pdfjs-viewer.php
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<?php
/*
Plugin Name: Tenzing PDFjs Viewer
Plugin URI:
Description: Embed PDFs with the gorgeous PDF.js viewer
Version: 99
Author: Jeff
Author URI: https://gotenzing.com/
License: GPLv2
*/
//==== Shortcode ====
//tell wordpress to register the pdfjs-viewer shortcode
add_shortcode("pdfjs-viewer", "pdfjs_handler");
function pdfjs_handler($incoming_from_post) {
//set defaults
$incoming_from_post=shortcode_atts(array(
'url' => 'bad-url.pdf',
'viewer_height' => '1360px',
'viewer_width' => '100%',
'fullscreen' => 'true',
'download' => 'true',
'print' => 'true',
'openfile' => 'false',
'search' => ' ',
), $incoming_from_post);
$pdfjs_output = pdfjs_generator($incoming_from_post);
//send back text to replace shortcode in post
return $pdfjs_output;
}
function pdfjs_generator($incoming_from_handler) {
$viewer_base_url= plugins_url()."/pdfjs-viewer-shortcode/pdfjs/web/viewer.php";
$file_name = $incoming_from_handler["url"];
$viewer_height = $incoming_from_handler["viewer_height"];
$viewer_width = $incoming_from_handler["viewer_width"];
$fullscreen = $incoming_from_handler["fullscreen"];
$download = $incoming_from_handler["download"];
$print = $incoming_from_handler["print"];
$openfile = $incoming_from_handler["openfile"];
$search = $incoming_from_handler["search"];
if ($download != 'true') {
$download = 'false';
}
if ($print != 'true') {
$print = 'false';
}
if ($openfile != 'true') {
$openfile = 'false';
}
$final_url = $viewer_base_url."?file=".$file_name."&download=".$download."&print=".$print."&openfile=".$openfile."&search=".$search;
$fullscreen_link = '';
if($fullscreen == 'true'){
$fullscreen_link = '<a id="fullscreen" href="'.$final_url.'&fullscreen=on">View Fullscreen</a><br>';
}
$iframe_code = '<iframe width="'.$viewer_width.'" height="'.$viewer_height.'" src="'.$final_url.'"></iframe> ';
return $fullscreen_link.$iframe_code;
}
//==== Media Button ====
//priority is 12 since default button is 10
add_action('media_buttons', 'pdfjs_media_button', 12);
function pdfjs_media_button() {
echo '<a href="#" id="insert-pdfjs" class="button">Add PDF</a>';
}
add_action('wp_enqueue_media', 'include_pdfjs_media_button_js_file');
function include_pdfjs_media_button_js_file() {
wp_enqueue_script('media_button', plugins_url().'/pdfjs-viewer-shortcode/pdfjs-media-button.js', array('jquery'), '1.0', true);
}
?>