/components/com_tuiyo/libraries/tuiyo/filesystem/image.php

<?php

/**

 * ******************************************************************

 * Image object for the Tuiyo platform                               *

 * ******************************************************************

 * @copyright : 2008 tuiyo Platform                                 *

 * @license   : http://platform.tuiyo.com/license   BSD License     * 

 * @version   : Release: $Id$                                       * 

 * @link      : http://platform.tuiyo.com/                          * 

 * @author 	  : livingstone[at]drstonyhills[dot]com                 * 

 * @access 	  : Public                                              *

 * @since     : 1.0.0 alpha                                         *   

 * @package   : tuiyo                                               *

 * ******************************************************************

 */



defined('TUIYO_EXECUTE') || die;



jimport('joomla.filesystem.file');

jimport('joomla.filesystem.folder');

jimport('joomla.filesystem.path');



/**

 * TuiyoImages

 * @package tuiyo

 * @author Livingstone Fultang

 * @copyright 2009

 * @version $Id$

 * @access public

 */

class TuiyoImage

{



    /**

     * TuiyoImage::TuiyoImage()

     * @param mixed $imgSrc

     * @param mixed $imgWidth

     * @param mixed $imgHieght

     * @param integer $Quality

     * @return void

     */

    public function TuiyoImage($imgSrc, $imgWidth, $imgHieght, $imgQuality = 85)

    {



        $imgType = JFile::getExt(basename($imgSrc));

        $imgErr = TUIYO_FILES . DS . 'noimage.jpg';

        //Image Parameters

        list($width, $height) = getimagesize($imgSrc);



        if ($width > $imgWidth || $height > $imgHieght) {

            if ((int)$imgWidth <> (int)$imgHieght) {

                $ratio = ($width > $height) ? $imgWidth / $width : $imgHieght / $height;

                $newWidth = $width * $ratio;

                $newHeight = $height * $ratio;

            } else {

                $tWidth = $imgWidth;

                $tHeight = $imgHeight;

                $imgdata = getimagesize($imgSrc);

                $widthOrig = $imgdata[0];

                $heightOrig = $imgdata[1];



                //Make Square

                if ($widthOrig < $heightOrig) {

                    $newHeight = ($tWidth / $widthOrig) * $heightOrig;

                } else {

                    $newWidth = ($tHeight / $heightOrig) * $widthOrig;

                }

                //Adjust width

                if ($newWidth < $tWidth) {

                    $newWidth = $tWidth;

                    $newHeight = ($tWidth / $widthOrig) * $heightOrig;

                }

                if ($newHeight < $tHeight) {

                    $newHeight = $tHeight;

                    $newWidth = ($tHeight / $heightOrig) * $widthOrig;

                }

                //$imgSrc = $imageR1;

            }

        } else {

            list($width, $height) = getimagesize($imgSrc);



            $ratio = ($width > $height) ? $imgWidth / $width : $imgHieght / $height;

            $newWidth = $imgWidth;

            $newHeight = ($imgWidth / $width) * $height;



        }



        //Type based

        switch ($imgType):

                //PNG

            case "png":

                header('Content-type: image/png');

                $imageX = imagecreatetruecolor($newWidth, $newHeight);

                $image = imagecreatefrompng($imgSrc);

                if ($width > $height) {

                    $w1 = ($width - $height) / 2;

                    $w1 = ceil($w1);

                    $h1 = 0;

                } else

                    if ($height > $width) {

                        $w1 = 0;

                        $h1 = ($height - $width) / 2;

                        $h1 = ceil($h1);

                    }

                imagecopyresampled($imageX, $image, 0, 0, $w1, $h1, $newWidth, $newHeight, $width,

                    $height);

                imagepng($imageX, null, $imgQuality);

                imagedestroy($imageX);

                break;

                //JPEG

            case "jpg":

            case "jpeg":

                header('Content-type: image/jpeg');

                $image = imagecreatefromjpeg($imgSrc);



                $imageX = imagecreatetruecolor($imgWidth, $imgHieght);



                if ($width > $height) {

                    $w1 = ($width - $height) / 2;

                    $w1 = ceil($w1);

                    $h1 = 0;

                } else

                    if ($height > $width) {

                        $w1 = 0;

                        $h1 = ($height - $width) / 2;

                        $h1 = ceil($h1);

                    }



                //exit(0);

                imagecopyresampled($imageX, $image, 0, 0, $w1, $h1, $imgWidth, $imgHieght, $imgWidth,

                    $imgHieght);

                imagejpeg($imageX, null, $imgQuality);

                imagedestroy($imageX);



                break;

                //GIF

            case "gif":

                header('Content-type: image/gif');

                $imageX = imagecreatetruecolor($newWidth, $newHeight);

                $image = imagecreatefromgif($imgSrc);

                if ($width > $height) {

                    $w1 = ($width - $height) / 2;

                    $w1 = ceil($w1);

                    $h1 = 0;

                } else

                    if ($height > $width) {

                        $w1 = 0;

                        $h1 = ($height - $width) / 2;

                        $h1 = ceil($h1);

                    }

                imagecopyresampled($imageX, $image, 0, 0, $w1, $h1, $newWidth, $newHeight, $width,

                    $height);

                imagegif($imageX, null, $imgQuality);

                imagedestroy($imageX);

                break;

        endswitch;



        exit(0);

    }



    /**

     * TuiyoImage::getInstance()

     * @param bool  $ifNotExist

     * @param array $params

     * @return

     */

    public function getInstance($params = array(), $ifNotExist = true)

    {

        /** Creates new instance if none already exists ***/

        static $instance = array();



        if (isset($instance[$params["s"]]) && !empty($instance[$params["s"]]) && $ifNotExist) {

            if (is_object($instance)) {

                return $instance[$params["s"]];

            } else {

                unset($instance[$params["s"]]);

                TuiyoImage::getInstance($ifNotExist, $params);

            }

        } else {

            $args = array("source" => (isset($params["s"])) ? $params["s"] : "", "width" =>

                (isset($params["h"])) ? $params["h"] : "", "height" => (isset($params["w"])) ? $params["w"] :

                "", "quality" => (isset($params["q"])) ? $params["q"] : 85, );

            $instance[$params["s"]] = new TuiyoImage($args["source"], $args["width"], $args["height"],

                $args["quality"]);

        }

        return $instance[$params["s"]];

    }

}