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455 lines
11 KiB
C
455 lines
11 KiB
C
/* $Id: status.c,v 1.36 2008-06-19 22:51:27 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdarg.h>
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#include <string.h>
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#include <time.h>
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#include "tmux.h"
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size_t status_width(struct winlink *);
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char *status_print(struct session *, struct winlink *, u_char *);
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/* Draw status for client on the last lines of given context. */
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void
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status_redraw(struct client *c)
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{
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struct screen_redraw_ctx ctx;
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struct session *s = c->session;
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struct winlink *wl;
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char *left, *right, *text, *ptr;
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char lbuf[BUFSIZ], rbuf[BUFSIZ];
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size_t llen, rlen, offset, xx, yy;
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size_t size, start, width;
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u_char attr, colr;
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struct tm *tm;
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int larrow, rarrow;
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if (c->sy == 0 || !options_get_number(&s->options, "status"))
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goto off;
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larrow = rarrow = 0;
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if (clock_gettime(CLOCK_REALTIME, &c->status_timer) != 0)
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fatal("clock_gettime failed");
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colr = options_get_colours(&s->options, "status-colour");
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yy = c->sy - 1;
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if (yy == 0)
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goto blank;
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tm = localtime(&(c->status_timer.tv_sec));
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left = options_get_string(&s->options, "status-left");
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strftime(lbuf, sizeof lbuf, left, tm);
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llen = strlen(lbuf);
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right = options_get_string(&s->options, "status-right");
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strftime(rbuf, sizeof rbuf, right, tm);
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rlen = strlen(rbuf);
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/*
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* Figure out how much space we have for the window list. If there isn't
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* enough space, just wimp out.
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*/
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xx = 0;
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if (llen != 0)
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xx += llen + 1;
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if (rlen != 0)
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xx += rlen + 1;
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if (c->sx == 0 || c->sx <= xx)
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goto blank;
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xx = c->sx - xx;
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/*
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* Right. We have xx characters to fill. Find out how much is to go in
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* them and the offset of the current window (it must be on screen).
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*/
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width = offset = 0;
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RB_FOREACH(wl, winlinks, &s->windows) {
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size = status_width(wl) + 1;
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if (wl == s->curw)
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offset = width;
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width += size;
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}
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start = 0;
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/* If there is enough space for the total width, all is gravy. */
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if (width <= xx)
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goto draw;
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/* Find size of current window text. */
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size = status_width(s->curw);
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/*
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* If the offset is already on screen, we're good to draw from the
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* start and just leave off the end.
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*/
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if (offset + size < xx) {
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if (xx > 0) {
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rarrow = 1;
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xx--;
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}
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width = xx;
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goto draw;
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}
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/*
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* Work out how many characters we need to omit from the start. There
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* are xx characters to fill, and offset + size must be the last. So,
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* the start character is offset + size - xx.
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*/
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if (xx > 0) {
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larrow = 1;
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xx--;
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}
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start = offset + size - xx;
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if (xx > 0 && width > start + xx + 1) { /* + 1, eh? */
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rarrow = 1;
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start++;
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xx--;
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}
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width = xx;
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draw:
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/* Bail here if anything is too small too. XXX. */
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if (width == 0 || xx == 0)
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goto blank;
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/* Begin drawing and move to the starting position. */
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screen_redraw_start_client(&ctx, c);
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screen_redraw_set_attributes(&ctx, 0, colr);
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if (llen != 0) {
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screen_redraw_move_cursor(&ctx, 0, yy);
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screen_redraw_write_string(&ctx, "%s ", lbuf);
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if (larrow)
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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} else {
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if (larrow)
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screen_redraw_move_cursor(&ctx, 1, yy);
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else
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screen_redraw_move_cursor(&ctx, 0, yy);
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}
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/* Draw each character in succession. */
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offset = 0;
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RB_FOREACH(wl, winlinks, &s->windows) {
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text = status_print(s, wl, &attr);
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screen_redraw_set_attributes(&ctx, attr, colr);
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if (larrow == 1 && offset < start) {
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if (session_alert_has(s, wl, WINDOW_ACTIVITY))
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larrow = -1;
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if (session_alert_has(s, wl, WINDOW_BELL))
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larrow = -1;
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}
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for (ptr = text; *ptr != '\0'; ptr++) {
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if (offset >= start && offset < start + width)
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ctx.write(ctx.data, TTY_CHARACTER, *ptr);
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offset++;
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}
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if (rarrow == 1 && offset > start + width) {
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if (session_alert_has(s, wl, WINDOW_ACTIVITY))
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rarrow = -1;
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if (session_alert_has(s, wl, WINDOW_BELL))
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rarrow = -1;
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}
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if (offset < start + width) {
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if (offset >= start) {
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screen_redraw_set_attributes(&ctx, 0, colr);
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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}
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offset++;
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}
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xfree(text);
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}
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/* Fill the remaining space if any. */
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screen_redraw_set_attributes(&ctx, 0, colr);
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while (offset++ < xx)
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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/* Draw the last item. */
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if (rlen != 0) {
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screen_redraw_move_cursor(&ctx, c->sx - rlen - 1, yy);
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screen_redraw_write_string(&ctx, " %s", rbuf);
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}
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/* Draw the arrows. */
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if (larrow != 0) {
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if (larrow == -1)
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screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
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else
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screen_redraw_set_attributes(&ctx, 0, colr);
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if (llen != 0)
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screen_redraw_move_cursor(&ctx, llen + 1, yy);
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else
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screen_redraw_move_cursor(&ctx, 0, yy);
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ctx.write(ctx.data, TTY_CHARACTER, '<');
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}
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if (rarrow != 0) {
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if (rarrow == -1)
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screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
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else
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screen_redraw_set_attributes(&ctx, 0, colr);
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if (rlen != 0)
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screen_redraw_move_cursor(&ctx, c->sx - rlen - 2, yy);
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else
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screen_redraw_move_cursor(&ctx, c->sx - 1, yy);
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ctx.write(ctx.data, TTY_CHARACTER, '>');
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}
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screen_redraw_stop(&ctx);
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return;
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blank:
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/* Just draw the whole line as blank. */
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screen_redraw_start_client(&ctx, c);
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screen_redraw_set_attributes(&ctx, 0, colr);
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screen_redraw_move_cursor(&ctx, 0, yy);
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for (offset = 0; offset < c->sx; offset++)
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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screen_redraw_stop(&ctx);
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return;
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off:
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/*
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* Draw the real window last line. Necessary to wipe over message if
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* status is off. Not sure this is the right place for this.
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*/
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screen_redraw_start_client(&ctx, c);
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/* If the screen is too small, use blank. */
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if (screen_size_y(c->session->curw->window->screen) < c->sy) {
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screen_redraw_move_cursor(&ctx, 0, c->sy - 1);
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screen_redraw_set_attributes(&ctx, 0, 0x88);
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for (offset = 0; offset < c->sx; offset++)
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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} else
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screen_redraw_lines(&ctx, c->sy - 1, 1);
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screen_redraw_stop(&ctx);
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return;
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}
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size_t
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status_width(struct winlink *wl)
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{
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return (xsnprintf(NULL, 0, "%d:%s ", wl->idx, wl->window->name));
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}
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char *
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status_print(struct session *s, struct winlink *wl, u_char *attr)
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{
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char *text, flag;
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flag = ' ';
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if (wl == s->lastw)
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flag = '-';
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if (wl == s->curw)
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flag = '*';
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*attr = 0;
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if (session_alert_has(s, wl, WINDOW_ACTIVITY)) {
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flag = '#';
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*attr = ATTR_REVERSE;
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}
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if (session_alert_has(s, wl, WINDOW_BELL)) {
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flag = '!';
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*attr = ATTR_REVERSE;
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}
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xasprintf(&text, "%d:%s%c", wl->idx, wl->window->name, flag);
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return (text);
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}
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/* Draw client message on status line of present else on last line. */
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void
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status_message_redraw(struct client *c)
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{
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struct screen_redraw_ctx ctx;
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size_t xx, yy;
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if (c->sx == 0 || c->sy == 0)
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return;
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xx = strlen(c->message_string);
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if (xx > c->sx)
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xx = c->sx;
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yy = c->sy - 1;
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screen_redraw_start_client(&ctx, c);
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screen_redraw_set_attributes(&ctx, ATTR_REVERSE, 0x88);
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screen_redraw_move_cursor(&ctx, 0, yy);
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screen_redraw_write_string(&ctx, "%.*s", (int) xx, c->message_string);
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for (; xx < c->sx; xx++)
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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screen_redraw_stop(&ctx);
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tty_write_client(c, TTY_CURSOROFF);
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}
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/* Draw client prompt on status line of present else on last line. */
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void
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status_prompt_redraw(struct client *c)
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{
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struct screen_redraw_ctx ctx;
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size_t i, xx, yy, left, size, offset;
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char ch;
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if (c->sx == 0 || c->sy == 0)
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return;
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offset = 0;
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xx = strlen(c->prompt_string);
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if (xx > c->sx)
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xx = c->sx;
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yy = c->sy - 1;
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screen_redraw_start_client(&ctx, c);
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screen_redraw_set_attributes(&ctx, ATTR_REVERSE, 0x88);
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screen_redraw_move_cursor(&ctx, 0, yy);
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screen_redraw_write_string(&ctx, "%.*s", (int) xx, c->prompt_string);
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left = c->sx - xx;
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if (left != 0) {
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if (c->prompt_index < left)
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size = strlen(c->prompt_buffer);
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else {
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offset = c->prompt_index - left;
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if (c->prompt_index == strlen(c->prompt_buffer))
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left--;
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size = left;
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}
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screen_redraw_write_string(
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&ctx, "%.*s", (int) left, c->prompt_buffer + offset);
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for (i = xx + size; i < c->sx; i++) {
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ctx.write(ctx.data, TTY_CHARACTER, ' ');
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ctx.s->cx++;
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}
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}
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/* Draw a fake cursor. */
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screen_redraw_set_attributes(&ctx, 0, 0x88);
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screen_redraw_move_cursor(&ctx, xx + c->prompt_index - offset, yy);
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if (c->prompt_index == strlen(c->prompt_buffer))
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ch = ' ';
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else
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ch = c->prompt_buffer[c->prompt_index];
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if (ch == '\0')
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ch = ' ';
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tty_write_client(c, TTY_CHARACTER, ch);
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screen_redraw_stop(&ctx);
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tty_write_client(c, TTY_CURSOROFF);
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}
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/* Handle keys in prompt. */
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void
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status_prompt_key(struct client *c, int key)
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{
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size_t size;
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size = strlen(c->prompt_buffer);
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switch (key) {
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case KEYC_LEFT:
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if (c->prompt_index > 0) {
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c->prompt_index--;
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c->flags |= CLIENT_STATUS;
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}
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break;
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case KEYC_RIGHT:
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if (c->prompt_index < size) {
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c->prompt_index++;
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c->flags |= CLIENT_STATUS;
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}
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break;
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case '\001': /* C-a */
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if (c->prompt_index != 0) {
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c->prompt_index = 0;
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c->flags |= CLIENT_STATUS;
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}
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break;
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case '\005': /* C-e */
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if (c->prompt_index != size) {
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c->prompt_index = size;
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c->flags |= CLIENT_STATUS;
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}
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break;
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case '\010':
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case '\177':
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if (c->prompt_index != 0) {
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if (c->prompt_index == size)
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c->prompt_buffer[--c->prompt_index] = '\0';
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else {
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memmove(c->prompt_buffer + c->prompt_index - 1,
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c->prompt_buffer + c->prompt_index,
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size + 1 - c->prompt_index);
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c->prompt_index--;
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}
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c->flags |= CLIENT_STATUS;
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}
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break;
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case KEYC_DC:
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if (c->prompt_index != size) {
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memmove(c->prompt_buffer + c->prompt_index,
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c->prompt_buffer + c->prompt_index + 1,
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size + 1 - c->prompt_index);
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c->flags |= CLIENT_STATUS;
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}
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break;
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case '\r': /* enter */
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if (*c->prompt_buffer != '\0') {
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c->prompt_callback(c->prompt_data, c->prompt_buffer);
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server_clear_client_prompt(c);
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break;
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}
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/* FALLTHROUGH */
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case '\e': /* escape */
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c->prompt_callback(c->prompt_data, NULL);
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server_clear_client_prompt(c);
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break;
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default:
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if (key < 32)
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break;
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c->prompt_buffer = xrealloc(c->prompt_buffer, 1, size + 2);
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if (c->prompt_index == size) {
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c->prompt_buffer[c->prompt_index++] = key;
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c->prompt_buffer[c->prompt_index] = '\0';
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} else {
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memmove(c->prompt_buffer + c->prompt_index + 1,
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c->prompt_buffer + c->prompt_index,
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size + 1 - c->prompt_index);
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c->prompt_buffer[c->prompt_index++] = key;
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}
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c->flags |= CLIENT_STATUS;
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break;
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}
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}
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