layout-set.c - tmux - Rivoreo Source Code Repositories

 /* $OpenBSD$ */

 /*
  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
  *
  * 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 <string.h>

 #include "tmux.h"

 /*
  * Set window layouts - predefined methods to arrange windows. These are
  * one-off and generate a layout tree.
  */

 static void	layout_set_even_h(struct window *);
 static void	layout_set_even_v(struct window *);
 static void	layout_set_main_h(struct window *);
 static void	layout_set_main_v(struct window *);
 static void	layout_set_tiled(struct window *);

 static const struct {
 	const char	*name;
 	void	      	(*arrange)(struct window *);
 } layout_sets[] = {
 	{ "even-horizontal", layout_set_even_h },
 	{ "even-vertical", layout_set_even_v },
 	{ "main-horizontal", layout_set_main_h },
 	{ "main-vertical", layout_set_main_v },
 	{ "tiled", layout_set_tiled },
 };

 int
 layout_set_lookup(const char *name)
 {
 	u_int	i;
 	int	matched = -1;

 	for (i = 0; i < nitems(layout_sets); i++) {
 		if (strncmp(layout_sets[i].name, name, strlen(name)) == 0) {
 			if (matched != -1)	/* ambiguous */
 				return (-1);
 			matched = i;
 		}
 	}

 	return (matched);
 }

 u_int
 layout_set_select(struct window *w, u_int layout)
 {
 	if (layout > nitems(layout_sets) - 1)
 		layout = nitems(layout_sets) - 1;

 	if (layout_sets[layout].arrange != NULL)
 		layout_sets[layout].arrange(w);

 	w->lastlayout = layout;
 	return (layout);
 }

 u_int
 layout_set_next(struct window *w)
 {
 	u_int	layout;

 	if (w->lastlayout == -1)
 		layout = 0;
 	else {
 		layout = w->lastlayout + 1;
 		if (layout > nitems(layout_sets) - 1)
 			layout = 0;
 	}

 	if (layout_sets[layout].arrange != NULL)
 		layout_sets[layout].arrange(w);
 	w->lastlayout = layout;
 	return (layout);
 }

 u_int
 layout_set_previous(struct window *w)
 {
 	u_int	layout;

 	if (w->lastlayout == -1)
 		layout = nitems(layout_sets) - 1;
 	else {
 		layout = w->lastlayout;
 		if (layout == 0)
 			layout = nitems(layout_sets) - 1;
 		else
 			layout--;
 	}

 	if (layout_sets[layout].arrange != NULL)
 		layout_sets[layout].arrange(w);
 	w->lastlayout = layout;
 	return (layout);
 }

 static void
 layout_set_even(struct window *w, enum layout_type type)
 {
 	struct window_pane	*wp;
 	struct layout_cell	*lc, *lcnew;
 	u_int			 n, sx, sy;

 	layout_print_cell(w->layout_root, __func__, 1);

 	/* Get number of panes. */
 	n = window_count_panes(w);
 	if (n <= 1)
 		return;

 	/* Free the old root and construct a new. */
 	layout_free(w);
 	lc = w->layout_root = layout_create_cell(NULL);
 	if (type == LAYOUT_LEFTRIGHT) {
 		sx = (n * (PANE_MINIMUM + 1)) - 1;
 		if (sx < w->sx)
 			sx = w->sx;
 		sy = w->sy;
 	} else {
 		sy = (n * (PANE_MINIMUM + 1)) - 1;
 		if (sy < w->sy)
 			sy = w->sy;
 		sx = w->sx;
 	}
 	layout_set_size(lc, sx, sy, 0, 0);
 	layout_make_node(lc, type);

 	/* Build new leaf cells. */
 	TAILQ_FOREACH(wp, &w->panes, entry) {
 		lcnew = layout_create_cell(lc);
 		layout_make_leaf(lcnew, wp);
 		lcnew->sx = w->sx;
 		lcnew->sy = w->sy;
 		TAILQ_INSERT_TAIL(&lc->cells, lcnew, entry);
 	}

 	/* Spread out cells. */
 	layout_spread_cell(w, lc);

 	/* Fix cell offsets. */
 	layout_fix_offsets(lc);
 	layout_fix_panes(w);

 	layout_print_cell(w->layout_root, __func__, 1);

 	window_resize(w, lc->sx, lc->sy);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }

 static void
 layout_set_even_h(struct window *w)
 {
 	layout_set_even(w, LAYOUT_LEFTRIGHT);
 }

 static void
 layout_set_even_v(struct window *w)
 {
 	layout_set_even(w, LAYOUT_TOPBOTTOM);
 }

 static void
 layout_set_main_h(struct window *w)
 {
 	struct window_pane	*wp;
 	struct layout_cell	*lc, *lcmain, *lcrow, *lcchild;
 	u_int			 n, mainheight, otherheight, width, height;
 	u_int			 used, i, j, columns, rows, totalrows;

 	layout_print_cell(w->layout_root, __func__, 1);

 	/* Get number of panes. */
 	n = window_count_panes(w);
 	if (n <= 1)
 		return;
 	n--;	/* take off main pane */

 	/* How many rows and columns will be needed, not counting main? */
 	columns = (w->sx + 1) / (PANE_MINIMUM + 1);	/* maximum columns */
 	if (columns == 0)
 		columns = 1;
 	rows = 1 + (n - 1) / columns;
 	columns = 1 + (n - 1) / rows;
 	width = (w->sx - (n - 1)) / columns;

 	/* Get the main pane height and add one for separator line. */
 	mainheight = options_get_number(w->options, "main-pane-height") + 1;

 	/* Get the optional other pane height and add one for separator line. */
 	otherheight = options_get_number(w->options, "other-pane-height") + 1;

 	/*
 	 * If an other pane height was specified, honour it so long as it
 	 * doesn't shrink the main height to less than the main-pane-height
 	 */
 	if (otherheight > 1 && w->sy - otherheight > mainheight)
 		mainheight = w->sy - otherheight;
 	if (mainheight < PANE_MINIMUM + 1)
 		mainheight = PANE_MINIMUM + 1;

 	/* Try and make everything fit. */
 	totalrows = rows * (PANE_MINIMUM + 1) - 1;
 	if (mainheight + totalrows > w->sy) {
 		if (totalrows + PANE_MINIMUM + 1 > w->sy)
 			mainheight = PANE_MINIMUM + 2;
 		else
 			mainheight = w->sy - totalrows;
 		height = PANE_MINIMUM;
 	} else
 		height = (w->sy - mainheight - (rows - 1)) / rows;

 	/* Free old tree and create a new root. */
 	layout_free(w);
 	lc = w->layout_root = layout_create_cell(NULL);
 	layout_set_size(lc, w->sx, mainheight + rows * (height + 1) - 1, 0, 0);
 	layout_make_node(lc, LAYOUT_TOPBOTTOM);

 	/* Create the main pane. */
 	lcmain = layout_create_cell(lc);
 	layout_set_size(lcmain, w->sx, mainheight - 1, 0, 0);
 	layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
 	TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);

 	/* Create a grid of the remaining cells. */
 	wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
 	for (j = 0; j < rows; j++) {
 		/* If this is the last cell, all done. */
 		if (wp == NULL)
 			break;

 		/* Create the new row. */
 		lcrow = layout_create_cell(lc);
 		layout_set_size(lcrow, w->sx, height, 0, 0);
 		TAILQ_INSERT_TAIL(&lc->cells, lcrow, entry);

 		/* If only one column, just use the row directly. */
 		if (columns == 1) {
 			layout_make_leaf(lcrow, wp);
 			wp = TAILQ_NEXT(wp, entry);
 			continue;
 		}

 		/* Add in the columns. */
 		layout_make_node(lcrow, LAYOUT_LEFTRIGHT);
 		for (i = 0; i < columns; i++) {
 			/* Create and add a pane cell. */
 			lcchild = layout_create_cell(lcrow);
 			layout_set_size(lcchild, width, height, 0, 0);
 			layout_make_leaf(lcchild, wp);
 			TAILQ_INSERT_TAIL(&lcrow->cells, lcchild, entry);

 			/* Move to the next cell. */
 			if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
 				break;
 		}

 		/* Adjust the row to fit the full width if necessary. */
 		if (i == columns)
 			i--;
 		used = ((i + 1) * (width + 1)) - 1;
 		if (w->sx <= used)
 			continue;
 		lcchild = TAILQ_LAST(&lcrow->cells, layout_cells);
 		layout_resize_adjust(w, lcchild, LAYOUT_LEFTRIGHT,
 		    w->sx - used);
 	}

 	/* Adjust the last row height to fit if necessary. */
 	used = mainheight + (rows * height) + rows - 1;
 	if (w->sy > used) {
 		lcrow = TAILQ_LAST(&lc->cells, layout_cells);
 		layout_resize_adjust(w, lcrow, LAYOUT_TOPBOTTOM,
 		    w->sy - used);
 	}

 	/* Fix cell offsets. */
 	layout_fix_offsets(lc);
 	layout_fix_panes(w);

 	layout_print_cell(w->layout_root, __func__, 1);

 	window_resize(w, lc->sx, lc->sy);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }

 static void
 layout_set_main_v(struct window *w)
 {
 	struct window_pane	*wp;
 	struct layout_cell	*lc, *lcmain, *lccolumn, *lcchild;
 	u_int			 n, mainwidth, otherwidth, width, height;
 	u_int			 used, i, j, columns, rows, totalcolumns;

 	layout_print_cell(w->layout_root, __func__, 1);

 	/* Get number of panes. */
 	n = window_count_panes(w);
 	if (n <= 1)
 		return;
 	n--;	/* take off main pane */

 	/* How many rows and columns will be needed, not counting main? */
 	rows = (w->sy + 1) / (PANE_MINIMUM + 1);	/* maximum rows */
 	if (rows == 0)
 		rows = 1;
 	columns = 1 + (n - 1) / rows;
 	rows = 1 + (n - 1) / columns;
 	height = (w->sy - (n - 1)) / rows;

 	/* Get the main pane width and add one for separator line. */
 	mainwidth = options_get_number(w->options, "main-pane-width") + 1;

 	/* Get the optional other pane width and add one for separator line. */
 	otherwidth = options_get_number(w->options, "other-pane-width") + 1;

 	/*
 	 * If an other pane width was specified, honour it so long as it
 	 * doesn't shrink the main width to less than the main-pane-width
 	 */
 	if (otherwidth > 1 && w->sx - otherwidth > mainwidth)
 		mainwidth = w->sx - otherwidth;
 	if (mainwidth < PANE_MINIMUM + 1)
 		mainwidth = PANE_MINIMUM + 1;

 	/* Try and make everything fit. */
 	totalcolumns = columns * (PANE_MINIMUM + 1) - 1;
 	if (mainwidth + totalcolumns > w->sx) {
 		if (totalcolumns + PANE_MINIMUM + 1 > w->sx)
 			mainwidth = PANE_MINIMUM + 2;
 		else
 			mainwidth = w->sx - totalcolumns;
 		width = PANE_MINIMUM;
 	} else
 		width = (w->sx - mainwidth - (columns - 1)) / columns;

 	/* Free old tree and create a new root. */
 	layout_free(w);
 	lc = w->layout_root = layout_create_cell(NULL);
 	layout_set_size(lc, mainwidth + columns * (width + 1) - 1, w->sy, 0, 0);
 	layout_make_node(lc, LAYOUT_LEFTRIGHT);

 	/* Create the main pane. */
 	lcmain = layout_create_cell(lc);
 	layout_set_size(lcmain, mainwidth - 1, w->sy, 0, 0);
 	layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
 	TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);

 	/* Create a grid of the remaining cells. */
 	wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
 	for (j = 0; j < columns; j++) {
 		/* If this is the last cell, all done. */
 		if (wp == NULL)
 			break;

 		/* Create the new column. */
 		lccolumn = layout_create_cell(lc);
 		layout_set_size(lccolumn, width, w->sy, 0, 0);
 		TAILQ_INSERT_TAIL(&lc->cells, lccolumn, entry);

 		/* If only one row, just use the row directly. */
 		if (rows == 1) {
 			layout_make_leaf(lccolumn, wp);
 			wp = TAILQ_NEXT(wp, entry);
 			continue;
 		}

 		/* Add in the rows. */
 		layout_make_node(lccolumn, LAYOUT_TOPBOTTOM);
 		for (i = 0; i < rows; i++) {
 			/* Create and add a pane cell. */
 			lcchild = layout_create_cell(lccolumn);
 			layout_set_size(lcchild, width, height, 0, 0);
 			layout_make_leaf(lcchild, wp);
 			TAILQ_INSERT_TAIL(&lccolumn->cells, lcchild, entry);

 			/* Move to the next cell. */
 			if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
 				break;
 		}

 		/* Adjust the column to fit the full height if necessary. */
 		if (i == rows)
 			i--;
 		used = ((i + 1) * (height + 1)) - 1;
 		if (w->sy <= used)
 			continue;
 		lcchild = TAILQ_LAST(&lccolumn->cells, layout_cells);
 		layout_resize_adjust(w, lcchild, LAYOUT_TOPBOTTOM,
 		    w->sy - used);
 	}

 	/* Adjust the last column width to fit if necessary. */
 	used = mainwidth + (columns * width) + columns - 1;
 	if (w->sx > used) {
 		lccolumn = TAILQ_LAST(&lc->cells, layout_cells);
 		layout_resize_adjust(w, lccolumn, LAYOUT_LEFTRIGHT,
 		    w->sx - used);
 	}

 	/* Fix cell offsets. */
 	layout_fix_offsets(lc);
 	layout_fix_panes(w);

 	layout_print_cell(w->layout_root, __func__, 1);

 	window_resize(w, lc->sx, lc->sy);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }

 void
 layout_set_tiled(struct window *w)
 {
 	struct window_pane	*wp;
 	struct layout_cell	*lc, *lcrow, *lcchild;
 	u_int			 n, width, height, used, sx, sy;
 	u_int			 i, j, columns, rows;

 	layout_print_cell(w->layout_root, __func__, 1);

 	/* Get number of panes. */
 	n = window_count_panes(w);
 	if (n <= 1)
 		return;

 	/* How many rows and columns are wanted? */
 	rows = columns = 1;
 	while (rows * columns < n) {
 		rows++;
 		if (rows * columns < n)
 			columns++;
 	}

 	/* What width and height should they be? */
 	width = (w->sx - (columns - 1)) / columns;
 	if (width < PANE_MINIMUM)
 		width = PANE_MINIMUM;
 	height = (w->sy - (rows - 1)) / rows;
 	if (height < PANE_MINIMUM)
 		height = PANE_MINIMUM;

 	/* Free old tree and create a new root. */
 	layout_free(w);
 	lc = w->layout_root = layout_create_cell(NULL);
 	sx = ((width + 1) * columns) - 1;
 	if (sx < w->sx)
 		sx = w->sx;
 	sy = ((height + 1) * rows) - 1;
 	if (sy < w->sy)
 		sy = w->sy;
 	layout_set_size(lc, sx, sy, 0, 0);
 	layout_make_node(lc, LAYOUT_TOPBOTTOM);

 	/* Create a grid of the cells. */
 	wp = TAILQ_FIRST(&w->panes);
 	for (j = 0; j < rows; j++) {
 		/* If this is the last cell, all done. */
 		if (wp == NULL)
 			break;

 		/* Create the new row. */
 		lcrow = layout_create_cell(lc);
 		layout_set_size(lcrow, w->sx, height, 0, 0);
 		TAILQ_INSERT_TAIL(&lc->cells, lcrow, entry);

 		/* If only one column, just use the row directly. */
 		if (n - (j * columns) == 1 || columns == 1) {
 			layout_make_leaf(lcrow, wp);
 			wp = TAILQ_NEXT(wp, entry);
 			continue;
 		}

 		/* Add in the columns. */
 		layout_make_node(lcrow, LAYOUT_LEFTRIGHT);
 		for (i = 0; i < columns; i++) {
 			/* Create and add a pane cell. */
 			lcchild = layout_create_cell(lcrow);
 			layout_set_size(lcchild, width, height, 0, 0);
 			layout_make_leaf(lcchild, wp);
 			TAILQ_INSERT_TAIL(&lcrow->cells, lcchild, entry);

 			/* Move to the next cell. */
 			if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
 				break;
 		}

 		/*
 		 * Adjust the row and columns to fit the full width if
 		 * necessary.
 		 */
 		if (i == columns)
 			i--;
 		used = ((i + 1) * (width + 1)) - 1;
 		if (w->sx <= used)
 			continue;
 		lcchild = TAILQ_LAST(&lcrow->cells, layout_cells);
 		layout_resize_adjust(w, lcchild, LAYOUT_LEFTRIGHT,
 		    w->sx - used);
 	}

 	/* Adjust the last row height to fit if necessary. */
 	used = (rows * height) + rows - 1;
 	if (w->sy > used) {
 		lcrow = TAILQ_LAST(&lc->cells, layout_cells);
 		layout_resize_adjust(w, lcrow, LAYOUT_TOPBOTTOM,
 		    w->sy - used);
 	}

 	/* Fix cell offsets. */
 	layout_fix_offsets(lc);
 	layout_fix_panes(w);

 	layout_print_cell(w->layout_root, __func__, 1);

 	window_resize(w, lc->sx, lc->sy);
 	notify_window("window-layout-changed", w);
 	server_redraw_window(w);
 }
	/* $OpenBSD$ */

	/*
	* Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
	*
	* 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 <string.h>

	#include "tmux.h"

	/*
	* Set window layouts - predefined methods to arrange windows. These are
	* one-off and generate a layout tree.
	*/

	static void layout_set_even_h(struct window *);
	static void layout_set_even_v(struct window *);
	static void layout_set_main_h(struct window *);
	static void layout_set_main_v(struct window *);
	static void layout_set_tiled(struct window *);

	static const struct {
	const char *name;
	void (arrange)(struct window );
	} layout_sets[] = {
	{ "even-horizontal", layout_set_even_h },
	{ "even-vertical", layout_set_even_v },
	{ "main-horizontal", layout_set_main_h },
	{ "main-vertical", layout_set_main_v },
	{ "tiled", layout_set_tiled },
	};

	int
	layout_set_lookup(const char *name)
	{
	u_int i;
	int matched = -1;

	for (i = 0; i < nitems(layout_sets); i++) {
	if (strncmp(layout_sets[i].name, name, strlen(name)) == 0) {
	if (matched != -1) /* ambiguous */
	return (-1);
	matched = i;
	}
	}

	return (matched);
	}

	u_int
	layout_set_select(struct window *w, u_int layout)
	{
	if (layout > nitems(layout_sets) - 1)
	layout = nitems(layout_sets) - 1;

	if (layout_sets[layout].arrange != NULL)
	layout_sets[layout].arrange(w);

	w->lastlayout = layout;
	return (layout);
	}

	u_int
	layout_set_next(struct window *w)
	{
	u_int layout;

	if (w->lastlayout == -1)
	layout = 0;
	else {
	layout = w->lastlayout + 1;
	if (layout > nitems(layout_sets) - 1)
	layout = 0;
	}

	if (layout_sets[layout].arrange != NULL)
	layout_sets[layout].arrange(w);
	w->lastlayout = layout;
	return (layout);
	}

	u_int
	layout_set_previous(struct window *w)
	{
	u_int layout;

	if (w->lastlayout == -1)
	layout = nitems(layout_sets) - 1;
	else {
	layout = w->lastlayout;
	if (layout == 0)
	layout = nitems(layout_sets) - 1;
	else
	layout--;
	}

	if (layout_sets[layout].arrange != NULL)
	layout_sets[layout].arrange(w);
	w->lastlayout = layout;
	return (layout);
	}

	static void
	layout_set_even(struct window *w, enum layout_type type)
	{
	struct window_pane *wp;
	struct layout_cell lc, lcnew;
	u_int n, sx, sy;

	layout_print_cell(w->layout_root, __func__, 1);

	/* Get number of panes. */
	n = window_count_panes(w);
	if (n <= 1)
	return;

	/* Free the old root and construct a new. */
	layout_free(w);
	lc = w->layout_root = layout_create_cell(NULL);
	if (type == LAYOUT_LEFTRIGHT) {
	sx = (n * (PANE_MINIMUM + 1)) - 1;
	if (sx < w->sx)
	sx = w->sx;
	sy = w->sy;
	} else {
	sy = (n * (PANE_MINIMUM + 1)) - 1;
	if (sy < w->sy)
	sy = w->sy;
	sx = w->sx;
	}
	layout_set_size(lc, sx, sy, 0, 0);
	layout_make_node(lc, type);

	/* Build new leaf cells. */
	TAILQ_FOREACH(wp, &w->panes, entry) {
	lcnew = layout_create_cell(lc);
	layout_make_leaf(lcnew, wp);
	lcnew->sx = w->sx;
	lcnew->sy = w->sy;
	TAILQ_INSERT_TAIL(&lc->cells, lcnew, entry);
	}

	/* Spread out cells. */
	layout_spread_cell(w, lc);

	/* Fix cell offsets. */
	layout_fix_offsets(lc);
	layout_fix_panes(w);

	layout_print_cell(w->layout_root, __func__, 1);

	window_resize(w, lc->sx, lc->sy);
	notify_window("window-layout-changed", w);
	server_redraw_window(w);
	}

	static void
	layout_set_even_h(struct window *w)
	{
	layout_set_even(w, LAYOUT_LEFTRIGHT);
	}

	static void
	layout_set_even_v(struct window *w)
	{
	layout_set_even(w, LAYOUT_TOPBOTTOM);
	}

	static void
	layout_set_main_h(struct window *w)
	{
	struct window_pane *wp;
	struct layout_cell lc, lcmain, lcrow, lcchild;
	u_int n, mainheight, otherheight, width, height;
	u_int used, i, j, columns, rows, totalrows;

	layout_print_cell(w->layout_root, __func__, 1);

	/* Get number of panes. */
	n = window_count_panes(w);
	if (n <= 1)
	return;
	n--; /* take off main pane */

	/* How many rows and columns will be needed, not counting main? */
	columns = (w->sx + 1) / (PANE_MINIMUM + 1); /* maximum columns */
	if (columns == 0)
	columns = 1;
	rows = 1 + (n - 1) / columns;
	columns = 1 + (n - 1) / rows;
	width = (w->sx - (n - 1)) / columns;

	/* Get the main pane height and add one for separator line. */
	mainheight = options_get_number(w->options, "main-pane-height") + 1;

	/* Get the optional other pane height and add one for separator line. */
	otherheight = options_get_number(w->options, "other-pane-height") + 1;

	/*
	* If an other pane height was specified, honour it so long as it
	* doesn't shrink the main height to less than the main-pane-height
	*/
	if (otherheight > 1 && w->sy - otherheight > mainheight)
	mainheight = w->sy - otherheight;
	if (mainheight < PANE_MINIMUM + 1)
	mainheight = PANE_MINIMUM + 1;

	/* Try and make everything fit. */
	totalrows = rows * (PANE_MINIMUM + 1) - 1;
	if (mainheight + totalrows > w->sy) {
	if (totalrows + PANE_MINIMUM + 1 > w->sy)
	mainheight = PANE_MINIMUM + 2;
	else
	mainheight = w->sy - totalrows;
	height = PANE_MINIMUM;
	} else
	height = (w->sy - mainheight - (rows - 1)) / rows;

	/* Free old tree and create a new root. */
	layout_free(w);
	lc = w->layout_root = layout_create_cell(NULL);
	layout_set_size(lc, w->sx, mainheight + rows * (height + 1) - 1, 0, 0);
	layout_make_node(lc, LAYOUT_TOPBOTTOM);

	/* Create the main pane. */
	lcmain = layout_create_cell(lc);
	layout_set_size(lcmain, w->sx, mainheight - 1, 0, 0);
	layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
	TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);

	/* Create a grid of the remaining cells. */
	wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
	for (j = 0; j < rows; j++) {
	/* If this is the last cell, all done. */
	if (wp == NULL)
	break;

	/* Create the new row. */
	lcrow = layout_create_cell(lc);
	layout_set_size(lcrow, w->sx, height, 0, 0);
	TAILQ_INSERT_TAIL(&lc->cells, lcrow, entry);

	/* If only one column, just use the row directly. */
	if (columns == 1) {
	layout_make_leaf(lcrow, wp);
	wp = TAILQ_NEXT(wp, entry);
	continue;
	}

	/* Add in the columns. */
	layout_make_node(lcrow, LAYOUT_LEFTRIGHT);
	for (i = 0; i < columns; i++) {
	/* Create and add a pane cell. */
	lcchild = layout_create_cell(lcrow);
	layout_set_size(lcchild, width, height, 0, 0);
	layout_make_leaf(lcchild, wp);
	TAILQ_INSERT_TAIL(&lcrow->cells, lcchild, entry);

	/* Move to the next cell. */
	if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
	break;
	}

	/* Adjust the row to fit the full width if necessary. */
	if (i == columns)
	i--;
	used = ((i + 1) * (width + 1)) - 1;
	if (w->sx <= used)
	continue;
	lcchild = TAILQ_LAST(&lcrow->cells, layout_cells);
	layout_resize_adjust(w, lcchild, LAYOUT_LEFTRIGHT,
	w->sx - used);
	}

	/* Adjust the last row height to fit if necessary. */
	used = mainheight + (rows * height) + rows - 1;
	if (w->sy > used) {
	lcrow = TAILQ_LAST(&lc->cells, layout_cells);
	layout_resize_adjust(w, lcrow, LAYOUT_TOPBOTTOM,
	w->sy - used);
	}

	/* Fix cell offsets. */
	layout_fix_offsets(lc);
	layout_fix_panes(w);

	layout_print_cell(w->layout_root, __func__, 1);

	window_resize(w, lc->sx, lc->sy);
	notify_window("window-layout-changed", w);
	server_redraw_window(w);
	}

	static void
	layout_set_main_v(struct window *w)
	{
	struct window_pane *wp;
	struct layout_cell lc, lcmain, lccolumn, lcchild;
	u_int n, mainwidth, otherwidth, width, height;
	u_int used, i, j, columns, rows, totalcolumns;

	layout_print_cell(w->layout_root, __func__, 1);

	/* Get number of panes. */
	n = window_count_panes(w);
	if (n <= 1)
	return;
	n--; /* take off main pane */

	/* How many rows and columns will be needed, not counting main? */
	rows = (w->sy + 1) / (PANE_MINIMUM + 1); /* maximum rows */
	if (rows == 0)
	rows = 1;
	columns = 1 + (n - 1) / rows;
	rows = 1 + (n - 1) / columns;
	height = (w->sy - (n - 1)) / rows;

	/* Get the main pane width and add one for separator line. */
	mainwidth = options_get_number(w->options, "main-pane-width") + 1;

	/* Get the optional other pane width and add one for separator line. */
	otherwidth = options_get_number(w->options, "other-pane-width") + 1;

	/*
	* If an other pane width was specified, honour it so long as it
	* doesn't shrink the main width to less than the main-pane-width
	*/
	if (otherwidth > 1 && w->sx - otherwidth > mainwidth)
	mainwidth = w->sx - otherwidth;
	if (mainwidth < PANE_MINIMUM + 1)
	mainwidth = PANE_MINIMUM + 1;

	/* Try and make everything fit. */
	totalcolumns = columns * (PANE_MINIMUM + 1) - 1;
	if (mainwidth + totalcolumns > w->sx) {
	if (totalcolumns + PANE_MINIMUM + 1 > w->sx)
	mainwidth = PANE_MINIMUM + 2;
	else
	mainwidth = w->sx - totalcolumns;
	width = PANE_MINIMUM;
	} else
	width = (w->sx - mainwidth - (columns - 1)) / columns;

	/* Free old tree and create a new root. */
	layout_free(w);
	lc = w->layout_root = layout_create_cell(NULL);
	layout_set_size(lc, mainwidth + columns * (width + 1) - 1, w->sy, 0, 0);
	layout_make_node(lc, LAYOUT_LEFTRIGHT);

	/* Create the main pane. */
	lcmain = layout_create_cell(lc);
	layout_set_size(lcmain, mainwidth - 1, w->sy, 0, 0);
	layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
	TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);

	/* Create a grid of the remaining cells. */
	wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
	for (j = 0; j < columns; j++) {
	/* If this is the last cell, all done. */
	if (wp == NULL)
	break;

	/* Create the new column. */
	lccolumn = layout_create_cell(lc);
	layout_set_size(lccolumn, width, w->sy, 0, 0);
	TAILQ_INSERT_TAIL(&lc->cells, lccolumn, entry);

	/* If only one row, just use the row directly. */
	if (rows == 1) {
	layout_make_leaf(lccolumn, wp);
	wp = TAILQ_NEXT(wp, entry);
	continue;
	}

	/* Add in the rows. */
	layout_make_node(lccolumn, LAYOUT_TOPBOTTOM);
	for (i = 0; i < rows; i++) {
	/* Create and add a pane cell. */
	lcchild = layout_create_cell(lccolumn);
	layout_set_size(lcchild, width, height, 0, 0);
	layout_make_leaf(lcchild, wp);
	TAILQ_INSERT_TAIL(&lccolumn->cells, lcchild, entry);

	/* Move to the next cell. */
	if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
	break;
	}

	/* Adjust the column to fit the full height if necessary. */
	if (i == rows)
	i--;
	used = ((i + 1) * (height + 1)) - 1;
	if (w->sy <= used)
	continue;
	lcchild = TAILQ_LAST(&lccolumn->cells, layout_cells);
	layout_resize_adjust(w, lcchild, LAYOUT_TOPBOTTOM,
	w->sy - used);
	}

	/* Adjust the last column width to fit if necessary. */
	used = mainwidth + (columns * width) + columns - 1;
	if (w->sx > used) {
	lccolumn = TAILQ_LAST(&lc->cells, layout_cells);
	layout_resize_adjust(w, lccolumn, LAYOUT_LEFTRIGHT,
	w->sx - used);
	}

	/* Fix cell offsets. */
	layout_fix_offsets(lc);
	layout_fix_panes(w);

	layout_print_cell(w->layout_root, __func__, 1);

	window_resize(w, lc->sx, lc->sy);
	notify_window("window-layout-changed", w);
	server_redraw_window(w);
	}

	void
	layout_set_tiled(struct window *w)
	{
	struct window_pane *wp;
	struct layout_cell lc, lcrow, *lcchild;
	u_int n, width, height, used, sx, sy;
	u_int i, j, columns, rows;

	layout_print_cell(w->layout_root, __func__, 1);

	/* Get number of panes. */
	n = window_count_panes(w);
	if (n <= 1)
	return;

	/* How many rows and columns are wanted? */
	rows = columns = 1;
	while (rows * columns < n) {
	rows++;
	if (rows * columns < n)
	columns++;
	}

	/* What width and height should they be? */
	width = (w->sx - (columns - 1)) / columns;
	if (width < PANE_MINIMUM)
	width = PANE_MINIMUM;
	height = (w->sy - (rows - 1)) / rows;
	if (height < PANE_MINIMUM)
	height = PANE_MINIMUM;

	/* Free old tree and create a new root. */
	layout_free(w);
	lc = w->layout_root = layout_create_cell(NULL);
	sx = ((width + 1) * columns) - 1;
	if (sx < w->sx)
	sx = w->sx;
	sy = ((height + 1) * rows) - 1;
	if (sy < w->sy)
	sy = w->sy;
	layout_set_size(lc, sx, sy, 0, 0);
	layout_make_node(lc, LAYOUT_TOPBOTTOM);

	/* Create a grid of the cells. */
	wp = TAILQ_FIRST(&w->panes);
	for (j = 0; j < rows; j++) {
	/* If this is the last cell, all done. */
	if (wp == NULL)
	break;

	/* Create the new row. */
	lcrow = layout_create_cell(lc);
	layout_set_size(lcrow, w->sx, height, 0, 0);
	TAILQ_INSERT_TAIL(&lc->cells, lcrow, entry);

	/* If only one column, just use the row directly. */
	if (n - (j * columns) == 1 \|\| columns == 1) {
	layout_make_leaf(lcrow, wp);
	wp = TAILQ_NEXT(wp, entry);
	continue;
	}

	/* Add in the columns. */
	layout_make_node(lcrow, LAYOUT_LEFTRIGHT);
	for (i = 0; i < columns; i++) {
	/* Create and add a pane cell. */
	lcchild = layout_create_cell(lcrow);
	layout_set_size(lcchild, width, height, 0, 0);
	layout_make_leaf(lcchild, wp);
	TAILQ_INSERT_TAIL(&lcrow->cells, lcchild, entry);

	/* Move to the next cell. */
	if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
	break;
	}

	/*
	* Adjust the row and columns to fit the full width if
	* necessary.
	*/
	if (i == columns)
	i--;
	used = ((i + 1) * (width + 1)) - 1;
	if (w->sx <= used)
	continue;
	lcchild = TAILQ_LAST(&lcrow->cells, layout_cells);
	layout_resize_adjust(w, lcchild, LAYOUT_LEFTRIGHT,
	w->sx - used);
	}

	/* Adjust the last row height to fit if necessary. */
	used = (rows * height) + rows - 1;
	if (w->sy > used) {
	lcrow = TAILQ_LAST(&lc->cells, layout_cells);
	layout_resize_adjust(w, lcrow, LAYOUT_TOPBOTTOM,
	w->sy - used);
	}

	/* Fix cell offsets. */
	layout_fix_offsets(lc);
	layout_fix_panes(w);

	layout_print_cell(w->layout_root, __func__, 1);

	window_resize(w, lc->sx, lc->sy);
	notify_window("window-layout-changed", w);
	server_redraw_window(w);
	}