/**
* eval_ccpc_genGraphPie - Génère un graphique de type camenbert sous forme d'image au format PNG
*
* @category : eval_ccpc_functions
* @param array $data Données à partir desquelles le graphique est généré
* @return string URL de l'image générée
*
* @Author Ali Bellamine
*
* Structure de $data :<br>
* ['data'][nom du label] => (int) Valeur liée au label<br>
* ['settings']['height'] => (int) Hauteur du graphique (en px)<br>
* ['settings']['width'] => (int) Largeur du graphique (en px)
*
*/
function eval_ccpc_genGraphPie($data)
{
// On vérifie les données fournit
if (isset($data) && isset($data['data']) && count($data['data']) > 0) {
// On récupère le hash de $data
$hash = md5(json_encode($data));
// Chemin du fichier
$filePath = PLUGIN_PATH . 'cache/' . $hash . '.png';
$filePathURI = ROOT . 'evaluations/ccpc/cache/' . $hash . '.png';
// Si le hash existe déjà : on renvoie le lien de l'image // sinon en crée le graphique
if (is_file($filePath)) {
return $filePathURI;
} else {
// On crée l'image
/* On inclut la librairie */
require_once PLUGIN_PATH . 'core/pChart2.1.4/class/pData.class.php';
require_once PLUGIN_PATH . 'core/pChart2.1.4/class/pDraw.class.php';
require_once PLUGIN_PATH . 'core/pChart2.1.4/class/pImage.class.php';
/* On crée l'objet pData */
// Préparation des données
$tempDataArray = array();
// Contient les données chiffrés de chaque part du camenbert
$tempLegendArray = array();
// Contient la légend chaque part de camenbert
foreach ($data['data'] as $tempDataLegend => $tempDataValue) {
$tempLegendArray[] = $tempDataLegend;
if (isset($tempDataValue) && is_numeric($tempDataValue)) {
$tempDataArray[] = $tempDataValue;
} else {
return FALSE;
}
}
$MyData = new pData();
$MyData->addPoints($tempDataArray, 'Values');
$MyData->addPoints($tempLegendArray, 'Label');
$MyData->setAbscissa("Label");
/* On crée l'objet pChart */
if (isset($data['settings']['width'])) {
$width = $data['settings']['width'];
} else {
$width = 600;
}
if (isset($data['settings']['height'])) {
$height = $data['settings']['height'];
} else {
$height = 300;
}
$myPicture = new pImage($width, $height, $MyData);
$myPicture->setFontProperties(array("FontName" => PLUGIN_PATH . 'core/pChart2.1.4/fonts/verdana.ttf', "FontSize" => 8, "R" => 223, "G" => 223, "B" => 223));
/* Set the graph area */
$myPicture->setGraphArea(10, 20, $width - 20, $height - 20);
$myPicture->drawGradientArea(10, 20, $width - 20, $height - 20, DIRECTION_HORIZONTAL, array("StartR" => 200, "StartG" => 200, "StartB" => 200, "EndR" => 255, "EndG" => 255, "EndB" => 255, "Alpha" => 30));
/* Draw the chart scale */
$scaleSettings = array("RemoveXAxis" => TRUE, "AxisAlpha" => 10, "TickAlpha" => 10, "DrawXLines" => FALSE, "Mode" => SCALE_MODE_START0, "GridR" => 0, "GridG" => 0, "GridB" => 0, "GridAlpha" => 10, "Pos" => SCALE_POS_TOPBOTTOM);
$myPicture->drawScale($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->drawBarChartAli(array("DisplayValues" => TRUE, "DisplayShadow" => TRUE, "DisplayPos" => LABEL_POS_INSIDE, "Rounded" => TRUE, "Surrounding" => 30));
$myPicture->render($filePath);
return $filePathURI;
}
} else {
return FALSE;
}
}
