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mathilde |
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<?php
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/**
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* Classe CommunGraphiques.php regroupement de fonctions pour les graphiques
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* graphiques/#typegraphique/#bdnt.nn:#num_nomen --> renvoie un graphique avec les données connues
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*
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*
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* @package eflore-projets
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* @author Jean-Pascal MILCENT <jpm@tela-botanica.org>
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* @author Mathilde SALTHUN-LASSALLE <mathilde@tela-botanica.org>
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* @license GPL v3 <http://www.gnu.org/licenses/gpl.txt>
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* @license CECILL v2 <http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt>
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* @version 1.0
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* @copyright 1999-2011 Tela Botanica (accueil@tela-botanica.org)
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*/
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abstract class CommunGraphiques extends Commun{
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protected $parametres = array();
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protected $ressources = array();
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protected $Bdd;
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protected $config;
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protected $cache;
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protected $metadonnees;
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protected $version;
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protected $serviceNom = 'Graphiques';
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protected $graduations_id = array();
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protected $champs_ontologiques = array();
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protected $nomGraphique = array();
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protected $table = '';
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protected $requete_condition = "";
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protected $requete_champs;
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protected $convertisseur;
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protected $cheminGraphBase;
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protected $valeurs_en_pourcentage = array();
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protected $dom;
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protected $largeurSVG = "500";
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protected $valeurs_champs;
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public function consulter($ressources, $parametres) {
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$this->ressources = $ressources;
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$this->parametres = $parametres;
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$this->initialiserConfiguration();
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$resultats = '';
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$this->traiterRessources();
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$requete = $this->assemblerLaRequete();
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$resultat = $this->resultat = $this->Bdd->recupererTous($requete);
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$versionResultat = $this->obtenirResultat($resultat);
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return $versionResultat;
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}
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//+--------------------------initialisation de paramètres -------------------------------------------+
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private function initialiserConfiguration() {
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$conteneur = new Conteneur();
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$this->Bdd = $conteneur->getBdd();
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$this->config = $conteneur->getParametre('Graphiques');
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$this->convertisseur = $this->config['convertisseur'];
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$this->graduations_id = $this->getParametreTableau('graduations_id');
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$this->champs_ontologiques = $this->getParametreTableau('champs_ontologiques');
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$this->cheminGraphBase = $this->config['chemin'];
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$cacheOptions = array('mise_en_cache' => $this->config['cache']['miseEnCache'],
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'stockage_chemin' => $this->config['cache']['stockageChemin'],
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'duree_de_vie' => $this->config['cache']['dureeDeVie']);
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$this->cache = $conteneur->getCacheSimple($cacheOptions);
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$this->definirVersion();
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$this->definirFormat();
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$this->definirTable($this->version);
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}
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abstract function definirTable($version);
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private function getParametreTableau($cle) {
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$tableau = array();
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$parametre = Config::get($cle);
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if (empty($parametre) === false) {
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$tableauPartiel = explode(',', $parametre);
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$tableauPartiel = array_map('trim', $tableauPartiel);
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foreach ($tableauPartiel as $champ) {
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if (strpos($champ, '=') !== false && strlen($champ) >= 3) {
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list($cle, $val) = explode('=', $champ);
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$tableau[trim($cle)] = trim($val);
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} else {
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$tableau[] = trim($champ);
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}
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}
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}
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return $tableau;
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}
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//+--------------------------traitement ressources ou paramètres -------------------------------------------+
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//+---- paramètres ----+
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//on n'affiche qu'une version de graphique à la fois ( la dernière ou celle demandée )
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private function definirVersion() {
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$this->chargerVersions();
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if( (!isset($this->parametres['version.projet']) ) || ((isset($this->parametres['version.projet']) )&&
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(($this->parametres['version.projet'] == '+') || ($this->parametres['version.projet'] == '')))){
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$this->version = $this->metadonnees[0]['version'];
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} else {
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$this->version = $this->parametres['version.projet'];
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}
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}
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private function definirFormat() {
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if (isset($this->parametres['retour.format']) ){
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if (preg_match("/^[0-9]+$/", $this->parametres['retour.format'])){
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$this->largeurSVG = $this->parametres['retour.format'];
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}else {
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$erreur = "Erreur : Entrez la largeur voulue (en pixels) pour le paramètre retour.format.";
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$code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;
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throw new Exception($erreur, $code);
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}
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}
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if (!isset($this->parametres['retour']) ){
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$this->parametres['retour'] = 'image/svg+xml';
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}else {
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if (( $this->parametres['retour'] != 'image/svg+xml')&& ( $this->parametres['retour'] != 'image/png')){
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$erreur = "Erreur : choisissez le format de retour pour le paramètre retour : image/svg%2Bxml ou image/png.";
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$code = RestServeur::HTTP_CODE_MAUVAISE_REQUETE;
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throw new Exception($erreur, $code);
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}
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}
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}
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private function chargerVersions() {
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$requete = "SELECT version ".
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"FROM ".Config::get('bdd_table_meta')." ".
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"ORDER BY date_creation DESC ";
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$resultats = $this->Bdd->recupererTous($requete);
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if (!is_array($resultats) || count($resultats) <= 0) {
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$message = "Les méta-données n'ont pu être chargée pour la ressource demandée";
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$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
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throw new Exception($message, $code);
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}
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$this->metadonnees = $resultats;
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}
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//+----- ressources -----+
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public function traiterRessources() {
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$this->traiterReferentielEtNum();
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$this->traiterTypeGraphique();
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}
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abstract function traiterReferentielEtNum();
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abstract function traiterTypeGraphique();
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//+--------------------------FONCTIONS D'ASSEMBLAGE DE LA REQUETE-------------------------------------------+
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public function assemblerLaRequete() {
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$requete = ' SELECT '.$this->requete_champs.' FROM '.$this->table.' '.$this->retournerRequeteCondition();
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return $requete;
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}
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public function retournerRequeteCondition() {
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$condition = '';
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if ($this->requete_condition !== "") {
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$condition = ' WHERE '.implode(' AND ', $this->requete_condition);
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}
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return $condition;
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}
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//+-------------------------- formatage du résultat -------------------------------------------+
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public function obtenirResultat($resultat) {
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if ($resultat == ""){
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$message = 'La requête SQL formée comporte une erreur!';
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$code = RestServeur::HTTP_CODE_RESSOURCE_INTROUVABLE;
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throw new Exception($message, $code);
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}elseif ($resultat) {
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if ((count($this->ressources)) != 0) {
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delphine |
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//$Atraiter = array_filter($resultat[0],function($var){return ($var != '');});
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foreach ($resultat[0] as $champs => $valeur) {
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if ($valeur !== '') {
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$Atraiter[$champs] = $valeur;
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}
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}
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mathilde |
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if (!empty($Atraiter)) {
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$this->traiterValeursEcologiques($Atraiter);
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$svg = $this->genererSVG();
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$resultat = new ResultatService();
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$resultat->corps = ($this->parametres['retour'] == 'image/png') ? $this->convertirEnPNG($svg) : $svg;
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$resultat->mime = $this->parametres['retour'];
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} else {
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$resultat = null;
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}
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}
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} else {
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$resultat = null;
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}
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return $resultat;
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}
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//+----- modification svg -----+
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public function traiterValeursEcologiques($valeur){
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$this->valeurs_champs = $valeur;
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foreach($this->valeurs_champs as $cle => $val){
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if (preg_match("/ve_humidite_edaph/", $cle)) {
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$this->valeurs_en_pourcentage[$cle] = round($val/13,1);
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} elseif (preg_match("/ve_salinite/", $cle)) {
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$this->valeurs_en_pourcentage[$cle] = round(($val+1)/11,1);
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} else {
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$this->valeurs_en_pourcentage[$cle] = round($val/10,1);
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}
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}
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}
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public function genererSVG(){
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$svg = null;
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$this->dom = new DOMDocument('1.0', 'UTF-8');
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$this->dom->validateOnParse = true;
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$fichierSvg = $this->cheminGraphBase."".$this->nomGraphique.".svg";
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$this->dom->load($fichierSvg);
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$this->changerValeursSVG();
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$svg = $this->dom->saveXML();
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return $svg;
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}
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abstract function changerValeursSVG();
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public function recupererOntologies($valeur, $champs){
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$url = $this->ajouterHref('ontologies',$this->champs_ontologiques[$champs].':'.urlencode(urlencode($valeur)));
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$val = $this->consulterHref($url);
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return $val;
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}
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mathilde |
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public function traiterIntermediaires($valeurTexte,$champsOntologie, $champsTable){
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if (preg_match("/(?:I|i)nterm(?:é|e)diaires/", $valeurTexte )) {
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$prec = $this->recupererOntologies(($this->valeurs_champs[$champsTable]-1), $champsOntologie );
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$suiv = $this->recupererOntologies(($this->valeurs_champs[$champsTable]+1), $champsOntologie );
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$valeurTexte = "Intermédiaires entre $prec->nom et $suiv->nom ";
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}
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return $valeurTexte;
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}
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mathilde |
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/// +---- convertir png ----+
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public function convertirEnPNG($svg) {
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$png = null;
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if (isset($this->convertisseur)) {
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if ($this->convertisseur == 'imagick') {
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if (extension_loaded('imagick')) {
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$png = $this->convertirEnPNGAvecImageMagick($svg);
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} else {
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$message = "Impossible de générer l'image sur le serveur. Extension ImageMagick absente.";
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$code = RestServeur::HTTP_CODE_ERREUR;
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throw new Exception($message, $code);
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}
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} else if ($this->convertisseur == 'rsvg') {
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$png = $this->convertirEnPNGAvecRsvg($svg);
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} else {
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$message = "Le convertisseur indiqué '{$this->convertisseur}' ne fait pas partie de la liste ".
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"des convertisseurs disponibles : imagick, rsvg.";
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$code = RestServeur::HTTP_CODE_ERREUR;
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throw new Exception($message, $code);
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}
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} else {
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$message = "Veuillez indiquer le convertisseur de svg à utiliser pour le service.";
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$code = RestServeur::HTTP_CODE_ERREUR;
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throw new Exception($message, $code);
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}
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return $png;
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}
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public function convertirEnPNGAvecImageMagick($svg) {
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$convertisseur = new Imagick();
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$convertisseur->setBackgroundColor(new ImagickPixel('#F8F8F8'));
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$convertisseur->readImageBlob($svg);
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$convertisseur->setImageFormat('png32');
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$convertisseur->resizeImage($this->largeurSVG, 0 , imagick::FILTER_LANCZOS, 0, true);
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$png = $convertisseur->getImageBlob();
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$convertisseur->clear();
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$convertisseur->destroy();
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return $png;
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}
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public function convertirEnPNGAvecRsvg($svg) {
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$idFichier = $this->getIdFichier();
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$fichierPng = $this->config['cache']['stockageChemin']."".$idFichier.'.png';
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$fichierSvg = $this->config['cache']['stockageChemin']."".$idFichier.'.svg';
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file_put_contents($fichierSvg, $svg);
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$commande = "rsvg-convert $fichierSvg -b #F8F8F8 -w $this->largeurSVG -a -o $fichierPng";
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$rsvg = exec($commande);
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$this->indexerFichierPng($fichierPng);
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$png = file_get_contents($fichierPng);
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return $png;
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}
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public function indexerFichierPng($fichierPng) {
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$img = imagecreatefrompng($fichierPng);
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imagetruecolortopalette($img, false, 32);
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imagepng($img, $fichierPng, 9, PNG_ALL_FILTERS);
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}
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public function getIdFichier(){
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$idfichier = str_replace(".","-",$this->ressources[1]);
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$idfichier = str_replace(':','-',$idfichier);
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$idfichier .= "-".$this->ressources[0];
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return $idfichier;
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}
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}
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?>
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