#!/bin/sh

## some layouts to order the windows ##

. /tmp/wms_var

FLAG=$1
# root window id.
RID=$(lsw -r)
# focused window.
FW=$(pfw)
# count maped windows.
CMW=$(lsw | wc -l)
# 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))

usage() {
    cat<<EOF
usage:
wms_usher.sh [ -m, -t, -w ]
-m) monucule
-t) tiled
-w) widespread
EOF
}

# all windows at full screen
monocule() {
    for wid in $(lsw); do
	wtp 0 0 $SW $SH $wid
    done
}

# tiling. Master and stack
tiling() {
    # screen widht width gaps added.
    sw=$((RW -  2 * GAP - 2 * BW))
    # master screen height.
    msh=$((RH - 2 * GAP - 2 * BW))
    # stack screen height (( - BW))?
    ssh=$((RH - GAP))
    # stack windows count.
    swcount=$((CMW - 1))
    # master area width.
    mwidth=$((sw * MP / 100 - 2 * BW))
    # master area height.
    mheight=$msh
    # master X coordinate.
    mx=$GAP
    # master Y coordinate.
    my=$GAP
    # stack width.
    swidth=$((sw - mwidth - GAP - 2 * BW))
    # stack height.
    sheight=$((ssh / swcount - GAP - 2 * BW))
    # stack x coordinate.
    sx=$((mwidth + 2 * GAP + 2 * BW))
    # stack y coordinate.
    sy=$GAP

    # put focused window as master
    wtp $mx $my $mwidth $mheight $FW

    # put the rest of the windows in stack
    for wid in $(lsw | grep -v $FW); do
	wtp $sx $sy $swidth $sheight $wid
	# incremental stack Y coordinate.
	sy=$((sy + sheight + GAP + 2 * BW))
    done
}

# widespread
widespread() {
    # windows width.
    ww=$((SW * WP / 100))
    # windows height.
    wh=$((SH * WP / 100))
    # initial X coordinate.
    x=$(((RW - ww) / (CMW * 2)))
    # initial Y coordinate.
    y=$(((RH - wh) / (CMW * 2)))
    # function X value.
    xmax=$(((RW - ww) / CMW))
    # function Y value.
    ymax=$(((RH - wh) / CMW))

    # put windows in cascade
    for wid in $(lsw); do
	wtp $x $y $ww $wh $wid
	# incremental X value.
	x=$((x + xmax))
	# incremental Y value.
	y=$((y + ymax))
    done
}

# if there is a focused window.
if [ -n "$FW" ]; then
    case $FLAG in
	-m)
	    monocule
	    ;;
	-t)
	    tiling
	    ;;	    
	-w)
	    widespread
	    ;;
	*)
	    usage
	    ;;
    esac
fi