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#!/usr/bin/env perl
use strict;
use warnings;
use 5.010;
use autodie;
use GD;
use Getopt::Std;
my %opts;
getopts('a:cfgC:', \%opts);
my $alpha = $opts{'a'} // 0;
my $im = GD::Image->new(200, 80);
$im->saveAlpha(1);
my $white = $im->colorAllocateAlpha(255, 255, 255, $alpha);
my $gray = $im->colorAllocateAlpha(127, 127, 127, $alpha);
my $fg = $im->colorAllocateAlpha( 0, 0, 0, $alpha);
my $bg = $im->colorAllocateAlpha( 0, 0, 0, 127);
if ($opts{'C'}) {
$fg = $im->colorAllocateAlpha(split(qr{,}, $opts{'C'}), $alpha);
}
my @lines = split(/\n/, qx{calendar});
if ($opts{'c'}) {
say join("\n", @lines);
}
elsif ($opts{'g'}) {
$im->filledRectangle(0, 0, 200, 80, $bg);
my $used_height = @lines * 10;
if ($used_height > 72) {
$used_height = 72;
}
if ($used_height) {
$used_height += 8;
$im->filledRectangle(0, 0, 200, $used_height, $white);
$im->rectangle(0, 0, 200, $used_height, $gray);
}
for my $i (0 .. $#lines) {
$lines[$i] =~ s{\t}{};
$im->string(gdSmallFont, 2, 2 + (10 * $i), $lines[$i], $fg);
}
open(my $out_fh, '>', '/tmp/vcalendar.png');
binmode $out_fh;
print $out_fh $im->png();
close($out_fh);
}
if ($opts{'f'}) {
exec('feh', '/tmp/vcalendar.png');
}
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