<?php
/**
 * [LJCMS] (C)2012-2099 LJdev,Inc.
 * <E-Mail：aspcms@qq.com>
 * Url http://www.liangjing.org
 *     http://www.8CMS.com
 * Update 2014.04.03
*/

class XImage extends X{
	
	public static function makeThumb($srcfile, $channel="") {
        
        parent::loadLib('option');
        $upload_config = XOption::get('upload_config');        
        
		
		if (!file_exists($srcfile)) {
			return '';
		}
		$dstfile = $srcfile.'.thumb.jpg';

		
		if((int)$thumbwidth>0 && (int)$thumbheight>0){
			$tow = intval($thumbwidth);
			$toh = intval($thumbheight);
		}else{
			switch($channel){
                case 'photo';
					$tow = intval($upload_config['photothumbwidth']);
					$toh = intval($upload_config['photothumbheight']);
				case 'product';
					$tow = intval($upload_config['productthumbwidth']);
					$toh = intval($upload_config['productthumbheight']);
				break;
				default;
					$tow = intval($upload_config['thumbwidth']);
					$toh = intval($upload_config['thumbheight']);
				break;
			}
		}

		if($tow < 60) $tow = 60;
		if($toh < 60) $toh = 60;
        
        
		$make_max = 0;
		$maxtow = intval($upload_config['maxthumbwidth']);
		$maxtoh = intval($upload_config['maxthumbheight']);
		if($maxtow >= 300 && $maxtoh >= 300) {
			$make_max = 1;
		}
		
		
		$im = '';
		if($data = getimagesize($srcfile)) {
			if($data[2] == 1) {
				$make_max = 0;
				if(function_exists("imagecreatefromgif")) {
					$im = imagecreatefromgif($srcfile);
				}
			} elseif($data[2] == 2) {
				if(function_exists("imagecreatefromjpeg")) {
					$im = imagecreatefromjpeg($srcfile);
				}
			} elseif($data[2] == 3) {
				if(function_exists("imagecreatefrompng")) {
					$im = imagecreatefrompng($srcfile);
				}
			}
		}
		if(!$im) return '';
		
		$srcw = imagesx($im);
		$srch = imagesy($im);
		
		$towh = $tow/$toh;
		$srcwh = $srcw/$srch;
		if($towh <= $srcwh){
			$ftow = $tow;
			$ftoh = $ftow*($srch/$srcw);
			
			$fmaxtow = $maxtow;
			$fmaxtoh = $fmaxtow*($srch/$srcw);
		} else {
			$ftoh = $toh;
			$ftow = $ftoh*($srcw/$srch);
			
			$fmaxtoh = $maxtoh;
			$fmaxtow = $fmaxtoh*($srcw/$srch);
		}
		if($srcw <= $maxtow && $srch <= $maxtoh) {
			$make_max = 0;
		}
		if($srcw > $tow || $srch > $toh) {
			if(function_exists("imagecreatetruecolor") && function_exists("imagecopyresampled") && @$ni = imagecreatetruecolor($ftow, $ftoh)) {
				imagecopyresampled($ni, $im, 0, 0, 0, 0, $ftow, $ftoh, $srcw, $srch);
				
				if($make_max && @$maxni = imagecreatetruecolor($fmaxtow, $fmaxtoh)) {
					imagecopyresampled($maxni, $im, 0, 0, 0, 0, $fmaxtow, $fmaxtoh, $srcw, $srch);
				}
			} elseif(function_exists("imagecreate") && function_exists("imagecopyresized") && @$ni = imagecreate($ftow, $ftoh)) {
				imagecopyresized($ni, $im, 0, 0, 0, 0, $ftow, $ftoh, $srcw, $srch);
				
				if($make_max && @$maxni = imagecreate($fmaxtow, $fmaxtoh)) {
					imagecopyresized($maxni, $im, 0, 0, 0, 0, $fmaxtow, $fmaxtoh, $srcw, $srch);
				}
			} else {
				return '';
			}
			if(function_exists('imagejpeg')) {
				imagejpeg($ni, $dstfile);
				
				if($make_max) {
					imagejpeg($maxni, $srcfile);
				}
			} elseif(function_exists('imagepng')) {
				imagepng($ni, $dstfile);
				
				if($make_max) {
					imagepng($maxni, $srcfile);
				}
			}
			imagedestroy($ni);
			if($make_max) {
				imagedestroy($maxni);
			}
		}
		imagedestroy($im);

		if(!file_exists($dstfile)) {
			return '';
		} else {
			return $dstfile;
		}
	}
    
	
	public static function makeWaterMark($srcfile) {
	    
        parent::loadLib('option');
        $upload_config = XOption::get('upload_config'); 
        
        
		$watermarkfile = empty($upload_config['watermarkfile'])?BASE_ROOT.'./tpl/static/images/watermark.png':BASE_ROOT."./".$upload_config['watermarkfile'];

        if(!file_exists($watermarkfile) || !$water_info = getimagesize($watermarkfile)) {
			return '';
		}
		$water_w = $water_info[0];
		$water_h = $water_info[1];
		$water_im = '';
		switch($water_info[2]) {
			case 1:@$water_im = imagecreatefromgif($watermarkfile);break;
			case 2:@$water_im = imagecreatefromjpeg($watermarkfile);break;
			case 3:@$water_im = imagecreatefrompng($watermarkfile);break;
			default:break;
		}
		if(empty($water_im)) {
			return '';
		}

		
		if(!file_exists($srcfile) || !$src_info = getimagesize($srcfile)) {
			return '';
		}
		$src_w = $src_info[0];
		$src_h = $src_info[1];
		$src_im = '';
		switch($src_info[2]) {
			case 1:
				
				$fp = fopen($srcfile, 'rb');
				$filecontent = fread($fp, filesize($srcfile));
				fclose($fp);
				if(strpos($filecontent, 'NETSCAPE2.0') === FALSE) {
					@$src_im = imagecreatefromgif($srcfile);
				}
				break;
			case 2:@$src_im = imagecreatefromjpeg($srcfile);break;
			case 3:@$src_im = imagecreatefrompng($srcfile);break;
			default:break;
		}
		if(empty($src_im)) {
			return '';
		}
		
		
		if(($src_w < $water_w + 150) || ($src_h < $water_h + 150)) {
			return '';
		}
		
		
		switch(intval($upload_config['watermarkpos'])) {
			case 1:
				$posx = 0;
				$posy = 0;
				break;
			case 2:
				$posx = $src_w - $water_w;
				$posy = 0;
				break;
			case 3:
				$posx = 0;
				$posy = $src_h - $water_h;
				break;
			case 4:
				$posx = $src_w - $water_w;
				$posy = $src_h - $water_h;
				break;
			default:
				$posx = mt_rand(0, ($src_w - $water_w));
				$posy = mt_rand(0, ($src_h - $water_h));
				break;
		}

		
		@imagealphablending($src_im, true);
		
		@imagecopy($src_im, $water_im, $posx, $posy, 0, 0, $water_w, $water_h);
		switch($src_info[2]) {
			case 1:@imagegif($src_im, $srcfile);break;
			case 2:@imagejpeg($src_im, $srcfile);break;
			case 3:@imagepng($src_im, $srcfile);break;
			default:return '';
		}
		@imagedestroy($water_im);
		@imagedestroy($src_im);
	}

}
?>
