132 lines
4.6 KiB
PHP
132 lines
4.6 KiB
PHP
<?php
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// This file is part of the customcert module for Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace customcertelement_bgimage;
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defined('MOODLE_INTERNAL') || die();
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/**
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* The customcert element background image's core interaction API.
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*
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* @package customcertelement_bgimage
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* @copyright 2016 Mark Nelson <markn@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class element extends \customcertelement_image\element {
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/**
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* This function renders the form elements when adding a customcert element.
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*
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* @param \mod_customcert\edit_element_form $mform the edit_form instance
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*/
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public function render_form_elements($mform) {
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$mform->addElement('select', 'image', get_string('image', 'customcertelement_image'), self::get_images());
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$mform->addElement('filemanager', 'customcertimage', get_string('uploadimage', 'customcert'), '', $this->filemanageroptions);
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}
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/**
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* Performs validation on the element values.
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*
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* @param array $data the submitted data
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* @param array $files the submitted files
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* @return array the validation errors
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*/
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public function validate_form_elements($data, $files) {
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// Array to return the errors.
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return array();
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}
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/**
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* This will handle how form data will be saved into the data column in the
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* customcert_elements table.
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*
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* @param \stdClass $data the form data
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* @return string the json encoded array
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*/
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public function save_unique_data($data) {
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// Array of data we will be storing in the database.
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$arrtostore = array(
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'pathnamehash' => $data->image,
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'width' => 0,
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'height' => 0
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);
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return json_encode($arrtostore);
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}
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/**
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* Handles rendering the element on the pdf.
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*
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* @param \pdf $pdf the pdf object
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* @param bool $preview true if it is a preview, false otherwise
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* @param \stdClass $user the user we are rendering this for
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*/
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public function render($pdf, $preview, $user) {
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global $CFG;
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// If there is no element data, we have nothing to display.
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if (empty($this->element->data)) {
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return;
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}
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$imageinfo = json_decode($this->element->data);
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// Get the image.
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$fs = get_file_storage();
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if ($file = $fs->get_file_by_hash($imageinfo->pathnamehash)) {
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$contenthash = $file->get_contenthash();
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$l1 = $contenthash[0] . $contenthash[1];
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$l2 = $contenthash[2] . $contenthash[3];
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$location = $CFG->dataroot . '/filedir' . '/' . $l1 . '/' . $l2 . '/' . $contenthash;
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// Set the image to the size of the PDF page.
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$pdf->Image($location, 0, 0, $pdf->getPageWidth(), $pdf->getPageHeight());
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}
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}
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/**
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* Render the element in html.
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*
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* This function is used to render the element when we are using the
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* drag and drop interface to position it.
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*
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* @return string the html
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*/
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public function render_html() {
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global $DB;
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// If there is no element data, we have nothing to display.
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if (empty($this->element->data)) {
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return '';
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}
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$imageinfo = json_decode($this->element->data);
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// Get the image.
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$fs = get_file_storage();
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if ($file = $fs->get_file_by_hash($imageinfo->pathnamehash)) {
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$url = \moodle_url::make_pluginfile_url($file->get_contextid(), 'mod_customcert', 'image', $file->get_itemid(),
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$file->get_filepath(), $file->get_filename());
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// Get the page we are rendering this on.
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$page = $DB->get_record('customcert_pages', array('id' => $this->element->pageid), '*', MUST_EXIST);
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// Set the image to the size of the page.
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$style = 'width: ' . $page->width . 'mm; height: ' . $page->height . 'mm';
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return \html_writer::tag('img', '', array('src' => $url, 'style' => $style));
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}
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}
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}
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