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<?php |
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/** |
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* Plugin Name: PDF Ink Lite |
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* Plugin URI: https://wordpress.org/plugins/waterwoo-pdf/ |
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* Description: Custom watermark your PDF files upon WooCommerce, Download Monitor, and Easy Digital Download customer download. Since 2014. FKA "WaterWoo" |
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* Version: 4.1.4 |
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* Author: Canyon Webworks |
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* Author URI: https://pdfink.com/ |
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* Donate link: https://paypal.me/canyonwebworks |
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* WC requires at least: 8.2 |
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* WC tested up to: 11.1 |
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* |
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* License: GPLv3 or later |
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* License URI: https://www.gnu.org/licenses/gpl-3.0.html |
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* |
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* Text Domain: waterwoo-pdf |
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* Domain path: /lang |
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* |
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* Copyright 2013-2026 Canyon Webworks |
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* |
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* This file is part of PDF Ink Lite, a plugin for WordPress. If |
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* it benefits you, please support my volunteer work |
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* |
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* https://paypal.me/canyonwebworks or/and venmo.com/canyonwebworks |
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* |
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* leave a nice review at: |
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* |
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* https://wordpress.org/support/view/plugin-reviews/waterwoo-pdf?filter=5 |
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* |
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* Thank you. 😊 |
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* |
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* PDF Ink Lite is free software: You can redistribute it and/or modify |
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* it under the terms of the GNU General Public |
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* License as published by the Free Software Foundation, either |
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* version 3 of the License, or (at your option) any later version. |
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* |
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* PDF Ink Lite is distributed in the hope that it will |
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* be useful, but WITHOUT ANY WARRANTY; without even the |
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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* PURPOSE. See the GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with WordPress. If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @todo maybe remove deprecated filters |
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* @todo regenerate lang files |
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* |
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*/ |
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defined( 'ABSPATH' ) || exit; |
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|
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if ( ! defined( 'WWPDF_FREE_VERSION' ) ) { |
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define( 'WWPDF_FREE_VERSION', '4.1.4' ); |
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} |
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|
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if ( ! defined( 'WWPDF_FREE_MIN_PHP' ) ) { |
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define( 'WWPDF_FREE_MIN_PHP', '7.4' ); |
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} |
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|
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if ( ! defined( 'WWPDF_FREE_MIN_WP' ) ) { |
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define( 'WWPDF_FREE_MIN_WP', '7.0' ); |
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} |
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|
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if ( ! defined( 'WWPDF_FREE_MIN_WC' ) ) { |
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define( 'WWPDF_FREE_MIN_WC', '8.2' ); |
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} |
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|
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if ( ! defined( 'WWPDF_FILE' ) ) { |
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define( 'WWPDF_FILE', __FILE__ ); |
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} |
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|
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if ( ! defined( 'WWPDF_PATH' ) ) { |
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define( 'WWPDF_PATH', plugin_dir_path( __FILE__ ) ); |
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} |
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|
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if ( ! defined( 'PDFINK_LITE_UPLOADS_PATH' ) ) { |
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$upload_dir = wp_upload_dir(); |
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$new_path = trailingslashit( $upload_dir['basedir'] ) . 'pdf-ink'; |
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$old_path = trailingslashit( WP_CONTENT_DIR ) . 'uploads/pdf-ink'; |
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if ( ! is_dir( $new_path ) && is_dir( $old_path ) ) { |
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$final_path = $old_path; |
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} else { |
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$final_path = $new_path; |
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} |
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define( 'PDFINK_LITE_UPLOADS_PATH', trailingslashit( $final_path ) ); |
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if ( ! wp_mkdir_p( PDFINK_LITE_UPLOADS_PATH ) ) { |
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add_action( 'admin_notices', 'pdfink_lite_need_wp_content_dir_access_notice' ); |
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} |
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} |
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|
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class WaterWooPDF { |
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|
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private static $instance = false; |
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|
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/** |
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* @return bool|WaterWooPDF |
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*/ |
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public static function get_instance() { |
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if ( ! self::$instance ) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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|
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/** |
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* Constructor |
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*/ |
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public function __construct() { |
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|
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$this->update_db(); |
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$this->includes(); |
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|
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if ( is_admin() ) { |
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// Backend settings |
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new WWPDF_Settings(); |
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|
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// Check if WooCommerce is enabled |
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if ( class_exists( 'WooCommerce' ) ) { |
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// Check WooCommerce version |
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if ( defined( 'WC_VERSION' ) && version_compare( WC_VERSION, WWPDF_FREE_MIN_WC, '<' ) ) { |
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add_action( 'admin_notices', 'wwpdf_old_woo_notice' ); |
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} else { |
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// Add a tab to the WooCommerce settings page |
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add_filter( 'woocommerce_get_settings_pages', function( $s ) { |
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$s[] = include WWPDF_PATH . 'classes/wwpdf-settings-woo.php'; |
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return $s; |
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}, 10, 1 ); |
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} |
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|
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} |
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|
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if ( class_exists( 'Easy_Digital_Downloads' ) ) { |
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new WWPDF_Settings_EDD(); |
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} |
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|
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if ( class_exists( 'WP_DLM' ) ) { |
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new WWPDF_Settings_DLM(); |
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} |
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|
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} |
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|
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// Download/error logging |
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$GLOBALS['wwpdf_logs'] = new WWPDF_Logging(); |
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|
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// Only run when downloading |
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if ( ! is_admin() ) { |
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new WWPDF_Free_File_Handler(); |
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} |
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|
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} |
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|
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/** |
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* Cloning is forbidden. |
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*/ |
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public function __clone() { |
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_doing_it_wrong( __FUNCTION__, __( 'Cloning is forbidden.', 'waterwoo-pdf' ), WWPDF_FREE_VERSION ); |
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} |
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|
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/** |
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* Unserializing instances of this class is forbidden. |
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*/ |
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public function __wakeup() { |
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_doing_it_wrong( __FUNCTION__, __( 'Unserializing instances of this class is forbidden.', 'waterwoo-pdf' ), WWPDF_FREE_VERSION ); |
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} |
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|
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/** |
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* Import and convert PDF Ink settings to match paid plugin setting names |
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* |
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* @return void |
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*/ |
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private function update_db() { |
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|
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delete_option( 'wwpdf_donate_dismiss_08-28' ); |
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|
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if ( 'dejavu' === get_option( 'wwpdf_font_premium' ) ) { |
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update_option( 'wwpdf_font_premium', 'dejavusanscondensed' ); |
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} |
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if ( $global = get_option( 'wwpdf_enable' ) ) { |
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update_option( 'wwpdf_global', $global ); |
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delete_option( 'wwpdf_enable' ); |
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} |
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if ( $footer_input = get_option( 'wwpdf_footer_input' ) ) { |
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update_option( 'wwpdf_footer_input_premium', $footer_input ); |
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delete_option( 'wwpdf_footer_input' ); |
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} |
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|
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if ( $font = get_option( 'wwpdf_font' ) ) { |
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update_option( 'wwpdf_font_premium', $font ); |
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delete_option( 'wwpdf_font' ); |
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} |
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|
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if ( $footer_size = get_option( 'wwpdf_footer_size' ) ) { |
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update_option( 'wwpdf_footer_size_premium', $footer_size ); |
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delete_option( 'wwpdf_footer_size' ); |
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} |
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|
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if ( $footer_color = get_option( 'wwpdf_footer_color' ) ) { |
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update_option( 'wwpdf_footer_color_premium', $footer_color ); |
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delete_option( 'wwpdf_footer_color' ); |
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} |
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if ( $footer_y = get_option( 'wwpdf_footer_y' ) ) { |
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update_option( 'wwpdf_footer_finetune_Y_premium', $footer_y ); |
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delete_option( 'wwpdf_footer_y' ); |
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} |
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|
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} |
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|
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/** |
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* @return void |
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*/ |
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public function includes() { |
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|
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include_once WWPDF_PATH . 'classes/wwpdf-logging.php'; |
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include_once WWPDF_PATH . 'classes/wwpdf-settings.php'; |
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include_once WWPDF_PATH . 'classes/wwpdf-settings-dlm.php'; |
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include_once WWPDF_PATH . 'classes/wwpdf-settings-edd.php'; |
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include_once WWPDF_PATH . 'classes/wwpdf-file-handler.php'; |
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include_once WWPDF_PATH . 'classes/wwpdf-watermark.php'; |
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|
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} |
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|
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} |
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|
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if ( function_exists('is_plugin_active' ) ) { |
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if ( is_plugin_active( 'waterwoo-pdf-premium/waterwoo-pdf-premium.php' ) |
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|| is_plugin_active( 'pdf-ink/pdf-ink.php' ) ) { |
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wp_die( 'Before activating PDF Ink Lite, please deactivate WaterWoo PDF Premium, or PDF Ink if active. Use one or the other.', 'ERROR', [ 'back_link' => true ] ); |
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} |
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if ( is_plugin_active( 'woocommerce-pdf-watermark/woocommerce-pdf-watermark.php' ) ) { |
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wp_die( 'Before activating PDF Ink Lite, please deactivate WooCommerce PDF Watermark. Unfortunately, WooCommerce created a clash by using our namespaced TCPDF code.', 'ERROR', [ 'back_link' => true ] ); |
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} |
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} |
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|
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function WWPDF_Free() { |
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return WaterWooPDF::get_instance(); |
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} |
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|
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function wwpdf_old_php_notice() { |
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echo '<div class="error"><p>' . sprintf( __( 'PDF Ink Lite supports PHP %s or later. Please update PHP on your server for better overall results.', 'waterwoo-pdf' ), WWPDF_FREE_MIN_PHP ) . '</p></div>'; |
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} |
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|
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function wwpdf_old_wp_notice() { |
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echo '<div class="error"><p>' . sprintf( __( 'PDF Ink Lite supports WordPress version %s or later. Please update WordPress to use this plugin.', 'waterwoo-pdf' ), WWPDF_FREE_MIN_WP ) . '</p></div>'; |
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} |
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|
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function wwpdf_old_woo_notice() { |
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echo '<div class="error"><p>' . sprintf( __( 'Sorry, PDF Ink Lite supports WooCommerce version %s or newer, for security reasons.', 'waterwoo-pdf' ), WWPDF_FREE_MIN_WC ) . '</p></div>'; |
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} |
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|
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function pdfink_lite_need_wp_content_dir_access_notice() { |
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echo '<div class="error"><p>' . __( 'PDF Ink Lite requires that the directory defined by <code>PDFINK_LITE_UPLOADS_PATH</code> (usually `<strong>wp-content/uploads/pdf-ink/</strong>`) is writable.', 'waterwoo-pdf' ) . '</p></div>'; |
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} |
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|
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function pdfink_cta_tb( $value ) { |
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|
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add_thickbox(); |
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$svg_url = plugins_url('assets/svg/pdfink-lite-sprite.svg#pdf-lover', __FILE__ ); |
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echo '<style>.wc-settings-row-muted,.settings-row-muted{opacity:50%;}</style> |
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<div id="pdfink-upgrade-tb" style="display:none;"> |
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<div style="display:flex;align-items:center;justify-content:space-between;padding:1.5em;gap:20px;"> |
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<div> |
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<a href="https://pdfink.com/?source=wordpress" rel="noopener" target="_blank"><svg width="300px" height="225px"><use href="' . esc_url( $svg_url ) . '" /></svg></a> |
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</div> |
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<div style="text-align:center"> |
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<h2>Unlock the full potential of PDF Ink</h2> |
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<p style="font-size:1.25em;"> |
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Settings marked with a key <span class="dashicons dashicons-admin-network pdfink-upgrade" style="vertical-align:middle;"></span> are available in the full (paid) version of PDF Ink. |
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</p> |
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<p style="font-size:1.5em;font-weight:700;"> |
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Visit <a href="https://pdfink.com/?source=wordpress" rel="noopener" target="_blank">pdfink.com</a> to upgrade! |
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</p> |
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</div> |
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</div> |
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</div>'; |
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|
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} |
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|
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/** |
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* Logs a message to the debug log file |
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* |
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* @since 2.8.7 |
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* @since 2.9.4 Added the 'force' option. |
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* |
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* @param string $message |
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* @global $wwpdf_logs WWPDF_Logging Object |
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* @return void |
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*/ |
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function wwpdf_debug_log( string $message = '' ) { |
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|
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if ( 'no' === get_option( 'wwpdf_debug_mode', 'no' ) ) { |
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return; |
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} |
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|
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global $wwpdf_logs; |
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if ( function_exists( 'mb_convert_encoding' ) ) { |
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$message = mb_convert_encoding( $message, 'UTF-8' ); |
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} |
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$wwpdf_logs->log_to_file( $message ); |
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|
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} |
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|
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function pdfink_log_output() { ?> |
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|
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<p> |
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<?php esc_html_e( 'Watermarking events and errors will be saved to a file in your /wp-content/ folder. You can view the contents below.', 'waterwoo-pdf' ); ?> |
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<br> |
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<?php esc_html_e( 'Maybe only turn this on for troubleshooting because this file can get large.', 'waterwoo-pdf' ); ?> |
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</p> |
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<?php $debug_on = get_option( 'wwpdf_debug_mode', 'no' ); |
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if ( '1' !== $debug_on && 'yes' !== $debug_on ) { |
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return; |
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} |
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global $wwpdf_logs; ?> |
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|
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<div class="wrap"> |
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<h3><span><?php esc_html_e( 'Logs', 'waterwoo-pdf' ); ?></span></h3> |
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<label for="wwpdf-log-textarea"><?php esc_html_e( 'Use this tool to help debug TCPDI/TCPDF and PDF Ink functionality.', 'waterwoo-pdf' ); ?></label> |
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<textarea readonly="readonly" id="wwpdf-log-textarea" class="large-text" rows="16" name="wwpdf-debug-log-contents"><?php echo esc_textarea( $wwpdf_logs->get_file_contents() ); ?></textarea> |
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<input type="hidden" name="wwpdf_action" value="submit_debug_log"> |
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<?php wp_nonce_field( 'wwpdf-logging-nonce', 'wwpdf_logging_nonce' ); ?> |
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<p class="submit"> |
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<?php |
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submit_button( __( 'Download Debug Log File', 'waterwoo-pdf' ), 'primary', 'wwpdf-download-debug-log', false ); ?> <?php |
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submit_button( __( 'Clear Log', 'waterwoo-pdf' ), 'secondary', 'wwpdf-clear-debug-log', false ); ?> <?php |
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submit_button( __( 'Copy Entire Log', 'waterwoo-pdf' ), 'secondary', 'wwpdf-copy-debug-log', false, [ 'onclick' => "this.form['wwpdf-debug-log-contents'].focus();this.form['wwpdf-debug-log-contents'].select();document.execCommand('copy');return false;" ] ); |
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?> |
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</p> |
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<p> |
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<?php _e( 'Log file', 'waterwoo-pdf' ); ?>: <code><?php echo esc_html( $wwpdf_logs->get_log_file_path() ); ?></code> |
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</p> |
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</div> |
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|
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<?php |
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|
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} |
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|
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/** |
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* Get "more info" section settings array |
| 338 |
* |
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* @return void |
| 340 |
*/ |
| 341 |
function pdfink_more_info_screen() { |
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$svg_url = plugins_url('assets/svg/pdfink-lite-sprite.svg#pdf-download', __FILE__ ); ?> |
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|
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<div style="margin:3em"> |
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<p style="font-size: 2em;"> |
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<?php _e( 'Hi, I\'m Caroline.', 'waterwoo-pdf' ); ?> 🖖🏼 |
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</p> |
| 348 |
<p style="font-size: 1.75em;"> |
| 349 |
<?php _e( 'I\'ve kept the PDF Ink Lite plugin in active development since 2014 as an unpaid volunteer.', 'waterwoo-pdf' ); ?> |
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<br> |
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<?php echo sprintf( __( 'If you enjoy the free version, <a href="%s" target="_blank" rel="noopener">upgrade to the full version of PDF Ink</a> for even more great features!', 'waterwoo-pdf' ), 'https://pdfink.com/?source=wordpress' ); ?> |
| 352 |
</p> |
| 353 |
<h2 style="font-size:3em;margin-bottom:0"><?php _e( 'Upgrade Features:', 'waterwoo-pdf' ); ?></h2> |
| 354 |
<div style="display:flex;align-items:center;justify-content:space-between;padding:1.5em;gap:20px;"> |
| 355 |
<div> |
| 356 |
<ul style="list-style:circle;margin-left:30px;margin-top:0;font-size: 1.33em;"> |
| 357 |
<li>Works with <strong>any</strong> PDF |
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<li>Full watermark page and position control |
| 359 |
<li>More watermark positions, anywhere on the page, more than one |
| 360 |
<li>Upload your own TTF <strong>fonts</strong> |
| 361 |
<li>RTL |
| 362 |
<li>Watermark <strong>opacity</strong> control |
| 363 |
<li>Extended magic <strong>shortcodes</strong> for customized marks, including billing address |
| 364 |
information, order number, product name, future dates, and copies purchased |
| 365 |
<li>Full PDF <strong>password</strong> protection, encryption & permissions control |
| 366 |
<li>Add <strong>barcodes</strong> and QR codes to PDFs |
| 367 |
<li>Backend <strong>test watermarking</strong> of PDFs on-the-fly |
| 368 |
<li><strong>Per-product</strong> and variable product watermarking settings |
| 369 |
<li>Embed customized/encrypted PDF files on the page |
| 370 |
<li>Unzip archives and mark chosen PDFs inside |
| 371 |
<li>Automatic, scheduled file cleanup |
| 372 |
<li>Support for <strong>externally hosted files (like Amazon S3)</strong> |
| 373 |
<li>Compatible with FPDI PDF-Parser and SetaPDF-Stamper from SetaSign |
| 374 |
<li>Compatibility with <strong>Free Downloads WooCommerce</strong>, <strong>WooCommerce Bulk |
| 375 |
Downloads</strong>, and <strong>EDD Free Downloads</strong> |
| 376 |
<li>PDF Ink works even without WordPress, allowing you to easily integrate |
| 377 |
<strong>SetaPDF-Stamper</strong> or <strong>FPDI PDF-Parser</strong> and FPDF/TCPDF into any |
| 378 |
PHP-based website! |
| 379 |
<li><?php echo sprintf( __( 'Priority email support, <a href="%s" target="_blank" rel="noopener">and more!</a>', 'waterwoo-pdf' ), 'https://pdfink.com/#features' ) ?> |
| 380 |
</ul> |
| 381 |
</div> |
| 382 |
<div> |
| 383 |
<a href="https://pdfink.com/?source=wordpress" rel="noopener" target="_blank"> |
| 384 |
<svg width="300px" height="210px"> |
| 385 |
<use href="<?php echo esc_url( $svg_url ); ?>"/> |
| 386 |
</svg> |
| 387 |
</a> |
| 388 |
</div> |
| 389 |
</div> |
| 390 |
<h2 style="font-size:3em;margin-bottom:0"><?php esc_html_e( 'Can\'t Upgrade? Support My Work Another Way!', 'waterwoo-pdf' ); ?></h2> |
| 391 |
|
| 392 |
<p style="font-size: 1.5em;"> |
| 393 |
<?php echo sprintf( __( 'If PDF Ink is not in your budget, please take a moment to write <a href="%s" target="_blank" rel="noopener">an encouraging review</a>, or <a href="%s" target="_blank" rel="noopener noreferrer">donate a couple dollars using PayPal</a> or <a href="%s" target="_blank" rel="noopener noreferrer">Venmo</a> to cover my coffee today.', 'waterwoo-pdf' ), 'https://wordpress.org/support/plugin/waterwoo-pdf/reviews/', |
| 394 |
'https://www.paypal.com/paypalme/canyonwebworks', |
| 395 |
'https://www.venmo.com/canyonwebworks'); ?> |
| 396 |
☕️ |
| 397 |
😋️ <br><?php esc_html_e( 'Your kindness and enthusiasm makes donating my time to this open-source project worthwhile!', 'waterwoo-pdf' ); ?> |
| 398 |
</p> |
| 399 |
<h2 style="font-size:3em;margin-bottom:0"><?php esc_html_e( 'Need help?', 'waterwoo-pdf' ); ?></h2> |
| 400 |
<p style="font-size: 2em;"> |
| 401 |
<?php echo sprintf( __( 'Please refer to the <a href="%s" target="_blank" rel="noopener">FAQ</a> and <a href="%s" target="_blank" rel="noopener nofollow">support forum</a> where your question might already be answered. <a href="%s" rel="noopener" target="_blank">Read this before posting</a>.', 'waterwoo-pdf' ), 'https://wordpress.org/plugins/waterwoo-pdf/#faq-header', 'https://wordpress.org/support/plugin/waterwoo-pdf/', 'https://wordpress.org/support/topic/before-you-post-2026-support-tips-please-read/' ); ?> <?php esc_html_e( 'I only provide email support for paying customers. Thank you!', 'waterwoo-pdf' ); ?> |
| 402 |
✌️ |
| 403 |
</p> |
| 404 |
</div> |
| 405 |
|
| 406 |
<?php } |
| 407 |
|
| 408 |
|
| 409 |
/** |
| 410 |
* Checks for compatibility and maybe fires up the plugin |
| 411 |
* |
| 412 |
* @return void |
| 413 |
*/ |
| 414 |
function wwpdf_plugins_loaded() { |
| 415 |
|
| 416 |
// Check PHP version |
| 417 |
if ( version_compare( PHP_VERSION, WWPDF_FREE_MIN_PHP, '<' ) ) { |
| 418 |
add_action( 'admin_notices', 'wwpdf_old_php_notice' ); |
| 419 |
return; |
| 420 |
} |
| 421 |
// Check WordPress version |
| 422 |
if ( version_compare( get_bloginfo( 'version' ), WWPDF_FREE_MIN_WP, '<' ) ) { |
| 423 |
add_action( 'admin_notices', 'wwpdf_old_wp_notice' ); |
| 424 |
return; |
| 425 |
} |
| 426 |
|
| 427 |
/** |
| 428 |
* Declare compatibility with HPOS |
| 429 |
* @return void |
| 430 |
*/ |
| 431 |
add_action( 'before_woocommerce_init', function() { |
| 432 |
if ( class_exists( \Automattic\WooCommerce\Utilities\FeaturesUtil::class ) ) { |
| 433 |
\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'custom_order_tables', __FILE__, true ); |
| 434 |
\Automattic\WooCommerce\Utilities\FeaturesUtil::declare_compatibility( 'cart_checkout_blocks', __FILE__, true ); |
| 435 |
} |
| 436 |
} ); |
| 437 |
|
| 438 |
WWPDF_Free(); |
| 439 |
|
| 440 |
} |
| 441 |
add_action( 'plugins_loaded', 'wwpdf_plugins_loaded', 1 ); |
| 442 |
|
| 443 |
function wwpdf_init() { |
| 444 |
|
| 445 |
load_plugin_textdomain( 'waterwoo-pdf', false, dirname( plugin_basename( __FILE__ ) ) . '/lang/' ); |
| 446 |
|
| 447 |
} |
| 448 |
add_action( 'init', 'wwpdf_init', 1 ); |
| 449 |
|
| 450 |
function pdfink_fix_edd_nl_corruption() { |
| 451 |
|
| 452 |
if ( get_option( 'eddimark_textarea_fixed', false ) ) { |
| 453 |
return; |
| 454 |
} |
| 455 |
|
| 456 |
global $wpdb; |
| 457 |
$raw_settings = $wpdb->get_var( "SELECT option_value FROM $wpdb->options WHERE option_name = 'edd_settings'" ); |
| 458 |
|
| 459 |
if ( ! $raw_settings || ! is_serialized( $raw_settings ) ) { |
| 460 |
return; |
| 461 |
} |
| 462 |
|
| 463 |
// If unserialization fails, fix it |
| 464 |
if ( @unserialize( $raw_settings ) === false ) { |
| 465 |
|
| 466 |
$fixed_settings_string = preg_replace_callback( |
| 467 |
'/s:(14|16):"(eddimark_files|eddimark_f_input)";s:(\d+):"(.*?)";/s', |
| 468 |
function ( $matches ) { |
| 469 |
$key_length = $matches[1]; |
| 470 |
$key_name = $matches[2]; |
| 471 |
$textarea_content = $matches[4]; |
| 472 |
$clean_content = str_replace( array( "\\r\\n", "\\r", "\r\n", "\r" ), "\n", $textarea_content ); |
| 473 |
$new_length = strlen( $clean_content ); |
| 474 |
return 's:' . $key_length . ':"' . $key_name . '";s:' . $new_length . ':"' . $clean_content . '";'; |
| 475 |
}, |
| 476 |
$raw_settings |
| 477 |
); |
| 478 |
|
| 479 |
$fixed_array = unserialize( $fixed_settings_string ); |
| 480 |
|
| 481 |
if ( is_array( $fixed_array ) ) { |
| 482 |
update_option( 'edd_settings', $fixed_array ); |
| 483 |
wp_cache_set( 'edd_settings', $fixed_array, 'options' ); |
| 484 |
$GLOBALS['edd_options'] = $fixed_array; |
| 485 |
update_option( 'eddimark_textarea_fixed', '1' ); |
| 486 |
} |
| 487 |
} |
| 488 |
} |
| 489 |
add_action( 'plugins_loaded', 'pdfink_fix_edd_nl_corruption', -1 ); |
| 490 |
|
