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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 = ''; $user_ids = array_keys($teachers); $a_last_week = get_last_week(); if (is_array($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 $bg_width = 440; $bg_height = 350; $test = new pChart($bg_width+10,$bg_height+20); $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8); $test->setGraphArea(65,30,$bg_width-70,$bg_height-50); $test->drawFilledRoundedRectangle(7,7,$bg_width,$bg_height,5,240,240,240); $test->drawRoundedRectangle(5,5,$bg_width+2,$bg_height+2,5,230,230,230); $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()); $test->drawFilledCubicCurve($data_set->GetData(),$data_set->GetDataDescription(),.1,30); //$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); $test->drawLegend($bg_width-80,20,$data_set->GetDataDescription(),204,204,255); $test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),array("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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