1 files changed, 70 insertions, 0 deletions
diff --git a/scripts/i3blocks/keyindicator b/scripts/i3blocks/keyindicator
new file mode 100755
index 0000000..9c21505
--- /dev/null
+++ b/scripts/i3blocks/keyindicator
@@ -0,0 +1,70 @@
+#!/usr/bin/perl
+#
+# Copyright 2014 Marcelo Cerri <mhcerri at gmail dot com>
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+use strict;
+use warnings;
+use utf8;
+use Getopt::Long;
+use File::Basename;
+
+# Default values
+my $indicator = $ENV{BLOCK_INSTANCE} || "CAPS";
+my $color_on  = "#00FF00";
+my $color_off = "#222222";
+
+sub help {
+    my $program = basename($0);
+    printf "Usage: %s [-c <color on>] [-C <color off>]\n", $program;
+    printf "  -c <color on>: hex color to use when indicator is on\n";
+    printf "  -C <color off>: hex color to use when indicator is off\n";
+    printf "\n";
+    printf "Note: environment variable \$BLOCK_INSTANCE should be one of:\n";
+    printf "  CAPS, NUM (default is CAPS).\n";
+    exit 0;
+}
+
+Getopt::Long::config qw(no_ignore_case);
+GetOptions("help|h" => \&help,
+           "c=s"    => \$color_on,
+           "C=s"    => \$color_off) or exit 1;
+
+# Key mapping
+my %indicators = (
+    CAPS => 0x00000001,
+    NUM  => 0x00000002,
+);
+
+# Retrieve key flags
+my $mask = 0;
+open(XSET, "xset -q |") or die;
+while (<XSET>) {
+    if (/LED mask:\s*([0-9]+)/) {
+        $mask = $1;
+        last;
+    }
+}
+close(XSET);
+
+# Output
+printf "%s\n", $indicator;
+printf "%s\n", $indicator;
+if (($indicators{$indicator} || 0) & $mask) {
+    printf "%s\n", $color_on;
+} else {
+    printf "%s\n", $color_off;
+}
+exit 0