Looking to display non-image files in Gallery with logo specific to file type

Question

When I first began looking into this, File Gallery got me much closer to solving the problem. The only issue is that the plugin only displays the generic non-image icon when I upload a file.

Does anyone know of a pre-existing plugin that would either work alongside File Gallery or in place of it to achieve logos specific to a file type (say, I upload a .doc file then the plugin displays a MS Word logo).

Failing a pre-existing plugin, what would be a good starting point to attempt to craft my own hand-made solution?

Thanks in advance!

Note: This was originally posted in on the wordpress.org support forum here, but since it got no responses there, I thought I'd try my luck here.

Answer 1

WordPress has a native function wp_mime_type_icon() in wp-includes/post.php that you can use.

Basic example:

// $attachment should be a full post object 

if ( wp_attachment_is_image( $attachment->ID ) )
{
    echo wp_get_attachment_image(
        $attachment->ID,
        array( 480, 900 ),
        FALSE,
        array ( 'class' => 'aligncenter' )
    );
}
else
{
    echo '<img src="' . wp_mime_type_icon( $attachment->post_mime_type ) . '">';
}

Look in wp-includes/images/crystal/ for available file type icons:

• archive
• audio
• code
• default
• document
• interactive
• spreadsheet
• text
• video

You can set up your own image directory and filter 'icon_dir' for the local path and 'icon_dir_uri' for the URIs to let WordPress use your images.
To change just singular files filter 'wp_mime_type_icon':

apply_filters( 'wp_mime_type_icon', $icon, $mime, $post_id )

Answer 2

I don't think you will have luck getting it to work with another gallery plugin without altering that plugins code, but you can do this yourself rather easily by writing a plugin/function or using a template page.

What you can do is use get_children to grab the post_mime_type, in your case a simple example would be,

get_children( 'post_type=attachment&post_mime_type=doc' );
//assuming your using ms .doc files.

Once you have the mime type you can use wp_get_attachment_link to create the link, unfortunately this functions $icon parameter is a boolean so it does not allow you to add your own icon, you will have to echo out an actual url to the icon you want to use.

http://codex.wordpress.org/Function_Reference/get_children
http://codex.wordpress.org/Function_Reference/wp_get_attachment_link
http://tgrayimages.com/automate-file-attachments-on-your-wordpress-posts/