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#!/bin/bash
#
# generate a Plasma5 Wallpaper collection from a single image
# Parameter '-b': bitmap file of JPG or PNG format.
# Aspect ratio of the image *must* be 16:9 (1920x1080 px or higher res).
# Parameter 2: name of the wallpaper directory (single word)
# Parameter 3: descriptive long name for the wallpaper (between quotes)
#
# Example:
# ./gen_wallpaper_from_bitmap.sh -p sample.png -d LivingFlame -n "The living flame" -a "John Doe" -e "foo@fum.info"
# ---------------------------------------------------------------------------
CWD=$(cd $(dirname $0); pwd)
# Attribution - this will be used in the wallpaper metadata file:
WP_AUTHOR=${WP_AUTHOR:-"Eric Hameleers"}
WP_EMAIL=${WP_EMAIL:-"alien@slackware.com"}
# More default values:
WP_ROOT=${WP_ROOT:-"$CWD"}
BN=$(basename $0)
SHOWHELP=0
# ---------------------------------------------------------------------------
while getopts "a:b:d:e:hn:r:" Option
do
case $Option in
a ) WP_AUTHOR="${OPTARG}"
;;
b ) WP_BITMAP="${OPTARG}"
;;
d ) WP_DIR="${OPTARG}"
;;
e ) WP_EMAIL="${OPTARG}"
;;
h ) SHOWHELP=1
;;
n ) WP_NAME="${OPTARG}"
;;
r ) WP_ROOT="${OPTARG}"
;;
* ) ;; # DEFAULT
esac
done
# End of option parsing.
shift $(($OPTIND - 1))
# $1 now references the first non option item supplied on the command line
# if one exists.
# ---------------------------------------------------------------------------
if [ $SHOWHELP -eq 1 ]; then
echo "[$BN:] Parameters are:"
echo " -a <author> Name of the wallpaper author, put inbetween quotes."
echo " -b <bitmap> Bitmap file in JPG or PNG format."
echo " Aspect ratio of the image *must* be 16:9"
echo " (1920x1080 px or higher res)."
echo " -d <dirname> Directory name for the wallpaper."
echo " -e <email> Email address of the wallpaper author."
echo " -h This help."
echo " -n <name> Descriptive name for the wallpaper, inbetween quotes."
echo " -r <rootdir> Root directory to create the wallpaper"
echo " directory structure in."
exit 0
fi
# Some house-keeping with regard to the supplied image:
WP_REALBITMAP="$(readlink -f ${WP_BITMAP} 2>&1)"
WP_REALBASE="$(echo $(basename ${WP_REALBITMAP}) |rev |cut -d. -f2- |rev)"
WP_BITMBASE="$(echo $(basename ${WP_BITMAP}) |rev |cut -d. -f2- |rev)"
# If wallpaper name / description were not given, we use the bitmap basename:
WP_DIR=${WP_DIR:-"$WP_REALBASE"}
WP_NAME=${WP_NAME:-"$WP_BITMBASE"}
# Exit immediately if the image file is not found:
if ! readlink -f "${WP_BITMAP}" 1>/dev/null 2>&1 1>/dev/null 2>&1 || ! file "${WP_REALBITMAP}" | grep -q "image data" ; then
echo "-- No wallpaper image found."
exit 1
fi
# Exit if the target directory does not exist or is not writable:
if [ ! -d "${WP_ROOT}" ]; then
echo "-- '${WP_ROOT}' not a directory."
exit 2
fi
# Get the full path:
WP_ROOT="$(cd ${WP_ROOT}; pwd)"
if [ ! -w "${WP_ROOT}" ]; then
echo "-- Directory '${WP_ROOT}' not writable."
exit 2
fi
# Exit if the wallpaper already exists:
if [ -d "${WP_ROOT}/${WP_DIR}" ]; then
echo "-- Wallpaper '${WP_ROOT}/${WP_DIR}' already exists."
exit 3
fi
# Create the wallpaper for Plasma5;
echo "-- Normalizing background image."
# First convert our image into a JPG with known filename:
TMPDIR=$(mktemp -d -t wp_img.XXXXXX)
convert "${WP_REALBITMAP}" ${TMPDIR}/background.jpg
# The toplevel directory WP_DIR is your wallpaper!
# It needs to be placed in /usr/share/wallpapers/ on the target system:
mkdir -p ${WP_ROOT}/${WP_DIR}/contents/images
# Create set of images for common aspect ratios like 16:9, 16:10 and 4:3:
# Aspect Ratio 16:9 :
convert ${TMPDIR}/background.jpg \
-resize 1920x1080 \
${WP_ROOT}/${WP_DIR}/contents/images/1920x1080.jpg
convert ${TMPDIR}/background.jpg \
-resize 5120x2880 \
${WP_ROOT}/${WP_DIR}/contents/images/5120x2880.jpg
# Aspect Ratio 16:10 :
convert ${TMPDIR}/background.jpg \
-resize 5120x - | \
convert - -geometry 1920x1200^ -gravity center -crop 1920x1200+0+0 \
${WP_ROOT}/${WP_DIR}/contents/images/1920x1200.jpg
convert ${TMPDIR}/background.jpg \
-resize 5120x - | \
convert - -geometry 1280x800^ -gravity center -crop 1280x800+0+0 \
${WP_ROOT}/${WP_DIR}/contents/images/1280x800.jpg
# Aspect Ratio 4:3 :
convert ${TMPDIR}/background.jpg \
-resize 5120x - | \
convert - -geometry 1024x768^ -gravity center -crop 1024x768+0+0 \
${WP_ROOT}/${WP_DIR}/contents/images/1024x768.jpg
# Create the required wallpaper screenshot of 400x225 px (16:9 aspect ratio):
convert ${TMPDIR}/background.jpg \
-resize 400x225 \
${WP_ROOT}/${WP_DIR}/contents/screenshot.png
# Add wallpaper description:
cat <<EOT >${WP_ROOT}/${WP_DIR}/metadata.desktop
[Desktop Entry]
Name=${WP_NAME}
X-KDE-PluginInfo-Name=${WP_DIR}
X-KDE-PluginInfo-Author=${WP_AUTHOR}
X-KDE-PluginInfo-Email=${WP_EMAIL}
X-KDE-PluginInfo-License=CC-BY-SA-4.0
EOT
# Inform user:
echo "-- Wallpaper '${WP_NAME}' created in '${WP_ROOT}/${WP_DIR}'."
# Cleanup:
rm -fr $TMPDIR
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