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tmux-layout-dwindle
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tmux-layout-dwindle
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#!/bin/sh -eu
#
# Usage: tmux-layout-dwindle [tblrhvsc]...
#
# Arranges panes in the current window into Binary Space Partitions of
# dwindling size towards a corner of the screen (tl, tr, bl, br) along
# a straight line (c) or spiral trajectory (s) while laying out branch
# panes either vertically (v) or horizontally (h) to produce one of 16
# possible orientations, illustrated below, of which "brvc" is default.
#
# Inspired by the dwindle and spiral layout concepts by Niki Yoshiuchi
# in dwm's fibonacci patch <http://dwm.suckless.org/patches/fibonacci>.
#
#
#
#
# oooo ooo .ooooo.
# `88. .8' d88' `"Y8
# `88..8' 888
# `888' 888 .o8
# `8' `Y8bod8P'
#
#
#
# vertical corner
#
#
#
# tlvc trvc
#
# +--+--+-----+-----------+ +-----------+-----+--+--+
# |\\|5 | | | | | | 5|//|
# +--+--+ 3 | | | | 3 +--+--+
# | 4 | | | | | | 4 |
# +-----+-----+ 1 | | 1 +-----+-----+
# | | | | | |
# | 2 | | | | 2 |
# | | | | | |
# +-----------+-----------+ +-----------+-----------+
#
# +-----------+-----------+ +-----------+-----------+
# | | | | | |
# | 2 | | | | 2 |
# | | | | | |
# +-----+-----+ 1 | | 1 +-----+-----+
# | 4 | | | | | | 4 |
# +--+--+ 3 | | | | 3 +--+--+
# |//|5 | | | | | | 5|\\|
# +--+--+-----+-----------+ +-----------+-----+--+--+
#
# blvc brvc
#
#
#
#
#
# oooo ooo .oooo.o
# `88. .8' d88( "8
# `88..8' `"Y88b.
# `888' o. )88b
# `8' 8""888P'
#
#
#
# vertical spiral
#
#
#
# tlvs trvs
#
# +-----+-----+-----------+ +-----------+-----+-----+
# | | 4 | | | | 4 | |
# | 3 +--+--+ | | +--+--+ 3 |
# | |\\|5 | | | | 5|//| |
# +-----+--+--+ 1 | | 1 +--+--+-----+
# | | | | | |
# | 2 | | | | 2 |
# | | | | | |
# +-----------+-----------+ +-----------+-----------+
#
# +-----------+-----------+ +-----------+-----------+
# | | | | | |
# | 2 | | | | 2 |
# | | | | | |
# +-----+--+--+ 1 | | 1 +--+--+-----+
# | |//|5 | | | | 5|\\| |
# | 3 +--+--+ | | +--+--+ 3 |
# | | 4 | | | | 4 | |
# +-----+-----+-----------+ +-----------+-----+-----+
#
# blvs brvs
#
#
#
# oooo
# `888
# 888 .oo. .ooooo.
# 888P"Y88b d88' `"Y8
# 888 888 888
# 888 888 888 .o8
# o888o o888o `Y8bod8P'
#
#
#
# horizontal corner
#
#
#
# tlhc trhc
#
# +-----+-----+-----------+ +-----------+-----+-----+
# | \\\ | | | | | | /// |
# +-----+ 4 | | | | 4 +-----+
# | 5 | | | | | | 5 |
# +-----+-----+ 2 | | 2 +-----+-----+
# | | | | | |
# | 3 | | | | 3 |
# | | | | | |
# +-----------+-----------+ +-----------+-----------+
# | | | |
# | | | |
# | | | |
# | 1 | | 1 |
# | | | |
# | | | |
# | | | |
# +-----------------------+ +-----------------------+
#
# +-----------------------+ +-----------------------+
# | | | |
# | | | |
# | | | |
# | 1 | | 1 |
# | | | |
# | | | |
# | | | |
# +-----------+-----------+ +-----------+-----------+
# | | | | | |
# | 3 | | | | 3 |
# | | | | | |
# +-----+-----+ 2 | | 2 +-----+-----+
# | 5 | | | | | | 5 |
# +-----+ 4 | | | | 4 +-----+
# | /// | | | | | | \\\ |
# +-----+-----+-----------+ +-----------+-----+-----+
#
# blhc brhc
#
#
#
# oooo
# `888
# 888 .oo. .oooo.o
# 888P"Y88b d88( "8
# 888 888 `"Y88b.
# 888 888 o. )88b
# o888o o888o 8""888P'
#
#
#
# horizontal spiral
#
#
#
# tlhs trhs
#
# +-----------+-----------+ +-----------+-----------+
# | | | | | |
# | 3 | | | | 3 |
# | | | | | |
# +-----+-----+ 2 | | 2 +-----+-----+
# | | \\\ | | | | /// | |
# | 4 +-----+ | | +-----+ 4 |
# | | 5 | | | | 5 | |
# +-----+-----+-----------+ +-----------+-----+-----+
# | | | |
# | | | |
# | | | |
# | 1 | | 1 |
# | | | |
# | | | |
# | | | |
# +-----------------------+ +-----------------------+
#
# +-----------------------+ +-----------------------+
# | | | |
# | | | |
# | | | |
# | 1 | | 1 |
# | | | |
# | | | |
# | | | |
# +-----+-----+-----------+ +-----------+-----+-----+
# | | 5 | | | | 5 | |
# | 4 +-----+ | | +-----+ 4 |
# | | /// | | | | \\\ | |
# +-----+-----+ 2 | | 2 +-----+-----+
# | | | | | |
# | 3 | | | | 3 |
# | | | | | |
# +-----------+-----------+ +-----------+-----------+
#
# blhs brhs
#
#
#
#
# Written in 2016 by Suraj N. Kurapati <https://github.com/sunaku>
# Documented at <https://sunaku.github.io/tmux-layout-dwindle.html>
# parse any orientation flags specified among the command-line arguments
case "$*" in
(*t*) corner_tb=+ spiral_tb= ;; # top
(*b*|*) corner_tb= spiral_tb=+ ;; # bottom
esac
case "$*" in
(*l*) corner_lr=+ spiral_lr= ;; # left
(*r*|*) corner_lr= spiral_lr=+ ;; # right
esac
case "$*" in
(*h*) modulo_hv=0 is_vertical=false ;; # horizontal
(*v*|*) modulo_hv=1 is_vertical=true ;; # vertical
esac
case "$*" in
(*s*) is_spiral=true ;; # spiral
(*c*|*) is_spiral=false ;; # corner
esac
# gather information about the current state of the window and its panes
set -- $(tmux list-panes -F '#{pane_id}')
selected_pane=$(tmux display-message -p '#{pane_id}')
historic_pane=$(tmux last-pane 2>/dev/null \;\
display-message -p '#{pane_id}' \;\
last-pane) ||: # exit 1 - no last pane
window_height=$(tmux display-message -p '#{window_height}')
# execute all tmux commands in one shot to avoid flickering and slowness
exec tmux $({
# flatten current layout, stacking all panes vertically like pancakes
echo select-layout even-vertical
# transform pane stack into binary space partitions of dwindling size
count=1
for pane_id; do
if [ $count -eq $# ]; then
break # skip last pane because .+1 wraps around to the first pane
elif [ $(( count % 2 )) -eq $modulo_hv ]; then
move_h=+
if $is_spiral && [ $(( count % 5 )) -gt 2 ]
then move_b=$spiral_lr
else move_b=$corner_lr
fi
else
move_h=
if $is_spiral && [ $(( count % 5 )) -gt 2 ]
then move_b=$spiral_tb
else move_b=$corner_tb
fi
fi
echo resize-pane -t $pane_id -y $window_height # make room for move
echo select-pane -t $pane_id # for relative pane addressing in move
echo move-pane -d -s .+1 -t . ${move_h:+-h} ${move_b:+-b} # move it
count=$(( count + 1 ))
done
# divide available space evenly among panes (binary space partitions)
branch_height=$window_height
count=1
for pane_id; do
if [ $count -eq $# ] && ! $is_vertical; then
break # skip last pane because it will already be sized correctly
elif [ $(( count % 2 )) -eq 1 ]; then
# every other pane is a branch in the binary space partition tree
parent_height=$branch_height
branch_height=$(( branch_height / 2 ))
if $is_vertical
then resize_y=$parent_height
else resize_y=$branch_height
fi
echo resize-pane -t $pane_id -y $resize_y
fi
count=$(( count + 1 ))
done
# restore pane selection back to how it was before we did any of this
test -n "$historic_pane" && echo select-pane -t $historic_pane
echo select-pane -t $selected_pane
} | sed 's/$/ ;/')