#!/bin/sh

## send windows to desktop background ##
## it depends of wms_mainrole.sh ##

. /tmp/wms_var

FLAG=$1
# focused window.
FW=$(pfw)
# root window id.
RID=$(lsw -r)
# background window id.
BID=$(lsw -o)
# root width.
RW=$(wattr w $RID)
# root height.
RH=$(wattr h $RID)
# usable screen width.
SW=$((RW - 2 * BW))
# usable screen height.
SH=$((RH - 2 * BW))

# send windows to background
background() {
    # store size and place of the focused widnow in atom.
    atomx WM_IGN="$(wattr xywh $FW) $FW" $FW
    # put it on bottom in window stack order. 
    chwso -l $FW
    # make fullsize.
    wtp 0 0 $SW $SH $FW
    # ignore focused window.
    ignw -s $FW
    # change border color to BC.
    chwb -c $BC $FW
    # focus prev window. 
    wms_mainrole.sh -p
}

# restore windows from background
restore() {
    # unignore. 
    ignw -r $BID
    # restore size an d place.
    wtp $(atomx WM_IGN $BID)
    # put it on top in the window stack order.
    chwso -r $BID
    # delete atom.
    atomx -d WM_IGN $BID
    # focus it.
    wms_mainrole.sh $BID
}

if [ -n "$BID" ]; then
    restore

else
    background
fi