/**
* @param Category $cat
* @param $users
* @param $alleval
* @param $alllinks
* @param $params
* @param null $mainCourseCategory
* @return array
*/
public static function get_printable_data($cat, $users, $alleval, $alllinks, $params, $mainCourseCategory = null)
{
$datagen = new FlatViewDataGenerator($users, $alleval, $alllinks, $params, $mainCourseCategory);
$offset = isset($_GET['offset']) ? $_GET['offset'] : '0';
$offset = intval($offset);
// step 2: generate rows: students
$datagen->category = $cat;
$count = $offset + 10 > $datagen->get_total_items_count() ? $datagen->get_total_items_count() - $offset : GRADEBOOK_ITEM_LIMIT;
$header_names = $datagen->get_header_names($offset, $count, true);
$data_array = $datagen->get_data(FlatViewDataGenerator::FVDG_SORT_LASTNAME, 0, null, $offset, $count, true, true);
$result = array();
foreach ($data_array as $data) {
$result[] = array_slice($data, 1);
}
$return = array($header_names, $result);
return $return;
}
/**
* 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] = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
}
}
}
}
if (!empty($courses_graph)) {
$graphs[$session_id] = $courses_graph;
}
}
}
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);
$users = GradebookUtils::get_all_users($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
$dataSet = new pData();
$dataSet->addPoints($min, 'Serie3');
$dataSet->addPoints($avg, 'Serie2');
$dataSet->addPoints($max, 'Serie1');
$dataSet->addPoints($items, 'Labels');
$dataSet->setSerieDescription('Serie1', get_lang('Max'));
$dataSet->setSerieDescription('Serie2', get_lang('Avg'));
$dataSet->setSerieDescription('Serie3', get_lang('Min'));
$dataSet->setAbscissa('Labels');
$dataSet->setAbscissaName(get_lang('EvaluationName'));
$dataSet->normalize(100, '%');
$dataSet->loadPalette(api_get_path(SYS_CODE_PATH) . 'palettes/pchart/default.color', true);
// Cache definition
$cachePath = api_get_path(SYS_ARCHIVE_PATH);
$myCache = new pCache(array('CacheFolder' => substr($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 {
/* Create the pChart object */
$widthSize = $this->bg_width;
$heightSize = $this->bg_height;
$fontSize = 8;
$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, 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(50, 30, $widthSize - 20, $heightSize - 100);
/* Draw the scale */
$scaleSettings = array('GridR' => 200, 'GridG' => 200, 'GridB' => 200, 'DrawSubTicks' => true, 'CycleBackground' => true, 'Mode' => SCALE_MODE_MANUAL, 'ManualScale' => array('0' => array('Min' => 0, 'Max' => 100)), '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('DisplayValues' => true, 'DisplaySize' => $fontSize, 'DisplayR' => 0, 'DisplayG' => 0, 'DisplayB' => 0, 'DisplayOrientation' => ORIENTATION_HORIZONTAL, 'Gradient' => false, 'Surrounding' => 30, 'InnerSurrounding' => 25);
$myPicture->drawStackedBarChart($settings);
$legendSettings = array('Mode' => LEGEND_HORIZONTAL, 'Style' => LEGEND_NOBORDER);
$myPicture->drawLegend($widthSize / 2, 15, $legendSettings);
/* 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) . $chartHash;
}
if (!empty($imgPath)) {
$courses_graph[$course_code] = '<img src="' . $imgPath . '">';
}
}
}
}
if (!empty($courses_graph)) {
$graphs[$session_id] = $courses_graph;
}
}
}
return $graphs;
}
