dpi resource from xxxhdpi

android_res_gen.sh

# require ImageMagick
# usage: find . -type f -name '*.png' | xargs android_res_gen.sh

# mkdir
[ ! -d xxxhdpi ] && mkdir xxxhdpi
[ ! -d xxhdpi ] && mkdir xxhdpi
[ ! -d xhdpi ] && mkdir xhdpi
[ ! -d hdpi ] && mkdir hdpi
[ ! -d mdpi ] && mkdir mdpi

for path in $*
do
echo 'convert... ' $path
	
file="${path##*/}"
dir="${path%%/${file}}"
if test dir = ./xxxhdpi ||
   test dir = ./xxhdpi ||
   test dir = ./xhdpi ||
   test dir = ./hdpi ||
   test dir = ./mdpi; then
	echo 'skip... ' $path
	continue
fi

# ImageMagick
cp $path xxxhdpi/$file #xxxhdpi
convert $path -resize '75%' ./xxhdpi/$file ##xxhdpi
convert $path -resize '50%' ./xhdpi/$file  #xhdpi
convert $path -resize '37.5%' ./hdpi/$file #hdpi
convert $path -resize '25%' ./mdpi/$file   #mdpi

echo 'done... ' $path
done