user_id = $user_id; $this->path = 'block_teacher_graph'; if ($this->is_block_visible_for_user($user_id)) { $this->teachers = UserManager::get_users_followed_by_drh($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 = []; $teacher_information_graph = $this->get_teachers_information_graph(); $html = '
'.get_lang('TeachersInformationsGraph').'
'.get_lang('TimeSpentOnThePlatformLastWeekByDay').'
'.$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); $a_last_week = get_last_week(); if (is_array($user_ids) && count($user_ids) > 0) { $dataSet = new pData(); foreach ($user_ids as $user_id) { $teacher_info = api_get_user_info($user_id); $username = $teacher_info['username']; $time_by_days = []; foreach ($a_last_week as $day) { // day is received as y-m-d 12:00:00 $start_date = api_get_utc_datetime($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; } $dataSet->addPoints($time_by_days, $username); } $last_week = date('Y-m-d', $a_last_week[0]).' '.get_lang('To').' '.date('Y-m-d', $a_last_week[6]); $days_on_week = []; foreach ($a_last_week as $weekday) { $days_on_week[] = date('d/m', $weekday); } $dataSet->addPoints($days_on_week, 'Days'); $dataSet->setAbscissaName($last_week); $dataSet->setAxisName(0, get_lang('Minutes')); $dataSet->setAbscissa('Days'); $dataSet->loadPalette(api_get_path(SYS_CODE_PATH).'palettes/pchart/default.color', true); // Cache definition $cachePath = api_get_path(SYS_ARCHIVE_PATH); $myCache = new pCache(['CacheFolder' => substr($cachePath, 0, strlen($cachePath) - 1)]); $chartHash = $myCache->getHash($dataSet); if ($myCache->isInCache($chartHash)) { $imgPath = api_get_path(SYS_ARCHIVE_PATH).$chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH).$chartHash; } else { /* Create the pChart object */ $widthSize = 440; $heightSize = 350; $angle = 50; $myPicture = new pImage($widthSize, $heightSize, $dataSet); /* Turn of Antialiasing */ $myPicture->Antialias = false; /* Add a border to the picture */ $myPicture->drawRectangle(0, 0, $widthSize - 1, $heightSize - 1, ['R' => 0, 'G' => 0, 'B' => 0]); /* Set the default font */ $myPicture->setFontProperties(['FontName' => api_get_path(SYS_FONTS_PATH).'opensans/OpenSans-Regular.ttf', 'FontSize' => 10]); /* Do NOT Write the chart title */ /* Define the chart area */ $myPicture->setGraphArea(40, 40, $widthSize - 20, $heightSize - 80); /* Draw the scale */ $scaleSettings = [ 'GridR' => 200, 'GridG' => 200, 'GridB' => 200, 'DrawSubTicks' => true, 'CycleBackground' => true, 'Mode' => SCALE_MODE_ADDALL_START0, 'LabelRotation' => $angle, ]; $myPicture->drawScale($scaleSettings); /* Turn on shadow computing */ $myPicture->setShadow(true, ['X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10]); /* Draw the chart */ $myPicture->setShadow(true, ['X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10]); $settings = [ 'DisplayValues' => true, 'DisplayR' => 0, 'DisplayG' => 0, 'DisplayB' => 0, ]; $myPicture->drawFilledSplineChart($settings); $myPicture->drawLegend(40, 20, ['Mode' => LEGEND_HORIZONTAL]); /* Write and save into cache */ $myCache->writeToCache($chartHash, $myPicture); $imgPath = api_get_path(SYS_ARCHIVE_PATH).$chartHash; $myCache->saveFromCache($chartHash, $imgPath); $imgPath = api_get_path(WEB_ARCHIVE_PATH).$chartHash; } $graph = ''; } else { $graph = '

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

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