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Diffstat (limited to 'admin/Library/Image/Gd/Thumbnail.php')
| -rw-r--r-- | admin/Library/Image/Gd/Thumbnail.php | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/admin/Library/Image/Gd/Thumbnail.php b/admin/Library/Image/Gd/Thumbnail.php new file mode 100644 index 0000000..5981175 --- /dev/null +++ b/admin/Library/Image/Gd/Thumbnail.php @@ -0,0 +1,151 @@ +<?php + +// All EasyGiant code 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. +// See COPYRIGHT.txt and LICENSE.txt. + +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' => 100, + 'imgHeight' => 100, + 'defaultImage' => null, + 'cropImage' => 'no', + 'horizAlign' => 'left', + 'vertAlign' => 'top' + ); + + //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 $this->basePath + public function render($imageFile) + { + $imagePath = $this->basePath . basename($imageFile); + + if (!file_exists($imagePath) and isset($this->params['defaultImage'])) $imagePath = $this->params['defaultImage']; + + $img = null; + $ext = strtolower(end(explode('.', $imagePath))); + + if (strcmp($ext,'jpg') === 0 or strcmp($ext,'jpeg') === 0) { + $img = @imagecreatefromjpeg($imagePath); + } else if (strcmp($ext,'png') === 0) { + $img = @imagecreatefrompng($imagePath); + } else if (strcmp($ext,'gif') === 0) { + $img = @imagecreatefromgif($imagePath); + } + + //If an image was successfully loaded, test the image for size + if ($img) { + //image size + $width = imagesx($img); + $height = imagesy($img); + + 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, $newHeight); + + //copy and resize + imagecopyresized($tmpImg, $img, 0, 0, $xSrc, $ySrc,$newWidth, $newHeight, $width, $height); + imagedestroy($img); + $img = $tmpImg; + } + + } + + if (!$img) { + $img = imagecreate($this->params['imgWidth'], $this->params['imgHeight']); + imagecolorallocate($img,200,200,200); + } + + //print the image + header("Content-type: image/jpeg"); + imagejpeg($img); + + } + +}
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