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| -rwxr-xr-x | makemywall | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/makemywall b/makemywall new file mode 100755 index 0000000..71c06e4 --- /dev/null +++ b/makemywall @@ -0,0 +1,77 @@ +#!/bin/sh + +# Copyright 2017 jstpcs <jstpcs at protonmail dot com> +# Copyright 2017 moviuro <moviuro at gmail dot com> + +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# +# 1. Redistributions of source code must retain the above copyright notice, this +# list of conditions and the following disclaimer. +# +# 2. Redistributions in binary form must reproduce the above copyright notice, +# this list of conditions and the following disclaimer in the documentation +# and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR +# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER +# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, +# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +set -e + +usage() { + cat << EOH +Usage: $0 [-s] <source file> <width> <height> : creates a wallpaper + -s : use a "safer" and slower method to get the background color + $0 -h : displays this help message +Example: $0 coolimage.png 1920 1080 +EOH + exit ${1:-0} +} + +die() { + echo "$1" && exit "${2:-1}" +} + +if [ "$1" = "-h" ]; then + usage +fi + +if [ "$1" = "-s" ]; then + getbg() { + # We get all hexa codes of all pixels in the picture, and pick the most + # frequent one... which should be the background color? + convert "$1" -format %c +dither -depth 5 histogram:info: | + sort -nr | head -1 | grep -Eo '#[A-F0-9]{6}' + } + shift +else + getbg() { + # We get the color of the top-left pixel. + convert "$1" -crop 1x1+0+0 -depth 8 txt: | grep -Eo '#[A-F0-9]{6}' + } +fi + +if [ $# -ne 3 ]; then + usage 1 >&2 +fi + +[ -r "$1" ] || die "File $1 is not readable!" +inpfile="$1" +outfile="$(basename "$inpfile")" +width="$2" +height="$3" +bgcolor="$(getbg "$inpfile")" + +# We use the `-resize ..x..\>` syntax to only shrink pictures. Enlarging is +# asking for trouble (artifacting, etc.) +convert "$inpfile" -gravity center -resize "${width}x${height}>" \ + -background "$bgcolor" -extent "${width}x${height}" \ + "${outfile%.*}-${width}x${height}.${outfile##*.}" |