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199 lines
6.9 KiB
199 lines
6.9 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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require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
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require_once api_get_path(LIBRARY_PATH).'course.lib.php';
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require_once api_get_path(LIBRARY_PATH).'tracking.lib.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pData.class.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pChart.class.php';
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require_once api_get_path(LIBRARY_PATH).'pchart/pCache.class.php';
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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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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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$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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/*if (api_is_platform_admin()) {
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$this->teachers = UserManager::get_user_list(array('status' => COURSEMANAGER));
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} else {*/
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$this->teachers = UserManager::get_users_followed_by_drh($user_id, COURSEMANAGER);
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//}
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}
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}
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/**
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* This method check if a user is allowed to see the block inside dashboard interface
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* @param int User id
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* @return bool Is block visible for user
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*/
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public function is_block_visible_for_user($user_id) {
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$user_info = api_get_user_info($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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global $charset;
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$column = 1;
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$data = array();
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/*if (api_is_platform_admin()) {
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$teacher_content_html = $this->get_teachers_content_html_for_platform_admin();
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} else if (api_is_drh()) {*/
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$teacher_information_graph = $this->get_teachers_information_graph();
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//}
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$html = '
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<li class="widget color-blue" id="intro">
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<div class="widget-head">
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<h3>'.get_lang('TeachersInformationsGraph').'</h3>
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<div class="widget-actions"><a onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)).'\')) return false;" href="index.php?action=disable_block&path='.$this->path.'">'.Display::return_icon('close.gif',get_lang('Close')).'</a></div>
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</div>
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<div class="widget-content" align="center">
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<div style="padding:10px;"><strong>'.get_lang('TimeSpentOnThePlatformLastWeekByDay').'</strong></div>
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'.$teacher_information_graph.'
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</div>
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</li>
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';
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$data['column'] = $column;
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$data['content_html'] = $html;
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return $data;
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}
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/**
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* This method return a content html, it's used inside get_block method for showing it inside dashboard interface
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* @return string content html
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*/
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public function get_teachers_information_graph() {
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$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($user_ids) > 0) {
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$data_set = 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 $day) {
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$time_on_platform_by_day = Tracking::get_time_spent_on_the_platform($user_id, false, $day);
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$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[] = $min;
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}
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$data_set->AddPoint($time_by_days,$username);
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$data_set->AddSerie($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',$weekday);
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}
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$data_set->AddPoint($days_on_week,"Days");
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$data_set->SetXAxisName($last_week);
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$data_set->SetYAxisName(get_lang('Minutes'));
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$data_set->SetAbsciseLabelSerie("Days");
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$graph_id = $this->user_id.'TeacherConnectionsGraph';
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$cache = new pCache();
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// the graph id
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$data = $data_set->GetData();
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if ($cache->IsInCache($graph_id, $data_set->GetData())) {
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//if we already created the img
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$img_file = $cache->GetHash($graph_id, $data_set->GetData());
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} else {
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// Initializing the graph
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$test = new pChart(400,330);
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$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
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$test->setGraphArea(65,30,350,250);
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$test->drawFilledRoundedRectangle(7,7,393,303,5,240,240,240);
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$test->drawRoundedRectangle(5,5,395,305,5,230,230,230);
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$test->drawGraphArea(255,255,255,TRUE);
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$test->drawScale($data_set->GetData(),$data_set->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE);
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$test->drawGrid(4,TRUE,230,230,230,50);
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// Drawing lines
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$test->drawLineGraph($data_set->GetData(),$data_set->GetDataDescription());
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$test->drawPlotGraph($data_set->GetData(),$data_set->GetDataDescription(),3,2,255,255,255);
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// Drawing Legend
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$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
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$test->drawLegend(320,20,$data_set->GetDataDescription(),204,204,255);
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$test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),array("Days"));
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$cache->WriteToCache($graph_id, $data_set->GetData(), $test);
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ob_start();
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$test->Stroke();
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ob_end_clean();
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$img_file = $cache->GetHash($graph_id, $data_set->GetData());
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}
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if (!empty($img_file)) {
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$graph = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
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}
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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 $graph;
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}
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/**
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* Get number of teachers
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* @return int
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*/
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function get_number_of_teachers() {
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return count($this->teachers);
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}
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}
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?>
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