79 lines
2.1 KiB
Bash
Executable File
79 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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gversion="0"
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pictureuri="picture-uri"
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validate_config() {
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if [ "$XDG_CURRENT_DESKTOP" != "GNOME" ]; then
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quit "Error: GNOME is not detected. Please install GNOME."
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fi
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if [ -z "$WALLPAPER_DIR" ]; then
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quit "Error: The wallpaper directory environment variable (WALLPAPER_DIR) has not been set."
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fi
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if [ ! -e "$WALLPAPER_DIR" ]; then
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quit "Error: The wallpaper directory \"$WALLPAPER_DIR\" does not exist."
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fi
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if [ ! -d "$WALLPAPER_DIR" ]; then
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quit "Error: The wallpaper directory \"$WALLPAPER_DIR\" is not a directory."
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fi
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if [ ! -r "$WALLPAPER_DIR" ]; then
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quit "Error: The wallpaper directory \"$WALLPAPER_DIR\" is not accessible. "
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fi
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}
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prepare() {
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get_gnome_version
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get_gnome_color_scheme
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set_gnome_color_scheme
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get_wallpaper
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validate_wallpaper
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}
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get_gnome_version() {
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if [ -r "/usr/share/gnome/gnome-version.xml" ]; then
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gversion="$(grep -i "platform" /usr/share/gnome/gnome-version.xml | tr -d " <platform>" | tr -d "/")"
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elif [ -e "/usr/bin/gnome-shell" ] && [ -x "/usr/bin/gnome-shell" ]; then
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gversion="$(gnome-shell --version | cut -d' ' -f3 | cut -d'.' -f1)"
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fi
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}
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get_gnome_color_scheme() {
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if [ "$gversion" -ge 42 ]; then
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style="$(gsettings get org.gnome.desktop.interface color-scheme)"
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fi
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}
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set_gnome_color_scheme() {
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if [ "$style" = "'prefer-dark'" ]; then
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pictureuri="picture-uri-dark"
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fi
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}
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get_wallpaper() {
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selection="$(find "$WALLPAPER_DIR" -type f -name "*.jpg" -o -name "*.png" | shuf -n1)"
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}
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validate_wallpaper() {
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if [ ! -f "$selection" ]; then
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quit "Error: The wallpaper \"$WALLPAPER_DIR\" is not a file."
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fi
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if [ ! -r "$selection" ]; then
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quit "Error: The wallpaper \"$WALLPAPER_DIR\" is not accessible."
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fi
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}
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set_wallpaper() {
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gsettings set org.gnome.desktop.background "$pictureuri" "file://$selection"
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}
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quit() {
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if [[ "$1" = 0 ]]
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then
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exit 0
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else
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printf "%b\n" "$1"
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exit 1
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fi
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}
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validate_config
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prepare
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set_wallpaper
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quit 0
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