user_id = $user_id;
if (api_is_platform_admin()) {
$this->sessions = SessionManager::get_sessions_list();
} else if (api_is_drh()) {
$this->sessions = SessionManager::get_sessions_followed_by_drh($user_id);
}
$this->path = 'block_evaluation_graph';
*/
}
/**
* 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();
/*
if (api_is_platform_admin()) {
$student_content_html = $this->get_students_content_html_for_platform_admin();
} else if (api_is_drh()) {*/
$evaluations_graph = $this->get_evaluations_graph();
//}
$html = '
'.$evaluations_graph.'
';
$data['column'] = $column;
$data['content_html'] = $html;
return $data;
}
/**
* This method return a graph containing informations about evaluations, it's used inside get_block method for showing it inside dashboard interface
* @return string img html
*/
public function get_evaluations_graph() {
/*
$graph = '';
$course_code = 'CURSO1';
$cats = Category::load(null, null, $course_code, null, null, null, false);
$alleval = $cats[0]->get_evaluations(null, true, 'CURSO1');
$alllinks = $cats[0]->get_links(null, true);
$users = get_all_users($alleval, $alllinks);
$printable_data = get_evaluation_sumary_result($users, $alleval, $alllinks);
//var_dump($printable_data);
/*
$links = array();
$i = 1;
foreach ($printable_data[0] as $link) {
if ($i>2) $links[$i] = $link;
$i++;
}
foreach ($printable_data[1] as $score) {
$x = 1;
$scores = array();
foreach($score as $sc) {
if ($x>2) $scores[][$i][] = $sc;
$x++;
}
}
*/
// Dataset definition
$data_set = new pData;
$data_set->AddPoint(array(3,15,15,8,15),"Serie1");
$data_set->AddPoint(array(7,8.5,8.5,5,10),"Serie2");
$data_set->AddPoint(array(2,2,2,2,5),"Serie3");
$data_set->AddPoint(array('eje1','eje2','forito','tareita','leccion'),"Serie4");
//$data_set->AddAllSeries();
//$data_set->SetAbsciseLabelSerie();
$data_set->AddAllSeries();
$data_set->RemoveSerie("Serie4");
$data_set->SetAbsciseLabelSerie("Serie4");
$data_set->SetSerieName("Maximum","Serie1");
$data_set->SetSerieName("Average","Serie2");
$data_set->SetSerieName("Minimum","Serie3");
$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
$test = new pChart(450,230);
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
$test->setGraphArea(50,30,330,200);
$test->drawFilledRoundedRectangle(7,7,343,223,5,240,240,240);
$test->drawRoundedRectangle(5,5,345,225,5,230,230,230);
$test->drawGraphArea(255,255,255,TRUE);
$test->drawScale($data_set->GetData(),$data_set->GetDataDescription(),SCALE_ADDALL,150,150,150,TRUE,0,2,TRUE);
$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
$test->drawStackedBarGraph($data_set->GetData(),$data_set->GetDataDescription(),TRUE);
// Finish the graph
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
$test->drawLegend(596,150,$data_set->GetDataDescription(),255,255,255);
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',10);
$test->drawTitle(50,22,"Example 20",50,50,50,185);
$cache->WriteToCache($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_file.')
';
}
return $graph;
}
}
?>