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#!/bin/bash -e

. /lib/grub/grub-mkconfig_lib

set_blue_theme()
{
  cat << EOF
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
EOF
}

# check for usable backgrounds
use_bg=false
if [ "$GRUB_TERMINAL_OUTPUT" = "gfxterm" ] && [ -n "${GRUB_WALLPAPER}" ]; then
  for i in /boot/grub/`basename ${GRUB_WALLPAPER}` ${GRUB_WALLPAPER} ; do
    if is_path_readable_by_grub $i ; then
      bg=$i
      case ${bg} in
        *.png)     reader=png ;;
        *.tga)     reader=tga ;;
        *.jpg|*.jpeg)  reader=jpeg ;;
      esac
      if test -e /boot/grub/${reader}.mod ; then
        echo "Found background image: `basename ${bg}`" >&2
        use_bg=true
        break
      fi
    fi
  done
fi

# set the background if possible
if ${use_bg} ; then
  prepare_grub_to_access_device `${grub_probe} --target=device ${bg}`
  cat << EOF
insmod ${reader}
if background_image `make_system_path_relative_to_its_root ${bg}` ; then
  set color_normal=${GRUB_COLOR_NORMAL}
  set color_highlight=${GRUB_COLOR_HIGHLIGHT}
else
EOF
fi

# otherwise, set the traditional Debian blue theme
if ${use_bg} ; then
  set_blue_theme | sed -e "s/^/  /g"
  echo "fi"
else
  set_blue_theme
fi