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/* $OpenBSD$ */
/*
* 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(w);
layout_fix_panes(w);
layout_print_cell(w->layout_root, __func__, 1);
window_resize(w, lc->sx, lc->sy, -1, -1);
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, *lcother, *lcchild;
u_int n, mainh, otherh, sx, sy;
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 */
/* Find available height - take off one line for the border. */
sy = w->sy - 1;
/* Get the main pane height and work out the other pane height. */
mainh = options_get_number(w->options, "main-pane-height");
if (mainh + PANE_MINIMUM >= sy) {
if (sy <= PANE_MINIMUM + PANE_MINIMUM)
mainh = PANE_MINIMUM;
else
mainh = sy - PANE_MINIMUM;
otherh = PANE_MINIMUM;
} else {
otherh = options_get_number(w->options, "other-pane-height");
if (otherh == 0)
otherh = sy - mainh;
else if (otherh > sy || sy - otherh < mainh)
otherh = sy - mainh;
else
mainh = sy - otherh;
}
/* Work out what width is needed. */
sx = (n * (PANE_MINIMUM + 1)) - 1;
if (sx < w->sx)
sx = w->sx;
/* Free old tree and create a new root. */
layout_free(w);
lc = w->layout_root = layout_create_cell(NULL);
layout_set_size(lc, sx, mainh + otherh + 1, 0, 0);
layout_make_node(lc, LAYOUT_TOPBOTTOM);
/* Create the main pane. */
lcmain = layout_create_cell(lc);
layout_set_size(lcmain, sx, mainh, 0, 0);
layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);
/* Create the other pane. */
lcother = layout_create_cell(lc);
layout_set_size(lcother, sx, otherh, 0, 0);
if (n == 1) {
wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
layout_make_leaf(lcother, wp);
TAILQ_INSERT_TAIL(&lc->cells, lcother, entry);
} else {
layout_make_node(lcother, LAYOUT_LEFTRIGHT);
TAILQ_INSERT_TAIL(&lc->cells, lcother, entry);
/* Add the remaining panes as children. */
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp == TAILQ_FIRST(&w->panes))
continue;
lcchild = layout_create_cell(lcother);
layout_set_size(lcchild, PANE_MINIMUM, otherh, 0, 0);
layout_make_leaf(lcchild, wp);
TAILQ_INSERT_TAIL(&lcother->cells, lcchild, entry);
}
layout_spread_cell(w, lcother);
}
/* Fix cell offsets. */
layout_fix_offsets(w);
layout_fix_panes(w);
layout_print_cell(w->layout_root, __func__, 1);
window_resize(w, lc->sx, lc->sy, -1, -1);
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, *lcother, *lcchild;
u_int n, mainw, otherw, sx, sy;
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 */
/* Find available width - take off one line for the border. */
sx = w->sx - 1;
/* Get the main pane width and work out the other pane width. */
mainw = options_get_number(w->options, "main-pane-width");
if (mainw + PANE_MINIMUM >= sx) {
if (sx <= PANE_MINIMUM + PANE_MINIMUM)
mainw = PANE_MINIMUM;
else
mainw = sx - PANE_MINIMUM;
otherw = PANE_MINIMUM;
} else {
otherw = options_get_number(w->options, "other-pane-width");
if (otherw == 0)
otherw = sx - mainw;
else if (otherw > sx || sx - otherw < mainw)
otherw = sx - mainw;
else
mainw = sx - otherw;
}
/* Work out what height is needed. */
sy = (n * (PANE_MINIMUM + 1)) - 1;
if (sy < w->sy)
sy = w->sy;
/* Free old tree and create a new root. */
layout_free(w);
lc = w->layout_root = layout_create_cell(NULL);
layout_set_size(lc, mainw + otherw + 1, sy, 0, 0);
layout_make_node(lc, LAYOUT_LEFTRIGHT);
/* Create the main pane. */
lcmain = layout_create_cell(lc);
layout_set_size(lcmain, mainw, sy, 0, 0);
layout_make_leaf(lcmain, TAILQ_FIRST(&w->panes));
TAILQ_INSERT_TAIL(&lc->cells, lcmain, entry);
/* Create the other pane. */
lcother = layout_create_cell(lc);
layout_set_size(lcother, otherw, sy, 0, 0);
if (n == 1) {
wp = TAILQ_NEXT(TAILQ_FIRST(&w->panes), entry);
layout_make_leaf(lcother, wp);
TAILQ_INSERT_TAIL(&lc->cells, lcother, entry);
} else {
layout_make_node(lcother, LAYOUT_TOPBOTTOM);
TAILQ_INSERT_TAIL(&lc->cells, lcother, entry);
/* Add the remaining panes as children. */
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp == TAILQ_FIRST(&w->panes))
continue;
lcchild = layout_create_cell(lcother);
layout_set_size(lcchild, otherw, PANE_MINIMUM, 0, 0);
layout_make_leaf(lcchild, wp);
TAILQ_INSERT_TAIL(&lcother->cells, lcchild, entry);
}
layout_spread_cell(w, lcother);
}
/* Fix cell offsets. */
layout_fix_offsets(w);
layout_fix_panes(w);
layout_print_cell(w->layout_root, __func__, 1);
window_resize(w, lc->sx, lc->sy, -1, -1);
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(w);
layout_fix_panes(w);
layout_print_cell(w->layout_root, __func__, 1);
window_resize(w, lc->sx, lc->sy, -1, -1);
notify_window("window-layout-changed", w);
server_redraw_window(w);
}