#!/bin/sh

# Herbstluftm configuration file.

# Copyright (C) 2014  Simon Ruderich
#
# This file is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this file.  If not, see <http://www.gnu.org/licenses/>.


set -eu


hc() {
    herbstclient "$@"
}
installed() {
    type "$1" >/dev/null 2>&1
}
# $1: timeout
notify() {
    if installed dzen2; then
        read x
        printf '%s\n' "$x" | sed 's/\^/^^/g' \
            | dzen2 -fg blue -bg yellow -y 15 -h 30 -p "$1" &
    elif installed xmessage; then
        # Fallback solution, display first line of stdin.
        read x
        xmessage -timeout "$1" "$x" &
    else
        # Last way to send a "message", create a stupid window layout so I
        # notice something is up and look at the logs.
        hc fullscreen off
        hc floating off
        hc pseudotile off
        hc split vertical 0.1
        hc unlock # or we might not see the changes
    fi
}

# Tell all clients the configuration file was reloaded. Should be the first
# command in the autostart file.
hc emit_hook reload


# KEY BINDINGS

# Use Super (= "Windows") key as modifier which is used for all herbstluftwm
# key bindings.
mod=Mod4

# Remove all existing key bindings.
hc keyunbind --all

# Basic key bindings.
hc keybind $mod-Shift-Return spawn urxvt
hc keybind $mod-Shift-c close
hc keybind $mod-q reload
hc keybind $mod-Shift-q quit
# Lock the screen.
hc keybind $mod-z spawn "$HOME/.xlockscreen" lock

# Run programs/select windows
hc keybind $mod-t spawn rofi -show run
hc keybind $mod-g spawn rofi -show window

# Tag key bindings. Create tags 1 to 0 with bindings to switch and move
# windows to them.
hc rename default 1 2>/dev/null || true
for i in `seq 1 9` 0; do
    hc add "$i"
    hc keybind "$mod-$i" use "$i"
    hc keybind "$mod-Shift-$i" move "$i"
done
# Switch to last active tag.
hc keybind $mod-b use_previous

# Layouting key bindings.
hc keybind $mod-space cycle_layout 1 horizontal max # toggle these layouts
hc keybind $mod-u split vertical   0.5
hc keybind $mod-o split horizontal 0.5
hc keybind $mod-r remove                            # remove a split
# Change window state.
hc keybind $mod-f fullscreen toggle
# Reset fullscreen and layout. Just in case I get confused.
hc keybind $mod-Shift-space chain , fullscreen off , set_layout horizontal

# Focus key bindings.
hc keybind $mod-h focus left
hc keybind $mod-j focus down
hc keybind $mod-k focus up
hc keybind $mod-l focus right
# Move windows.
hc keybind $mod-Shift-h shift left
hc keybind $mod-Shift-j shift down
hc keybind $mod-Shift-k shift up
hc keybind $mod-Shift-l shift right
# Swap top and bottom frame (only works with two frames).
hc keybind $mod-s chain , lock , rotate , rotate , unlock


# MOUSE BINDINGS

# Remove all existing key bindings.
hc mouseunbind --all


# GENERAL SETTINGS

# Necessary for Java so it recognizes herbstluftwm as tiling window manager.
hc set wmname LG3D
# Auto-detect new monitors.
hc set auto_detect_monitors 1


# WINDOW and FRAME SETTINGS

# No border for frames, only for windows.
hc set frame_border_width  0
hc set window_border_width 1
# No gaps between frames or windows.
hc set frame_gap  0
hc set window_gap 0
# Inactive window borders are black, almost invisible on my black screen.
# Active window borders are dark red.
hc set window_border_normal_color '#000000'
hc set window_border_active_color '#990000'
# Transparent background for empty frames.
hc set frame_bg_transparent 1

# Use vertical layout for windows in frames per default.
hc set default_frame_layout 1 # vertical


# LAYOUT

# Run only on startup, not when reloading the config. Thanks to The-Compiler
# in #herbstluftwm on Freenode (2014-01-10 16:26 CET) for the idea to use
# environment variables.
if ! hc getenv HLWMRC_LOADED >/dev/null; then
    hc setenv HLWMRC_LOADED 1

    # Setup my layout: Vertical split with my main terminal window in the top
    # frame, secondary windows in the bottom frame.
    hc split vertical 0.5
fi


# RULES

# Remove all existing rules.
hc unrule --all

# * Do not focus new clients (default).
# * Don't allow clients to toggle fullscreen via EWMH.
# * Move new windows to the frame at the bottom of the screen.
hc rule focus=off \
        ewmhrequests=off \
        index=1

# Focus important windows when they are opened.
hc rule instance=xmessage focus=on

# Move Iceweasel to tag 2.
hc rule instance=Navigator class=Iceweasel tag=2


# After everything is done, allow redrawing of the windows.
hc unlock


# To notify me if set -eu has terminated the script (then this part won't get
# executed).
echo 'hlwm restarted' | notify 1