PHP水印类,支持添加图片、文字、填充颜色区域的

*自己整理的一个水印类*

支持添加图片文字、填充颜色区域

<?php /** * 图片水印类,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 */ class WaterMask{ 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 $result_array = array(); //结果数组 public function __construct($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{ return array('data'=>'','info'=>'源文件不存在!','status'=>0); } } private function imginfo() { //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]) { case 3: $this->im = imagecreatefrompng($this->srcImg); break 1; case 2: $this->im = imagecreatefromjpeg($this->srcImg); break 1; case 1: $this->im = imagecreatefromgif($this->srcImg); break 1; default: //die('原图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。'); return array('data'=>'','info'=>'原图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。','status'=>0); } } private function waterimginfo() { //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]) { case 3: $this->water_im = imagecreatefrompng($this->waterImg); break 1; case 2: $this->water_im = imagecreatefromjpeg($this->waterImg); break 1; case 1: $this->water_im = imagecreatefromgif($this->waterImg); break 1; default: //die('水印图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。'); return array('data'=>'','info'=>'水印图片('.$this->srcImg.')格式不对,只支持PNG、JPEG、GIF。','status'=>0); } } private function waterpos() { //水印位置算法 switch ($this->pos) { case 0: //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]); break 1; case 1: //上左 $this->x = 0; $this->y = 0; break 1; case 2: //上中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = 0; break 1; case 3: //上右 $this->x = $this->srcImg_info[0]-$this->waterImg_info[0]; $this->y = 0; break 1; case 4: //中左 $this->x = 0; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break 1; case 5: //中中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break 1; case 6: //中右 $this->x = $this->srcImg_info[0]-$this->waterImg_info[0]; $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2; break 1; case 7: //下左 $this->x = 0; $this->y = $this->srcImg_info[1]-$this->waterImg_info[1]; break 1; case 8: //下中 $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = $this->srcImg_info[1]-$this->waterImg_info[1]; break 1; case 9: //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; break 1; default: //下右 $this->x = $this->srcImg_info[0]-$this->waterImg_info[0]; $this->y = $this->srcImg_info[1]-$this->waterImg_info[1]; break 1; } } /** * 水印文字图片位置,根据需求调整 */ private function waterposStr() { $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2; $this->y = $this->srcImg_info[1]-$this->waterImg_info[1] - 3; } private function waterimg($type='') { if ($this->srcImg_info[0] <= $this->waterImg_info[0] || $this->srcImg_info[1] <= $this->waterImg_info[1]){ //die('水印比原图大!'); return array('data'=>'','info'=>'水印比原图大!','status'=>0); } if($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); } private function waterstr() { $rect = imagettfbbox($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 $col ) * @author liuzp111 */ public function drawRectangle() { //imagefill($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 } function output() { $this->imginfo(); //是否创建矩形区域 if($this->is_draw_rectangle){ $this->drawRectangle(); } if ($this->waterTypeStr ) { $this->waterstr(); } if($this->waterTypeImage ) { $this->waterimginfo(); $this->waterimg(); } switch ($this->srcImg_info[2]) { case 3: $res_output = imagepng($this->im,$this->output_img); break 1; case 2: $res_output = imagejpeg($this->im,$this->output_img); break 1; case 1: $res_output = imagegif($this->im,$this->output_img); break 1; default: // die('添加水印失败!'); return array('data'=>'','info'=>'添加水印失败!','status'=>0); break; } imagedestroy($this->im); imagedestroy($this->water_im); return array('data'=>$res_output,'info'=>'添加水印成功!','status'=>1); } }

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