Window Manager: Added support for getting window manager with xprop

1.1.md

@@ -31,6 +31,7 @@ at launch or in script.
 **Window Manager:**
 
 - Added support for `$XINITRC`
+- Added support for `xprop`
 
 **Shell:**
 

README.md

@@ -82,7 +82,7 @@ https://github.com/dylanaraps/fetch/wiki/Customizing-Info
     - **Note:** The script can now also use iTerm2's builtin image rendering instead of w3m!<br \>
     Enable it by changing `$image_backend` to `iterm2` or by using the launch flag `--image_backend`.
 -  Image Cropping, Resizing etc: `ImageMagick`
--  More accurate window manager detection: `wmctrl`
+-  More accurate window manager detection: `wmctrl` or `xprop`
 
 **Linux / BSD:**
 

fetch

@@ -12,7 +12,7 @@
 # Optional Dependencies: (You'll lose these features without them)
 #   Displaying Images: w3m + w3m-img
 #   Image Cropping: ImageMagick
-#   More accurate window manager detection: wmctrl
+#   More accurate window manager detection: wmctrl or xprop
 #   [ Linux / BSD ] Wallpaper Display: feh, nitrogen or gsettings
 #   [ Linux / BSD ] Current Song: mpc or cmus
 #   [ Linux / BSD ] Resolution detection: xorg-xdpyinfo
@@ -652,11 +652,25 @@ getshell () {
 # Window Manager {{{
 
 getwindowmanager () {
+    # Check for window manager using wmctrl and xprop
     if type -p wmctrl >/dev/null 2>&1; then
         windowmanager="$(wmctrl -m | head -n1)"
         windowmanager=${windowmanager/Name: }
 
-    elif [ "$XDG_CURRENT_DESKTOP" ]; then
+    elif type -p xprop >/dev/null 2>&1; then
+        # Get id of window manager
+        wid=$(xprop -root _NET_SUPPORTING_WM_CHECK 2>/dev/null)
+        wid=${wid//* }
+
+        windowmanager="$(xprop -id $wid 8s _NET_WM_NAME 2>/dev/null)"
+        windowmanager=${windowmanager/*\(*\) = \"}
+        windowmanager=${windowmanager/\"}
+    fi
+
+    # If the window manager wasn't found, fallback to
+    # checking files / envars.
+    if [ -z "$windowmanager" ]; then
+        if [ "$XDG_CURRENT_DESKTOP" ]; then
             windowmanager="$XDG_CURRENT_DESKTOP"
 
         elif [ "$XINITRC" ]; then
@@ -685,6 +699,7 @@ getwindowmanager () {
         windowmanager="${windowmanager/exec }"
         windowmanager="${windowmanager/-session}"
         windowmanager="${windowmanager^}"
+    fi
 }
 
 # }}}