status.c - tmux - Rivoreo Source Code Repositories

 /* $Id: status.c,v 1.30 2008-06-18 22:21:51 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;
 	int				larrow, rarrow;

 	yy = options_get_number(&s->options, "status-lines");
 	if (c->sy == 0 || yy == 0)
 		return;
 	larrow = rarrow = 0;

 	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) {
 		if (xx > 0) {
 			rarrow = 1;
 			xx--;
 		}

 		width = xx;
 		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.
 	 */
 	if (xx > 0) {
 		larrow = 1;
 		xx--;
 	}

 	start = offset + size - xx;
  	if (xx > 0 && width > start + xx + 1) { /* + 1, eh? */
  		rarrow = 1;
  		start++;
  		xx--;
  	}
  	width = xx;

 draw:
 	/* Bail here if anything is too small too. XXX. */
 	if (width == 0 || xx == 0)
 		goto blank;

  	/* 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);
 		if (larrow)
 			ctx.write(ctx.data, TTY_CHARACTER, ' ');
 	} else {
 		if (larrow)
 			screen_redraw_move_cursor(&ctx, 1, yy);
 		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);

 		if (larrow == 1 && offset < start) {
 			if (session_alert_has(s, wl, WINDOW_ACTIVITY))
 				larrow = -1;
 			if (session_alert_has(s, wl, WINDOW_BELL))
 				larrow = -1;
 		}

  		for (ptr = text; *ptr != '\0'; ptr++) {
 			if (offset >= start && offset < start + width)
 				ctx.write(ctx.data, TTY_CHARACTER, *ptr);
 			offset++;
 		}

 		if (rarrow == 1 && offset > start + width) {
 			if (session_alert_has(s, wl, WINDOW_ACTIVITY))
 				rarrow = -1;
 			if (session_alert_has(s, wl, WINDOW_BELL))
 				rarrow = -1;
 		}

 		if (offset < start + width) {
 			if (offset >= start) {
 				screen_redraw_set_attributes(&ctx, 0, colr);
 				ctx.write(ctx.data, TTY_CHARACTER, ' ');
 			}
 			offset++;
 		}

 		xfree(text);
 	}

 	/* Fill the remaining space if any. */
 	screen_redraw_set_attributes(&ctx, 0, colr);
  	while (offset++ < xx)
 		ctx.write(ctx.data, TTY_CHARACTER, ' ');

 	/* Draw the last item. */
 	if (rlen != 0) {
 		screen_redraw_move_cursor(&ctx, c->sx - rlen - 1, yy);
 		screen_redraw_write_string(&ctx, " %s", rbuf);
 	}

 	/* Draw the arrows. */
 	if (larrow != 0) {
 		if (larrow == -1)
 			screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
 		else
 			screen_redraw_set_attributes(&ctx, 0, colr);
 		if (llen != 0)
 			screen_redraw_move_cursor(&ctx, llen + 1, yy);
 		else
 			screen_redraw_move_cursor(&ctx, 0, yy);
  		ctx.write(ctx.data, TTY_CHARACTER, '<');
 	}
 	if (rarrow != 0) {
 		if (rarrow == -1)
 			screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
 		else
 			screen_redraw_set_attributes(&ctx, 0, colr);
 		if (rlen != 0)
 			screen_redraw_move_cursor(&ctx, c->sx - rlen - 2, yy);
 		else
 			screen_redraw_move_cursor(&ctx, c->sx - 1, yy);
  		ctx.write(ctx.data, TTY_CHARACTER, '>');
 	}

 	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);
 }
	/* $Id: status.c,v 1.30 2008-06-18 22:21:51 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;
	int larrow, rarrow;

	yy = options_get_number(&s->options, "status-lines");
	if (c->sy == 0 \|\| yy == 0)
	return;
	larrow = rarrow = 0;

	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) {
	if (xx > 0) {
	rarrow = 1;
	xx--;
	}

	width = xx;
	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.
	*/
	if (xx > 0) {
	larrow = 1;
	xx--;
	}

	start = offset + size - xx;
	if (xx > 0 && width > start + xx + 1) { /* + 1, eh? */
	rarrow = 1;
	start++;
	xx--;
	}
	width = xx;

	draw:
	/* Bail here if anything is too small too. XXX. */
	if (width == 0 \|\| xx == 0)
	goto blank;

	/* 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);
	if (larrow)
	ctx.write(ctx.data, TTY_CHARACTER, ' ');
	} else {
	if (larrow)
	screen_redraw_move_cursor(&ctx, 1, yy);
	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);

	if (larrow == 1 && offset < start) {
	if (session_alert_has(s, wl, WINDOW_ACTIVITY))
	larrow = -1;
	if (session_alert_has(s, wl, WINDOW_BELL))
	larrow = -1;
	}

	for (ptr = text; *ptr != '\0'; ptr++) {
	if (offset >= start && offset < start + width)
	ctx.write(ctx.data, TTY_CHARACTER, *ptr);
	offset++;
	}

	if (rarrow == 1 && offset > start + width) {
	if (session_alert_has(s, wl, WINDOW_ACTIVITY))
	rarrow = -1;
	if (session_alert_has(s, wl, WINDOW_BELL))
	rarrow = -1;
	}

	if (offset < start + width) {
	if (offset >= start) {
	screen_redraw_set_attributes(&ctx, 0, colr);
	ctx.write(ctx.data, TTY_CHARACTER, ' ');
	}
	offset++;
	}

	xfree(text);
	}

	/* Fill the remaining space if any. */
	screen_redraw_set_attributes(&ctx, 0, colr);
	while (offset++ < xx)
	ctx.write(ctx.data, TTY_CHARACTER, ' ');

	/* Draw the last item. */
	if (rlen != 0) {
	screen_redraw_move_cursor(&ctx, c->sx - rlen - 1, yy);
	screen_redraw_write_string(&ctx, " %s", rbuf);
	}

	/* Draw the arrows. */
	if (larrow != 0) {
	if (larrow == -1)
	screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
	else
	screen_redraw_set_attributes(&ctx, 0, colr);
	if (llen != 0)
	screen_redraw_move_cursor(&ctx, llen + 1, yy);
	else
	screen_redraw_move_cursor(&ctx, 0, yy);
	ctx.write(ctx.data, TTY_CHARACTER, '<');
	}
	if (rarrow != 0) {
	if (rarrow == -1)
	screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
	else
	screen_redraw_set_attributes(&ctx, 0, colr);
	if (rlen != 0)
	screen_redraw_move_cursor(&ctx, c->sx - rlen - 2, yy);
	else
	screen_redraw_move_cursor(&ctx, c->sx - 1, yy);
	ctx.write(ctx.data, TTY_CHARACTER, '>');
	}

	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);
	}