Added krawall for wallpaper switcher

krawall/README.md

@@ -0,0 +1,15 @@
+Overview
+========
+
+This script was originally copied from [X4/krawall.sh](https://gist.github.com/X4/5197205)
+
+Usage
+=====
+
+Re-sort the wallpaper list:
+
+    $ krawall --resort
+
+Advance the wallpaper for i3:
+
+    $ krawall --hacker --next

krawall/krawall

@@ -0,0 +1,273 @@
+#!/bin/bash
+# -------------------------------------------------------
+# @author X4
+# @version 1.0
+#
+# HowTo:
+# You can add a new GlobalHotkey to the media forward an back buttons for example.
+# There are other ways to run this script: Button or Keypresses, Plasmoids, Events..
+#
+# Use these parameters when on XFCE for example:
+#   calling "./krawall --xfce --prev" should return the previous wallpaper in the stack
+#   calling "./krawall --xfce --next" should return the next wallpaper in the stack
+#
+# TODO: 
+#   [x] Switch to different Wallpaper on each Virtual-Desktop (Only for e17 atm).
+#   [ ] Get the call_enlightenment function to work for the Enlightenment Desktop.
+#   [ ] Get the call_kde4 function for KDE4 to work without a restart of the plasma desktop. run some ./qt_cpp maybe?
+#   [x] I think I should cache the result of $WALLPAPER for faster switching of wallpapers.
+# -------------------------------------------------------
+set -e
+
+# Set the path to your own wallpaper directory
+WALLPAPER_PATH="/home/matt/wallpaper/"
+
+
+#########################################################
+ # display usage
+usage() {
+    printf "%s\n\n%s" \
+    "$0 is an experimental wallpaper changer that works with most Linux Desktops."\
+    "Usage: $0 [arguments]"\
+
+    printf "\n  %s\t\t%s" \
+    "-p (--prev)"       "Show previous Wallpaper"\
+    "-n (--next)"       "Show next Wallpaper"\
+    "-r (--resort)"     "Randomize Wallpaper list"\
+    "-s (--rescan)"     "Rescan Wallpaper directories"
+    printf "\n"
+
+    printf "\n  %s\t\tSetup for the %s" \
+    "--xfce"            "XFCE4-Desktop"\
+    "--hacker"          "i3 or xmonad Desktop"\
+    "--gnome2"          "GNOME2-Desktop"\
+    "--gnome3"          "GNOME3-Desktop"\
+    "--kde3"            "KDE3-Desktop"\
+    "--kde4"            "KDE4-Desktop (experimental)"\
+    "--edesk"           "Enlightenment Desktop"
+    printf "\n"
+}
+
+create_queue() {
+    find -L "$WALLPAPER_PATH" -type f -iregex ".*\.\(jpg\|gif\|png\|jpeg\)$" > /tmp/krawall_queue
+}
+
+shuffle_wallpapers() {
+    if [[ ! -f "/tmp/krawall_last" ]] ; then
+        create_queue
+    fi
+    cp -f /tmp/krawall_head /tmp/krawall_last
+    cat /tmp/krawall_queue | shuf -n 1 > /tmp/krawall_head
+}
+
+# if less than two arguments supplied, display usage
+if [[  $1 == "" ]] ; then
+    usage
+    exit 1
+fi
+
+krawall ()
+{
+    local needle=$1
+    shift
+    while [[ $1 == -* ]]
+    do
+        # By convention, "--" means end of options.
+        case "$1" in
+            --)      return 1 ;;
+            $needle) return 0 ;;
+        esac
+
+        shift
+    done
+    return 1
+}
+
+# Show the user some help when -h or --help is supplied
+krawall -h "$@" || krawall --help "$@" &&
+    usage
+
+# shuffle wallpaper queue, or create it
+if [[ ! -f "/tmp/krawall_queue" ]] ; then
+    create_queue
+else
+    krawall -p "$@" || krawall --prev "$@" &&
+        NEXT_WALLPAPER="$(cat /tmp/krawall_last 2>/dev/null)" &&
+        printf "%s\n" "Switching to previous Wallpapers."
+
+    krawall -n "$@" || krawall --next "$@" &&
+        shuffle_wallpapers &&
+        NEXT_WALLPAPER="$(cat /tmp/krawall_head 2>/dev/null)" &&
+        printf "%s\n" "Switching to next Wallpapers."
+
+    krawall -r "$@" || krawall --resort "$@" &&
+        shuffle_wallpapers &&
+        printf "%s\n" "Successfully randomized the wallpaper list."
+
+    krawall -s "$@" || krawall --rescan "$@" &&
+        printf "%s\n" "rescan is set" &&
+        rm -f /tmp/krawall_queue > /dev/null &&
+        create_queue &&
+        printf "%s\n" "Successfully created the wallpaper list."
+fi
+
+FILENAME=$(echo "$NEXT_WALLPAPER" | sed 's:.*/::')
+
+call_xfce() {
+    xfconf-query -c xfce4-desktop -p /backdrop/screen0/monitor0/image-path -s "$NEXT_WALLPAPER"
+    printf "%s\n" "xfce is set"
+}
+
+call_xmonad_i3() {
+    NEXT_WALLPAPER_ESCAPE=$(echo "$NEXT_WALLPAPER" | sed 's/ /\\ /g')
+    feh --bg-max "$NEXT_WALLPAPER"
+    printf "%s\n" "i3/xmonad is set"
+}
+
+call_gnome2() {
+    gconftool-2 --set /desktop/gnome/background/picture_filename --type string "$NEXT_WALLPAPER"
+    printf "%s\n" "gnome2 is set"
+}
+
+call_gnome3() {
+    gsettings set org.gnome.desktop.background picture-uri "file://$NEXT_WALLPAPER"
+    printf "%s\n" "gnome3 is set"
+}
+
+call_kde3() {
+    dcop kdesktop KBackgroundIface setWallpaper "$NEXT_WALLPAPER" 1
+    printf "%s\n" "kde3 is set"
+}
+
+call_kde4() {
+    kde4_script=$(mktemp) && cat > $kde4_script \
+
+<<_EOF
+  var wallpaper = "$NEXT_WALLPAPER";
+  var activity = activities()[0];
+  activity.currentConfigGroup = ["Wallpaper","image"];
+  activity.writeConfig("wallpaper", wallpaper);
+  activity.writeConfig("userswallpaper", wallpaper);
+  activity.reloadConfig();
+_EOF
+
+    # Run the above javascript, then remove the temp file
+    qdbus org.kde.plasma-desktop /MainApplication loadScriptInInteractiveConsole $kde4_script > /dev/null && sleep 10
+    rm -f "$kde4_script"
+
+    # Let's reparse the configuration
+    dbus-send --dest=org.kde.plasma-desktop /MainApplication org.kde.plasma-desktop.reparseConfiguration
+    dbus-send --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.ReloadConfig
+    dbus-send --dest=org.kde.kwin /KWin org.kde.KWin.reloadConfig
+
+    # Run again to be sure, because I don't know what I do
+    #qdbus org.kde.plasma-desktop /MainApplication reparseConfiguration
+    #qdbus org.freedesktop.DBus /org/freedesktop/DBus ReloadConfig
+    #qdbus org.kde.kwin /KWin reconfigure
+
+
+    # This is stupid! I don't want to restart plasma, but have to? Isn't there a better way????????
+    kbuildsycoca4 2>/dev/null && kquitapp plasma-desktop 2>/dev/null ; kstart plasma-desktop > /dev/null 2>&1
+
+    # I'll keep the maybe useless crap below...
+    #kwriteconfig --file plasma-desktop-appletsrc --group Containments --group $GROUP_ID --group Wallpaper --group image --key "$NEXT_WALLPAPER"
+    #WALLPAPER="$(kreadconfig --file plasma-desktop-appletsrc --group Containments --group $GROUP_ID --group Wallpaper --group image --key wallpaper)"
+    #CurrentDesktopID="$(qdbus org.kde.KWin /KWin currentDesktop)"
+
+    printf "%s\n" "kde4 is set"
+}
+
+# forked from: https://gist.github.com/rumia/4565562#file-imgtoedj-sh-L8
+call_enlightenment() {
+
+    OUTPUT_DIR="$HOME/.e/e/backgrounds"
+    TEMPLATE='
+    images { image: "@IMAGE@" USER; }
+    collections {
+      group {
+          name: "e/desktop/background";
+          data { item: "style" "4"; item: "noanimation" "1"; }
+          max: @WIDTH@ @HEIGHT@;
+          parts {
+            part {
+                name: "bg";
+                mouse_events: 0;
+                description {
+                  state: "default" 0.0;
+                  aspect: @ASPECT@ @ASPECT@;
+                  aspect_preference: NONE;
+                  image { normal: "@IMAGE@"; scale_hint: STATIC; }
+                }
+            }
+          }
+      }
+    }
+    '
+
+    #-desktop-bg-add OPT1 OPT2 OPT3 OPT4 OPT5 Add a desktop bg definition.
+    # OPT1 = ContainerNo OPT2 = ZoneNo OPT3 = Desk_x. OPT4 = Desk_y. OPT5 = bg file path
+    desk_x_count=$(enlightenment_remote -desktops-get | awk '{print $1}')
+    desk_y_count=$(enlightenment_remote -desktops-get | awk '{print $2}')
+
+    for ((x=0; x<$desk_x_count; x++)); do
+        for ((y=0; y<$desk_y_count; y++)); do
+
+            shuffle_wallpapers
+            NEXT_WALLPAPER="$(cat /tmp/krawall_head 2>/dev/null)"
+            FILENAME=$(echo "$NEXT_WALLPAPER" | sed 's:.*/::')
+            #echo "$x" "$y $OUTPUT_DIR/${FILENAME%%.*}.edj"
+
+            DIMENSION="$(identify -format "%w/%h" "$NEXT_WALLPAPER")"
+            if [ ! -z "$DIMENSION" ]; then
+                WIDTH=$(echo $DIMENSION | cut -d/ -f1)
+                HEIGHT=$(echo $DIMENSION | cut -d/ -f2)
+                IMAGE="$(echo "$NEXT_WALLPAPER" | sed 's/[^[:alnum:]_-]/\\&/g')"
+                if [ -z "$HEIGHT" -o "$HEIGHT" = "0" ]; then
+                    ASPECT="0.0"
+                else
+                    ASPECT=$(echo "scale=9; $DIMENSION" | bc)
+                fi
+
+                printf "%s" "$TEMPLATE" | \
+                sed "s/@ASPECT@/$ASPECT/g; s/@WIDTH@/$WIDTH/g; s/@HEIGHT@/$HEIGHT/g; s|@IMAGE@|$IMAGE|g" > /tmp/krawall.edc
+                edje_cc -nothreads /tmp/krawall.edc -o "$OUTPUT_DIR/${FILENAME%%.*}.edj" 2>/dev/null
+                rm /tmp/krawall.edc
+                #echo "Compiled $OUTPUT_DIR/${FILENAME%%.*}.edj"
+            fi  
+
+            enlightenment_remote -desktop-bg-del 0 0 "$x" "$y"
+            enlightenment_remote -desktop-bg-add 0 0 "$x" "$y" $OUTPUT_DIR/${FILENAME%%.*}.edj;
+        done;
+    done    
+
+    printf "%s\n" "enlightenment is set"
+}
+
+
+# Change wallpaper when xfce4-desktop is set.
+krawall --xfce "$@" &&
+    call_xfce
+
+# Change wallpaper when xfce4-desktop i3 or xmonad is set.
+krawall --hacker "$@" || krawall --xmonad "$@" || krawall --i3 "$@" &&
+    call_xmonad_i3
+
+# Change wallpaper when gnome2 is set.
+krawall --gnome2 "$@" &&
+    call_gnome2
+
+# Change wallpaper when gnome3 is set.
+krawall --gnome3 "$@" &&
+    call_gnome3
+
+# Change wallpaper when kde3 is set.
+krawall --kde3 "$@" &&
+    call_kde3
+
+# Change wallpaper when kde4 is set.  
+krawall --kde4 "$@" &&
+    call_kde4
+
+# Change wallpaper when enlightenment is set.  
+krawall --e17 "$@" || krawall --edesk "$@" &&
+    call_enlightenment