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#!/usr/bin/perl
# Copyright © 2009,2010 by Daniel Friesel <derf@derf.homelinux.org>
# License: WTFPL <http://sam.zoy.org/wtfpl>
use strict;
use warnings;
use Image::Imlib2;
use Getopt::Long;
use constant {
DEFAULT_FILEMODE => oct(644),
};
my $directory = '.';
my $thumbdir = "$directory/.thumbs";
my $indexfile = "$directory/index.xhtml";
my $title = '';
my $css_line = '';
my $thumb_max_dim = 150;
my $thumb_quality = 75;
my $thumb_spacing = 1.1;
my $css_source;
my ($dx, $dy);
my @files;
my $number = 0;
local $| = 1;
sub print_progress {
if (($number % 60) == 0) {
if ($number) {
printf(" %4d/%d\n", $number, scalar(@files));
}
printf('[%3d%%] ', $number * 100 / @files);
} elsif (($number % 10) == 0) {
print ' ';
}
return;
}
GetOptions(
'css=s' => \$css_source,
'size=i' => \$thumb_max_dim,
'spacing=f' => \$thumb_spacing,
'title=s' => \$title,
'quality=i' => \$thumb_quality,
);
if (@ARGV > 0) {
$directory = shift;
}
if (defined($css_source)) {
$css_line = "<link rel=\"stylesheet\" type=\"text/css\" href=\"$css_source\"/>";
}
open(my $index, '>', $indexfile) or die("Cannot open $indexfile for writing: $!");
print $index <<"EOD";
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>$title</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
$css_line
</head>
<body><div>
EOD
if (! -d $thumbdir) {
mkdir($thumbdir) or die("cannot create $thumbdir: $!");
}
opendir(my $dirhandle, $directory) or die("Cannot open directory $directory: $!");
foreach my $file (readdir($dirhandle)) {
if ($file =~ / \. ( png | jp e? g ) $ /ix) {
push(@files, $file);
}
}
closedir($dirhandle);
print "Generating thumbnails [ - cached | + generated ]\n";
foreach my $file (sort { lc($a) cmp lc($b) } @files) {
my $image = Image::Imlib2->load($file);
my $thumb;
if (defined($css_source)) {
print {$index} '<div class="imgbox">';
}
else {
printf {$index} (
'<div style="float: left; width: %dpx; height: %dpx">',
$thumb_max_dim * $thumb_spacing,
$thumb_max_dim * $thumb_spacing,
);
}
print {$index} "<a href=\"$file\"><img src=\".thumbs/$file\" alt=\"$file\" /></a></div>\n";
print_progress;
$number++;
if (-e "$thumbdir/$file") {
print '-';
next;
}
($dx, $dy) = ($image->width, $image->height);
if ($dx > $thumb_max_dim and $dy > $thumb_max_dim) {
if ($dx > $dy) {
$thumb = $image->create_scaled_image($thumb_max_dim, 0);
}
else {
$thumb = $image->create_scaled_image(0, $thumb_max_dim);
}
}
else {
$thumb = $image;
}
$thumb->set_quality($thumb_quality);
$thumb->save("$thumbdir/$file");
chmod(DEFAULT_FILEMODE, "$thumbdir/$file");
print '+';
}
print "\n";
print $index <<'EOD';
</div></body>
</html>
EOD
close($index) or die("Cannot close $indexfile: $!");
chmod(DEFAULT_FILEMODE, $indexfile);
__END__
=head1 NAME
gen-xhtml-thumbnails - Generate Thumbnails + Index for a set of images
=head1 SYNOPSIS
B<gen-xhtml-thumbnails> [I<options>] [I<directory>]
=head1 DESCRIPTION
gen-xhtml-thumbnails will create an F<index.xhtml> with a list (thumbnails) of
all images found if I<directory>; the thumbnails will link to the images.
The F<index.xhtml> file will always be created in I<directory>.
The thumbnails will be saved in F<.thumbs>, also in I<directory>.
If I<directory> is not specified, the current directory is used.
Note that only the images in the directory itself will be processed, recursion
is not supported.
=head1 OPTIONS
=over
=item B<--css> I<file>
Use I<file> for css definitions
=item B<--size> I<pixels>
Maximum thumbnail size (either width or height)
=item B<--spacing> I<float>
Use I<float> as spacing factor.
The size of each image element (image + possible border around it) is the
number of pixels (see --size) times I<float>.
So for B<1.1> you have a small border around each image, for B<1.0> you have
no border at all, etc.
=item B<--title> I<title>
Use I<title> as <title> for the XHTML output
=item B<--quality> I<int>
Set thumbnail quality.
Accepts values between 0 and 100, where 100 is the highest possible quality
=back
=head1 EXIT STATUS
Zero upon success, non-zero otherwise.
=head1 CONFIGURATION
None.
=head1 DEPENDENCIES
B<gen-xhtml-thumbnails> requires the Image::Imlib2 perl module.
=head1 BUGS AND LIMITATIONS
There is no detection for changed images, the thumbnails of deleted images are
not removed.
=head1 AUTHOR
Copyright (C) 2009, 2010 by Daniel Friesel E<gt>derf@chaosdorf.deE<lt>
=head1 LICENSE
0. You just DO WHAT THE FUCK YOU WANT TO
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