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一个水印类[未完成]

时间：2009-09-02

来源：互联网

本帖最后由如惈于 2009-9-2 17:47 编辑

我是菜鸟,我是菜鸟……
前两天刚学了图片添加水印，闲来无事，写了一个水印类。
OOP是自学的，感觉吧，快忘光了

（痛苦ing）...
各位象哥象姐别笑话我,写的不好,但是目前测试成功

,赶紧拿上来分享一下……
虽然还没完善，只是实现了添加图片水印，我回去继续补充

~~ 等着我啊~

[php]
<?php
define('Water',1);//水印方式(0,文字水印,1图片水印)
define('WaterImg','./water.jpg');//水印图片地址
define('WaterNum',0);//水印位置,0为随机,1-9分别为顶左\顶中\顶右\中左\中中\中右\底左\底中\底右
define('WaterX',81);//水印长
define('WaterY',81);//水印高
define('WaterType','image/jpeg');//水印图片类型
define('WaterText','爱搜罗');//水印文字(必须先转换成UTF-8才能实现中文水印)
define('WaterTextColor','#000000');//水印文字颜色
define('WaterTextSize',50);//水印文字大小 px
define('WaterTextFont','C:\WINDOWS\Fonts\SIMFANG.TTF');//水印文字字体 (仿宋)
define('WaterPtc',50);//水印透明度
//////////////////////水印默认设置完毕

class water
{
private $img;//图片地址
private $img_type;//图片类型
//private $img_mime;//图片实际类型
private $img_x;//图片长
private $img_y;//图片高
private $is_water;//是否可以添加水印,布尔
private $water_img;//水印图片
private $water_text;//图片文字(UTF-8)
private $water_num;//水印位置(可能用不着)
private $water_w = WaterX;//water的宽
private $water_h = WaterY ;//water的长
private $water_x;//水印的x位置
private $water_y;//水印的y位置
private $src_x;//画布与water两图的长度差
private $src_y;//画布与water两图的高度差
private $err_msg;//图片地址

public function __construct($img,$img_type)
{
      if (file_exists($img) == FALSE)
      {
         $this->Err_Img('No_Img');
      }
      $this->img = $img;
      $this->img_type = $img_type;//写入图片类型
      $this->Check_GD();//检查GD库
      $this->Do_Water();//判断水印方式

      $this->Type_Img();//判断图片类型
}
/*
   * 检查GD库
   */
public function Check_GD(){
      if (function_exists("gd_info") == FALSE)
      {
         $this->Err_Img('No_Gd');
      }
}
/*
   * 处理水印方式及water文件类型
   */
public function Do_Water()
{
      if (Water == 1)//图片水印
      {
         $this->Img_Water();//处理water图片
      }else{//文字水印
         $this->Text_xy();//处理文字水印图片
      }
}
/*
   * 处理water图片
   */
public function Img_Water()
{
      if (file_exists(WaterImg) == FALSE)
      {
         $this->Err_Img('No_WaterImg');
         //使用文字水印
      }
      switch (WaterType)
      {
         case 'image/jpeg':
            $this->water_img = imagecreatefromjpeg(WaterImg);
            break;
      }
}
/*
   * 获得文字的长宽并计算两图的长宽差
   */
public function Text_xy()
{
      $str = iconv('GB2312','UTF-8',WaterText);
      $temp = imagettfbbox(50,0,WaterTextFont,$str);//取得使用 TrueType 字体的文本的范围
      $w = $temp[2] - $temp[6];
      $h = $temp[3] - $temp[7];
      $this->src_x = $this->img_x - $w;
      $this->src_y = $this->img_y - $h;
}
/*
   * 判断图片是否能够添加水印,比较大小
   */
public function Is_Water()
{
      if (Water == 1)//图片水印
      {
         $this->src_x = $this->img_x - WaterX;
         $this->src_y = $this->img_y - WaterY;
         if ($this->src_x <= 0 && $this->src_y <= 0)
         {
            $this->Err_Img('Too_Small');
         }
      }else{//文字水印
         if ($this->src_x <= 0 && $this->src_y <=0)
         {
            $this->Err_Img('Too_Small');
         }
      }
}
/*
   * 处理水印位置
   * 得到水印位置的坐标
   */
public function Water_Num()
{
      switch(WaterNum)
      {
         case 0://随机
            $this->water_x = rand(0,($this->img_x - $this->water_w));
            $this->water_y = rand(0,($this->img_y - $this->water_h));
            break;
         case 1://顶端居左
            $this->water_x = 0;
            $this->water_y = 0;
            break;
         case 2://顶端居中
            $this->water_x = ($this->img_x - $this->water_w)/2;
            $this->water_y = 0;
            break;
         case 3://顶端居右
            $this->water_x = $this->img_x - $this->water_w;
            $this->water_y = 0;
            break;
         case 4://中间居左
            $this->water_x = 0;
            $this->water_y = ($this->img_y - $this->water_h)/2;
            break;
         case 5://中间居中
            $this->water_x = ($this->img_x - $this->water_w)/2;
            $this->water_y = ($this->img_y - $this->water_h)/2;
            break;
         case 6://中间居右
            $this->water_x = $this->img_x - $this->water_w;
            $this->water_y = ($this->img_y - $this->water_h)/2;
            break;
         case 7://底部居左
            $this->water_x = 0;
            $this->water_y = $this->img_y - $this->water_h;
            break;
         case 8://底部居中
            $this->water_x = ($this->img_x - $this->water_w)/2;
            $this->water_y = $this->img_y - $this->water_h;
            break;
         case 9://底部居右
            $this->water_x = $this->img_x - $this->water_w;
            $this->water_y = $this->img_y - $this->water_h;
            break;
         default://随机
            $this->water_x = rand(0,($this->img_x - $this->water_w));
            $this->water_y = rand(0,($this->img_y - $this->water_h));
      }
}
/*
   * 判断图片类型
   */
public function Type_Img()
{
      switch ($this->img_type)
         {
            case 'image/jpeg':
                  header("Content-type: image/jpeg");
                  $this->img = imagecreatefromjpeg($this->img);
                  break;
         }
         $this->Img_Water();//处理water图片
         $this->img_x = imagesx($this->img);
         $this->img_y = imagesy($this->img);
         $this->Water_Num();//判断水印位置
         $this->Is_Water();
         $this->Make_img();
}
/*
   * 制作图片水印
   */
public function Make_img(){
            imagecopymerge($this->img,$this->water_img,$this->water_x,$this->water_y,0,0,WaterX,WaterY,WaterPtc);
            imagejpeg($this->img);
}
/*
   * 制作文字水印
   */
public function Make_Text()
{
            echo '测试';
}
/*
   * 返回错误信息
   */
public function Err_Img($msg)
{
      switch($msg)
      {
         case 'No_Gd':
            $this->err_msg = '没有安装GD库';
            break;
         case 'No_Img':
            $this->err_msg = '图片不存在';
            break;
         case 'No_WaterImg':
            $this->err_msg = 'water图片不存在';
            break;
         case 'Too_Small':
            $this->err_msg = '图片过小';
            break;
      }
      die($this->err_msg);//输出错误信息
}
public function __destruct()
{
      imagedestroy($this->img);
      imagedestroy($this->img_water);
}
}

$img = new water('./100.jpg','image/jpeg');//实例化

?>
[/php]

-----------------华丽的分割线-----------------

晚上回去再补充补充.......

这个是我的PHP处女原创帖.....激动ing