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- <?php
- /**
- * This file is part of teacher graph block plugin for dashboard,
- * it should be required inside dashboard controller for showing it into dashboard interface from plattform
- * @package chamilo.dashboard
- * @author Christian Fasanando
- */
- /**
- * required files for getting data
- */
- require_once api_get_path(LIBRARY_PATH).'usermanager.lib.php';
- require_once api_get_path(LIBRARY_PATH).'course.lib.php';
- require_once api_get_path(LIBRARY_PATH).'tracking.lib.php';
- require_once api_get_path(LIBRARY_PATH).'pchart/pData.class.php';
- require_once api_get_path(LIBRARY_PATH).'pchart/pChart.class.php';
- require_once api_get_path(LIBRARY_PATH).'pchart/pCache.class.php';
- /**
- * This class is used like controller for teacher graph block plugin,
- * the class name must be registered inside path.info file (e.g: controller = "BlockTeacherGraph"), so dashboard controller will be instantiate it
- * @package chamilo.dashboard
- */
- class BlockTeacherGraph extends Block {
- private $user_id;
- private $teachers;
- private $path;
- private $permission = array(DRH);
- /**
- * Controller
- */
- public function __construct ($user_id) {
- $this->user_id = $user_id;
- $this->path = 'block_teacher_graph';
- if ($this->is_block_visible_for_user($user_id)) {
- /*if (api_is_platform_admin()) {
- $this->teachers = UserManager::get_user_list(array('status' => COURSEMANAGER));
- } else {*/
- $this->teachers = UserManager::get_users_followed_by_drh($user_id, COURSEMANAGER);
- //}
- }
- }
-
- /**
- * This method check if a user is allowed to see the block inside dashboard interface
- * @param int User id
- * @return bool Is block visible for user
- */
- public function is_block_visible_for_user($user_id) {
- $user_info = api_get_user_info($user_id);
- $user_status = $user_info['status'];
- $is_block_visible_for_user = false;
- if (UserManager::is_admin($user_id) || in_array($user_status, $this->permission)) {
- $is_block_visible_for_user = true;
- }
- return $is_block_visible_for_user;
- }
-
- /**
- * This method return content html containing information about teachers and its position for showing it inside dashboard interface
- * it's important to use the name 'get_block' for beeing used from dashboard controller
- * @return array column and content html
- */
- public function get_block() {
-
- global $charset;
-
- $column = 1;
- $data = array();
-
- /*if (api_is_platform_admin()) {
- $teacher_content_html = $this->get_teachers_content_html_for_platform_admin();
- } else if (api_is_drh()) {*/
- $teacher_information_graph = $this->get_teachers_information_graph();
- //}
-
- $html = '
- <li class="widget color-blue" id="intro">
- <div class="widget-head">
- <h3>'.get_lang('TeachersInformationsGraph').'</h3>
- <div class="widget-actions"><a onclick="javascript:if(!confirm(\''.addslashes(api_htmlentities(get_lang('ConfirmYourChoice'),ENT_QUOTES,$charset)).'\')) return false;" href="index.php?action=disable_block&path='.$this->path.'">'.Display::return_icon('close.gif',get_lang('Close')).'</a></div>
- </div>
- <div class="widget-content" align="center">
- <div style="padding:10px;"><strong>'.get_lang('TimeSpentOnThePlatformLastWeekByDay').'</strong></div>
- '.$teacher_information_graph.'
- </div>
- </li>
- ';
-
- $data['column'] = $column;
- $data['content_html'] = $html;
-
- return $data;
-
- }
-
- /**
- * This method return a content html, it's used inside get_block method for showing it inside dashboard interface
- * @return string content html
- */
- public function get_teachers_information_graph() {
-
- $teachers = $this->teachers;
- $graph = '';
- // get data
- $time_on_the_platform = array();
- foreach ($teachers as $teacher) {
- $teacher_id = $teacher['user_id'];
- // get time on platform last week
- $time_on_platform_last_week = Tracking :: get_time_spent_on_the_platform($teacher_id,true);
- if (!empty($time_on_platform_last_week)) {
- $time_on_the_platform[$teacher_id] = $time_on_platform_last_week;
- } else {
- $time_on_the_platform[$teacher_id] = 0;
- }
- }
-
- arsort($time_on_the_platform);
- // get only until five users
- if (count($time_on_the_platform) > 5) { array_splice($time_on_the_platform,5); }
-
- $user_ids = array_keys($time_on_the_platform);
- $a_last_week = get_last_week();
- if (is_array($user_ids) && count($user_ids) > 0) {
- $data_set = new pData;
- foreach ($user_ids as $user_id) {
- $teacher_info = api_get_user_info($user_id);
- $username = $teacher_info['username'];
-
- $time_by_days = array();
- foreach ($a_last_week as $day) {
- $time_on_platform_by_day = Tracking::get_time_spent_on_the_platform($user_id, false, $day);
- $hours = floor($time_on_platform_by_day / 3600);
- $min = floor(($time_on_platform_by_day - ($hours * 3600)) / 60);
- $time_by_days[] = $min;
- }
-
- $data_set->AddPoint($time_by_days,$username);
- $data_set->AddSerie($username);
-
- }
-
- $last_week = date('Y-m-d',$a_last_week[0]).' '.get_lang('To').' '.date('Y-m-d', $a_last_week[6]);
-
- $days_on_week = array();
- foreach ($a_last_week as $weekday) {
- $days_on_week[] = date('d/m',$weekday);
- }
-
- $data_set->AddPoint($days_on_week,"Days");
- $data_set->SetXAxisName($last_week);
- $data_set->SetYAxisName(get_lang('Minutes'));
-
- $data_set->SetAbsciseLabelSerie("Days");
- $graph_id = $this->user_id.'TeacherConnectionsGraph';
-
- $cache = new pCache();
- // the graph id
- $data = $data_set->GetData();
-
- if ($cache->IsInCache($graph_id, $data_set->GetData())) {
- //if we already created the img
- $img_file = $cache->GetHash($graph_id, $data_set->GetData());
- } else {
-
- // Initializing the graph
- $test = new pChart(400,280);
- $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
- $test->setGraphArea(65,30,350,200);
- $test->drawFilledRoundedRectangle(7,7,393,253,5,240,240,240);
- $test->drawRoundedRectangle(5,5,395,255,5,230,230,230);
- $test->drawGraphArea(255,255,255,TRUE);
- $test->drawScale($data_set->GetData(),$data_set->GetDataDescription(),SCALE_NORMAL,150,150,150,TRUE,0,2,TRUE);
- $test->drawGrid(4,TRUE,230,230,230,50);
-
- // Drawing lines
- $test->drawLineGraph($data_set->GetData(),$data_set->GetDataDescription());
- $test->drawPlotGraph($data_set->GetData(),$data_set->GetDataDescription(),3,2,255,255,255);
-
- // Drawing Legend
- $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
- $test->drawLegend(320,20,$data_set->GetDataDescription(),204,204,255);
-
- // Drawing title
- //$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',10);
- //$test->drawTitle(50,22,get_lang('TimeSpentOnThePlatformLastWeekByDay'),50,50,50,385);
-
- $test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),"Days");
-
- $cache->WriteToCache($graph_id, $data_set->GetData(), $test);
- ob_start();
- $test->Stroke();
- ob_end_clean();
- $img_file = $cache->GetHash($graph_id, $data_set->GetData());
-
- }
-
- if (!empty($img_file)) {
- $graph = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
- }
- } else {
- $graph = '<p>'.api_convert_encoding(get_lang('GraphicNotAvailable'),'UTF-8').'</p>';
- }
-
- return $graph;
-
- }
-
-
- /**
- * Get number of teachers
- * @return int
- */
- function get_number_of_teachers() {
- return count($this->teachers);
- }
-
- }
- ?>
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