makemywall: new interface
We support new ways of reading files that we want to modify/generate: % ./makemywall 1920 1080 myfile1.png myfile2.png % ./makemywall 1920 1080 < mylist.txt % find . -type f -name '*.png' | ./makemywall 1080 1920
Cette révision appartient à :
Parent
8fb0ec040c
révision
7a3cd41678
68
makemywall
68
makemywall
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@ -28,10 +28,19 @@ set -e
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usage() {
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cat << EOH
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Usage: $0 [-s] <source file> <width> <height> : creates a wallpaper
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-s : use a "safer" and slower method to get the background color
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$0 -h : displays this help message
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Example: $0 coolimage.png 1920 1080
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Generate wallpapers to a specified size, given a base picture
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$0 [-vs] width height [picture [picture [...]]]
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$0 -h
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-h : displays this help message
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-s : use a "safer" and slower method to get the background color
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-v : be verbose (set -x)
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Example: $0 1920 1080 coolimage.png
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The following syntax also works:
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find . -type f -name '*.png' | $0 1080 1920
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EOH
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exit ${1:-0}
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}
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@ -40,18 +49,24 @@ die() {
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echo "$1" && exit "${2:-1}"
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}
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if [ "$1" = "-h" ]; then
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usage
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fi
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while getopts ":hvs" _opt; do
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case "$_opt" in
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h) usage ;;
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s) _slow=1 ;;
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v) set -x ;;
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*) usage 1 >&2 ;;
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esac
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done
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if [ "$1" = "-s" ]; then
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shift $((OPTIND-1))
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if [ -n "$_slow" ]; then
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getbg() {
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# We get all hexa codes of all pixels in the picture, and pick the most
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# frequent one... which should be the background color?
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convert "$1" -format %c +dither -depth 5 histogram:info: |
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sort -nr | head -1 | grep -Eo '#[A-F0-9]{6}'
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}
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shift
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else
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getbg() {
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# We get the color of the top-left pixel.
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@ -59,19 +74,30 @@ else
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}
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fi
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if [ $# -ne 3 ]; then
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# We require width & height
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# TODO: maybe auto-detect? seems tricky with dual screen
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if [ $# -lt 2 ]; then
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usage 1 >&2
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fi
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width="$1"
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height="$2"
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shift 2
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[ -r "$1" ] || die "File $1 is not readable!"
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inpfile="$1"
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outfile="$(basename "$inpfile")"
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width="$2"
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height="$3"
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bgcolor="$(getbg "$inpfile")"
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{ if [ -z "$1" ]; then
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# No arguments, we read stdin
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cat -
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else
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for _file in "$@"; do
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printf "%s\n" "$_file"
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done
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fi } |
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while IFS= read -r inpfile; do
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outfile="$(basename "$inpfile")"
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bgcolor="$(getbg "$inpfile")"
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# We use the `-resize ..x..\>` syntax to only shrink pictures. Enlarging is
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# asking for trouble (artifacting, etc.)
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convert "$inpfile" -gravity center -resize "${width}x${height}>" \
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-background "$bgcolor" -extent "${width}x${height}" \
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"${outfile%.*}-${width}x${height}.${outfile##*.}"
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# We use the `-resize ..x..\>` syntax to only shrink pictures. Enlarging is
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# asking for trouble (artifacting, etc.)
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convert "$inpfile" -gravity center -resize "${width}x${height}>" \
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-background "$bgcolor" -extent "${width}x${height}" \
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"${outfile%.*}-${width}x${height}.${outfile##*.}"
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done
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