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#!/usr/bin/env bash
readonly ID_PREVIEW="preview"
#AUTO_REMOVE="yes"
# By enabling this option the script will remove the preview file after it is drawn
# and by doing so the preview will always be up-to-date with the file.
# This however, requires more CPU and therefore affects the overall performance.
if [ -e "$FIFO_UEBERZUG" ]; then
if [[ "$1" == "draw" ]]; then
declare -p -A cmd=([action]=add [identifier]="$ID_PREVIEW"
[x]="$2" [y]="$3" [width]="$4" [height]="$5" \
[path]="${PWD}/$6") \
> "$FIFO_UEBERZUG"
elif [[ "$1" == "videopreview" ]]; then
echo -e "Loading preview..\nFile: $6"
[[ ! -d "/tmp${PWD}/$6/" ]] && mkdir -p "/tmp${PWD}/$6/"
[[ ! -f "/tmp${PWD}/$6.png" ]] && ffmpegthumbnailer -i "${PWD}/$6" -o "/tmp${PWD}/$6.png" -s 0 -q 10
declare -p -A cmd=([action]=add [identifier]="$ID_PREVIEW"
[x]="$2" [y]="$3" [width]="$4" [height]="$5" \
[path]="/tmp${PWD}/$6.png") \
> "$FIFO_UEBERZUG"
elif [[ "$1" == "gifpreview" ]]; then
echo -e "Loading preview..\nFile: $6"
[[ ! -d "/tmp${PWD}/$6/" ]] && mkdir -p "/tmp${PWD}/$6/" && convert -coalesce "${PWD}/$6" "/tmp${PWD}/$6/$6.png"
for frame in $(ls -1 /tmp${PWD}/$6/$6*.png | sort -V); do
declare -p -A cmd=([action]=add [identifier]="$ID_PREVIEW"
[x]="$2" [y]="$3" [width]="$4" [height]="$5" \
[path]="$frame") \
> "$FIFO_UEBERZUG"
# Sleep between frames to make the animation smooth.
sleep .07
done
elif [[ "$1" == "pdfpreview" ]]; then
echo -e "Loading preview..\nFile: $6"
[[ ! -d "/tmp${PWD}/$6/" ]] && mkdir -p "/tmp${PWD}/$6/"
[[ ! -f "/tmp${PWD}/$6.png" ]] && pdftoppm -png -singlefile "$6" "/tmp${PWD}/$6"
declare -p -A cmd=([action]=add [identifier]="$ID_PREVIEW"
[x]="$2" [y]="$3" [width]="$4" [height]="$5" \
[path]="/tmp${PWD}/$6.png") \
> "$FIFO_UEBERZUG"
elif [[ "$1" == "clear" ]]; then
declare -p -A cmd=([action]=remove [identifier]="$ID_PREVIEW") \
> "$FIFO_UEBERZUG"
[[ ! -z $AUTO_REMOVE ]] && [[ -f "/tmp${PWD}/$6.png" ]] && rm -f "/tmp${PWD}/$6.png"
[[ ! -z $AUTO_REMOVE ]] && [[ -d "/tmp${PWD}/$6/" ]] && rm -rf "/tmp${PWD}/$6/"
fi
fi
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