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#!/usr/bin/env bash
# a q3-like (or yakuake-like) terminal for arbitrary applications.
#
# this lets a new monitor called "q3terminal" scroll in from the top into the
# current monitor. There the "scratchpad" will be shown (it will be created if
# it doesn't exist yet). If the monitor already exists it is scrolled out of
# the screen and removed again.
#
# Warning: this uses much resources because herbstclient is forked for each
# animation step.
#
# If a tag name is supplied, this is used instead of the scratchpad
tag="${1:-scratchpad}"
hc() { "${herbstclient_command[@]:-herbstclient}" "$@" ;}
termwidth_percent=${WIDTH_PERC:-100}
mrect=( $(hc monitor_rect -p "" ) )
termwidth=$(( (${mrect[2]} * termwidth_percent) / 100 ))
termheight=${HEIGHT_PIXELS:-400}
rect=(
$termwidth
$termheight
$(( ${mrect[0]} + (${mrect[2]} - termwidth) / 2 ))
$(( ${mrect[1]} - termheight ))
)
y_line=${mrect[1]}
hc add "$tag"
monitor=dropdown
exists=false
if ! hc add_monitor $(printf "%dx%d%+d%+d" "${rect[@]}") \
"$tag" $monitor 2> /dev/null ; then
exists=true
else
# remember which monitor was focused previously
hc chain \
, new_attr string monitors.by-name."$monitor".my_prev_focus \
, substitute M monitors.focus.index \
set_attr monitors.by-name."$monitor".my_prev_focus M
fi
update_geom() {
local geom=$(printf "%dx%d%+d%+d" "${rect[@]}")
hc move_monitor "$monitor" $geom
}
steps=${ANIMATION_STEPS:-1}
interval=${ANIMATION_INTERVAL:-0.01}
animate() {
progress=( "$@" )
for i in "${progress[@]}" ; do
rect[3]=$((y_line - (i * termheight) / steps))
update_geom
sleep "$interval"
done
}
show() {
hc lock
hc raise_monitor "$monitor"
hc focus_monitor "$monitor"
hc unlock
hc lock_tag "$monitor"
animate $(seq $steps -1 0)
}
hide() {
rect=( $(hc monitor_rect "$monitor" ) )
local tmp=${rect[0]}
rect[0]=${rect[2]}
rect[2]=${tmp}
local tmp=${rect[1]}
rect[1]=${rect[3]}
rect[3]=${tmp}
termheight=${rect[1]}
y_line=${rect[3]} # height of the upper screen border
animate $(seq 0 +1 $steps)
# if q3terminal still is focused, then focus the previously focused monitor
# (that mon which was focused when starting q3terminal)
hc substitute M monitors.by-name."$monitor".my_prev_focus \
and + compare monitors.focus.name = "$monitor" \
+ focus_monitor M
hc remove_monitor "$monitor"
}
[ $exists = true ] && hide || show
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