*自己整理的一个水印类*
支持添加图片、文字、填充颜色区域
代码如下 | 复制代码 |
/** * 图片加水印类,支持文字水印、透明度设置、自定义水印位置等。 * 使用示例: * $obj = new WaterMask($imgFileName); //实例化对象 * $obj->$waterType = 1; //类型:0为文字水印、1为图片水印 * $obj->$transparent = 45; //水印透明度 * $obj->$waterStr = 'icp.niufee.com'; //水印文字 * $obj->$fontSize = 18; //文字字体大小 * $obj->$fontColor = array(255,255,255); //水印文字颜色(RGB) * $obj->$fontFile = 'AHGBold.ttf'; //字体文件 * …… * $obj->output(); //输出水印图片文件覆盖到输入的图片文件 * @modify liuzp111 */ classWaterMask{ public$waterTypeImage = false; //水印类型:启用图片水印 public$waterTypeStr = false; //水印类型:启用文字水印 public$pos = 0; //水印位置 public$transparent = 45; //水印透明度(0---100)数值越大越不透明
public$waterStr ='icp.niufee.com'; //水印文字 public$fontSize = 14; //文字字体大小 public$fontColor =array(0,0,0); //水印文字颜色(RGB) 默认黑色 public$fontFile ='./font/simfang.ttf'; //字体文件
public$waterImg ='logo.png'; //水印图片
private$srcImg =''; //需要添加水印的图片 private$im =''; //图片句柄 private$water_im =''; //水印图片句柄 private$srcImg_info =''; //图片信息 private$waterImg_info =''; //水印图片信息 private$str_w =''; //水印文字宽度 private$str_h =''; //水印文字高度 private$x =''; //水印X坐标 private$y =''; //水印y坐标 public$output_img =''; //存储输出图片到哪里 public$is_draw_rectangle= false; //是否绘制矩形区域 (暂不支持自定义位置) //public $rectange_color = ''; //绘制矩形区域的颜色 private$result_array =array(); //结果数组 publicfunction__construct($img) { //析构函数 //$this->srcImg = file_exists($img) ? $img : die('"'.$img.'" 源文件不存在!'); if(file_exists($img)){ $this->srcImg =$img; }else{ returnarray('data'=>'','info'=>'源文件不存在!','status'=>0); } }
privatefunctionimginfo() { //获取需要添加水印的图片的信息,并载入图片。 $this->srcImg_info =getimagesize($this->srcImg); switch($this->srcImg_info[2]) { case3: $this->im = imagecreatefrompng($this->srcImg); break1; case2: $this->im = imagecreatefromjpeg($this->srcImg); break1; case1: $this->im = imagecreatefromgif($this->srcImg); break1; default: //die('原图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。'); returnarray('data'=>'','info'=>'原图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。','status'=>0); } }
privatefunctionwaterimginfo() { //获取水印图片的信息,并载入图片。 $this->waterImg_info =getimagesize($this->waterImg); switch($this->waterImg_info[2]) { case3: $this->water_im = imagecreatefrompng($this->waterImg); break1; case2: $this->water_im = imagecreatefromjpeg($this->waterImg); break1; case1: $this->water_im = imagecreatefromgif($this->waterImg); break1; default: //die('水印图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。'); returnarray('data'=>'','info'=>'水印图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。','status'=>0); } } privatefunctionwaterpos() { //水印位置算法 switch($this->pos) { case0: //随机位置 $this->x = rand(0,$this->srcImg_info[0]-$this->waterImg_info[0]); $this->y = rand(0,$this->srcImg_info[1]-$this->waterImg_info[1]); break1; case1: //上左 $this->x = 0; $this->y = 0; break1; case2: //上中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = 0; break1; case3: //上右 $this->x =$this->srcImg_info[0]-$this->waterImg_info[0]; $this->y = 0; break1; case4: //中左 $this->x = 0; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break1; case5: //中中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break1; case6: //中右 $this->x =$this->srcImg_info[0]-$this->waterImg_info[0]; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break1; case7: //下左 $this->x = 0; $this->y =$this->srcImg_info[1]-$this->waterImg_info[1]; break1; case8: //下中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y =$this->srcImg_info[1]-$this->waterImg_info[1]; break1; case9: //下中偏上100px $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y =$this->srcImg_info[1]-$this->waterImg_info[1] - 100; break1; default: //下右 $this->x =$this->srcImg_info[0]-$this->waterImg_info[0]; $this->y =$this->srcImg_info[1]-$this->waterImg_info[1]; break1; } } /** * 水印文字图片位置,根据需求调整 */ privatefunctionwaterposStr() { $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y =$this->srcImg_info[1]-$this->waterImg_info[1] - 3; } privatefunctionwaterimg($type='') { if($this->srcImg_info[0] <=$this->waterImg_info[0] ||$this->srcImg_info[1] <=$this->waterImg_info[1]){ //die('水印比原图大!'); returnarray('data'=>'','info'=>'水印比原图大!','status'=>0); } if($type=='waterstr'){ $this->waterposStr(); }else{ $this->waterpos(); } $cut= imagecreatetruecolor($this->waterImg_info[0],$this->waterImg_info[1]); imagecopy($cut,$this->im,0,0,$this->x,$this->y,$this->waterImg_info[0],$this->waterImg_info[1]); $pct=$this->transparent; imagecopy($cut,$this->water_im,0,0,0,0,$this->waterImg_info[0],$this->waterImg_info[1]); imagecopymerge($this->im,$cut,$this->x,$this->y,0,0,$this->waterImg_info[0],$this->waterImg_info[1],$pct); }
privatefunctionwaterstr() { $rect= imagettfbbox($this->fontSize,0,$this->fontFile,$this->waterStr); $w=abs($rect[2]-$rect[6]); $h=abs($rect[3]-$rect[7]); $fontHeight=$this->fontSize; $this->water_im = imagecreatetruecolor($w,$h); imagealphablending($this->water_im,false); imagesavealpha($this->water_im,true); $white_alpha= imagecolorallocatealpha($this->water_im,255,255,255,127); imagefill($this->water_im,0,0,$white_alpha); $color= imagecolorallocate($this->water_im,$this->fontColor[0],$this->fontColor[1],$this->fontColor[2]); imagettftext($this->water_im,$this->fontSize,0,0,$this->fontSize,$color,$this->fontFile,$this->waterStr); $this->waterImg_info =array(0=>$w,1=>$h); $this->waterimg($type='waterstr'); } /** * 绘制矩形区 * bool imagefilledrectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color ) * bool imagerectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $col ) * @author liuzp111 */ publicfunctiondrawRectangle() { //imagefill($im,0,0,$gray);//填充资源,填充的坐标(类似PS魔棒),颜色 /* * 1--------------画长方形-------------- * bool imagerectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $col ) * 参数: 画布资源, 左上角x坐标,左上y坐标,右下x坐标,右下y坐标,颜色 */ $color= imagecolorallocate($this->im,255,255,255);//创建矩形边框颜色和填充颜色 //========================================================================= //绘制矩形区域并填充 // 参数说明: //bool imagefilledrectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color ) // im:为将图像载入为图像资源 // $x1:表示矩形左上角的X坐标 // $y1:表示矩形左上角的Y坐标 // $x2:表示矩形右下角的X坐标 // $y2:表示矩形右下角的Y坐标 // $color:为填充的RGB颜色 // imagefilledrectangle($this->im,3,$this->srcImg_info[1] - 20,$this->srcImg_info[0]-3,$this->srcImg_info[1]-3,$color); //不要使用下方的函数填充,下方填充函数为魔棒填充,容易导致填充不完整 //imagefill($this->im,$this->srcImg_info[0]/2,$this->srcImg_info[1]-8,$color);//填充资源,填充的坐标(魔棒),颜色
} functionoutput() { $this->imginfo(); //是否创建矩形区域 if($this->is_draw_rectangle){ $this->drawRectangle(); } if($this->waterTypeStr ) { $this->waterstr(); } if($this->waterTypeImage ) { $this->waterimginfo(); $this->waterimg(); } switch($this->srcImg_info[2]) { case3: $res_output= imagepng($this->im,$this->output_img); break1; case2: $res_output= imagejpeg($this->im,$this->output_img); break1; case1: $res_output= imagegif($this->im,$this->output_img); break1; default: // die('添加水印失败!'); returnarray('data'=>'','info'=>'添加水印失败!','status'=>0); break; } imagedestroy($this->im); imagedestroy($this->water_im); returnarray('data'=>$res_output,'info'=>'添加水印成功!','status'=>1); } } |
使用方式:
代码如下 | 复制代码 |
$file='58368dddc8c51_22';//需要加水印的图片 $file_ext='.jpeg';//扩展名 $imgFileName='./'.$file.$file_ext;//需要加水印图片路径 $obj=newWaterMask($imgFileName);//实例化对象 $obj->waterTypeStr = true; //开启文字水印 $obj->waterTypeImage = true; //开启图片水印 $obj->pos = 9; //定义水印图片位置 $obj->waterImg ='./water.png'; //水印图片 $obj->transparent = 100; //水印透明度 $obj->waterStr ='保险经纪人:刘测试 电话:02052552'; //水印文字 $obj->fontSize = 9; //文字字体大小 $obj->fontColor =array(0,0,0); //水印文字颜色(RGB) $obj->fontFile ='./font/msyh.ttc'; //字体文件,这里是微软雅黑 $obj->is_draw_rectangle = TRUE; //开启绘制矩形区域 $obj->output_img ='./'.$file.'_n'.$file_ext;//输出的图片路径 $obj->output(); |