为百度UEDITOR编辑器上传图片添加水印_html/css

//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]));
}

if ($this->watermark) {
 $this->watermark($this->filePath,$this->filePath);
}