ueditor 图片加水印

/*PHP图片加文字水印类库


  该类库暂时只支持文字水印，位置为右下角，颜色随机

 调用方法：
   1、在需要加水印的文件顶部引入类库：
      include_once 'imageClass.php';
   2、声明新类：
    $tpl=new image_fu;
   3、给图片水印提供参数：
      $tpl->img(图片路径,水印文字,字体路径,字体大小,字体角度);
    比如：$tpl->img('abc.jpg','这是水印文字','ziti.ttf',30,0)

*/

 class image_fu{

   private $image;
   private $img_info;
   private $img_width;
   private $img_height;
   private $img_im;
   private $img_text;
   private $img_ttf='';
   private $img_new;
   private $img_text_size;
   private $img_jd;


   function img($img='',$txt='',$ttf='',$size=12,$jiaodu=0){
    if(isset($img)&&file_exists($img)){//检测图片是否存在
       $this->image   =$img;
       $this->img_text=$txt;
       $this->img_text_size=$size;
       $this->img_jd=$jiaodu;
      if(file_exists($ttf)){
       $this->img_ttf=$ttf;
      }else{
       exit('字体文件：'.$ttf.'不存在！');
      }
       $this->imgyesno();
    }else{
        exit('图片文件:'.$img.'不存在');
     }
   }

   private function imgyesno(){

    $this->img_info  =getimagesize($this->image);
    $this->img_width =$this->img_info[0];//图片宽
    $this->img_height=$this->img_info[1];//图片高

    //检测图片类型
    switch($this->img_info[2]){
             case 1:$this->img_im = imagecreatefromgif($this->image);break;
             case 2:$this->img_im = imagecreatefromjpeg($this->image);break;
             case 3:$this->img_im = imagecreatefrompng($this->image);break;
             default:exit('图片格式不支持水印');
    }

       $this->img_text();
   }


   private function img_text(){

     imagealphablending($this->img_im,true);

     //设定颜色
      $color=imagecolorallocate($this->img_im,255,255,255);
      $txt_height=$this->img_text_size;
      $txt_jiaodu=$this->img_jd;
      $ttf_im=imagettfbbox($txt_height,$txt_jiaodu,$this->img_ttf,$this->img_text);
      $w = $ttf_im[2] - $ttf_im[6];
          $h = $ttf_im[3] - $ttf_im[7];
      //$w = $ttf_im[7];
          //$h = $ttf_im[8];

          unset($ttf_im);

      $txt_y     =$this->img_height*0.5;
      $txt_x     =$this->img_width*0.2;
      //$txt_y     =0;
      //$txt_x     =0;



      $this->img_new=@imagettftext($this->img_im,$txt_height,$txt_jiaodu,$txt_x,$txt_y,$color,$this->img_ttf,$this->img_text);

     @unlink($this->image);//删除图片
    switch($this->img_info[2]) {//取得背景图片的格式
          case 1:imagegif($this->img_im,$this->image);break;
          case 2:imagejpeg($this->img_im,$this->image);break;
          case 3:imagepng($this->img_im,$this->image);break;
          default: exit('水印图片失败');
        }

   }


   //显示图片
   function img_show(){echo '';}

   //释放内存
   private function img_nothing(){
     unset($this->img_info);
         imagedestroy($this->img_im);
   }

 }

?>

    /**
     * Created by JetBrains PhpStorm.
     * User: taoqili
     * Date: 12-7-18
     * Time: 上午10:42
     */
    header("Content-Type: text/html; charset=utf-8");
    error_reporting(E_ERROR | E_WARNING);
    include "Uploader.class.php";
    //上传图片框中的描述表单名称，
    $title = htmlspecialchars($_POST['pictitle'], ENT_QUOTES);
    $path = htmlspecialchars($_POST['dir'], ENT_QUOTES);

    //上传配置
    $config = array(
        "savePath" => ($path == "1" ? "upload/" : "upload1/"),
        "maxSize" => 1000, //单位KB
        "allowFiles" => array(".gif", ".png", ".jpg", ".jpeg", ".bmp")
    );

    //生成上传实例对象并完成上传
    $up = new Uploader("upfile", $config);

    /**
     * 得到上传文件所对应的各个参数,数组结构
     * array(
     *     "originalName" => "",   //原始文件名
     *     "name" => "",           //新文件名
     *     "url" => "",            //返回的地址
     *     "size" => "",           //文件大小
     *     "type" => "" ,          //文件类型
     *     "state" => ""           //上传状态，上传成功时必须返回"SUCCESS"
     * )
     */
    $info = $up->getFileInfo();

    /**
     * 向浏览器返回数据json数据
     * {
     *   'url'      :'a.jpg',   //保存后的文件路径
     *   'title'    :'hello',   //文件描述，对图片来说在前端会添加到title属性上
     *   'original' :'b.jpg',   //原始文件名
     *   'state'    :'SUCCESS'  //上传状态，成功时返回SUCCESS,其他任何值将原样返回至图片上传框中
     * }
     */

/*    include "imgwater.php";
    $tpl=new image_fu;
    $tpl->img($info['url'],'http://www.zgxbzh.com/','simsun.ttc',30,0);*/

    echo "{'url':'" . $info["url"] . "','title':'" . $title . "','original':'" . $info["originalName"] . "','state':'" . $info["state"] . "'}";