#!/bin/bash

if [ $# -lt 2 ]; then
  echo "Usage:"
  echo "  e_bggen.sh source_image_file.jpg/.png output_file.edj [-q N] [-c]"
  echo ""
  echo "where 'source_image_file.jpg/.png' is the source image,"
  echo "'output_file.edj' is the output file to produce and then optional"
  echo "options of -q N for quality (where N is between 1 and 100), or the"
  echo "-c option which forces compressed lossless encoding."
  exit -1
fi

BG=$1
OUT=$2

# internal values
QUAL=90
ENC="LOSSY $QUAL"

# options
if [ "$3" = "-q" ]; then
  QUAL="$4"
  ENC="LOSSY $QUAL"
fi
if [ "$3" = "-c" ]; then
  ENC="COMP"
fi
if [ ! -f "$BG" ]; then
  exit
fi
W=`identify "$BG" | awk '{print $3;}' | awk -F x '{printf $1;}'`
H=`identify "$BG" | awk '{print $3;}' | awk -F x '{printf $2;}'`
if [ -z "$W" ]; then
  echo "Not image $BG"
  exit
fi
if [ -z "$H" ]; then
  echo "Not image $BG"
  exit
fi
WW=$W.0
HH=$H.0
echo "WH: $WW $HH"
echo "scale=8;" > bcf
echo "x=$W/$H;" >> bcf
echo "x;" >> bcf
echo "quit" >> bcf
ASP=`bc -q bcf`
rm bcf
echo "ASP: $ASP"

cat <<EOF > t.edc
images { image: "$BG" $ENC; } collections { group { name: "e/desktop/background";
parts { part { name: "background"; description { state: "default" 0.0;
aspect: $ASP $ASP; aspect_preference: NONE;
image { normal: "$BG"; scale_hint: STATIC; } } } } } }
EOF

edje_cc -v t.edc $OUT
rm t.edc