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Annotation of src/usr.bin/tmux/tty.c, Revision 1.368

1.368   ! nicm        1: /* $OpenBSD: tty.c,v 1.367 2020/05/16 14:39:40 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.198     nicm        4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20: #include <sys/ioctl.h>
                     21:
1.106     nicm       22: #include <netinet/in.h>
                     23:
1.212     nicm       24: #include <curses.h>
1.1       nicm       25: #include <errno.h>
                     26: #include <fcntl.h>
1.106     nicm       27: #include <resolv.h>
1.42      nicm       28: #include <stdlib.h>
1.1       nicm       29: #include <string.h>
                     30: #include <termios.h>
                     31: #include <unistd.h>
                     32:
                     33: #include "tmux.h"
                     34:
1.207     nicm       35: static int     tty_log_fd = -1;
1.192     nicm       36:
1.207     nicm       37: static int     tty_client_ready(struct client *, struct window_pane *);
1.201     nicm       38:
1.207     nicm       39: static void    tty_set_italics(struct tty *);
                     40: static int     tty_try_colour(struct tty *, int, const char *);
1.208     nicm       41: static void    tty_force_cursor_colour(struct tty *, const char *);
                     42: static void    tty_cursor_pane(struct tty *, const struct tty_ctx *, u_int,
                     43:                    u_int);
1.253     nicm       44: static void    tty_cursor_pane_unless_wrap(struct tty *,
                     45:                    const struct tty_ctx *, u_int, u_int);
1.242     nicm       46: static void    tty_invalidate(struct tty *);
1.207     nicm       47: static void    tty_colours(struct tty *, const struct grid_cell *);
1.317     nicm       48: static void    tty_check_fg(struct tty *, struct window_pane *,
1.219     nicm       49:                    struct grid_cell *);
1.317     nicm       50: static void    tty_check_bg(struct tty *, struct window_pane *,
1.219     nicm       51:                    struct grid_cell *);
1.328     nicm       52: static void    tty_check_us(struct tty *, struct window_pane *,
                     53:                    struct grid_cell *);
1.207     nicm       54: static void    tty_colours_fg(struct tty *, const struct grid_cell *);
                     55: static void    tty_colours_bg(struct tty *, const struct grid_cell *);
1.328     nicm       56: static void    tty_colours_us(struct tty *, const struct grid_cell *);
1.207     nicm       57:
1.208     nicm       58: static void    tty_region_pane(struct tty *, const struct tty_ctx *, u_int,
                     59:                    u_int);
1.214     nicm       60: static void    tty_region(struct tty *, u_int, u_int);
1.212     nicm       61: static void    tty_margin_pane(struct tty *, const struct tty_ctx *);
1.214     nicm       62: static void    tty_margin(struct tty *, u_int, u_int);
1.207     nicm       63: static int     tty_large_region(struct tty *, const struct tty_ctx *);
1.317     nicm       64: static int     tty_fake_bce(const struct tty *, struct window_pane *, u_int);
1.207     nicm       65: static void    tty_redraw_region(struct tty *, const struct tty_ctx *);
                     66: static void    tty_emulate_repeat(struct tty *, enum tty_code_code,
                     67:                    enum tty_code_code, u_int);
                     68: static void    tty_repeat_space(struct tty *, u_int);
1.309     nicm       69: static void    tty_draw_pane(struct tty *, const struct tty_ctx *, u_int);
1.207     nicm       70: static void    tty_cell(struct tty *, const struct grid_cell *,
1.317     nicm       71:                    struct window_pane *);
                     72: static void    tty_default_colours(struct grid_cell *, struct window_pane *);
                     73: static void    tty_default_attributes(struct tty *, struct window_pane *,
1.210     nicm       74:                    u_int);
1.1       nicm       75:
1.212     nicm       76: #define tty_use_margin(tty) \
1.359     nicm       77:        (tty->term->flags & TERM_DECSLRM)
1.90      nicm       78:
1.264     nicm       79: #define tty_pane_full_width(tty, ctx) \
1.132     nicm       80:        ((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
                     81:
1.266     nicm       82: #define TTY_BLOCK_INTERVAL (100000 /* 100 milliseconds */)
                     83: #define TTY_BLOCK_START(tty) (1 + ((tty)->sx * (tty)->sy) * 8)
                     84: #define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
                     85:
1.192     nicm       86: void
                     87: tty_create_log(void)
                     88: {
                     89:        char    name[64];
                     90:
                     91:        xsnprintf(name, sizeof name, "tmux-out-%ld.log", (long)getpid());
                     92:
                     93:        tty_log_fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
                     94:        if (tty_log_fd != -1 && fcntl(tty_log_fd, F_SETFD, FD_CLOEXEC) == -1)
                     95:                fatal("fcntl failed");
                     96: }
                     97:
1.185     nicm       98: int
1.359     nicm       99: tty_init(struct tty *tty, struct client *c, int fd)
1.1       nicm      100: {
1.185     nicm      101:        if (!isatty(fd))
                    102:                return (-1);
                    103:
1.30      nicm      104:        memset(tty, 0, sizeof *tty);
1.22      nicm      105:
1.30      nicm      106:        tty->fd = fd;
1.136     nicm      107:        tty->client = c;
1.30      nicm      108:
1.108     nicm      109:        tty->cstyle = 0;
1.107     nicm      110:        tty->ccolour = xstrdup("");
1.30      nicm      111:
1.185     nicm      112:        return (0);
1.31      nicm      113: }
                    114:
1.287     nicm      115: void
1.31      nicm      116: tty_resize(struct tty *tty)
                    117: {
1.258     nicm      118:        struct client   *c = tty->client;
                    119:        struct winsize   ws;
1.334     nicm      120:        u_int            sx, sy, xpixel, ypixel;
1.31      nicm      121:
                    122:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) != -1) {
1.88      nicm      123:                sx = ws.ws_col;
1.334     nicm      124:                if (sx == 0) {
1.88      nicm      125:                        sx = 80;
1.334     nicm      126:                        xpixel = 0;
                    127:                } else
                    128:                        xpixel = ws.ws_xpixel / sx;
1.88      nicm      129:                sy = ws.ws_row;
1.334     nicm      130:                if (sy == 0) {
1.88      nicm      131:                        sy = 24;
1.334     nicm      132:                        ypixel = 0;
                    133:                } else
                    134:                        ypixel = ws.ws_ypixel / sy;
1.88      nicm      135:        } else {
                    136:                sx = 80;
                    137:                sy = 24;
1.334     nicm      138:                xpixel = 0;
                    139:                ypixel = 0;
1.31      nicm      140:        }
1.334     nicm      141:        log_debug("%s: %s now %ux%u (%ux%u)", __func__, c->name, sx, sy,
                    142:            xpixel, ypixel);
                    143:        tty_set_size(tty, sx, sy, xpixel, ypixel);
1.242     nicm      144:        tty_invalidate(tty);
1.114     nicm      145: }
                    146:
1.287     nicm      147: void
1.334     nicm      148: tty_set_size(struct tty *tty, u_int sx, u_int sy, u_int xpixel, u_int ypixel)
1.212     nicm      149: {
1.114     nicm      150:        tty->sx = sx;
                    151:        tty->sy = sy;
1.334     nicm      152:        tty->xpixel = xpixel;
                    153:        tty->ypixel = ypixel;
1.1       nicm      154: }
                    155:
1.244     nicm      156: static void
                    157: tty_read_callback(__unused int fd, __unused short events, void *data)
                    158: {
                    159:        struct tty      *tty = data;
1.258     nicm      160:        struct client   *c = tty->client;
1.244     nicm      161:        size_t           size = EVBUFFER_LENGTH(tty->in);
                    162:        int              nread;
                    163:
                    164:        nread = evbuffer_read(tty->in, tty->fd, -1);
1.295     nicm      165:        if (nread == 0 || nread == -1) {
1.290     nicm      166:                event_del(&tty->event_in);
1.295     nicm      167:                server_client_lost(tty->client);
1.244     nicm      168:                return;
1.290     nicm      169:        }
1.258     nicm      170:        log_debug("%s: read %d bytes (already %zu)", c->name, nread, size);
1.244     nicm      171:
                    172:        while (tty_keys_next(tty))
                    173:                ;
                    174: }
                    175:
                    176: static void
1.266     nicm      177: tty_timer_callback(__unused int fd, __unused short events, void *data)
                    178: {
                    179:        struct tty      *tty = data;
                    180:        struct client   *c = tty->client;
                    181:        struct timeval   tv = { .tv_usec = TTY_BLOCK_INTERVAL };
                    182:
                    183:        log_debug("%s: %zu discarded", c->name, tty->discarded);
                    184:
1.305     nicm      185:        c->flags |= CLIENT_ALLREDRAWFLAGS;
1.266     nicm      186:        c->discarded += tty->discarded;
                    187:
                    188:        if (tty->discarded < TTY_BLOCK_STOP(tty)) {
                    189:                tty->flags &= ~TTY_BLOCK;
                    190:                tty_invalidate(tty);
                    191:                return;
                    192:        }
                    193:        tty->discarded = 0;
                    194:        evtimer_add(&tty->timer, &tv);
                    195: }
                    196:
                    197: static int
                    198: tty_block_maybe(struct tty *tty)
                    199: {
                    200:        struct client   *c = tty->client;
                    201:        size_t           size = EVBUFFER_LENGTH(tty->out);
                    202:        struct timeval   tv = { .tv_usec = TTY_BLOCK_INTERVAL };
                    203:
                    204:        if (size < TTY_BLOCK_START(tty))
                    205:                return (0);
                    206:
                    207:        if (tty->flags & TTY_BLOCK)
                    208:                return (1);
                    209:        tty->flags |= TTY_BLOCK;
                    210:
                    211:        log_debug("%s: can't keep up, %zu discarded", c->name, size);
                    212:
                    213:        evbuffer_drain(tty->out, size);
                    214:        c->discarded += size;
                    215:
                    216:        tty->discarded = 0;
                    217:        evtimer_add(&tty->timer, &tv);
                    218:        return (1);
                    219: }
                    220:
                    221: static void
1.244     nicm      222: tty_write_callback(__unused int fd, __unused short events, void *data)
                    223: {
1.246     nicm      224:        struct tty      *tty = data;
1.258     nicm      225:        struct client   *c = tty->client;
1.246     nicm      226:        size_t           size = EVBUFFER_LENGTH(tty->out);
                    227:        int              nwrite;
1.244     nicm      228:
                    229:        nwrite = evbuffer_write(tty->out, tty->fd);
                    230:        if (nwrite == -1)
                    231:                return;
1.258     nicm      232:        log_debug("%s: wrote %d bytes (of %zu)", c->name, nwrite, size);
1.244     nicm      233:
1.270     nicm      234:        if (c->redraw > 0) {
                    235:                if ((size_t)nwrite >= c->redraw)
                    236:                        c->redraw = 0;
                    237:                else
                    238:                        c->redraw -= nwrite;
                    239:                log_debug("%s: waiting for redraw, %zu bytes left", c->name,
                    240:                    c->redraw);
                    241:        } else if (tty_block_maybe(tty))
1.266     nicm      242:                return;
                    243:
1.247     nicm      244:        if (EVBUFFER_LENGTH(tty->out) != 0)
                    245:                event_add(&tty->event_out, NULL);
1.244     nicm      246: }
                    247:
1.1       nicm      248: int
1.166     nicm      249: tty_open(struct tty *tty, char **cause)
1.1       nicm      250: {
1.359     nicm      251:        struct client   *c = tty->client;
                    252:
                    253:        tty->term = tty_term_create(tty, c->term_name, &c->term_features,
                    254:            tty->fd, cause);
1.21      nicm      255:        if (tty->term == NULL) {
                    256:                tty_close(tty);
                    257:                return (-1);
                    258:        }
                    259:        tty->flags |= TTY_OPENED;
1.1       nicm      260:
1.266     nicm      261:        tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_BLOCK|TTY_TIMER);
1.244     nicm      262:
                    263:        event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
                    264:            tty_read_callback, tty);
                    265:        tty->in = evbuffer_new();
1.311     nicm      266:        if (tty->in == NULL)
                    267:                fatal("out of memory");
1.1       nicm      268:
1.244     nicm      269:        event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
                    270:        tty->out = evbuffer_new();
1.311     nicm      271:        if (tty->out == NULL)
                    272:                fatal("out of memory");
1.1       nicm      273:
1.266     nicm      274:        evtimer_set(&tty->timer, tty_timer_callback, tty);
                    275:
1.1       nicm      276:        tty_start_tty(tty);
                    277:
1.148     nicm      278:        tty_keys_build(tty);
1.1       nicm      279:
                    280:        return (0);
                    281: }
                    282:
1.340     nicm      283: static void
                    284: tty_start_timer_callback(__unused int fd, __unused short events, void *data)
                    285: {
                    286:        struct tty      *tty = data;
                    287:        struct client   *c = tty->client;
                    288:
                    289:        log_debug("%s: start timer fired", c->name);
1.364     nicm      290:        tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
1.340     nicm      291: }
                    292:
1.244     nicm      293: void
                    294: tty_start_tty(struct tty *tty)
1.1       nicm      295: {
1.285     nicm      296:        struct client   *c = tty->client;
                    297:        struct termios   tio;
1.340     nicm      298:        struct timeval   tv = { .tv_sec = 1 };
1.33      nicm      299:
1.244     nicm      300:        if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
                    301:                setblocking(tty->fd, 0);
                    302:                event_add(&tty->event_in, NULL);
                    303:
                    304:                memcpy(&tio, &tty->tio, sizeof tio);
                    305:                tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
                    306:                tio.c_iflag |= IGNBRK;
                    307:                tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
                    308:                tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
                    309:                    ECHOPRT|ECHOKE|ISIG);
                    310:                tio.c_cc[VMIN] = 1;
                    311:                tio.c_cc[VTIME] = 0;
                    312:                if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
                    313:                        tcflush(tty->fd, TCIOFLUSH);
                    314:        }
1.1       nicm      315:
1.10      nicm      316:        tty_putcode(tty, TTYC_SMCUP);
1.1       nicm      317:
1.252     nicm      318:        tty_putcode(tty, TTYC_SMKX);
1.285     nicm      319:        tty_putcode(tty, TTYC_CLEAR);
                    320:
                    321:        if (tty_acs_needed(tty)) {
                    322:                log_debug("%s: using capabilities for ACS", c->name);
1.90      nicm      323:                tty_putcode(tty, TTYC_ENACS);
1.285     nicm      324:        } else
                    325:                log_debug("%s: using UTF-8 for ACS", c->name);
1.1       nicm      326:
                    327:        tty_putcode(tty, TTYC_CNORM);
1.343     nicm      328:        if (tty_term_has(tty->term, TTYC_KMOUS)) {
                    329:                tty_puts(tty, "\033[?1000l\033[?1002l\033[?1003l");
                    330:                tty_puts(tty, "\033[?1006l\033[?1005l");
                    331:        }
1.121     nicm      332:
1.367     nicm      333:        if (options_get_number(global_options, "focus-events")) {
                    334:                tty->flags |= TTY_FOCUS;
                    335:                tty_raw(tty, tty_term_string(tty->term, TTYC_ENFCS));
                    336:        }
                    337:        if (tty_term_flag(tty->term, TTYC_XT))
1.352     nicm      338:                tty_puts(tty, "\033[?7727h");
1.1       nicm      339:
1.340     nicm      340:        evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
                    341:        evtimer_add(&tty->start_timer, &tv);
                    342:
1.20      nicm      343:        tty->flags |= TTY_STARTED;
1.242     nicm      344:        tty_invalidate(tty);
1.107     nicm      345:
1.336     nicm      346:        if (*tty->ccolour != '\0')
                    347:                tty_force_cursor_colour(tty, "");
1.177     nicm      348:
                    349:        tty->mouse_drag_flag = 0;
                    350:        tty->mouse_drag_update = NULL;
                    351:        tty->mouse_drag_release = NULL;
1.347     nicm      352: }
                    353:
                    354: void
                    355: tty_send_requests(struct tty *tty)
                    356: {
                    357:        if (~tty->flags & TTY_STARTED)
                    358:                return;
                    359:
                    360:        if (tty_term_flag(tty->term, TTYC_XT)) {
                    361:                if (~tty->flags & TTY_HAVEDA)
1.351     nicm      362:                        tty_puts(tty, "\033[>c");
1.364     nicm      363:                if (~tty->flags & TTY_HAVEXDA)
                    364:                        tty_puts(tty, "\033[>q");
1.347     nicm      365:        } else
1.364     nicm      366:                tty->flags |= (TTY_HAVEDA|TTY_HAVEXDA);
1.128     nicm      367: }
                    368:
                    369: void
1.1       nicm      370: tty_stop_tty(struct tty *tty)
                    371: {
                    372:        struct winsize  ws;
                    373:
1.20      nicm      374:        if (!(tty->flags & TTY_STARTED))
                    375:                return;
                    376:        tty->flags &= ~TTY_STARTED;
1.340     nicm      377:
                    378:        evtimer_del(&tty->start_timer);
1.20      nicm      379:
1.266     nicm      380:        event_del(&tty->timer);
                    381:        tty->flags &= ~TTY_BLOCK;
                    382:
1.244     nicm      383:        event_del(&tty->event_in);
                    384:        event_del(&tty->event_out);
1.66      nicm      385:
1.1       nicm      386:        /*
                    387:         * Be flexible about error handling and try not kill the server just
                    388:         * because the fd is invalid. Things like ssh -t can easily leave us
                    389:         * with a dead tty.
                    390:         */
                    391:        if (ioctl(tty->fd, TIOCGWINSZ, &ws) == -1)
                    392:                return;
                    393:        if (tcsetattr(tty->fd, TCSANOW, &tty->tio) == -1)
                    394:                return;
                    395:
                    396:        tty_raw(tty, tty_term_string2(tty->term, TTYC_CSR, 0, ws.ws_row - 1));
1.285     nicm      397:        if (tty_acs_needed(tty))
1.90      nicm      398:                tty_raw(tty, tty_term_string(tty->term, TTYC_RMACS));
1.1       nicm      399:        tty_raw(tty, tty_term_string(tty->term, TTYC_SGR0));
                    400:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMKX));
                    401:        tty_raw(tty, tty_term_string(tty->term, TTYC_CLEAR));
1.160     nicm      402:        if (tty_term_has(tty->term, TTYC_SS) && tty->cstyle != 0) {
                    403:                if (tty_term_has(tty->term, TTYC_SE))
                    404:                        tty_raw(tty, tty_term_string(tty->term, TTYC_SE));
1.109     nicm      405:                else
1.160     nicm      406:                        tty_raw(tty, tty_term_string1(tty->term, TTYC_SS, 0));
1.108     nicm      407:        }
1.173     nicm      408:        if (tty->mode & MODE_BRACKETPASTE)
1.366     nicm      409:                tty_raw(tty, tty_term_string(tty->term, TTYC_DSBP));
1.336     nicm      410:        if (*tty->ccolour != '\0')
                    411:                tty_raw(tty, tty_term_string(tty->term, TTYC_CR));
1.1       nicm      412:
                    413:        tty_raw(tty, tty_term_string(tty->term, TTYC_CNORM));
1.343     nicm      414:        if (tty_term_has(tty->term, TTYC_KMOUS)) {
                    415:                tty_raw(tty, "\033[?1000l\033[?1002l\033[?1003l");
                    416:                tty_raw(tty, "\033[?1006l\033[?1005l");
                    417:        }
1.151     nicm      418:
1.367     nicm      419:        if (tty->flags & TTY_FOCUS) {
                    420:                tty->flags &= ~TTY_FOCUS;
                    421:                tty_raw(tty, tty_term_string(tty->term, TTYC_DSFCS));
                    422:        }
                    423:        if (tty_term_flag(tty->term, TTYC_XT))
1.352     nicm      424:                tty_raw(tty, "\033[?7727l");
1.10      nicm      425:
1.212     nicm      426:        if (tty_use_margin(tty))
1.365     nicm      427:                tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
1.10      nicm      428:        tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
1.150     nicm      429:
                    430:        setblocking(tty->fd, 1);
1.1       nicm      431: }
                    432:
                    433: void
1.20      nicm      434: tty_close(struct tty *tty)
1.1       nicm      435: {
1.123     nicm      436:        if (event_initialized(&tty->key_timer))
                    437:                evtimer_del(&tty->key_timer);
1.20      nicm      438:        tty_stop_tty(tty);
1.1       nicm      439:
1.21      nicm      440:        if (tty->flags & TTY_OPENED) {
1.244     nicm      441:                evbuffer_free(tty->in);
                    442:                event_del(&tty->event_in);
                    443:                evbuffer_free(tty->out);
                    444:                event_del(&tty->event_out);
1.66      nicm      445:
1.21      nicm      446:                tty_term_free(tty->term);
                    447:                tty_keys_free(tty);
                    448:
                    449:                tty->flags &= ~TTY_OPENED;
                    450:        }
1.1       nicm      451:
1.21      nicm      452:        if (tty->fd != -1) {
                    453:                close(tty->fd);
                    454:                tty->fd = -1;
                    455:        }
1.1       nicm      456: }
                    457:
                    458: void
1.20      nicm      459: tty_free(struct tty *tty)
1.1       nicm      460: {
1.20      nicm      461:        tty_close(tty);
1.138     nicm      462:        free(tty->ccolour);
1.1       nicm      463: }
                    464:
                    465: void
1.359     nicm      466: tty_update_features(struct tty *tty)
1.212     nicm      467: {
1.359     nicm      468:        struct client   *c = tty->client;
                    469:
1.362     nicm      470:        if (tty_apply_features(tty->term, c->term_features))
                    471:                tty_term_apply_overrides(tty->term);
1.212     nicm      472:
                    473:        if (tty_use_margin(tty))
1.365     nicm      474:                tty_putcode(tty, TTYC_ENMG);
1.212     nicm      475: }
                    476:
                    477: void
1.1       nicm      478: tty_raw(struct tty *tty, const char *s)
                    479: {
1.150     nicm      480:        ssize_t n, slen;
                    481:        u_int   i;
                    482:
                    483:        slen = strlen(s);
                    484:        for (i = 0; i < 5; i++) {
                    485:                n = write(tty->fd, s, slen);
                    486:                if (n >= 0) {
                    487:                        s += n;
                    488:                        slen -= n;
                    489:                        if (slen == 0)
                    490:                                break;
                    491:                } else if (n == -1 && errno != EAGAIN)
                    492:                        break;
                    493:                usleep(100);
                    494:        }
1.1       nicm      495: }
                    496:
                    497: void
                    498: tty_putcode(struct tty *tty, enum tty_code_code code)
                    499: {
                    500:        tty_puts(tty, tty_term_string(tty->term, code));
                    501: }
                    502:
                    503: void
                    504: tty_putcode1(struct tty *tty, enum tty_code_code code, int a)
                    505: {
                    506:        if (a < 0)
                    507:                return;
                    508:        tty_puts(tty, tty_term_string1(tty->term, code, a));
                    509: }
                    510:
                    511: void
                    512: tty_putcode2(struct tty *tty, enum tty_code_code code, int a, int b)
                    513: {
                    514:        if (a < 0 || b < 0)
                    515:                return;
                    516:        tty_puts(tty, tty_term_string2(tty->term, code, a, b));
                    517: }
                    518:
                    519: void
1.286     nicm      520: tty_putcode3(struct tty *tty, enum tty_code_code code, int a, int b, int c)
                    521: {
                    522:        if (a < 0 || b < 0 || c < 0)
                    523:                return;
                    524:        tty_puts(tty, tty_term_string3(tty->term, code, a, b, c));
                    525: }
                    526:
                    527: void
1.107     nicm      528: tty_putcode_ptr1(struct tty *tty, enum tty_code_code code, const void *a)
                    529: {
                    530:        if (a != NULL)
                    531:                tty_puts(tty, tty_term_ptr1(tty->term, code, a));
                    532: }
                    533:
                    534: void
1.167     nicm      535: tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
                    536:     const void *b)
1.106     nicm      537: {
                    538:        if (a != NULL && b != NULL)
                    539:                tty_puts(tty, tty_term_ptr2(tty->term, code, a, b));
                    540: }
                    541:
1.243     nicm      542: static void
                    543: tty_add(struct tty *tty, const char *buf, size_t len)
                    544: {
1.258     nicm      545:        struct client   *c = tty->client;
                    546:
1.266     nicm      547:        if (tty->flags & TTY_BLOCK) {
                    548:                tty->discarded += len;
                    549:                return;
                    550:        }
                    551:
1.244     nicm      552:        evbuffer_add(tty->out, buf, len);
1.270     nicm      553:        log_debug("%s: %.*s", c->name, (int)len, buf);
1.266     nicm      554:        c->written += len;
1.243     nicm      555:
                    556:        if (tty_log_fd != -1)
                    557:                write(tty_log_fd, buf, len);
1.244     nicm      558:        if (tty->flags & TTY_STARTED)
                    559:                event_add(&tty->event_out, NULL);
1.243     nicm      560: }
                    561:
1.106     nicm      562: void
1.1       nicm      563: tty_puts(struct tty *tty, const char *s)
                    564: {
1.243     nicm      565:        if (*s != '\0')
                    566:                tty_add(tty, s, strlen(s));
1.1       nicm      567: }
                    568:
                    569: void
                    570: tty_putc(struct tty *tty, u_char ch)
                    571: {
1.90      nicm      572:        const char      *acs;
1.1       nicm      573:
1.359     nicm      574:        if ((tty->term->flags & TERM_NOXENL) &&
1.325     nicm      575:            ch >= 0x20 && ch != 0x7f &&
                    576:            tty->cy == tty->sy - 1 &&
                    577:            tty->cx + 1 >= tty->sx)
                    578:                return;
                    579:
1.90      nicm      580:        if (tty->cell.attr & GRID_ATTR_CHARSET) {
                    581:                acs = tty_acs_get(tty, ch);
1.243     nicm      582:                if (acs != NULL)
                    583:                        tty_add(tty, acs, strlen(acs));
                    584:                else
                    585:                        tty_add(tty, &ch, 1);
                    586:        } else
                    587:                tty_add(tty, &ch, 1);
1.1       nicm      588:
                    589:        if (ch >= 0x20 && ch != 0x7f) {
1.211     nicm      590:                if (tty->cx >= tty->sx) {
1.46      nicm      591:                        tty->cx = 1;
                    592:                        if (tty->cy != tty->rlower)
                    593:                                tty->cy++;
1.211     nicm      594:
                    595:                        /*
                    596:                         * On !xenl terminals, force the cursor position to
                    597:                         * where we think it should be after a line wrap - this
                    598:                         * means it works on sensible terminals as well.
                    599:                         */
1.359     nicm      600:                        if (tty->term->flags & TERM_NOXENL)
1.211     nicm      601:                                tty_putcode2(tty, TTYC_CUP, tty->cy, tty->cx);
1.1       nicm      602:                } else
                    603:                        tty->cx++;
                    604:        }
                    605: }
                    606:
                    607: void
1.147     nicm      608: tty_putn(struct tty *tty, const void *buf, size_t len, u_int width)
1.5       nicm      609: {
1.359     nicm      610:        if ((tty->term->flags & TERM_NOXENL) &&
1.325     nicm      611:            tty->cy == tty->sy - 1 &&
                    612:            tty->cx + len >= tty->sx)
                    613:                len = tty->sx - tty->cx - 1;
                    614:
1.243     nicm      615:        tty_add(tty, buf, len);
1.268     nicm      616:        if (tty->cx + width > tty->sx) {
                    617:                tty->cx = (tty->cx + width) - tty->sx;
                    618:                if (tty->cx <= tty->sx)
                    619:                        tty->cy++;
                    620:                else
                    621:                        tty->cx = tty->cy = UINT_MAX;
                    622:        } else
1.254     nicm      623:                tty->cx += width;
1.5       nicm      624: }
                    625:
1.207     nicm      626: static void
1.180     nicm      627: tty_set_italics(struct tty *tty)
                    628: {
                    629:        const char      *s;
                    630:
                    631:        if (tty_term_has(tty->term, TTYC_SITM)) {
1.191     nicm      632:                s = options_get_string(global_options, "default-terminal");
1.180     nicm      633:                if (strcmp(s, "screen") != 0 && strncmp(s, "screen-", 7) != 0) {
                    634:                        tty_putcode(tty, TTYC_SITM);
                    635:                        return;
                    636:                }
                    637:        }
                    638:        tty_putcode(tty, TTYC_SMSO);
                    639: }
                    640:
                    641: void
1.1       nicm      642: tty_set_title(struct tty *tty, const char *title)
                    643: {
1.105     nicm      644:        if (!tty_term_has(tty->term, TTYC_TSL) ||
                    645:            !tty_term_has(tty->term, TTYC_FSL))
1.1       nicm      646:                return;
                    647:
1.105     nicm      648:        tty_putcode(tty, TTYC_TSL);
1.1       nicm      649:        tty_puts(tty, title);
1.105     nicm      650:        tty_putcode(tty, TTYC_FSL);
1.1       nicm      651: }
                    652:
1.208     nicm      653: static void
1.107     nicm      654: tty_force_cursor_colour(struct tty *tty, const char *ccolour)
                    655: {
                    656:        if (*ccolour == '\0')
                    657:                tty_putcode(tty, TTYC_CR);
                    658:        else
1.160     nicm      659:                tty_putcode_ptr1(tty, TTYC_CS, ccolour);
1.138     nicm      660:        free(tty->ccolour);
1.107     nicm      661:        tty->ccolour = xstrdup(ccolour);
                    662: }
                    663:
                    664: void
                    665: tty_update_mode(struct tty *tty, int mode, struct screen *s)
1.1       nicm      666: {
1.344     nicm      667:        struct client   *c = tty->client;
                    668:        int              changed;
1.1       nicm      669:
1.197     nicm      670:        if (s != NULL && strcmp(s->ccolour, tty->ccolour) != 0)
1.107     nicm      671:                tty_force_cursor_colour(tty, s->ccolour);
                    672:
1.1       nicm      673:        if (tty->flags & TTY_NOCURSOR)
                    674:                mode &= ~MODE_CURSOR;
                    675:
                    676:        changed = mode ^ tty->mode;
1.368   ! nicm      677:        if (changed != 0)
        !           678:                log_debug("%s: update mode %x to %x", c->name, tty->mode, mode);
1.344     nicm      679:
1.183     nicm      680:        if (changed & MODE_BLINKING) {
                    681:                if (tty_term_has(tty->term, TTYC_CVVIS))
                    682:                        tty_putcode(tty, TTYC_CVVIS);
                    683:                else
                    684:                        tty_putcode(tty, TTYC_CNORM);
                    685:                changed |= MODE_CURSOR;
                    686:        }
                    687:        if (changed & MODE_CURSOR) {
                    688:                if (mode & MODE_CURSOR)
                    689:                        tty_putcode(tty, TTYC_CNORM);
                    690:                else
1.1       nicm      691:                        tty_putcode(tty, TTYC_CIVIS);
1.108     nicm      692:        }
1.181     nicm      693:        if (s != NULL && tty->cstyle != s->cstyle) {
1.160     nicm      694:                if (tty_term_has(tty->term, TTYC_SS)) {
1.108     nicm      695:                        if (s->cstyle == 0 &&
1.160     nicm      696:                            tty_term_has(tty->term, TTYC_SE))
                    697:                                tty_putcode(tty, TTYC_SE);
1.108     nicm      698:                        else
1.160     nicm      699:                                tty_putcode1(tty, TTYC_SS, s->cstyle);
1.108     nicm      700:                }
                    701:                tty->cstyle = s->cstyle;
1.1       nicm      702:        }
1.344     nicm      703:        if ((changed & ALL_MOUSE_MODES) &&
                    704:            tty_term_has(tty->term, TTYC_KMOUS)) {
                    705:                if ((mode & ALL_MOUSE_MODES) == 0)
                    706:                        tty_puts(tty, "\033[?1006l");
                    707:                if ((changed & MODE_MOUSE_STANDARD) &&
                    708:                    (~mode & MODE_MOUSE_STANDARD))
                    709:                        tty_puts(tty, "\033[?1000l");
                    710:                if ((changed & MODE_MOUSE_BUTTON) &&
                    711:                    (~mode & MODE_MOUSE_BUTTON))
                    712:                        tty_puts(tty, "\033[?1002l");
                    713:                if ((changed & MODE_MOUSE_ALL) &&
                    714:                    (~mode & MODE_MOUSE_ALL))
                    715:                        tty_puts(tty, "\033[?1003l");
                    716:
                    717:                if (mode & ALL_MOUSE_MODES)
1.153     nicm      718:                        tty_puts(tty, "\033[?1006h");
1.344     nicm      719:                if ((changed & MODE_MOUSE_STANDARD) &&
                    720:                    (mode & MODE_MOUSE_STANDARD))
                    721:                        tty_puts(tty, "\033[?1000h");
                    722:                if ((changed & MODE_MOUSE_BUTTON) &&
                    723:                    (mode & MODE_MOUSE_BUTTON))
                    724:                        tty_puts(tty, "\033[?1002h");
                    725:                if ((changed & MODE_MOUSE_ALL) &&
                    726:                    (mode & MODE_MOUSE_ALL))
                    727:                        tty_puts(tty, "\033[?1003h");
1.115     nicm      728:        }
                    729:        if (changed & MODE_BRACKETPASTE) {
                    730:                if (mode & MODE_BRACKETPASTE)
1.366     nicm      731:                        tty_putcode(tty, TTYC_ENBP);
1.115     nicm      732:                else
1.366     nicm      733:                        tty_putcode(tty, TTYC_DSBP);
1.1       nicm      734:        }
                    735:        tty->mode = mode;
                    736: }
                    737:
1.207     nicm      738: static void
1.168     nicm      739: tty_emulate_repeat(struct tty *tty, enum tty_code_code code,
                    740:     enum tty_code_code code1, u_int n)
1.1       nicm      741: {
                    742:        if (tty_term_has(tty->term, code))
                    743:                tty_putcode1(tty, code, n);
                    744:        else {
                    745:                while (n-- > 0)
                    746:                        tty_putcode(tty, code1);
                    747:        }
                    748: }
                    749:
1.207     nicm      750: static void
1.133     nicm      751: tty_repeat_space(struct tty *tty, u_int n)
                    752: {
1.257     nicm      753:        static char s[500];
                    754:
                    755:        if (*s != ' ')
                    756:                memset(s, ' ', sizeof s);
                    757:
                    758:        while (n > sizeof s) {
                    759:                tty_putn(tty, s, sizeof s, sizeof s);
                    760:                n -= sizeof s;
                    761:        }
                    762:        if (n != 0)
                    763:                tty_putn(tty, s, n, n);
1.304     nicm      764: }
                    765:
1.309     nicm      766: /* Is this window bigger than the terminal? */
                    767: int
                    768: tty_window_bigger(struct tty *tty)
                    769: {
                    770:        struct client   *c = tty->client;
                    771:        struct window   *w = c->session->curw->window;
                    772:
                    773:        return (tty->sx < w->sx || tty->sy - status_line_size(c) < w->sy);
                    774: }
                    775:
                    776: /* What offset should this window be drawn at? */
                    777: int
                    778: tty_window_offset(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
                    779: {
                    780:        *ox = tty->oox;
                    781:        *oy = tty->ooy;
                    782:        *sx = tty->osx;
                    783:        *sy = tty->osy;
                    784:
                    785:        return (tty->oflag);
                    786: }
                    787:
                    788: /* What offset should this window be drawn at? */
                    789: static int
                    790: tty_window_offset1(struct tty *tty, u_int *ox, u_int *oy, u_int *sx, u_int *sy)
                    791: {
                    792:        struct client           *c = tty->client;
                    793:        struct window           *w = c->session->curw->window;
                    794:        struct window_pane      *wp = w->active;
                    795:        u_int                    cx, cy, lines;
                    796:
                    797:        lines = status_line_size(c);
                    798:
                    799:        if (tty->sx >= w->sx && tty->sy - lines >= w->sy) {
                    800:                *ox = 0;
                    801:                *oy = 0;
                    802:                *sx = w->sx;
                    803:                *sy = w->sy;
                    804:
                    805:                c->pan_window = NULL;
                    806:                return (0);
                    807:        }
                    808:
                    809:        *sx = tty->sx;
                    810:        *sy = tty->sy - lines;
                    811:
                    812:        if (c->pan_window == w) {
                    813:                if (*sx >= w->sx)
                    814:                        c->pan_ox = 0;
                    815:                else if (c->pan_ox + *sx > w->sx)
                    816:                        c->pan_ox = w->sx - *sx;
                    817:                *ox = c->pan_ox;
                    818:                if (*sy >= w->sy)
                    819:                        c->pan_oy = 0;
                    820:                else if (c->pan_oy + *sy > w->sy)
                    821:                        c->pan_oy = w->sy - *sy;
                    822:                *oy = c->pan_oy;
                    823:                return (1);
                    824:        }
                    825:
                    826:        if (~wp->screen->mode & MODE_CURSOR) {
                    827:                *ox = 0;
                    828:                *oy = 0;
                    829:        } else {
                    830:                cx = wp->xoff + wp->screen->cx;
                    831:                cy = wp->yoff + wp->screen->cy;
                    832:
                    833:                if (cx < *sx)
                    834:                        *ox = 0;
                    835:                else if (cx > w->sx - *sx)
                    836:                        *ox = w->sx - *sx;
                    837:                else
                    838:                        *ox = cx - *sx / 2;
                    839:
                    840:                if (cy < *sy)
                    841:                        *oy = 0;
                    842:                else if (cy > w->sy - *sy)
                    843:                        *oy = w->sy - *sy;
                    844:                else
                    845:                        *oy = cy - *sy / 2;
                    846:        }
                    847:
                    848:        c->pan_window = NULL;
                    849:        return (1);
                    850: }
                    851:
                    852: /* Update stored offsets for a window and redraw if necessary. */
                    853: void
                    854: tty_update_window_offset(struct window *w)
                    855: {
                    856:        struct client   *c;
                    857:
                    858:        TAILQ_FOREACH(c, &clients, entry) {
                    859:                if (c->session != NULL && c->session->curw->window == w)
                    860:                        tty_update_client_offset(c);
                    861:        }
                    862: }
                    863:
                    864: /* Update stored offsets for a client and redraw if necessary. */
                    865: void
                    866: tty_update_client_offset(struct client *c)
1.304     nicm      867: {
1.309     nicm      868:        u_int   ox, oy, sx, sy;
1.314     nicm      869:
                    870:        if (~c->flags & CLIENT_TERMINAL)
                    871:                return;
1.304     nicm      872:
1.309     nicm      873:        c->tty.oflag = tty_window_offset1(&c->tty, &ox, &oy, &sx, &sy);
                    874:        if (ox == c->tty.oox &&
                    875:            oy == c->tty.ooy &&
                    876:            sx == c->tty.osx &&
                    877:            sy == c->tty.osy)
                    878:                return;
                    879:
                    880:        log_debug ("%s: %s offset has changed (%u,%u %ux%u -> %u,%u %ux%u)",
                    881:            __func__, c->name, c->tty.oox, c->tty.ooy, c->tty.osx, c->tty.osy,
                    882:            ox, oy, sx, sy);
                    883:
                    884:        c->tty.oox = ox;
                    885:        c->tty.ooy = oy;
                    886:        c->tty.osx = sx;
                    887:        c->tty.osy = sy;
                    888:
                    889:        c->flags |= (CLIENT_REDRAWWINDOW|CLIENT_REDRAWSTATUS);
1.133     nicm      890: }
                    891:
1.1       nicm      892: /*
1.119     nicm      893:  * Is the region large enough to be worth redrawing once later rather than
                    894:  * probably several times now? Currently yes if it is more than 50% of the
                    895:  * pane.
                    896:  */
1.207     nicm      897: static int
1.194     nicm      898: tty_large_region(__unused struct tty *tty, const struct tty_ctx *ctx)
1.119     nicm      899: {
                    900:        struct window_pane      *wp = ctx->wp;
                    901:
                    902:        return (ctx->orlower - ctx->orupper >= screen_size_y(wp->screen) / 2);
                    903: }
                    904:
                    905: /*
1.176     nicm      906:  * Return if BCE is needed but the terminal doesn't have it - it'll need to be
                    907:  * emulated.
                    908:  */
1.207     nicm      909: static int
1.317     nicm      910: tty_fake_bce(const struct tty *tty, struct window_pane *wp, u_int bg)
1.176     nicm      911: {
                    912:        struct grid_cell        gc;
                    913:
1.210     nicm      914:        if (tty_term_flag(tty->term, TTYC_BCE))
                    915:                return (0);
                    916:
1.176     nicm      917:        memcpy(&gc, &grid_default_cell, sizeof gc);
1.203     nicm      918:        if (wp != NULL)
                    919:                tty_default_colours(&gc, wp);
1.176     nicm      920:
1.310     nicm      921:        if (!COLOUR_DEFAULT(bg) || !COLOUR_DEFAULT(gc.bg))
1.210     nicm      922:                return (1);
                    923:        return (0);
1.176     nicm      924: }
                    925:
                    926: /*
1.1       nicm      927:  * Redraw scroll region using data from screen (already updated). Used when
                    928:  * CSR not supported, or window is a pane that doesn't take up the full
                    929:  * width of the terminal.
                    930:  */
1.207     nicm      931: static void
1.24      nicm      932: tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm      933: {
1.358     nicm      934:        struct client           *c = tty->client;
1.14      nicm      935:        struct window_pane      *wp = ctx->wp;
                    936:        struct screen           *s = wp->screen;
1.204     nicm      937:        u_int                    i;
1.1       nicm      938:
                    939:        /*
1.119     nicm      940:         * If region is large, schedule a window redraw. In most cases this is
                    941:         * likely to be followed by some more scrolling.
1.1       nicm      942:         */
1.119     nicm      943:        if (tty_large_region(tty, ctx)) {
1.358     nicm      944:                log_debug("%s: %s, large redraw of %%%u", __func__, c->name, wp->id);
1.1       nicm      945:                wp->flags |= PANE_REDRAW;
                    946:                return;
                    947:        }
                    948:
1.14      nicm      949:        if (ctx->ocy < ctx->orupper || ctx->ocy > ctx->orlower) {
                    950:                for (i = ctx->ocy; i < screen_size_y(s); i++)
1.309     nicm      951:                        tty_draw_pane(tty, ctx, i);
1.1       nicm      952:        } else {
1.14      nicm      953:                for (i = ctx->orupper; i <= ctx->orlower; i++)
1.309     nicm      954:                        tty_draw_pane(tty, ctx, i);
1.1       nicm      955:        }
                    956: }
                    957:
1.309     nicm      958: /* Is this position visible in the pane? */
                    959: static int
                    960: tty_is_visible(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
                    961:     u_int nx, u_int ny)
                    962: {
                    963:        u_int   xoff = ctx->xoff + px, yoff = ctx->yoff + py, lines;
                    964:
                    965:        if (!ctx->bigger)
                    966:                return (1);
                    967:
                    968:        if (status_at_line(tty->client) == 0)
                    969:                lines = status_line_size(tty->client);
                    970:        else
                    971:                lines = 0;
                    972:
                    973:        if (xoff + nx <= ctx->ox || xoff >= ctx->ox + ctx->sx ||
1.320     nicm      974:            yoff + ny <= ctx->oy || yoff >= lines + ctx->oy + ctx->sy)
1.309     nicm      975:                return (0);
                    976:        return (1);
                    977: }
                    978:
                    979: /* Clamp line position to visible part of pane. */
                    980: static int
                    981: tty_clamp_line(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
                    982:     u_int nx, u_int *i, u_int *x, u_int *rx, u_int *ry)
                    983: {
                    984:        struct window_pane      *wp = ctx->wp;
                    985:        u_int                    xoff = wp->xoff + px;
                    986:
                    987:        if (!tty_is_visible(tty, ctx, px, py, nx, 1))
                    988:                return (0);
                    989:        *ry = ctx->yoff + py - ctx->oy;
                    990:
                    991:        if (xoff >= ctx->ox && xoff + nx <= ctx->ox + ctx->sx) {
                    992:                /* All visible. */
                    993:                *i = 0;
                    994:                *x = ctx->xoff + px - ctx->ox;
                    995:                *rx = nx;
                    996:        } else if (xoff < ctx->ox && xoff + nx > ctx->ox + ctx->sx) {
                    997:                /* Both left and right not visible. */
                    998:                *i = ctx->ox;
                    999:                *x = 0;
                   1000:                *rx = ctx->sx;
                   1001:        } else if (xoff < ctx->ox) {
                   1002:                /* Left not visible. */
                   1003:                *i = ctx->ox - (ctx->xoff + px);
                   1004:                *x = 0;
                   1005:                *rx = nx - *i;
                   1006:        } else {
                   1007:                /* Right not visible. */
                   1008:                *i = 0;
                   1009:                *x = (ctx->xoff + px) - ctx->ox;
                   1010:                *rx = ctx->sx - *x;
                   1011:        }
                   1012:        if (*rx > nx)
                   1013:                fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
                   1014:
                   1015:        return (1);
                   1016: }
                   1017:
                   1018: /* Clear a line. */
1.271     nicm     1019: static void
1.317     nicm     1020: tty_clear_line(struct tty *tty, struct window_pane *wp, u_int py, u_int px,
                   1021:     u_int nx, u_int bg)
1.271     nicm     1022: {
1.309     nicm     1023:        struct client   *c = tty->client;
                   1024:
                   1025:        log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
1.271     nicm     1026:
                   1027:        /* Nothing to clear. */
                   1028:        if (nx == 0)
                   1029:                return;
                   1030:
                   1031:        /* If genuine BCE is available, can try escape sequences. */
                   1032:        if (!tty_fake_bce(tty, wp, bg)) {
                   1033:                /* Off the end of the line, use EL if available. */
                   1034:                if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
                   1035:                        tty_cursor(tty, px, py);
                   1036:                        tty_putcode(tty, TTYC_EL);
                   1037:                        return;
                   1038:                }
                   1039:
                   1040:                /* At the start of the line. Use EL1. */
                   1041:                if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
                   1042:                        tty_cursor(tty, px + nx - 1, py);
                   1043:                        tty_putcode(tty, TTYC_EL1);
                   1044:                        return;
                   1045:                }
                   1046:
                   1047:                /* Section of line. Use ECH if possible. */
                   1048:                if (tty_term_has(tty->term, TTYC_ECH)) {
                   1049:                        tty_cursor(tty, px, py);
                   1050:                        tty_putcode1(tty, TTYC_ECH, nx);
                   1051:                        return;
                   1052:                }
                   1053:        }
                   1054:
                   1055:        /* Couldn't use an escape sequence, use spaces. */
1.272     nicm     1056:        tty_cursor(tty, px, py);
1.271     nicm     1057:        tty_repeat_space(tty, nx);
                   1058: }
                   1059:
1.309     nicm     1060: /* Clear a line, adjusting to visible part of pane. */
                   1061: static void
                   1062: tty_clear_pane_line(struct tty *tty, const struct tty_ctx *ctx, u_int py,
                   1063:     u_int px, u_int nx, u_int bg)
                   1064: {
                   1065:        struct client   *c = tty->client;
                   1066:        u_int            i, x, rx, ry;
                   1067:
                   1068:        log_debug("%s: %s, %u at %u,%u", __func__, c->name, nx, px, py);
                   1069:
                   1070:        if (tty_clamp_line(tty, ctx, px, py, nx, &i, &x, &rx, &ry))
                   1071:                tty_clear_line(tty, ctx->wp, ry, x, rx, bg);
                   1072: }
                   1073:
                   1074: /* Clamp area position to visible part of pane. */
                   1075: static int
                   1076: tty_clamp_area(struct tty *tty, const struct tty_ctx *ctx, u_int px, u_int py,
                   1077:     u_int nx, u_int ny, u_int *i, u_int *j, u_int *x, u_int *y, u_int *rx,
                   1078:     u_int *ry)
                   1079: {
                   1080:        struct window_pane      *wp = ctx->wp;
                   1081:        u_int                    xoff = wp->xoff + px, yoff = wp->yoff + py;
                   1082:
                   1083:        if (!tty_is_visible(tty, ctx, px, py, nx, ny))
                   1084:                return (0);
                   1085:
                   1086:        if (xoff >= ctx->ox && xoff + nx <= ctx->ox + ctx->sx) {
                   1087:                /* All visible. */
                   1088:                *i = 0;
                   1089:                *x = ctx->xoff + px - ctx->ox;
                   1090:                *rx = nx;
                   1091:        } else if (xoff < ctx->ox && xoff + nx > ctx->ox + ctx->sx) {
                   1092:                /* Both left and right not visible. */
                   1093:                *i = ctx->ox;
                   1094:                *x = 0;
                   1095:                *rx = ctx->sx;
                   1096:        } else if (xoff < ctx->ox) {
                   1097:                /* Left not visible. */
                   1098:                *i = ctx->ox - (ctx->xoff + px);
                   1099:                *x = 0;
                   1100:                *rx = nx - *i;
                   1101:        } else {
                   1102:                /* Right not visible. */
                   1103:                *i = 0;
                   1104:                *x = (ctx->xoff + px) - ctx->ox;
                   1105:                *rx = ctx->sx - *x;
                   1106:        }
                   1107:        if (*rx > nx)
                   1108:                fatalx("%s: x too big, %u > %u", __func__, *rx, nx);
                   1109:
                   1110:        if (yoff >= ctx->oy && yoff + ny <= ctx->oy + ctx->sy) {
                   1111:                /* All visible. */
                   1112:                *j = 0;
                   1113:                *y = ctx->yoff + py - ctx->oy;
                   1114:                *ry = ny;
                   1115:        } else if (yoff < ctx->oy && yoff + ny > ctx->oy + ctx->sy) {
1.327     nicm     1116:                /* Both top and bottom not visible. */
1.309     nicm     1117:                *j = ctx->oy;
                   1118:                *y = 0;
                   1119:                *ry = ctx->sy;
                   1120:        } else if (yoff < ctx->oy) {
1.327     nicm     1121:                /* Top not visible. */
1.309     nicm     1122:                *j = ctx->oy - (ctx->yoff + py);
                   1123:                *y = 0;
                   1124:                *ry = ny - *j;
                   1125:        } else {
1.327     nicm     1126:                /* Bottom not visible. */
1.309     nicm     1127:                *j = 0;
                   1128:                *y = (ctx->yoff + py) - ctx->oy;
                   1129:                *ry = ctx->sy - *y;
                   1130:        }
                   1131:        if (*ry > ny)
                   1132:                fatalx("%s: y too big, %u > %u", __func__, *ry, ny);
                   1133:
                   1134:        return (1);
                   1135: }
                   1136:
                   1137: /* Clear an area, adjusting to visible part of pane. */
1.271     nicm     1138: static void
1.317     nicm     1139: tty_clear_area(struct tty *tty, struct window_pane *wp, u_int py, u_int ny,
                   1140:     u_int px, u_int nx, u_int bg)
1.271     nicm     1141: {
1.309     nicm     1142:        struct client   *c = tty->client;
                   1143:        u_int            yy;
                   1144:        char             tmp[64];
1.271     nicm     1145:
1.309     nicm     1146:        log_debug("%s: %s, %u,%u at %u,%u", __func__, c->name, nx, ny, px, py);
1.271     nicm     1147:
                   1148:        /* Nothing to clear. */
                   1149:        if (nx == 0 || ny == 0)
                   1150:                return;
                   1151:
                   1152:        /* If genuine BCE is available, can try escape sequences. */
                   1153:        if (!tty_fake_bce(tty, wp, bg)) {
1.276     nicm     1154:                /* Use ED if clearing off the bottom of the terminal. */
1.271     nicm     1155:                if (px == 0 &&
                   1156:                    px + nx >= tty->sx &&
                   1157:                    py + ny >= tty->sy &&
                   1158:                    tty_term_has(tty->term, TTYC_ED)) {
                   1159:                        tty_cursor(tty, 0, py);
                   1160:                        tty_putcode(tty, TTYC_ED);
1.274     nicm     1161:                        return;
                   1162:                }
                   1163:
                   1164:                /*
1.276     nicm     1165:                 * On VT420 compatible terminals we can use DECFRA if the
                   1166:                 * background colour isn't default (because it doesn't work
                   1167:                 * after SGR 0).
1.274     nicm     1168:                 */
1.359     nicm     1169:                if ((tty->term->flags & TERM_DECFRA) && !COLOUR_DEFAULT(bg)) {
1.274     nicm     1170:                        xsnprintf(tmp, sizeof tmp, "\033[32;%u;%u;%u;%u$x",
                   1171:                            py + 1, px + 1, py + ny, px + nx);
                   1172:                        tty_puts(tty, tmp);
1.276     nicm     1173:                        return;
                   1174:                }
                   1175:
1.280     nicm     1176:                /* Full lines can be scrolled away to clear them. */
                   1177:                if (px == 0 &&
1.281     nicm     1178:                    px + nx >= tty->sx &&
1.280     nicm     1179:                    ny > 2 &&
                   1180:                    tty_term_has(tty->term, TTYC_CSR) &&
                   1181:                    tty_term_has(tty->term, TTYC_INDN)) {
                   1182:                        tty_region(tty, py, py + ny - 1);
                   1183:                        tty_margin_off(tty);
1.284     nicm     1184:                        tty_putcode1(tty, TTYC_INDN, ny);
1.280     nicm     1185:                        return;
                   1186:                }
                   1187:
1.276     nicm     1188:                /*
                   1189:                 * If margins are supported, can just scroll the area off to
                   1190:                 * clear it.
                   1191:                 */
1.277     nicm     1192:                if (nx > 2 &&
                   1193:                    ny > 2 &&
1.280     nicm     1194:                    tty_term_has(tty->term, TTYC_CSR) &&
1.277     nicm     1195:                    tty_use_margin(tty) &&
                   1196:                    tty_term_has(tty->term, TTYC_INDN)) {
1.276     nicm     1197:                        tty_region(tty, py, py + ny - 1);
                   1198:                        tty_margin(tty, px, px + nx - 1);
1.284     nicm     1199:                        tty_putcode1(tty, TTYC_INDN, ny);
1.271     nicm     1200:                        return;
                   1201:                }
                   1202:        }
                   1203:
                   1204:        /* Couldn't use an escape sequence, loop over the lines. */
                   1205:        for (yy = py; yy < py + ny; yy++)
                   1206:                tty_clear_line(tty, wp, yy, px, nx, bg);
                   1207: }
                   1208:
1.309     nicm     1209: /* Clear an area in a pane. */
                   1210: static void
                   1211: tty_clear_pane_area(struct tty *tty, const struct tty_ctx *ctx, u_int py,
                   1212:     u_int ny, u_int px, u_int nx, u_int bg)
                   1213: {
                   1214:        u_int   i, j, x, y, rx, ry;
                   1215:
                   1216:        if (tty_clamp_area(tty, ctx, px, py, nx, ny, &i, &j, &x, &y, &rx, &ry))
                   1217:                tty_clear_area(tty, ctx->wp, y, ry, x, rx, bg);
                   1218: }
                   1219:
                   1220: static void
                   1221: tty_draw_pane(struct tty *tty, const struct tty_ctx *ctx, u_int py)
1.176     nicm     1222: {
1.309     nicm     1223:        struct window_pane      *wp = ctx->wp;
                   1224:        struct screen           *s = wp->screen;
                   1225:        u_int                    nx = screen_size_x(s), i, x, rx, ry;
                   1226:
                   1227:        log_debug("%s: %s %u %d", __func__, tty->client->name, py, ctx->bigger);
                   1228:
                   1229:        if (!ctx->bigger) {
                   1230:                tty_draw_line(tty, wp, s, 0, py, nx, ctx->xoff, ctx->yoff + py);
                   1231:                return;
                   1232:        }
                   1233:        if (tty_clamp_line(tty, ctx, 0, py, nx, &i, &x, &rx, &ry))
                   1234:                tty_draw_line(tty, wp, s, i, py, rx, x, ry);
1.176     nicm     1235: }
                   1236:
1.298     nicm     1237: static const struct grid_cell *
                   1238: tty_check_codeset(struct tty *tty, const struct grid_cell *gc)
                   1239: {
                   1240:        static struct grid_cell new;
                   1241:        u_int                   n;
                   1242:
                   1243:        /* Characters less than 0x7f are always fine, no matter what. */
                   1244:        if (gc->data.size == 1 && *gc->data.data < 0x7f)
                   1245:                return (gc);
                   1246:
                   1247:        /* UTF-8 terminal and a UTF-8 character - fine. */
1.359     nicm     1248:        if (tty->client->flags & CLIENT_UTF8)
1.298     nicm     1249:                return (gc);
                   1250:
                   1251:        /* Replace by the right number of underscores. */
                   1252:        n = gc->data.width;
                   1253:        if (n > UTF8_SIZE)
                   1254:                n = UTF8_SIZE;
                   1255:        memcpy(&new, gc, sizeof new);
                   1256:        new.data.size = n;
                   1257:        memset(new.data.data, '_', n);
                   1258:        return (&new);
                   1259: }
                   1260:
1.346     nicm     1261: static int
                   1262: tty_check_overlay(struct tty *tty, u_int px, u_int py)
                   1263: {
                   1264:        struct client   *c = tty->client;
                   1265:
                   1266:        if (c->overlay_check == NULL)
                   1267:                return (1);
                   1268:        return (c->overlay_check(c, px, py));
                   1269: }
                   1270:
1.176     nicm     1271: void
1.317     nicm     1272: tty_draw_line(struct tty *tty, struct window_pane *wp, struct screen *s,
                   1273:     u_int px, u_int py, u_int nx, u_int atx, u_int aty)
1.1       nicm     1274: {
1.297     nicm     1275:        struct grid             *gd = s->grid;
1.250     nicm     1276:        struct grid_cell         gc, last;
1.298     nicm     1277:        const struct grid_cell  *gcp;
1.309     nicm     1278:        struct grid_line        *gl;
                   1279:        u_int                    i, j, ux, sx, width;
1.329     nicm     1280:        int                      flags, cleared = 0, wrapped = 0;
1.250     nicm     1281:        char                     buf[512];
1.315     nicm     1282:        size_t                   len;
1.303     nicm     1283:        u_int                    cellsize;
1.1       nicm     1284:
1.309     nicm     1285:        log_debug("%s: px=%u py=%u nx=%u atx=%u aty=%u", __func__,
                   1286:            px, py, nx, atx, aty);
                   1287:
                   1288:        /*
                   1289:         * py is the line in the screen to draw.
                   1290:         * px is the start x and nx is the width to draw.
                   1291:         * atx,aty is the line on the terminal to draw it.
                   1292:         */
                   1293:
1.259     nicm     1294:        flags = (tty->flags & TTY_NOCURSOR);
1.181     nicm     1295:        tty->flags |= TTY_NOCURSOR;
                   1296:        tty_update_mode(tty, tty->mode, s);
1.35      nicm     1297:
1.214     nicm     1298:        tty_region_off(tty);
                   1299:        tty_margin_off(tty);
                   1300:
1.273     nicm     1301:        /*
                   1302:         * Clamp the width to cellsize - note this is not cellused, because
                   1303:         * there may be empty background cells after it (from BCE).
                   1304:         */
1.1       nicm     1305:        sx = screen_size_x(s);
1.309     nicm     1306:        if (nx > sx)
                   1307:                nx = sx;
1.303     nicm     1308:        cellsize = grid_get_line(gd, gd->hsize + py)->cellsize;
                   1309:        if (sx > cellsize)
                   1310:                sx = cellsize;
1.1       nicm     1311:        if (sx > tty->sx)
                   1312:                sx = tty->sx;
1.309     nicm     1313:        if (sx > nx)
                   1314:                sx = nx;
1.292     nicm     1315:        ux = 0;
1.1       nicm     1316:
1.309     nicm     1317:        if (py == 0)
                   1318:                gl = NULL;
                   1319:        else
                   1320:                gl = grid_get_line(gd, gd->hsize + py - 1);
1.268     nicm     1321:        if (wp == NULL ||
1.309     nicm     1322:            gl == NULL ||
                   1323:            (~gl->flags & GRID_LINE_WRAPPED) ||
                   1324:            atx != 0 ||
1.268     nicm     1325:            tty->cx < tty->sx ||
1.309     nicm     1326:            nx < tty->sx) {
                   1327:                if (nx < tty->sx &&
                   1328:                    atx == 0 &&
                   1329:                    px + sx != nx &&
1.268     nicm     1330:                    tty_term_has(tty->term, TTYC_EL1) &&
                   1331:                    !tty_fake_bce(tty, wp, 8)) {
                   1332:                        tty_default_attributes(tty, wp, 8);
1.309     nicm     1333:                        tty_cursor(tty, nx - 1, aty);
1.268     nicm     1334:                        tty_putcode(tty, TTYC_EL1);
                   1335:                        cleared = 1;
                   1336:                }
1.329     nicm     1337:        } else {
1.309     nicm     1338:                log_debug("%s: wrapped line %u", __func__, aty);
1.329     nicm     1339:                wrapped = 1;
                   1340:        }
1.250     nicm     1341:
                   1342:        memcpy(&last, &grid_default_cell, sizeof last);
                   1343:        len = 0;
                   1344:        width = 0;
1.46      nicm     1345:
1.1       nicm     1346:        for (i = 0; i < sx; i++) {
1.309     nicm     1347:                grid_view_get_cell(gd, px + i, py, &gc);
1.298     nicm     1348:                gcp = tty_check_codeset(tty, &gc);
1.250     nicm     1349:                if (len != 0 &&
1.346     nicm     1350:                    (!tty_check_overlay(tty, atx + ux + width, aty) ||
                   1351:                    (gcp->attr & GRID_ATTR_CHARSET) ||
1.298     nicm     1352:                    gcp->flags != last.flags ||
                   1353:                    gcp->attr != last.attr ||
                   1354:                    gcp->fg != last.fg ||
                   1355:                    gcp->bg != last.bg ||
1.328     nicm     1356:                    gcp->us != last.us ||
1.315     nicm     1357:                    ux + width + gcp->data.width > nx ||
1.298     nicm     1358:                    (sizeof buf) - len < gcp->data.size)) {
1.316     nicm     1359:                        tty_attributes(tty, &last, wp);
1.315     nicm     1360:                        if (last.flags & GRID_FLAG_CLEARED) {
                   1361:                                log_debug("%s: %zu cleared", __func__, len);
                   1362:                                tty_clear_line(tty, wp, aty, atx + ux, width,
                   1363:                                    last.bg);
                   1364:                        } else {
1.329     nicm     1365:                                if (!wrapped || atx != 0 || ux != 0)
                   1366:                                        tty_cursor(tty, atx + ux, aty);
1.315     nicm     1367:                                tty_putn(tty, buf, len, width);
                   1368:                        }
1.292     nicm     1369:                        ux += width;
1.250     nicm     1370:
                   1371:                        len = 0;
                   1372:                        width = 0;
1.329     nicm     1373:                        wrapped = 0;
1.250     nicm     1374:                }
                   1375:
1.298     nicm     1376:                if (gcp->flags & GRID_FLAG_SELECTED)
1.299     nicm     1377:                        screen_select_cell(s, &last, gcp);
1.250     nicm     1378:                else
1.299     nicm     1379:                        memcpy(&last, gcp, sizeof last);
1.346     nicm     1380:                if (!tty_check_overlay(tty, atx + ux, aty))
                   1381:                        ux += gcp->data.width;
                   1382:                else if (ux + gcp->data.width > nx) {
1.299     nicm     1383:                        tty_attributes(tty, &last, wp);
1.315     nicm     1384:                        tty_cursor(tty, atx + ux, aty);
1.298     nicm     1385:                        for (j = 0; j < gcp->data.width; j++) {
1.309     nicm     1386:                                if (ux + j > nx)
1.297     nicm     1387:                                        break;
                   1388:                                tty_putc(tty, ' ');
                   1389:                                ux++;
                   1390:                        }
1.299     nicm     1391:                } else if (gcp->attr & GRID_ATTR_CHARSET) {
                   1392:                        tty_attributes(tty, &last, wp);
1.315     nicm     1393:                        tty_cursor(tty, atx + ux, aty);
1.299     nicm     1394:                        for (j = 0; j < gcp->data.size; j++)
                   1395:                                tty_putc(tty, gcp->data.data[j]);
1.346     nicm     1396:                        ux += gcp->data.width;
1.299     nicm     1397:                } else {
1.298     nicm     1398:                        memcpy(buf + len, gcp->data.data, gcp->data.size);
                   1399:                        len += gcp->data.size;
                   1400:                        width += gcp->data.width;
1.250     nicm     1401:                }
                   1402:        }
1.315     nicm     1403:        if (len != 0 && ((~last.flags & GRID_FLAG_CLEARED) || last.bg != 8)) {
1.316     nicm     1404:                tty_attributes(tty, &last, wp);
1.315     nicm     1405:                if (last.flags & GRID_FLAG_CLEARED) {
                   1406:                        log_debug("%s: %zu cleared (end)", __func__, len);
                   1407:                        tty_clear_line(tty, wp, aty, atx + ux, width, last.bg);
                   1408:                } else {
1.329     nicm     1409:                        if (!wrapped || atx != 0 || ux != 0)
                   1410:                                tty_cursor(tty, atx + ux, aty);
1.291     nicm     1411:                        tty_putn(tty, buf, len, width);
                   1412:                }
1.315     nicm     1413:                ux += width;
1.1       nicm     1414:        }
                   1415:
1.309     nicm     1416:        if (!cleared && ux < nx) {
1.315     nicm     1417:                log_debug("%s: %u to end of line (%zu cleared)", __func__,
                   1418:                    nx - ux, len);
1.210     nicm     1419:                tty_default_attributes(tty, wp, 8);
1.309     nicm     1420:                tty_clear_line(tty, wp, aty, atx + ux, nx - ux, 8);
1.35      nicm     1421:        }
1.1       nicm     1422:
1.181     nicm     1423:        tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
1.107     nicm     1424:        tty_update_mode(tty, tty->mode, s);
1.15      nicm     1425: }
                   1426:
1.348     nicm     1427: void
                   1428: tty_sync_start(struct tty *tty)
                   1429: {
1.361     nicm     1430:        if (tty->flags & TTY_BLOCK)
                   1431:                return;
                   1432:        if (tty->flags & TTY_SYNCING)
                   1433:                return;
                   1434:        tty->flags |= TTY_SYNCING;
                   1435:
                   1436:        if (tty_term_has(tty->term, TTYC_SYNC)) {
                   1437:                log_debug("%s sync start", tty->client->name);
1.360     nicm     1438:                tty_putcode1(tty, TTYC_SYNC, 1);
1.357     nicm     1439:        }
1.348     nicm     1440: }
                   1441:
                   1442: void
                   1443: tty_sync_end(struct tty *tty)
                   1444: {
1.361     nicm     1445:        if (tty->flags & TTY_BLOCK)
                   1446:                return;
                   1447:        if (~tty->flags & TTY_SYNCING)
                   1448:                return;
                   1449:        tty->flags &= ~TTY_SYNCING;
                   1450:
                   1451:        if (tty_term_has(tty->term, TTYC_SYNC)) {
                   1452:                log_debug("%s sync end", tty->client->name);
1.360     nicm     1453:                tty_putcode1(tty, TTYC_SYNC, 2);
1.357     nicm     1454:        }
1.348     nicm     1455: }
                   1456:
1.201     nicm     1457: static int
1.182     nicm     1458: tty_client_ready(struct client *c, struct window_pane *wp)
                   1459: {
                   1460:        if (c->session == NULL || c->tty.term == NULL)
                   1461:                return (0);
1.305     nicm     1462:        if (c->flags & (CLIENT_REDRAWWINDOW|CLIENT_SUSPENDED))
1.182     nicm     1463:                return (0);
                   1464:        if (c->tty.flags & TTY_FREEZE)
                   1465:                return (0);
                   1466:        if (c->session->curw->window != wp->window)
                   1467:                return (0);
1.309     nicm     1468:        if (wp->layout_cell == NULL)
                   1469:                return (0);
1.182     nicm     1470:        return (1);
                   1471: }
                   1472:
1.15      nicm     1473: void
1.182     nicm     1474: tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
                   1475:     struct tty_ctx *ctx)
1.15      nicm     1476: {
                   1477:        struct window_pane      *wp = ctx->wp;
                   1478:        struct client           *c;
                   1479:
                   1480:        if (wp == NULL)
                   1481:                return;
1.309     nicm     1482:        if (wp->flags & (PANE_REDRAW|PANE_DROP))
1.15      nicm     1483:                return;
                   1484:
1.178     nicm     1485:        TAILQ_FOREACH(c, &clients, entry) {
1.182     nicm     1486:                if (!tty_client_ready(c, wp))
1.15      nicm     1487:                        continue;
1.358     nicm     1488:                if (c->flags & CLIENT_REDRAWPANES) {
                   1489:                        /*
                   1490:                         * Redraw is already deferred to redraw another pane -
                   1491:                         * redraw this one also when that happens.
                   1492:                         */
1.363     nicm     1493:                        log_debug("adding %%%u to deferred redraw", wp->id);
1.358     nicm     1494:                        wp->flags |= PANE_REDRAW;
                   1495:                        break;
                   1496:                }
1.15      nicm     1497:
1.309     nicm     1498:                ctx->bigger = tty_window_offset(&c->tty, &ctx->ox, &ctx->oy,
                   1499:                    &ctx->sx, &ctx->sy);
                   1500:
1.139     nicm     1501:                ctx->xoff = wp->xoff;
                   1502:                ctx->yoff = wp->yoff;
1.309     nicm     1503:
1.139     nicm     1504:                if (status_at_line(c) == 0)
1.309     nicm     1505:                        ctx->yoff += status_line_size(c);
1.113     nicm     1506:
1.139     nicm     1507:                cmdfn(&c->tty, ctx);
1.1       nicm     1508:        }
                   1509: }
                   1510:
                   1511: void
1.24      nicm     1512: tty_cmd_insertcharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1513: {
1.77      nicm     1514:        struct window_pane      *wp = ctx->wp;
1.1       nicm     1515:
1.309     nicm     1516:        if (ctx->bigger ||
                   1517:            !tty_pane_full_width(tty, ctx) ||
1.210     nicm     1518:            tty_fake_bce(tty, wp, ctx->bg) ||
                   1519:            (!tty_term_has(tty->term, TTYC_ICH) &&
                   1520:            !tty_term_has(tty->term, TTYC_ICH1))) {
1.309     nicm     1521:                tty_draw_pane(tty, ctx, ctx->ocy);
1.1       nicm     1522:                return;
                   1523:        }
                   1524:
1.210     nicm     1525:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1526:
1.77      nicm     1527:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm     1528:
1.206     nicm     1529:        tty_emulate_repeat(tty, TTYC_ICH, TTYC_ICH1, ctx->num);
1.1       nicm     1530: }
                   1531:
                   1532: void
1.24      nicm     1533: tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1534: {
1.77      nicm     1535:        struct window_pane      *wp = ctx->wp;
1.1       nicm     1536:
1.309     nicm     1537:        if (ctx->bigger ||
                   1538:            !tty_pane_full_width(tty, ctx) ||
1.210     nicm     1539:            tty_fake_bce(tty, wp, ctx->bg) ||
1.26      nicm     1540:            (!tty_term_has(tty->term, TTYC_DCH) &&
                   1541:            !tty_term_has(tty->term, TTYC_DCH1))) {
1.309     nicm     1542:                tty_draw_pane(tty, ctx, ctx->ocy);
1.1       nicm     1543:                return;
                   1544:        }
                   1545:
1.210     nicm     1546:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1547:
1.77      nicm     1548:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.41      nicm     1549:
1.206     nicm     1550:        tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
1.146     nicm     1551: }
                   1552:
                   1553: void
                   1554: tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
                   1555: {
1.309     nicm     1556:        if (ctx->bigger) {
                   1557:                tty_draw_pane(tty, ctx, ctx->ocy);
                   1558:                return;
                   1559:        }
                   1560:
1.275     nicm     1561:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.146     nicm     1562:
                   1563:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
                   1564:
1.210     nicm     1565:        if (tty_term_has(tty->term, TTYC_ECH) &&
1.262     nicm     1566:            !tty_fake_bce(tty, ctx->wp, 8))
1.146     nicm     1567:                tty_putcode1(tty, TTYC_ECH, ctx->num);
1.257     nicm     1568:        else
                   1569:                tty_repeat_space(tty, ctx->num);
1.1       nicm     1570: }
                   1571:
                   1572: void
1.24      nicm     1573: tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1574: {
1.309     nicm     1575:        if (ctx->bigger ||
                   1576:            !tty_pane_full_width(tty, ctx) ||
1.210     nicm     1577:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.77      nicm     1578:            !tty_term_has(tty->term, TTYC_CSR) ||
1.307     nicm     1579:            !tty_term_has(tty->term, TTYC_IL1) ||
                   1580:            ctx->wp->sx == 1 ||
                   1581:            ctx->wp->sy == 1) {
1.14      nicm     1582:                tty_redraw_region(tty, ctx);
1.1       nicm     1583:                return;
                   1584:        }
                   1585:
1.210     nicm     1586:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm     1587:
1.77      nicm     1588:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm     1589:        tty_margin_off(tty);
1.77      nicm     1590:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1591:
1.12      nicm     1592:        tty_emulate_repeat(tty, TTYC_IL, TTYC_IL1, ctx->num);
1.279     nicm     1593:        tty->cx = tty->cy = UINT_MAX;
1.1       nicm     1594: }
                   1595:
                   1596: void
1.24      nicm     1597: tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1598: {
1.309     nicm     1599:        if (ctx->bigger ||
                   1600:            !tty_pane_full_width(tty, ctx) ||
1.210     nicm     1601:            tty_fake_bce(tty, ctx->wp, ctx->bg) ||
1.72      nicm     1602:            !tty_term_has(tty->term, TTYC_CSR) ||
1.307     nicm     1603:            !tty_term_has(tty->term, TTYC_DL1) ||
                   1604:            ctx->wp->sx == 1 ||
                   1605:            ctx->wp->sy == 1) {
1.14      nicm     1606:                tty_redraw_region(tty, ctx);
1.1       nicm     1607:                return;
                   1608:        }
                   1609:
1.210     nicm     1610:        tty_default_attributes(tty, ctx->wp, ctx->bg);
1.1       nicm     1611:
1.77      nicm     1612:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.214     nicm     1613:        tty_margin_off(tty);
1.77      nicm     1614:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1615:
1.12      nicm     1616:        tty_emulate_repeat(tty, TTYC_DL, TTYC_DL1, ctx->num);
1.279     nicm     1617:        tty->cx = tty->cy = UINT_MAX;
1.1       nicm     1618: }
                   1619:
                   1620: void
1.24      nicm     1621: tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1622: {
1.77      nicm     1623:        struct window_pane      *wp = ctx->wp;
1.309     nicm     1624:        u_int                    nx;
1.1       nicm     1625:
1.210     nicm     1626:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1627:
1.271     nicm     1628:        nx = screen_size_x(wp->screen);
1.309     nicm     1629:        tty_clear_pane_line(tty, ctx, ctx->ocy, 0, nx, ctx->bg);
1.1       nicm     1630: }
                   1631:
                   1632: void
1.24      nicm     1633: tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1634: {
1.77      nicm     1635:        struct window_pane      *wp = ctx->wp;
1.309     nicm     1636:        u_int                    nx;
1.1       nicm     1637:
1.210     nicm     1638:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1639:
1.271     nicm     1640:        nx = screen_size_x(wp->screen) - ctx->ocx;
1.309     nicm     1641:        tty_clear_pane_line(tty, ctx, ctx->ocy, ctx->ocx, nx, ctx->bg);
1.1       nicm     1642: }
                   1643:
                   1644: void
1.24      nicm     1645: tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1646: {
1.210     nicm     1647:        struct window_pane      *wp = ctx->wp;
                   1648:
                   1649:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1650:
1.309     nicm     1651:        tty_clear_pane_line(tty, ctx, ctx->ocy, 0, ctx->ocx + 1, ctx->bg);
1.1       nicm     1652: }
                   1653:
                   1654: void
1.24      nicm     1655: tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1656: {
1.278     nicm     1657:        struct window_pane      *wp = ctx->wp;
                   1658:
1.56      nicm     1659:        if (ctx->ocy != ctx->orupper)
                   1660:                return;
                   1661:
1.309     nicm     1662:        if (ctx->bigger ||
1.331     nicm     1663:            (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.278     nicm     1664:            tty_fake_bce(tty, wp, 8) ||
1.70      nicm     1665:            !tty_term_has(tty->term, TTYC_CSR) ||
1.331     nicm     1666:            (!tty_term_has(tty->term, TTYC_RI) &&
                   1667:            !tty_term_has(tty->term, TTYC_RIN)) ||
1.307     nicm     1668:            ctx->wp->sx == 1 ||
                   1669:            ctx->wp->sy == 1) {
1.14      nicm     1670:                tty_redraw_region(tty, ctx);
1.1       nicm     1671:                return;
                   1672:        }
                   1673:
1.278     nicm     1674:        tty_default_attributes(tty, wp, ctx->bg);
1.77      nicm     1675:
1.56      nicm     1676:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.331     nicm     1677:        tty_margin_pane(tty, ctx);
1.56      nicm     1678:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
1.77      nicm     1679:
1.331     nicm     1680:        if (tty_term_has(tty->term, TTYC_RI))
                   1681:                tty_putcode(tty, TTYC_RI);
                   1682:        else
                   1683:                tty_putcode1(tty, TTYC_RIN, 1);
1.1       nicm     1684: }
                   1685:
                   1686: void
1.24      nicm     1687: tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1688: {
1.77      nicm     1689:        struct window_pane      *wp = ctx->wp;
1.1       nicm     1690:
1.56      nicm     1691:        if (ctx->ocy != ctx->orlower)
                   1692:                return;
                   1693:
1.309     nicm     1694:        if (ctx->bigger ||
                   1695:            (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.262     nicm     1696:            tty_fake_bce(tty, wp, 8) ||
1.307     nicm     1697:            !tty_term_has(tty->term, TTYC_CSR) ||
                   1698:            wp->sx == 1 ||
                   1699:            wp->sy == 1) {
1.236     nicm     1700:                tty_redraw_region(tty, ctx);
1.1       nicm     1701:                return;
                   1702:        }
1.52      nicm     1703:
1.278     nicm     1704:        tty_default_attributes(tty, wp, ctx->bg);
1.77      nicm     1705:
1.56      nicm     1706:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.212     nicm     1707:        tty_margin_pane(tty, ctx);
                   1708:
                   1709:        /*
1.301     nicm     1710:         * If we want to wrap a pane while using margins, the cursor needs to
                   1711:         * be exactly on the right of the region. If the cursor is entirely off
                   1712:         * the edge - move it back to the right. Some terminals are funny about
                   1713:         * this and insert extra spaces, so only use the right if margins are
                   1714:         * enabled.
1.212     nicm     1715:         */
1.301     nicm     1716:        if (ctx->xoff + ctx->ocx > tty->rright) {
                   1717:                if (!tty_use_margin(tty))
                   1718:                        tty_cursor(tty, 0, ctx->yoff + ctx->ocy);
                   1719:                else
                   1720:                        tty_cursor(tty, tty->rright, ctx->yoff + ctx->ocy);
                   1721:        } else
1.212     nicm     1722:                tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
1.77      nicm     1723:
1.56      nicm     1724:        tty_putc(tty, '\n');
1.240     nicm     1725: }
                   1726:
                   1727: void
                   1728: tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
                   1729: {
                   1730:        struct window_pane      *wp = ctx->wp;
1.284     nicm     1731:        u_int                    i;
1.240     nicm     1732:
1.309     nicm     1733:        if (ctx->bigger ||
                   1734:            (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
1.262     nicm     1735:            tty_fake_bce(tty, wp, 8) ||
1.307     nicm     1736:            !tty_term_has(tty->term, TTYC_CSR) ||
                   1737:            wp->sx == 1 ||
                   1738:            wp->sy == 1) {
1.240     nicm     1739:                tty_redraw_region(tty, ctx);
                   1740:                return;
                   1741:        }
                   1742:
1.278     nicm     1743:        tty_default_attributes(tty, wp, ctx->bg);
1.240     nicm     1744:
                   1745:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1746:        tty_margin_pane(tty, ctx);
                   1747:
1.284     nicm     1748:        if (ctx->num == 1 || !tty_term_has(tty->term, TTYC_INDN)) {
1.301     nicm     1749:                if (!tty_use_margin(tty))
                   1750:                        tty_cursor(tty, 0, tty->rlower);
                   1751:                else
                   1752:                        tty_cursor(tty, tty->rright, tty->rlower);
1.284     nicm     1753:                for (i = 0; i < ctx->num; i++)
1.240     nicm     1754:                        tty_putc(tty, '\n');
1.301     nicm     1755:        } else {
1.353     nicm     1756:                if (tty->cy == UINT_MAX)
                   1757:                        tty_cursor(tty, 0, 0);
                   1758:                else
                   1759:                        tty_cursor(tty, 0, tty->cy);
1.284     nicm     1760:                tty_putcode1(tty, TTYC_INDN, ctx->num);
1.331     nicm     1761:        }
                   1762: }
                   1763:
                   1764: void
                   1765: tty_cmd_scrolldown(struct tty *tty, const struct tty_ctx *ctx)
                   1766: {
                   1767:        struct window_pane      *wp = ctx->wp;
                   1768:        u_int                    i;
                   1769:
                   1770:        if (ctx->bigger ||
                   1771:            (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
                   1772:            tty_fake_bce(tty, wp, 8) ||
                   1773:            !tty_term_has(tty->term, TTYC_CSR) ||
                   1774:            (!tty_term_has(tty->term, TTYC_RI) &&
                   1775:            !tty_term_has(tty->term, TTYC_RIN)) ||
                   1776:            wp->sx == 1 ||
                   1777:            wp->sy == 1) {
                   1778:                tty_redraw_region(tty, ctx);
                   1779:                return;
                   1780:        }
                   1781:
                   1782:        tty_default_attributes(tty, wp, ctx->bg);
                   1783:
                   1784:        tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
                   1785:        tty_margin_pane(tty, ctx);
                   1786:        tty_cursor_pane(tty, ctx, ctx->ocx, ctx->orupper);
                   1787:
                   1788:        if (tty_term_has(tty->term, TTYC_RIN))
                   1789:                tty_putcode1(tty, TTYC_RIN, ctx->num);
                   1790:        else {
                   1791:                for (i = 0; i < ctx->num; i++)
                   1792:                        tty_putcode(tty, TTYC_RI);
1.301     nicm     1793:        }
1.1       nicm     1794: }
                   1795:
                   1796: void
1.24      nicm     1797: tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1798: {
1.77      nicm     1799:        struct window_pane      *wp = ctx->wp;
1.271     nicm     1800:        u_int                    px, py, nx, ny;
1.1       nicm     1801:
1.210     nicm     1802:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1803:
1.271     nicm     1804:        tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1.214     nicm     1805:        tty_margin_off(tty);
1.39      nicm     1806:
1.309     nicm     1807:        px = 0;
1.271     nicm     1808:        nx = screen_size_x(wp->screen);
1.309     nicm     1809:        py = ctx->ocy + 1;
1.271     nicm     1810:        ny = screen_size_y(wp->screen) - ctx->ocy - 1;
                   1811:
1.309     nicm     1812:        tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1.271     nicm     1813:
1.309     nicm     1814:        px = ctx->ocx;
1.271     nicm     1815:        nx = screen_size_x(wp->screen) - ctx->ocx;
1.309     nicm     1816:        py = ctx->ocy;
1.271     nicm     1817:
1.309     nicm     1818:        tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1.1       nicm     1819: }
                   1820:
                   1821: void
1.24      nicm     1822: tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1823: {
1.77      nicm     1824:        struct window_pane      *wp = ctx->wp;
1.271     nicm     1825:        u_int                    px, py, nx, ny;
1.1       nicm     1826:
1.227     nicm     1827:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1828:
1.271     nicm     1829:        tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1.214     nicm     1830:        tty_margin_off(tty);
1.39      nicm     1831:
1.309     nicm     1832:        px = 0;
1.271     nicm     1833:        nx = screen_size_x(wp->screen);
1.309     nicm     1834:        py = 0;
1.319     nicm     1835:        ny = ctx->ocy;
1.271     nicm     1836:
1.309     nicm     1837:        tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1.271     nicm     1838:
1.309     nicm     1839:        px = 0;
1.271     nicm     1840:        nx = ctx->ocx + 1;
1.309     nicm     1841:        py = ctx->ocy;
1.271     nicm     1842:
1.309     nicm     1843:        tty_clear_pane_line(tty, ctx, py, px, nx, ctx->bg);
1.1       nicm     1844: }
                   1845:
                   1846: void
1.24      nicm     1847: tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1848: {
1.77      nicm     1849:        struct window_pane      *wp = ctx->wp;
1.271     nicm     1850:        u_int                    px, py, nx, ny;
1.1       nicm     1851:
1.210     nicm     1852:        tty_default_attributes(tty, wp, ctx->bg);
1.1       nicm     1853:
1.271     nicm     1854:        tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
1.214     nicm     1855:        tty_margin_off(tty);
1.39      nicm     1856:
1.309     nicm     1857:        px = 0;
1.271     nicm     1858:        nx = screen_size_x(wp->screen);
1.309     nicm     1859:        py = 0;
1.271     nicm     1860:        ny = screen_size_y(wp->screen);
                   1861:
1.309     nicm     1862:        tty_clear_pane_area(tty, ctx, py, ny, px, nx, ctx->bg);
1.4       nicm     1863: }
                   1864:
                   1865: void
1.24      nicm     1866: tty_cmd_alignmenttest(struct tty *tty, const struct tty_ctx *ctx)
1.4       nicm     1867: {
1.12      nicm     1868:        struct window_pane      *wp = ctx->wp;
                   1869:        struct screen           *s = wp->screen;
                   1870:        u_int                    i, j;
1.4       nicm     1871:
1.309     nicm     1872:        if (ctx->bigger) {
                   1873:                wp->flags |= PANE_REDRAW;
                   1874:                return;
                   1875:        }
                   1876:
1.176     nicm     1877:        tty_attributes(tty, &grid_default_cell, wp);
1.4       nicm     1878:
1.39      nicm     1879:        tty_region_pane(tty, ctx, 0, screen_size_y(s) - 1);
1.214     nicm     1880:        tty_margin_off(tty);
1.4       nicm     1881:
                   1882:        for (j = 0; j < screen_size_y(s); j++) {
1.41      nicm     1883:                tty_cursor_pane(tty, ctx, 0, j);
1.4       nicm     1884:                for (i = 0; i < screen_size_x(s); i++)
                   1885:                        tty_putc(tty, 'E');
1.1       nicm     1886:        }
                   1887: }
                   1888:
                   1889: void
1.24      nicm     1890: tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
1.1       nicm     1891: {
1.309     nicm     1892:        if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, 1, 1))
                   1893:                return;
                   1894:
                   1895:        if (ctx->xoff + ctx->ocx - ctx->ox > tty->sx - 1 &&
1.306     nicm     1896:            ctx->ocy == ctx->orlower &&
                   1897:            tty_pane_full_width(tty, ctx))
                   1898:                tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
1.46      nicm     1899:
1.306     nicm     1900:        tty_margin_off(tty);
1.253     nicm     1901:        tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1.1       nicm     1902:
1.237     nicm     1903:        tty_cell(tty, ctx->cell, ctx->wp);
1.239     nicm     1904: }
                   1905:
                   1906: void
                   1907: tty_cmd_cells(struct tty *tty, const struct tty_ctx *ctx)
                   1908: {
1.309     nicm     1909:        struct window_pane      *wp = ctx->wp;
                   1910:
                   1911:        if (!tty_is_visible(tty, ctx, ctx->ocx, ctx->ocy, ctx->num, 1))
                   1912:                return;
                   1913:
                   1914:        if (ctx->bigger &&
                   1915:            (ctx->xoff + ctx->ocx < ctx->ox ||
                   1916:            ctx->xoff + ctx->ocx + ctx->num > ctx->ox + ctx->sx)) {
                   1917:                if (!ctx->wrapped ||
                   1918:                    !tty_pane_full_width(tty, ctx) ||
1.359     nicm     1919:                    (tty->term->flags & TERM_NOXENL) ||
1.309     nicm     1920:                    ctx->xoff + ctx->ocx != 0 ||
                   1921:                    ctx->yoff + ctx->ocy != tty->cy + 1 ||
                   1922:                    tty->cx < tty->sx ||
                   1923:                    tty->cy == tty->rlower)
                   1924:                        tty_draw_pane(tty, ctx, ctx->ocy);
                   1925:                else
                   1926:                        wp->flags |= PANE_REDRAW;
                   1927:                return;
                   1928:        }
                   1929:
1.306     nicm     1930:        tty_margin_off(tty);
1.253     nicm     1931:        tty_cursor_pane_unless_wrap(tty, ctx, ctx->ocx, ctx->ocy);
1.239     nicm     1932:
                   1933:        tty_attributes(tty, ctx->cell, ctx->wp);
                   1934:        tty_putn(tty, ctx->ptr, ctx->num, ctx->num);
1.106     nicm     1935: }
                   1936:
                   1937: void
                   1938: tty_cmd_setselection(struct tty *tty, const struct tty_ctx *ctx)
                   1939: {
                   1940:        char    *buf;
                   1941:        size_t   off;
                   1942:
                   1943:        if (!tty_term_has(tty->term, TTYC_MS))
                   1944:                return;
                   1945:
                   1946:        off = 4 * ((ctx->num + 2) / 3) + 1; /* storage for base64 */
                   1947:        buf = xmalloc(off);
                   1948:
                   1949:        b64_ntop(ctx->ptr, ctx->num, buf, off);
                   1950:        tty_putcode_ptr2(tty, TTYC_MS, "", buf);
                   1951:
1.138     nicm     1952:        free(buf);
1.100     nicm     1953: }
                   1954:
                   1955: void
                   1956: tty_cmd_rawstring(struct tty *tty, const struct tty_ctx *ctx)
                   1957: {
1.256     nicm     1958:        tty_add(tty, ctx->ptr, ctx->num);
1.242     nicm     1959:        tty_invalidate(tty);
1.348     nicm     1960: }
                   1961:
                   1962: void
                   1963: tty_cmd_syncstart(struct tty *tty, __unused const struct tty_ctx *ctx)
                   1964: {
                   1965:        tty_sync_start(tty);
1.1       nicm     1966: }
                   1967:
1.207     nicm     1968: static void
1.317     nicm     1969: tty_cell(struct tty *tty, const struct grid_cell *gc, struct window_pane *wp)
1.1       nicm     1970: {
1.298     nicm     1971:        const struct grid_cell  *gcp;
1.1       nicm     1972:
                   1973:        /* Skip last character if terminal is stupid. */
1.359     nicm     1974:        if ((tty->term->flags & TERM_NOXENL) &&
1.211     nicm     1975:            tty->cy == tty->sy - 1 &&
                   1976:            tty->cx == tty->sx - 1)
1.1       nicm     1977:                return;
                   1978:
                   1979:        /* If this is a padding character, do nothing. */
                   1980:        if (gc->flags & GRID_FLAG_PADDING)
                   1981:                return;
                   1982:
                   1983:        /* Set the attributes. */
1.176     nicm     1984:        tty_attributes(tty, gc, wp);
1.1       nicm     1985:
1.147     nicm     1986:        /* Get the cell and if ASCII write with putc to do ACS translation. */
1.298     nicm     1987:        gcp = tty_check_codeset(tty, gc);
                   1988:        if (gcp->data.size == 1) {
                   1989:                if (*gcp->data.data < 0x20 || *gcp->data.data == 0x7f)
1.1       nicm     1990:                        return;
1.298     nicm     1991:                tty_putc(tty, *gcp->data.data);
1.1       nicm     1992:                return;
                   1993:        }
                   1994:
1.147     nicm     1995:        /* Write the data. */
1.298     nicm     1996:        tty_putn(tty, gcp->data.data, gcp->data.size, gcp->data.width);
1.1       nicm     1997: }
                   1998:
                   1999: void
                   2000: tty_reset(struct tty *tty)
                   2001: {
                   2002:        struct grid_cell        *gc = &tty->cell;
                   2003:
1.228     nicm     2004:        if (!grid_cells_equal(gc, &grid_default_cell)) {
1.285     nicm     2005:                if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
1.228     nicm     2006:                        tty_putcode(tty, TTYC_RMACS);
                   2007:                tty_putcode(tty, TTYC_SGR0);
                   2008:                memcpy(gc, &grid_default_cell, sizeof *gc);
                   2009:        }
1.1       nicm     2010:
1.228     nicm     2011:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   2012:        tty->last_wp = -1;
1.242     nicm     2013: }
                   2014:
                   2015: static void
                   2016: tty_invalidate(struct tty *tty)
                   2017: {
                   2018:        memcpy(&tty->cell, &grid_default_cell, sizeof tty->cell);
                   2019:
                   2020:        memcpy(&tty->last_cell, &grid_default_cell, sizeof tty->last_cell);
                   2021:        tty->last_wp = -1;
                   2022:
                   2023:        tty->cx = tty->cy = UINT_MAX;
                   2024:
                   2025:        tty->rupper = tty->rleft = UINT_MAX;
                   2026:        tty->rlower = tty->rright = UINT_MAX;
                   2027:
                   2028:        if (tty->flags & TTY_STARTED) {
1.330     nicm     2029:                if (tty_use_margin(tty))
1.365     nicm     2030:                        tty_putcode(tty, TTYC_ENMG);
1.242     nicm     2031:                tty_putcode(tty, TTYC_SGR0);
                   2032:
                   2033:                tty->mode = ALL_MODES;
                   2034:                tty_update_mode(tty, MODE_CURSOR, NULL);
                   2035:
                   2036:                tty_cursor(tty, 0, 0);
                   2037:                tty_region_off(tty);
                   2038:                tty_margin_off(tty);
                   2039:        } else
                   2040:                tty->mode = MODE_CURSOR;
1.1       nicm     2041: }
                   2042:
1.214     nicm     2043: /* Turn off margin. */
                   2044: void
                   2045: tty_region_off(struct tty *tty)
                   2046: {
                   2047:        tty_region(tty, 0, tty->sy - 1);
                   2048: }
                   2049:
1.40      nicm     2050: /* Set region inside pane. */
1.208     nicm     2051: static void
1.196     nicm     2052: tty_region_pane(struct tty *tty, const struct tty_ctx *ctx, u_int rupper,
                   2053:     u_int rlower)
1.1       nicm     2054: {
1.309     nicm     2055:        tty_region(tty, ctx->yoff + rupper - ctx->oy,
                   2056:            ctx->yoff + rlower - ctx->oy);
1.39      nicm     2057: }
                   2058:
1.40      nicm     2059: /* Set region at absolute position. */
1.214     nicm     2060: static void
1.40      nicm     2061: tty_region(struct tty *tty, u_int rupper, u_int rlower)
1.39      nicm     2062: {
                   2063:        if (tty->rlower == rlower && tty->rupper == rupper)
                   2064:                return;
1.1       nicm     2065:        if (!tty_term_has(tty->term, TTYC_CSR))
                   2066:                return;
1.39      nicm     2067:
                   2068:        tty->rupper = rupper;
                   2069:        tty->rlower = rlower;
1.55      nicm     2070:
                   2071:        /*
                   2072:         * Some terminals (such as PuTTY) do not correctly reset the cursor to
                   2073:         * 0,0 if it is beyond the last column (they do not reset their wrap
                   2074:         * flag so further output causes a line feed). As a workaround, do an
                   2075:         * explicit move to 0 first.
                   2076:         */
1.353     nicm     2077:        if (tty->cx >= tty->sx) {
                   2078:                if (tty->cy == UINT_MAX)
                   2079:                        tty_cursor(tty, 0, 0);
                   2080:                else
                   2081:                        tty_cursor(tty, 0, tty->cy);
                   2082:        }
1.42      nicm     2083:
1.39      nicm     2084:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.249     nicm     2085:        tty->cx = tty->cy = UINT_MAX;
1.212     nicm     2086: }
                   2087:
1.214     nicm     2088: /* Turn off margin. */
                   2089: void
                   2090: tty_margin_off(struct tty *tty)
                   2091: {
                   2092:        tty_margin(tty, 0, tty->sx - 1);
                   2093: }
                   2094:
1.212     nicm     2095: /* Set margin inside pane. */
                   2096: static void
                   2097: tty_margin_pane(struct tty *tty, const struct tty_ctx *ctx)
                   2098: {
1.309     nicm     2099:        tty_margin(tty, ctx->xoff - ctx->ox,
                   2100:            ctx->xoff + ctx->wp->sx - 1 - ctx->ox);
1.212     nicm     2101: }
                   2102:
                   2103: /* Set margin at absolute position. */
1.214     nicm     2104: static void
1.212     nicm     2105: tty_margin(struct tty *tty, u_int rleft, u_int rright)
                   2106: {
                   2107:        if (!tty_use_margin(tty))
                   2108:                return;
                   2109:        if (tty->rleft == rleft && tty->rright == rright)
                   2110:                return;
                   2111:
1.232     nicm     2112:        tty_putcode2(tty, TTYC_CSR, tty->rupper, tty->rlower);
1.231     nicm     2113:
1.212     nicm     2114:        tty->rleft = rleft;
                   2115:        tty->rright = rright;
                   2116:
1.232     nicm     2117:        if (rleft == 0 && rright == tty->sx - 1)
1.365     nicm     2118:                tty_putcode(tty, TTYC_CLMG);
1.232     nicm     2119:        else
1.365     nicm     2120:                tty_putcode2(tty, TTYC_CMG, rleft, rright);
1.249     nicm     2121:        tty->cx = tty->cy = UINT_MAX;
1.253     nicm     2122: }
                   2123:
                   2124: /*
                   2125:  * Move the cursor, unless it would wrap itself when the next character is
                   2126:  * printed.
                   2127:  */
                   2128: static void
                   2129: tty_cursor_pane_unless_wrap(struct tty *tty, const struct tty_ctx *ctx,
                   2130:     u_int cx, u_int cy)
                   2131: {
1.268     nicm     2132:        if (!ctx->wrapped ||
                   2133:            !tty_pane_full_width(tty, ctx) ||
1.359     nicm     2134:            (tty->term->flags & TERM_NOXENL) ||
1.253     nicm     2135:            ctx->xoff + cx != 0 ||
                   2136:            ctx->yoff + cy != tty->cy + 1 ||
1.254     nicm     2137:            tty->cx < tty->sx ||
                   2138:            tty->cy == tty->rlower)
1.253     nicm     2139:                tty_cursor_pane(tty, ctx, cx, cy);
                   2140:        else
                   2141:                log_debug("%s: will wrap at %u,%u", __func__, tty->cx, tty->cy);
1.1       nicm     2142: }
                   2143:
1.42      nicm     2144: /* Move cursor inside pane. */
1.208     nicm     2145: static void
1.41      nicm     2146: tty_cursor_pane(struct tty *tty, const struct tty_ctx *ctx, u_int cx, u_int cy)
                   2147: {
1.309     nicm     2148:        tty_cursor(tty, ctx->xoff + cx - ctx->ox, ctx->yoff + cy - ctx->oy);
1.41      nicm     2149: }
                   2150:
1.42      nicm     2151: /* Move cursor to absolute position. */
1.41      nicm     2152: void
                   2153: tty_cursor(struct tty *tty, u_int cx, u_int cy)
1.1       nicm     2154: {
1.42      nicm     2155:        struct tty_term *term = tty->term;
                   2156:        u_int            thisx, thisy;
                   2157:        int              change;
1.354     nicm     2158:
                   2159:        if (tty->flags & TTY_BLOCK)
                   2160:                return;
1.77      nicm     2161:
1.42      nicm     2162:        if (cx > tty->sx - 1)
                   2163:                cx = tty->sx - 1;
                   2164:
                   2165:        thisx = tty->cx;
                   2166:        thisy = tty->cy;
                   2167:
                   2168:        /* No change. */
                   2169:        if (cx == thisx && cy == thisy)
                   2170:                return;
                   2171:
1.43      nicm     2172:        /* Very end of the line, just use absolute movement. */
                   2173:        if (thisx > tty->sx - 1)
                   2174:                goto absolute;
                   2175:
1.42      nicm     2176:        /* Move to home position (0, 0). */
                   2177:        if (cx == 0 && cy == 0 && tty_term_has(term, TTYC_HOME)) {
                   2178:                tty_putcode(tty, TTYC_HOME);
                   2179:                goto out;
                   2180:        }
                   2181:
                   2182:        /* Zero on the next line. */
1.293     nicm     2183:        if (cx == 0 && cy == thisy + 1 && thisy != tty->rlower &&
                   2184:            (!tty_use_margin(tty) || tty->rleft == 0)) {
1.1       nicm     2185:                tty_putc(tty, '\r');
1.42      nicm     2186:                tty_putc(tty, '\n');
                   2187:                goto out;
                   2188:        }
                   2189:
1.45      nicm     2190:        /* Moving column or row. */
1.42      nicm     2191:        if (cy == thisy) {
1.45      nicm     2192:                /*
                   2193:                 * Moving column only, row staying the same.
                   2194:                 */
                   2195:
1.42      nicm     2196:                /* To left edge. */
1.294     nicm     2197:                if (cx == 0 && (!tty_use_margin(tty) || tty->rleft == 0)) {
1.42      nicm     2198:                        tty_putc(tty, '\r');
                   2199:                        goto out;
                   2200:                }
                   2201:
                   2202:                /* One to the left. */
                   2203:                if (cx == thisx - 1 && tty_term_has(term, TTYC_CUB1)) {
                   2204:                        tty_putcode(tty, TTYC_CUB1);
                   2205:                        goto out;
                   2206:                }
                   2207:
                   2208:                /* One to the right. */
                   2209:                if (cx == thisx + 1 && tty_term_has(term, TTYC_CUF1)) {
                   2210:                        tty_putcode(tty, TTYC_CUF1);
                   2211:                        goto out;
                   2212:                }
                   2213:
                   2214:                /* Calculate difference. */
                   2215:                change = thisx - cx;    /* +ve left, -ve right */
                   2216:
                   2217:                /*
                   2218:                 * Use HPA if change is larger than absolute, otherwise move
                   2219:                 * the cursor with CUB/CUF.
                   2220:                 */
1.87      nicm     2221:                if ((u_int) abs(change) > cx && tty_term_has(term, TTYC_HPA)) {
1.42      nicm     2222:                        tty_putcode1(tty, TTYC_HPA, cx);
                   2223:                        goto out;
1.333     nicm     2224:                } else if (change > 0 &&
                   2225:                    tty_term_has(term, TTYC_CUB) &&
                   2226:                    !tty_use_margin(tty)) {
1.202     nicm     2227:                        if (change == 2 && tty_term_has(term, TTYC_CUB1)) {
                   2228:                                tty_putcode(tty, TTYC_CUB1);
                   2229:                                tty_putcode(tty, TTYC_CUB1);
                   2230:                                goto out;
                   2231:                        }
1.42      nicm     2232:                        tty_putcode1(tty, TTYC_CUB, change);
                   2233:                        goto out;
1.333     nicm     2234:                } else if (change < 0 &&
                   2235:                    tty_term_has(term, TTYC_CUF) &&
                   2236:                    !tty_use_margin(tty)) {
1.42      nicm     2237:                        tty_putcode1(tty, TTYC_CUF, -change);
                   2238:                        goto out;
                   2239:                }
1.45      nicm     2240:        } else if (cx == thisx) {
                   2241:                /*
                   2242:                 * Moving row only, column staying the same.
                   2243:                 */
1.42      nicm     2244:
                   2245:                /* One above. */
1.77      nicm     2246:                if (thisy != tty->rupper &&
1.42      nicm     2247:                    cy == thisy - 1 && tty_term_has(term, TTYC_CUU1)) {
                   2248:                        tty_putcode(tty, TTYC_CUU1);
                   2249:                        goto out;
                   2250:                }
                   2251:
                   2252:                /* One below. */
1.49      nicm     2253:                if (thisy != tty->rlower &&
1.42      nicm     2254:                    cy == thisy + 1 && tty_term_has(term, TTYC_CUD1)) {
                   2255:                        tty_putcode(tty, TTYC_CUD1);
                   2256:                        goto out;
                   2257:                }
                   2258:
                   2259:                /* Calculate difference. */
                   2260:                change = thisy - cy;    /* +ve up, -ve down */
                   2261:
                   2262:                /*
1.77      nicm     2263:                 * Try to use VPA if change is larger than absolute or if this
                   2264:                 * change would cross the scroll region, otherwise use CUU/CUD.
1.42      nicm     2265:                 */
1.87      nicm     2266:                if ((u_int) abs(change) > cy ||
1.42      nicm     2267:                    (change < 0 && cy - change > tty->rlower) ||
1.44      nicm     2268:                    (change > 0 && cy - change < tty->rupper)) {
                   2269:                            if (tty_term_has(term, TTYC_VPA)) {
                   2270:                                    tty_putcode1(tty, TTYC_VPA, cy);
                   2271:                                    goto out;
                   2272:                            }
1.42      nicm     2273:                } else if (change > 0 && tty_term_has(term, TTYC_CUU)) {
                   2274:                        tty_putcode1(tty, TTYC_CUU, change);
                   2275:                        goto out;
                   2276:                } else if (change < 0 && tty_term_has(term, TTYC_CUD)) {
                   2277:                        tty_putcode1(tty, TTYC_CUD, -change);
                   2278:                        goto out;
                   2279:                }
                   2280:        }
                   2281:
1.43      nicm     2282: absolute:
1.42      nicm     2283:        /* Absolute movement. */
                   2284:        tty_putcode2(tty, TTYC_CUP, cy, cx);
                   2285:
                   2286: out:
                   2287:        tty->cx = cx;
                   2288:        tty->cy = cy;
1.1       nicm     2289: }
                   2290:
                   2291: void
1.176     nicm     2292: tty_attributes(struct tty *tty, const struct grid_cell *gc,
1.317     nicm     2293:     struct window_pane *wp)
1.1       nicm     2294: {
1.63      nicm     2295:        struct grid_cell        *tc = &tty->cell, gc2;
1.255     nicm     2296:        int                      changed;
1.61      nicm     2297:
1.228     nicm     2298:        /* Ignore cell if it is the same as the last one. */
                   2299:        if (wp != NULL &&
                   2300:            (int)wp->id == tty->last_wp &&
1.326     nicm     2301:            ~(wp->flags & PANE_STYLECHANGED) &&
1.228     nicm     2302:            gc->attr == tty->last_cell.attr &&
                   2303:            gc->fg == tty->last_cell.fg &&
1.328     nicm     2304:            gc->bg == tty->last_cell.bg &&
                   2305:            gc->us == tty->last_cell.us)
1.228     nicm     2306:                return;
                   2307:        tty->last_wp = (wp != NULL ? (int)wp->id : -1);
                   2308:        memcpy(&tty->last_cell, gc, sizeof tty->last_cell);
                   2309:
                   2310:        /* Copy cell and update default colours. */
1.85      nicm     2311:        memcpy(&gc2, gc, sizeof gc2);
1.203     nicm     2312:        if (wp != NULL)
                   2313:                tty_default_colours(&gc2, wp);
1.63      nicm     2314:
1.18      nicm     2315:        /*
                   2316:         * If no setab, try to use the reverse attribute as a best-effort for a
                   2317:         * non-default background. This is a bit of a hack but it doesn't do
                   2318:         * any serious harm and makes a couple of applications happier.
                   2319:         */
                   2320:        if (!tty_term_has(tty->term, TTYC_SETAB)) {
1.85      nicm     2321:                if (gc2.attr & GRID_ATTR_REVERSE) {
1.310     nicm     2322:                        if (gc2.fg != 7 && !COLOUR_DEFAULT(gc2.fg))
1.64      nicm     2323:                                gc2.attr &= ~GRID_ATTR_REVERSE;
1.18      nicm     2324:                } else {
1.310     nicm     2325:                        if (gc2.bg != 0 && !COLOUR_DEFAULT(gc2.bg))
1.64      nicm     2326:                                gc2.attr |= GRID_ATTR_REVERSE;
1.18      nicm     2327:                }
                   2328:        }
1.1       nicm     2329:
1.85      nicm     2330:        /* Fix up the colours if necessary. */
1.219     nicm     2331:        tty_check_fg(tty, wp, &gc2);
                   2332:        tty_check_bg(tty, wp, &gc2);
1.328     nicm     2333:        tty_check_us(tty, wp, &gc2);
1.85      nicm     2334:
1.328     nicm     2335:        /*
                   2336:         * If any bits are being cleared or the underline colour is now default,
                   2337:         * reset everything.
                   2338:         */
                   2339:        if ((tc->attr & ~gc2.attr) || (tc->us != gc2.us && gc2.us == 0))
1.64      nicm     2340:                tty_reset(tty);
                   2341:
                   2342:        /*
                   2343:         * Set the colours. This may call tty_reset() (so it comes next) and
1.328     nicm     2344:         * may add to (NOT remove) the desired attributes.
1.64      nicm     2345:         */
1.85      nicm     2346:        tty_colours(tty, &gc2);
1.64      nicm     2347:
1.1       nicm     2348:        /* Filter out attribute bits already set. */
1.85      nicm     2349:        changed = gc2.attr & ~tc->attr;
                   2350:        tc->attr = gc2.attr;
1.1       nicm     2351:
                   2352:        /* Set the attributes. */
                   2353:        if (changed & GRID_ATTR_BRIGHT)
                   2354:                tty_putcode(tty, TTYC_BOLD);
                   2355:        if (changed & GRID_ATTR_DIM)
                   2356:                tty_putcode(tty, TTYC_DIM);
1.180     nicm     2357:        if (changed & GRID_ATTR_ITALICS)
                   2358:                tty_set_italics(tty);
1.308     nicm     2359:        if (changed & GRID_ATTR_ALL_UNDERSCORE) {
                   2360:                if ((changed & GRID_ATTR_UNDERSCORE) ||
                   2361:                    !tty_term_has(tty->term, TTYC_SMULX))
                   2362:                        tty_putcode(tty, TTYC_SMUL);
                   2363:                else if (changed & GRID_ATTR_UNDERSCORE_2)
                   2364:                        tty_putcode1(tty, TTYC_SMULX, 2);
                   2365:                else if (changed & GRID_ATTR_UNDERSCORE_3)
                   2366:                        tty_putcode1(tty, TTYC_SMULX, 3);
                   2367:                else if (changed & GRID_ATTR_UNDERSCORE_4)
                   2368:                        tty_putcode1(tty, TTYC_SMULX, 4);
                   2369:                else if (changed & GRID_ATTR_UNDERSCORE_5)
                   2370:                        tty_putcode1(tty, TTYC_SMULX, 5);
                   2371:        }
1.1       nicm     2372:        if (changed & GRID_ATTR_BLINK)
                   2373:                tty_putcode(tty, TTYC_BLINK);
                   2374:        if (changed & GRID_ATTR_REVERSE) {
                   2375:                if (tty_term_has(tty->term, TTYC_REV))
                   2376:                        tty_putcode(tty, TTYC_REV);
                   2377:                else if (tty_term_has(tty->term, TTYC_SMSO))
                   2378:                        tty_putcode(tty, TTYC_SMSO);
                   2379:        }
                   2380:        if (changed & GRID_ATTR_HIDDEN)
                   2381:                tty_putcode(tty, TTYC_INVIS);
1.255     nicm     2382:        if (changed & GRID_ATTR_STRIKETHROUGH)
                   2383:                tty_putcode(tty, TTYC_SMXX);
1.324     nicm     2384:        if (changed & GRID_ATTR_OVERLINE)
                   2385:                tty_putcode(tty, TTYC_SMOL);
1.285     nicm     2386:        if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
1.1       nicm     2387:                tty_putcode(tty, TTYC_SMACS);
                   2388: }
                   2389:
1.207     nicm     2390: static void
1.85      nicm     2391: tty_colours(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     2392: {
1.61      nicm     2393:        struct grid_cell        *tc = &tty->cell;
1.204     nicm     2394:        int                      have_ax;
1.61      nicm     2395:
                   2396:        /* No changes? Nothing is necessary. */
1.328     nicm     2397:        if (gc->fg == tc->fg && gc->bg == tc->bg && gc->us == tc->us)
1.63      nicm     2398:                return;
1.1       nicm     2399:
1.61      nicm     2400:        /*
                   2401:         * Is either the default colour? This is handled specially because the
                   2402:         * best solution might be to reset both colours to default, in which
                   2403:         * case if only one is default need to fall onward to set the other
                   2404:         * colour.
                   2405:         */
1.310     nicm     2406:        if (COLOUR_DEFAULT(gc->fg) || COLOUR_DEFAULT(gc->bg)) {
1.61      nicm     2407:                /*
                   2408:                 * If don't have AX but do have op, send sgr0 (op can't
                   2409:                 * actually be used because it is sometimes the same as sgr0
                   2410:                 * and sometimes isn't). This resets both colours to default.
                   2411:                 *
                   2412:                 * Otherwise, try to set the default colour only as needed.
                   2413:                 */
1.174     nicm     2414:                have_ax = tty_term_flag(tty->term, TTYC_AX);
1.61      nicm     2415:                if (!have_ax && tty_term_has(tty->term, TTYC_OP))
                   2416:                        tty_reset(tty);
                   2417:                else {
1.310     nicm     2418:                        if (COLOUR_DEFAULT(gc->fg) && !COLOUR_DEFAULT(tc->fg)) {
1.61      nicm     2419:                                if (have_ax)
                   2420:                                        tty_puts(tty, "\033[39m");
1.204     nicm     2421:                                else if (tc->fg != 7)
1.61      nicm     2422:                                        tty_putcode1(tty, TTYC_SETAF, 7);
1.310     nicm     2423:                                tc->fg = gc->fg;
1.61      nicm     2424:                        }
1.310     nicm     2425:                        if (COLOUR_DEFAULT(gc->bg) && !COLOUR_DEFAULT(tc->bg)) {
1.77      nicm     2426:                                if (have_ax)
1.61      nicm     2427:                                        tty_puts(tty, "\033[49m");
1.204     nicm     2428:                                else if (tc->bg != 0)
1.61      nicm     2429:                                        tty_putcode1(tty, TTYC_SETAB, 0);
1.312     nicm     2430:                                tc->bg = gc->bg;
1.61      nicm     2431:                        }
                   2432:                }
                   2433:        }
1.1       nicm     2434:
1.61      nicm     2435:        /* Set the foreground colour. */
1.310     nicm     2436:        if (!COLOUR_DEFAULT(gc->fg) && gc->fg != tc->fg)
1.85      nicm     2437:                tty_colours_fg(tty, gc);
1.1       nicm     2438:
1.61      nicm     2439:        /*
                   2440:         * Set the background colour. This must come after the foreground as
                   2441:         * tty_colour_fg() can call tty_reset().
                   2442:         */
1.310     nicm     2443:        if (!COLOUR_DEFAULT(gc->bg) && gc->bg != tc->bg)
1.73      nicm     2444:                tty_colours_bg(tty, gc);
1.328     nicm     2445:
                   2446:        /* Set the underscore color. */
                   2447:        if (gc->us != tc->us)
                   2448:                tty_colours_us(tty, gc);
1.1       nicm     2449: }
                   2450:
1.219     nicm     2451: static void
1.317     nicm     2452: tty_check_fg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
1.85      nicm     2453: {
1.204     nicm     2454:        u_char  r, g, b;
                   2455:        u_int   colours;
1.223     nicm     2456:        int     c;
1.85      nicm     2457:
1.288     nicm     2458:        /*
                   2459:         * Perform substitution if this pane has a palette. If the bright
                   2460:         * attribute is set, use the bright entry in the palette by changing to
                   2461:         * the aixterm colour.
                   2462:         */
                   2463:        if (~gc->flags & GRID_FLAG_NOPALETTE) {
                   2464:                c = gc->fg;
1.289     nicm     2465:                if (c < 8 && gc->attr & GRID_ATTR_BRIGHT)
1.288     nicm     2466:                        c += 90;
                   2467:                if ((c = window_pane_get_palette(wp, c)) != -1)
                   2468:                        gc->fg = c;
                   2469:        }
1.219     nicm     2470:
1.199     nicm     2471:        /* Is this a 24-bit colour? */
1.204     nicm     2472:        if (gc->fg & COLOUR_FLAG_RGB) {
1.199     nicm     2473:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
1.359     nicm     2474:                if (tty->term->flags & TERM_RGBCOLOURS)
1.200     nicm     2475:                        return;
1.341     nicm     2476:                colour_split_rgb(gc->fg, &r, &g, &b);
                   2477:                gc->fg = colour_find_rgb(r, g, b);
1.199     nicm     2478:        }
1.224     nicm     2479:
                   2480:        /* How many colours does this terminal have? */
1.359     nicm     2481:        if (tty->term->flags & TERM_256COLOURS)
1.224     nicm     2482:                colours = 256;
                   2483:        else
                   2484:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     2485:
1.85      nicm     2486:        /* Is this a 256-colour colour? */
1.204     nicm     2487:        if (gc->fg & COLOUR_FLAG_256) {
1.85      nicm     2488:                /* And not a 256 colour mode? */
1.224     nicm     2489:                if (colours != 256) {
1.85      nicm     2490:                        gc->fg = colour_256to16(gc->fg);
                   2491:                        if (gc->fg & 8) {
                   2492:                                gc->fg &= 7;
1.175     nicm     2493:                                if (colours >= 16)
                   2494:                                        gc->fg += 90;
1.332     nicm     2495:                        }
1.85      nicm     2496:                }
                   2497:                return;
                   2498:        }
                   2499:
                   2500:        /* Is this an aixterm colour? */
                   2501:        if (gc->fg >= 90 && gc->fg <= 97 && colours < 16) {
                   2502:                gc->fg -= 90;
                   2503:                gc->attr |= GRID_ATTR_BRIGHT;
                   2504:        }
                   2505: }
                   2506:
1.219     nicm     2507: static void
1.317     nicm     2508: tty_check_bg(struct tty *tty, struct window_pane *wp, struct grid_cell *gc)
1.85      nicm     2509: {
1.204     nicm     2510:        u_char  r, g, b;
                   2511:        u_int   colours;
1.223     nicm     2512:        int     c;
1.85      nicm     2513:
1.288     nicm     2514:        /* Perform substitution if this pane has a palette. */
                   2515:        if (~gc->flags & GRID_FLAG_NOPALETTE) {
                   2516:                if ((c = window_pane_get_palette(wp, gc->bg)) != -1)
                   2517:                        gc->bg = c;
                   2518:        }
1.219     nicm     2519:
1.199     nicm     2520:        /* Is this a 24-bit colour? */
1.204     nicm     2521:        if (gc->bg & COLOUR_FLAG_RGB) {
1.199     nicm     2522:                /* Not a 24-bit terminal? Translate to 256-colour palette. */
1.359     nicm     2523:                if (tty->term->flags & TERM_RGBCOLOURS)
1.200     nicm     2524:                        return;
1.341     nicm     2525:                colour_split_rgb(gc->bg, &r, &g, &b);
                   2526:                gc->bg = colour_find_rgb(r, g, b);
1.199     nicm     2527:        }
1.224     nicm     2528:
                   2529:        /* How many colours does this terminal have? */
1.359     nicm     2530:        if (tty->term->flags & TERM_256COLOURS)
1.224     nicm     2531:                colours = 256;
                   2532:        else
                   2533:                colours = tty_term_number(tty->term, TTYC_COLORS);
1.175     nicm     2534:
1.85      nicm     2535:        /* Is this a 256-colour colour? */
1.204     nicm     2536:        if (gc->bg & COLOUR_FLAG_256) {
1.85      nicm     2537:                /*
                   2538:                 * And not a 256 colour mode? Translate to 16-colour
                   2539:                 * palette. Bold background doesn't exist portably, so just
                   2540:                 * discard the bold bit if set.
                   2541:                 */
1.224     nicm     2542:                if (colours != 256) {
1.85      nicm     2543:                        gc->bg = colour_256to16(gc->bg);
1.175     nicm     2544:                        if (gc->bg & 8) {
1.85      nicm     2545:                                gc->bg &= 7;
1.175     nicm     2546:                                if (colours >= 16)
1.322     nicm     2547:                                        gc->bg += 90;
1.175     nicm     2548:                        }
1.85      nicm     2549:                }
                   2550:                return;
                   2551:        }
                   2552:
                   2553:        /* Is this an aixterm colour? */
1.175     nicm     2554:        if (gc->bg >= 90 && gc->bg <= 97 && colours < 16)
1.85      nicm     2555:                gc->bg -= 90;
                   2556: }
                   2557:
1.207     nicm     2558: static void
1.335     nicm     2559: tty_check_us(__unused struct tty *tty, struct window_pane *wp,
                   2560:     struct grid_cell *gc)
1.328     nicm     2561: {
                   2562:        int     c;
                   2563:
                   2564:        /* Perform substitution if this pane has a palette. */
                   2565:        if (~gc->flags & GRID_FLAG_NOPALETTE) {
                   2566:                if ((c = window_pane_get_palette(wp, gc->us)) != -1)
                   2567:                        gc->us = c;
                   2568:        }
                   2569:
                   2570:        /* Underscore colour is set as RGB so convert a 256 colour to RGB. */
                   2571:        if (gc->us & COLOUR_FLAG_256)
                   2572:                gc->us = colour_256toRGB (gc->us);
                   2573: }
                   2574:
                   2575: static void
1.85      nicm     2576: tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     2577: {
1.61      nicm     2578:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     2579:        char                     s[32];
1.1       nicm     2580:
1.204     nicm     2581:        /* Is this a 24-bit or 256-colour colour? */
1.302     nicm     2582:        if (gc->fg & COLOUR_FLAG_RGB || gc->fg & COLOUR_FLAG_256) {
1.204     nicm     2583:                if (tty_try_colour(tty, gc->fg, "38") == 0)
1.61      nicm     2584:                        goto save_fg;
1.199     nicm     2585:                /* Should not get here, already converted in tty_check_fg. */
1.85      nicm     2586:                return;
1.1       nicm     2587:        }
                   2588:
1.79      nicm     2589:        /* Is this an aixterm bright colour? */
1.204     nicm     2590:        if (gc->fg >= 90 && gc->fg <= 97) {
1.359     nicm     2591:                if (tty->term->flags & TERM_256COLOURS) {
1.323     nicm     2592:                        xsnprintf(s, sizeof s, "\033[%dm", gc->fg);
                   2593:                        tty_puts(tty, s);
                   2594:                } else
                   2595:                        tty_putcode1(tty, TTYC_SETAF, gc->fg - 90 + 8);
1.85      nicm     2596:                goto save_fg;
1.79      nicm     2597:        }
                   2598:
1.61      nicm     2599:        /* Otherwise set the foreground colour. */
1.204     nicm     2600:        tty_putcode1(tty, TTYC_SETAF, gc->fg);
1.61      nicm     2601:
1.77      nicm     2602: save_fg:
1.61      nicm     2603:        /* Save the new values in the terminal current cell. */
1.204     nicm     2604:        tc->fg = gc->fg;
1.1       nicm     2605: }
                   2606:
1.207     nicm     2607: static void
1.73      nicm     2608: tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
1.1       nicm     2609: {
1.61      nicm     2610:        struct grid_cell        *tc = &tty->cell;
1.79      nicm     2611:        char                     s[32];
1.1       nicm     2612:
1.204     nicm     2613:        /* Is this a 24-bit or 256-colour colour? */
1.302     nicm     2614:        if (gc->bg & COLOUR_FLAG_RGB || gc->bg & COLOUR_FLAG_256) {
1.204     nicm     2615:                if (tty_try_colour(tty, gc->bg, "48") == 0)
1.61      nicm     2616:                        goto save_bg;
1.199     nicm     2617:                /* Should not get here, already converted in tty_check_bg. */
1.85      nicm     2618:                return;
1.79      nicm     2619:        }
                   2620:
                   2621:        /* Is this an aixterm bright colour? */
1.204     nicm     2622:        if (gc->bg >= 90 && gc->bg <= 97) {
1.359     nicm     2623:                if (tty->term->flags & TERM_256COLOURS) {
1.323     nicm     2624:                        xsnprintf(s, sizeof s, "\033[%dm", gc->bg + 10);
                   2625:                        tty_puts(tty, s);
                   2626:                } else
                   2627:                        tty_putcode1(tty, TTYC_SETAB, gc->bg - 90 + 8);
1.175     nicm     2628:                goto save_bg;
1.1       nicm     2629:        }
                   2630:
1.61      nicm     2631:        /* Otherwise set the background colour. */
1.204     nicm     2632:        tty_putcode1(tty, TTYC_SETAB, gc->bg);
1.61      nicm     2633:
                   2634: save_bg:
                   2635:        /* Save the new values in the terminal current cell. */
1.204     nicm     2636:        tc->bg = gc->bg;
1.328     nicm     2637: }
                   2638:
                   2639: static void
                   2640: tty_colours_us(struct tty *tty, const struct grid_cell *gc)
                   2641: {
                   2642:        struct grid_cell        *tc = &tty->cell;
                   2643:        u_int                    c;
                   2644:        u_char                   r, g, b;
                   2645:
                   2646:        /* Must be an RGB colour - this should never happen. */
                   2647:        if (~gc->us & COLOUR_FLAG_RGB)
                   2648:                return;
                   2649:
                   2650:        /*
                   2651:         * Setulc follows the ncurses(3) one argument "direct colour"
                   2652:         * capability format. Calculate the colour value.
                   2653:         */
                   2654:        colour_split_rgb(gc->us, &r, &g, &b);
                   2655:        c = (65536 * r) + (256 * g) + b;
                   2656:
                   2657:        /* Write the colour. */
                   2658:        tty_putcode1(tty, TTYC_SETULC, c);
                   2659:
                   2660:        /* Save the new values in the terminal current cell. */
                   2661:        tc->us = gc->us;
1.61      nicm     2662: }
                   2663:
1.207     nicm     2664: static int
1.204     nicm     2665: tty_try_colour(struct tty *tty, int colour, const char *type)
1.61      nicm     2666: {
1.204     nicm     2667:        u_char  r, g, b;
1.61      nicm     2668:
1.204     nicm     2669:        if (colour & COLOUR_FLAG_256) {
1.359     nicm     2670:                if (*type == '3' && tty_term_has(tty->term, TTYC_SETAF))
                   2671:                        tty_putcode1(tty, TTYC_SETAF, colour & 0xff);
                   2672:                else if (tty_term_has(tty->term, TTYC_SETAB))
                   2673:                        tty_putcode1(tty, TTYC_SETAB, colour & 0xff);
                   2674:                return (0);
1.204     nicm     2675:        }
                   2676:
                   2677:        if (colour & COLOUR_FLAG_RGB) {
1.341     nicm     2678:                colour_split_rgb(colour & 0xffffff, &r, &g, &b);
1.359     nicm     2679:                if (*type == '3' && tty_term_has(tty->term, TTYC_SETRGBF))
1.286     nicm     2680:                        tty_putcode3(tty, TTYC_SETRGBF, r, g, b);
1.359     nicm     2681:                else if (tty_term_has(tty->term, TTYC_SETRGBB))
1.286     nicm     2682:                        tty_putcode3(tty, TTYC_SETRGBB, r, g, b);
1.165     nicm     2683:                return (0);
                   2684:        }
1.61      nicm     2685:
1.165     nicm     2686:        return (-1);
1.176     nicm     2687: }
                   2688:
1.207     nicm     2689: static void
1.317     nicm     2690: tty_default_colours(struct grid_cell *gc, struct window_pane *wp)
1.176     nicm     2691: {
1.326     nicm     2692:        struct options  *oo = wp->options;
                   2693:        struct style    *style, *active_style;
                   2694:        int              c;
                   2695:
                   2696:        if (wp->flags & PANE_STYLECHANGED) {
                   2697:                wp->flags &= ~PANE_STYLECHANGED;
                   2698:
                   2699:                active_style = options_get_style(oo, "window-active-style");
                   2700:                style = options_get_style(oo, "window-style");
                   2701:
                   2702:                style_copy(&wp->cached_active_style, active_style);
                   2703:                style_copy(&wp->cached_style, style);
1.203     nicm     2704:        } else {
1.326     nicm     2705:                active_style = &wp->cached_active_style;
                   2706:                style = &wp->cached_style;
1.203     nicm     2707:        }
1.176     nicm     2708:
1.204     nicm     2709:        if (gc->fg == 8) {
1.326     nicm     2710:                if (wp == wp->window->active && active_style->gc.fg != 8)
                   2711:                        gc->fg = active_style->gc.fg;
1.204     nicm     2712:                else
1.326     nicm     2713:                        gc->fg = style->gc.fg;
1.219     nicm     2714:
1.310     nicm     2715:                if (gc->fg != 8) {
                   2716:                        c = window_pane_get_palette(wp, gc->fg);
                   2717:                        if (c != -1)
                   2718:                                gc->fg = c;
                   2719:                }
1.176     nicm     2720:        }
                   2721:
1.204     nicm     2722:        if (gc->bg == 8) {
1.326     nicm     2723:                if (wp == wp->window->active && active_style->gc.bg != 8)
                   2724:                        gc->bg = active_style->gc.bg;
1.204     nicm     2725:                else
1.326     nicm     2726:                        gc->bg = style->gc.bg;
1.219     nicm     2727:
1.310     nicm     2728:                if (gc->bg != 8) {
                   2729:                        c = window_pane_get_palette(wp, gc->bg);
                   2730:                        if (c != -1)
                   2731:                                gc->bg = c;
                   2732:                }
1.176     nicm     2733:        }
1.210     nicm     2734: }
                   2735:
                   2736: static void
1.317     nicm     2737: tty_default_attributes(struct tty *tty, struct window_pane *wp, u_int bg)
1.210     nicm     2738: {
                   2739:        static struct grid_cell gc;
                   2740:
                   2741:        memcpy(&gc, &grid_default_cell, sizeof gc);
                   2742:        gc.bg = bg;
                   2743:        tty_attributes(tty, &gc, wp);
1.1       nicm     2744: }