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213 lines
7.7 KiB
213 lines
7.7 KiB
<?php
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/**
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* This file is part of teacher graph block plugin for dashboard,
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* it should be required inside dashboard controller for showing it into dashboard interface from plattform
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* @package chamilo.dashboard
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* @author Christian Fasanando
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*/
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/**
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* required files for getting data
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*/
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use CpChart\Classes\pData as pData;
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use CpChart\Classes\pImage as pImage;
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use CpChart\Classes\pCache as pCache;
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/**
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* This class is used like controller for teacher graph block plugin,
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* the class name must be registered inside path.info file (e.g: controller = "BlockTeacherGraph"), so dashboard controller will be instantiate it
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* @package chamilo.dashboard
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*/
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class BlockTeacherGraph extends Block
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{
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private $user_id;
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private $teachers;
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private $path;
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private $permission = array(DRH);
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/**
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* Controller
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*/
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public function __construct ($user_id)
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{
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$this->user_id = $user_id;
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$this->path = 'block_teacher_graph';
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if ($this->is_block_visible_for_user($user_id)) {
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$this->teachers = UserManager::get_users_followed_by_drh($user_id, COURSEMANAGER);
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}
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}
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/**
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* This method check if a user is allowed to see the block inside dashboard interface
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* @param int User id
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* @return bool Is block visible for user
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*/
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public function is_block_visible_for_user($user_id)
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{
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$user_info = api_get_user_info($user_id);
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$user_status = $user_info['status'];
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$is_block_visible_for_user = false;
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if (UserManager::is_admin($user_id) || in_array($user_status, $this->permission)) {
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$is_block_visible_for_user = true;
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}
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return $is_block_visible_for_user;
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}
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/**
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* This method return content html containing information about teachers and its position for showing it inside dashboard interface
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* it's important to use the name 'get_block' for beeing used from dashboard controller
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* @return array column and content html
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*/
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public function get_block()
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{
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global $charset;
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$column = 1;
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$data = array();
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$teacher_information_graph = $this->get_teachers_information_graph();
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$html = '
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<div class="panel panel-default" id="intro">
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<div class="panel-heading">'.get_lang('TeachersInformationsGraph').'
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<div class="pull-right"><a class="btn btn-danger btn-xs" onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)).'\')) return false;" href="index.php?action=disable_block&path='.$this->path.'">
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<i class="fa fa-times"></i>
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</a></div>
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</div>
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<div class="panel-body" align="center">
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<div style="padding:10px;"><strong>'.get_lang('TimeSpentOnThePlatformLastWeekByDay').'</strong></div>
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'.$teacher_information_graph.'
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</div>
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</div>
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';
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$data['column'] = $column;
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$data['content_html'] = $html;
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return $data;
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}
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/**
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* This method return a content html, it's used inside get_block method for showing it inside dashboard interface
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* @return string content html
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*/
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public function get_teachers_information_graph()
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{
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$teachers = $this->teachers;
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$graph = '';
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$user_ids = array_keys($teachers);
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$a_last_week = get_last_week();
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if (is_array($user_ids) && count($user_ids) > 0) {
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$dataSet = new pData;
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foreach ($user_ids as $user_id) {
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$teacher_info = api_get_user_info($user_id);
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$username = $teacher_info['username'];
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$time_by_days = array();
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foreach ($a_last_week as $day) {
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// day is received as y-m-d 12:00:00
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$start_date = api_get_utc_datetime($day);
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$end_date = api_get_utc_datetime($day+(3600*24-1));
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$time_on_platform_by_day = Tracking::get_time_spent_on_the_platform($user_id, 'custom', $start_date, $end_date);
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$hours = floor($time_on_platform_by_day / 3600);
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$min = floor(($time_on_platform_by_day - ($hours * 3600)) / 60);
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$time_by_days[] = $min;
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}
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$dataSet->addPoints($time_by_days, $username);
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}
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$last_week = date('Y-m-d',$a_last_week[0]).' '.get_lang('To').' '.date('Y-m-d', $a_last_week[6]);
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$days_on_week = array();
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foreach ($a_last_week as $weekday) {
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$days_on_week[] = date('d/m',$weekday);
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}
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$dataSet->addPoints($days_on_week, 'Days');
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$dataSet->setAbscissaName($last_week);
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$dataSet->setAxisName(0, get_lang('Minutes'));
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$dataSet->setAbscissa('Days');
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$dataSet->loadPalette(api_get_path(SYS_CODE_PATH) . 'palettes/pchart/default.color', true);
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// Cache definition
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$cachePath = api_get_path(SYS_ARCHIVE_PATH);
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$myCache = new pCache(array('CacheFolder' => substr($cachePath, 0, strlen($cachePath) - 1)));
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$chartHash = $myCache->getHash($dataSet);
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if ($myCache->isInCache($chartHash)) {
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$imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash;
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$myCache->saveFromCache($chartHash, $imgPath);
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$imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash;
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} else {
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/* Create the pChart object */
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$widthSize = 440;
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$heightSize = 350;
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$angle = 50;
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$myPicture = new pImage($widthSize, $heightSize, $dataSet);
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/* Turn of Antialiasing */
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$myPicture->Antialias = false;
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/* Add a border to the picture */
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$myPicture->drawRectangle(0, 0, $widthSize - 1, $heightSize - 1, array('R' => 0, 'G' => 0, 'B' => 0));
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/* Set the default font */
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$myPicture->setFontProperties(array('FontName' => api_get_path(SYS_FONTS_PATH) . 'opensans/OpenSans-Regular.ttf', 'FontSize' => 10));
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/* Do NOT Write the chart title */
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/* Define the chart area */
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$myPicture->setGraphArea(40, 40, $widthSize - 20, $heightSize - 80);
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/* Draw the scale */
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$scaleSettings = array(
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'GridR' => 200,
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'GridG' => 200,
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'GridB' => 200,
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'DrawSubTicks' => true,
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'CycleBackground' => true,
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'Mode' => SCALE_MODE_ADDALL_START0,
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'LabelRotation' => $angle,
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);
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$myPicture->drawScale($scaleSettings);
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/* Turn on shadow computing */
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$myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10));
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/* Draw the chart */
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$myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10));
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$settings = array(
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'DisplayValues' => true,
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'DisplayR' => 0,
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'DisplayG' => 0,
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'DisplayB' => 0,
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);
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$myPicture->drawFilledSplineChart($settings);
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$myPicture->drawLegend(40, 20, array('Mode' => LEGEND_HORIZONTAL));
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/* Write and save into cache */
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$myCache->writeToCache($chartHash, $myPicture);
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$imgPath = api_get_path(SYS_ARCHIVE_PATH) . $chartHash;
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$myCache->saveFromCache($chartHash, $imgPath);
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$imgPath = api_get_path(WEB_ARCHIVE_PATH) . $chartHash;
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}
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$graph = '<img src="' . $imgPath . '" >';
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} else {
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$graph = '<p>'.api_convert_encoding(get_lang('GraphicNotAvailable'), 'UTF-8').'</p>';
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}
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return $graph;
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}
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/**
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* Get number of teachers
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* @return int
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*/
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function get_number_of_teachers()
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{
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return count($this->teachers);
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}
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}
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