为百度UE编辑器上传图片添加水印功能

UEditor编辑器上传图片是自动提取的，但是图片没有水印功能，下面小编和各位一起来看看。

UEditor编辑器没有上传图片加水印的功能，需要进行二次开发，本例是在PHPCMS系统中对百度编辑器进行二次开发，添加上传图片加水印功能。

首先打开UEditor编辑器文件目录的php文件夹，打开Uploader.class.php，把PHPCMS添加水印的方法复制过来，加到这个类所有成员方法最后面，然后进行修改如下：

//图片加水印public function watermark($source, $target = '', $w_pos = '', $w_img = '', $w_text = '99danji',$w_font = 8, $w_color = '#ff0000') {  $this->w_img = 'watermark.png';  $this->w_pos = 9;  $this->w_minwidth = 400;  $this->w_minheight = 200;  $this->w_quality = 80;  $this->w_pct = 85;   $w_pos = $w_pos ? $w_pos : $this->w_pos;  $w_img = $w_img ? $w_img : $this->w_img;  //if(!$this->watermark_enable || !$this->check($source)) return false;  if(!$target) $target = $source;  //$w_img = PHPCMS_PATH.$w_img;  //define('WWW_PATH', dirname(dirname(dirname(__FILE__)));  $w_img = '../../../images/water/'.$w_img;  $source_info = getimagesize($source);  $source_w  = $source_info[0];  $source_h  = $source_info[1];  //if($source_w < $this->w_minwidth || $source_h < $this->w_minheight) return false;  switch($source_info[2]) {    case 1 :      $source_img = imagecreatefromgif($source);      break;    case 2 :      $source_img = imagecreatefromjpeg($source);      break;    case 3 :      $source_img = imagecreatefrompng($source);      break;    default :      return false;  }  if(!empty($w_img) && file_exists($w_img)) {    $ifwaterimage = 1;    $water_info  = getimagesize($w_img);    $width    = $water_info[0];    $height    = $water_info[1];    switch($water_info[2]) {      case 1 :        $water_img = imagecreatefromgif($w_img);        break;      case 2 :        $water_img = imagecreatefromjpeg($w_img);        break;      case 3 :        $water_img = imagecreatefrompng($w_img);        break;      default :        return;    }  } else {        $ifwaterimage = 0;    $temp = imagettfbbox(ceil($w_font*2.5), 0, PC_PATH.'libs/data/font/elephant.ttf', $w_text);    $width = $temp[2] - $temp[6];    $height = $temp[3] - $temp[7];    unset($temp);  }  switch($w_pos) {    case 1:      $wx = 5;      $wy = 5;      break;    case 2:      $wx = ($source_w - $width) / 2;      $wy = 0;      break;    case 3:      $wx = $source_w - $width;      $wy = 0;      break;    case 4:      $wx = 0;      $wy = ($source_h - $height) / 2;      break;    case 5:      $wx = ($source_w - $width) / 2;      $wy = ($source_h - $height) / 2;      break;    case 6:      $wx = $source_w - $width;   $wy = ($source_h - $height) / 2;      break;    case 7:      $wx = 0;      $wy = $source_h - $height;      break;    case 8:      $wx = ($source_w - $width) / 2;      $wy = $source_h - $height;      break;    case 9:      $wx = $source_w - $width;      $wy = $source_h - $height;      break;    case 10:      $wx = rand(0,($source_w - $width));      $wy = rand(0,($source_h - $height));      break;           default:      $wx = rand(0,($source_w - $width));      $wy = rand(0,($source_h - $height));      break;  }  if($ifwaterimage) {    if($water_info[2] == 3) {      imagecopy($source_img, $water_img, $wx, $wy, 0, 0, $width, $height);    } else {      imagecopymerge($source_img, $water_img, $wx, $wy, 0, 0, $width, $height, $this->w_pct);    }  } else {    if(!empty($w_color) && (strlen($w_color)==7)) {      $r = hexdec(substr($w_color,1,2));      $g = hexdec(substr($w_color,3,2));      $b = hexdec(substr($w_color,5));    } else {      return;    }    imagestring($source_img,$w_font,$wx,$wy,$w_text,imagecolorallocate($source_img,$r,$g,$b));  }    switch($source_info[2]) {    case 1 :      imagegif($source_img, $target);      break;    case 2 :      imagejpeg($source_img, $target, $this->w_quality);      break;    case 3 :      imagepng($source_img, $target);      break;    default :      return;  }   if(isset($water_info)) {    unset($water_info);  }  if(isset($water_img)) {    imagedestroy($water_img);  }  unset($source_info);  imagedestroy($source_img);  return true;} public function check($image) {  return extension_loaded('gd') && preg_match("//.(jpg|jpeg|gif|png)/i", $image, $m) && file_exists($image) && function_exists('imagecreatefrom'.($m[1] == 'jpg' ? 'jpeg' : $m[1]));}