n)
1.1       nicm      610: {
                    611:        if (tty_term_has(tty->term, code))
                    612:                tty_putcode1(tty, code, n);
                    613:        else {
                    614:                while (n-- > 0)
                    615:                        tty_putcode(tty, code1);
                    616:        }
                    617: }
                    618:
1.207     nicm      619: static void
1.133     nicm      620: tty_repeat_space(struct tty *tty, u_int n)
                    621: {
                    622:        while (n-- > 0)
                    623:                tty_putc(tty, ' ');
                    624: }
                    625:
1.1       nicm      626: /*
1.119     nicm      627:  * Is the region large enough to be worth redrawing once later rather than
                    628:  * probably several times now? Currently yes if it is more than 50% of the
                    629:  * pane.
                    630:  */
1.207     nicm      631: static int
1.194     nicm      632: tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1.119     nicm      633: {
                    634:        struct window_pane      *wp = ctx->wp;
                    635:
                    636:        return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2);
                    637: }
                    638:
                    639: /*
1.176     nicm      640:  * Return if BCE is needed but the terminal doesn't have it - it'll need to be
                    641:  * emulated.
                    642:  */
1.207     nicm      643: static int
1.210     nicm      644: tty_fake_bce(const struct tty *tty, const struct window_pane *wp, u_int bg)
1.176     nicm      645: {
                    646:        struct grid_cell        gc;
                    647:
1.210     nicm      648:        if (tty_term_flag(tty->term, TTYC_BCE))
                    649:                return (0);
                    650:
1.176     nicm      651:        memcpy(&gc, &grid_default_cell, sizeof gc);
1.203     nicm      652:        if (wp != NULL)
                    653:                tty_default_colours(&gc, wp);
1.176     nicm      654:
1.210     nicm      655:        if (bg != 8 || gc.bg != 8)
                    656:                return (1);
                    657:        return (0);
1.176     nicm      658: }
                    659:
                    660: /*
1.1       nicm      661:  * Redraw scroll region using data from screen (already updated). Used when
                    662:  * CSR not supported, or window is a pane that doesn't take up the full
                    663:  * width of the terminal.
                    664:  */
1.207     nicm      665: static void
1.24      nicm      666: tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      667: {
1.14      nicm      668:        struct window_pane      *wp = ctx->wp;
                    669:        struct screen           *s = wp->screen;
1.204     nicm      670:        u_int                    i;
1.1       nicm      671:
                    672:        /*
1.119     nicm      673:         * If region is large, schedule a window redraw. In most cases this is
                    674:         * likely to be followed by some more scrolling.
1.1       nicm      675:         */
1.119     nicm      676:        if (tty_large_region(tty, ctx)) {
1.1       nicm      677:                wp->flags |= PANE_REDRAW;
                    678:                return;
                    679:        }
                    680:
1.14      nicm      681:        if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
                    682:                for (i = ctx->ocy; i < screen_size_y(s); i++)
1.176     nicm      683:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      684:        } else {
1.14      nicm      685:                for (i = ctx->orupper; i <= ctx->orlower; i++)
1.176     nicm      686:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      687:        }
                    688: }
                    689:
1.229   ! nicm      690: static void
        !           691: tty_clear_area(struct tty *tty, const struct tty_ctx *ctx, u_int sx, u_int sy,
        !           692:     u_int ex, u_int ey)
        !           693: {
        !           694:        char s[64];
        !           695:
        !           696:        snprintf (s, sizeof s, "\033[32;%u;%u;%u;%u$x", ctx->yoff + sy + 1,
        !           697:            ctx->xoff + sx + 1, ctx->yoff + ey + 1, ctx->xoff + ex + 1);
        !           698:        tty_puts(tty, s);
        !           699: }
        !           700:
1.1       nicm      701: void
1.176     nicm      702: tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
                    703:     u_int oy)
                    704: {
                    705:        tty_draw_line(tty, wp, wp->screen, py, ox, oy);
                    706: }
                    707:
                    708: void
                    709: tty_draw_line(struct tty *tty, const struct window_pane *wp,
                    710:     struct screen *s, u_int py, u_int ox, u_int oy)
1.1       nicm      711: {
1.209     nicm      712:        struct grid_cell         gc, tmp_gc;
1.46      nicm      713:        struct grid_line        *gl;
1.1       nicm      714:        u_int                    i, sx;
1.181     nicm      715:        int                      flags;
1.1       nicm      716:
1.181     nicm      717:        flags = tty->flags & TTY_NOCURSOR;
                    718:        tty->flags |= TTY_NOCURSOR;
                    719:        tty_update_mode(tty, tty->mode, s);
1.35      nicm      720:
1.214     nicm      721:        tty_region_off(tty);
                    722:        tty_margin_off(tty);
                    723:
1.1       nicm      724:        sx = screen_size_x(s);
1.19      nicm      725:        if (sx > s->grid->linedata[s->grid->hsize + py].cellsize)
                    726:                sx = s->grid->linedata[s->grid->hsize + py].cellsize;
1.1       nicm      727:        if (sx > tty->sx)
                    728:                sx = tty->sx;
                    729:
1.46      nicm      730:        /*
1.174     nicm      731:         * Don't move the cursor to the start position if it will wrap there
1.50      nicm      732:         * itself.
1.46      nicm      733:         */
                    734:        gl = NULL;
                    735:        if (py != 0)
                    736:                gl = &s->grid->linedata[s->grid->hsize + py - 1];
1.83      nicm      737:        if (oy + py == 0 || gl == NULL || !(gl->flags & GRID_LINE_WRAPPED) ||
1.47      nicm      738:            tty->cx < tty->sx || ox != 0 ||
                    739:            (oy + py != tty->cy + 1 && tty->cy != s->rlower + oy))
1.46      nicm      740:                tty_cursor(tty, ox, oy + py);
                    741:
1.1       nicm      742:        for (i = 0; i < sx; i++) {
1.193     nicm      743:                grid_view_get_cell(s->grid, i, py, &gc);
1.209     nicm      744:                if (gc.flags & GRID_FLAG_SELECTED) {
                    745:                        screen_select_cell(s, &tmp_gc, &gc);
                    746:                        tty_cell(tty, &tmp_gc, wp);
                    747:                } else
                    748:                        tty_cell(tty, &gc, wp);
1.1       nicm      749:        }
                    750:
1.181     nicm      751:        if (sx < tty->sx) {
1.210     nicm      752:                tty_default_attributes(tty, wp, 8);
1.181     nicm      753:
                    754:                tty_cursor(tty, ox + sx, oy + py);
                    755:                if (sx != screen_size_x(s) &&
                    756:                    ox + screen_size_x(s) >= tty->sx &&
                    757:                    tty_term_has(tty->term, TTYC_EL) &&
1.210     nicm      758:                    !tty_fake_bce(tty, wp, 8))
1.181     nicm      759:                        tty_putcode(tty, TTYC_EL);
                    760:                else
                    761:                        tty_repeat_space(tty, screen_size_x(s) - sx);
1.35      nicm      762:        }
1.1       nicm      763:
1.181     nicm      764:        tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1.107     nicm      765:        tty_update_mode(tty, tty->mode, s);
1.15      nicm      766: }
                    767:
1.201     nicm      768: static int
1.182     nicm      769: tty_client_ready(struct client *c, struct window_pane *wp)
                    770: {
                    771:        if (c->session == NULL || c->tty.term == NULL)
                    772:                return (0);
                    773:        if (c->flags & CLIENT_SUSPENDED)
                    774:                return (0);
                    775:        if (c->tty.flags & TTY_FREEZE)
                    776:                return (0);
                    777:        if (c->session->curw->window != wp->window)
                    778:                return (0);
                    779:        return (1);
                    780: }
                    781:
1.15      nicm      782: void
1.182     nicm      783: tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
                    784:     struct tty_ctx *ctx)
1.15      nicm      785: {
                    786:        struct window_pane      *wp = ctx->wp;
                    787:        struct client           *c;
                    788:
1.75      nicm      789:        /* wp can be NULL if updating the screen but not the terminal. */
1.15      nicm      790:        if (wp == NULL)
                    791:                return;
                    792:
                    793:        if (wp->window->flags & WINDOW_REDRAW || wp->flags & PANE_REDRAW)
                    794:                return;
1.129     nicm      795:        if (!window_pane_visible(wp) || wp->flags & PANE_DROP)
1.15      nicm      796:                return;
                    797:
1.178     nicm      798:        TAILQ_FOREACH(c, &clients, entry) {
1.182     nicm      799:                if (!tty_client_ready(c, wp))
1.15      nicm      800:                        continue;
                    801:
1.139     nicm      802:                ctx->xoff = wp->xoff;
                    803:                ctx->yoff = wp->yoff;
                    804:                if (status_at_line(c) == 0)
                    805:                        ctx->yoff++;
1.113     nicm      806:
1.139     nicm      807:                cmdfn(&c->tty, ctx);
1.1       nicm      808:        }
                    809: }
                    810:
                    811: void
1.24      nicm      812: tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      813: {
1.77      nicm      814:        struct window_pane      *wp = ctx->wp;
1.1       nicm      815:
1.210     nicm      816:        if (!tty_pane_full_width(tty, ctx) ||
                    817:            tty_fake_bce(tty, wp, ctx->bg) ||
                    818:            (!tty_term_has(tty->term, TTYC_ICH) &&
                    819:            !tty_term_has(tty->term, TTYC_ICH1))) {
1.176     nicm      820:                tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
1.1       nicm      821:                return;
                    822:        }
                    823:
1.210     nicm      824:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      825:
1.77      nicm      826:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm      827:
1.206     nicm      828:        tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1.1       nicm      829: }
                    830:
                    831: void
1.24      nicm      832: tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      833: {
1.77      nicm      834:        struct window_pane      *wp = ctx->wp;
1.1       nicm      835:
1.210     nicm      836:        if (!tty_pane_full_width(tty, ctx) ||
                    837:            tty_fake_bce(tty, wp, ctx->bg) ||
1.26      nicm      838:            (!tty_term_has(tty->term, TTYC_DCH) &&
                    839:            !tty_term_has(tty->term, TTYC_DCH1))) {
1.176     nicm      840:                tty_draw_pane(tty, wp, ctx->ocy, ctx->xoff, ctx->yoff);
1.1       nicm      841:                return;
                    842:        }
                    843:
1.210     nicm      844:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      845:
1.77      nicm      846:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm      847:
1.206     nicm      848:        tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1.146     nicm      849: }
                    850:
                    851: void
                    852: tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
                    853: {
                    854:        u_int   i;
                    855:
1.176     nicm      856:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.146     nicm      857:
                    858:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                    859:
1.210     nicm      860:        if (tty_term_has(tty->term, TTYC_ECH) &&
                    861:            !tty_fake_bce(tty, ctx->wp, ctx->bg))
1.146     nicm      862:                tty_putcode1(tty, TTYC_ECH, ctx->num);
                    863:        else {
                    864:                for (i = 0; i < ctx->num; i++)
                    865:                        tty_putc(tty, ' ');
                    866:        }
1.1       nicm      867: }
                    868:
                    869: void
1.24      nicm      870: tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      871: {
1.210     nicm      872:        if (!tty_pane_full_width(tty, ctx) ||
                    873:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.77      nicm      874:            !tty_term_has(tty->term, TTYC_CSR) ||
1.72      nicm      875:            !tty_term_has(tty->term, TTYC_IL1)) {
1.14      nicm      876:                tty_redraw_region(tty, ctx);
1.1       nicm      877:                return;
                    878:        }
                    879:
1.210     nicm      880:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm      881:
1.77      nicm      882:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      883:        tty_margin_off(tty);
1.77      nicm      884:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      885:
1.12      nicm      886:        tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1.1       nicm      887: }
                    888:
                    889: void
1.24      nicm      890: tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      891: {
1.210     nicm      892:        if (!tty_pane_full_width(tty, ctx) ||
                    893:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.72      nicm      894:            !tty_term_has(tty->term, TTYC_CSR) ||
                    895:            !tty_term_has(tty->term, TTYC_DL1)) {
1.14      nicm      896:                tty_redraw_region(tty, ctx);
1.1       nicm      897:                return;
                    898:        }
                    899:
1.210     nicm      900:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm      901:
1.77      nicm      902:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      903:        tty_margin_off(tty);
1.77      nicm      904:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      905:
1.12      nicm      906:        tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1.1       nicm      907: }
                    908:
                    909: void
1.24      nicm      910: tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      911: {
1.77      nicm      912:        struct window_pane      *wp = ctx->wp;
1.12      nicm      913:        struct screen           *s = wp->screen;
1.229   ! nicm      914:        u_int                    sx = screen_size_x(s);
1.1       nicm      915:
1.210     nicm      916:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      917:
1.77      nicm      918:        tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.41      nicm      919:
1.210     nicm      920:        if (tty_pane_full_width(tty, ctx) &&
                    921:            !tty_fake_bce(tty, wp, ctx->bg) &&
1.176     nicm      922:            tty_term_has(tty->term, TTYC_EL))
1.1       nicm      923:                tty_putcode(tty, TTYC_EL);
1.229   ! nicm      924:        else if (tty->term_type == TTY_VT420 &&
        !           925:            !tty_fake_bce(tty, wp, ctx->bg))
        !           926:                tty_clear_area(tty, ctx, 0, ctx->ocy, sx - 1, ctx->ocy);
1.133     nicm      927:        else
1.229   ! nicm      928:                tty_repeat_space(tty, sx);
1.1       nicm      929: }
                    930:
                    931: void
1.24      nicm      932: tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      933: {
1.77      nicm      934:        struct window_pane      *wp = ctx->wp;
1.12      nicm      935:        struct screen           *s = wp->screen;
1.229   ! nicm      936:        u_int                    sx = screen_size_x(s);
1.1       nicm      937:
1.210     nicm      938:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      939:
1.41      nicm      940:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                    941:
1.176     nicm      942:        if (tty_pane_full_width(tty, ctx) &&
1.210     nicm      943:            tty_term_has(tty->term, TTYC_EL) &&
                    944:            !tty_fake_bce(tty, wp, ctx->bg))
1.1       nicm      945:                tty_putcode(tty, TTYC_EL);
1.229   ! nicm      946:        else if (tty->term_type == TTY_VT420 &&
        !           947:            !tty_fake_bce(tty, wp, ctx->bg))
        !           948:                tty_clear_area(tty, ctx, ctx->ocx, ctx->ocy, sx - 1, ctx->ocy);
1.133     nicm      949:        else
1.229   ! nicm      950:                tty_repeat_space(tty, sx - ctx->ocx);
1.1       nicm      951: }
                    952:
                    953: void
1.24      nicm      954: tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      955: {
1.210     nicm      956:        struct window_pane      *wp = ctx->wp;
                    957:
                    958:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      959:
1.210     nicm      960:        if (ctx->xoff == 0 &&
                    961:            tty_term_has(tty->term, TTYC_EL1) &&
                    962:            !tty_fake_bce(tty, ctx->wp, ctx->bg)) {
1.41      nicm      963:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      964:                tty_putcode(tty, TTYC_EL1);
1.229   ! nicm      965:        } else if (tty->term_type == TTY_VT420 &&
        !           966:            !tty_fake_bce(tty, wp, ctx->bg))
        !           967:                tty_clear_area(tty, ctx, 0, ctx->ocy, ctx->ocx, ctx->ocy);
        !           968:        else {
1.41      nicm      969:                tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm      970:                tty_repeat_space(tty, ctx->ocx + 1);
1.1       nicm      971:        }
                    972: }
                    973:
                    974: void
1.24      nicm      975: tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      976: {
1.56      nicm      977:        if (ctx->ocy != ctx->orupper)
                    978:                return;
                    979:
1.210     nicm      980:        if (!tty_pane_full_width(tty, ctx) ||
                    981:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.70      nicm      982:            !tty_term_has(tty->term, TTYC_CSR) ||
                    983:            !tty_term_has(tty->term, TTYC_RI)) {
1.14      nicm      984:                tty_redraw_region(tty, ctx);
1.1       nicm      985:                return;
                    986:        }
                    987:
1.176     nicm      988:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.77      nicm      989:
1.56      nicm      990:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      991:        tty_margin_off(tty);
1.56      nicm      992:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1.77      nicm      993:
1.56      nicm      994:        tty_putcode(tty, TTYC_RI);
1.1       nicm      995: }
                    996:
                    997: void
1.24      nicm      998: tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      999: {
1.77      nicm     1000:        struct window_pane      *wp = ctx->wp;
1.1       nicm     1001:
1.56      nicm     1002:        if (ctx->ocy != ctx->orlower)
                   1003:                return;
                   1004:
1.212     nicm     1005:        if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.210     nicm     1006:            tty_fake_bce(tty, wp, ctx->bg) ||
1.1       nicm     1007:            !tty_term_has(tty->term, TTYC_CSR)) {
1.128     nicm     1008:                if (tty_large_region(tty, ctx))
                   1009:                        wp->flags |= PANE_REDRAW;
1.140     nicm     1010:                else
1.128     nicm     1011:                        tty_redraw_region(tty, ctx);
1.1       nicm     1012:                return;
                   1013:        }
1.52      nicm     1014:
                   1015:        /*
1.212     nicm     1016:         * If this line wrapped naturally (ctx->num is nonzero) and we are not
                   1017:         * using margins, don't do anything - the cursor can just be moved
                   1018:         * to the last cell and wrap naturally.
1.52      nicm     1019:         */
1.214     nicm     1020:        if ((!tty_use_margin(tty) ||
                   1021:            tty_pane_full_width(tty, ctx)) &&
1.212     nicm     1022:            ctx->num != 0 &&
1.216     nicm     1023:            !(tty->term->flags & TERM_EARLYWRAP))
1.52      nicm     1024:                return;
1.1       nicm     1025:
1.176     nicm     1026:        tty_attributes(tty, &grid_default_cell, wp);
1.77      nicm     1027:
1.56      nicm     1028:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.212     nicm     1029:        tty_margin_pane(tty, ctx);
                   1030:
                   1031:        /*
                   1032:         * If we want to wrap a pane, the cursor needs to be exactly on the
                   1033:         * right of the region. But if the pane isn't on the right, it may be
                   1034:         * off the edge - if so, move the cursor back to the right.
                   1035:         */
                   1036:        if (ctx->xoff + ctx->ocx > tty->rright)
1.216     nicm     1037:                tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1.212     nicm     1038:        else
                   1039:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.77      nicm     1040:
1.56      nicm     1041:        tty_putc(tty, '\n');
1.1       nicm     1042: }
                   1043:
                   1044: void
1.24      nicm     1045: tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1046: {
1.77      nicm     1047:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1048:        struct screen           *s = wp->screen;
1.204     nicm     1049:        u_int                    i, j;
1.229   ! nicm     1050:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1051:
1.210     nicm     1052:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1053:
1.229   ! nicm     1054:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1055:        tty_margin_off(tty);
1.39      nicm     1056:
1.176     nicm     1057:        if (tty_pane_full_width(tty, ctx) &&
1.229   ! nicm     1058:            status_at_line(tty->client) <= 0 &&
        !          1059:            tty_term_has(tty->term, TTYC_ED)) {
        !          1060:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
        !          1061:                tty_putcode(tty, TTYC_ED);
        !          1062:        } else if (tty->term_type == TTY_VT420 &&
        !          1063:            !tty_fake_bce(tty, wp, ctx->bg)) {
        !          1064:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
        !          1065:                if (tty_pane_full_width(tty, ctx) &&
        !          1066:                    tty_term_has(tty->term, TTYC_EL))
        !          1067:                        tty_putcode(tty, TTYC_EL);
        !          1068:                else
        !          1069:                        tty_repeat_space(tty, sx - ctx->ocx);
        !          1070:                if (ctx->ocy != sy - 1) {
        !          1071:                        tty_clear_area(tty, ctx, 0, ctx->ocy + 1, sx - 1,
        !          1072:                            sy - 1);
        !          1073:                }
        !          1074:        } else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1075:            tty_term_has(tty->term, TTYC_EL) &&
                   1076:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229   ! nicm     1077:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1078:                tty_putcode(tty, TTYC_EL);
1.229   ! nicm     1079:                if (ctx->ocy != sy - 1) {
1.41      nicm     1080:                        tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
1.229   ! nicm     1081:                        for (i = ctx->ocy + 1; i < sy; i++) {
1.1       nicm     1082:                                tty_putcode(tty, TTYC_EL);
1.229   ! nicm     1083:                                if (i == sy - 1)
1.1       nicm     1084:                                        continue;
                   1085:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1086:                                tty->cy++;
                   1087:                        }
                   1088:                }
                   1089:        } else {
1.229   ! nicm     1090:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
        !          1091:                tty_repeat_space(tty, sx - ctx->ocx);
        !          1092:                for (j = ctx->ocy + 1; j < sy; j++) {
1.41      nicm     1093:                        tty_cursor_pane(tty, ctx, 0, j);
1.229   ! nicm     1094:                        tty_repeat_space(tty, sx);
1.1       nicm     1095:                }
                   1096:        }
                   1097: }
                   1098:
                   1099: void
1.24      nicm     1100: tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1101: {
1.77      nicm     1102:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1103:        struct screen           *s = wp->screen;
1.204     nicm     1104:        u_int                    i, j;
1.229   ! nicm     1105:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1106:
1.227     nicm     1107:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1108:
1.229   ! nicm     1109:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1110:        tty_margin_off(tty);
1.39      nicm     1111:
1.229   ! nicm     1112:        if (tty->term_type == TTY_VT420 &&
        !          1113:            !tty_fake_bce(tty, wp, ctx->bg))
        !          1114:                tty_clear_area(tty, ctx, 0, 0, sx - 1, ctx->ocy - 1);
        !          1115:        else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1116:            tty_term_has(tty->term, TTYC_EL) &&
                   1117:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229   ! nicm     1118:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1119:                for (i = 0; i < ctx->ocy; i++) {
1.1       nicm     1120:                        tty_putcode(tty, TTYC_EL);
                   1121:                        tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1122:                        tty->cy++;
                   1123:                }
                   1124:        } else {
1.229   ! nicm     1125:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1126:                for (j = 0; j < ctx->ocy; j++) {
1.41      nicm     1127:                        tty_cursor_pane(tty, ctx, 0, j);
1.229   ! nicm     1128:                        tty_repeat_space(tty, sx);
1.1       nicm     1129:                }
                   1130:        }
1.229   ! nicm     1131:        tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm     1132:        tty_repeat_space(tty, ctx->ocx + 1);
1.1       nicm     1133: }
                   1134:
                   1135: void
1.24      nicm     1136: tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1137: {
1.77      nicm     1138:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1139:        struct screen           *s = wp->screen;
1.204     nicm     1140:        u_int                    i, j;
1.229   ! nicm     1141:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1142:
1.210     nicm     1143:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1144:
1.229   ! nicm     1145:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1146:        tty_margin_off(tty);
1.39      nicm     1147:
1.176     nicm     1148:        if (tty_pane_full_width(tty, ctx) &&
1.229   ! nicm     1149:            status_at_line(tty->client) <= 0 &&
        !          1150:            tty_term_has(tty->term, TTYC_ED)) {
        !          1151:                tty_cursor_pane(tty, ctx, 0, 0);
        !          1152:                tty_putcode(tty, TTYC_ED);
        !          1153:        } else if (tty->term_type == TTY_VT420 &&
        !          1154:            !tty_fake_bce(tty, wp, ctx->bg))
        !          1155:                tty_clear_area(tty, ctx, 0, 0, sx - 1, sy - 1);
        !          1156:        else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1157:            tty_term_has(tty->term, TTYC_EL) &&
                   1158:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229   ! nicm     1159:                tty_cursor_pane(tty, ctx, 0, 0);
        !          1160:                for (i = 0; i < sy; i++) {
1.1       nicm     1161:                        tty_putcode(tty, TTYC_EL);
1.229   ! nicm     1162:                        if (i != sy - 1) {
1.1       nicm     1163:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1164:                                tty->cy++;
                   1165:                        }
                   1166:                }
                   1167:        } else {
1.229   ! nicm     1168:                tty_cursor_pane(tty, ctx, 0, 0);
        !          1169:                for (j = 0; j < sy; j++) {
1.41      nicm     1170:                        tty_cursor_pane(tty, ctx, 0, j);
1.229   ! nicm     1171:                        tty_repeat_space(tty, sx);
1.1       nicm     1172:                }
1.4       nicm     1173:        }
                   1174: }
                   1175:
                   1176: void
1.24      nicm     1177: tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1.4       nicm     1178: {
1.12      nicm     1179:        struct window_pane      *wp = ctx->wp;
                   1180:        struct screen           *s = wp->screen;
                   1181:        u_int                    i, j;
1.4       nicm     1182:
1.176     nicm     1183:        tty_attributes(tty, &grid_default_cell, wp);
1.4       nicm     1184:
1.39      nicm     1185:        tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
1.214     nicm     1186:        tty_margin_off(tty);
1.4       nicm     1187:
                   1188:        for (j = 0; j < screen_size_y(s); j++) {
1.41      nicm     1189:                tty_cursor_pane(tty, ctx, 0, j);
1.4       nicm     1190:                for (i = 0; i < screen_size_x(s); i++)
                   1191:                        tty_putc(tty, 'E');
1.1       nicm     1192:        }
                   1193: }
                   1194:
                   1195: void
1.24      nicm     1196: tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1197: {
1.46      nicm     1198:        struct window_pane      *wp = ctx->wp;
                   1199:        struct screen           *s = wp->screen;
1.203     nicm     1200:        u_int                    cx, width;
1.46      nicm     1201:
1.222     nicm     1202:        if (ctx->xoff + ctx->ocx > tty->sx - 1 && ctx->ocy == ctx->orlower) {
                   1203:                if (tty_pane_full_width(tty, ctx))
                   1204:                        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1205:                else
                   1206:                        tty_margin_off(tty);
                   1207:        }
1.46      nicm     1208:
1.57      nicm     1209:        /* Is the cursor in the very last position? */
1.193     nicm     1210:        width = ctx->cell->data.width;
1.102     nicm     1211:        if (ctx->ocx > wp->sx - width) {
1.216     nicm     1212:                if (!tty_pane_full_width(tty, ctx)) {
1.57      nicm     1213:                        /*
                   1214:                         * The pane doesn't fill the entire line, the linefeed
                   1215:                         * will already have happened, so just move the cursor.
                   1216:                         */
1.125     nicm     1217:                        if (ctx->ocy != wp->yoff + wp->screen->rlower)
1.122     nicm     1218:                                tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
                   1219:                        else
                   1220:                                tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.218     nicm     1221:                } else if (tty->cy != ctx->yoff + ctx->ocy ||
                   1222:                    tty->cx < tty->sx) {
1.57      nicm     1223:                        /*
                   1224:                         * The cursor isn't in the last position already, so
1.216     nicm     1225:                         * move as far right as possible and redraw the last
1.57      nicm     1226:                         * cell to move into the last position.
                   1227:                         */
1.193     nicm     1228:                        cx = screen_size_x(s) - ctx->last_cell.data.width;
1.50      nicm     1229:                        tty_cursor_pane(tty, ctx, cx, ctx->ocy);
1.176     nicm     1230:                        tty_cell(tty, &ctx->last_cell, wp);
1.50      nicm     1231:                }
                   1232:        } else
1.46      nicm     1233:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1234:
1.176     nicm     1235:        tty_cell(tty, ctx->cell, wp);
1.106     nicm     1236: }
                   1237:
                   1238: void
                   1239: tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
                   1240: {
                   1241:        char    *buf;
                   1242:        size_t   off;
                   1243:
                   1244:        if (!tty_term_has(tty->term, TTYC_MS))
                   1245:                return;
                   1246:
                   1247:        off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
                   1248:        buf = xmalloc(off);
                   1249:
                   1250:        b64_ntop(ctx->ptr, ctx->num, buf, off);
                   1251:        tty_putcode_ptr2(tty, TTYC_MS, "", buf);
                   1252:
1.138     nicm     1253:        free(buf);
1.100     nicm     1254: }
                   1255:
                   1256: void
                   1257: tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
                   1258: {
                   1259:        u_int    i;
                   1260:        u_char  *str = ctx->ptr;
                   1261:
                   1262:        for (i = 0; i < ctx->num; i++)
                   1263:                tty_putc(tty, str[i]);
1.141     nicm     1264:
                   1265:        tty->cx = tty->cy = UINT_MAX;
                   1266:        tty->rupper = tty->rlower = UINT_MAX;
                   1267:
1.176     nicm     1268:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.141     nicm     1269:        tty_cursor(tty, 0, 0);
1.1       nicm     1270: }
                   1271:
1.207     nicm     1272: static void
1.176     nicm     1273: tty_cell(struct tty *tty, const struct grid_cell *gc,
                   1274:     const struct window_pane *wp)
1.1       nicm     1275: {
1.193     nicm     1276:        u_int   i;
1.1       nicm     1277:
                   1278:        /* Skip last character if terminal is stupid. */
1.211     nicm     1279:        if ((tty->term->flags & TERM_EARLYWRAP) &&
                   1280:            tty->cy == tty->sy - 1 &&
                   1281:            tty->cx == tty->sx - 1)
1.1       nicm     1282:                return;
                   1283:
                   1284:        /* If this is a padding character, do nothing. */
                   1285:        if (gc->flags & GRID_FLAG_PADDING)
                   1286:                return;
                   1287:
                   1288:        /* Set the attributes. */
1.176     nicm     1289:        tty_attributes(tty, gc, wp);
1.1       nicm     1290:
1.147     nicm     1291:        /* Get the cell and if ASCII write with putc to do ACS translation. */
1.193     nicm     1292:        if (gc->data.size == 1) {
                   1293:                if (*gc->data.data < 0x20 || *gc->data.data == 0x7f)
1.1       nicm     1294:                        return;
1.193     nicm     1295:                tty_putc(tty, *gc->data.data);
1.1       nicm     1296:                return;
                   1297:        }
                   1298:
1.147     nicm     1299:        /* If not UTF-8, write _. */
1.1       nicm     1300:        if (!(tty->flags & TTY_UTF8)) {
1.193     nicm     1301:                for (i = 0; i < gc->data.width; i++)
1.1       nicm     1302:                        tty_putc(tty, '_');
                   1303:                return;
                   1304:        }
                   1305:
1.147     nicm     1306:        /* Write the data. */
1.193     nicm     1307:        tty_putn(tty, gc->data.data, gc->data.size, gc->data.width);
1.1       nicm     1308: }
                   1309:
                   1310: void
                   1311: tty_reset(struct tty *tty)
                   1312: {
                   1313:        struct grid_cell        *gc = &tty->cell;
                   1314:
1.228     nicm     1315:        if (!grid_cells_equal(gc, &grid_default_cell)) {
                   1316:                if ((gc->attr & GRID_ATTR_CHARSET) && tty_use_acs(tty))
                   1317:                        tty_putcode(tty, TTYC_RMACS);
                   1318:                tty_putcode(tty, TTYC_SGR0);
                   1319:                memcpy(gc, &grid_default_cell, sizeof *gc);
                   1320:        }
1.1       nicm     1321:
1.228     nicm     1322:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   1323:        tty->last_wp = -1;
1.1       nicm     1324: }
                   1325:
1.214     nicm     1326: /* Turn off margin. */
                   1327: void
                   1328: tty_region_off(struct tty *tty)
                   1329: {
                   1330:        tty_region(tty, 0, tty->sy - 1);
                   1331: }
                   1332:
1.40      nicm     1333: /* Set region inside pane. */
1.208     nicm     1334: static void
1.196     nicm     1335: tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
                   1336:     u_int rlower)
1.1       nicm     1337: {
1.113     nicm     1338:        tty_region(tty, ctx->yoff + rupper, ctx->yoff + rlower);
1.39      nicm     1339: }
                   1340:
1.40      nicm     1341: /* Set region at absolute position. */
1.214     nicm     1342: static void
1.40      nicm     1343: tty_region(struct tty *tty, u_int rupper, u_int rlower)
1.39      nicm     1344: {
                   1345:        if (tty->rlower == rlower && tty->rupper == rupper)
                   1346:                return;
1.1       nicm     1347:        if (!tty_term_has(tty->term, TTYC_CSR))
                   1348:                return;
1.39      nicm     1349:
                   1350:        tty->rupper = rupper;
                   1351:        tty->rlower = rlower;
1.55      nicm     1352:
                   1353:        /*
                   1354:         * Some terminals (such as PuTTY) do not correctly reset the cursor to
                   1355:         * 0,0 if it is beyond the last column (they do not reset their wrap
                   1356:         * flag so further output causes a line feed). As a workaround, do an
                   1357:         * explicit move to 0 first.
                   1358:         */
                   1359:        if (tty->cx >= tty->sx)
                   1360:                tty_cursor(tty, 0, tty->cy);
1.42      nicm     1361:
1.39      nicm     1362:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.212     nicm     1363:        tty_cursor(tty, 0, 0);
                   1364: }
                   1365:
1.214     nicm     1366: /* Turn off margin. */
                   1367: void
                   1368: tty_margin_off(struct tty *tty)
                   1369: {
                   1370:        tty_margin(tty, 0, tty->sx - 1);
                   1371: }
                   1372:
1.212     nicm     1373: /* Set margin inside pane. */
                   1374: static void
                   1375: tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
                   1376: {
                   1377:        tty_margin(tty, ctx->xoff, ctx->xoff + ctx->wp->sx - 1);
                   1378: }
                   1379:
                   1380: /* Set margin at absolute position. */
1.214     nicm     1381: static void
1.212     nicm     1382: tty_margin(struct tty *tty, u_int rleft, u_int rright)
                   1383: {
                   1384:        char s[64];
                   1385:
                   1386:        if (!tty_use_margin(tty))
                   1387:                return;
                   1388:        if (tty->rleft == rleft && tty->rright == rright)
                   1389:                return;
                   1390:
                   1391:        tty->rleft = rleft;
                   1392:        tty->rright = rright;
                   1393:
                   1394:        snprintf(s, sizeof s, "\033[%u;%us", rleft + 1, rright + 1);
                   1395:        tty_puts(tty, s);
1.78      nicm     1396:        tty_cursor(tty, 0, 0);
1.1       nicm     1397: }
                   1398:
1.42      nicm     1399: /* Move cursor inside pane. */
1.208     nicm     1400: static void
1.41      nicm     1401: tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
                   1402: {
1.113     nicm     1403:        tty_cursor(tty, ctx->xoff + cx, ctx->yoff + cy);
1.41      nicm     1404: }
                   1405:
1.42      nicm     1406: /* Move cursor to absolute position. */
1.41      nicm     1407: void
                   1408: tty_cursor(struct tty *tty, u_int cx, u_int cy)
1.1       nicm     1409: {
1.42      nicm     1410:        struct tty_term *term = tty->term;
                   1411:        u_int            thisx, thisy;
                   1412:        int              change;
1.77      nicm     1413:
1.42      nicm     1414:        if (cx > tty->sx - 1)
                   1415:                cx = tty->sx - 1;
                   1416:
                   1417:        thisx = tty->cx;
                   1418:        thisy = tty->cy;
                   1419:
                   1420:        /* No change. */
                   1421:        if (cx == thisx && cy == thisy)
                   1422:                return;
                   1423:
1.43      nicm     1424:        /* Very end of the line, just use absolute movement. */
                   1425:        if (thisx > tty->sx - 1)
                   1426:                goto absolute;
                   1427:
1.42      nicm     1428:        /* Move to home position (0, 0). */
                   1429:        if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
                   1430:                tty_putcode(tty, TTYC_HOME);
                   1431:                goto out;
                   1432:        }
                   1433:
                   1434:        /* Zero on the next line. */
1.48      nicm     1435:        if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower) {
1.1       nicm     1436:                tty_putc(tty, '\r');
1.42      nicm     1437:                tty_putc(tty, '\n');
                   1438:                goto out;
                   1439:        }
                   1440:
1.45      nicm     1441:        /* Moving column or row. */
1.42      nicm     1442:        if (cy == thisy) {
1.45      nicm     1443:                /*
                   1444:                 * Moving column only, row staying the same.
                   1445:                 */
                   1446:
1.42      nicm     1447:                /* To left edge. */
1.202     nicm     1448:                if (cx == 0) {
1.42      nicm     1449:                        tty_putc(tty, '\r');
                   1450:                        goto out;
                   1451:                }
                   1452:
                   1453:                /* One to the left. */
                   1454:                if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
                   1455:                        tty_putcode(tty, TTYC_CUB1);
                   1456:                        goto out;
                   1457:                }
                   1458:
                   1459:                /* One to the right. */
                   1460:                if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
                   1461:                        tty_putcode(tty, TTYC_CUF1);
                   1462:                        goto out;
                   1463:                }
                   1464:
                   1465:                /* Calculate difference. */
                   1466:                change = thisx - cx;    /* +ve left, -ve right */
                   1467:
                   1468:                /*
                   1469:                 * Use HPA if change is larger than absolute, otherwise move
                   1470:                 * the cursor with CUB/CUF.
                   1471:                 */
1.87      nicm     1472:                if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
1.42      nicm     1473:                        tty_putcode1(tty, TTYC_HPA, cx);
                   1474:                        goto out;
                   1475:                } else if (change > 0 && tty_term_has(term, TTYC_CUB)) {
1.202     nicm     1476:                        if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
                   1477:                                tty_putcode(tty, TTYC_CUB1);
                   1478:                                tty_putcode(tty, TTYC_CUB1);
                   1479:                                goto out;
                   1480:                        }
1.42      nicm     1481:                        tty_putcode1(tty, TTYC_CUB, change);
                   1482:                        goto out;
                   1483:                } else if (change < 0 && tty_term_has(term, TTYC_CUF)) {
                   1484:                        tty_putcode1(tty, TTYC_CUF, -change);
                   1485:                        goto out;
                   1486:                }
1.45      nicm     1487:        } else if (cx == thisx) {
                   1488:                /*
                   1489:                 * Moving row only, column staying the same.
                   1490:                 */
1.42      nicm     1491:
                   1492:                /* One above. */
1.77      nicm     1493:                if (thisy != tty->rupper &&
1.42      nicm     1494:                    cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
                   1495:                        tty_putcode(tty, TTYC_CUU1);
                   1496:                        goto out;
                   1497:                }
                   1498:
                   1499:                /* One below. */
1.49      nicm     1500:                if (thisy != tty->rlower &&
1.42      nicm     1501:                    cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
                   1502:                        tty_putcode(tty, TTYC_CUD1);
                   1503:                        goto out;
                   1504:                }
                   1505:
                   1506:                /* Calculate difference. */
                   1507:                change = thisy - cy;    /* +ve up, -ve down */
                   1508:
                   1509:                /*
1.77      nicm     1510:                 * Try to use VPA if change is larger than absolute or if this
                   1511:                 * change would cross the scroll region, otherwise use CUU/CUD.
1.42      nicm     1512:                 */
1.87      nicm     1513:                if ((u_int) abs(change) > cy ||
1.42      nicm     1514:                    (change < 0 && cy - change > tty->rlower) ||
1.44      nicm     1515:                    (change > 0 && cy - change < tty->rupper)) {
                   1516:                            if (tty_term_has(term, TTYC_VPA)) {
                   1517:                                    tty_putcode1(tty, TTYC_VPA, cy);
                   1518:                                    goto out;
                   1519:                            }
1.42      nicm     1520:                } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
                   1521:                        tty_putcode1(tty, TTYC_CUU, change);
                   1522:                        goto out;
                   1523:                } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
                   1524:                        tty_putcode1(tty, TTYC_CUD, -change);
                   1525:                        goto out;
                   1526:                }
                   1527:        }
                   1528:
1.43      nicm     1529: absolute:
1.42      nicm     1530:        /* Absolute movement. */
                   1531:        tty_putcode2(tty, TTYC_CUP, cy, cx);
                   1532:
                   1533: out:
                   1534:        tty->cx = cx;
                   1535:        tty->cy = cy;
1.1       nicm     1536: }
                   1537:
                   1538: void
1.176     nicm     1539: tty_attributes(struct tty *tty, const struct grid_cell *gc,
                   1540:     const struct window_pane *wp)
1.1       nicm     1541: {
1.63      nicm     1542:        struct grid_cell        *tc = &tty->cell, gc2;
1.85      nicm     1543:        u_char                   changed;
1.61      nicm     1544:
1.228     nicm     1545:        /* Ignore cell if it is the same as the last one. */
                   1546:        if (wp != NULL &&
                   1547:            (int)wp->id == tty->last_wp &&
                   1548:            ~(wp->window->flags & WINDOW_STYLECHANGED) &&
                   1549:            gc->attr == tty->last_cell.attr &&
                   1550:            gc->fg == tty->last_cell.fg &&
                   1551:            gc->bg == tty->last_cell.bg)
                   1552:                return;
                   1553:        tty->last_wp = (wp != NULL ? (int)wp->id : -1);
                   1554:        memcpy(&tty->last_cell, gc, sizeof tty->last_cell);
                   1555:
                   1556:        /* Copy cell and update default colours. */
1.85      nicm     1557:        memcpy(&gc2, gc, sizeof gc2);
1.203     nicm     1558:        if (wp != NULL)
                   1559:                tty_default_colours(&gc2, wp);
1.63      nicm     1560:
1.18      nicm     1561:        /*
                   1562:         * If no setab, try to use the reverse attribute as a best-effort for a
                   1563:         * non-default background. This is a bit of a hack but it doesn't do
                   1564:         * any serious harm and makes a couple of applications happier.
                   1565:         */
                   1566:        if (!tty_term_has(tty->term, TTYC_SETAB)) {
1.85      nicm     1567:                if (gc2.attr & GRID_ATTR_REVERSE) {
                   1568:                        if (gc2.fg != 7 && gc2.fg != 8)
1.64      nicm     1569:                                gc2.attr &= ~GRID_ATTR_REVERSE;
1.18      nicm     1570:                } else {
1.85      nicm     1571:                        if (gc2.bg != 0 && gc2.bg != 8)
1.64      nicm     1572:                                gc2.attr |= GRID_ATTR_REVERSE;
1.18      nicm     1573:                }
                   1574:        }
1.1       nicm     1575:
1.85      nicm     1576:        /* Fix up the colours if necessary. */
1.219     nicm     1577:        tty_check_fg(tty, wp, &gc2);
                   1578:        tty_check_bg(tty, wp, &gc2);
1.85      nicm     1579:
1.64      nicm     1580:        /* If any bits are being cleared, reset everything. */
1.85      nicm     1581:        if (tc->attr & ~gc2.attr)
1.64      nicm     1582:                tty_reset(tty);
                   1583:
                   1584:        /*
                   1585:         * Set the colours. This may call tty_reset() (so it comes next) and
                   1586:         * may add to (NOT remove) the desired attributes by changing new_attr.
                   1587:         */
1.85      nicm     1588:        tty_colours(tty, &gc2);
1.64      nicm     1589:
1.1       nicm     1590:        /* Filter out attribute bits already set. */
1.85      nicm     1591:        changed = gc2.attr & ~tc->attr;
                   1592:        tc->attr = gc2.attr;
1.1       nicm     1593:
                   1594:        /* Set the attributes. */
                   1595:        if (changed & GRID_ATTR_BRIGHT)
                   1596:                tty_putcode(tty, TTYC_BOLD);
                   1597:        if (changed & GRID_ATTR_DIM)
                   1598:                tty_putcode(tty, TTYC_DIM);
1.180     nicm     1599:        if (changed & GRID_ATTR_ITALICS)
                   1600:                tty_set_italics(tty);
1.1       nicm     1601:        if (changed & GRID_ATTR_UNDERSCORE)
                   1602:                tty_putcode(tty, TTYC_SMUL);
                   1603:        if (changed & GRID_ATTR_BLINK)
                   1604:                tty_putcode(tty, TTYC_BLINK);
                   1605:        if (changed & GRID_ATTR_REVERSE) {
                   1606:                if (tty_term_has(tty->term, TTYC_REV))
                   1607:                        tty_putcode(tty, TTYC_REV);
                   1608:                else if (tty_term_has(tty->term, TTYC_SMSO))
                   1609:                        tty_putcode(tty, TTYC_SMSO);
                   1610:        }
                   1611:        if (changed & GRID_ATTR_HIDDEN)
                   1612:                tty_putcode(tty, TTYC_INVIS);
1.90      nicm     1613:        if ((changed & GRID_ATTR_CHARSET) && tty_use_acs(tty))
1.1       nicm     1614:                tty_putcode(tty, TTYC_SMACS);
                   1615: }
                   1616:
1.207     nicm     1617: static void
1.85      nicm     1618: tty_colours(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1619: {
1.61      nicm     1620:        struct grid_cell        *tc = &tty->cell;
1.204     nicm     1621:        int                      have_ax;
1.61      nicm     1622:
                   1623:        /* No changes? Nothing is necessary. */
1.204     nicm     1624:        if (gc->fg == tc->fg && gc->bg == tc->bg)
1.63      nicm     1625:                return;
1.1       nicm     1626:
1.61      nicm     1627:        /*
                   1628:         * Is either the default colour? This is handled specially because the
                   1629:         * best solution might be to reset both colours to default, in which
                   1630:         * case if only one is default need to fall onward to set the other
                   1631:         * colour.
                   1632:         */
1.204     nicm     1633:        if (gc->fg == 8 || gc->bg == 8) {
1.61      nicm     1634:                /*
                   1635:                 * If don't have AX but do have op, send sgr0 (op can't
                   1636:                 * actually be used because it is sometimes the same as sgr0
                   1637:                 * and sometimes isn't). This resets both colours to default.
                   1638:                 *
                   1639:                 * Otherwise, try to set the default colour only as needed.
                   1640:                 */
1.174     nicm     1641:                have_ax = tty_term_flag(tty->term, TTYC_AX);
1.61      nicm     1642:                if (!have_ax && tty_term_has(tty->term, TTYC_OP))
                   1643:                        tty_reset(tty);
                   1644:                else {
1.204     nicm     1645:                        if (gc->fg == 8 && tc->fg != 8) {
1.61      nicm     1646:                                if (have_ax)
                   1647:                                        tty_puts(tty, "\033[39m");
1.204     nicm     1648:                                else if (tc->fg != 7)
1.61      nicm     1649:                                        tty_putcode1(tty, TTYC_SETAF, 7);
                   1650:                                tc->fg = 8;
                   1651:                        }
1.204     nicm     1652:                        if (gc->bg == 8 && tc->bg != 8) {
1.77      nicm     1653:                                if (have_ax)
1.61      nicm     1654:                                        tty_puts(tty, "\033[49m");
1.204     nicm     1655:                                else if (tc->bg != 0)
1.61      nicm     1656:                                        tty_putcode1(tty, TTYC_SETAB, 0);
                   1657:                                tc->bg = 8;
                   1658:                        }
                   1659:                }
                   1660:        }
1.1       nicm     1661:
1.61      nicm     1662:        /* Set the foreground colour. */
1.204     nicm     1663:        if (gc->fg != 8 && gc->fg != tc->fg)
1.85      nicm     1664:                tty_colours_fg(tty, gc);
1.1       nicm     1665:
1.61      nicm     1666:        /*
                   1667:         * Set the background colour. This must come after the foreground as
                   1668:         * tty_colour_fg() can call tty_reset().
                   1669:         */
1.204     nicm     1670:        if (gc->bg != 8 && gc->bg != tc->bg)
1.73      nicm     1671:                tty_colours_bg(tty, gc);
1.1       nicm     1672: }
                   1673:
1.219     nicm     1674: static void
                   1675: tty_check_fg(struct tty *tty, const struct window_pane *wp,
                   1676:     struct grid_cell *gc)
1.85      nicm     1677: {
1.204     nicm     1678:        u_char  r, g, b;
                   1679:        u_int   colours;
1.223     nicm     1680:        int     c;
1.85      nicm     1681:
1.219     nicm     1682:        /* Perform substitution if this pane has a palette */
                   1683:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1684:            (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1685:                gc->fg = c;
1.219     nicm     1686:
1.199     nicm     1687:        /* Is this a 24-bit colour? */
1.204     nicm     1688:        if (gc->fg & COLOUR_FLAG_RGB) {
1.199     nicm     1689:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1690:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1691:                        colour_split_rgb(gc->fg, &r, &g, &b);
                   1692:                        gc->fg = colour_find_rgb(r, g, b);
                   1693:                } else
1.200     nicm     1694:                        return;
1.199     nicm     1695:        }
1.224     nicm     1696:
                   1697:        /* How many colours does this terminal have? */
                   1698:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1699:                colours = 256;
                   1700:        else
                   1701:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1702:
1.85      nicm     1703:        /* Is this a 256-colour colour? */
1.204     nicm     1704:        if (gc->fg & COLOUR_FLAG_256) {
1.85      nicm     1705:                /* And not a 256 colour mode? */
1.224     nicm     1706:                if (colours != 256) {
1.85      nicm     1707:                        gc->fg = colour_256to16(gc->fg);
                   1708:                        if (gc->fg & 8) {
                   1709:                                gc->fg &= 7;
1.175     nicm     1710:                                if (colours >= 16)
                   1711:                                        gc->fg += 90;
                   1712:                                else
                   1713:                                        gc->attr |= GRID_ATTR_BRIGHT;
1.85      nicm     1714:                        } else
                   1715:                                gc->attr &= ~GRID_ATTR_BRIGHT;
                   1716:                }
                   1717:                return;
                   1718:        }
                   1719:
                   1720:        /* Is this an aixterm colour? */
                   1721:        if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
                   1722:                gc->fg -= 90;
                   1723:                gc->attr |= GRID_ATTR_BRIGHT;
                   1724:        }
                   1725: }
                   1726:
1.219     nicm     1727: static void
                   1728: tty_check_bg(struct tty *tty, const struct window_pane *wp,
                   1729:     struct grid_cell *gc)
1.85      nicm     1730: {
1.204     nicm     1731:        u_char  r, g, b;
                   1732:        u_int   colours;
1.223     nicm     1733:        int     c;
1.85      nicm     1734:
1.219     nicm     1735:        /* Perform substitution if this pane has a palette */
                   1736:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1737:            (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1738:                gc->bg = c;
1.219     nicm     1739:
1.199     nicm     1740:        /* Is this a 24-bit colour? */
1.204     nicm     1741:        if (gc->bg & COLOUR_FLAG_RGB) {
1.199     nicm     1742:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1743:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1744:                        colour_split_rgb(gc->bg, &r, &g, &b);
                   1745:                        gc->bg = colour_find_rgb(r, g, b);
                   1746:                } else
1.200     nicm     1747:                        return;
1.199     nicm     1748:        }
1.224     nicm     1749:
                   1750:        /* How many colours does this terminal have? */
                   1751:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1752:                colours = 256;
                   1753:        else
                   1754:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1755:
1.85      nicm     1756:        /* Is this a 256-colour colour? */
1.204     nicm     1757:        if (gc->bg & COLOUR_FLAG_256) {
1.85      nicm     1758:                /*
                   1759:                 * And not a 256 colour mode? Translate to 16-colour
                   1760:                 * palette. Bold background doesn't exist portably, so just
                   1761:                 * discard the bold bit if set.
                   1762:                 */
1.224     nicm     1763:                if (colours != 256) {
1.85      nicm     1764:                        gc->bg = colour_256to16(gc->bg);
1.175     nicm     1765:                        if (gc->bg & 8) {
1.85      nicm     1766:                                gc->bg &= 7;
1.175     nicm     1767:                                if (colours >= 16)
                   1768:                                        gc->fg += 90;
                   1769:                        }
1.85      nicm     1770:                }
                   1771:                return;
                   1772:        }
                   1773:
                   1774:        /* Is this an aixterm colour? */
1.175     nicm     1775:        if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
1.85      nicm     1776:                gc->bg -= 90;
                   1777: }
                   1778:
1.207     nicm     1779: static void
1.85      nicm     1780: tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1781: {
1.61      nicm     1782:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1783:        char                     s[32];
1.1       nicm     1784:
1.204     nicm     1785:        /* Is this a 24-bit or 256-colour colour? */
                   1786:        if (gc->fg & COLOUR_FLAG_RGB ||
                   1787:            gc->fg & COLOUR_FLAG_256) {
                   1788:                if (tty_try_colour(tty, gc->fg, "38") == 0)
1.61      nicm     1789:                        goto save_fg;
1.199     nicm     1790:                /* Should not get here, already converted in tty_check_fg. */
1.85      nicm     1791:                return;
1.1       nicm     1792:        }
                   1793:
1.79      nicm     1794:        /* Is this an aixterm bright colour? */
1.204     nicm     1795:        if (gc->fg >= 90 && gc->fg <= 97) {
                   1796:                xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
1.85      nicm     1797:                tty_puts(tty, s);
                   1798:                goto save_fg;
1.79      nicm     1799:        }
                   1800:
1.61      nicm     1801:        /* Otherwise set the foreground colour. */
1.204     nicm     1802:        tty_putcode1(tty, TTYC_SETAF, gc->fg);
1.61      nicm     1803:
1.77      nicm     1804: save_fg:
1.61      nicm     1805:        /* Save the new values in the terminal current cell. */
1.204     nicm     1806:        tc->fg = gc->fg;
1.1       nicm     1807: }
                   1808:
1.207     nicm     1809: static void
1.73      nicm     1810: tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1811: {
1.61      nicm     1812:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1813:        char                     s[32];
1.1       nicm     1814:
1.204     nicm     1815:        /* Is this a 24-bit or 256-colour colour? */
                   1816:        if (gc->bg & COLOUR_FLAG_RGB ||
                   1817:            gc->bg & COLOUR_FLAG_256) {
                   1818:                if (tty_try_colour(tty, gc->bg, "48") == 0)
1.61      nicm     1819:                        goto save_bg;
1.199     nicm     1820:                /* Should not get here, already converted in tty_check_bg. */
1.85      nicm     1821:                return;
1.79      nicm     1822:        }
                   1823:
                   1824:        /* Is this an aixterm bright colour? */
1.204     nicm     1825:        if (gc->bg >= 90 && gc->bg <= 97) {
                   1826:                xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
1.175     nicm     1827:                tty_puts(tty, s);
                   1828:                goto save_bg;
1.1       nicm     1829:        }
                   1830:
1.61      nicm     1831:        /* Otherwise set the background colour. */
1.204     nicm     1832:        tty_putcode1(tty, TTYC_SETAB, gc->bg);
1.61      nicm     1833:
                   1834: save_bg:
                   1835:        /* Save the new values in the terminal current cell. */
1.204     nicm     1836:        tc->bg = gc->bg;
1.61      nicm     1837: }
                   1838:
1.207     nicm     1839: static int
1.204     nicm     1840: tty_try_colour(struct tty *tty, int colour, const char *type)
1.61      nicm     1841: {
1.204     nicm     1842:        u_char  r, g, b;
1.61      nicm     1843:        char    s[32];
                   1844:
1.204     nicm     1845:        if (colour & COLOUR_FLAG_256) {
                   1846:                /*
                   1847:                 * If the user has specified -2 to the client, setaf and setab
                   1848:                 * may not work (or they may not want to use them), so send the
                   1849:                 * usual sequence.
                   1850:                 */
                   1851:                if (tty->term_flags & TERM_256COLOURS)
                   1852:                        goto fallback_256;
1.189     nicm     1853:
1.204     nicm     1854:                /*
                   1855:                 * If the terminfo entry has 256 colours and setaf and setab
                   1856:                 * exist, assume that they work correctly.
                   1857:                 */
                   1858:                if (tty->term->flags & TERM_256COLOURS) {
                   1859:                        if (*type == '3') {
                   1860:                                if (!tty_term_has(tty->term, TTYC_SETAF))
                   1861:                                        goto fallback_256;
                   1862:                                tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
                   1863:                        } else {
                   1864:                                if (!tty_term_has(tty->term, TTYC_SETAB))
                   1865:                                        goto fallback_256;
                   1866:                                tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
                   1867:                        }
                   1868:                        return (0);
1.188     nicm     1869:                }
1.204     nicm     1870:                goto fallback_256;
                   1871:        }
                   1872:
                   1873:        if (colour & COLOUR_FLAG_RGB) {
                   1874:                if (!tty_term_flag(tty->term, TTYC_TC))
                   1875:                        return (-1);
                   1876:
                   1877:                colour_split_rgb(colour & 0xffffff, &r, &g, &b);
                   1878:                xsnprintf(s, sizeof s, "\033[%s;2;%hhu;%hhu;%hhum", type,
                   1879:                    r, g, b);
                   1880:                tty_puts(tty, s);
1.165     nicm     1881:                return (0);
                   1882:        }
1.61      nicm     1883:
1.165     nicm     1884:        return (-1);
1.188     nicm     1885:
1.204     nicm     1886: fallback_256:
                   1887:        xsnprintf(s, sizeof s, "\033[%s;5;%dm", type, colour & 0xff);
1.188     nicm     1888:        tty_puts(tty, s);
                   1889:        return (0);
1.176     nicm     1890: }
                   1891:
1.207     nicm     1892: static void
1.176     nicm     1893: tty_default_colours(struct grid_cell *gc, const struct window_pane *wp)
                   1894: {
1.203     nicm     1895:        struct window           *w = wp->window;
                   1896:        struct options          *oo = w->options;
                   1897:        const struct grid_cell  *agc, *pgc, *wgc;
1.223     nicm     1898:        int                      c;
1.203     nicm     1899:
                   1900:        if (w->flags & WINDOW_STYLECHANGED) {
                   1901:                w->flags &= ~WINDOW_STYLECHANGED;
                   1902:                agc = options_get_style(oo, "window-active-style");
                   1903:                memcpy(&w->active_style, agc, sizeof w->active_style);
                   1904:                wgc = options_get_style(oo, "window-style");
                   1905:                memcpy(&w->style, wgc, sizeof w->style);
                   1906:        } else {
                   1907:                agc = &w->active_style;
                   1908:                wgc = &w->style;
                   1909:        }
1.176     nicm     1910:        pgc = &wp->colgc;
                   1911:
1.204     nicm     1912:        if (gc->fg == 8) {
                   1913:                if (pgc->fg != 8)
1.176     nicm     1914:                        gc->fg = pgc->fg;
1.204     nicm     1915:                else if (wp == w->active && agc->fg != 8)
1.176     nicm     1916:                        gc->fg = agc->fg;
1.204     nicm     1917:                else
1.176     nicm     1918:                        gc->fg = wgc->fg;
1.219     nicm     1919:
1.223     nicm     1920:                if (gc->fg != 8 &&
                   1921:                    (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1922:                        gc->fg = c;
1.176     nicm     1923:        }
                   1924:
1.204     nicm     1925:        if (gc->bg == 8) {
                   1926:                if (pgc->bg != 8)
1.176     nicm     1927:                        gc->bg = pgc->bg;
1.204     nicm     1928:                else if (wp == w->active && agc->bg != 8)
1.176     nicm     1929:                        gc->bg = agc->bg;
1.204     nicm     1930:                else
1.176     nicm     1931:                        gc->bg = wgc->bg;
1.219     nicm     1932:
1.223     nicm     1933:                if (gc->bg != 8 &&
                   1934:                    (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1935:                        gc->bg = c;
1.176     nicm     1936:        }
1.210     nicm     1937: }
                   1938:
                   1939: static void
                   1940: tty_default_attributes(struct tty *tty, const struct window_pane *wp, u_int bg)
                   1941: {
                   1942:        static struct grid_cell gc;
                   1943:
                   1944:        memcpy(&gc, &grid_default_cell, sizeof gc);
                   1945:        gc.bg = bg;
                   1946:        tty_attributes(tty, &gc, wp);
1.1       nicm     1947: }