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<?php
/**
* Generate PDF
*
* Originally by Redcocker 2012/3/5
* License: GPL v2
* http://www.near-mint.com/blog/
*
* @since 2.1.0
*
* @package LearnDash\PDF
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ! function_exists( 'learndash_get_thumb_path' ) ) {
/**
* Gets featured image of certificate post.
*
* @param int $post_id Post ID.
*
* @return string Optional. Certificate featured image path. Default 0.
*/
function learndash_get_thumb_path( $post_id = 0 ) {
if ( ! empty( $post_id ) ) {
$post_type = get_post_type( $post_id );
if ( post_type_supports( $post_type, 'thumbnail' ) ) {
$thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true );
$thumbnail_id = absint( $thumbnail_id );
if ( $thumbnail_id ) {
/**
* Filters the type of the image to use for the certificate PDF background.
*
* Filter to allow URLs to be used for certificate background images. LEARNDASH-3430
*
* @since 3.2.0
*
* @param string $type Default 'path' will user local server path. 'url' will use image URL.
* @param int $post_id Post ID of certificate to be shown.
* @param int $thumbnail_id Image thumbnail ID.
*/
$image_type = apply_filters( 'ld_certificate_image_type', 'path', $post_id, $thumbnail_id );
if ( 'url' === $image_type ) {
$img_full_path = get_the_post_thumbnail_url( get_post( $post_id ), 'full' );
} else {
$img_path = get_post_meta( $thumbnail_id, '_wp_attached_file', true );
$upload_url = wp_upload_dir();
$upload_url['basedir'] = str_replace( '\\', '/', $upload_url['basedir'] );
$img_full_path = $upload_url['basedir'] . '/' . $img_path;
}
return $img_full_path;
}
}
}
return '';
}
}
if ( ! function_exists( 'learndash_post2pdf_conv_image_align_center' ) ) {
/**
* Adds the markup to align image to center.
*
* Used as callback in `preg_replace_callback` function.
*
* @param array $matches An array with strings to search and replace.
*
* @return string Image align center output.
*/
function learndash_post2pdf_conv_image_align_center( $matches ) {
$tag_begin = '<p class="post2pdf_conv_image_align_center">';
$tag_end = '</p>';
return $tag_begin . $matches[1] . $tag_end;
}
}
if ( ! function_exists( 'learndash_post2pdf_conv_img_size' ) ) {
/**
* Adds the height and width to the image tag.
*
* Used as a callback in `preg_replace_callback` function.
*
* @param array $matches array with strings to search and replace.
*
* @return string The image align center markup.
*/
function learndash_post2pdf_conv_img_size( $matches ) {
global $q_config;
$size = null;
if ( strpos( $matches[2], site_url() ) === false ) {
return $matches[1] . $matches[5];
}
$image_path = ABSPATH . str_replace( site_url() . '/', '', $matches[2] );
if ( file_exists( $image_path ) ) {
$size = getimagesize( $image_path );
} else {
return $matches[1] . $matches[5];
}
return $matches[1] . ' ' . $size[3] . $matches[5];
}
}
if ( ! function_exists( 'learndash_certificate_post_shortcode' ) ) {
/**
* Converts a post to PDF.
*
* @param array $cert_args Optional. Array of arguments passed in for processing. Default empty array.
*/
function learndash_certificate_post_shortcode( $cert_args = array() ) {
$cert_args_defaults = array(
'cert_id' => 0, // The certificate Post ID.
'post_id' => 0, // The Course/Quiz Post ID.
'user_id' => 0, // The User ID for the Certificate.
'lang' => 'eng', // The default language.
'filename' => '',
'filename_url' => '',
'filename_type' => 'title',
'pdf_title' => '',
'ratio' => 1.25,
/*
I: send the file inline to the browser (default).
D: send to the browser and force a file download with the name given by name.
F: save to a local server file with the name given by name.
S: return the document as a string (name is ignored).
FI: equivalent to F + I option
FD: equivalent to F + D option
E: return the document as base64 mime multi-part email attachment (RFC 2045)
*/
);
$cert_args = shortcode_atts( $cert_args_defaults, $cert_args );
// Just to ensure we have valid IDs.
$cert_args['cert_id'] = absint( $cert_args['cert_id'] );
$cert_args['post_id'] = absint( $cert_args['post_id'] );
$cert_args['user_id'] = absint( $cert_args['user_id'] );
if ( empty( $cert_args['cert_id'] ) ) {
if ( isset( $_GET['id'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$cert_args['cert_id'] = absint( $_GET['id'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
} else {
$cert_args['cert_id'] = get_the_id();
}
}
if ( empty( $cert_args['user_id'] ) ) {
if ( isset( $_GET['user'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$cert_args['user_id'] = absint( $_GET['user'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
} elseif ( isset( $_GET['user_id'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$cert_args['user_id'] = absint( $_GET['user_id'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
$cert_args['cert_post'] = get_post( $cert_args['cert_id'] );
if ( ( ! $cert_args['cert_post'] ) || ( ! is_a( $cert_args['cert_post'], 'WP_Post' ) ) || ( learndash_get_post_type_slug( 'certificate' ) !== $cert_args['cert_post']->post_type ) ) {
wp_die( esc_html__( 'Certificate Post does not exist.', 'learndash' ) );
}
$cert_args['post_post'] = get_post( $cert_args['post_id'] );
if ( ( ! $cert_args['post_post'] ) || ( ! is_a( $cert_args['post_post'], 'WP_Post' ) ) ) {
wp_die( esc_html__( 'Awarded Post does not exist.', 'learndash' ) );
}
$cert_args['user'] = get_user_by( 'ID', $cert_args['user_id'] );
if ( ( ! $cert_args['user'] ) || ( ! is_a( $cert_args['user'], 'WP_User' ) ) ) {
wp_die( esc_html__( 'User does not exist.', 'learndash' ) );
}
// Start config override section.
// Language codes in TCPDF are 3 character eng, fra, ger, etc.
/**
* We check for cert_lang=xxx first since it may need to be different than
* lang=yyy.
*/
$config_lang_tmp = '';
if ( ( isset( $_GET['cert_lang'] ) ) && ( ! empty( $_GET['cert_lang'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$config_lang_tmp = substr( esc_attr( sanitize_text_field( wp_unslash( $_GET['cert_lang'] ) ) ), 0, 3 ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
} elseif ( ( isset( $_GET['lang'] ) ) && ( ! empty( $_GET['lang'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$config_lang_tmp = substr( esc_attr( sanitize_text_field( wp_unslash( $_GET['lang'] ) ) ), 0, 3 ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
if ( ( ! empty( $config_lang_tmp ) ) && ( strlen( $config_lang_tmp ) === 3 ) ) {
$ld_cert_lang_dir = LEARNDASH_LMS_LIBRARY_DIR . '/tcpdf/config/lang';
$lang_files = array_diff( scandir( $ld_cert_lang_dir ), array( '..', '.' ) );
if ( ( ! empty( $lang_files ) ) && ( is_array( $lang_files ) ) && ( in_array( $config_lang_tmp, $lang_files, true ) ) && ( file_exists( $ld_cert_lang_dir . '/' . $config_lang_tmp . '.php' ) ) ) {
$cert_args['lang'] = $config_lang_tmp;
}
}
$target_post_id = 0;
$cert_args['filename_type'] = 'title';
$logo_file = '';
$logo_enable = '';
$logo_width = '';
$subsetting_enable = '';
$filters = '';
$header_enable = '';
$footer_enable = '';
$monospaced_font = '';
$font = '';
$font_size = '';
$destination = 'I';
$destination_type = 'U';
ob_start();
$cert_args['cert_title'] = $cert_args['cert_post']->post_title;
$cert_args['cert_title'] = wp_strip_all_tags( $cert_args['cert_title'] );
/** This filter is documented in https://developer.wordpress.org/reference/hooks/document_title_separator/ */
$sep = apply_filters( 'document_title_separator', '-' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound -- WP Core Hook
/**
* Filters username of the user to be used in creating certificate PDF.
*
* @param string $user_name User display name.
* @param int $user_id User ID.
* @param int $cert_id Certificate post ID.
*/
$learndash_pdf_username = apply_filters( 'learndash_pdf_username', $cert_args['user']->display_name, $cert_args['user_id'], $cert_args['cert_id'] );
if ( ! empty( $learndash_pdf_username ) ) {
if ( ! empty( $cert_args['pdf_title'] ) ) {
$cert_args['pdf_title'] .= " $sep ";
}
$cert_args['pdf_title'] .= $learndash_pdf_username;
}
$cert_for_post_title = get_the_title( $cert_args['post_id'] );
wp_strip_all_tags( $cert_for_post_title );
if ( ! empty( $cert_for_post_title ) ) {
if ( ! empty( $cert_args['pdf_title'] ) ) {
$cert_args['pdf_title'] .= " $sep ";
}
$cert_args['pdf_title'] .= $cert_for_post_title;
}
if ( ! empty( $cert_args['pdf_title'] ) ) {
$cert_args['pdf_title'] .= " $sep ";
}
$cert_args['pdf_title'] .= $cert_args['cert_title'];
if ( ! empty( $cert_args['pdf_title'] ) ) {
$cert_args['pdf_title'] .= " $sep ";
}
$cert_args['pdf_title'] .= get_bloginfo( 'name', 'display' );
$cert_args['cert_permalink'] = get_permalink( $cert_args['cert_post']->ID );
$cert_args['pdf_author_name'] = $cert_args['user']->display_name;
$tags_array = array();
$cert_args['pdf_keywords'] = '';
$tags_data = wp_get_post_tags( $cert_args['cert_post']->ID );
if ( $tags_data ) {
foreach ( $tags_data as $val ) {
$tags_array[] = $val->name;
}
$cert_args['pdf_keywords'] = implode( ' ', $tags_array );
}
if ( ! empty( $_GET['file'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$cert_args['filename_type'] = sanitize_text_field( wp_unslash( $_GET['file'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
if ( 'title' === $cert_args['filename_type'] ) {
$filename = sanitize_file_name( str_replace( " $sep ", "$sep", $cert_args['pdf_title'] ) );
/**
* Filters the file name of the certificate pdf.
*
* @param string $filename Name of the pdf file.
* @param int $cert_id Certificate post ID.
*/
$filename = apply_filters( 'learndash_pdf_filename', $filename, $cert_args['cert_id'] );
} else {
$filename = $cert_args['cert_id'] . '.pdf';
}
$filename = basename( $filename );
$filename = substr( $filename, 0, 255 );
$filename = sanitize_file_name( $filename );
$cached_filename = '';
$query_string_params_supported = array( 'font', 'monospaced', 'fontsize', 'subsetting', 'ratio', 'header', 'logo', 'logo_file', 'logo_width', 'footer', 'destination', 'destination_type' );
$query_string_params_allowed = array( 'destination', 'destination_type' );
/**
* Filter for allowed PDF Certificate parameters.
*
* @since 3.4.1
*
* @param array $query_string_params_allowed Array of allowed query string params.
* @param array $query_string_params_supported Array of supported query string params.
*/
$query_string_params_allowed = apply_filters( 'learndash_certificate_query_string_params_allowed', $query_string_params_allowed, $query_string_params_supported );
if ( ! is_array( $query_string_params_allowed ) ) {
$query_string_params_allowed = array();
}
$query_string_params_allowed = array_intersect( $query_string_params_allowed, $query_string_params_supported );
if ( in_array( 'font', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['font'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$font = esc_html( sanitize_text_field( wp_unslash( $_GET['font'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'monospaced', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['monospaced'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$monospaced_font = esc_html( sanitize_text_field( wp_unslash( $_GET['monospaced'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'fontsize', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['fontsize'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$font_size = intval( sanitize_text_field( wp_unslash( $_GET['fontsize'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'subsetting', $query_string_params_allowed, true ) ) {
if ( ! empty( sanitize_text_field( wp_unslash( $_GET['subsetting'] ) ) ) && ( 1 === $_GET['subsetting'] || 0 === $_GET['subsetting'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$subsetting_enable = sanitize_text_field( wp_unslash( $_GET['subsetting'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( $subsetting_enable ) {
$subsetting = true;
} else {
$subsetting = false;
}
if ( in_array( 'ratio', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['ratio'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$cert_args['ratio'] = floatval( $_GET['ratio'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'header', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['header'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$header_enable = sanitize_text_field( wp_unslash( $_GET['header'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'logo', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['logo'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$logo_enable = sanitize_text_field( wp_unslash( $_GET['logo'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'logo_file', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['logo_file'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$logo_file = esc_html( sanitize_text_field( wp_unslash( $_GET['logo_file'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'logo_width', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['logo_width'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$logo_width = intval( $_GET['logo_width'] ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'footer', $query_string_params_allowed, true ) ) {
if ( ! empty( $_GET['footer'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$footer_enable = sanitize_text_field( wp_unslash( $_GET['footer'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
}
}
if ( in_array( 'destination', $query_string_params_allowed, true ) ) {
if ( ( isset( $_GET['destination'] ) ) && ( ! empty( $_GET['destination'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( 'F' === $_GET['destination'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$destination = 'F';
} else {
$destination = 'I';
}
} else {
$destination = 'I';
}
}
if ( in_array( 'destination_type', $query_string_params_allowed, true ) ) {
if ( 'F' === $destination ) {
if ( ( isset( $_GET['destination_type'] ) ) && ( ! empty( $_GET['destination_type'] ) ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( 'F' === $_GET['destination_type'] ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$destination_type = 'F';
} else {
$destination_type = 'U';
}
}
}
}
if ( 'F' === $destination ) {
if ( ( defined( 'LEARNDASH_UPLOADS_BASE_URL' ) ) && ( ! empty( LEARNDASH_UPLOADS_BASE_URL ) ) ) {
$cert_args['filename_url'] = LEARNDASH_UPLOADS_BASE_URL . '/certificates/' . $filename;
}
if ( ( defined( 'LEARNDASH_UPLOADS_BASE_DIR' ) ) && ( ! empty( LEARNDASH_UPLOADS_BASE_DIR ) ) && ( file_exists( LEARNDASH_UPLOADS_BASE_DIR ) ) && ( is_writable( LEARNDASH_UPLOADS_BASE_DIR ) ) ) {
$ld_upload_certificates_dir = trailingslashit( LEARNDASH_UPLOADS_BASE_DIR ) . 'certificates';
if ( ! file_exists( $ld_upload_certificates_dir ) ) {
if ( wp_mkdir_p( $ld_upload_certificates_dir ) !== false ) {
// To prevent security browsing add an index.php file.
learndash_put_directory_index_file( trailingslashit( $ld_upload_certificates_dir ) . 'index.php' );
}
}
$filename = trailingslashit( $ld_upload_certificates_dir ) . $filename;
}
}
/**
* Start Cert post content processing.
*/
if ( ! defined( 'LEARNDASH_TCPDF_LEGACY_LD322' ) ) {
$use_LD322_define = apply_filters( 'learndash_tcpdf_legacy_ld322', true, $cert_args ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
/**
* Define LearnDash LMS - Set to enable legacy TCPDF processing logic.
*
* LD 3.2.0 includes an upgrade of the TCPDF library for generating PDF
* Certificates. The newer TCPDF library includes some improvements which
* cause the rendering to not match the prior version of the library. This
* define if set to `true` will enable legacy logic in the new library.
*
* @since 3.2.2
*
* @var bool $use_LD322_define true When enabling legacy logic.
*/
define( 'LEARNDASH_TCPDF_LEGACY_LD322', $use_LD322_define ); // phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
}
$cert_content = $cert_args['cert_post']->post_content;
// Delete shortcode for POST2PDF Converter.
$cert_content = preg_replace( '|\[pdf[^\]]*?\].*?\[/pdf\]|i', '', $cert_content );
$cert_content = do_shortcode( $cert_content );
// Convert relative image path to absolute image path.
$cert_content = preg_replace( "/<img([^>]*?)src=['\"]((?!(http:\/\/|https:\/\/|\/))[^'\"]+?)['\"]([^>]*?)>/i", '<img$1src="' . site_url() . '/$2"$4>', $cert_content );
// Set image align to center.
$cert_content = preg_replace_callback( "/(<img[^>]*?class=['\"][^'\"]*?aligncenter[^'\"]*?['\"][^>]*?>)/i", 'learndash_post2pdf_conv_image_align_center', $cert_content );
// Add width and height into image tag.
$cert_content = preg_replace_callback( "/(<img[^>]*?src=['\"]((http:\/\/|https:\/\/|\/)[^'\"]*?(jpg|jpeg|gif|png))['\"])([^>]*?>)/i", 'learndash_post2pdf_conv_img_size', $cert_content );
if ( ( ! defined( 'LEARNDASH_TCPDF_LEGACY_LD322' ) ) || ( true !== LEARNDASH_TCPDF_LEGACY_LD322 ) ) {
$cert_content = wpautop( $cert_content );
}
// For other source code.
$cert_content = preg_replace( '/<pre[^>]*?><code[^>]*?>(.*?)<\/code><\/pre>/is', '<pre style="word-wrap:break-word; color: #406040; background-color: #F1F1F1; border: 1px solid #9F9F9F;">$1</pre>', $cert_content );
// For blockquote.
$cert_content = preg_replace( '/<blockquote[^>]*?>(.*?)<\/blockquote>/is', '<blockquote style="color: #406040;">$1</blockquote>', $cert_content );
$cert_content = '<br/><br/>' . $cert_content;
/**
* If the $font variable is not empty we use it to replace all font
* definitions. This only affects inline styles within the structure
* of the certificate content HTML elements.
*/
if ( ! empty( $font ) ) {
$cert_content = preg_replace( '/(<[^>]*?font-family[^:]*?:)([^;]*?;[^>]*?>)/is', '$1' . $font . ',$2', $cert_content );
}
if ( ( defined( 'LEARNDASH_TCPDF_LEGACY_LD322' ) ) && ( true === LEARNDASH_TCPDF_LEGACY_LD322 ) ) {
$cert_content = preg_replace( '/\n/', '<br/>', $cert_content ); // "\n" should be treated as a next line.
}
/**
* Filters whether to include certificate CSS styles in certificate content or not.
*
* @param boolean $include_certificate_styles Whether to include certificate styles.
* @param int $cert_id Certificate post ID.
*/
if ( apply_filters( 'learndash_certificate_styles', true, $cert_args['cert_id'] ) ) {
$certificate_styles = LearnDash_Settings_Section::get_section_setting( 'LearnDash_Settings_Certificates_Styles', 'styles' );
$certificate_styles = preg_replace( '/<style[^>]*?>(.*?)<\/style>/is', '$1', $certificate_styles );
if ( ! empty( $certificate_styles ) ) {
$cert_content = '<style>' . $certificate_styles . '</style>' . $cert_content;
}
}
/**
* Filters certificate content after all processing.
*
* @since 3.2.0
*
* @param string $cert_content Certificate post content HTML/TEXT.
* @param int $cert_id Certificate post ID.
*/
$cert_content = apply_filters( 'learndash_certificate_content', $cert_content, $cert_args['cert_id'] );
/**
* Build the PDF Certificate using TCPDF.
*/
if ( ! class_exists( 'TCPDF' ) ) {
require_once LEARNDASH_LMS_LIBRARY_DIR . '/tcpdf/config/lang/' . $cert_args['lang'] . '.php';
require_once LEARNDASH_LMS_LIBRARY_DIR . '/tcpdf/tcpdf.php';
}
$learndash_certificate_options = get_post_meta( $cert_args['cert_post']->ID, 'learndash_certificate_options', true );
if ( ! is_array( $learndash_certificate_options ) ) {
$learndash_certificate_options = array( $learndash_certificate_options );
}
if ( ! isset( $learndash_certificate_options['pdf_page_format'] ) ) {
$learndash_certificate_options['pdf_page_format'] = PDF_PAGE_FORMAT;
}
if ( ! isset( $learndash_certificate_options['pdf_page_orientation'] ) ) {
$learndash_certificate_options['pdf_page_orientation'] = PDF_PAGE_ORIENTATION;
}
// Create a new object.
$tcpdf_params = array(
'orientation' => $learndash_certificate_options['pdf_page_orientation'],
'unit' => PDF_UNIT,
'format' => $learndash_certificate_options['pdf_page_format'],
'unicode' => true,
'encoding' => 'UTF-8',
'diskcache' => false,
'pdfa' => false,
'margins' => array(
'top' => PDF_MARGIN_TOP,
'right' => PDF_MARGIN_RIGHT,
'bottom' => PDF_MARGIN_BOTTOM,
'left' => PDF_MARGIN_LEFT,
),
);
/**
* Filters certificate tcpdf parameters.
*
* @since 2.4.7
*
* @param array $tcpdf_params An array of tcpdf parameters.
* @param int $cert_id Certificate post ID.
*/
$tcpdf_params = apply_filters( 'learndash_certificate_params', $tcpdf_params, $cert_args['cert_id'] );
$pdf = new TCPDF(
$tcpdf_params['orientation'],
$tcpdf_params['unit'],
$tcpdf_params['format'],
$tcpdf_params['unicode'],
$tcpdf_params['encoding'],
$tcpdf_params['diskcache'],
$tcpdf_params['pdfa']
);
// Added to let external manipulate the $pdf instance.
/**
* Fires after creating certificate `TCPDF` class object.
*
* @since 2.4.7
*
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
do_action( 'learndash_certification_created', $pdf, $cert_args['cert_id'] );
// Set document information.
/**
* Filters the value of pdf creator.
*
* @param string $pdf_creator The name of the PDF creator.
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
$pdf->setCreator( apply_filters( 'learndash_pdf_creator', PDF_CREATOR, $pdf, $cert_args['cert_id'] ) );
/**
* Filters the name of the pdf author.
*
* @param string $pdf_author_name PDF author name.
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
$pdf->setAuthor( apply_filters( 'learndash_pdf_author', $cert_args['pdf_author_name'], $pdf, $cert_args['cert_id'] ) );
/**
* Filters the title of the pdf.
*
* @param string $pdf_title PDF title.
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
$pdf->setTitle( apply_filters( 'learndash_pdf_title', $cert_args['pdf_title'], $pdf, $cert_args['cert_id'] ) );
/**
* Filters the subject of the pdf.
*
* @param string $pdf_subject PDF subject
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
$pdf->setSubject( apply_filters( 'learndash_pdf_subject', wp_strip_all_tags( get_the_category_list( ',', '', $cert_args['cert_id'] ) ), $pdf, $cert_args['cert_id'] ) );
/**
* Filters the pdf keywords.
*
* @param string $pdf_keywords PDF keywords.
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $cert_id Certificate post ID.
*/
$pdf->setKeywords( apply_filters( 'learndash_pdf_keywords', $cert_args['pdf_keywords'], $pdf, $cert_args['cert_id'] ) );
// Set header data.
if ( mb_strlen( $cert_args['cert_title'], 'UTF-8' ) < 42 ) {
$header_title = $cert_args['cert_title'];
} else {
$header_title = mb_substr( $cert_args['cert_title'], 0, 42, 'UTF-8' ) . '...';
}
if ( $header_enable ) {
if ( ! $logo_enable && $logo_file ) {
$pdf->setHeaderData( $logo_file, $logo_width, $header_title, 'by ' . $cert_args['pdf_author_name'] . ' - ' . $cert_args['cert_permalink'] );
} else {
$pdf->setHeaderData( '', 0, $header_title, 'by ' . $cert_args['pdf_author_name'] . ' - ' . $cert_args['cert_permalink'] );
}
}
// Set header and footer fonts.
if ( $header_enable ) {
$pdf->setHeaderFont( array( $font, '', PDF_FONT_SIZE_MAIN ) );
}
if ( $footer_enable ) {
$pdf->setFooterFont( array( $font, '', PDF_FONT_SIZE_DATA ) );
}
// Remove header/footer.
if ( ! $header_enable ) {
$pdf->setPrintHeader( false );
}
if ( ! $header_enable ) {
$pdf->setPrintFooter( false );
}
// Set default monospaced font.
$pdf->setDefaultMonospacedFont( $monospaced_font );
// Set margins.
$pdf->setMargins( $tcpdf_params['margins']['left'], $tcpdf_params['margins']['top'], $tcpdf_params['margins']['right'] );
if ( $header_enable ) {
$pdf->setHeaderMargin( PDF_MARGIN_HEADER );
}
if ( $footer_enable ) {
$pdf->setFooterMargin( PDF_MARGIN_FOOTER );
}
// Set auto page breaks.
$pdf->setAutoPageBreak( true, $tcpdf_params['margins']['bottom'] );
// Set image scale factor.
if ( ! empty( $cert_args['ratio'] ) ) {
$pdf->setImageScale( $cert_args['ratio'] );
}
// Set fontsubsetting mode.
$pdf->setFontSubsetting( $subsetting );
// Set font.
if ( ( ! empty( $font ) ) && ( ! empty( $font_size ) ) ) {
$pdf->setFont( $font, '', $font_size, '' );
}
// Add a page.
$pdf->AddPage();
// Added to let external manipulate the $pdf instance.
/**
* Fires after setting certificate pdf data.
*
* @since 2.4.7
*
* @param TCPDF $pdf `TCPDF` class instance.
* @param int $post_id Post ID.
*/
do_action( 'learndash_certification_after', $pdf, $cert_args['cert_id'] );
// get featured image.
$img_file = learndash_get_thumb_path( $cert_args['cert_id'] );
// Only print image if it exists.
if ( '' !== $img_file ) {
/**
* Fires when thumbnail image processing starts.
*
* @since 3.3.0
*
* @param string $img_file Thumbnail image file.
* @param array $cert_args Array of Certificate args.
* @param TCPDF $pdf `TCPDF` class instance.
*/
do_action( 'learndash_certification_thumbnail_processing_start', $img_file, $cert_args, $pdf );
// Print BG image.
$pdf->setPrintHeader( false );
// get the current page break margin.
$b_margin = $pdf->getBreakMargin();
// get current auto-page-break mode.
$auto_page_break = $pdf->getAutoPageBreak();
// disable auto-page-break.
$pdf->setAutoPageBreak( false, 0 );
// Get width and height of page for dynamic adjustments.
$page_h = $pdf->getPageHeight();
$page_w = $pdf->getPageWidth();
/**
* Fires before the thumbnail image is added to the PDF.
*
* @since 3.3.0
*
* @param string $img_file Thumbnail image file.
* @param array $cert_args Array of Certificate args.
* @param TCPDF $pdf `TCPDF` class instance.
*/
do_action( 'learndash_certification_thumbnail_before', $img_file, $cert_args, $pdf );
// Print the Background.
$pdf->Image( $img_file, 0, 0, $page_w, $page_h, '', '', '', false, 300, '', false, false, 0, false, false, false, false, array() );
/**
* Fires after the thumbnail image is added to the PDF.
*
* @since 3.3.0
*
* @param string $img_file Thumbnail image file.
* @param array $cert_args Array of Certificate args.
* @param TCPDF $pdf `TCPDF` class instance.
*/
do_action( 'learndash_certification_thumbnail_after', $img_file, $cert_args, $pdf );
// restore auto-page-break status.
$pdf->setAutoPageBreak( $auto_page_break, $b_margin );
// set the starting point for the page content.
$pdf->setPageMark();
/**
* Fires when thumbnail image processing starts.
*
* @since 3.3.0
*
* @param string $img_file Thumbnail image file.
* @param array $cert_args Array of Certificate args.
* @param TCPDF $pdf `TCPDF` class instance.
*/
do_action( 'learndash_certification_thumbnail_processing_end', $img_file, $cert_args, $pdf );
}
/**
* Fires before the certificate content is added to the PDF.
*
* @since 3.3.0
*
* @param TCPDF $pdf `TCPDF` class instance.
* @param array $cert_args Array of certificate args.
*/
do_action( 'learndash_certification_content_write_cell_before', $pdf, $cert_args );
$pdf_cell_args = array(
'w' => 0,
'h' => 0,
'x' => '',
'y' => '',
'content' => $cert_content,
'border' => 0,
'ln' => 1,
'fill' => 0,
'reseth' => true,
'align' => '',
'autopadding' => true,
);
/**
* Filters the parameters passed to the TCPDF writeHTMLCell() function.
*
* @since 3.3.0
*
* @param array $pdf_cell_args See TCPDF function writeHTMLCell() parameters
* @param array $cert_args Array of certificate args.
* @param array $tcpdf_params An array of tcpdf parameters.
* @param TCPDF $pdf `TCPDF` class instance.
*/
$pdf_cell_args = apply_filters( 'learndash_certification_content_write_cell_args', $pdf_cell_args, $cert_args, $tcpdf_params, $pdf );
// Print post.
$pdf->writeHTMLCell(
$pdf_cell_args['w'],
$pdf_cell_args['h'],
$pdf_cell_args['x'],
$pdf_cell_args['y'],
$pdf_cell_args['content'],
$pdf_cell_args['border'],
$pdf_cell_args['ln'],
$pdf_cell_args['fill'],
$pdf_cell_args['reseth'],
$pdf_cell_args['align'],
$pdf_cell_args['autopadding']
);
/**
* Fires after the certificate content is added to the PDF.
*
* @since 3.3.0
*
* @param TCPDF $pdf `TCPDF` class instance.
* @param array $cert_args Array of certificate args.
*/
do_action( 'learndash_certification_content_write_cell_after', $pdf, $cert_args );
// Set background.
$pdf->setFillColor( 255, 255, 127 );
$pdf->setCellPaddings( 0, 0, 0, 0 );
// Print signature.
ob_clean();
// Output pdf document.
$pdf->Output( $filename . '.pdf', $destination );
if ( 'F' === $destination ) {
if ( 'F' === $destination_type ) {
echo $filename; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
} else {
echo $cert_args['filename_url']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
}
}
}