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找了好久,结果没有自动换行的,又去网上把自动换行的加上去了
累的不要不要的
<?php header("Content-Type:text/html; charset=UTF-8"); class WaterMask{ public $waterType = 0; //水印类型:0为文字水印、1为图片水印 public $pos = 5; //水印位置 public $transparent = 45; //水印透明度 public $waterStr = ‘www.codefans.net‘; //水印文字 public $fontSize = 16; //文字字体大小 public $fontColor = array(255,255,255); //水印文字颜色(RGB) public $fontFile = ‘arial.ttf‘;//字体文件 public $waterImg = ‘logo.png‘;//水印图片 public $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 $y = ‘‘;//水印y坐标 function __construct($img) { $this->srcImg = file_exists($img)? $img : die(‘"‘.$img.‘" 对不起,水印文件不存在!‘); } private function imginfo() {//获取水印图片信息,并加载。 $this->srcImg_info = getimagesize($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(‘水印图片(‘.$this->srcImg.‘)水印图片格式不对,请选择PNG、JPEG、GIF格式的图片。‘); } } private function waterimginfo() {//获取水印图片并载入。 $this->waterImg_info = getimagesize($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(‘.$this->srcImg.‘)格式不对,只支持PNG、JPEG、GIF。‘); } } private function waterpos() {//水印位置算法 switch ($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; 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; } } private function waterimg() { if ($this->srcImg_info[0] <= $this->waterImg_info[0] || $this->srcImg_info[1] <= $this->waterImg_info[1]){ die(‘水印比原图大!‘); } $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() { $this->waterStr = $this->autowrap($this->fontSize, 0, $this->fontFile, $this->waterStr, 250); // 自动换行处理 echo $this->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); $this->waterimg(); } function autowrap($fontsize, $angle, $fontface, $string, $width) { // 这几个变量分别是 字体大小, 角度, 字体名称, 字符串, 预设宽度 $content = ""; // 将字符串拆分成一个个单字 保存到数组 letter 中 for ($i=0;$i<mb_strlen($string);$i++) { $letter[] = mb_substr($string, $i, 1); } foreach ($letter as $l) { $teststr = $content." ".$l; $testbox = imagettfbbox($fontsize, $angle, $fontface, $teststr); // 判断拼接后的字符串是否超过预设的宽度 if (($testbox[2] > $width) && ($content !== "")) { $content .= "\n"; } $content .= $l; } return $content; } function output() { $this->imginfo(); if ($this->waterType == 0) { $this->waterstr(); }else { $this->waterimginfo(); $this->waterimg(); } switch ($this->srcImg_info[2]) { case 3: imagepng($this->im,$this->srcImg); break 1; case 2: imagejpeg($this->im,$this->srcImg); break 1; case 1: imagegif($this->im,$this->srcImg); break 1; default: die(‘原因未知:水印添加失败!‘); break; } imagedestroy($this->im); imagedestroy($this->water_im); } } ?>
下面是页面代码
include("WaterMask.php"); $imgFileName="$loadpath"; $obj = new WaterMask($imgFileName); $obj->waterType = 0;//水印类型:0为文字水印、1为图片水印 $obj->transparent = 100;//水印透明度 $obj->waterStr = $_POST["Content"];//水印文字 $obj->fontSize = 20;//字体大小 $obj->fontColor = array(0,0,0);//水印文字颜色(RGB值) $obj->fontFile = ‘D:/WWW/wenzi1.ttf‘; //字体名称 $obj->output(); //输出水印图片
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原文地址:http://www.cnblogs.com/zqxzs/p/4249616.html