<?php

/**
 * @package 	helpers
 * @version		1.4
 * @created		Dec 2011
 * @author		BowThemes
 * @email		support@bowthems.com
 * @website		http://bowthemes.com
 * @support		Forum - http://bowthemes.com/forum/
 * @copyright	Copyright (C) 2012 Bowthemes. All rights reserved.
 * @license		http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 *
 */

// No direct access
defined('_JEXEC') or die;

jimport( 'joomla.filesystem.file' );

if(!class_exists('BTImageHelper'))
{
	class BTImageHelper extends JObject {
		static function getImageCreateFunction($type) {
			switch ($type) {
				case 'jpeg':
				case 'jpg':
					$imageCreateFunc = 'imagecreatefromjpeg';
					break;
				 
				case 'png':
					$imageCreateFunc = 'imagecreatefrompng';
					break;
				 
				case 'bmp':
					$imageCreateFunc = 'imagecreatefrombmp';
					break;
				 
				case 'gif':
					$imageCreateFunc = 'imagecreatefromgif';
					break;
				 
				case 'vnd.wap.wbmp':
					$imageCreateFunc = 'imagecreatefromwbmp';
					break;
				 
				case 'xbm':
					$imageCreateFunc = 'imagecreatefromxbm';
					break;
				 
				default:
					$imageCreateFunc = 'imagecreatefromjpeg';
			}
			
			return $imageCreateFunc;
		}
		
		static function getImageSaveFunction($type) {
			switch ($type) {
				case 'jpeg':
					$imageSaveFunc = 'imagejpeg';
					break;
				 
				case 'png':
					$imageSaveFunc = 'imagepng';
					break;
				 
				case 'bmp':
					$imageSaveFunc = 'imagebmp';
					break;
				 
				case 'gif':
					$imageSaveFunc = 'imagegif';
					break;
				 
				case 'vnd.wap.wbmp':
					$imageSaveFunc = 'imagewbmp';
					break;
				 
				case 'xbm':
					$imageSaveFunc = 'imagexbm';
					break;
				 
				default:
					$imageSaveFunc = 'imagejpeg';
			}
			
			return $imageSaveFunc;
		}
		
		static function resize($imgSrc, $imgDest, $dWidth, $dHeight, $crop = true, $quality = 100) {
			$info = getimagesize($imgSrc, $imageinfo);
			$sWidth = $info[0];
			$sHeight = $info[1];
			if(!$sWidth){
				return;
			}
			if ($sHeight / $sWidth > $dHeight / $dWidth) {
				$width = $sWidth;
				$height = round(($dHeight * $sWidth) / $dWidth);
				$sx = 0;
				$sy = round(($sHeight - $height) / 3);
			}
			else {
				$height = $sHeight;
				$width = round(($sHeight * $dWidth) / $dHeight);
				$sx = round(($sWidth - $width) / 2);
				$sy = 0;
			}
			
			if (!$crop) {
				$sx = 0;
				$sy = 0;
				$width = $sWidth;
				$height = $sHeight;
			}
			
			//echo "$sx:$sy:$width:$height";die();
			
			$ext = str_replace('image/', '', $info['mime']);
			$imageCreateFunc = self::getImageCreateFunction($ext);
			$imageSaveFunc = self::getImageSaveFunction(JFile::getExt($imgDest));
			
			$sImage = $imageCreateFunc($imgSrc);
			$dImage = imagecreatetruecolor($dWidth, $dHeight);
			
			// Make transparent
			if ($ext == 'png') {
				imagealphablending($dImage, false);
				imagesavealpha($dImage,true);
				$transparent = imagecolorallocatealpha($dImage, 255, 255, 255, 127);
				imagefilledrectangle($dImage, 0, 0, $dWidth, $dHeight, $transparent);
			}
			
			imagecopyresampled($dImage, $sImage, 0, 0, $sx, $sy, $dWidth, $dHeight, $width, $height);
			
			
			// Initialise variables.
			$FTPOptions = JClientHelper::getCredentials('ftp');
			if ($FTPOptions['enabled'] == 1)
			{
				// Connect the FTP client
				jimport('joomla.client.ftp');
				$ftp = JFTP::getInstance($FTPOptions['host'], $FTPOptions['port'], array(), $FTPOptions['user'], $FTPOptions['pass']);				
				ob_start();
				if ($ext == 'png') {
					$imageSaveFunc($dImage, null, 9);
				}
				else if ($ext == 'gif'){
					$imageSaveFunc($dImage, null);
				}
				else {
					$imageSaveFunc($dImage, null, $quality);
				}
				$buffer = ob_get_contents();
				ob_end_clean();
				// Translate path for the FTP account and use FTP write buffer to file
				$imgDest = JPath::clean(str_replace(JPATH_ROOT, $FTPOptions['root'], $imgDest), '/');
				$ret = $ftp->write($imgDest, $buffer);
				//$ftp->chmode($imgDest,0755);
			}
			else
			{
				if ($ext == 'png') {
					$imageSaveFunc($dImage, $imgDest, 9);
				}
				else if ($ext == 'gif') {
					$imageSaveFunc($dImage, $imgDest);
				}
				else {
					$imageSaveFunc($dImage, $imgDest, $quality);
				}
			}

			
			
		}
		static function createImage($imgSrc, $imgDest, $width, $height, $crop = true, $quality = 100) {
			if (JFile::exists($imgDest)) {
				$info = getimagesize($imgDest, $imageinfo);
				// Image is created
				if (($info[0] == $width) && ($info[1] == $height)) {
					return;
				}
			}
			self::resize($imgSrc, $imgDest, $width, $height, $crop, $quality);
		}
	}
}
?>