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Add image previews to Joshuto

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Paul-Henri Froidmont 2024-03-02 04:20:38 +01:00
parent 87293b7553
commit e02aaf916c
Signed by: phfroidmont
GPG key ID: BE948AFD7E7873BE
2 changed files with 82 additions and 0 deletions
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79
modules/desktop/default.nix
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@ -91,11 +91,90 @@ in {
};
joshuto = {
enable = true;
package = with pkgs;
writeShellScriptBin "joshuto" ''
export joshuto_wrap_id="$$"
export joshuto_wrap_tmp="$(mktemp -d -t joshuto-wrap-$joshuto_wrap_id-XXXXXX)"
export joshuto_wrap_preview_meta="$joshuto_wrap_tmp/preview-meta"
export ueberzug_pid_file="$joshuto_wrap_tmp/pid"
export ueberzug_img_identifier="preview"
export ueberzug_socket=""
export ueberzug_pid=""
function start_ueberzugpp {
## Adapt Überzug++ options here. For example, remove the '--no-opencv' or set another output method.
${ueberzugpp}/bin/ueberzug layer --no-stdin --pid-file "$ueberzug_pid_file" --no-opencv &>/dev/null
export ueberzug_pid="$(cat "$ueberzug_pid_file")"
export ueberzug_socket=/tmp/ueberzugpp-"$ueberzug_pid".socket
mkdir -p "$joshuto_wrap_preview_meta"
}
function stop_ueberzugpp {
remove_image
${ueberzugpp}/bin/ueberzug cmd -s "$ueberzug_socket" -a exit
kill "$ueberzug_pid"
rm -rf "$joshuto_wrap_tmp"
}
function show_image {
${ueberzugpp}/bin/ueberzug cmd -s "$ueberzug_socket" -a add -i "$ueberzug_img_identifier" -x "$2" -y "$3" --max-width "$4" --max-height "$5" -f "$1" &>/dev/null
}
function remove_image {
${ueberzugpp}/bin/ueberzug cmd -s "$ueberzug_socket" -a remove -i "$ueberzug_img_identifier" &>/dev/null
}
function get_preview_meta_file {
echo "$joshuto_wrap_preview_meta/$(echo "$1" | md5sum | sed 's/ //g')"
}
export -f get_preview_meta_file
export -f show_image
export -f remove_image
if [ -n "$DISPLAY" ] && command -v ${ueberzugpp}/bin/ueberzug > /dev/null; then
trap stop_ueberzugpp EXIT QUIT INT TERM
start_ueberzugpp
fi
${joshuto}/bin/joshuto "$@"
exit $?
'';
settings = {
xdg_open = true;
xdg_open_fork = true;
display = { show_icons = true; };
# preview.preview_protocol = "kitty";
preview.preview_script = ./files/joshuo_preview_file.sh;
preview.preview_shown_hook_script = with pkgs;
writeScript "on_preview_shown" ''
#!/usr/bin/env bash
test -z "$joshuto_wrap_id" && exit 1;
path="$1" # Full path of the previewed file
x="$2" # x coordinate of upper left cell of preview area
y="$3" # y coordinate of upper left cell of preview area
width="$4" # Width of the preview pane (number of fitting characters)
height="$5" # Height of the preview pane (number of fitting characters)
# Find out mimetype and extension
mimetype=$(${file}/bin/file --mime-type -Lb "$path")
extension=$(echo "''${path##*.}" | awk '{print tolower($0)}')
case "$mimetype" in
image/png | image/jpeg)
show_image "$path" $x $y $width $height
;;
*)
remove_image
esac
'';
preview.preview_removed_hook_script =
pkgs.writeScript "on_preview_removed" ''
#!/usr/bin/env bash
test -z "$joshuto_wrap_id" && exit 1;
remove_image'';
};
};
};