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Annotation of src/usr.bin/tmux/tty.c, Revision 1.252

1.252   ! nicm        1: /* $OpenBSD: tty.c,v 1.251 2017/03/06 09:02:59 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.198     nicm        4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20: #include <sys/ioctl.h>
                     21:
1.106     nicm       22: #include <netinet/in.h>
                     23:
1.212     nicm       24: #include <curses.h>
1.1       nicm       25: #include <errno.h>
                     26: #include <fcntl.h>
1.106     nicm       27: #include <resolv.h>
1.42      nicm       28: #include <stdlib.h>
1.1       nicm       29: #include <string.h>
                     30: #include <termios.h>
                     31: #include <unistd.h>
                     32:
                     33: #include "tmux.h"
                     34:
1.207     nicm       35: static int     tty_log_fd = -1;
1.192     nicm       36:
1.207     nicm       37: static int     tty_client_ready(struct client *, struct window_pane *);
1.201     nicm       38:
1.207     nicm       39: static void    tty_set_italics(struct tty *);
                     40: static int     tty_try_colour(struct tty *, int, const char *);
1.208     nicm       41: static void    tty_force_cursor_colour(struct tty *, const char *);
                     42: static void    tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
                     43:                    u_int);
1.242     nicm       44: static void    tty_invalidate(struct tty *);
1.207     nicm       45: static void    tty_colours(struct tty *, const struct grid_cell *);
1.219     nicm       46: static void    tty_check_fg(struct tty *, const struct window_pane *,
                     47:                    struct grid_cell *);
                     48: static void    tty_check_bg(struct tty *, const struct window_pane *,
                     49:                    struct grid_cell *);
1.207     nicm       50: static void    tty_colours_fg(struct tty *, const struct grid_cell *);
                     51: static void    tty_colours_bg(struct tty *, const struct grid_cell *);
                     52:
1.208     nicm       53: static void    tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
                     54:                    u_int);
1.214     nicm       55: static void    tty_region(struct tty *, u_int, u_int);
1.212     nicm       56: static void    tty_margin_pane(struct tty *, const struct tty_ctx *);
1.214     nicm       57: static void    tty_margin(struct tty *, u_int, u_int);
1.207     nicm       58: static int     tty_large_region(struct tty *, const struct tty_ctx *);
1.210     nicm       59: static int     tty_fake_bce(const struct tty *, const struct window_pane *,
                     60:                    u_int);
1.207     nicm       61: static void    tty_redraw_region(struct tty *, const struct tty_ctx *);
                     62: static void    tty_emulate_repeat(struct tty *, enum tty_code_code,
                     63:                    enum tty_code_code, u_int);
                     64: static void    tty_repeat_space(struct tty *, u_int);
                     65: static void    tty_cell(struct tty *, const struct grid_cell *,
                     66:                    const struct window_pane *);
                     67: static void    tty_default_colours(struct grid_cell *,
                     68:                    const struct window_pane *);
1.210     nicm       69: static void    tty_default_attributes(struct tty *, const struct window_pane *,
                     70:                    u_int);
1.1       nicm       71:
1.90      nicm       72: #define tty_use_acs(tty) \
1.131     nicm       73:        (tty_term_has((tty)->term, TTYC_ACSC) && !((tty)->flags & TTY_UTF8))
1.212     nicm       74: #define tty_use_margin(tty) \
1.214     nicm       75:        ((tty)->term_type == TTY_VT420)
1.90      nicm       76:
1.229     nicm       77: #define tty_pane_full_width(tty, ctx)                                  \
1.132     nicm       78:        ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
                     79:
1.192     nicm       80: void
                     81: tty_create_log(void)
                     82: {
                     83:        char    name[64];
                     84:
                     85:        xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
                     86:
                     87:        tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
                     88:        if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
                     89:                fatal("fcntl failed");
                     90: }
                     91:
1.185     nicm       92: int
1.136     nicm       93: tty_init(struct tty *tty, struct client *c, int fd, char *term)
1.1       nicm       94: {
1.30      nicm       95:        char    *path;
                     96:
1.185     nicm       97:        if (!isatty(fd))
                     98:                return (-1);
                     99:
1.30      nicm      100:        memset(tty, 0, sizeof *tty);
1.22      nicm      101:
1.9       nicm      102:        if (term == NULL || *term == '\0')
1.220     nicm      103:                tty->term_name = xstrdup("unknown");
1.1       nicm      104:        else
1.220     nicm      105:                tty->term_name = xstrdup(term);
1.30      nicm      106:        tty->fd = fd;
1.136     nicm      107:        tty->client = c;
1.30      nicm      108:
                    109:        if ((path = ttyname(fd)) == NULL)
1.185     nicm      110:                return (-1);
1.30      nicm      111:        tty->path = xstrdup(path);
1.108     nicm      112:        tty->cstyle = 0;
1.107     nicm      113:        tty->ccolour = xstrdup("");
1.30      nicm      114:
1.1       nicm      115:        tty->flags = 0;
1.212     nicm      116:
1.1       nicm      117:        tty->term_flags = 0;
1.212     nicm      118:        tty->term_type = TTY_UNKNOWN;
1.185     nicm      119:
                    120:        return (0);
1.31      nicm      121: }
                    122:
1.88      nicm      123: int
1.31      nicm      124: tty_resize(struct tty *tty)
                    125: {
                    126:        struct winsize  ws;
1.88      nicm      127:        u_int           sx, sy;
1.31      nicm      128:
                    129:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
1.88      nicm      130:                sx = ws.ws_col;
                    131:                if (sx == 0)
                    132:                        sx = 80;
                    133:                sy = ws.ws_row;
                    134:                if (sy == 0)
                    135:                        sy = 24;
                    136:        } else {
                    137:                sx = 80;
                    138:                sy = 24;
1.31      nicm      139:        }
1.235     nicm      140:        log_debug("%s: %s now %ux%u", __func__, tty->path, sx, sy);
1.114     nicm      141:        if (!tty_set_size(tty, sx, sy))
1.88      nicm      142:                return (0);
1.242     nicm      143:        tty_invalidate(tty);
1.114     nicm      144:        return (1);
                    145: }
                    146:
                    147: int
1.212     nicm      148: tty_set_size(struct tty *tty, u_int sx, u_int sy)
                    149: {
1.114     nicm      150:        if (sx == tty->sx && sy == tty->sy)
                    151:                return (0);
                    152:        tty->sx = sx;
                    153:        tty->sy = sy;
1.88      nicm      154:        return (1);
1.1       nicm      155: }
                    156:
1.244     nicm      157: static void
                    158: tty_read_callback(__unused int fd, __unused short events, void *data)
                    159: {
                    160:        struct tty      *tty = data;
                    161:        size_t           size = EVBUFFER_LENGTH(tty->in);
                    162:        int              nread;
                    163:
                    164:        nread = evbuffer_read(tty->in, tty->fd, -1);
                    165:        if (nread == -1)
                    166:                return;
                    167:        log_debug("%s: read %d bytes (already %zu)", tty->path, nread, size);
                    168:
                    169:        while (tty_keys_next(tty))
                    170:                ;
                    171: }
                    172:
                    173: static void
                    174: tty_write_callback(__unused int fd, __unused short events, void *data)
                    175: {
1.246     nicm      176:        struct tty      *tty = data;
                    177:        size_t           size = EVBUFFER_LENGTH(tty->out);
                    178:        int              nwrite;
1.244     nicm      179:
                    180:        nwrite = evbuffer_write(tty->out, tty->fd);
                    181:        if (nwrite == -1)
                    182:                return;
                    183:        log_debug("%s: wrote %d bytes (of %zu)", tty->path, nwrite, size);
                    184:
1.247     nicm      185:        if (EVBUFFER_LENGTH(tty->out) != 0)
                    186:                event_add(&tty->event_out, NULL);
1.244     nicm      187: }
                    188:
1.1       nicm      189: int
1.166     nicm      190: tty_open(struct tty *tty, char **cause)
1.1       nicm      191: {
1.220     nicm      192:        tty->term = tty_term_find(tty->term_name, tty->fd, cause);
1.21      nicm      193:        if (tty->term == NULL) {
                    194:                tty_close(tty);
                    195:                return (-1);
                    196:        }
                    197:        tty->flags |= TTY_OPENED;
1.1       nicm      198:
1.246     nicm      199:        tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
1.244     nicm      200:
                    201:        event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
                    202:            tty_read_callback, tty);
                    203:        tty->in = evbuffer_new();
1.1       nicm      204:
1.244     nicm      205:        event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
                    206:        tty->out = evbuffer_new();
1.1       nicm      207:
                    208:        tty_start_tty(tty);
                    209:
1.148     nicm      210:        tty_keys_build(tty);
1.1       nicm      211:
                    212:        return (0);
                    213: }
                    214:
1.244     nicm      215: void
                    216: tty_start_tty(struct tty *tty)
1.1       nicm      217: {
1.128     nicm      218:        struct termios  tio;
1.33      nicm      219:
1.244     nicm      220:        if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
                    221:                setblocking(tty->fd, 0);
                    222:                event_add(&tty->event_in, NULL);
                    223:
                    224:                memcpy(&tio, &tty->tio, sizeof tio);
                    225:                tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
                    226:                tio.c_iflag |= IGNBRK;
                    227:                tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
                    228:                tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
                    229:                    ECHOPRT|ECHOKE|ISIG);
                    230:                tio.c_cc[VMIN] = 1;
                    231:                tio.c_cc[VTIME] = 0;
                    232:                if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
                    233:                        tcflush(tty->fd, TCIOFLUSH);
                    234:        }
1.1       nicm      235:
1.10      nicm      236:        tty_putcode(tty, TTYC_SMCUP);
1.1       nicm      237:
1.252   ! nicm      238:        tty_putcode(tty, TTYC_SMKX);
1.90      nicm      239:        if (tty_use_acs(tty))
                    240:                tty_putcode(tty, TTYC_ENACS);
1.1       nicm      241:        tty_putcode(tty, TTYC_CLEAR);
                    242:
                    243:        tty_putcode(tty, TTYC_CNORM);
                    244:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      245:                tty_puts(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.121     nicm      246:
1.189     nicm      247:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.191     nicm      248:                if (options_get_number(global_options, "focus-events")) {
1.162     nicm      249:                        tty->flags |= TTY_FOCUS;
                    250:                        tty_puts(tty, "\033[?1004h");
                    251:                }
1.212     nicm      252:                tty_puts(tty, "\033[c");
1.162     nicm      253:        }
1.1       nicm      254:
1.20      nicm      255:        tty->flags |= TTY_STARTED;
1.242     nicm      256:        tty_invalidate(tty);
1.107     nicm      257:
                    258:        tty_force_cursor_colour(tty, "");
1.177     nicm      259:
                    260:        tty->mouse_drag_flag = 0;
                    261:        tty->mouse_drag_update = NULL;
                    262:        tty->mouse_drag_release = NULL;
1.128     nicm      263: }
                    264:
                    265: void
1.1       nicm      266: tty_stop_tty(struct tty *tty)
                    267: {
                    268:        struct winsize  ws;
                    269:
1.20      nicm      270:        if (!(tty->flags & TTY_STARTED))
                    271:                return;
                    272:        tty->flags &= ~TTY_STARTED;
                    273:
1.244     nicm      274:        event_del(&tty->event_in);
                    275:        event_del(&tty->event_out);
1.66      nicm      276:
1.1       nicm      277:        /*
                    278:         * Be flexible about error handling and try not kill the server just
                    279:         * because the fd is invalid. Things like ssh -t can easily leave us
                    280:         * with a dead tty.
                    281:         */
                    282:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
                    283:                return;
                    284:        if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
                    285:                return;
                    286:
                    287:        tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
1.90      nicm      288:        if (tty_use_acs(tty))
                    289:                tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
1.1       nicm      290:        tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
                    291:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
                    292:        tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
1.160     nicm      293:        if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) {
                    294:                if (tty_term_has(tty->term, TTYC_SE))
                    295:                        tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
1.109     nicm      296:                else
1.160     nicm      297:                        tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
1.108     nicm      298:        }
1.173     nicm      299:        if (tty->mode & MODE_BRACKETPASTE)
                    300:                tty_raw(tty, "\033[?2004l");
1.107     nicm      301:        tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
1.1       nicm      302:
                    303:        tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
                    304:        if (tty_term_has(tty->term, TTYC_KMOUS))
1.179     nicm      305:                tty_raw(tty, "\033[?1000l\033[?1002l\033[?1006l\033[?1005l");
1.151     nicm      306:
1.189     nicm      307:        if (tty_term_flag(tty->term, TTYC_XT)) {
1.162     nicm      308:                if (tty->flags & TTY_FOCUS) {
                    309:                        tty->flags &= ~TTY_FOCUS;
1.172     nicm      310:                        tty_raw(tty, "\033[?1004l");
1.162     nicm      311:                }
                    312:        }
1.10      nicm      313:
1.212     nicm      314:        if (tty_use_margin(tty))
                    315:                tty_raw(tty, "\033[?69l"); /* DECLRMM */
1.10      nicm      316:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
1.150     nicm      317:
                    318:        setblocking(tty->fd, 1);
1.1       nicm      319: }
                    320:
                    321: void
1.20      nicm      322: tty_close(struct tty *tty)
1.1       nicm      323: {
1.123     nicm      324:        if (event_initialized(&tty->key_timer))
                    325:                evtimer_del(&tty->key_timer);
1.20      nicm      326:        tty_stop_tty(tty);
1.1       nicm      327:
1.21      nicm      328:        if (tty->flags & TTY_OPENED) {
1.244     nicm      329:                evbuffer_free(tty->in);
                    330:                event_del(&tty->event_in);
                    331:                evbuffer_free(tty->out);
                    332:                event_del(&tty->event_out);
1.66      nicm      333:
1.21      nicm      334:                tty_term_free(tty->term);
                    335:                tty_keys_free(tty);
                    336:
                    337:                tty->flags &= ~TTY_OPENED;
                    338:        }
1.1       nicm      339:
1.21      nicm      340:        if (tty->fd != -1) {
                    341:                close(tty->fd);
                    342:                tty->fd = -1;
                    343:        }
1.1       nicm      344: }
                    345:
                    346: void
1.20      nicm      347: tty_free(struct tty *tty)
1.1       nicm      348: {
1.20      nicm      349:        tty_close(tty);
1.1       nicm      350:
1.138     nicm      351:        free(tty->ccolour);
1.190     nicm      352:        free(tty->path);
1.220     nicm      353:        free(tty->term_name);
1.1       nicm      354: }
                    355:
                    356: void
1.212     nicm      357: tty_set_type(struct tty *tty, int type)
                    358: {
                    359:        tty->term_type = type;
                    360:
                    361:        if (tty_use_margin(tty))
                    362:                tty_puts(tty, "\033[?69h"); /* DECLRMM */
                    363: }
                    364:
                    365: void
1.1       nicm      366: tty_raw(struct tty *tty, const char *s)
                    367: {
1.150     nicm      368:        ssize_t n, slen;
                    369:        u_int   i;
                    370:
                    371:        slen = strlen(s);
                    372:        for (i = 0; i < 5; i++) {
                    373:                n = write(tty->fd, s, slen);
                    374:                if (n >= 0) {
                    375:                        s += n;
                    376:                        slen -= n;
                    377:                        if (slen == 0)
                    378:                                break;
                    379:                } else if (n == -1 && errno != EAGAIN)
                    380:                        break;
                    381:                usleep(100);
                    382:        }
1.1       nicm      383: }
                    384:
                    385: void
                    386: tty_putcode(struct tty *tty, enum tty_code_code code)
                    387: {
                    388:        tty_puts(tty, tty_term_string(tty->term, code));
                    389: }
                    390:
                    391: void
                    392: tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
                    393: {
                    394:        if (a < 0)
                    395:                return;
                    396:        tty_puts(tty, tty_term_string1(tty->term, code, a));
                    397: }
                    398:
                    399: void
                    400: tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
                    401: {
                    402:        if (a < 0 || b < 0)
                    403:                return;
                    404:        tty_puts(tty, tty_term_string2(tty->term, code, a, b));
                    405: }
                    406:
                    407: void
1.107     nicm      408: tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
                    409: {
                    410:        if (a != NULL)
                    411:                tty_puts(tty, tty_term_ptr1(tty->term, code, a));
                    412: }
                    413:
                    414: void
1.167     nicm      415: tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
                    416:     const void *b)
1.106     nicm      417: {
                    418:        if (a != NULL && b != NULL)
                    419:                tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
                    420: }
                    421:
1.243     nicm      422: static void
                    423: tty_add(struct tty *tty, const char *buf, size_t len)
                    424: {
1.244     nicm      425:        evbuffer_add(tty->out, buf, len);
                    426:        log_debug("%s: %.*s", tty->path, (int)len, (const char *)buf);
1.243     nicm      427:
                    428:        if (tty_log_fd != -1)
                    429:                write(tty_log_fd, buf, len);
1.244     nicm      430:        if (tty->flags & TTY_STARTED)
                    431:                event_add(&tty->event_out, NULL);
1.243     nicm      432: }
                    433:
1.106     nicm      434: void
1.1       nicm      435: tty_puts(struct tty *tty, const char *s)
                    436: {
1.243     nicm      437:        if (*s != '\0')
                    438:                tty_add(tty, s, strlen(s));
1.1       nicm      439: }
                    440:
                    441: void
                    442: tty_putc(struct tty *tty, u_char ch)
                    443: {
1.90      nicm      444:        const char      *acs;
1.1       nicm      445:
1.90      nicm      446:        if (tty->cell.attr & GRID_ATTR_CHARSET) {
                    447:                acs = tty_acs_get(tty, ch);
1.243     nicm      448:                if (acs != NULL)
                    449:                        tty_add(tty, acs, strlen(acs));
                    450:                else
                    451:                        tty_add(tty, &ch, 1);
                    452:        } else
                    453:                tty_add(tty, &ch, 1);
1.1       nicm      454:
                    455:        if (ch >= 0x20 && ch != 0x7f) {
1.211     nicm      456:                if (tty->cx >= tty->sx) {
1.46      nicm      457:                        tty->cx = 1;
                    458:                        if (tty->cy != tty->rlower)
                    459:                                tty->cy++;
1.211     nicm      460:
                    461:                        /*
                    462:                         * On !xenl terminals, force the cursor position to
                    463:                         * where we think it should be after a line wrap - this
                    464:                         * means it works on sensible terminals as well.
                    465:                         */
                    466:                        if (tty->term->flags & TERM_EARLYWRAP)
                    467:                                tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
1.1       nicm      468:                } else
                    469:                        tty->cx++;
                    470:        }
                    471: }
                    472:
                    473: void
1.147     nicm      474: tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
1.5       nicm      475: {
1.243     nicm      476:        tty_add(tty, buf, len);
1.147     nicm      477:        tty->cx += width;
1.5       nicm      478: }
                    479:
1.207     nicm      480: static void
1.180     nicm      481: tty_set_italics(struct tty *tty)
                    482: {
                    483:        const char      *s;
                    484:
                    485:        if (tty_term_has(tty->term, TTYC_SITM)) {
1.191     nicm      486:                s = options_get_string(global_options, "default-terminal");
1.180     nicm      487:                if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
                    488:                        tty_putcode(tty, TTYC_SITM);
                    489:                        return;
                    490:                }
                    491:        }
                    492:        tty_putcode(tty, TTYC_SMSO);
                    493: }
                    494:
                    495: void
1.1       nicm      496: tty_set_title(struct tty *tty, const char *title)
                    497: {
1.105     nicm      498:        if (!tty_term_has(tty->term, TTYC_TSL) ||
                    499:            !tty_term_has(tty->term, TTYC_FSL))
1.1       nicm      500:                return;
                    501:
1.105     nicm      502:        tty_putcode(tty, TTYC_TSL);
1.1       nicm      503:        tty_puts(tty, title);
1.105     nicm      504:        tty_putcode(tty, TTYC_FSL);
1.1       nicm      505: }
                    506:
1.208     nicm      507: static void
1.107     nicm      508: tty_force_cursor_colour(struct tty *tty, const char *ccolour)
                    509: {
                    510:        if (*ccolour == '\0')
                    511:                tty_putcode(tty, TTYC_CR);
                    512:        else
1.160     nicm      513:                tty_putcode_ptr1(tty, TTYC_CS, ccolour);
1.138     nicm      514:        free(tty->ccolour);
1.107     nicm      515:        tty->ccolour = xstrdup(ccolour);
                    516: }
                    517:
                    518: void
                    519: tty_update_mode(struct tty *tty, int mode, struct screen *s)
1.1       nicm      520: {
                    521:        int     changed;
                    522:
1.197     nicm      523:        if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
1.107     nicm      524:                tty_force_cursor_colour(tty, s->ccolour);
                    525:
1.1       nicm      526:        if (tty->flags & TTY_NOCURSOR)
                    527:                mode &= ~MODE_CURSOR;
                    528:
                    529:        changed = mode ^ tty->mode;
1.183     nicm      530:        if (changed & MODE_BLINKING) {
                    531:                if (tty_term_has(tty->term, TTYC_CVVIS))
                    532:                        tty_putcode(tty, TTYC_CVVIS);
                    533:                else
                    534:                        tty_putcode(tty, TTYC_CNORM);
                    535:                changed |= MODE_CURSOR;
                    536:        }
                    537:        if (changed & MODE_CURSOR) {
                    538:                if (mode & MODE_CURSOR)
                    539:                        tty_putcode(tty, TTYC_CNORM);
                    540:                else
1.1       nicm      541:                        tty_putcode(tty, TTYC_CIVIS);
1.108     nicm      542:        }
1.181     nicm      543:        if (s != NULL && tty->cstyle != s->cstyle) {
1.160     nicm      544:                if (tty_term_has(tty->term, TTYC_SS)) {
1.108     nicm      545:                        if (s->cstyle == 0 &&
1.160     nicm      546:                            tty_term_has(tty->term, TTYC_SE))
                    547:                                tty_putcode(tty, TTYC_SE);
1.108     nicm      548:                        else
1.160     nicm      549:                                tty_putcode1(tty, TTYC_SS, s->cstyle);
1.108     nicm      550:                }
                    551:                tty->cstyle = s->cstyle;
1.1       nicm      552:        }
1.195     nicm      553:        if (changed & ALL_MOUSE_MODES) {
1.94      nicm      554:                if (mode & ALL_MOUSE_MODES) {
1.153     nicm      555:                        /*
                    556:                         * Enable the SGR (1006) extension unconditionally, as
1.221     nicm      557:                         * it is safe from misinterpretation.
1.153     nicm      558:                         */
                    559:                        tty_puts(tty, "\033[?1006h");
1.225     nicm      560:                        if (mode & MODE_MOUSE_ALL)
                    561:                                tty_puts(tty, "\033[?1003h");
                    562:                        else if (mode & MODE_MOUSE_BUTTON)
1.94      nicm      563:                                tty_puts(tty, "\033[?1002h");
1.98      nicm      564:                        else if (mode & MODE_MOUSE_STANDARD)
                    565:                                tty_puts(tty, "\033[?1000h");
1.86      nicm      566:                } else {
1.225     nicm      567:                        if (tty->mode & MODE_MOUSE_ALL)
                    568:                                tty_puts(tty, "\033[?1003l");
                    569:                        else if (tty->mode & MODE_MOUSE_BUTTON)
1.94      nicm      570:                                tty_puts(tty, "\033[?1002l");
1.98      nicm      571:                        else if (tty->mode & MODE_MOUSE_STANDARD)
                    572:                                tty_puts(tty, "\033[?1000l");
1.153     nicm      573:                        tty_puts(tty, "\033[?1006l");
1.86      nicm      574:                }
1.115     nicm      575:        }
                    576:        if (changed & MODE_BRACKETPASTE) {
                    577:                if (mode & MODE_BRACKETPASTE)
                    578:                        tty_puts(tty, "\033[?2004h");
                    579:                else
                    580:                        tty_puts(tty, "\033[?2004l");
1.1       nicm      581:        }
                    582:        tty->mode = mode;
                    583: }
                    584:
1.207     nicm      585: static void
1.168     nicm      586: tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
                    587:     enum tty_code_code code1, u_int n)
1.1       nicm      588: {
                    589:        if (tty_term_has(tty->term, code))
                    590:                tty_putcode1(tty, code, n);
                    591:        else {
                    592:                while (n-- > 0)
                    593:                        tty_putcode(tty, code1);
                    594:        }
                    595: }
                    596:
1.207     nicm      597: static void
1.133     nicm      598: tty_repeat_space(struct tty *tty, u_int n)
                    599: {
                    600:        while (n-- > 0)
                    601:                tty_putc(tty, ' ');
                    602: }
                    603:
1.1       nicm      604: /*
1.119     nicm      605:  * Is the region large enough to be worth redrawing once later rather than
                    606:  * probably several times now? Currently yes if it is more than 50% of the
                    607:  * pane.
                    608:  */
1.207     nicm      609: static int
1.194     nicm      610: tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1.119     nicm      611: {
                    612:        struct window_pane      *wp = ctx->wp;
                    613:
                    614:        return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2);
                    615: }
                    616:
                    617: /*
1.176     nicm      618:  * Return if BCE is needed but the terminal doesn't have it - it'll need to be
                    619:  * emulated.
                    620:  */
1.207     nicm      621: static int
1.210     nicm      622: tty_fake_bce(const struct tty *tty, const struct window_pane *wp, u_int bg)
1.176     nicm      623: {
                    624:        struct grid_cell        gc;
                    625:
1.210     nicm      626:        if (tty_term_flag(tty->term, TTYC_BCE))
                    627:                return (0);
                    628:
1.176     nicm      629:        memcpy(&gc, &grid_default_cell, sizeof gc);
1.203     nicm      630:        if (wp != NULL)
                    631:                tty_default_colours(&gc, wp);
1.176     nicm      632:
1.210     nicm      633:        if (bg != 8 || gc.bg != 8)
                    634:                return (1);
                    635:        return (0);
1.176     nicm      636: }
                    637:
                    638: /*
1.1       nicm      639:  * Redraw scroll region using data from screen (already updated). Used when
                    640:  * CSR not supported, or window is a pane that doesn't take up the full
                    641:  * width of the terminal.
                    642:  */
1.207     nicm      643: static void
1.24      nicm      644: tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      645: {
1.14      nicm      646:        struct window_pane      *wp = ctx->wp;
                    647:        struct screen           *s = wp->screen;
1.204     nicm      648:        u_int                    i;
1.1       nicm      649:
                    650:        /*
1.119     nicm      651:         * If region is large, schedule a window redraw. In most cases this is
                    652:         * likely to be followed by some more scrolling.
1.1       nicm      653:         */
1.119     nicm      654:        if (tty_large_region(tty, ctx)) {
1.1       nicm      655:                wp->flags |= PANE_REDRAW;
                    656:                return;
                    657:        }
                    658:
1.14      nicm      659:        if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
                    660:                for (i = ctx->ocy; i < screen_size_y(s); i++)
1.176     nicm      661:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      662:        } else {
1.14      nicm      663:                for (i = ctx->orupper; i <= ctx->orlower; i++)
1.176     nicm      664:                        tty_draw_pane(tty, wp, i, ctx->xoff, ctx->yoff);
1.1       nicm      665:        }
                    666: }
                    667:
                    668: void
1.176     nicm      669: tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
                    670:     u_int oy)
                    671: {
                    672:        tty_draw_line(tty, wp, wp->screen, py, ox, oy);
                    673: }
                    674:
                    675: void
                    676: tty_draw_line(struct tty *tty, const struct window_pane *wp,
                    677:     struct screen *s, u_int py, u_int ox, u_int oy)
1.1       nicm      678: {
1.250     nicm      679:        struct grid_cell         gc, last;
                    680:        u_int                    i, j, sx, width;
                    681:        int                      flags = (tty->flags & TTY_NOCURSOR);
                    682:        char                     buf[512];
                    683:        size_t                   len;
1.1       nicm      684:
1.181     nicm      685:        tty->flags |= TTY_NOCURSOR;
                    686:        tty_update_mode(tty, tty->mode, s);
1.35      nicm      687:
1.214     nicm      688:        tty_region_off(tty);
                    689:        tty_margin_off(tty);
                    690:
1.1       nicm      691:        sx = screen_size_x(s);
1.250     nicm      692:        if (sx > s->grid->linedata[s->grid->hsize + py].cellused)
                    693:                sx = s->grid->linedata[s->grid->hsize + py].cellused;
1.1       nicm      694:        if (sx > tty->sx)
                    695:                sx = tty->sx;
                    696:
1.250     nicm      697:        tty_cursor(tty, ox, oy + py);
                    698:
                    699:        memcpy(&last, &grid_default_cell, sizeof last);
                    700:        len = 0;
                    701:        width = 0;
1.46      nicm      702:
1.1       nicm      703:        for (i = 0; i < sx; i++) {
1.193     nicm      704:                grid_view_get_cell(s->grid, i, py, &gc);
1.250     nicm      705:                if (len != 0 &&
1.251     nicm      706:                    (((~tty->flags & TTY_UTF8) &&
                    707:                    (gc.data.size != 1 ||
                    708:                    *gc.data.data >= 0x7f ||
                    709:                    gc.data.width != 1)) ||
                    710:                    (gc.attr & GRID_ATTR_CHARSET) ||
1.250     nicm      711:                    gc.flags != last.flags ||
                    712:                    gc.attr != last.attr ||
                    713:                    gc.fg != last.fg ||
                    714:                    gc.bg != last.bg ||
                    715:                    (sizeof buf) - len < gc.data.size)) {
                    716:                        tty_attributes(tty, &last, wp);
                    717:                        tty_putn(tty, buf, len, width);
                    718:
                    719:                        len = 0;
                    720:                        width = 0;
                    721:                }
                    722:
                    723:                if (gc.flags & GRID_FLAG_SELECTED)
                    724:                        screen_select_cell(s, &last, &gc);
                    725:                else
                    726:                        memcpy(&last, &gc, sizeof last);
1.251     nicm      727:                if (((~tty->flags & TTY_UTF8) &&
                    728:                    (gc.data.size != 1 ||
                    729:                    *gc.data.data >= 0x7f ||
                    730:                    gc.data.width != 1)) ||
                    731:                    (gc.attr & GRID_ATTR_CHARSET)) {
1.250     nicm      732:                        tty_attributes(tty, &last, wp);
1.251     nicm      733:                        if (~tty->flags & TTY_UTF8) {
                    734:                                for (j = 0; j < gc.data.width; j++)
                    735:                                        tty_putc(tty, '_');
                    736:                        } else {
                    737:                                for (j = 0; j < gc.data.size; j++)
                    738:                                        tty_putc(tty, gc.data.data[j]);
                    739:                        }
1.250     nicm      740:                } else {
                    741:                        memcpy(buf + len, gc.data.data, gc.data.size);
                    742:                        len += gc.data.size;
                    743:                        width += gc.data.width;
                    744:                }
                    745:        }
                    746:        if (len != 0) {
                    747:                tty_attributes(tty, &last, wp);
                    748:                tty_putn(tty, buf, len, width);
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);
1.244     nicm      773:        if (c->flags & (CLIENT_REDRAW|CLIENT_SUSPENDED))
1.182     nicm      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);
1.133     nicm      924:        else
1.229     nicm      925:                tty_repeat_space(tty, sx);
1.1       nicm      926: }
                    927:
                    928: void
1.24      nicm      929: tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      930: {
1.77      nicm      931:        struct window_pane      *wp = ctx->wp;
1.12      nicm      932:        struct screen           *s = wp->screen;
1.229     nicm      933:        u_int                    sx = screen_size_x(s);
1.1       nicm      934:
1.210     nicm      935:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      936:
1.41      nicm      937:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                    938:
1.176     nicm      939:        if (tty_pane_full_width(tty, ctx) &&
1.210     nicm      940:            tty_term_has(tty->term, TTYC_EL) &&
                    941:            !tty_fake_bce(tty, wp, ctx->bg))
1.1       nicm      942:                tty_putcode(tty, TTYC_EL);
1.133     nicm      943:        else
1.229     nicm      944:                tty_repeat_space(tty, sx - ctx->ocx);
1.1       nicm      945: }
                    946:
                    947: void
1.24      nicm      948: tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      949: {
1.210     nicm      950:        struct window_pane      *wp = ctx->wp;
                    951:
                    952:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm      953:
1.210     nicm      954:        if (ctx->xoff == 0 &&
                    955:            tty_term_has(tty->term, TTYC_EL1) &&
1.238     nicm      956:            !tty_fake_bce(tty, ctx->wp, ctx->bg)) {
                    957:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm      958:                tty_putcode(tty, TTYC_EL1);
1.238     nicm      959:        } else {
                    960:                tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm      961:                tty_repeat_space(tty, ctx->ocx + 1);
1.238     nicm      962:        }
1.1       nicm      963: }
                    964:
                    965: void
1.24      nicm      966: tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      967: {
1.56      nicm      968:        if (ctx->ocy != ctx->orupper)
                    969:                return;
                    970:
1.210     nicm      971:        if (!tty_pane_full_width(tty, ctx) ||
                    972:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.70      nicm      973:            !tty_term_has(tty->term, TTYC_CSR) ||
                    974:            !tty_term_has(tty->term, TTYC_RI)) {
1.14      nicm      975:                tty_redraw_region(tty, ctx);
1.1       nicm      976:                return;
                    977:        }
                    978:
1.176     nicm      979:        tty_attributes(tty, &grid_default_cell, ctx->wp);
1.77      nicm      980:
1.56      nicm      981:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm      982:        tty_margin_off(tty);
1.56      nicm      983:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1.77      nicm      984:
1.56      nicm      985:        tty_putcode(tty, TTYC_RI);
1.1       nicm      986: }
                    987:
                    988: void
1.24      nicm      989: tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      990: {
1.77      nicm      991:        struct window_pane      *wp = ctx->wp;
1.1       nicm      992:
1.56      nicm      993:        if (ctx->ocy != ctx->orlower)
                    994:                return;
                    995:
1.212     nicm      996:        if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.210     nicm      997:            tty_fake_bce(tty, wp, ctx->bg) ||
1.1       nicm      998:            !tty_term_has(tty->term, TTYC_CSR)) {
1.236     nicm      999:                tty_redraw_region(tty, ctx);
1.1       nicm     1000:                return;
                   1001:        }
1.52      nicm     1002:
1.176     nicm     1003:        tty_attributes(tty, &grid_default_cell, wp);
1.77      nicm     1004:
1.56      nicm     1005:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.212     nicm     1006:        tty_margin_pane(tty, ctx);
                   1007:
                   1008:        /*
                   1009:         * If we want to wrap a pane, the cursor needs to be exactly on the
                   1010:         * right of the region. But if the pane isn't on the right, it may be
                   1011:         * off the edge - if so, move the cursor back to the right.
                   1012:         */
                   1013:        if (ctx->xoff + ctx->ocx > tty->rright)
1.216     nicm     1014:                tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
1.212     nicm     1015:        else
                   1016:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.77      nicm     1017:
1.56      nicm     1018:        tty_putc(tty, '\n');
1.240     nicm     1019: }
                   1020:
                   1021: void
                   1022: tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
                   1023: {
                   1024:        struct window_pane      *wp = ctx->wp;
                   1025:        u_int                    i;
                   1026:
                   1027:        if ((!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
                   1028:            tty_fake_bce(tty, wp, ctx->bg) ||
                   1029:            !tty_term_has(tty->term, TTYC_CSR)) {
                   1030:                tty_redraw_region(tty, ctx);
                   1031:                return;
                   1032:        }
                   1033:
                   1034:        tty_attributes(tty, &grid_default_cell, wp);
                   1035:
                   1036:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1037:        tty_margin_pane(tty, ctx);
                   1038:
                   1039:        if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1.241     nicm     1040:                tty_cursor(tty, tty->rright, tty->rlower);
1.240     nicm     1041:                for (i = 0; i < ctx->num; i++)
                   1042:                        tty_putc(tty, '\n');
                   1043:        } else
                   1044:                tty_putcode1(tty, TTYC_INDN, ctx->num);
1.1       nicm     1045: }
                   1046:
                   1047: void
1.24      nicm     1048: tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1049: {
1.77      nicm     1050:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1051:        struct screen           *s = wp->screen;
1.204     nicm     1052:        u_int                    i, j;
1.229     nicm     1053:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1054:
1.210     nicm     1055:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1056:
1.229     nicm     1057:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1058:        tty_margin_off(tty);
1.39      nicm     1059:
1.176     nicm     1060:        if (tty_pane_full_width(tty, ctx) &&
1.248     nicm     1061:            ctx->yoff + wp->sy >= tty->sy - 1 &&
1.229     nicm     1062:            status_at_line(tty->client) <= 0 &&
                   1063:            tty_term_has(tty->term, TTYC_ED)) {
                   1064:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1065:                tty_putcode(tty, TTYC_ED);
                   1066:        } else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1067:            tty_term_has(tty->term, TTYC_EL) &&
                   1068:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1069:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1070:                tty_putcode(tty, TTYC_EL);
1.229     nicm     1071:                if (ctx->ocy != sy - 1) {
1.41      nicm     1072:                        tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
1.229     nicm     1073:                        for (i = ctx->ocy + 1; i < sy; i++) {
1.1       nicm     1074:                                tty_putcode(tty, TTYC_EL);
1.229     nicm     1075:                                if (i == sy - 1)
1.1       nicm     1076:                                        continue;
                   1077:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1078:                                tty->cy++;
                   1079:                        }
                   1080:                }
                   1081:        } else {
1.229     nicm     1082:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1083:                tty_repeat_space(tty, sx - ctx->ocx);
                   1084:                for (j = ctx->ocy + 1; j < sy; j++) {
1.41      nicm     1085:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1086:                        tty_repeat_space(tty, sx);
1.1       nicm     1087:                }
                   1088:        }
                   1089: }
                   1090:
                   1091: void
1.24      nicm     1092: tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1093: {
1.77      nicm     1094:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1095:        struct screen           *s = wp->screen;
1.204     nicm     1096:        u_int                    i, j;
1.229     nicm     1097:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1098:
1.227     nicm     1099:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1100:
1.229     nicm     1101:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1102:        tty_margin_off(tty);
1.39      nicm     1103:
1.230     nicm     1104:        if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1105:            tty_term_has(tty->term, TTYC_EL) &&
                   1106:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1107:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1108:                for (i = 0; i < ctx->ocy; i++) {
1.1       nicm     1109:                        tty_putcode(tty, TTYC_EL);
                   1110:                        tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1111:                        tty->cy++;
                   1112:                }
                   1113:        } else {
1.229     nicm     1114:                tty_cursor_pane(tty, ctx, 0, 0);
1.14      nicm     1115:                for (j = 0; j < ctx->ocy; j++) {
1.41      nicm     1116:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1117:                        tty_repeat_space(tty, sx);
1.1       nicm     1118:                }
                   1119:        }
1.229     nicm     1120:        tty_cursor_pane(tty, ctx, 0, ctx->ocy);
1.133     nicm     1121:        tty_repeat_space(tty, ctx->ocx + 1);
1.1       nicm     1122: }
                   1123:
                   1124: void
1.24      nicm     1125: tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1126: {
1.77      nicm     1127:        struct window_pane      *wp = ctx->wp;
1.12      nicm     1128:        struct screen           *s = wp->screen;
1.204     nicm     1129:        u_int                    i, j;
1.229     nicm     1130:        u_int                    sx = screen_size_x(s), sy = screen_size_y(s);
1.1       nicm     1131:
1.210     nicm     1132:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1133:
1.229     nicm     1134:        tty_region_pane(tty, ctx, 0, sy - 1);
1.214     nicm     1135:        tty_margin_off(tty);
1.39      nicm     1136:
1.176     nicm     1137:        if (tty_pane_full_width(tty, ctx) &&
1.229     nicm     1138:            status_at_line(tty->client) <= 0 &&
                   1139:            tty_term_has(tty->term, TTYC_ED)) {
                   1140:                tty_cursor_pane(tty, ctx, 0, 0);
                   1141:                tty_putcode(tty, TTYC_ED);
1.230     nicm     1142:        } else if (tty_pane_full_width(tty, ctx) &&
1.210     nicm     1143:            tty_term_has(tty->term, TTYC_EL) &&
                   1144:            !tty_fake_bce(tty, wp, ctx->bg)) {
1.229     nicm     1145:                tty_cursor_pane(tty, ctx, 0, 0);
                   1146:                for (i = 0; i < sy; i++) {
1.1       nicm     1147:                        tty_putcode(tty, TTYC_EL);
1.229     nicm     1148:                        if (i != sy - 1) {
1.1       nicm     1149:                                tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
                   1150:                                tty->cy++;
                   1151:                        }
                   1152:                }
                   1153:        } else {
1.229     nicm     1154:                tty_cursor_pane(tty, ctx, 0, 0);
                   1155:                for (j = 0; j < sy; j++) {
1.41      nicm     1156:                        tty_cursor_pane(tty, ctx, 0, j);
1.229     nicm     1157:                        tty_repeat_space(tty, sx);
1.1       nicm     1158:                }
1.4       nicm     1159:        }
                   1160: }
                   1161:
                   1162: void
1.24      nicm     1163: tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1.4       nicm     1164: {
1.12      nicm     1165:        struct window_pane      *wp = ctx->wp;
                   1166:        struct screen           *s = wp->screen;
                   1167:        u_int                    i, j;
1.4       nicm     1168:
1.176     nicm     1169:        tty_attributes(tty, &grid_default_cell, wp);
1.4       nicm     1170:
1.39      nicm     1171:        tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
1.214     nicm     1172:        tty_margin_off(tty);
1.4       nicm     1173:
                   1174:        for (j = 0; j < screen_size_y(s); j++) {
1.41      nicm     1175:                tty_cursor_pane(tty, ctx, 0, j);
1.4       nicm     1176:                for (i = 0; i < screen_size_x(s); i++)
                   1177:                        tty_putc(tty, 'E');
1.1       nicm     1178:        }
                   1179: }
                   1180:
                   1181: void
1.24      nicm     1182: tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1183: {
1.222     nicm     1184:        if (ctx->xoff + ctx->ocx > tty->sx - 1 && ctx->ocy == ctx->orlower) {
                   1185:                if (tty_pane_full_width(tty, ctx))
                   1186:                        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1187:                else
                   1188:                        tty_margin_off(tty);
                   1189:        }
1.46      nicm     1190:
1.233     nicm     1191:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1192:
1.237     nicm     1193:        tty_cell(tty, ctx->cell, ctx->wp);
1.239     nicm     1194: }
                   1195:
                   1196: void
                   1197: tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
                   1198: {
                   1199:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1200:
                   1201:        tty_attributes(tty, ctx->cell, ctx->wp);
                   1202:        tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
1.106     nicm     1203: }
                   1204:
                   1205: void
                   1206: tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
                   1207: {
                   1208:        char    *buf;
                   1209:        size_t   off;
                   1210:
                   1211:        if (!tty_term_has(tty->term, TTYC_MS))
                   1212:                return;
                   1213:
                   1214:        off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
                   1215:        buf = xmalloc(off);
                   1216:
                   1217:        b64_ntop(ctx->ptr, ctx->num, buf, off);
                   1218:        tty_putcode_ptr2(tty, TTYC_MS, "", buf);
                   1219:
1.138     nicm     1220:        free(buf);
1.100     nicm     1221: }
                   1222:
                   1223: void
                   1224: tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
                   1225: {
                   1226:        u_int    i;
                   1227:        u_char  *str = ctx->ptr;
                   1228:
                   1229:        for (i = 0; i < ctx->num; i++)
                   1230:                tty_putc(tty, str[i]);
1.242     nicm     1231:        tty_invalidate(tty);
1.1       nicm     1232: }
                   1233:
1.207     nicm     1234: static void
1.176     nicm     1235: tty_cell(struct tty *tty, const struct grid_cell *gc,
                   1236:     const struct window_pane *wp)
1.1       nicm     1237: {
1.193     nicm     1238:        u_int   i;
1.1       nicm     1239:
                   1240:        /* Skip last character if terminal is stupid. */
1.211     nicm     1241:        if ((tty->term->flags & TERM_EARLYWRAP) &&
                   1242:            tty->cy == tty->sy - 1 &&
                   1243:            tty->cx == tty->sx - 1)
1.1       nicm     1244:                return;
                   1245:
                   1246:        /* If this is a padding character, do nothing. */
                   1247:        if (gc->flags & GRID_FLAG_PADDING)
                   1248:                return;
                   1249:
                   1250:        /* Set the attributes. */
1.176     nicm     1251:        tty_attributes(tty, gc, wp);
1.1       nicm     1252:
1.147     nicm     1253:        /* Get the cell and if ASCII write with putc to do ACS translation. */
1.193     nicm     1254:        if (gc->data.size == 1) {
                   1255:                if (*gc->data.data < 0x20 || *gc->data.data == 0x7f)
1.1       nicm     1256:                        return;
1.193     nicm     1257:                tty_putc(tty, *gc->data.data);
1.1       nicm     1258:                return;
                   1259:        }
                   1260:
1.147     nicm     1261:        /* If not UTF-8, write _. */
1.1       nicm     1262:        if (!(tty->flags & TTY_UTF8)) {
1.193     nicm     1263:                for (i = 0; i < gc->data.width; i++)
1.1       nicm     1264:                        tty_putc(tty, '_');
                   1265:                return;
                   1266:        }
                   1267:
1.147     nicm     1268:        /* Write the data. */
1.193     nicm     1269:        tty_putn(tty, gc->data.data, gc->data.size, gc->data.width);
1.1       nicm     1270: }
                   1271:
                   1272: void
                   1273: tty_reset(struct tty *tty)
                   1274: {
                   1275:        struct grid_cell        *gc = &tty->cell;
                   1276:
1.228     nicm     1277:        if (!grid_cells_equal(gc, &grid_default_cell)) {
                   1278:                if ((gc->attr & GRID_ATTR_CHARSET) && tty_use_acs(tty))
                   1279:                        tty_putcode(tty, TTYC_RMACS);
                   1280:                tty_putcode(tty, TTYC_SGR0);
                   1281:                memcpy(gc, &grid_default_cell, sizeof *gc);
                   1282:        }
1.1       nicm     1283:
1.228     nicm     1284:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   1285:        tty->last_wp = -1;
1.242     nicm     1286: }
                   1287:
                   1288: static void
                   1289: tty_invalidate(struct tty *tty)
                   1290: {
                   1291:        memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
                   1292:
                   1293:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   1294:        tty->last_wp = -1;
                   1295:
                   1296:        tty->cx = tty->cy = UINT_MAX;
                   1297:
                   1298:        tty->rupper = tty->rleft = UINT_MAX;
                   1299:        tty->rlower = tty->rright = UINT_MAX;
                   1300:
                   1301:        if (tty->flags & TTY_STARTED) {
                   1302:                tty_putcode(tty, TTYC_SGR0);
                   1303:
                   1304:                tty->mode = ALL_MODES;
                   1305:                tty_update_mode(tty, MODE_CURSOR, NULL);
                   1306:
                   1307:                tty_cursor(tty, 0, 0);
                   1308:                tty_region_off(tty);
                   1309:                tty_margin_off(tty);
                   1310:        } else
                   1311:                tty->mode = MODE_CURSOR;
1.1       nicm     1312: }
                   1313:
1.214     nicm     1314: /* Turn off margin. */
                   1315: void
                   1316: tty_region_off(struct tty *tty)
                   1317: {
                   1318:        tty_region(tty, 0, tty->sy - 1);
                   1319: }
                   1320:
1.40      nicm     1321: /* Set region inside pane. */
1.208     nicm     1322: static void
1.196     nicm     1323: tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
                   1324:     u_int rlower)
1.1       nicm     1325: {
1.113     nicm     1326:        tty_region(tty, ctx->yoff + rupper, ctx->yoff + rlower);
1.39      nicm     1327: }
                   1328:
1.40      nicm     1329: /* Set region at absolute position. */
1.214     nicm     1330: static void
1.40      nicm     1331: tty_region(struct tty *tty, u_int rupper, u_int rlower)
1.39      nicm     1332: {
                   1333:        if (tty->rlower == rlower && tty->rupper == rupper)
                   1334:                return;
1.1       nicm     1335:        if (!tty_term_has(tty->term, TTYC_CSR))
                   1336:                return;
1.39      nicm     1337:
                   1338:        tty->rupper = rupper;
                   1339:        tty->rlower = rlower;
1.55      nicm     1340:
                   1341:        /*
                   1342:         * Some terminals (such as PuTTY) do not correctly reset the cursor to
                   1343:         * 0,0 if it is beyond the last column (they do not reset their wrap
                   1344:         * flag so further output causes a line feed). As a workaround, do an
                   1345:         * explicit move to 0 first.
                   1346:         */
                   1347:        if (tty->cx >= tty->sx)
                   1348:                tty_cursor(tty, 0, tty->cy);
1.42      nicm     1349:
1.39      nicm     1350:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.249     nicm     1351:        tty->cx = tty->cy = UINT_MAX;
1.212     nicm     1352: }
                   1353:
1.214     nicm     1354: /* Turn off margin. */
                   1355: void
                   1356: tty_margin_off(struct tty *tty)
                   1357: {
                   1358:        tty_margin(tty, 0, tty->sx - 1);
                   1359: }
                   1360:
1.212     nicm     1361: /* Set margin inside pane. */
                   1362: static void
                   1363: tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
                   1364: {
                   1365:        tty_margin(tty, ctx->xoff, ctx->xoff + ctx->wp->sx - 1);
                   1366: }
                   1367:
                   1368: /* Set margin at absolute position. */
1.214     nicm     1369: static void
1.212     nicm     1370: tty_margin(struct tty *tty, u_int rleft, u_int rright)
                   1371: {
                   1372:        char s[64];
                   1373:
                   1374:        if (!tty_use_margin(tty))
                   1375:                return;
                   1376:        if (tty->rleft == rleft && tty->rright == rright)
                   1377:                return;
                   1378:
1.232     nicm     1379:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.231     nicm     1380:
1.212     nicm     1381:        tty->rleft = rleft;
                   1382:        tty->rright = rright;
                   1383:
1.232     nicm     1384:        if (rleft == 0 && rright == tty->sx - 1)
                   1385:                snprintf(s, sizeof s, "\033[s");
                   1386:        else
                   1387:                snprintf(s, sizeof s, "\033[%u;%us", rleft + 1, rright + 1);
1.212     nicm     1388:        tty_puts(tty, s);
1.249     nicm     1389:        tty->cx = tty->cy = UINT_MAX;
1.1       nicm     1390: }
                   1391:
1.42      nicm     1392: /* Move cursor inside pane. */
1.208     nicm     1393: static void
1.41      nicm     1394: tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
                   1395: {
1.113     nicm     1396:        tty_cursor(tty, ctx->xoff + cx, ctx->yoff + cy);
1.41      nicm     1397: }
                   1398:
1.42      nicm     1399: /* Move cursor to absolute position. */
1.41      nicm     1400: void
                   1401: tty_cursor(struct tty *tty, u_int cx, u_int cy)
1.1       nicm     1402: {
1.42      nicm     1403:        struct tty_term *term = tty->term;
                   1404:        u_int            thisx, thisy;
                   1405:        int              change;
1.77      nicm     1406:
1.42      nicm     1407:        if (cx > tty->sx - 1)
                   1408:                cx = tty->sx - 1;
                   1409:
                   1410:        thisx = tty->cx;
                   1411:        thisy = tty->cy;
                   1412:
                   1413:        /* No change. */
                   1414:        if (cx == thisx && cy == thisy)
                   1415:                return;
                   1416:
1.43      nicm     1417:        /* Very end of the line, just use absolute movement. */
                   1418:        if (thisx > tty->sx - 1)
                   1419:                goto absolute;
                   1420:
1.42      nicm     1421:        /* Move to home position (0, 0). */
                   1422:        if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
                   1423:                tty_putcode(tty, TTYC_HOME);
                   1424:                goto out;
                   1425:        }
                   1426:
                   1427:        /* Zero on the next line. */
1.48      nicm     1428:        if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower) {
1.1       nicm     1429:                tty_putc(tty, '\r');
1.42      nicm     1430:                tty_putc(tty, '\n');
                   1431:                goto out;
                   1432:        }
                   1433:
1.45      nicm     1434:        /* Moving column or row. */
1.42      nicm     1435:        if (cy == thisy) {
1.45      nicm     1436:                /*
                   1437:                 * Moving column only, row staying the same.
                   1438:                 */
                   1439:
1.42      nicm     1440:                /* To left edge. */
1.202     nicm     1441:                if (cx == 0) {
1.42      nicm     1442:                        tty_putc(tty, '\r');
                   1443:                        goto out;
                   1444:                }
                   1445:
                   1446:                /* One to the left. */
                   1447:                if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
                   1448:                        tty_putcode(tty, TTYC_CUB1);
                   1449:                        goto out;
                   1450:                }
                   1451:
                   1452:                /* One to the right. */
                   1453:                if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
                   1454:                        tty_putcode(tty, TTYC_CUF1);
                   1455:                        goto out;
                   1456:                }
                   1457:
                   1458:                /* Calculate difference. */
                   1459:                change = thisx - cx;    /* +ve left, -ve right */
                   1460:
                   1461:                /*
                   1462:                 * Use HPA if change is larger than absolute, otherwise move
                   1463:                 * the cursor with CUB/CUF.
                   1464:                 */
1.87      nicm     1465:                if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
1.42      nicm     1466:                        tty_putcode1(tty, TTYC_HPA, cx);
                   1467:                        goto out;
                   1468:                } else if (change > 0 && tty_term_has(term, TTYC_CUB)) {
1.202     nicm     1469:                        if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
                   1470:                                tty_putcode(tty, TTYC_CUB1);
                   1471:                                tty_putcode(tty, TTYC_CUB1);
                   1472:                                goto out;
                   1473:                        }
1.42      nicm     1474:                        tty_putcode1(tty, TTYC_CUB, change);
                   1475:                        goto out;
                   1476:                } else if (change < 0 && tty_term_has(term, TTYC_CUF)) {
                   1477:                        tty_putcode1(tty, TTYC_CUF, -change);
                   1478:                        goto out;
                   1479:                }
1.45      nicm     1480:        } else if (cx == thisx) {
                   1481:                /*
                   1482:                 * Moving row only, column staying the same.
                   1483:                 */
1.42      nicm     1484:
                   1485:                /* One above. */
1.77      nicm     1486:                if (thisy != tty->rupper &&
1.42      nicm     1487:                    cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
                   1488:                        tty_putcode(tty, TTYC_CUU1);
                   1489:                        goto out;
                   1490:                }
                   1491:
                   1492:                /* One below. */
1.49      nicm     1493:                if (thisy != tty->rlower &&
1.42      nicm     1494:                    cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
                   1495:                        tty_putcode(tty, TTYC_CUD1);
                   1496:                        goto out;
                   1497:                }
                   1498:
                   1499:                /* Calculate difference. */
                   1500:                change = thisy - cy;    /* +ve up, -ve down */
                   1501:
                   1502:                /*
1.77      nicm     1503:                 * Try to use VPA if change is larger than absolute or if this
                   1504:                 * change would cross the scroll region, otherwise use CUU/CUD.
1.42      nicm     1505:                 */
1.87      nicm     1506:                if ((u_int) abs(change) > cy ||
1.42      nicm     1507:                    (change < 0 && cy - change > tty->rlower) ||
1.44      nicm     1508:                    (change > 0 && cy - change < tty->rupper)) {
                   1509:                            if (tty_term_has(term, TTYC_VPA)) {
                   1510:                                    tty_putcode1(tty, TTYC_VPA, cy);
                   1511:                                    goto out;
                   1512:                            }
1.42      nicm     1513:                } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
                   1514:                        tty_putcode1(tty, TTYC_CUU, change);
                   1515:                        goto out;
                   1516:                } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
                   1517:                        tty_putcode1(tty, TTYC_CUD, -change);
                   1518:                        goto out;
                   1519:                }
                   1520:        }
                   1521:
1.43      nicm     1522: absolute:
1.42      nicm     1523:        /* Absolute movement. */
                   1524:        tty_putcode2(tty, TTYC_CUP, cy, cx);
                   1525:
                   1526: out:
                   1527:        tty->cx = cx;
                   1528:        tty->cy = cy;
1.1       nicm     1529: }
                   1530:
                   1531: void
1.176     nicm     1532: tty_attributes(struct tty *tty, const struct grid_cell *gc,
                   1533:     const struct window_pane *wp)
1.1       nicm     1534: {
1.63      nicm     1535:        struct grid_cell        *tc = &tty->cell, gc2;
1.85      nicm     1536:        u_char                   changed;
1.61      nicm     1537:
1.228     nicm     1538:        /* Ignore cell if it is the same as the last one. */
                   1539:        if (wp != NULL &&
                   1540:            (int)wp->id == tty->last_wp &&
                   1541:            ~(wp->window->flags & WINDOW_STYLECHANGED) &&
                   1542:            gc->attr == tty->last_cell.attr &&
                   1543:            gc->fg == tty->last_cell.fg &&
                   1544:            gc->bg == tty->last_cell.bg)
                   1545:                return;
                   1546:        tty->last_wp = (wp != NULL ? (int)wp->id : -1);
                   1547:        memcpy(&tty->last_cell, gc, sizeof tty->last_cell);
                   1548:
                   1549:        /* Copy cell and update default colours. */
1.85      nicm     1550:        memcpy(&gc2, gc, sizeof gc2);
1.203     nicm     1551:        if (wp != NULL)
                   1552:                tty_default_colours(&gc2, wp);
1.63      nicm     1553:
1.18      nicm     1554:        /*
                   1555:         * If no setab, try to use the reverse attribute as a best-effort for a
                   1556:         * non-default background. This is a bit of a hack but it doesn't do
                   1557:         * any serious harm and makes a couple of applications happier.
                   1558:         */
                   1559:        if (!tty_term_has(tty->term, TTYC_SETAB)) {
1.85      nicm     1560:                if (gc2.attr & GRID_ATTR_REVERSE) {
                   1561:                        if (gc2.fg != 7 && gc2.fg != 8)
1.64      nicm     1562:                                gc2.attr &= ~GRID_ATTR_REVERSE;
1.18      nicm     1563:                } else {
1.85      nicm     1564:                        if (gc2.bg != 0 && gc2.bg != 8)
1.64      nicm     1565:                                gc2.attr |= GRID_ATTR_REVERSE;
1.18      nicm     1566:                }
                   1567:        }
1.1       nicm     1568:
1.85      nicm     1569:        /* Fix up the colours if necessary. */
1.219     nicm     1570:        tty_check_fg(tty, wp, &gc2);
                   1571:        tty_check_bg(tty, wp, &gc2);
1.85      nicm     1572:
1.64      nicm     1573:        /* If any bits are being cleared, reset everything. */
1.85      nicm     1574:        if (tc->attr & ~gc2.attr)
1.64      nicm     1575:                tty_reset(tty);
                   1576:
                   1577:        /*
                   1578:         * Set the colours. This may call tty_reset() (so it comes next) and
                   1579:         * may add to (NOT remove) the desired attributes by changing new_attr.
                   1580:         */
1.85      nicm     1581:        tty_colours(tty, &gc2);
1.64      nicm     1582:
1.1       nicm     1583:        /* Filter out attribute bits already set. */
1.85      nicm     1584:        changed = gc2.attr & ~tc->attr;
                   1585:        tc->attr = gc2.attr;
1.1       nicm     1586:
                   1587:        /* Set the attributes. */
                   1588:        if (changed & GRID_ATTR_BRIGHT)
                   1589:                tty_putcode(tty, TTYC_BOLD);
                   1590:        if (changed & GRID_ATTR_DIM)
                   1591:                tty_putcode(tty, TTYC_DIM);
1.180     nicm     1592:        if (changed & GRID_ATTR_ITALICS)
                   1593:                tty_set_italics(tty);
1.1       nicm     1594:        if (changed & GRID_ATTR_UNDERSCORE)
                   1595:                tty_putcode(tty, TTYC_SMUL);
                   1596:        if (changed & GRID_ATTR_BLINK)
                   1597:                tty_putcode(tty, TTYC_BLINK);
                   1598:        if (changed & GRID_ATTR_REVERSE) {
                   1599:                if (tty_term_has(tty->term, TTYC_REV))
                   1600:                        tty_putcode(tty, TTYC_REV);
                   1601:                else if (tty_term_has(tty->term, TTYC_SMSO))
                   1602:                        tty_putcode(tty, TTYC_SMSO);
                   1603:        }
                   1604:        if (changed & GRID_ATTR_HIDDEN)
                   1605:                tty_putcode(tty, TTYC_INVIS);
1.90      nicm     1606:        if ((changed & GRID_ATTR_CHARSET) && tty_use_acs(tty))
1.1       nicm     1607:                tty_putcode(tty, TTYC_SMACS);
                   1608: }
                   1609:
1.207     nicm     1610: static void
1.85      nicm     1611: tty_colours(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1612: {
1.61      nicm     1613:        struct grid_cell        *tc = &tty->cell;
1.204     nicm     1614:        int                      have_ax;
1.61      nicm     1615:
                   1616:        /* No changes? Nothing is necessary. */
1.204     nicm     1617:        if (gc->fg == tc->fg && gc->bg == tc->bg)
1.63      nicm     1618:                return;
1.1       nicm     1619:
1.61      nicm     1620:        /*
                   1621:         * Is either the default colour? This is handled specially because the
                   1622:         * best solution might be to reset both colours to default, in which
                   1623:         * case if only one is default need to fall onward to set the other
                   1624:         * colour.
                   1625:         */
1.204     nicm     1626:        if (gc->fg == 8 || gc->bg == 8) {
1.61      nicm     1627:                /*
                   1628:                 * If don't have AX but do have op, send sgr0 (op can't
                   1629:                 * actually be used because it is sometimes the same as sgr0
                   1630:                 * and sometimes isn't). This resets both colours to default.
                   1631:                 *
                   1632:                 * Otherwise, try to set the default colour only as needed.
                   1633:                 */
1.174     nicm     1634:                have_ax = tty_term_flag(tty->term, TTYC_AX);
1.61      nicm     1635:                if (!have_ax && tty_term_has(tty->term, TTYC_OP))
                   1636:                        tty_reset(tty);
                   1637:                else {
1.204     nicm     1638:                        if (gc->fg == 8 && tc->fg != 8) {
1.61      nicm     1639:                                if (have_ax)
                   1640:                                        tty_puts(tty, "\033[39m");
1.204     nicm     1641:                                else if (tc->fg != 7)
1.61      nicm     1642:                                        tty_putcode1(tty, TTYC_SETAF, 7);
                   1643:                                tc->fg = 8;
                   1644:                        }
1.204     nicm     1645:                        if (gc->bg == 8 && tc->bg != 8) {
1.77      nicm     1646:                                if (have_ax)
1.61      nicm     1647:                                        tty_puts(tty, "\033[49m");
1.204     nicm     1648:                                else if (tc->bg != 0)
1.61      nicm     1649:                                        tty_putcode1(tty, TTYC_SETAB, 0);
                   1650:                                tc->bg = 8;
                   1651:                        }
                   1652:                }
                   1653:        }
1.1       nicm     1654:
1.61      nicm     1655:        /* Set the foreground colour. */
1.204     nicm     1656:        if (gc->fg != 8 && gc->fg != tc->fg)
1.85      nicm     1657:                tty_colours_fg(tty, gc);
1.1       nicm     1658:
1.61      nicm     1659:        /*
                   1660:         * Set the background colour. This must come after the foreground as
                   1661:         * tty_colour_fg() can call tty_reset().
                   1662:         */
1.204     nicm     1663:        if (gc->bg != 8 && gc->bg != tc->bg)
1.73      nicm     1664:                tty_colours_bg(tty, gc);
1.1       nicm     1665: }
                   1666:
1.219     nicm     1667: static void
                   1668: tty_check_fg(struct tty *tty, const struct window_pane *wp,
                   1669:     struct grid_cell *gc)
1.85      nicm     1670: {
1.204     nicm     1671:        u_char  r, g, b;
                   1672:        u_int   colours;
1.223     nicm     1673:        int     c;
1.85      nicm     1674:
1.219     nicm     1675:        /* Perform substitution if this pane has a palette */
                   1676:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1677:            (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1678:                gc->fg = c;
1.219     nicm     1679:
1.199     nicm     1680:        /* Is this a 24-bit colour? */
1.204     nicm     1681:        if (gc->fg & COLOUR_FLAG_RGB) {
1.199     nicm     1682:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1683:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1684:                        colour_split_rgb(gc->fg, &r, &g, &b);
                   1685:                        gc->fg = colour_find_rgb(r, g, b);
                   1686:                } else
1.200     nicm     1687:                        return;
1.199     nicm     1688:        }
1.224     nicm     1689:
                   1690:        /* How many colours does this terminal have? */
                   1691:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1692:                colours = 256;
                   1693:        else
                   1694:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1695:
1.85      nicm     1696:        /* Is this a 256-colour colour? */
1.204     nicm     1697:        if (gc->fg & COLOUR_FLAG_256) {
1.85      nicm     1698:                /* And not a 256 colour mode? */
1.224     nicm     1699:                if (colours != 256) {
1.85      nicm     1700:                        gc->fg = colour_256to16(gc->fg);
                   1701:                        if (gc->fg & 8) {
                   1702:                                gc->fg &= 7;
1.175     nicm     1703:                                if (colours >= 16)
                   1704:                                        gc->fg += 90;
                   1705:                                else
                   1706:                                        gc->attr |= GRID_ATTR_BRIGHT;
1.85      nicm     1707:                        } else
                   1708:                                gc->attr &= ~GRID_ATTR_BRIGHT;
                   1709:                }
                   1710:                return;
                   1711:        }
                   1712:
                   1713:        /* Is this an aixterm colour? */
                   1714:        if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
                   1715:                gc->fg -= 90;
                   1716:                gc->attr |= GRID_ATTR_BRIGHT;
                   1717:        }
                   1718: }
                   1719:
1.219     nicm     1720: static void
                   1721: tty_check_bg(struct tty *tty, const struct window_pane *wp,
                   1722:     struct grid_cell *gc)
1.85      nicm     1723: {
1.204     nicm     1724:        u_char  r, g, b;
                   1725:        u_int   colours;
1.223     nicm     1726:        int     c;
1.85      nicm     1727:
1.219     nicm     1728:        /* Perform substitution if this pane has a palette */
                   1729:        if ((~gc->flags & GRID_FLAG_NOPALETTE) &&
1.223     nicm     1730:            (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1731:                gc->bg = c;
1.219     nicm     1732:
1.199     nicm     1733:        /* Is this a 24-bit colour? */
1.204     nicm     1734:        if (gc->bg & COLOUR_FLAG_RGB) {
1.199     nicm     1735:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
                   1736:                if (!tty_term_flag(tty->term, TTYC_TC)) {
1.204     nicm     1737:                        colour_split_rgb(gc->bg, &r, &g, &b);
                   1738:                        gc->bg = colour_find_rgb(r, g, b);
                   1739:                } else
1.200     nicm     1740:                        return;
1.199     nicm     1741:        }
1.224     nicm     1742:
                   1743:        /* How many colours does this terminal have? */
                   1744:        if ((tty->term->flags|tty->term_flags) & TERM_256COLOURS)
                   1745:                colours = 256;
                   1746:        else
                   1747:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     1748:
1.85      nicm     1749:        /* Is this a 256-colour colour? */
1.204     nicm     1750:        if (gc->bg & COLOUR_FLAG_256) {
1.85      nicm     1751:                /*
                   1752:                 * And not a 256 colour mode? Translate to 16-colour
                   1753:                 * palette. Bold background doesn't exist portably, so just
                   1754:                 * discard the bold bit if set.
                   1755:                 */
1.224     nicm     1756:                if (colours != 256) {
1.85      nicm     1757:                        gc->bg = colour_256to16(gc->bg);
1.175     nicm     1758:                        if (gc->bg & 8) {
1.85      nicm     1759:                                gc->bg &= 7;
1.175     nicm     1760:                                if (colours >= 16)
                   1761:                                        gc->fg += 90;
                   1762:                        }
1.85      nicm     1763:                }
                   1764:                return;
                   1765:        }
                   1766:
                   1767:        /* Is this an aixterm colour? */
1.175     nicm     1768:        if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
1.85      nicm     1769:                gc->bg -= 90;
                   1770: }
                   1771:
1.207     nicm     1772: static void
1.85      nicm     1773: tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1774: {
1.61      nicm     1775:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1776:        char                     s[32];
1.1       nicm     1777:
1.204     nicm     1778:        /* Is this a 24-bit or 256-colour colour? */
                   1779:        if (gc->fg & COLOUR_FLAG_RGB ||
                   1780:            gc->fg & COLOUR_FLAG_256) {
                   1781:                if (tty_try_colour(tty, gc->fg, "38") == 0)
1.61      nicm     1782:                        goto save_fg;
1.199     nicm     1783:                /* Should not get here, already converted in tty_check_fg. */
1.85      nicm     1784:                return;
1.1       nicm     1785:        }
                   1786:
1.79      nicm     1787:        /* Is this an aixterm bright colour? */
1.204     nicm     1788:        if (gc->fg >= 90 && gc->fg <= 97) {
                   1789:                xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
1.85      nicm     1790:                tty_puts(tty, s);
                   1791:                goto save_fg;
1.79      nicm     1792:        }
                   1793:
1.61      nicm     1794:        /* Otherwise set the foreground colour. */
1.204     nicm     1795:        tty_putcode1(tty, TTYC_SETAF, gc->fg);
1.61      nicm     1796:
1.77      nicm     1797: save_fg:
1.61      nicm     1798:        /* Save the new values in the terminal current cell. */
1.204     nicm     1799:        tc->fg = gc->fg;
1.1       nicm     1800: }
                   1801:
1.207     nicm     1802: static void
1.73      nicm     1803: tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     1804: {
1.61      nicm     1805:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     1806:        char                     s[32];
1.1       nicm     1807:
1.204     nicm     1808:        /* Is this a 24-bit or 256-colour colour? */
                   1809:        if (gc->bg & COLOUR_FLAG_RGB ||
                   1810:            gc->bg & COLOUR_FLAG_256) {
                   1811:                if (tty_try_colour(tty, gc->bg, "48") == 0)
1.61      nicm     1812:                        goto save_bg;
1.199     nicm     1813:                /* Should not get here, already converted in tty_check_bg. */
1.85      nicm     1814:                return;
1.79      nicm     1815:        }
                   1816:
                   1817:        /* Is this an aixterm bright colour? */
1.204     nicm     1818:        if (gc->bg >= 90 && gc->bg <= 97) {
                   1819:                xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
1.175     nicm     1820:                tty_puts(tty, s);
                   1821:                goto save_bg;
1.1       nicm     1822:        }
                   1823:
1.61      nicm     1824:        /* Otherwise set the background colour. */
1.204     nicm     1825:        tty_putcode1(tty, TTYC_SETAB, gc->bg);
1.61      nicm     1826:
                   1827: save_bg:
                   1828:        /* Save the new values in the terminal current cell. */
1.204     nicm     1829:        tc->bg = gc->bg;
1.61      nicm     1830: }
                   1831:
1.207     nicm     1832: static int
1.204     nicm     1833: tty_try_colour(struct tty *tty, int colour, const char *type)
1.61      nicm     1834: {
1.204     nicm     1835:        u_char  r, g, b;
1.61      nicm     1836:        char    s[32];
                   1837:
1.204     nicm     1838:        if (colour & COLOUR_FLAG_256) {
                   1839:                /*
                   1840:                 * If the user has specified -2 to the client, setaf and setab
                   1841:                 * may not work (or they may not want to use them), so send the
                   1842:                 * usual sequence.
                   1843:                 */
                   1844:                if (tty->term_flags & TERM_256COLOURS)
                   1845:                        goto fallback_256;
1.189     nicm     1846:
1.204     nicm     1847:                /*
                   1848:                 * If the terminfo entry has 256 colours and setaf and setab
                   1849:                 * exist, assume that they work correctly.
                   1850:                 */
                   1851:                if (tty->term->flags & TERM_256COLOURS) {
                   1852:                        if (*type == '3') {
                   1853:                                if (!tty_term_has(tty->term, TTYC_SETAF))
                   1854:                                        goto fallback_256;
                   1855:                                tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
                   1856:                        } else {
                   1857:                                if (!tty_term_has(tty->term, TTYC_SETAB))
                   1858:                                        goto fallback_256;
                   1859:                                tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
                   1860:                        }
                   1861:                        return (0);
1.188     nicm     1862:                }
1.204     nicm     1863:                goto fallback_256;
                   1864:        }
                   1865:
                   1866:        if (colour & COLOUR_FLAG_RGB) {
                   1867:                if (!tty_term_flag(tty->term, TTYC_TC))
                   1868:                        return (-1);
                   1869:
                   1870:                colour_split_rgb(colour & 0xffffff, &r, &g, &b);
                   1871:                xsnprintf(s, sizeof s, "\033[%s;2;%hhu;%hhu;%hhum", type,
                   1872:                    r, g, b);
                   1873:                tty_puts(tty, s);
1.165     nicm     1874:                return (0);
                   1875:        }
1.61      nicm     1876:
1.165     nicm     1877:        return (-1);
1.188     nicm     1878:
1.204     nicm     1879: fallback_256:
                   1880:        xsnprintf(s, sizeof s, "\033[%s;5;%dm", type, colour & 0xff);
1.188     nicm     1881:        tty_puts(tty, s);
                   1882:        return (0);
1.176     nicm     1883: }
                   1884:
1.207     nicm     1885: static void
1.176     nicm     1886: tty_default_colours(struct grid_cell *gc, const struct window_pane *wp)
                   1887: {
1.203     nicm     1888:        struct window           *w = wp->window;
                   1889:        struct options          *oo = w->options;
                   1890:        const struct grid_cell  *agc, *pgc, *wgc;
1.223     nicm     1891:        int                      c;
1.203     nicm     1892:
                   1893:        if (w->flags & WINDOW_STYLECHANGED) {
                   1894:                w->flags &= ~WINDOW_STYLECHANGED;
                   1895:                agc = options_get_style(oo, "window-active-style");
                   1896:                memcpy(&w->active_style, agc, sizeof w->active_style);
                   1897:                wgc = options_get_style(oo, "window-style");
                   1898:                memcpy(&w->style, wgc, sizeof w->style);
                   1899:        } else {
                   1900:                agc = &w->active_style;
                   1901:                wgc = &w->style;
                   1902:        }
1.176     nicm     1903:        pgc = &wp->colgc;
                   1904:
1.204     nicm     1905:        if (gc->fg == 8) {
                   1906:                if (pgc->fg != 8)
1.176     nicm     1907:                        gc->fg = pgc->fg;
1.204     nicm     1908:                else if (wp == w->active && agc->fg != 8)
1.176     nicm     1909:                        gc->fg = agc->fg;
1.204     nicm     1910:                else
1.176     nicm     1911:                        gc->fg = wgc->fg;
1.219     nicm     1912:
1.223     nicm     1913:                if (gc->fg != 8 &&
                   1914:                    (c = window_pane_get_palette(wp, gc->fg)) != -1)
                   1915:                        gc->fg = c;
1.176     nicm     1916:        }
                   1917:
1.204     nicm     1918:        if (gc->bg == 8) {
                   1919:                if (pgc->bg != 8)
1.176     nicm     1920:                        gc->bg = pgc->bg;
1.204     nicm     1921:                else if (wp == w->active && agc->bg != 8)
1.176     nicm     1922:                        gc->bg = agc->bg;
1.204     nicm     1923:                else
1.176     nicm     1924:                        gc->bg = wgc->bg;
1.219     nicm     1925:
1.223     nicm     1926:                if (gc->bg != 8 &&
                   1927:                    (c = window_pane_get_palette(wp, gc->bg)) != -1)
                   1928:                        gc->bg = c;
1.176     nicm     1929:        }
1.210     nicm     1930: }
                   1931:
                   1932: static void
                   1933: tty_default_attributes(struct tty *tty, const struct window_pane *wp, u_int bg)
                   1934: {
                   1935:        static struct grid_cell gc;
                   1936:
                   1937:        memcpy(&gc, &grid_default_cell, sizeof gc);
                   1938:        gc.bg = bg;
                   1939:        tty_attributes(tty, &gc, wp);
1.1       nicm     1940: }