/**
* This method return a graph containing information about students evaluation,
* it's used inside get_block method for showing it inside dashboard interface
* @return string img html
*/
public function get_students_attendance_graph()
{
$students = $this->students;
$attendance = new Attendance();
// get data
$attendances_faults_avg = array();
if (is_array($students) && count($students) > 0) {
foreach ($students as $student) {
$student_id = $student['user_id'];
//$student_info = api_get_user_info($student_id);
// get average of faults in attendances by student
$results_faults_avg = $attendance->get_faults_average_inside_courses($student_id);
if (!empty($results_faults_avg)) {
$attendances_faults_avg[$student['lastname']] = $results_faults_avg['porcent'];
} else {
$attendances_faults_avg[$student['lastname']] = 0;
}
}
}
arsort($attendances_faults_avg);
$usernames = array_keys($attendances_faults_avg);
$faults = array();
foreach ($usernames as $username) {
$faults[] = $attendances_faults_avg[$username];
}
$graph = '';
$img_file = '';
if (is_array($usernames) && count($usernames) > 0) {
// Defining data
$dataSet = new pData();
$dataSet->addPoints($faults, 'Serie1');
$dataSet->addPoints($usernames, 'Labels');
$dataSet->setSerieDescription('Series1', get_lang('Average'));
$dataSet->setSerieDescription('Labels', get_lang('User'));
$dataSet->setAbscissa('Labels');
$dataSet->setAbscissaName(get_lang('User'));
$dataSet->setAxisName(0, get_lang('Attendance'));
$palette = array('0' => array('R' => 186, 'G' => 206, 'B' => 151, 'Alpha' => 100), '1' => array('R' => 210, 'G' => 148, 'B' => 147, 'Alpha' => 100), '2' => array('R' => 148, 'G' => 170, 'B' => 208, 'Alpha' => 100), '3' => array('R' => 221, 'G' => 133, 'B' => 61, 'Alpha' => 100), '4' => array('R' => 65, 'G' => 153, 'B' => 176, 'Alpha' => 100), '5' => array('R' => 114, 'G' => 88, 'B' => 144, 'Alpha' => 100), '6' => array('R' => 138, 'G' => 166, 'B' => 78, 'Alpha' => 100), '7' => array('R' => 171, 'G' => 70, 'B' => 67, 'Alpha' => 100), '8' => array('R' => 69, 'G' => 115, 'B' => 168, 'Alpha' => 100));
// Cache definition
$cachePath = api_get_path(SYS_ARCHIVE_PATH);
$myCache = new pCache(array('CacheFolder' => substr($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 {
$maxCounts = max(count($usernames), count($faults));
if ($maxCounts < 5) {
$heightSize = 200;
} else {
$heightSize = $maxCounts * 40;
}
/* Create the pChart object */
$widthSize = 480;
$angle = 40;
$myPicture = new pImage($widthSize, $heightSize, $dataSet);
/* Turn of Antialiasing */
$myPicture->Antialias = false;
/* Add a border to the picture */
$myPicture->drawRectangle(0, 0, $widthSize - 1, $heightSize - 1, array('R' => 0, 'G' => 0, 'B' => 0));
/* Set the default font */
$myPicture->setFontProperties(array('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(80, 40, $widthSize - 20, $heightSize - 40);
/* Draw the scale */
$scaleSettings = array('GridR' => 200, 'GridG' => 200, 'GridB' => 200, 'DrawSubTicks' => true, 'CycleBackground' => true, 'Mode' => SCALE_MODE_ADDALL_START0, 'Pos' => SCALE_POS_TOPBOTTOM, 'DrawXLines' => false, 'LabelRotation' => $angle);
$myPicture->drawScale($scaleSettings);
/* Turn on shadow computing */
$myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10));
/* Draw the chart */
$myPicture->setShadow(true, array('X' => 1, 'Y' => 1, 'R' => 0, 'G' => 0, 'B' => 0, 'Alpha' => 10));
$settings = array('OverrideColors' => $palette, 'Gradient' => false, 'GradientMode' => GRADIENT_SIMPLE, 'DisplayPos' => LABEL_POS_TOP, 'DisplayValues' => true, 'DisplayR' => 0, 'DisplayG' => 0, 'DisplayB' => 0, 'DisplayShadow' => true, 'Surrounding' => 10);
$myPicture->drawBarChart($settings);
/* 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 = '<img src="' . $imgPath . '" >';
} else {
$graph = '<p>' . api_convert_encoding(get_lang('GraphicNotAvailable'), 'UTF-8') . '</p>';
}
return $graph;
}
public function get_students_content_html_for_drh()
{
$attendance = new Attendance();
$students = $this->students;
$content = '<div style="margin:5px;">';
$content .= '<h3><font color="#000">' . get_lang('YourStudents') . '</font></h3>';
$students_table = null;
if (count($students) > 0) {
$students_table .= '<table class="data_table">';
$students_table .= '<tr>
<th>' . get_lang('User') . '</th>
<th>' . get_lang('AttendancesFaults') . '</th>
<th>' . get_lang('Evaluations') . '</th>
</tr>';
$i = 1;
foreach ($students as $student) {
$student_id = $student['user_id'];
$firstname = $student['firstname'];
$lastname = $student['lastname'];
$username = $student['username'];
// get average of faults in attendances by student
$results_faults_avg = $attendance->get_faults_average_inside_courses($student_id);
if (!empty($results_faults_avg)) {
$attendances_faults_avg = '<a title="' . get_lang('GoToStudentDetails') . '" href="' . api_get_path(WEB_CODE_PATH) . 'mySpace/myStudents.php?student=' . $student_id . '">' . $results_faults_avg['faults'] . '/' . $results_faults_avg['total'] . ' (' . $results_faults_avg['porcent'] . '%)</a>';
} else {
$attendances_faults_avg = '0%';
}
$courses_by_user = CourseManager::get_courses_list_by_user_id($student_id, true);
$evaluations_avg = 0;
$score = $weight = 0;
foreach ($courses_by_user as $course) {
$course_code = $course['code'];
$cats = Category::load(null, null, $course_code, null, null, null, false);
$scoretotal = array();
if (isset($cats) && isset($cats[0])) {
$scoretotal = $cats[0]->calc_score($student_id, $course_code);
}
if (!empty($scoretotal)) {
$score += $scoretotal[0];
$weight += $scoretotal[1];
}
}
if (!empty($weight)) {
$evaluations_avg = '<a title="' . get_lang('GoToStudentDetails') . '" href="' . api_get_path(WEB_CODE_PATH) . 'mySpace/myStudents.php?student=' . $student_id . '">' . round($score, 2) . '/' . round($weight, 2) . '(' . round($score / $weight * 100, 2) . ' %)</a>';
}
if ($i % 2 == 0) {
$class_tr = 'row_odd';
} else {
$class_tr = 'row_even';
}
$students_table .= '<tr class="' . $class_tr . '">
<td>' . api_get_person_name($firstname, $lastname) . ' (' . $username . ')</td>
<td>' . $attendances_faults_avg . '</td>
<td>' . $evaluations_avg . '</td>
</tr>';
$i++;
}
$students_table .= '</table>';
} else {
$students_table .= get_lang('ThereIsNoInformationAboutYourStudents');
}
$content .= $students_table;
if (count($students) > 0) {
$content .= '<div style="text-align:right;margin-top:10px;">
<a href="' . api_get_path(WEB_CODE_PATH) . 'mySpace/index.php?view=admin&display=yourstudents">' . get_lang('SeeMore') . '</a>
</div>';
}
$content .= '</div>';
return $content;
}
/**
* This method return a graph containing informations about students evaluation, it's used inside get_block method for showing it inside dashboard interface
* @return string img html
*/
public function get_students_attendance_graph()
{
$students = $this->students;
$attendance = new Attendance();
// get data
$attendances_faults_avg = array();
if (is_array($students) && count($students) > 0) {
foreach ($students as $student) {
$student_id = $student['user_id'];
//$student_info = api_get_user_info($student_id);
// get average of faults in attendances by student
$results_faults_avg = $attendance->get_faults_average_inside_courses($student_id);
if (!empty($results_faults_avg)) {
$attendances_faults_avg[$student['lastname']] = $results_faults_avg['porcent'];
} else {
$attendances_faults_avg[$student['lastname']] = 0;
}
}
}
arsort($attendances_faults_avg);
$usernames = array_keys($attendances_faults_avg);
$faults = array();
foreach ($usernames as $username) {
$faults[] = $attendances_faults_avg[$username];
}
$graph = '';
$img_file = '';
if (is_array($usernames) && count($usernames) > 0) {
// Defining data
$data_set = new pData();
$data_set->AddPoint($faults, "Promedio");
$data_set->AddPoint($usernames, "Usuario");
$data_set->AddAllSeries();
$data_set->SetAbsciseLabelSerie("Usuario");
// prepare cache for saving image
$graph_id = $this->user_id . 'StudentEvaluationGraph';
// the graph id
$cache = new pCache(api_get_path(SYS_ARCHIVE_PATH));
$data = $data_set->GetData();
// return $this->DataDescription
if ($cache->IsInCache($graph_id, $data_set->GetData())) {
//if (0) {
//if we already created the img
$img_file = $cache->GetHash($graph_id, $data_set->GetData());
// image file with hash
} else {
if (count($usernames) < 5) {
$height = 200;
} else {
$height = count($usernames) * 40;
}
// Initialise the graph
$test = new MyHorBar(400, $height + 30);
$test->setFontProperties(api_get_path(LIBRARY_PATH) . 'pchart/fonts/tahoma.ttf', 8);
$test->setGraphArea(100, 30, 370, $height);
$test->drawFilledRoundedRectangle(7, 7, 393, $height, 5, 240, 240, 240);
$test->drawRoundedRectangle(5, 5, 395, $height, 5, 230, 230, 230);
$test->drawGraphArea(255, 255, 255, TRUE);
//X axis
$test->setFixedScale(0, 100, 10);
//var_dump($data_set->GetDataDescription());
$test->drawHorScale($data_set->GetData(), $data_set->GetDataDescription(), SCALE_ADDALL, 150, 150, 150, TRUE, 0, 0, TRUE);
$test->setColorPalette(0, 255, 0, 0);
$test->drawHorGrid(10, 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
$test->drawHorBarGraph($data_set->GetData(), $data_set->GetDataDescription(), TRUE, 50);
$cache->WriteToCache($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;
}