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 = '

  • '.get_lang('TeachersInformationsGraph').'

    '.Display::return_icon('close.gif',get_lang('Close')).'
    '.get_lang('TimeSpentOnThePlatformLastWeekByDay').'
    '.$teacher_information_graph.'
    • '; $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); $a_last_week = Text::get_last_week(); if (is_array($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) { $start_date = api_get_utc_datetime($day); $end_date = api_get_utc_datetime($day+(3600*24-1)); $time_on_platform_by_day = Tracking::get_time_spent_on_the_platform($user_id, 'custom', $start_date, $end_date); $hours = floor($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(api_get_path(SYS_ARCHIVE_PATH)); // 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 = ''; } } else { $graph = '

    '.api_convert_encoding(get_lang('GraphicNotAvailable'),'UTF-8').'

    '; } return $graph; } /** * Get number of teachers * @return int */ function get_number_of_teachers() { return count($this->teachers); } }