Add wl-backdrop (WIP) --bg-color option

munix

@@ -3,6 +3,7 @@ SCRIPT_PATH=$(dirname $(realpath -s $0))
 MUVM_PATH=$(dirname $(which muvm))
 PASST_PATH=$(dirname $(which passt))
 WL_PROXY_PATH=$(dirname $(which wl-cross-domain-proxy))
+WL_BACKDROP_PATH=$(dirname $(which wl-backdrop))
 HOST_OPENGL_DRIVER=/run/opengl-driver
 : "${MICROVM_DEFAULT_COMMAND:=bash}"
 : "${MUNIX_SYSTEMD_UNITS:="${SCRIPT_PATH}/systemd"}"
@@ -25,6 +26,22 @@ if [ ! -e "$HOST_OPENGL_DRIVER" ]; then
   HOST_OPENGL_DRIVER="$FALLBACK_OPENGL_DRIVER"
 fi
 
+# A little bit cursed: pre-pass to relaunch with new env var..
+BG_COLOR=
+pargs=()
+while [ "$#" -gt 0 ]; do
+  case "$1" in
+    --bg-color) BG_COLOR="$2"; shift 2;;
+    --wl-backdrop-bin-dir) WL_BACKDROP_PATH="$2"; shift 2;;
+    *) pargs+=("$1"); shift;;
+  esac
+done
+if [ "$BG_COLOR" = "" ]; then
+  set -- "${pargs[@]}"
+else
+  exec "$WL_BACKDROP_PATH/wl-backdrop" --background "$BG_COLOR" -- "$(readlink -f "$0")" "${pargs[@]}"
+fi
+
 while [ "$#" -gt 0 ]; do
   case "$1" in
     -u|--uid) MICROVM_UID="$2"; shift 2;;
@@ -44,6 +61,7 @@ while [ "$#" -gt 0 ]; do
     --muvm-bin-dir) MUVM_PATH="$2"; shift 2;;
     --passt-bin-dir) PASST_PATH="$2"; shift 2;;
     --wl-proxy-bin-dir) WL_PROXY_PATH="$2"; shift 2;;
+    --wl-backdrop-bin-dir) shift 2;;
     --) shift 1; MICROVM_COMMAND+=("$@"); break;;
     -*) echo "munix: unknown option: $1" >&2; exit 1;;
     *)
@@ -76,6 +94,11 @@ if [ "$WL_PROXY_PATH" = "" ]; then
   exit 1
 fi
 
+if [ "$WL_BACKDROP_PATH" = "" ]; then
+  echo "munix: wl-backdrop not found, provide a --wl-backdrop-bin-dir or fix \$PATH" >&2
+  exit 1
+fi
+
 if [ ! -e "$HOST_OPENGL_DRIVER" ]; then
   echo "munix: host graphics driver not found, provide a --host-opengl-driver" >&2
   exit 1