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+<?php
+
+// EasyGiant is a PHP framework for creating and managing dynamic content
+//
+// Copyright (C) 2009 - 2011 Antonio Gallo
+// See COPYRIGHT.txt and LICENSE.txt.
+//
+// This file is part of EasyGiant
+//
+// EasyGiant is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// EasyGiant is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with EasyGiant. If not, see <http://www.gnu.org/licenses/>.
+
+if (!defined('EG')) die('Direct access not allowed!');
+
+//class to create a thumbnail
+class Image_Gd_Thumbnail
+{
+ const DS = DIRECTORY_SEPARATOR;
+
+ private $params = array(); //parameters of the object
+ private $basePath = null; //the path of the folder inside which the images are saved
+
+ public function __construct($basePath,$params = null)
+ {
+ $finalChar = $basePath[strlen($basePath) - 1];
+ if (strcmp($finalChar,self::DS) !== 0) $basePath .= self::DS;
+
+ $this->basePath = $basePath;
+
+ $defaultParams = array(
+ 'imgWidth' => null,
+ 'imgHeight' => null,
+ 'defaultImage' => null,
+ 'cropImage' => 'no',
+ 'horizAlign' => 'left',
+ 'vertAlign' => 'top',
+ 'resample' => 'yes',
+ 'function' => 'none',
+ 'outputFormat' => 'jpeg',
+ );
+
+ //set the $this->scaffold->params array
+ if (is_array($params))
+ {
+ foreach ($params as $key => $value)
+ {
+ $defaultParams[$key] = $value;
+ }
+ }
+ $this->params = $defaultParams;
+ }
+
+ //create the thumbnail
+ //$imageName: the name of the file inside $this->basePath
+ //$outputFile: the name of the output file
+ public function render($imageFile, $outputFile = null)
+ {
+ $imagePath = $this->basePath . basename($imageFile);
+
+ if (!file_exists($imagePath) and isset($this->params['defaultImage'])) $imagePath = $this->params['defaultImage'];
+
+ $img = null;
+ $type = 'jpeg';
+ $contentType = 'image/jpeg';
+
+ if (file_exists($imagePath))
+ {
+ $ext = strtolower(end(explode('.', $imagePath)));
+
+ if (strcmp($ext,'jpg') === 0 or strcmp($ext,'jpeg') === 0) {
+ $img = @imagecreatefromjpeg($imagePath);
+ $type = 'jpeg';
+ $contentType = 'image/jpeg';
+ } else if (strcmp($ext,'png') === 0) {
+ $img = @imagecreatefrompng($imagePath);
+ $type = 'png';
+ $contentType = 'image/png';
+ } else if (strcmp($ext,'gif') === 0) {
+ $img = @imagecreatefromgif($imagePath);
+ $type = 'gif';
+ $contentType = 'image/gif';
+ }
+ }
+
+ //If an image was successfully loaded, test the image for size
+ if ($img)
+ {
+ //image size
+ $width = imagesx($img);
+ $height = imagesy($img);
+
+ if (!isset($this->params['imgWidth'])) $this->params['imgWidth'] = $width;
+ if (!isset($this->params['imgHeight'])) $this->params['imgHeight'] = $height;
+
+ if ($this->params['cropImage'] === 'no')
+ {
+ $scale = min($this->params['imgWidth']/$width, $this->params['imgHeight']/$height);
+ }
+ else if ($this->params['cropImage'] === 'yes')
+ {
+ $scale = max($this->params['imgWidth']/$width, $this->params['imgHeight']/$height);
+ }
+
+ if ($scale < 1) {
+
+ $xSrc = 0;
+ $ySrc = 0;
+
+ if ($this->params['cropImage'] === 'no')
+ {
+ $newWidth = floor($scale*$width);
+ $newHeight = floor($scale*$height);
+ }
+ else if ($this->params['cropImage'] === 'yes')
+ {
+
+ $newWidth = $this->params['imgWidth'];
+ $newHeight = $this->params['imgHeight'];
+ $oldWidth = $width;
+ $oldHeight = $height;
+ $width = floor($newWidth/$scale);
+ $height = floor($newHeight/$scale);
+
+ switch ($this->params['horizAlign'])
+ {
+ case 'left':
+ $xSrc = 0;
+ break;
+ case 'right':
+ $xSrc = floor(($oldWidth-$width));
+ break;
+ case 'center':
+ $xSrc = floor(($oldWidth-$width)/2);
+ break;
+ default:
+ $xSrc = $this->params['horizAlign'];
+ }
+
+ switch ($this->params['vertAlign'])
+ {
+ case 'top':
+ $ySrc = 0;
+ break;
+ case 'bottom':
+ $ySrc = floor(($oldHeight-$height));
+ break;
+ case 'center':
+ $ySrc = floor(($oldHeight-$height)/2);
+ break;
+ default:
+ $ySrc = $this->params['vertAlign'];
+ }
+
+ }
+
+ //temp image
+ $tmpImg = imagecreatetruecolor($newWidth, $newHeight);
+
+ if ($this->params['resample'] === 'yes')
+ {
+ //copy and resample
+ imagecopyresampled($tmpImg, $img, 0, 0, $xSrc, $ySrc,$newWidth, $newHeight, $width, $height);
+ }
+ else
+ {
+ //copy and resize
+ imagecopyresized($tmpImg, $img, 0, 0, $xSrc, $ySrc,$newWidth, $newHeight, $width, $height);
+ }
+ imagedestroy($img);
+ $img = $tmpImg;
+
+ if (!function_exists($this->params['function'])) {
+ throw new Exception('Error in <b>'.__METHOD__.'</b>: function <b>'.$this->params['function']. '</b> does not exist');
+ }
+
+ $img = call_user_func($this->params['function'],$img);
+ }
+
+ }
+
+ if (!$img)
+ {
+ $imgWidth = isset($this->params['imgWidth']) ? $this->params['imgWidth'] : 100;
+ $imgHeight = isset($this->params['imgHeight']) ? $this->params['imgHeight'] : 100;
+
+ $img = imagecreate($imgWidth, $imgHeight);
+ imagecolorallocate($img,200,200,200);
+ }
+
+ //print the image
+ if (!isset($outputFile))
+ {
+ header("Content-type: $contentType");
+ }
+
+ if (strcmp($type,'png') === 0)
+ {
+ imagepng($img,$outputFile,9);
+ }
+ else if (strcmp($type,'gif') === 0)
+ {
+ imagegif($img,$outputFile);
+ }
+ else
+ {
+ imagejpeg($img,$outputFile,90);
+ }
+ }
+
+} \ No newline at end of file