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/* $Id: status.c,v 1.27 2008-06-18 16:34:07 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include "tmux.h"
size_t status_width(struct winlink *);
char *status_print(struct session *, struct winlink *, u_char *);
/* Draw status for client on the last lines of given context. */
void
status_redraw(struct client *c)
{
struct screen_redraw_ctx ctx;
struct session *s = c->session;
struct winlink *wl;
char *left, *right, *text, *ptr;
char lbuf[BUFSIZ], rbuf[BUFSIZ];
size_t llen, rlen, offset, xx, yy;
size_t size, start, width;
u_char attr, colr;
yy = options_get_number(&s->options, "status-lines");
if (c->sy == 0 || yy == 0)
return;
if (clock_gettime(CLOCK_REALTIME, &c->status_ts) != 0)
fatal("clock_gettime failed");
colr = options_get_colours(&s->options, "status-colour");
yy = c->sy - yy;
if (yy == 0)
goto blank;
left = options_get_string(&s->options, "status-left");
strftime(lbuf, sizeof lbuf, left, localtime(&(c->status_ts.tv_sec)));
llen = strlen(lbuf);
right = options_get_string(&s->options, "status-right");
strftime(rbuf, sizeof rbuf, right, localtime(&(c->status_ts.tv_sec)));
rlen = strlen(rbuf);
/*
* Figure out how much space we have for the window list. If there isn't
* enough space, just wimp out.
*/
xx = 0;
if (llen != 0)
xx += llen + 1;
if (rlen != 0)
xx += rlen + 1;
if (c->sx == 0 || c->sx <= xx)
goto blank;
xx = c->sx - xx;
/*
* Right. We have xx characters to fill. Find out how much is to go in
* them and the offset of the current window (it must be on screen).
*/
width = offset = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
size = status_width(wl) + 1;
if (wl == s->curw)
offset = width;
width += size;
}
start = 0;
/* If there is enough space for the total width, all is gravy. */
if (width <= xx)
goto draw;
/* Find size of current window text. */
size = status_width(s->curw);
/*
* If the offset is already on screen, we're good to draw from the
* start and just leave off the end.
*/
if (offset + size < xx) {
width = xx - 1;
goto draw;
}
/*
* Work out how many characters we need to omit from the start. There
* are xx characters to fill, and offset + size must be the last. So,
* the start character is offset + size - xx.
*/
start = offset + size - xx;
width = xx - 1;
draw:
/* Begin drawing and move to the starting position. */
screen_redraw_start_client(&ctx, c);
screen_redraw_set_attributes(&ctx, 0, colr);
if (llen != 0) {
screen_redraw_move_cursor(&ctx, 0, yy);
screen_redraw_write_string(&ctx, "%s ", lbuf);
} else
screen_redraw_move_cursor(&ctx, 0, yy);
/* Draw each character in succession. */
offset = 0;
RB_FOREACH(wl, winlinks, &s->windows) {
text = status_print(s, wl, &attr);
screen_redraw_set_attributes(&ctx, attr, colr);
for (ptr = text; *ptr != '\0'; ptr++) {
if (offset >= start && offset <= start + width)
ctx.write(ctx.data, TTY_CHARACTER, *ptr);
offset++;
}
xfree(text);
if (offset <= start + width) {
if (offset >= start) {
screen_redraw_set_attributes(&ctx, 0, colr);
ctx.write(ctx.data, TTY_CHARACTER, ' ');
}
offset++;
}
if (offset >= start + width)
break;
}
/* Fill the remaining space if any. */
screen_redraw_set_attributes(&ctx, 0, colr);
while (offset++ < xx)
ctx.write(ctx.data, TTY_CHARACTER, ' ');
if (rlen > 0)
screen_redraw_write_string(&ctx, " %s", rbuf);
screen_redraw_stop(&ctx);
return;
blank:
/* Just draw the whole line as blank. */
screen_redraw_start_client(&ctx, c);
screen_redraw_set_attributes(&ctx, 0, colr);
screen_redraw_move_cursor(&ctx, 0, yy);
for (offset = 0; offset < c->sx; offset++)
ctx.write(ctx.data, TTY_CHARACTER, ' ');
screen_redraw_stop(&ctx);
}
size_t
status_width(struct winlink *wl)
{
return (xsnprintf(NULL, 0, "%d:%s ", wl->idx, wl->window->name));
}
char *
status_print(struct session *s, struct winlink *wl, u_char *attr)
{
char *text, flag;
flag = ' ';
if (wl == s->lastw)
flag = '-';
if (wl == s->curw)
flag = '*';
*attr = 0;
if (session_alert_has(s, wl, WINDOW_ACTIVITY)) {
flag = '#';
*attr = ATTR_REVERSE;
}
if (session_alert_has(s, wl, WINDOW_BELL)) {
flag = '!';
*attr = ATTR_REVERSE;
}
xasprintf(&text, "%d:%s%c", wl->idx, wl->window->name, flag);
return (text);
}
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