nixos config

modules/scripts/wallpaper-set.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+# Sets the desktop wallpaper — static images go through hyprpaper's IPC,
+# video files loop via mpvpaper. Only one backend should ever be driving
+# the background at a time, so switching to one always tears the other
+# down first.
+#
+# usage: wallpaper-set <path> [fit_mode] [muted] [speed] [auto_pause]
+#   fit_mode:   cover|contain   (static images only, default cover)
+#   muted:      1|0             (animated only, default 1)
+#   speed:      playback speed  (animated only, default 1.0)
+#   auto_pause: 1|0             (animated only — mpvpaper -p, pauses
+#                                 playback while the wallpaper is hidden
+#                                 behind a fullscreen window, default 1)
+set -euo pipefail
+
+image="${1:?usage: wallpaper-set <path> [fit_mode] [muted] [speed] [auto_pause]}"
+fit_mode="${2:-cover}"
+muted="${3:-1}"
+speed="${4:-1.0}"
+auto_pause="${5:-1}"
+
+case "${image,,}" in
+    *.mp4|*.webm|*.mkv|*.mov|*.gif)
+        # -9: plain SIGTERM doesn't reliably kill mpvpaper (verified live —
+        # it survives pkill -f without -9), which would leave the old
+        # instance still holding the layer-shell surface underneath a new
+        # one. The short sleep gives it a moment to actually release that
+        # surface before a replacement tries to claim it.
+        pkill -9 -f mpvpaper > /dev/null 2>&1 || true
+        sleep 0.3
+
+        mpv_opts="loop-playlist=inf speed=$speed"
+        [ "$muted" = "1" ] && mpv_opts="no-audio $mpv_opts"
+
+        mpvpaper_flags=()
+        [ "$auto_pause" = "1" ] && mpvpaper_flags+=("-p")
+
+        # setsid + disown so mpvpaper (which runs forever, looping the
+        # video) survives after this script exits.
+        setsid mpvpaper "${mpvpaper_flags[@]}" -o "$mpv_opts" '*' "$image" \
+            > /dev/null 2>&1 < /dev/null &
+        disown
+        ;;
+    *)
+        # -9: plain SIGTERM doesn't reliably kill mpvpaper (verified live —
+        # it survives pkill -f without -9), which would leave the old
+        # instance still holding the layer-shell surface underneath a new
+        # one. The short sleep gives it a moment to actually release that
+        # surface before a replacement tries to claim it.
+        pkill -9 -f mpvpaper > /dev/null 2>&1 || true
+        sleep 0.3
+        # This hyprpaper version's IPC only exposes a single `wallpaper`
+        # request (confirmed via `hyprctl hyprpaper --help`) — it loads
+        # and swaps the image in one call. preload/unload/listloaded
+        # requests it used to need don't exist anymore and error out with
+        # "invalid hyprpaper request", which — combined with `set -e` —
+        # was aborting this script before it ever got here.
+        hyprctl hyprpaper wallpaper ",$image,$fit_mode" > /dev/null
+        ;;
+esac