CONTENIDO Forum

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<?
/***********************************************
* CONTENIDO MODUL - OUTPUT
*
* Modulname   :	    w3concepts.gallery.v1
* Author      :     Andreas Kummer
* Copyright   :     mumprecht & kummer w3concepts
* Created     :     30-08-2004
* Modified    :     30-08-2004
************************************************/

class gallery {

	function gallery() {
		// initialwerte setzen
		$this->setInitValues();

		// aussteigen, falls initialwerte nicht sinnvoll
		if (!$this->checkInitValues()) return false;

		// quellverzeichnis auslesen
		$this->readDir();

		// zeiger für showNextPicture setzen
		if (empty($_REQUEST['pos'])) {
			$this->showNextPictureSeq = -1;
		} else {
			$this->showNextPictureSeq = $_REQUEST['pos'] - 1;
		}

		// datenbankzugriff initialisieren
		$this->db = new DB_Contenido;

		// galerie ausgeben
		$this->showGallery();

		// gegebenenfalls navigation ausgeben
		$this->showNavigation();

	}

	function setInitValues() {
		// konfigurationswerte aus dem input-script
		// übernehmen
		$this->path['pictures'] = "CMS_VALUE[0]";
		$this->path['thumbs'] = "CMS_VALUE[1]";
		$this->path['upload'] = $GLOBALS['cfgClient']["{$GLOBALS['client']}"]['upload'];
		$this->path['html'] = $GLOBALS['cfgClient']["{$GLOBALS['client']}"]['path']['htmlpath'];
		$this->abspath['pictures'] = $GLOBALS['cfgClient']["{$GLOBALS['client']}"]['path']['frontend'].$GLOBALS['cfgClient']["{$GLOBALS['client']}"]['upload'].$this->path['pictures'];
		$this->abspath['thumbs'] = $GLOBALS['cfgClient']["{$GLOBALS['client']}"]['path']['frontend'].$GLOBALS['cfgClient']["{$GLOBALS['client']}"]['upload'].$this->path['thumbs'];
		$this->htmlpath = $GLOBALS['cfgClient']["{$GLOBALS['client']}"]['path']['htmlpath'].$GLOBALS['cfgClient']["{$GLOBALS['client']}"]['upload'];
		$this->thumbnailSize['width'] = "CMS_VALUE[2]";
		$this->thumbnailSize['height'] = "CMS_VALUE[3]";
		$this->tableSize['cols'] = "CMS_VALUE[4]";
		$this->tableSize['rows'] = "CMS_VALUE[5]";
		$this->link['previous'] = "CMS_VALUE[6]";
		$this->link['next'] = "CMS_VALUE[7]";
	}

	function checkInitValues() {
		// prüfen, ob es sich bei den übergebenen pfaden
		// um tatsächlich vorhandene pfade im dateisystem
		// handelt. gegebenenfalls wird eine ausgabe
		// an den browser vorgenommen und false zurückgegeben.
		if (!chdir($this->abspath['pictures'])) {
			echo "<p>Das Verzeichnis '{$this->abspath['pictures']}' existiert im Dateisystem
				des Servers nicht. Entweder müssen Sie es noch anlegen oder die
				Konfiguration Ihres Modules anpassen.</p>";
			return false;
		}
		if (!chdir($this->abspath['thumbs'])) {
			echo "<p>Das Verzeichnis '{$this->abspath['thumbs']}' existiert im Dateisystem
				des Servers nicht. Entweder müssen Sie es noch anlegen oder die
				Konfiguration Ihres Modules anpassen.</p>";
			return false;			
		}

		if ($this->thumbnailSize['width'] == '') $this->thumbnailSize['width'] = 100;
		if ($this->thumbnailSize['height'] == '') $this->thumbnailSize['height'] = 100;

		if ($this->tableSize['cols'] == '') $this->tableSize['cols'] = 3;
		if ($this->tableSize['rows'] == '') $this->tableSize['rows'] = 3;

		if ($this->link['previous'] == '') $this->link['previous'] = '[:: rückwärts ]';
		if ($this->link['next'] == '') $this->link['next'] = '[ vorwärts ::]';


		// rückgabe im erfolgsfall
		return true;
	}

	function readDir() {
		$dir = opendir($this->abspath['pictures']);
		while ($file = readdir($dir)) {
			$bildinfo = @getimagesize($this->abspath['pictures'].$file);
			if (!empty($bildinfo)) { 
				$picture[] = $file;
			}
		}
		rsort($picture);
		closedir($dir);

		foreach ($picture as $picture2) {
			if (!empty($picture2)) $this->picture[] = $picture2;
		}
	}

	function showNextPicture() {
		// zeiger um eins erhöhen
		$this->showNextPictureSeq++;

		// wenn keine bild mehr vorhanden ist, false zurück geben
		if ($this->showNextPictureSeq >= count($this->picture)) return '';

		// thumbnail generieren falls erforderlich
		$size = $this->generateThumb($this->picture["{$this->showNextPictureSeq}"]);

		// originalgrösse des bildes ermitteln
		$originalsize = getimagesize($this->abspath['pictures'].$this->picture["{$this->showNextPictureSeq}"]);

		// referenz zurück geben
		//return "<a href=\"#\" onClick=\"window.open('{$this->path['html']}popupviewer.php?uri={$this->path['upload']}{$this->path['pictures']}{$this->picture[$this->showNextPictureSeq]}','bild','width={$originalsize[0]},height={$originalsize[1]},top=10,left=10,scrollbars=no,topmargin=0,leftmargin=0');bild.document.body.style.margin=0;\"><img src=\"{$this->htmlpath}{$size['filename']}\" width=\"{$size['width']}\" height=\"{$size['height']}\" /></a>";
		return "<a href=\"javascript:window.open('{$this->path['html']}popupviewer.php?uri={$this->path['upload']}{$this->path['pictures']}{$this->picture[$this->showNextPictureSeq]}','bild','width={$originalsize[0]},height={$originalsize[1]},top=10,left=10,scrollbars=no,topmargin=0,leftmargin=0');bild.document.body.style.margin=0;\"><img src=\"{$this->htmlpath}{$size['filename']}\" width=\"{$size['width']}\" height=\"{$size['height']}\" /></a>";
	}

	function generateThumb($filename) {

		$src_image_size = getimagesize($this->abspath['pictures'].$filename);

		// prüfen, ob thumbnail bereits vorhanden ist
		if (!file_exists("{$this->abspath['thumbs']}{$this->thumbnailSize['width']}.{$this->thumbnailSize['height']}.$filename.jpg")) {

			// ermitteln ob das bild auf bestimmte höhe oder bestimmte breite zu reduzieren ist
			// sowie ermitteln, um welchen faktor das bild zu verkleinern ist
			if ($src_image_size[0]/$src_image_size[1] > $this->thumbnailSize['width']/$this->thumbnailSize['height']) {
				$verkleinerungsfaktor = $this->thumbnailSize['width']/$src_image_size[0];
			} else {
				$verkleinerungsfaktor = $this->thumbnailSize['height']/$src_image_size[1];
			}

			// berechnen der thumbnailgrösse
			$bildhoehe = round($src_image_size[1] * $verkleinerungsfaktor);
			$bildbreite = round($src_image_size[0] * $verkleinerungsfaktor);

			// thumbnail erstellen
			$dst_im = imagecreatetruecolor($bildbreite,$bildhoehe);
			if ($src_image_size[2] == 1) {
				$src_im = imagecreatefromGIF("{$this->abspath['pictures']}$filename");
			} elseif ($src_image_size[2] == 2) {
				$src_im = @ImageCreateFromJPEG("{$this->abspath['pictures']}$filename");
			} else {
				$src_im = @imagecreatefromgd("{$this->abspath['pictures']}$filename");
			}
			imagecopyresampled ($dst_im,$src_im,0,0,0,0,$bildbreite,$bildhoehe,$src_image_size[0],$src_image_size[1]);
			imagejpeg ($dst_im,"{$this->abspath['thumbs']}{$this->thumbnailSize['width']}.{$this->thumbnailSize['height']}.$filename.jpg",100);
			
			$size['width'] = $bildbreite;
			$size['height'] = $bildhoehe;
		} else {
			$thumbnailsize = getimagesize("{$this->abspath['thumbs']}{$this->thumbnailSize['width']}.{$this->thumbnailSize['height']}.$filename.jpg");
			$size['width'] = $thumbnailsize[0];
			$size['height'] = $thumbnailsize[1];
		}

		$size['filename'] = "{$this->path['thumbs']}{$this->thumbnailSize['width']}.{$this->thumbnailSize['height']}.$filename.jpg";
	
		return $size;
	}

	function getDescription() {
		
		$sql = "SELECT description FROM {$GLOBALS['cfg']['tab']['upl']}
			WHERE
				filename = '{$this->picture[$this->showNextPictureSeq]}'
				AND dirname = '{$this->path['pictures']}'
			";

		$this->db->query($sql);
		$this->db->next_record();

		return $this->db->f("description");;
	}

	function showGallery() {

		$cellwidth = floor(100/$this->tableSize['cols']);
		echo "<table width=\"100%\">\n";
		for ($i = 0;$i < $this->tableSize['rows'];$i++) {
			$beschreibung = null;

			echo "<tr>\n";			
			for ($j = 0;$j < $this->tableSize['cols'];$j++) {
				echo "<td align=\"left\" valign=\"top\" width=\"$cellwidth%\">\n".$this->showNextPicture()."\n</td>\n";
				$beschreibung[] = $this->getDescription();
			}
			echo "</tr>\n";

			echo "<tr>\n";
			for ($j = 0;$j < $this->tableSize['cols'];$j++) {
				echo "<td align=\"left\" valign=\"top\" width=\"$cellwidth%\" style=\"padding-bottom:10px; font-style: italic;\">\n{$beschreibung[$j]}\n</td>\n";
			}
			echo "</tr>\n";
		}
		echo "</table>\n";
	}

	function showNavigation() {

		if ($this->tableSize['cols'] * $this->tableSize['rows'] < count($this->picture)) {
			echo "<table width=\"100%\">\n<tr>\n";

			if (!empty($_REQUEST['pos'])) {
				$pos = ($this->showNextPictureSeq <= $this->tableSize['cols'] * $this->tableSize['rows']) ? (0) : ($this->showNextPictureSeq - (2 * $this->tableSize['cols'] * $this->tableSize['rows']) + 1);
				$pos = ($pos < 0) ? (0) : ($pos);
				$link = $GLOBALS['sess']->url("front_content.php?client={$GLOBALS['client']}&lang={$GLOBALS['lang']}&idcat={$GLOBALS['idcat']}&idart={$GLOBALS['idart']}&pos=$pos");
				echo "<td style=\"text-align:left; width:33%\"><a href=\"$link\">{$this->link['previous']}</a></td>";
			} else {
				echo "<td style=\"text-align:left; width:33%\">&nbsp;</td>";
			}

			echo "<td align=\"center\" width=\"33%\">&nbsp;</td>";

			if ($this->showNextPictureSeq + 1 < count($this->picture)) {
				$pos = $this->showNextPictureSeq + 1;
				$link = $GLOBALS['sess']->url("front_content.php?client={$GLOBALS['client']}&lang={$GLOBALS['lang']}&idcat={$GLOBALS['idcat']}&idart={$GLOBALS['idart']}&pos=$pos");
				echo "<td style=\"text-align:right; width:33%\"><a href=\"$link\">{$this->link['next']}</a></td>";
			} else {
				echo "<td style=\"text-align:right; width:33%\">&nbsp;</td>";
			}

			echo "</tr>\n</table>\n";
		}
	}

}

$gallery = new gallery();
?>