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93 lines
2.9 KiB
93 lines
2.9 KiB
4 years ago
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#!/usr/bin/env perl
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#
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# Copyright 2014 Marcelo Cerri <mhcerri at gmail dot com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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use strict;
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use warnings;
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use utf8;
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use Getopt::Long;
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use File::Basename;
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# Default values
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my $indicator = $ENV{BLOCK_INSTANCE} || $ENV{KEY} || "CAPS";
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my $text_on = $ENV{TEXT_ON} || $indicator;
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my $text_off = $ENV{TEXT_OFF} || $indicator;
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my $color_on = $ENV{COLOR_ON} || "#00FF00";
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my $color_off = $ENV{COLOR_OFF} || "#222222";
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my $bg_color_on = $ENV{BG_COLOR_ON};
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my $bg_color_off = $ENV{BG_COLOR_OFF};
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my $hide = $ENV{HIDE_WHEN_OFF} || 0;
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sub help {
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my $program = basename($0);
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printf "Usage: %s [-c <color on>] [-C <color off>] [-b <bg color on>] [-B <bg color off>] [--hide]\n", $program;
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printf " -c <color on>: hex color to use when indicator is on\n";
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printf " -C <color off>: hex color to use when indicator is off\n";
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printf " -b <background color on>: hex color to use when indicator is on\n";
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printf " -B <background color off>: hex color to use when indicator is off\n";
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printf " --hide: don't output anything when indicator is off\n";
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printf "\n";
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printf "Note: environment variable \$BLOCK_INSTANCE should be one of:\n";
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printf " CAPS, NUM (default is CAPS).\n";
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exit 0;
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}
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Getopt::Long::config qw(no_ignore_case);
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GetOptions("help|h" => \&help,
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"c=s" => \$color_on,
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"C=s" => \$color_off,
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"b=s" => \$bg_color_on,
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"B=s" => \$bg_color_off,
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"hide" => \$hide) or exit 1;
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# Key mapping
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my %indicators = (
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CAPS => 0x00000001,
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NUM => 0x00000002,
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);
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# Retrieve key flags
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my $mask = 0;
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open(XSET, "xset -q |") or die;
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while (<XSET>) {
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if (/LED mask:\s*([0-9a-f]+)/) {
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$mask = hex $1;
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last;
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}
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}
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close(XSET);
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# Determine if indicator is on or off
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my $indicator_status = ($indicators{$indicator} || 0) & $mask;
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# Exit if --hide and indicator is off
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if ($hide and !$indicator_status) {
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exit 0
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}
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# Output
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$indicator = $indicator_status ? $text_on : $text_off;
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my $fg_color = $indicator_status ? $color_on : $color_off;
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my $bg_color = $indicator_status ? $bg_color_on : $bg_color_off;
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if (defined $bg_color) {
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printf "<span color='%s' bgcolor='%s'>%s</span>\n", $fg_color, $bg_color, $indicator;
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} else {
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printf "<span color='%s'>%s</span>\n", $fg_color, $indicator;
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}
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exit 0
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