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#!/bin/ash
# Wrapper around fbsplash to facilitate positioning images.
# Contains two different modes
# 1) Just display an image centered, or in one of the four
# corners. --center, --tl, --tr, --bl, --br
# 2) Display startup icons that signal initialization progress
# which will turn from inactive to active.
# Needs a directory tree where you have two dirs named
# inactive and active, with identically named *.ppm files
# in them. Call with "--reset [dir], so all images from
# the inactive subdir will be drawn in alphabetical order.
# Call with --icon [dir/active/xxx.ppm] to draw that
# specific icon in its active state. Will assume the
# screen stays intact between calls.
ICON_SIZE=64
unset mode ppm base index
count=0
while [ "$#" -gt 0 ]; do
case "$1" in
--center|--reset|--icon|--tl|--bl|--tr|--br)
mode="${1:2}"
;;
*) break ;;
esac
shift
done
ppm="$1"
shift
# remaining args go to fbsplash, except for icon and reset modes
if [ "$mode" = "reset" ]; then
base="$ppm/inactive"
elif [ "$mode" = "icon" ]; then
base="${ppm%/*}"
base="${base%/*}"
base="${base:-.}/inactive"
globname() (
IFS=
set -- $1
printf "%s" "$1"
)
ppm="$( globname "$ppm" )"
fi
if [ -n "$base" ]; then
# Need this for either reset (draw all as inactive), or icon (know how many icons)
if ! [ -d "$base" ]; then
echo "$base is not a directory" >&2
exit 1
fi
count=0
for i in "$base"/*.ppm*; do
count=$(( count + 1 ))
done
fi
draw () {
local ppm="$3"
local img_left="$1"
local img_top="$2"
shift 3
# See ift's an actual file
if ! [ -s "$ppm" ]; then
echo "$ppm not found" >&2
exit 1
fi
local cfg="/tmp/fbsplash.$$"
# just checking if nothing too weird is set
if [ -n "$img_left" ] && [ -n "$img_top" ] \
&& [ "$img_left" -ge 0 ] && [ "$img_left" -lt 8096 ] \
&& [ "$img_top" -ge 0 ] && [ "$img_top" -lt 8096 ]; then
printf "IMG_TOP=%d\nIMG_LEFT=%d\n" \
"$img_top" "$img_left" \
> "$cfg"
fbsplash "$@" -i "$cfg" -s "$ppm"
ret=$?
rm -f -- "$cfg"
elif [ "$mode" = "center" ]; then
# otherwise just use top left and be done with it
fbsplash "$@" -s "$ppm"
ret=$?
fi
return $ret
}
# Draw
screen_size="$(fbset | awk '$1 == "geometry" {print $2 " " $3; exit}')"
screen_width="${screen_size%% *}"
screen_height="${screen_size#* }"
if [ "$count" -gt 0 ]; then
# This is one of the icon modes
if ! [ "$screen_width" -gt 0 ] || ! [ "$screen_height" -gt 0 ]; then
echo "Unknown screen size ($screen_size)" >&2
exit 1
fi
xmargin=$(( screen_width - (ICON_SIZE * count) ))
if [ "$xmargin" -gt 300 ] && [ "$count" -gt 1 ]; then
xmargin=$(( (xmargin - 100) / (count - 1) ))
[ "$xmargin" -gt 24 ] && xmargin=24
else
xmargin=0
fi
xpos=$(( ( screen_width - (ICON_SIZE * count) - (xmargin * (count - 1)) ) / 2 ))
ypos=$(( screen_height - 256 ))
# Loop over all inactive icons
unset wantfile
if [ "$mode" = "icon" ]; then
wantfile="$( basename "$ppm" .gz )"
fi
for f in "$base"/*.ppm*; do
if [ "$mode" = "reset" ]; then
draw "$xpos" "$ypos" "$f"
elif [ "$( basename "$f" .gz )" = "$wantfile" ]; then
draw "$xpos" "$ypos" "$ppm"
fi
xpos=$(( xpos + ICON_SIZE + xmargin ))
done
else
# Normal mode
# getimgsize
if ! [ -s "${ppm}" ]; then
ppm="${ppm}.gz"
fi
if [ "${ppm%.gz}" != "${ppm}" ]; then
ppm_size="$( < "$ppm" zcat | head -n 5 | grep -v '^#' | sed -n 2p )"
else
ppm_size="$( < "$ppm" head -n 5 | grep -v '^#' | sed -n 2p )"
fi
if [ -z "$ppm_size" ]; then
echo "Invalid ppm? Could not extract dimensions" >&2
exit 1
fi
ppm_width="${ppm_size%% *}"
ppm_height="${ppm_size#* }"
ppm_height="${ppm_height%% *}" # make sure nothing weird is trailing
# pos
img_left=0
img_top=0
case "$mode" in
center|tr|br) img_left="$(( screen_width - ppm_width ))" ;;
esac
case "$mode" in
center|bl|br) img_top="$(( screen_height - ppm_height ))" ;;
esac
if [ "$mode" = "center" ]; then
img_left=$(( img_left / 2 ))
img_top=$(( img_top / 2 ))
fi
draw "$img_left" "$img_top" "$ppm" "$@"
fi
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