Léon Brocard > Image-Imlib2-Thumbnail > Image::Imlib2::Thumbnail

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Module Version: 0.40   Source  

NAME ^

Image::Imlib2::Thumbnail - Generate a set of thumbnails of an image

SYNOPSIS ^

  use Image::Imlib2::Thumbnail;
  my $thumbnail = Image::Imlib2::Thumbnail->new();
  
  # generates a set of thumbnails for $source image in $directory
  my @thumbnails = $thumbnail->generate( $source, $directory );
  foreach my $thumbnail (@thumbnails) {
    my $name = $thumbnail->{name};
    my $width = $thumbnail->{width};
    my $height = $thumbnail->{height};
    my $type = $thumbnail->{type};
    my $filename = $thumbnail->{filename};
    my $mime_type = $thumbnail->{mime_type};
    print "$name/$type/$mime_type is $width x $height at $filename\n";
  }

DESCRIPTION ^

This module generates a series of thumbnails of an image using Image::Imlib2. If you want to generate a single thumbnail, you should look at Image::Imlib2's create_scaled_image method.

Digital cameras take photos in many different sizes and aspect ratios. Photo websites need to display thumbnails of different sizes of these photos. This module makes it easy to generate a series of thumbnails of an image of the right sizes. It resizes and crops images to match the requires size.

What sizes does it generate? By default it generates thumbnails of the same dimension that Flickr generates:

  Type       Name       Width  Height
  Landscape  Square     75     75
  Landscape  Thumbnail  100    75
  Landscape  Small      240    180
  Landscape  Medium     500    375
  Landscape  Large      1024   768
  Portrait   Square     75     75
  Portrait   Thumbnail  75     100
  Portrait   Small      180    240
  Portrait   Medium     375    500
  Portrait   Large      768    1024

The test suite contains images of every size mentioned on the Wikipedia "Digital camera" article:

  http://en.wikipedia.org/wiki/Digital_camera#Image_resolution

METHODS ^

new

The constructor:

  my $thumbnail = Image::Imlib2::Thumbnail->new();

generate

Generates a set of thumbnails for $source image in $directory. Will also include the original image:

  my @thumbnails = $thumbnail->generate( $source, $directory );
  foreach my $thumbnail (@thumbnails) {
    my $name = $thumbnail->{name};
    my $width = $thumbnail->{width};
    my $height = $thumbnail->{height};
    my $type = $thumbnail->{type};
    my $filename = $thumbnail->{filename};
    my $mime_type = $thumbnail->{mime_type};
    print "$name/$type/$mime_type is $width x $height at $filename\n";
  }

add_size

Add an extra size:

  $thumbnail->add_size(
      {   type    => 'landscape',
          name    => 'header',
          width   => 350,
          height  => 200,
          quality => 80,
      }
  );

If width or height are 0, then this retains the aspect ratio and performs no cropping.

The quality is the JPEG quality compression ratio. This defaults to 75.

AUTHOR ^

Leon Brocard, acme@astray.com

COPYRIGHT ^

Copyright (c) 2007-8 Leon Brocard. All rights reserved.

LICENSE ^

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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