function display_graph_by_resource()
{
require_once api_get_path(LIBRARY_PATH) . 'pchart/pData.class.php';
require_once api_get_path(LIBRARY_PATH) . 'pchart/pChart.class.php';
require_once api_get_path(LIBRARY_PATH) . 'pchart/pCache.class.php';
$header_name = $this->datagen->get_header_names();
$total_users = $this->datagen->get_total_users_count();
$img_file = '';
if ($this->datagen->get_total_items_count() > 0 && $total_users > 0) {
//Removing first name
array_shift($header_name);
//Removing last name
array_shift($header_name);
$displayscore = ScoreDisplay::instance();
$customdisplays = $displayscore->get_custom_score_display_settings();
if (is_array($customdisplays) && count($customdisplays)) {
$user_results = $this->datagen->get_data_to_graph2();
$pre_result = $new_result = array();
$DataSet = new pData();
//filling the Dataset
foreach ($user_results as $result) {
//print_r($result);
for ($i = 0; $i < count($header_name); $i++) {
$pre_result[$i + 3][] = $result[$i + 1];
}
}
$i = 0;
$show_draw = false;
$resource_list = array();
$pre_result2 = array();
foreach ($pre_result as $key => $res_array) {
rsort($res_array);
$pre_result2[] = $res_array;
}
//@todo when a display custom does not exist the order of the color does not match
//filling all the answer that are not responded with 0
rsort($customdisplays);
if ($total_users > 0) {
foreach ($pre_result2 as $key => $res_array) {
$key_list = array();
foreach ($res_array as $user_result) {
$resource_list[$key][$user_result[1]] += 1;
$key_list[] = $user_result[1];
}
foreach ($customdisplays as $display) {
if (!in_array($display['display'], $key_list)) {
$resource_list[$key][$display['display']] = 0;
}
}
$i++;
}
}
//fixing $resource_list
$max = 0;
$new_list = array();
foreach ($resource_list as $key => $value) {
$new_value = array();
foreach ($customdisplays as $item) {
if ($value[$item['display']] > $max) {
$max = $value[$item['display']];
}
$new_value[$item['display']] = strip_tags($value[$item['display']]);
}
$new_list[] = $new_value;
}
$resource_list = $new_list;
$i = 1;
$j = 0;
foreach ($resource_list as $key => $resource) {
$new_resource_list = $new_resource_list_name = array();
$DataSet = new pData();
// Reverse array, otherwise we get highest values first
$resource = array_reverse($resource, true);
foreach ($resource as $name => $cant) {
$DataSet->AddPoint($cant, "Serie" . $j);
$DataSet->SetSerieName(strip_tags($name), "Serie" . $j);
$j++;
}
//print_r($pre_result); print_r($header_name);
// Dataset definition
$DataSet->AddAllSeries();
$DataSet->SetAbsciseLabelSerie('');
$DataSet->SetXAxisName(get_lang('GradebookSkillsRanking'));
$DataSet->SetYAxisName(get_lang('Students'));
$show_draw = true;
// Cache definition
$Cache = new pCache();
// the graph id
$gradebook_id = intval($_GET['selectcat']);
$graph_id = api_get_user_id() . 'ByResource' . $gradebook_id . api_get_course_id() . api_get_session_id();
if ($show_draw) {
//if ($Cache->IsInCache($graph_id, $DataSet->GetData())) {
if (0) {
//if we already created the img we get the img file id
//echo 'in cache';
$img_file = $Cache->GetHash($graph_id, $DataSet->GetData());
} else {
// if the image does not exist in the archive/ folder
// Initialise the graph
$chart_size_w = 480;
$chart_size_h = 250;
$Test = new pChart($chart_size_w, $chart_size_h);
// Adding the color schemma
$Test->loadColorPalette(api_get_path(LIBRARY_PATH) . "pchart/palette/pastel.txt");
// set font of the axes
$Test->setFontProperties(api_get_path(LIBRARY_PATH) . "pchart/fonts/tahoma.ttf", 8);
$area_graph_w = $chart_size_w - 130;
$Test->setGraphArea(50, 30, $area_graph_w, $chart_size_h - 50);
$Test->drawFilledRoundedRectangle(5, 5, $chart_size_w - 1, $chart_size_h - 20, 5, 240, 240, 240);
//$Test->drawRoundedRectangle(5,5,790,330,5,230,230,230);
//background color area & stripe or not
$Test->drawGraphArea(255, 255, 255, TRUE);
//Setting max height by default see #3296
if (!empty($max)) {
$Test->setFixedScale(0, $max);
}
$Test->drawScale($DataSet->GetData(), $DataSet->GetDataDescription(), SCALE_ADDALLSTART0, 150, 150, 150, TRUE, 0, 0, FALSE);
//background grid
$Test->drawGrid(4, TRUE, 230, 230, 230, 50);
// Draw the 0 line
//$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",6);
//$Test->drawTreshold(0,143,55,72,TRUE,TRUE);
// Draw the bar graph
$Test->drawBarGraph($DataSet->GetData(), $DataSet->GetDataDescription(), TRUE);
//Set legend properties: width, height and text color and font
$Test->setFontProperties(api_get_path(LIBRARY_PATH) . "pchart/fonts/tahoma.ttf", 9);
$Test->drawLegend($area_graph_w + 10, 50, $DataSet->GetDataDescription(), 255, 255, 255);
//Set title properties
$Test->setFontProperties(api_get_path(LIBRARY_PATH) . "pchart/fonts/tahoma.ttf", 10);
$Test->drawTitle(50, 22, strip_tags($header_name[$i - 1]), 50, 50, 80, $chart_size_w - 50);
//------------------
//echo 'not in cache';
$Cache->WriteToCache($graph_id, $DataSet->GetData(), $Test);
//ob_start();
//$Test->Stroke();
//ob_end_clean();
$img_file = $Cache->GetHash($graph_id, $DataSet->GetData());
}
echo '<img src="' . api_get_path(WEB_ARCHIVE_PATH) . $img_file . '" >';
if ($i % 2 == 0 && $i != 0) {
echo '<br />';
}
$i++;
}
}
//end foreach
} else {
echo get_lang('ToViewGraphScoreRuleMustBeEnabled');
}
// Pie charts
/*
$show_draw = false;
$resource_list = array();
//print_r($pre_result_pie);
if ($total_users>0) {
foreach($pre_result_pie as $key=>$res_array) {
//$resource_list
foreach($res_array as $user_result) {
$total+= $user_result / ($total_users*100);
}
echo $total;
//echo $total = $res / ($total_users*100);
echo '<br>';
//$DataSet->AddPoint($total,"Serie".$i);
//$DataSet->SetSerieName($header_name[$i-1],"Serie".$i);
}
}
//here--------------
foreach($resource_list as $key=>$resource) {
$new_resource_list = $new_resource_list_name = array();
foreach($resource as $name=>$cant) {
$new_resource_list[]=$cant;
$new_resource_list_name[]=$name;
}
//Pie chart
$DataSet = new pData;
$DataSet->AddPoint($new_resource_list,"Serie1");
$DataSet->AddPoint($new_resource_list_name,"Serie2");
$DataSet->AddAllSeries();
$DataSet->SetAbsciseLabelSerie("Serie2");
$Test = new pChart(400,300);
$Test->loadColorPalette(api_get_path(LIBRARY_PATH)."pchart/palette/soft_tones.txt");
// background
//$Test->drawFilledRoundedRectangle(7,7,293,193,5,240,240,240);
// border color
$Test->drawRoundedRectangle(5,5,295,195,5,230,230,230);
// This will draw a shadow under the pie chart
//$Test->drawFilledCircle(122,102,70,200,200,200);
//Draw the pie chart
$Test->setFontProperties(api_get_path(LIBRARY_PATH)."pchart/fonts/tahoma.ttf",8);
$Test->drawBarGraph($DataSet->GetData(),$DataSet->GetDataDescription(),TRUE);
$tmp_path = api_get_path(SYS_ARCHIVE_PATH);
$Test->drawBasicPieGraph($DataSet->GetData(),$DataSet->GetDataDescription(),120,100,70,PIE_PERCENTAGE,255,255,218);
$Test->drawPieLegend(230,15,$DataSet->GetData(),$DataSet->GetDataDescription(),250,250,250);
$user_id = api_get_user_id();
$img_file_generated_name = $key.uniqid('').'gradebook.png';
$Test->Render($tmp_path.$img_file_generated_name);
chmod($tmp_path.$img_file_generated_name, api_get_permissions_for_new_files());
if ($i % 2 == 0 && $i!= 0) {
echo '<br>';
}
echo '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file_generated_name.'">';
}
*/
}
}
/**
* 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 $graphs;
}
/**
* Generates a big graph with the number of best results
* @param array
*/
static function generate_exercise_result_graph($attempts)
{
require_once api_get_path(LIBRARY_PATH).'pchart/pData.class.php';
require_once api_get_path(LIBRARY_PATH).'pchart/pChart.class.php';
require_once api_get_path(LIBRARY_PATH).'pchart/pCache.class.php';
$exercise_title = strip_tags($attempts['title']);
$attempts = $attempts['data'];
$my_exercise_result_array = $exercise_result = array();
if (empty($attempts)) {
return null;
}
foreach ($attempts as $attempt) {
if (api_get_user_id() == $attempt['exe_user_id']) {
if ($attempt['exe_weighting'] != 0 ) {
$my_exercise_result_array[]= $attempt['exe_result']/$attempt['exe_weighting'];
}
} else {
if ($attempt['exe_weighting'] != 0 ) {
$exercise_result[]= $attempt['exe_result']/$attempt['exe_weighting'];
}
}
}
//Getting best result
rsort($my_exercise_result_array);
$my_exercise_result = 0;
if (isset($my_exercise_result_array[0])) {
$my_exercise_result = $my_exercise_result_array[0] *100;
}
$max = 100;
$pieces = 5 ;
$part = round($max / $pieces);
$x_axis = array();
$final_array = array();
$my_final_array = array();
for ($i=1; $i <=$pieces; $i++) {
$sum = 1;
if ($i == 1) {
$sum = 0;
}
$min = ($i-1)*$part + $sum;
$max = ($i)*$part;
$x_axis[]= $min." - ".$max;
$count = 0;
foreach($exercise_result as $result) {
$percentage = $result*100;
//echo $percentage.' - '.$min.' - '.$max."<br />";
if ($percentage >= $min && $percentage <= $max) {
//echo ' is > ';
$count++;
}
}
//echo '<br />';
$final_array[]= $count;
if ($my_exercise_result >= $min && $my_exercise_result <= $max) {
$my_final_array[] = 1;
} else {
$my_final_array[] = 0;
}
}
//Fix to remove the data of the user with my data
for($i = 0; $i<=count($my_final_array); $i++) {
if (!empty($my_final_array[$i])) {
$my_final_array[$i] = $final_array[$i] + 1; //Add my result
$final_array[$i] = 0;
}
}
$cache = new pCache();
// Dataset definition
$data_set = new pData();
$data_set->AddPoint($final_array,"Serie1");
$data_set->AddPoint($my_final_array,"Serie2");
$data_set->AddPoint($x_axis,"Serie3");
$data_set->AddAllSeries();
$data_set->SetAbsciseLabelSerie('Serie3');
$data_set->SetSerieName(get_lang('Score'),"Serie1");
$data_set->SetSerieName(get_lang('MyResults'),"Serie2");
$data_set->SetXAxisName(get_lang("Score"));
// Initialise the graph
$main_width = 500;
$main_height = 250;
$main_graph = new pChart($main_width,$main_height);
$main_graph->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
$main_graph->setGraphArea(50,30, $main_width -20,$main_height -50);
$main_graph->drawFilledRoundedRectangle(10,10, $main_width- 10,$main_height -10,5,240,240,240);
$main_graph->drawRoundedRectangle(7,7,$main_width - 7,$main_height - 7,5,230,230,230);
$main_graph->drawGraphArea(255,255,255,TRUE);
//SCALE_NORMAL, SCALE_START0, SCALE_ADDALLSTART0
$main_graph->drawScale($data_set->GetData(),$data_set->GetDataDescription(),SCALE_ADDALLSTART0, 150,150,150,TRUE,0,1,TRUE);
$main_graph->drawGrid(4,TRUE,230,230,230,50);
// Draw the 0 line
$main_graph->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',6);
// $main_graph->drawTreshold(0,143,55,72,TRUE,TRUE);
// Draw the bar graph
$data_set->RemoveSerie("Serie3");
//$main_graph->drawBarGraph($data_set->GetData(),$data_set->GetDataDescription(),TRUE);
//$main_graph->drawStackedBarGraph($data_set->GetData(),$data_set->GetDataDescription(),TRUE);
$main_graph->drawOverlayBarGraph($data_set->GetData(),$data_set->GetDataDescription(), 100);
// Finish the graph
$main_graph->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
$main_graph->drawLegend($main_width - 120,$main_height -100,$data_set->GetDataDescription(),255,255,255);
$main_graph->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf',8);
$main_graph->drawTitle(180,22,$exercise_title,50,50,50);
$graph_id = 'exercise_result_graph'.Security::remove_XSS($_GET['course']).'-'.intval($_GET['session_id']).'-'.api_get_user_id();
if ($cache->IsInCache($graph_id, $data_set->GetData())) {
//if (0) {
//if we already created the img
//echo 'in cache';
$img_file = $cache->GetHash($graph_id,$data_set->GetData());
} else {
$cache->WriteToCache($graph_id, $data_set->GetData(), $main_graph);
ob_start();
$main_graph->Stroke();
ob_end_clean();
$img_file = $cache->GetHash($graph_id, $data_set->GetData());
}
$html = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
return $html;
}
/**
* 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) {
$data_set = new pData();
foreach ($user_ids as $user_id) {
$teacher_info = api_get_user_info($user_id);
$username = $teacher_info['username'];
$time_by_days = array();
foreach ($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;
}
$data_set->AddPoint($time_by_days, $username);
$data_set->AddSerie($username);
}
$last_week = date('Y-m-d', $a_last_week[0]) . ' ' . get_lang('To') . ' ' . date('Y-m-d', $a_last_week[6]);
$days_on_week = array();
foreach ($a_last_week as $weekday) {
$days_on_week[] = date('d/m', $weekday);
}
$data_set->AddPoint($days_on_week, "Days");
$data_set->SetXAxisName($last_week);
$data_set->SetYAxisName(get_lang('Minutes'));
$data_set->SetAbsciseLabelSerie("Days");
$graph_id = $this->user_id . 'TeacherConnectionsGraph';
$cache = new pCache();
// the graph id
$data = $data_set->GetData();
if ($cache->IsInCache($graph_id, $data_set->GetData())) {
//if we already created the img
$img_file = $cache->GetHash($graph_id, $data_set->GetData());
} else {
// Initializing the graph
$bg_width = 440;
$bg_height = 350;
$test = new pChart($bg_width + 10, $bg_height + 20);
$test->setFontProperties(api_get_path(LIBRARY_PATH) . 'pchart/fonts/tahoma.ttf', 8);
$test->setGraphArea(65, 30, $bg_width - 70, $bg_height - 50);
$test->drawFilledRoundedRectangle(7, 7, $bg_width, $bg_height, 5, 240, 240, 240);
$test->drawRoundedRectangle(5, 5, $bg_width + 2, $bg_height + 2, 5, 230, 230, 230);
$test->drawGraphArea(255, 255, 255, TRUE);
$test->drawScale($data_set->GetData(), $data_set->GetDataDescription(), SCALE_NORMAL, 150, 150, 150, TRUE, 0, 2, TRUE);
$test->drawGrid(4, TRUE, 230, 230, 230, 50);
// Drawing lines
//$test->drawLineGraph($data_set->GetData(),$data_set->GetDataDescription());
$test->drawFilledCubicCurve($data_set->GetData(), $data_set->GetDataDescription(), 0.1, 30);
//$test->drawPlotGraph($data_set->GetData(),$data_set->GetDataDescription(),3,2,255,255,255);
// Drawing Legend
$test->setFontProperties(api_get_path(LIBRARY_PATH) . 'pchart/fonts/tahoma.ttf', 8);
$test->drawLegend($bg_width - 80, 20, $data_set->GetDataDescription(), 204, 204, 255);
$test->writeValues($data_set->GetData(), $data_set->GetDataDescription(), array("Days"));
$cache->WriteToCache($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;
}
/**
* 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;
}
/**
* This function draw the graphic to be displayed on the user view as an image
*
* @param array $sql_result
* @param string $start_date
* @param string $end_date
* @param string $type
* @author Jorge Frisancho Jibaja
* @version OCT-22- 2010
* @return string
*/
function grapher($sql_result, $start_date, $end_date, $type = "") {
require_once api_get_path(LIBRARY_PATH).'pchart/pData.class.php';
require_once api_get_path(LIBRARY_PATH).'pchart/pChart.class.php';
require_once api_get_path(LIBRARY_PATH).'pchart/pCache.class.php';
if (empty($start_date)) { $start_date =""; }
if (empty($end_date)) { $end_date =""; }
if ($type == ""){ $type = 'day'; }
$main_year = $main_month_year = $main_day = array();
// get last 8 days/months
$last_days = 5;
$last_months = 3;
for ($i = $last_days; $i >= 0; $i--) {
$main_day[date ('d-m-Y', mktime () - $i * 3600 * 24)] = 0;
}
for ($i = $last_months; $i >= 0; $i--) {
$main_month_year[date ('m-Y', mktime () - $i * 30 * 3600 * 24)] = 0;
}
$i = 0;
if (is_array($sql_result) && count($sql_result) > 0) {
foreach ($sql_result as $key => $data) {
//creating the main array
$main_month_year[date('m-Y', $data['login'])] += float_format(($data['logout'] - $data['login']) / 60, 0);
$main_day[date('d-m-Y', $data['login'])] += float_format(($data['logout'] - $data['login']) / 60, 0);
if ($i > 500) {
break;
}
$i++;
}
switch ($type) {
case 'day':
$main_date = $main_day;
break;
case 'month':
$main_date = $main_month_year;
break;
case 'year':
$main_date = $main_year;
break;
}
// the nice graphics :D
$labels = array_keys($main_date);
if (count($main_date) == 1) {
$labels = $labels[0];
$main_date = $main_date[$labels];
}
$data_set = new pData();
$data_set->AddPoint($main_date, 'Q');
if (count($main_date)!= 1) {
$data_set->AddPoint($labels, 'Date');
}
$data_set->AddAllSeries();
$data_set->RemoveSerie('Date');
$data_set->SetAbsciseLabelSerie('Date');
$data_set->SetYAxisName(get_lang('Minutes', ''));
$graph_id = api_get_user_id().'AccessDetails'.api_get_course_id().$start_date.$end_date.$type;
$data_set->AddAllSeries();
$cache = new pCache();
// the graph id
$data = $data_set->GetData();
if ($cache->IsInCache($graph_id, $data_set->GetData())) {
//if (0) {
//if we already created the img
// echo 'in cache';
$img_file = $cache->GetHash($graph_id, $data_set->GetData());
} else {
// if the image does not exist in the archive/ folder
// Initialise the graph
$test = new pChart(760, 230);
//which schema of color will be used
$quant_resources = count($data[0]) - 1;
// Adding the color schemma
$test->loadColorPalette(api_get_path(LIBRARY_PATH).'pchart/palette/default.txt');
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf', 8);
$test->setGraphArea(70, 30, 680, 200);
$test->drawFilledRoundedRectangle(7, 7, 693, 223, 5, 240, 240, 240);
$test->drawRoundedRectangle(5, 5, 695, 225, 5, 230, 230, 230);
$test->drawGraphArea(255, 255, 255, TRUE);
$test->drawScale($data_set->GetData(), $data_set->GetDataDescription(), SCALE_START0, 150, 150, 150, TRUE, 0, 0);
$test->drawGrid(4, TRUE, 230, 230, 230, 50);
$test->setLineStyle(2);
// Draw the 0 line
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf', 6);
$test->drawTreshold(0, 143, 55, 72, TRUE, TRUE);
if (count($main_date) == 1) {
//Draw a graph
echo '<strong>'.$labels.'</strong><br/>';
$test->drawBarGraph($data_set->GetData(), $data_set->GetDataDescription(), TRUE);
} else {
//Draw the line graph
$test->drawLineGraph($data_set->GetData(), $data_set->GetDataDescription());
$test->drawPlotGraph($data_set->GetData(), $data_set->GetDataDescription(), 3, 2, 255, 255, 255);
}
// Finish the graph
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf', 8);
$test->setFontProperties(api_get_path(LIBRARY_PATH).'pchart/fonts/tahoma.ttf', 10);
$test->drawTitle(60, 22, get_lang('AccessDetails'), 50, 50, 50, 585);
//------------------
//echo 'not in cache';
$cache->WriteToCache($graph_id, $data_set->GetData(), $test);
ob_start();
$test->Stroke();
ob_end_clean();
$img_file = $cache->GetHash($graph_id, $data_set->GetData());
}
$foo_img = '<img src="'.api_get_path(WEB_ARCHIVE_PATH).$img_file.'">';
return $foo_img;
} else {
$foo_img = api_convert_encoding('<div id="messages" class="warning-message">'.get_lang('GraphicNotAvailable').'</div>','UTF-8');
return $foo_img;
}
}