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-rwxr-xr-xdebian/grub.d/05_debian_theme197
1 files changed, 197 insertions, 0 deletions
diff --git a/debian/grub.d/05_debian_theme b/debian/grub.d/05_debian_theme
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+#!/bin/sh
+set -e
+
+# grub-mkconfig helper script.
+# Copyright (C) 2010 Alexander Kurtz <kurtz.alex@googlemail.com>
+#
+# GRUB is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# GRUB is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+
+# Include the GRUB helper library for grub-mkconfig.
+. /usr/share/grub/grub-mkconfig_lib
+
+# We want to work in /boot/grub/ only.
+test -d /boot/grub; cd /boot/grub
+
+# Set the location of a possibly necessary cache file for the background image.
+# NOTE: This MUST BE A DOTFILE to avoid confusing it with user-defined images.
+BACKGROUND_CACHE=".background_cache"
+
+set_default_theme(){
+ case $GRUB_DISTRIBUTOR in
+ Tanglu|Ubuntu|Kubuntu)
+ # Set a monochromatic theme for Tanglu/Ubuntu.
+ echo "${1}set menu_color_normal=white/black"
+ echo "${1}set menu_color_highlight=black/light-gray"
+
+ if [ -e /usr/share/plymouth/themes/default.grub ]; then
+ sed "s/^/${1}/" /usr/share/plymouth/themes/default.grub
+ fi
+ # For plymouth backward compatibility. Can be removed
+ # after xenial.
+ if [ -e /lib/plymouth/themes/default.grub ]; then
+ sed "s/^/${1}/" /lib/plymouth/themes/default.grub
+ fi
+ ;;
+ *)
+ # Set the traditional Debian blue theme.
+ echo "${1}set menu_color_normal=cyan/blue"
+ echo "${1}set menu_color_highlight=white/blue"
+ ;;
+ esac
+}
+
+module_available(){
+ local module
+ for module in "${1}.mod" */"${1}.mod"; do
+ if [ -f "${module}" ]; then
+ return 0
+ fi
+ done
+ return 1
+}
+
+set_background_image(){
+ # Step #1: Search all available output modes ...
+ local output
+ for output in ${GRUB_TERMINAL_OUTPUT}; do
+ if [ "x$output" = "xgfxterm" ]; then
+ break
+ fi
+ done
+
+ # ... and check if we are able to display a background image at all.
+ if ! [ "x${output}" = "xgfxterm" ]; then
+ return 1
+ fi
+
+ # Step #2: Check if the specified background image exists.
+ if ! [ -f "${1}" ]; then
+ return 2
+ fi
+
+ # Step #3: Search the correct GRUB module for our background image.
+ local reader
+ case "${1}" in
+ *.jpg|*.JPG|*.jpeg|*.JPEG) reader="jpeg";;
+ *.png|*.PNG) reader="png";;
+ *.tga|*.TGA) reader="tga";;
+ *) return 3;; # Unknown image type.
+ esac
+
+ # Step #4: Check if the necessary GRUB module is available.
+ if ! module_available "${reader}"; then
+ return 4
+ fi
+
+ # Step #5: Check if GRUB can read the background image directly.
+ # If so, we can remove the cache file (if any). Otherwise the background
+ # image needs to be cached under /boot/grub/.
+ if is_path_readable_by_grub "${1}"; then
+ rm --force "${BACKGROUND_CACHE}.jpeg" \
+ "${BACKGROUND_CACHE}.png" "${BACKGROUND_CACHE}.tga"
+ elif cp "${1}" "${BACKGROUND_CACHE}.${reader}"; then
+ set -- "${BACKGROUND_CACHE}.${reader}" "${2}" "${3}"
+ else
+ return 5
+ fi
+
+ # Step #6: Prepare GRUB to read the background image.
+ if ! prepare_grub_to_access_device "`${grub_probe} --target=device "${1}"`"; then
+ return 6
+ fi
+
+ # Step #7: Everything went fine, print out a message to stderr ...
+ echo "Found background image: ${1}" >&2
+
+ # ... and write our configuration snippet to stdout. Use the colors
+ # desktop-base specified. If we're using a user-defined background, use
+ # the default colors since we've got no idea how the image looks like.
+ # If loading the background image fails, use the default theme.
+ echo "insmod ${reader}"
+ echo "if background_image `make_system_path_relative_to_its_root "${1}"`; then"
+ if [ -n "${2}" ]; then
+ echo " set color_normal=${2}"
+ fi
+ if [ -n "${3}" ]; then
+ echo " set color_highlight=${3}"
+ fi
+ if [ -z "${2}" ] && [ -z "${3}" ]; then
+ echo " true"
+ fi
+ echo "else"
+ set_default_theme " "
+ echo "fi"
+}
+
+# Earlier versions of grub-pc copied the default background image to /boot/grub
+# during postinst. Remove those obsolete images if they haven't been touched by
+# the user. They are still available under /usr/share/images/desktop-base/ if
+# desktop-base is installed.
+while read checksum background; do
+ if [ -f "${background}" ] && [ "x`sha1sum "${background}"`" = "x${checksum} ${background}" ]; then
+ echo "Removing old background image: ${background}" >&2
+ rm "${background}"
+ fi
+done <<EOF
+648ee65dd0c157a69b019a5372cbcfea4fc754a5 debian-blueish-wallpaper-640x480.png
+0431e97a6c661084c59676c4baeeb8c2f602edb8 debian-blueish-wallpaper-640x480.png
+968ecf6696c5638cfe80e8e70aba239526270864 debian-blueish-wallpaper-640x480.tga
+11143e8c92a073401de0b0fd42d0c052af4ccd9b moreblue-orbit-grub.png
+d00d5e505ab63f2d53fa880bfac447e2d3bb197c moreblue-orbit-grub.png
+f5b12c1009ec0a3b029185f6b66cd0d7e5611019 moreblue-orbit-grub.png
+EOF
+
+# Include the configuration of desktop-base if available.
+if [ -f "/usr/share/desktop-base/grub_background.sh" ]; then
+ . "/usr/share/desktop-base/grub_background.sh"
+fi
+
+# First check whether the user has specified a background image explicitly.
+# If so, try to use it. Don't try the other possibilities in that case
+# (#608263).
+if [ -n "${GRUB_BACKGROUND+x}" ]; then
+ set_background_image "${GRUB_BACKGROUND}" || set_default_theme
+ exit 0
+fi
+
+# Next search for pictures the user put into /boot/grub/ and use the first one.
+for background in *.jpg *.JPG *.jpeg *.JPEG *.png *.PNG *.tga *.TGA; do
+ if set_background_image "${background}"; then
+ exit 0
+ fi
+done
+
+# Next try to use the background image and colors specified by desktop-base.
+if set_background_image "${WALLPAPER}" "${COLOR_NORMAL}" "${COLOR_HIGHLIGHT}"; then
+ exit 0
+fi
+
+# If we haven't found a background image yet, use the default from desktop-base.
+case $GRUB_DISTRIBUTOR in
+ Ubuntu|Kubuntu)
+ ;;
+ Tanglu)
+ if set_background_image "/usr/share/images/grub/grub.png"; then
+ exit 0
+ fi
+ ;;
+ *)
+ if set_background_image "/usr/share/images/desktop-base/desktop-grub.png"; then
+ exit 0
+ fi
+ ;;
+esac
+
+# Finally, if all of the above fails, use the default theme.
+set_default_theme