forked from ThomasAdam/tmux-cvs-archived
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layout-string.c
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layout-string.c
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/* $Id: layout-string.c,v 1.4 2010/07/02 02:54:52 tcunha Exp $ */
/*
* Copyright (c) 2009 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Figure out the pane position based on a description. Fairly simple right
* now, just understands a set of strings: left, right, top, bottom, top-left
* top-right, bottom-left, bottom-right.
*/
struct layout_cell *layout_find_top(struct layout_cell *);
struct layout_cell *layout_find_bottom(struct layout_cell *);
struct layout_cell *layout_find_left(struct layout_cell *);
struct layout_cell *layout_find_right(struct layout_cell *);
struct layout_cell *layout_find_topleft(struct layout_cell *);
struct layout_cell *layout_find_topright(struct layout_cell *);
struct layout_cell *layout_find_bottomleft(struct layout_cell *);
/* Find the cell; returns NULL if string not understood. */
struct layout_cell *
layout_find_string(struct window *w, const char *s)
{
struct layout_cell *lc;
lc = NULL;
if (strcasecmp(s, "top") == 0)
lc = layout_find_top(w->layout_root);
else if (strcasecmp(s, "bottom") == 0)
lc = layout_find_bottom(w->layout_root);
else if (strcasecmp(s, "left") == 0)
lc = layout_find_left(w->layout_root);
else if (strcasecmp(s, "right") == 0)
lc = layout_find_right(w->layout_root);
else if (strcasecmp(s, "top-left") == 0)
lc = layout_find_topleft(w->layout_root);
else if (strcasecmp(s, "top-right") == 0)
lc = layout_find_topright(w->layout_root);
else if (strcasecmp(s, "bottom-left") == 0)
lc = layout_find_bottomleft(w->layout_root);
else if (strcasecmp(s, "bottom-right") == 0)
lc = layout_find_bottomright(w->layout_root);
if (lc == NULL || lc->type != LAYOUT_WINDOWPANE)
return (NULL);
return (lc);
}
/*
* Find the top cell. Because splits in the same direction are stored as a
* list, this is just the first in the list. Return NULL if no topmost cell.
* For an unnested cell (not split), the top cell is always itself.
*/
struct layout_cell *
layout_find_top(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
else if (lc->type == LAYOUT_TOPBOTTOM)
return (TAILQ_FIRST(&lc->cells));
return (NULL);
}
/*
* Find the bottom cell. Similarly to the top cell, this is just the last in
* the list.
*/
struct layout_cell *
layout_find_bottom(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
else if (lc->type == LAYOUT_TOPBOTTOM)
return (TAILQ_LAST(&lc->cells, layout_cells));
return (NULL);
}
/* Find the left cell. */
struct layout_cell *
layout_find_left(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
else if (lc->type == LAYOUT_LEFTRIGHT)
return (TAILQ_FIRST(&lc->cells));
return (NULL);
}
/* Find the right cell. */
struct layout_cell *
layout_find_right(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
else if (lc->type == LAYOUT_LEFTRIGHT)
return (TAILQ_LAST(&lc->cells, layout_cells));
return (NULL);
}
/*
* Find the top-left cell. This means recursing until there are no more moves
* to be made.
*/
struct layout_cell *
layout_find_topleft(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
lc = TAILQ_FIRST(&lc->cells);
return (layout_find_topleft(lc));
}
/* Find the top-right cell. */
struct layout_cell *
layout_find_topright(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
if (lc->type == LAYOUT_LEFTRIGHT)
lc = TAILQ_LAST(&lc->cells, layout_cells);
else
lc = TAILQ_FIRST(&lc->cells);
return (layout_find_topright(lc));
}
/* Find the bottom-left cell. */
struct layout_cell *
layout_find_bottomleft(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
if (lc->type == LAYOUT_LEFTRIGHT)
lc = TAILQ_FIRST(&lc->cells);
else
lc = TAILQ_LAST(&lc->cells, layout_cells);
return (layout_find_bottomleft(lc));
}
/* Find the bottom-right cell. */
struct layout_cell *
layout_find_bottomright(struct layout_cell *lc)
{
if (lc->type == LAYOUT_WINDOWPANE)
return (lc);
lc = TAILQ_LAST(&lc->cells, layout_cells);
return (layout_find_bottomright(lc));
}