8fb0ec040c
This script was inspired by initial work by jstpcs Additional features: * breaks compatibility to have an easier interface and easier code * can either read the entire picture to get the background color (slow) * or pick the color of the top-left pixel (fast, default) * doesn't scale pictures up to avoid "fuzzy" pictures * now has a proper license (BSD-2)
77 lignes
2,6 Kio
Bash
Fichier exécutable
77 lignes
2,6 Kio
Bash
Fichier exécutable
#!/bin/sh
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# Copyright 2017 jstpcs <jstpcs at protonmail dot com>
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# Copyright 2017 moviuro <moviuro at gmail dot com>
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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EOH
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exit ${1:-0}
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}
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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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if [ "$1" = "-s" ]; 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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convert "$1" -crop 1x1+0+0 -depth 8 txt: | grep -Eo '#[A-F0-9]{6}'
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}
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fi
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if [ $# -ne 3 ]; then
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usage 1 >&2
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fi
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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 "$inpfile")"
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# We use the `-resize ..x..\>` syntax to only shrink pictures. Enlarging is
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# asking for trouble (artifacting, etc.)
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convert "$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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