<?php

/*----------------------------------------------------------------------------

# mod_responsivegallery - Responsive Photo Gallery for Joomla 3.x v2.8.1

# ----------------------------------------------------------------------------

# author    GraphicAholic

# copyright Copyright (C) 2011 GraphicAholic.com. All Rights Reserved.

# @license - http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL

# Websites: http://www.graphicaholic.com

# Credits: Bit Repository

# Source URL: http://www.bitrepository.com/web-programming/php/resizing-an-image.html

-----------------------------------------------------------------------------------*/



// No direct access

defined('_JEXEC') or die('Restricted access');



class rgThumbnail

{

	var $image_to_resize;

	var $new_width;

	var $new_height;

	var $ratio;

	var $save;



	function resize()

	{

		if( !file_exists( $this -> image_to_resize ) )

		{

			exit( "File " . $this -> image_to_resize . " does not exist." );

		}

		

		$info = GetImageSize( $this -> image_to_resize );

		

		if( empty( $info ) )

		{

			exit( "The file " . $this -> image_to_resize . " doesn't seem to be an image." );

		}

		

		$width = $info[ 0 ];

		$height = $info[ 1 ];

		$mime = $info[ 'mime' ];/* Keep Aspect Ratio? */

		if( $this -> ratio )

		{

			$thumb = ( $this -> new_width < $width && $this -> new_height < $height ) ? true : false;// Thumbnail

			$bigger_image = ( $this -> new_width > $width || $this -> new_height > $height ) ? true : false;// Bigger Image

			if( $thumb )

			{

				

				if( $this -> new_width >= $this -> new_height )

				{

					$x = ( $width / $this -> new_width );

					$this -> new_height = ( $height / $x );

				}

				elseif( $this -> new_height >= $this -> new_width )

				{

					$x = ( $height / $this -> new_height );

					$this -> new_width = ( $width / $x );

				}

			}

			elseif( $bigger_image )

			{

				

				if( $this -> new_width >= $width )

				{

					$x = ( $this -> new_width / $width );

					$this -> new_height = ( $height * $x );

				}

				elseif( $this -> new_height >= $height )

				{

					$x = ( $this -> new_height / $height );

					$this -> new_width = ( $width * $x );

				}

			}

		}// What sort of image?

		$type = substr( strrchr( $mime, '/' ), 1 );

		

		switch( $type )

		{

		case 'jpeg':

			$image_create_func = 'ImageCreateFromJPEG';

			$image_save_func = 'ImageJPEG';

			$new_image_ext = 'jpg';

			break;

		case 'png':

			$image_create_func = 'ImageCreateFromPNG';

			$image_save_func = 'ImagePNG';

			$new_image_ext = 'png';

			break;

		case 'bmp':

			$image_create_func = 'ImageCreateFromBMP';

			$image_save_func = 'ImageBMP';

			$new_image_ext = 'bmp';

			break;

		case 'gif':

			$image_create_func = 'ImageCreateFromGIF';

			$image_save_func = 'ImageGIF';

			$new_image_ext = 'gif';

			break;

		case 'vnd.wap.wbmp':

			$image_create_func = 'ImageCreateFromWBMP';

			$image_save_func = 'ImageWBMP';

			$new_image_ext = 'bmp';

			break;

		case 'xbm':

			$image_create_func = 'ImageCreateFromXBM';

			$image_save_func = 'ImageXBM';

			$new_image_ext = 'xbm';

			break;

			default: $image_create_func = 'ImageCreateFromJPEG';

			$image_save_func = 'ImageJPEG';

			$new_image_ext = 'jpg';

		}// New Image

		

		// $image_c = ImageCreateTrueColor( $this -> new_width, $this -> new_height );

		$new_image = $image_create_func( $this -> image_to_resize );

		// ImageCopyResampled( $image_c, $new_image, 0, 0, 0, 0, $this -> new_width, $this -> new_height, $width, $height );

		

		$process = $image_save_func( $image_c, $this->save );

		return array( 'result' => $process, 'new_file_path' => $this->save );

	}

}

?>