path = 'block_evaluation_graph'; $this->user_id = $user_id; $this->bg_width = 450; $this->bg_height = 350; if ($this->is_block_visible_for_user($user_id)) { if (!api_is_session_admin()) { $this->courses = CourseManager::get_courses_followed_by_drh($user_id); } $this->sessions = SessionManager::get_sessions_followed_by_drh($user_id); } } /** * 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 sessions 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(); $evaluations_base_courses_graph = $this->get_evaluations_base_courses_graph(); $evaluations_courses_in_sessions_graph = $this->get_evaluations_courses_in_sessions_graph(); $html = '

'; if (empty($evaluations_base_courses_graph) && empty($evaluations_courses_in_sessions_graph)) { $html .= '

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

'; } else { // display evaluations base courses graph if (!empty($evaluations_base_courses_graph)) { foreach ($evaluations_base_courses_graph as $course_code => $img_html) { $html .= '

'.$course_code.'

'; $html .= $img_html; } } // display evaluations base courses graph if (!empty($evaluations_courses_in_sessions_graph)) { foreach ($evaluations_courses_in_sessions_graph as $session_id => $courses) { $session_name = api_get_session_name($session_id); $html .= '

'.$session_name.':'.get_lang('Evaluations').'

'; foreach ($courses as $course_code => $img_html) { $html .= '

'.$course_code.'

'; $html .= $img_html; } } } } $html .= '

'; $data['column'] = $column; $data['content_html'] = $html; return $data; } /** * This method return a graph containing informations about evaluations * inside base courses, it's used inside get_block method for showing * it inside dashboard interface * @return string img html */ public function get_evaluations_base_courses_graph() { $graphs = array(); if (!empty($this->courses)) { $courses_code = array_keys($this->courses); foreach ($courses_code as $course_code) { $cats = Category::load(null, null, $course_code, null, null, null, false); if (isset($cats) && isset($cats[0])) { $alleval = $cats[0]->get_evaluations(null, true, $course_code); $alllinks = $cats[0]->get_links(null, true); $users = get_all_users($alleval, $alllinks); $datagen = new FlatViewDataGenerator ($users, $alleval, $alllinks); $evaluation_sumary = $datagen->get_evaluation_sumary_results(); if (!empty($evaluation_sumary)) { $items = array_keys($evaluation_sumary); $max = $min = $avg = array(); foreach ($evaluation_sumary as $evaluation) { $max[] = $evaluation['max']; $min[] = !empty($evaluation['min']) ? $evaluation['min'] : 0; $avg[] = $evaluation['avg']; } // Dataset definition $data_set = new pData; $data_set->AddPoint($max, "Max"); $data_set->AddPoint($avg, "Avg"); $data_set->AddPoint($min, "Min"); $data_set->AddPoint($items, "Items"); $data_set->SetXAxisName(get_lang('EvaluationName')); $data_set->SetYAxisName(get_lang('Percentage')); $data_set->AddAllSeries(); $data_set->RemoveSerie("Items"); $data_set->SetAbsciseLabelSerie("Items"); $graph_id = $this->user_id.'StudentEvaluationGraph'; $cache = new pCache(); // the graph id $data = $data_set->GetData(); if ($cache->IsInCache($graph_id, $data)) { //if we already created the img $img_file = $cache->GetHash($graph_id, $data); } else { // Initialise the graph $angle = -30; $test = new pChart($this->bg_width,$this->bg_height); $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8); $test = $test->fixHeightByRotation( $data_set->GetData(), $data_set->GetDataDescription(), $angle ); $test->setGraphArea(50, 30, $this->bg_width-75, $this->bg_height - 75); $test->drawFilledRoundedRectangle( 7, 7, $this->bg_width-20, $test->YSize - 20, 5, 240, 240, 240 ); $test->drawRoundedRectangle( 5, 5, $this->bg_width-18, $test->YSize - 18, 5, 230, 230, 230 ); $test->drawGraphArea(255,255,255,TRUE); $test->setFixedScale(0,100,5); $test->drawScale( $data_set->GetData(), $data_set->GetDataDescription(), SCALE_ADDALL, 150, 150, 150, TRUE, $angle, 2, TRUE ); $test->setColorPalette(0,105,221,34); $test->setColorPalette(1,255,135,30); $test->setColorPalette(2,255,0,0); $test->drawGrid(4,TRUE,230,230,230,50); // Draw the 0 line $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',6); $test->drawTreshold(0,143,55,72,TRUE,TRUE); // Draw the bar graph $test->drawOverlayBarGraph($data_set->GetData(),$data_set->GetDataDescription(), 90); // Finish the graph $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8); $test->drawLegend($this->bg_width-80,20,$data_set->GetDataDescription(),255,255,255); $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',10); //$test->drawTitle(50,22,$course_code,50,50,50,185); $test->setColorPalette(0,50,50,50); $test->setColorPalette(1,50,50,50); $test->setColorPalette(2,50,50,50); $test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),array("Min", "Max", "Avg")); $cache->WriteToCache($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)) { $graphs[$course_code] = '

'; } } } } // end for } return $graphs; } /** * This method return a graph containing information about evaluations * inside courses in sessions, it's used inside get_block method for * showing it inside dashboard interface * @return string img html */ public function get_evaluations_courses_in_sessions_graph() { $graphs = array(); if (!empty($this->sessions)) { $session_ids = array_keys($this->sessions); foreach ($session_ids as $session_id) { $courses_code = array_keys(Tracking::get_courses_list_from_session($session_id)); $courses_graph = array(); foreach ($courses_code as $course_code) { $cats = Category::load(null, null, $course_code, null, null, $session_id); if (isset($cats) && isset($cats[0])) { $alleval = $cats[0]->get_evaluations(null, true, $course_code); $alllinks = $cats[0]->get_links(null, true); $users = get_all_users($alleval, $alllinks); $datagen = new FlatViewDataGenerator ($users, $alleval, $alllinks); $evaluation_sumary = $datagen->get_evaluation_sumary_results(); if (!empty($evaluation_sumary)) { $items = array_keys($evaluation_sumary); $max = $min = $avg = array(); foreach ($evaluation_sumary as $evaluation) { $max[] = $evaluation['max']; $min[] = $evaluation['min']; $avg[] = $evaluation['avg']; } // Dataset definition $data_set = new pData; $data_set->AddPoint($max, "Max"); $data_set->AddPoint($avg, "Avg"); $data_set->AddPoint($min, "Min"); $data_set->AddPoint($items, "Items"); $data_set->SetXAxisName(get_lang('EvaluationName')); $data_set->SetYAxisName(get_lang('Percentage')); $data_set->AddAllSeries(); $data_set->RemoveSerie("Items"); $data_set->SetAbsciseLabelSerie("Items"); $graph_id = $this->user_id.'StudentEvaluationGraph'; $cache = new pCache(); // the graph id $data = $data_set->GetData(); if ($cache->IsInCache($graph_id, $data)) { //if we already created the img $img_file = $cache->GetHash($graph_id, $data); } else { // Initialise the graph $angle = -30; $test = new pChart($this->bg_width, $this->bg_height); $test->setFontProperties(api_get_path(LIBRARY_PATH) . 'pchart/fonts/tahoma.ttf', 8); $test->fixHeightByRotation( $data_set->GetData(), $data_set->GetDataDescription(), $angle ); $test->setGraphArea(50, 30, $this->bg_width - 75, $this->bg_height - 75); $test->drawFilledRoundedRectangle( 7, 7, $this->bg_width - 20, $test->YSize - 20, 5, 240, 240, 240 ); $test->drawRoundedRectangle( 5, 5, $this->bg_width - 18, $test->YSize - 18, 5, 230, 230, 230 ); $test->drawGraphArea(255,255,255,TRUE); $test->setFixedScale(0,100,5); $test->drawScale( $data_set->GetData(), $data_set->GetDataDescription(), SCALE_ADDALL, 150, 150, 150, TRUE, $angle, 2, TRUE ); $test->setColorPalette(0,105,221,34); $test->setColorPalette(1,255,135,30); $test->setColorPalette(2,255,0,0); $test->drawGrid(4,TRUE,230,230,230,50); // Draw the 0 line $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',6); $test->drawTreshold(0,143,55,72,TRUE,TRUE); // Draw the bar graph $test->drawOverlayBarGraph($data_set->GetData(),$data_set->GetDataDescription(), 100); // Finish the graph $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8); $test->drawLegend($this->bg_width-80,20,$data_set->GetDataDescription(),255,255,255); $test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',10); $test->setColorPalette(0,50,50,50); $test->setColorPalette(1,50,50,50); $test->setColorPalette(2,50,50,50); $test->writeValues($data_set->GetData(),$data_set->GetDataDescription(),array("Min", "Max", "Avg")); $cache->WriteToCache($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)) { $courses_graph[$course_code] = '

'; } } } } if (!empty($courses_graph)) { $graphs[$session_id] = $courses_graph; } } } return $graphs; } }

'.get_lang('EvaluationsGraph').'