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# Image Utilities
# Concatenate image vertically
image.vertical() {
if [ ! $# = 0 ]; then
echo 'Usage: image.vertical input1.jpg input2.jpg'
return 0
fi
ext=${1##*.}
convert "$@" -append $(basename -s .$ext $1)-$(basename -s .$ext ${@: -1}).${format:-$ext}
}
# Concatenate image horizontally
image.horizontal() {
if [ ! $# = 0 ]; then
echo 'Usage: image.horizontal input1.jpg input2.jpg'
return 0
fi
ext=${1##*.}
convert "$@" +append output.$ext
}
# Export image with data url format
image.from_data_url() {
[ -z "$1" ] && echo File name needed && return 1
xsel -ob | sed -E 's/^.+,//' | base64 -d >$1
identify $1
}
# Resize image
image.resize() {
if [ ! $# = 2 ]; then
echo 'Usage: image.resize INPUT.jpg 80%'
return 0
fi
ext=${1##*.}
echo OUTPUT: output.$ext
convert -resize $2 $1 output.$ext
}
# Upload image to vps
# Usage:
# image.upload foo.png
image.upload() {
local month=$(date +%Y-%m)
local filename=${2:-$(date +"%d_%Hh%Mm%Ss").${1##*.}}
local fpath='$HOME/data/s3.photos/'$month
cat $1 | ssh vps "mkdir -p $fpath && cat >$fpath/$filename" && \
echo https://topo.tw/photos/$month/$filename || \
echo Fail to upload
}
# Create an image contains text
image.text() {
convert \
-size 230x130 \
-background lightblue \
-font Noto-Sans-Bold \
-pointsize 25 \
-fill black \
-gravity Center \
caption:"${1:=foo}" \
-flatten \
"${2:=foo}".jpg
}
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