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/* $Id: layout-set.c,v 1.9 2011/03/19 23:31:08 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 <string.h>
#include "tmux.h"
/*
* Set window layouts - predefined methods to arrange windows. These are one-off
* and generate a layout tree.
*/
void layout_set_even_h(struct window *);
void layout_set_even_v(struct window *);
void layout_set_main_h(struct window *);
void layout_set_main_v(struct window *);
void layout_set_tiled(struct window *);
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 },
};
const char *
layout_set_name(u_int layout)
{
return (layout_sets[layout].name);
}
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);
}
void
layout_set_even_h(struct window *w)
{
struct window_pane *wp;
struct layout_cell *lc, *lcnew;
u_int i, n, width, xoff;
layout_print_cell(w->layout_root, __func__, 1);
/* Get number of panes. */
n = window_count_panes(w);
if (n <= 1)
return;
/* How many can we fit? */
width = (w->sx - (n - 1)) / n;
if (width < PANE_MINIMUM)
width = PANE_MINIMUM;
/* Free the old root and construct a new. */
layout_free(w);
lc = w->layout_root = layout_create_cell(NULL);
layout_set_size(lc, w->sx, w->sy, 0, 0);
layout_make_node(lc, LAYOUT_LEFTRIGHT);
/* Build new leaf cells. */
i = xoff = 0;
TAILQ_FOREACH(wp, &w->panes, entry) {
/* Create child cell. */
lcnew = layout_create_cell(lc);
layout_set_size(lcnew, width, w->sy, xoff, 0);
layout_make_leaf(lcnew, wp);
TAILQ_INSERT_TAIL(&lc->cells, lcnew, entry);
i++;
xoff += width + 1;
}
/* Allocate any remaining space. */
if (w->sx > xoff - 1) {
lc = TAILQ_LAST(&lc->cells, layout_cells);
layout_resize_adjust(lc, LAYOUT_LEFTRIGHT, w->sx - (xoff - 1));
}
/* Fix cell offsets. */
layout_fix_offsets(lc);
layout_fix_panes(w, w->sx, w->sy);
layout_print_cell(w->layout_root, __func__, 1);
server_redraw_window(w);
}
void
layout_set_even_v(struct window *w)
{
struct window_pane *wp;
struct layout_cell *lc, *lcnew;
u_int i, n, height, yoff;
layout_print_cell(w->layout_root, __func__, 1);
/* Get number of panes. */
n = window_count_panes(w);
if (n <= 1)
return;
/* How many can we fit? */
height = (w->sy - (n - 1)) / n;
if (height < PANE_MINIMUM)
height = PANE_MINIMUM;
/* Free the old root and construct a new. */
layout_free(w);
lc = w->layout_root = layout_create_cell(NULL);
layout_set_size(lc, w->sx, w->sy, 0, 0);
layout_make_node(lc, LAYOUT_TOPBOTTOM);
/* Build new leaf cells. */
i = yoff = 0;
TAILQ_FOREACH(wp, &w->panes, entry) {
/* Create child cell. */
lcnew = layout_create_cell(lc);
layout_set_size(lcnew, w->sx, height, 0, yoff);
layout_make_leaf(lcnew, wp);
TAILQ_INSERT_TAIL(&lc->cells, lcnew, entry);
i++;
yoff += height + 1;
}
/* Allocate any remaining space. */
if (w->sy > yoff - 1) {
lc = TAILQ_LAST(&lc->cells, layout_cells);
layout_resize_adjust(lc, LAYOUT_TOPBOTTOM, w->sy - (yoff - 1));
}
/* Fix cell offsets. */
layout_fix_offsets(lc);
layout_fix_panes(w, w->sx, w->sy);
layout_print_cell(w->layout_root, __func__, 1);
server_redraw_window(w);
}
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->sx - otherheight > mainheight)
mainheight = w->sx - 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(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(lcrow, LAYOUT_TOPBOTTOM, w->sy - used);
}
/* Fix cell offsets. */
layout_fix_offsets(lc);
layout_fix_panes(w, w->sx, w->sy);
layout_print_cell(w->layout_root, __func__, 1);
server_redraw_window(w);
}
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(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(lccolumn, LAYOUT_LEFTRIGHT, w->sx - used);
}
/* Fix cell offsets. */
layout_fix_offsets(lc);
layout_fix_panes(w, w->sx, w->sy);
layout_print_cell(w->layout_root, __func__, 1);
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;
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);
layout_set_size(lc, (width + 1) * columns - 1,
(height + 1) * rows - 1, 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(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(lcrow, LAYOUT_TOPBOTTOM, w->sy - used);
}
/* Fix cell offsets. */
layout_fix_offsets(lc);
layout_fix_panes(w, w->sx, w->sy);
layout_print_cell(w->layout_root, __func__, 1);
server_redraw_window(w);
}
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