gh-zoomify.php

<?php
/*
Plugin Name: Zoomify embed for WP
Plugin URI:
Description: This plugin allows you to embed zoomify images on any page or post using a shortcode
Version: 1.0
Author: Sander de Wijs
Author URI: https://www.degrinthorst.nl/
License: GPLv2
*/

// Exit when called directly
defined( 'ABSPATH' ) or die( 'Nope!' );

define('GH_ZOOMIFY_BASE', plugin_dir_url( __FILE__ ));

// code for header css and JS
function gh_zoomify_scripts_styles()
{
    wp_enqueue_script('zoomify-js', GH_ZOOMIFY_BASE . 'assets/js/ZoomifyImageViewerExpress-min.js', '', false, false);
    wp_enqueue_style('gh-zoomify', GH_ZOOMIFY_BASE . 'assets/css/zoomify-styles.css');
}
add_action('wp_enqueue_scripts', 'gh_zoomify_scripts_styles');

/**
 * Add support for uploading zif files
 */
function add_zif_support($mime_types)
{
    $mime_types['zif'] = 'image/zif';
    return $mime_types;
}
add_filter('upload_mimes', 'add_zif_support');

function zoomify_container_js($linkToFile, $skin)
{
    $zSkinPath = GH_ZOOMIFY_BASE . 'assets/Skins/' . ucfirst($skin) . '/';
    return '<script type="text/javascript">Z.showImage("zoomifyContainer", "' . $linkToFile . '", "zSkinPath=' . $zSkinPath . '");</script>';
}

// code for shortcode
function gh_zoomify_shortcode($atts)
{
    $a = shortcode_atts( array(
        'file' => 'filename',
        'skin' => 'Default',
    ), $atts );


    // Use the attachment link in the Zoomify JS
    $output = zoomify_container_js($a['file'], $a['skin']);
    $output .= '<div id="zoomifyContainer"></div>'; 
    
    return $output;
}

add_shortcode('zoomify', 'gh_zoomify_shortcode');

//// Function for determining the url to the Zoomify image
//function find_zoomifyzif_permalink($imageName)
//{
//    // Query args for zif file
//    $z_args = array(
//        'post_type' => 'attachment',
//        'mime_type' => 'image/zif',
//        'name' => trim($imageName),
//        'posts_per_page' => 1
//    );
//
//    $zoomifyQuery = new WP_Query($z_args);
//
//    if($zoomifyQuery->posts[0]) {
//        return wp_get_attachment_url($zoomifyQuery->posts[0]->ID);
//    } else {
//        return false;
//    }
//}