Improve wallpaper menu generation.

[fvwmconf.git] / scripts / bgmenu.sh

diff --git a/scripts/bgmenu.sh b/scripts/bgmenu.sh
new file mode 100755 (executable)
index 0000000..98a2a1d
--- /dev/null
+++ b/scripts/bgmenu.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+#
+# Copyright © 2008, 2017 Nick Bowler
+#
+# Generates an FVWM menu for selecting the PNG images found in a given
+# directory.  Thumbnails for the images are generated on the fly using
+# the thumbnailer.zsh script.  Menu items run the specified function
+# with the filename as the first argument.
+
+thumber="$FVWM_USERDIR/scripts/thumbnail.zsh --size x160"
+xaspect=$FVWM_USERDIR/scripts/C/xaspect
+menu=MenuWallpaper
+func=SetWallpaper
+
+lastarg=
+dashdash=
+for arg; do
+  if test ${lastarg:+y}; then
+    arg=$lastarg=$arg
+    lastarg=
+  fi
+
+  case $dashdash$arg in
+  --menu=*) menu=${arg#--menu=} ;;
+  --func=*) func=${arg#--func=} ;;
+  --menu|--func) lastarg=$arg ;;
+  --) dashdash=: ;;
+  -*) printf '%s: unrecognized argument: %s\n' "$0" "$arg" 1>&2; exit 1 ;;
+  *) set x "$@" "$arg"; shift
+  esac
+
+  shift
+done
+
+case $# in
+1) dir=$1 ;;
+*) printf 'usage: %s [options] directory\n' "$0" 1>&2
+esac
+
+size=`$xaspect -dimensions`
+find $1 -maxdepth 1 -name "*$size.png" -print0 -exec $thumber {} \; |
+  awk -F '\0' '{
+    gsub(/["\\]/, "\\\\&");
+    caption = gensub(/.*\/(.*)\..*/, "\\1", 1, $1);
+    print "AddToMenu", menuname, "\"" caption "*" $2 "*\"",
+          funcname, "\"" $1 "\""
+  }' "menuname=$menu" "funcname=$func"