/firstrend/src/core/class/image.class.php

<?php

// +----------------------------------------------------------------------

// | ?????????? (Build on ThinkPHP)

// +----------------------------------------------------------------------

// | Copyright (c) 2011 http://fanwe.com All rights reserved.

// +----------------------------------------------------------------------



/**

 * image.class.php

 *

 * ?????

 *

 * @package class

 * @author awfigq <awfigq@qq.com>

 */

class Image

{

	/**

	 * ????

	 */

	var $file = array();

	/**

	 * ????

	 */

	var $dir = 'public';

	/**

	 * ????

	 */

	var $error_code = 0;

	/**

	 * ??????KB

	 */

	var $max_size = 2048;



	function Image()

	{

		

	}



	/**

	 * ??????

	 * @param array $file ?????

	 * @param string $dir ?????

	 * @return bool

	 */

	function init($file, $dir = 'temp')

	{

		if(!is_array($file) || empty($file) || !$this->isUploadFile($file['tmp_name']) || trim($file['name']) == '' || $file['size'] == 0)

		{

			$this->file = array();

			$this->error_code = -1;

			return false;

		}

		else

		{

			$file['size'] = intval($file['size']);

			$file['name'] =  trim($file['name']);

			$file['thumb'] = '';

			$file['ext'] = $this->fileExt($file['name']);

			$file['name'] =  htmlspecialchars($file['name'], ENT_QUOTES);

			$file['is_image'] = $this->isImageExt($file['ext']);

			$file['is_convert'] = false;



			$info = $this->getImageInfo($file['tmp_name']);

			if($info['type'] != 'jpg' && $info['type'] != 'jpeg')

			{

				$file['ext'] = $ext;

				$file['is_convert'] = true;

			}

			

			$file['file_dir'] = $this->getTargetDir($dir);

			$file['prefix'] = md5(microtime(true)).random('6');

			$file['target'] = $file['file_dir'].'/'.$file['prefix'].'.jpg';

			$file['local_target'] = FANWE_ROOT.$file['target'];

			$this->file = &$file;

			$this->error_code = 0;

			return true;

		}

	}



	/**

	 * ????

	 * @return bool

	 */

	function save()

	{

		if(empty($this->file) || empty($this->file['tmp_name']))

			$this->error_code = -101;

		elseif(!$this->file['is_image'])

			$this->error_code = -102;

		elseif(!$this->saveFile($this->file['tmp_name'], $this->file['local_target'],$this->file['is_convert']))

			$this->error_code = -103;

		elseif($this->file['is_image'] && (!$this->file['image_info'] = $this->getImageInfo($this->file['local_target'], true)))

		{

			$this->error_code = -104;

			@unlink($this->file['local_target']);

		}

		else

		{

			$this->error_code = 0;

			return true;

		}

		return false;

	}



	/**

	 * ??????

	 * @return number

	 */

	function error()

	{

		return $this->error_code;

	}



	/**

	 * ???????

	 * @return string

	 */

	function fileExt($file_name)

	{

		return addslashes(strtolower(substr(strrchr($file_name, '.'), 1, 10)));

	}



	/**

	 * ??????????????

	 * @param string $ext ???

	 * @return bool

	 */

	function isImageExt($ext)

	{

		static $img_ext  = array('jpg', 'jpeg', 'png', 'bmp','gif','giff');

		return in_array($ext, $img_ext) ? 1 : 0;

	}



	/**

	 * ??????

	 * @param string $target ????

	 * @return mixed

	 */

	function getImageInfo($target)

	{

		static $infos = array();

		if(!isset($infos[$target]))

		{

			$infos[$target] = false;

			$ext = Image::fileExt($target);

			$is_image = Image::isImageExt($ext);



			if(!$is_image && $ext != 'tmp')

				return false;

			elseif(!is_readable($target))

				return false;

			elseif($image_info = @getimagesize($target))

			{

				$file_size = floatval(@filesize($target));

				$file_size = $file_size / 1024;

				if($file_size > $this->max_size)

					return false;

				

				list($width, $height, $type) = !empty($image_info) ? $image_info : array('', '', '');

				if($is_image && !in_array($type, array(1,2,3,6,13)))

					return false;



				$image_info['type'] = strtolower(substr(image_type_to_extension($image_info[2]),1));

				$infos[$target] = $image_info;

				return $image_info;

			}

			else

				return false;

		}

		return $infos[$target];

	}



	/**

	 * ??????????

	 * @param string $source ????

	 * @return bool

	 */

	function isUploadFile($source)

	{

		return $source && ($source != 'none') && (is_uploaded_file($source) || is_uploaded_file(str_replace('\\\\', '\\', $source)));

	}



	/**

	 * ???????

	 * @param string $dir ???????

	 * @return string

	 */

	function getTargetDir($dir)

	{

		if($dir == 'temp')

			$dir = './public/upload/temp/'.fToDate(NULL,'Y/m/d/H');

		else

			$dir = './public/upload/'.$dir.'/'.fToDate(NULL,'Y/m/d');



		makeDir(FANWE_ROOT.$dir);

		return $dir;

	}



	/**

	 * ????

	 * @param string $source ?????

	 * @param string $target ??????

	 * @return bool

	 */

	private function saveFile($source, $target,$is_convert = false)

	{

		if(!Image::isUploadFile($source))

			$succeed = false;

		elseif($is_convert && $this->convertType($source,$target))

			$succeed = true;

		elseif(@copy($source, $target))

			$succeed = true;

		elseif(function_exists('move_uploaded_file') && @move_uploaded_file($source, $target))

			$succeed = true;

		elseif (@is_readable($source) && (@$fp_s = fopen($source, 'rb')) && (@$fp_t = fopen($target, 'wb')))

		{

			while (!feof($fp_s))

			{

				$s = @fread($fp_s, 1024 * 512);

				@fwrite($fp_t, $s);

			}

			fclose($fp_s);

			fclose($fp_t);

			$succeed = true;

		}



		if($succeed)

		{

			$this->error_code = 0;

			@chmod($target, 0644);

			@unlink($source);

		}

		else

		{

			$this->error_code = 0;

		}



		return $succeed;

	}



	public function convertType($source,$target)

	{

		$info  = Image::getImageInfo($source);

        if($info !== false)

		{

			$width  = $info[0];

            $height = $info[1];

			$type = $info['type'];



			// ????

			$createFun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type);

			if(!function_exists($createFun))

				$createFun = 'imagecreatefromjpeg';

			$srcImg = $createFun($source);



			if('gif'==$type || 'png'==$type)

				imagecolorallocate($srcImg,255,255,255);

			

			// ?jpeg????????

			if('jpg'==$type || 'jpeg'==$type)

				imageinterlace($srcImg,1);



			if($source == $target)

				@unlink($source);



			// ????

			imagefilter($srcImg, IMG_FILTER_CONTRAST,-2);

			imagejpeg($srcImg,$target,IMAGE_CREATE_QUALITY);

			imagedestroy($srcImg);

			return true;

		}

		return false;

	}



	public function thumb($image,$maxWidth=200,$maxHeight=50,$gen = 0,$interlace=true,$filepath = '')

    {

        $info  = Image::getImageInfo($image);

        if($info !== false)

		{

            $srcWidth  = $info[0];

            $srcHeight = $info[1];

			$type = $info['type'];



            $interlace  =  $interlace? 1:0;

            unset($info);



			if($maxWidth > 0 && $maxHeight > 0)

			{

				//$scale = min($maxWidth/$srcWidth, $maxHeight/$srcHeight); // ??????

				//???????

				$scale = $maxWidth/$srcWidth;

			}

			elseif($maxWidth == 0)

				$scale = $maxHeight/$srcHeight;

			elseif($maxHeight == 0)

				$scale = $maxWidth/$srcWidth;



            if($scale >= 1)

			{

                // ??????????

                $width   =  $srcWidth;

                $height  =  $srcHeight;

            }

			else

			{

                // ?????

                $width  = (int)($srcWidth*$scale);

                $height = (int)($srcHeight*$scale);

            }



			if($gen == 1)

			{

				$width = $maxWidth;

				$height = $maxHeight;

			}



			$paths = pathinfo($image);

			$ext = Image::fileExt($image);



			if(empty($filepath))

				$thumbname = str_replace('.'.$paths['extension'],'',$image).'_'.$maxWidth.'x'.$maxHeight.'.'.$ext;

			else

				$thumbname = $filepath;

			

			$thumburl = str_replace(FANWE_ROOT,'',$thumbname);



            // ????

            $createFun = 'imagecreatefrom'.($type=='jpg'?'jpeg':$type);

			if(!function_exists($createFun))

				$createFun = 'imagecreatefromjpeg';



            $srcImg = $createFun($image);



            //?????

            if($type!='gif' && function_exists('imagecreatetruecolor'))

                $thumbImg = imagecreatetruecolor($width, $height);

            else

                $thumbImg = imagecreate($width, $height);



			$x = 0;

			$y = 0;



			if($gen == 1 && $maxWidth > 0 && $maxHeight > 0)

			{

				$resize_ratio = $maxWidth/$maxHeight;

				$src_ratio = $srcWidth/$srcHeight;

				if($src_ratio >= $resize_ratio)

				{

					$x = ($srcWidth - ($resize_ratio * $srcHeight)) / 2;

					$width = ($height * $srcWidth) / $srcHeight;

				}

				else

				{

					$y = ($srcHeight - ( (1 / $resize_ratio) * $srcWidth)) / 2;

					$height = ($width * $srcHeight) / $srcWidth;

				}

			}



            // ????

            if(function_exists("imagecopyresampled"))

                imagecopyresampled($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height, $srcWidth,$srcHeight);

            else

                imagecopyresized($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height,  $srcWidth,$srcHeight);

            if('gif'==$type || 'png'==$type) {

                $background_color  =  imagecolorallocate($thumbImg,  0,255,0);  //  ??????

				imagecolortransparent($thumbImg,$background_color);  //  ????????????????????

            }



            // ?jpeg????????

            if('jpg'==$type || 'jpeg'==$type)

				imageinterlace($thumbImg,$interlace);



            // ????

			imagefilter($thumbImg, IMG_FILTER_CONTRAST,-1);



			// ????

			imagejpeg($thumbImg,$thumbname,IMAGE_CREATE_QUALITY);

            imagedestroy($thumbImg);

            imagedestroy($srcImg);

			return array('url'=>$thumburl,'path'=>$thumbname);

         }

         return false;

    }



	public function water($source,$water,$alpha=80,$position="4")

    {

        //????????

        if(!file_exists($source)||!file_exists($water))

            return false;



        //????

        $sInfo = Image::getImageInfo($source);

        $wInfo = Image::getImageInfo($water);



        //????????????????

        if($sInfo["0"] < $wInfo["0"] || $sInfo['1'] < $wInfo['1'])

            return false;



        //????

		$sCreateFun="imagecreatefrom".$sInfo['type'];

		if(!function_exists($sCreateFun))

			$sCreateFun = 'imagecreatefromjpeg';

		$sImage=$sCreateFun($source);



        $wCreateFun="imagecreatefrom".$wInfo['type'];

		if(!function_exists($wCreateFun))

			$wCreateFun = 'imagecreatefromjpeg';

        $wImage=$wCreateFun($water);



        //?????????

        imagealphablending($wImage, true);



        switch (intval($position))

        {

        	case 0: break;

        	//??

        	case 1:

        		$posY=0;

		        $posX=0;

		        //??????

		        imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);

        		break;

        	//??

        	case 2:

        		$posY=0;

		        $posX=$sInfo[0]-$wInfo[0];

		        //??????

		        imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);

        		break;

        	//??

        	case 3:

        		$posY=$sInfo[1]-$wInfo[1];

		        $posX=0;

		        //??????

		        imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);

        		break;

        	//??

        	case 4:

		        $posY=$sInfo[1]-$wInfo[1];

		        $posX=$sInfo[0]-$wInfo[0];

		        //??????

		        imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);

        		break;

        	//??

        	case 5:

		        $posY=$sInfo[1]/2-$wInfo[1]/2;

		        $posX=$sInfo[0]/2-$wInfo[0]/2;

		        //??????

		        imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);

        		break;

        }



        //???????????????????

        @unlink($source);

        //????

		imagejpeg($sImage,$source,IMAGE_CREATE_QUALITY);

        imagedestroy($sImage);

		imagedestroy($wImage);

    }

}



if(!function_exists('image_type_to_extension'))

{

	function image_type_to_extension($imagetype)

	{

		if(empty($imagetype))

			return false;



		switch($imagetype)

		{

			case IMAGETYPE_GIF    : return '.gif';

			case IMAGETYPE_JPEG   : return '.jpeg';

			case IMAGETYPE_PNG    : return '.png';

			case IMAGETYPE_SWF    : return '.swf';

			case IMAGETYPE_PSD    : return '.psd';

			case IMAGETYPE_BMP    : return '.bmp';

			case IMAGETYPE_TIFF_II : return '.tiff';

			case IMAGETYPE_TIFF_MM : return '.tiff';

			case IMAGETYPE_JPC    : return '.jpc';

			case IMAGETYPE_JP2    : return '.jp2';

			case IMAGETYPE_JPX    : return '.jpf';

			case IMAGETYPE_JB2    : return '.jb2';

			case IMAGETYPE_SWC    : return '.swc';

			case IMAGETYPE_IFF    : return '.aiff';

			case IMAGETYPE_WBMP   : return '.wbmp';

			case IMAGETYPE_XBM    : return '.xbm';

			default               : return false;

		}

	}

}

?>