WB 2.08.x

<?php

// $Id: resize_img.php 1035 2009-07-06 22:34:35Z Ruebenwurzel $

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2009, Ryan Djurovich

 Website Baker 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 2 of the License, or

 (at your option) any later version.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

	/**

	 * Image Resizer. 

	 * @author : Harish Chauhan

	 * @copyright : Freeware

	 * About :This PHP script will resize the given image and can show on the fly or save as image file.

	 *

	 */

	define("HAR_AUTO_NAME",1);	

	Class RESIZEIMAGE

	{

		var $imgFile="";

		var $imgWidth=0;

		var $imgHeight=0;

		var $imgType="";

		var $imgAttr="";

		var $type=NULL;

		var $_img=NULL;

		var $_error="";

		/**

		 * Constructor

		 *

		 * @param [String $imgFile] Image File Name

		 * @return RESIZEIMAGE (Class Object)

		 */

		function RESIZEIMAGE($imgFile="")

		{

			if (!function_exists("imagecreate"))

			{

				$this->_error="Error: GD Library is not available.";

				return false;

			}

			$this->type=Array(1 => 'GIF', 2 => 'JPG', 3 => 'PNG', 4 => 'SWF', 5 => 'PSD', 6 => 'BMP', 7 => 'TIFF', 8 => 'TIFF', 9 => 'JPC', 10 => 'JP2', 11 => 'JPX', 12 => 'JB2', 13 => 'SWC', 14 => 'IFF', 15 => 'WBMP', 16 => 'XBM');

			if(!empty($imgFile))

				$this->setImage($imgFile);

		}

		/**

		 * Error occured while resizing the image.

		 *

		 * @return String 

		 */

		function error()

		{

			return $this->_error;

		}

		/**

		 * Set image file name

		 *

		 * @param String $imgFile

		 * @return void

		 */

		function setImage($imgFile)

		{

			$this->imgFile=$imgFile;

			return $this->_createImage();

		}

		/**

		 * 

		 * @return void

		 */

		function close()

		{

			return @imagedestroy($this->_img);

		}

		/**

		 * Resize a image to given width and height and keep it's current width and height ratio

		 * 

		 * @param Number $imgwidth

		 * @param Numnber $imgheight

		 * @param String $newfile

		 */

		function resize_limitwh($imgwidth,$imgheight,$newfile=NULL)

		{

			$image_per = 100;

			list($width, $height, $type, $attr) = @getimagesize($this->imgFile);

			if($width > $imgwidth && $imgwidth > 0)

				$image_per = (double)(($imgwidth * 100) / $width);

			if(floor(($height * $image_per)/100)>$imgheight && $imgheight > 0)

				$image_per = (double)(($imgheight * 100) / $height);

			$this->resize_percentage($image_per,$newfile);

		}

		/**

		 * Resize an image to given percentage.

		 *

		 * @param Number $percent

		 * @param String $newfile

		 * @return Boolean

		 */

		function resize_percentage($percent=100,$newfile=NULL)

		{

			$newWidth=($this->imgWidth*$percent)/100;

			$newHeight=($this->imgHeight*$percent)/100;

			return $this->resize($newWidth,$newHeight,$newfile);

		}

		/**

		 * Resize an image to given X and Y percentage.

		 *

		 * @param Number $xpercent

		 * @param Number $ypercent

		 * @param String $newfile

		 * @return Boolean

		 */

		function resize_xypercentage($xpercent=100,$ypercent=100,$newfile=NULL)

		{

			$newWidth=($this->imgWidth*$xpercent)/100;

			$newHeight=($this->imgHeight*$ypercent)/100;

			return $this->resize($newWidth,$newHeight,$newfile);

		}

		/**

		 * Resize an image to given width and height

		 *

		 * @param Number $width

		 * @param Number $height

		 * @param String $newfile

		 * @return Boolean

		 */

		function resize($width,$height,$newfile=NULL)

		{

			if(empty($this->imgFile))

			{

				$this->_error="File name is not initialised.";

				return false;

			}

			if($this->imgWidth<=0 || $this->imgHeight<=0)

			{

				$this->_error="Could not resize given image";

				return false;

			}

			if($width<=0)

				$width=$this->imgWidth;

			if($height<=0)

				$height=$this->imgHeight;

			return $this->_resize($width,$height,$newfile);

		}

		/**

		 * Get the image attributes

		 * @access Private

		 * 		

		 */

		function _getImageInfo()

		{

			@list($this->imgWidth,$this->imgHeight,$type,$this->imgAttr)=@getimagesize($this->imgFile);

			$this->imgType=$this->type[$type];

		}

		/**

		 * Create the image resource 

		 * @access Private

		 * @return Boolean

		 */

		function _createImage()

		{

			$this->_getImageInfo($this->imgFile);

			if($this->imgType=='GIF')

			{

				$this->_img=@imagecreatefromgif($this->imgFile);

			}

			elseif($this->imgType=='JPG')

			{

				$this->_img=@imagecreatefromjpeg($this->imgFile);

			}

			elseif($this->imgType=='PNG')

			{

				$this->_img=@imagecreatefrompng($this->imgFile);

			}			

			if(!$this->_img || !@is_resource($this->_img))

			{

				$this->_error="Error loading ".$this->imgFile;

				return false;

			}

			return true;

		}

		/**

		 * Function is used to resize the image

		 * 

		 * @access Private

		 * @param Number $width

		 * @param Number $height

		 * @param String $newfile

		 * @return Boolean

		 */

		function _resize($width,$height,$newfile=NULL)

		{

			if (!function_exists("imagecreate"))

			{

				$this->_error="Error: GD Library is not available.";

				return false;

			}

			$newimg=@imagecreatetruecolor($width,$height);

			//imagecolortransparent( $newimg, imagecolorat( $newimg, 0, 0 ) );

			if($this->imgType=='GIF' || $this->imgType=='PNG')

			{

				/** Code to keep transparency of image **/

				$colorcount = imagecolorstotal($this->_img);

				if ($colorcount == 0) $colorcount = 256;

				imagetruecolortopalette($newimg,true,$colorcount);

				imagepalettecopy($newimg,$this->_img);

				$transparentcolor = imagecolortransparent($this->_img);

				imagefill($newimg,0,0,$transparentcolor);

				imagecolortransparent($newimg,$transparentcolor); 

			}

			@imagecopyresampled ( $newimg, $this->_img, 0,0,0,0, $width, $height, $this->imgWidth,$this->imgHeight);

			if($newfile===HAR_AUTO_NAME)

			{

				if(@preg_match("/\..*+$/",@basename($this->imgFile),$matches))

			   		$newfile=@substr_replace($this->imgFile,"_har",-@strlen($matches[0]),0);			

			}

			elseif(!empty($newfile))

			{

				if(!@preg_match("/\..*+$/",@basename($newfile)))

				{

					if(@preg_match("/\..*+$/",@basename($this->imgFile),$matches))

					   $newfile=$newfile.$matches[0];

				}

			}

			if($this->imgType=='GIF')

			{

				if(!empty($newfile))

					@imagegif($newimg,$newfile);

				else

				{

					@header("Content-type: image/gif");

					@imagegif($newimg);

				}

			}

			elseif($this->imgType=='JPG')

			{

				if(!empty($newfile))

					@imagejpeg($newimg,$newfile,85);

				else

				{

					@header("Content-type: image/jpeg");

					@imagejpeg($newimg);

				}

			}

			elseif($this->imgType=='PNG')

			{

				if(!empty($newfile))

					@imagepng($newimg,$newfile);

				else

				{

					@header("Content-type: image/png");

					@imagepng($newimg);

				}

			}

			@imagedestroy($newimg);

		}

	}

?>