android_asset_generator.sh

ImageMagick Asset Generator

printSimpleAndExit(){
	echo "#simple usage ./asset_generator.sh <input.png> <output> <reference_ratio>"
    exit 1
}

printError(){
	echo "Error : $1"
}

resize(){
	echo "$3"
 	temp_file_name="$2.png"
    convert "../$1" -resize "$3%" $temp_file_name
	
	if [ ! -d "$4" ]
	then 
    	mkdir "$4"
	fi 
	cp $temp_file_name "$4/"

	rm "$temp_file_name"

}


# Check if file name is empty.
if [ -n "$1" ]; then
    echo "Using File : '$1'" 
else
    printError "File name can't be empty"
    printSimpleAndExit
fi

# Check if output file name is empty.
if [ -n "$2" ]; then
    echo "To generate drawable files of '$2'"
else
    printError "Output file name can't be empty"
    printSimpleAndExit
fi




#convert $1 -resize 75% "$2.png"
#mkdir "$2"
#cd "$2"
#mkdir drawable-xxhdpi
#cd ..
#cp "$2.png" "$2/drawable-xxhdpi/"

# Create output folder if not exists
if [ ! -d "$2" ]
	then 
    	mkdir "$2"
	fi 

# Goto root of output folder to start resize
cd $2


ratio=1
# Check if output file name is empty.
if [ -n "$3" ]; then
	ratio=$[$3 / 100]
fi

echo "Using Ratio : $ratio"


resize $1 $2 $[100/ratio] drawable-xxxhdpi
resize $1 $2 $[75/ratio] drawable-xxhdpi
resize $1 $2 $[50/ratio] drawable-xhdpi
resize $1 $2 $[33/ratio] drawable-hdpi
resize $1 $2 $[25/ratio] drawable-mdpi

echo "* Exported files successfully *"