Proyectos de Subversion Moodle

<?php

// This file is part of the customcert module for Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * This file contains the customcert element userpicture's core interaction API.

 *

 * @package    customcertelement_userpicture

 * @copyright  2017 Mark Nelson <markn@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace customcertelement_userpicture;

/**

 * The customcert element userpicture's core interaction API.

 *

 * @package    customcertelement_userpicture

 * @copyright  2017 Mark Nelson <markn@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class element extends \mod_customcert\element {

    /**

     * This function renders the form elements when adding a customcert element.

     *

     * @param \MoodleQuickForm $mform the edit_form instance

     */

    public function render_form_elements($mform) {

        \mod_customcert\element_helper::render_form_element_width($mform);

        \mod_customcert\element_helper::render_form_element_height($mform);

        if (get_config('customcert', 'showposxy')) {

            \mod_customcert\element_helper::render_form_element_position($mform);

        }

    }

    /**

     * Performs validation on the element values.

     *

     * @param array $data the submitted data

     * @param array $files the submitted files

     * @return array the validation errors

     */

    public function validate_form_elements($data, $files) {

        // Array to return the errors.

        $errors = [];

        // Validate the width.

        $errors += \mod_customcert\element_helper::validate_form_element_width($data);

        // Validate the height.

        $errors += \mod_customcert\element_helper::validate_form_element_height($data);

        // Validate the position.

        if (get_config('customcert', 'showposxy')) {

            $errors += \mod_customcert\element_helper::validate_form_element_position($data);

        }

        return $errors;

    }

    /**

     * This will handle how form data will be saved into the data column in the

     * customcert_elements table.

     *

     * @param \stdClass $data the form data

     * @return string the json encoded array

     */

    public function save_unique_data($data) {

        // Array of data we will be storing in the database.

        $arrtostore = [

            'width' => (int) $data->width,

            'height' => (int) $data->height,

        ];

        return json_encode($arrtostore);

    }

    /**

     * Handles rendering the element on the pdf.

     *

     * @param \pdf $pdf the pdf object

     * @param bool $preview true if it is a preview, false otherwise

     * @param \stdClass $user the user we are rendering this for

     */

    public function render($pdf, $preview, $user) {

        global $CFG;

        // If there is no element data, we have nothing to display.

        if (empty($this->get_data())) {

            return;

        }

        $imageinfo = json_decode($this->get_data());

        $context = \context_user::instance($user->id);

        // Get files in the user icon area.

        $fs = get_file_storage();

        $files = $fs->get_area_files($context->id, 'user', 'icon', 0);

        // Get the file we want to display.

        $file = null;

        foreach ($files as $filefound) {

            if (!$filefound->is_directory()) {

                $file = $filefound;

                break;

            }

        }

        // Show image if we found one.

        if ($file) {

            $location = make_request_directory() . '/target';

            $file->copy_content_to($location);

            $pdf->Image($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);

        } else if ($preview) { // Can't find an image, but we are in preview mode then display default pic.

            $location = $CFG->dirroot . '/pix/u/f1.png';

            $pdf->Image($location, $this->get_posx(), $this->get_posy(), $imageinfo->width, $imageinfo->height);

        }

    }

    /**

     * Render the element in html.

     *

     * This function is used to render the element when we are using the

     * drag and drop interface to position it.

     *

     * @return string the html

     */

    public function render_html() {

        global $PAGE, $USER;

        // If there is no element data, we have nothing to display.

        if (empty($this->get_data())) {

            return '';

        }

        $imageinfo = json_decode($this->get_data());

        // Get the image.

        $userpicture = new \user_picture($USER);

        $userpicture->size = 1;

        $url = $userpicture->get_url($PAGE)->out(false);

        // The size of the images to use in the CSS style.

        $style = '';

        if ($imageinfo->width === 0 && $imageinfo->height === 0) {

            // Put this in so code checker doesn't complain.

            $style .= '';

        } else if ($imageinfo->width === 0) { // Then the height must be set.

            $style .= 'width: ' . $imageinfo->height . 'mm; ';

            $style .= 'height: ' . $imageinfo->height . 'mm';

        } else if ($imageinfo->height === 0) { // Then the width must be set.

            $style .= 'width: ' . $imageinfo->width . 'mm; ';

            $style .= 'height: ' . $imageinfo->width . 'mm';

        } else { // Must both be set.

            $style .= 'width: ' . $imageinfo->width . 'mm; ';

            $style .= 'height: ' . $imageinfo->height . 'mm';

        }

        return \html_writer::tag('img', '', ['src' => $url, 'style' => $style]);

    }

    /**

     * Sets the data on the form when editing an element.

     *

     * @param \MoodleQuickForm $mform the edit_form instance

     */

    public function definition_after_data($mform) {

        // Set the image, width and height for this element.

        if (!empty($this->get_data())) {

            $imageinfo = json_decode($this->get_data());

            $element = $mform->getElement('width');

            $element->setValue($imageinfo->width);

            $element = $mform->getElement('height');

            $element->setValue($imageinfo->height);

        }

        parent::definition_after_data($mform);

    }

}