set up vifm image preview

users/rouven/modules/vifm/vifm-sixel

@@ -0,0 +1,55 @@
+#!/run/current-system/sw/bin/bash
+
+[ -d "$HOME/.cache/vifm" ] || mkdir -p "$HOME/.cache/vifm"
+
+# $1 action
+action="$1"
+# $2 panel width
+# $3 panel height
+panel_width=$2
+panel_height=$3
+cell_width=10
+cell_height=18
+width=$((panel_width*cell_width))
+height=$((panel_height*cell_height))
+# $4 image path
+image_file="$4"
+background=black
+
+PCACHE="$HOME/.cache/vifm/thumbnail.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$PWD/$image_file")" | sha256sum | awk '{print $1}')"
+
+cleanup() {
+		printf '\33[s\33[5A\33[2K\33[u'
+		clear
+		exit 0
+}
+
+case "$action" in
+	"clear")
+		cleanup
+		;;
+	"draw")
+	img2sixel -S --width=$width $image_file
+		;;
+	"video")
+		[ ! -f "${PCACHE}.jpg" ] && \
+		ffmpegthumbnailer -i "$4" -o "${PCACHE}.jpg" -s 0 -q 5
+	img2sixel --width=$width ${PCACHE}.jpg
+		;;
+	"epub")
+		[ ! -f "${PCACHE}.jpg" ] && \
+		epub-thumbnailer "$image_file" "$PCACHE" 1024
+	img2sixel --width=$width --height=$height ${PCACHE}.jpg
+		;;
+	"pdf")
+		[ ! -f "${PCACHE}.jpg" ] && \
+		pdftoppm -jpeg -f 1 -singlefile "$image_file" "$PCACHE"
+	img2sixel --height=$height ${PCACHE}.jpg
+		;;
+	"font")
+		[ ! -f "${PCACHE}.jpg" ] && \
+		fontpreview -i "$image_file" -o "${PCACHE}.jpg"
+	img2sixel --width=$width --height=$height ${PCACHE}.jpg
+		;;
+	*)
+esac