以前在网站介绍过ecshop更换编辑成kindeditor的方法,但是上传的图片不能自动增加水印,今天把相应方法告诉大家:
在kindeditor/php/upload_json.php中,有两处需要修改的地方。
第一步,在文件末尾添加一个方法
function imageWaterMark($groundImage, $waterPos=0, $waterImage='', $alpha=80, $waterText='', $textFont=9, $textColor='#FF0000'){ $isWaterImage = FALSE; $formatMsg = '不支持该图片格式!请使用GIF、JPG、PNG格式的图片。'; //读取水印文件 if(!empty($waterImage) && file_exists($waterImage)){ $isWaterImage = TRUE; $water_info = getimagesize($waterImage); $water_w = $water_info[0];//取得水印图片的宽 $water_h = $water_info[1];//取得水印图片的高 switch($water_info[2]){//取得水印图片的格式 case 1:$water_im = imagecreatefromgif($waterImage);break; case 2:$water_im = imagecreatefromjpeg($waterImage);break; case 3:$water_im = imagecreatefrompng($waterImage);break; default:die($formatMsg); } } //读取背景图片 if(!empty($groundImage) && file_exists($groundImage)){ $ground_info = getimagesize($groundImage); $ground_w = $ground_info[0];//取得背景图片的宽 $ground_h = $ground_info[1];//取得背景图片的高 switch($ground_info[2]){//取得背景图片的格式 case 1:$ground_im = imagecreatefromgif($groundImage);break; case 2:$ground_im = imagecreatefromjpeg($groundImage);break; case 3:$ground_im = imagecreatefrompng($groundImage);break; default:die($formatMsg); } }else{ alert("水印图片不存在!"); } //水印位置 if($isWaterImage){//图片水印 $w = $water_w; $h = $water_h; $label = "图片的"; } if(($ground_w<$w) || ($ground_h<$h)){ echo "需要加水印的图片的长度或宽度比水印".$label."还小,无法生成水印!"; return; // www.zuimoban.com } switch($waterPos){ case 0://随机 $posX = rand(0,($ground_w - $w)); $posY = rand(0,($ground_h - $h)); break; case 1://1为顶端居左 $posX = 0; $posY = 0; break; case 2://2为顶端居中 $posX = ($ground_w - $w) / 2; $posY = 0; break; case 3://3为顶端居右 $posX = $ground_w - $w; $posY = 0; break; case 4://4为中部居左 $posX = 0; $posY = ($ground_h - $h) / 2; break; case 5://5为中部居中 $posX = ($ground_w - $w) / 2; $posY = ($ground_h - $h) / 2; break; case 6://6为中部居右 $posX = $ground_w - $w; $posY = ($ground_h - $h) / 2; break; case 7://7为底端居左 $posX = 0; $posY = $ground_h - $h; break; case 8://8为底端居中 $posX = ($ground_w - $w) / 2; $posY = $ground_h - $h; break; case 9://9为底端居右 $posX = $ground_w - $w; $posY = $ground_h - $h; if(!$isWaterImage){ $posY = $ground_h - $h-20; } break; default://随机 $posX = rand(0,($ground_w - $w)); $posY = rand(0,($ground_h - $h)); break; } //设定图像的混色模式 imagealphablending($ground_im, true); if($isWaterImage){//图片水印 //imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件 //生成混合图像 imagecopymerge($ground_im, $water_im, $posX, $posY, 0, 0, $water_w, $water_h, $alpha); } else {//文字水印 if( !empty($textColor) && (strlen($textColor)==7)){ $R = hexdec(substr($textColor,1,2)); $G = hexdec(substr($textColor,3,2)); $B = hexdec(substr($textColor,5)); } else { die("水印文字颜色格式不正确!"); } imagestring($ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B)); } //生成水印后的图片 @unlink($groundImage); switch($ground_info[2]){//取得背景图片的格式 case 1:imagegif($ground_im,$groundImage);break; case 2:imagejpeg($ground_im,$groundImage,100);break;//注意这里的100,经测试,100是图片质量最佳 的,但文件大小会增加很多,95的时候质量还不错,大小和原来的差不多。作者采用95的值。 case 3:imagepng($ground_im,$groundImage);break; default:die($errorMsg); } //释放内存 if(isset($water_info)) unset($water_info); if(isset($water_im)) imagedestroy($water_im); unset($ground_info); imagedestroy($ground_im); }
第二步,找到$json = new Services_JSON();(这个文件中有两处,alert($msg)方法里的不用操作),在后面添加如下一段代码
$water_mark = 1;//1为加水印, 其它为不加
$water_pos = 9;//水印位置,10种状态【0为随机,1为顶端居左,2为顶端居中,3为顶端居右;4为中部居左,5为中部居中,6为中部居右;7为底端居左,8为底端居中,9为底端居】
$water_img = $_SERVER['DOCUMENT_ROOT'].'/images/water.gif';//水印图片,默认填写空,请将图片上传至网站根目录的images下,例: water.gif $water_alpha = 50;//水印透明度 $water_text = '';//水印字符串,默认填写空; //$water_fontfile = $_SERVER['DOCUMENT_ROOT'] .'/upfiles/fonts/arial.ttf';//文字水印使用的字体; if($water_mark == 1){ imageWaterMark($file_path, $water_pos, $water_img, $water_alpha, $water_text); }
这里只需要上传一张水印图片即可。
完成上述操作后,在用编辑器上传图片就可以实现上图的效果了。
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