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#65 Added user picture element

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Thanks goes to Jean-Michel Vedrine.
This commit is contained in:
Mark Nelson 2017-01-31 15:57:39 +08:00
parent e6f26a3661
commit dabc959826
3 changed files with 259 additions and 0 deletions
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199
element/userpicture/classes/element.php Normal file
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<?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/>.
namespace customcertelement_userpicture;
defined('MOODLE_INTERNAL') || die();
/**
* 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 \mod_customcert\edit_element_form $mform the edit_form instance
*/
public function render_form_elements($mform) {
$mform->addElement('text', 'width', get_string('width', 'customcertelement_userpicture'), array('size' => 10));
$mform->setType('width', PARAM_INT);
$mform->setDefault('width', 0);
$mform->addHelpButton('width', 'width', 'customcertelement_userpicture');
$mform->addElement('text', 'height', get_string('height', 'customcertelement_userpicture'), array('size' => 10));
$mform->setType('height', PARAM_INT);
$mform->setDefault('height', 0);
$mform->addHelpButton('height', 'height', 'customcertelement_userpicture');
if (get_config('customcert', 'showposxy')) {
\mod_customcert\element_helper::render_form_element_position($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.
$errors = array();
// Check if width is not set, or not numeric or less than 0.
if ((!isset($data['width'])) || (!is_numeric($data['width'])) || ($data['width'] < 0)) {
$errors['width'] = get_string('invalidwidth', 'customcertelement_userpicture');
}
// Check if height is not set, or not numeric or less than 0.
if ((!isset($data['height'])) || (!is_numeric($data['height'])) || ($data['height'] < 0)) {
$errors['height'] = get_string('invalidheight', 'customcertelement_userpicture');
}
// 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 = array(
'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->element->data)) {
return;
}
$imageinfo = json_decode($this->element->data);
$context = \context_user::instance($user->id);
// Prepare file record object.
$fileinfo = array(
'component' => 'user',
'filearea' => 'icon',
'itemid' => 0,
'contextid' => $context->id,
'filepath' => '/',
'filename' => 'f1.png');
// Get file.
$fs = get_file_storage();
$file = $fs->get_file($fileinfo['contextid'], $fileinfo['component'], $fileinfo['filearea'],
$fileinfo['itemid'], $fileinfo['filepath'], $fileinfo['filename']);
// Show image.
if ($file) {
$contenthash = $file->get_contenthash();
$l1 = $contenthash[0] . $contenthash[1];
$l2 = $contenthash[2] . $contenthash[3];
$location = $CFG->dataroot . '/filedir/' . $l1 . '/' . $l2 . '/' . $contenthash;
$pdf->Image($location, $this->element->posx, $this->element->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->element->posx, $this->element->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->element->data)) {
return '';
}
$imageinfo = json_decode($this->element->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 && $imageinfo->height === 0) {
// Do nothing.
} else if ($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', '', array('src' => $url, 'style' => $style));
}
/**
* Sets the data on the form when editing an element.
*
* @param \mod_customcert\edit_element_form $mform the edit_form instance
*/
public function definition_after_data($mform) {
// Set the image, width and height for this element.
if (!empty($this->element->data)) {
$imageinfo = json_decode($this->element->data);
$this->element->width = $imageinfo->width;
$this->element->height = $imageinfo->height;
}
parent::definition_after_data($mform);
}
}

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element/userpicture/lang/en/customcertelement_userpicture.php Normal file
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<?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/>.
/**
* Strings for component 'customcertelement_userpicture', language 'en'.
*
* @package customcertelement_userpicture
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
$string['height'] = 'Height';
$string['height_help'] = 'Height of the image in mm. If equal to zero, it is automatically calculated.';
$string['invalidheight'] = 'The height has to be a valid number greater than or equal to 0.';
$string['invalidwidth'] = 'The width has to be a valid number greater than or equal to 0.';
$string['pluginname'] = 'User picture';
$string['width'] = 'Width';
$string['width_help'] = 'Width of the image in mm. If equal to zero, it is automatically calculated.';

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element/userpicture/version.php Normal file
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<?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 version information for the userpicture plugin.
*
* @package customcertelement_userpicture
* @copyright 2017 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die('Direct access to this script is forbidden.');
$plugin->version = 2016120500; // The current module version (Date: YYYYMMDDXX).
$plugin->requires = 2016120500; // Requires this Moodle version (3.2).
$plugin->component = 'customcertelement_userpicture';