PHP添加中文水印
示例代码１：<?php
Header("Content-type: image/png"); /*通知浏览器,要输出图像*/
$im = imagecreate(400 , 300); /*定义图像的大小*/
$gray = ImageColorAllocate($im , 235 , 235 , 235);
$pink = ImageColorAllocate($im, 255 , 128 , 255);
$fontfile = "simkai.ttf";
/* $fontfile 字体的路径,视操作系统而定,可以是 simhei.ttf(黑体) , SIMKAI.TTF(楷体) , SIMFANG.TTF(仿宋) ,SIMSUN.TTC(宋体&新宋体) 等 GD 支持的中文字体*/
$str = iconv('GB2312','UTF-8','中文水印'); /*将 gb2312 的字符集转换成 UTF-8 的字符*/
ImageTTFText($im, 30, 0, 100, 200, $pink , $fontfile , $str);
/* 加入中文水印 */
Imagepng($im);
ImageDestroy($im);
?>
示例代码２：
<?
header("Content-type: image/jpeg");
$image = "1.jpg"; //原图
$fnt = "c:/windows/fonts/stcaiyun.ttf"; // 彩云
$str = "谨防盗版 谨防盗版";
//$str = iconv("GB2312","UTF-8",$str);
$size = 40;
$angle = 20;
$ar = imagettfbbox($size, $angle, $fnt, $str);
$width = $ar;
$height = max($size,$ar-$ar);
$im = imagecreatefromjpeg($image);
//$white = imagecolorallocate($im, 255,255,255);
$color = imagecolorallocatealpha($im, 255,255,255,1);
for($i=0;$i<5;$i++) {
//$color = imagecolorclosestalpha($im,255,255,255,90-$i*10);
imagettftext($im, $size, $angle, 40-$ar, $height-$ar+100*$i, $color, $fnt, $str);
}
imagejpeg($im);
imagedestroy($im);
?>
示例代码３：
<?php
class imagelogo{
var $input_image_file = ""; //输入图片的文件名
var $output_image_file = ""; //生成文件的名称
var $logo_image_name = ""; //包含存放路径的水印图片的文件名
var $logo_text = ""; //水印文字
var $logo_text_size = 18; //水印文字大小
var $logo_text_angle = 4; //水印文字角度
var $logo_text_pos = 6; //水印文字放置位置
var $logo_text_font = ""; //水印文字的字体
var $logo_text_color = "#ffffff"; //水印字体的颜色值
var $logo_image_pos = 6; //水印图片放置的位置
//1 = 顶部居左，2 = 顶部居中，3 = 顶部居右，4 = 底部居左
//5 = 底部居中，6 = 底部居右，7 = 中间居左，8 = 居中，9 = 中间居右
var $logo_image_transition = 25; //水印图片与原图片的融合度(1=100)
var $jpeg_quality = 75; //jpeg图片的质量
//生成水印图片
function create($filename=""){
if ($filename) $this->input_image_file = strtolower(trim($filename));
$src_image_type = $this->get_type($this->input_image_file);
$src_image = $this->createImage($src_image_type,$this->input_image_file);
if (!$src_image) return;
$src_image_w=imagesx($src_image);
$src_image_h=imagesy($src_image);
//开始处理水印logo图片信息，把两个图片合成为一个图片
if ($this->logo_image_name){
$this->logo_image_name = strtolower(trim($this->logo_image_name));
$logo_image_type = $this->get_type($this->logo_image_name);
$logo_image = $this->createImage($logo_image_type,$this->logo_image_name);
$logo_image_w=imagesx($logo_image);
$logo_image_h=imagesy($logo_image);
$temp_logo_image = $this->getPos($src_image_w,$src_image_h,$this->logo_image_pos,$logo_image);
$logo_image_x = $temp_logo_image["dest_x"];
$logo_image_y = $temp_logo_image["dest_y"];
imagecopymerge($src_image, $logo_image,$logo_image_x,$logo_image_y,0,0,$logo_image_w,$logo_image_h,$this->logo_image_transition);
}
//水印为纯文本
if ($this->logo_text){
$this->logo_text = $this->gb2utf8($this->logo_text);
$temp_logo_text = $this->getPos($src_image_w,$src_image_h,$this->logo_text_pos);
$logo_text_x = $temp_logo_text["dest_x"];
$logo_text_y = $temp_logo_text["dest_y"];
if(preg_match("/()()()/i", $this->logo_text_color, $color))
{
$red = hexdec($color);
$green = hexdec($color);
$blue = hexdec($color);
$logo_text_color = imagecolorallocate($src_image, $red,$green,$blue);
}else{
$logo_text_color = imagecolorallocate($src_image, 255,255,255);
}
//用TrueType字体向图像写入文本
imagettftext($src_image,$this->logo_text_size,$this->logo_angle,$logo_text_x,$logo_text_y,$logo_text_color,$this->logo_text_font,$this->logo_text);
}
//保存生成的图片为新的文件
if ($this->output_image_file){
switch ($this->get_type($this->output_image_file)){
case 'gif':$src_img=imagegif($src_image, $this->output_image_file); break;
case 'jpeg':$src_img=imagejpeg($src_image, $this->output_image_file, $this->jpeg_quality); break;
case 'png':$src_img=imagepng($src_image, $this->output_image_file); break;
default:$src_img=imagejpeg($src_image, $this->output_image_file, $this->jpeg_quality); break;
}
}
else
{ //在原来图片的基础上生成新的合成图片
if ($src_image_type = "jpg") $src_image_type="jpeg";
header("Content-type: image/{$src_image_type}");
switch ($src_image_type){
case 'gif':$src_img=imagepng($src_image); break;
case 'jpg':$src_img=imagejpeg($src_image, "", $this->jpeg_quality);break;
case 'png':$src_img=imagepng($src_image);break;
default:$src_img=imagejpeg($src_image, "", $this->jpeg_quality);break;
}
}
imagedestroy($src_image);
}
//根据文件名和类型创建图片
function createImage($type,$img_name){
if (!$type){
$type = $this->get_type($img_name);
}
switch ($type){
case 'gif':
if (function_exists('imagecreatefromgif'))
$tmp_img=@imagecreatefromgif($img_name);
break;
case 'jpg':
$tmp_img=imagecreatefromjpeg($img_name);
break;
case 'png':
$tmp_img=imagecreatefrompng($img_name);
break;
default:
$tmp_img=imagecreatefromstring($img_name);
break;
}
return $tmp_img;
}
//根据源图像的长、宽，位置代码，水印图片id来生成把水印放置到源图像中的位置
function getPos($sourcefile_width,$sourcefile_height,$pos,$logo_image=""){
if ($logo_image){
$insertfile_width = imagesx($logo_image);
$insertfile_height = imagesy($logo_image);
}else {
$lineCount = explode("\r\n",$this->logo_text);
$fontSize = imagettfbbox($this->logo_text_size,$this->logo_text_angle,$this->logo_text_font,$this->logo_text);
$insertfile_width = $fontSize - $fontSize;
$insertfile_height = count($lineCount)*($fontSize - $fontSize);
}
switch ($pos){
case 1://顶部居左
$dest_x = 0;
if ($this->logo_text){
$dest_y = $insertfile_height;
}else{
$dest_y = 0;
}
break;
case 2://顶部居中
$dest_x = ( ( $sourcefile_width - $insertfile_width ) / 2 );
if ($this->logo_text){
$dest_y = $insertfile_height;
}else{
$dest_y = 0;
}
break;
case 3://顶部居右
$dest_x = $sourcefile_width - $insertfile_width;
if ($this->logo_text){
$dest_y = $insertfile_height;
}else{
$dest_y = 0;
}
break;
case 4://底部居左
$dest_x = 0;
$dest_y = $sourcefile_height - $insertfile_height;
break;
case 5://底部居中
$dest_x = ( ( $sourcefile_width - $insertfile_width ) / 2 );
$dest_y = $sourcefile_height - $insertfile_height;
break;
case 6://底部居右
$dest_x = $sourcefile_width - $insertfile_width;
$dest_y = $sourcefile_height - $insertfile_height;
break;
case 7://中间居左
$dest_x = 0;
$dest_y = ( $sourcefile_height / 2 ) - ( $insertfile_height / 2 );
break;
case 8://居中
$dest_x = ( $sourcefile_width / 2 ) - ( $insertfile_width / 2 );
$dest_y = ( $sourcefile_height / 2 ) - ( $insertfile_height / 2 );
break;
case 9://中间居右
$dest_x = $sourcefile_width - $insertfile_width;
$dest_y = ( $sourcefile_height / 2 ) - ( $insertfile_height / 2 );
break;
default://底部居右
$dest_x = $sourcefile_width - $insertfile_width;
$dest_y = $sourcefile_height - $insertfile_height;
break;
}
return array("dest_x"=>$dest_x,"dest_y"=>$dest_y);
}
//获取图片的格式，主要包括jpg,png和gif
function get_type($img_name){
$name_array = explode(".",$img_name);
if (preg_match("/\.(gif|jpg|jpeg|png)$/", $img_name, $matches)){
$type = strtolower($matches);
}else{
$type = "string";
}
return $type;
}
//指定的文字转换为UTF-8格式，使用gb2312保证中文的正常显示
function gb2utf8($gb){
if(!trim($gb))
return $gb;
$filename="./gb2312.txt";
$tmp=file($filename);
$codetable=array();
while(list($key,$value)=each($tmp))
$codetable=substr($value,7,6);
$utf8="";
while($gb){
if (ord(substr($gb,0,1))>127){
$tthis=substr($gb,0,2);
$gb=substr($gb,2,strlen($gb)-2);
$utf8.=$this->u2utf8(hexdec($codetable));
}else{
$tthis=substr($gb,0,1);
$gb=substr($gb,1,strlen($gb)-1);
$utf8.=$this->u2utf8($tthis);
}
}
return $utf8;
}
//转换为UTF8编码
function u2utf8($c){
$str="";
if ($c < 0x80){
$str.=$c;
}else if ($c < 0x800){
$str.=chr(0xC0 | $c>>6);
$str.=chr(0x80 | $c & 0x3F);
}else if ($c < 0x10000){
$str.=chr(0xE0 | $c>>12);
$str.=chr(0x80 | $c>>6 & 0x3F);
$str.=chr(0x80 | $c & 0x3F);
}else if ($c < 0x200000){
$str.=chr(0xF0 | $c>>18);
$str.=chr(0x80 | $c>>12 & 0x3F);
$str.=chr(0x80 | $c>>6 & 0x3F);
$str.=chr(0x80 | $c & 0x3F);
}
return $str;
}
}
?>
<?php
include_once("imagelogo.class.php");
$imglogo = new imagelogo();
$imglogo->logo_text = "大家好,phpbook";
$imglogo->logo_text_font = "./SIMLI.TTF";、//字体
$imglogo->create("./scene.jpg");
?>
<?php
include_once("imagelogo.class.php");
$imglogo = new imagelogo();
$imglogo->logo_text = "大家好,phpbook";
$imglogo->logo_text_font = "./SIMLI.TTF";
$imglogo->output_image_file ="./sd.jpg";
$imglogo->create("./scene.jpg");
?>
示例代码4：
<?php
/*-------------------------------------------------------------
**描述：这是用于给指定图片加底部水印（不占用图片显示区域）的自定义类，需创建对象调用
**创建：2007-10-09
**更新：2007-10-09
**说明：1、需要gd库支持，需要iconv支持（php5已经包含不用加载）
2、只适合三种类型的图片，jpg/jpeg/gif/png，其它类型不处理
3、注意图片所在目录的属性必须可写
4、调用范例：
$objImg = new MyWaterDownChinese();
$objImg->Path = "images/";
$objImg->FileName = "1.jpg";
$objImg->Text = "HAHAKONGJIANHTTP://HI.BAIDU.COM/LYSONCN";
$objImg->Font = "./font/simhei.ttf";
$objImg->Run();
**成员函数：
----------------------------------------------------------------*/
class MyWaterDownChinese{
var $Path = "./"; //图片所在目录相对于调用此类的页面的相对路径
var $FileName = ""; //图片的名字，如“1.jpg”
var $Text = ""; //图片要加上的水印文字，支持中文
var $TextColor = "#ffffff"; //文字的颜色，gif图片时，字体颜色只能为黑色
var $TextBgColor = "#000000"; //文字的背景条的颜色
var $Font = "c://windows//fonts//simhei.ttf"; //字体的存放目录，相对路径
var $OverFlag = true; //是否要覆盖原图，默认为覆盖，不覆盖时，自动在原图文件名后+"_water_down"，如“1.jpg”=> "1_water_down.jpg"
var $BaseWidth = 200; //图片的宽度至少要>=200，才会加上水印文字。
//------------------------------------------------------------------
//功能：类的构造函数(php5.0以上的形式)
//参数：无
//返回：无
function __construct(){;}
//------------------------------------------------------------------
//功能：类的析构函数(php5.0以上的形式)
//参数：无
//返回：无
function __destruct(){;}
//------------------------------------------------------------------
//------------------------------------
//功能：对象运行函数，给图片加上水印
//参数：无
//返回：无
function Run()
{
if($this->FileName == "" || $this->Text == "")
return;
//检测是否安装GD库
if(false == function_exists("gd_info"))
{
echo "系统没有安装GD库，不能给图片加水印.";
return;
}
//设置输入、输出图片路径名
$arr_in_name = explode(".",$this->FileName);
//
$inImg = $this->Path.$this->FileName;
$outImg = $inImg;
$tmpImg = $this->Path.$arr_in_name."_tmp.".$arr_in_name; //临时处理的图片，很重要
if(!$this->OverFlag)
$outImg = $this->Path.$arr_in_name."_water_down.".$arr_in_name;
//检测图片是否存在
if(!file_exists($inImg))
return ;
//获得图片的属性
$groundImageType = @getimagesize($inImg);
$imgWidth = $groundImageType;
$imgHeight = $groundImageType;
$imgType = $groundImageType;
if($imgWidth < $this->BaseWidth) //小于基本宽度，不处理
return;
//图片不是jpg/jpeg/gif/png时，不处理
switch($imgType)
{
case 1:
$image = imagecreatefromgif($inImg);
$this->TextBgColor = "#ffffff"; //gif图片字体只能为黑，所以背景颜色就设置为白色
break;
case 2:
$image = imagecreatefromjpeg($inImg);
break;
case 3:
$image = imagecreatefrompng($inImg);
break;
default:
return;
break;
}
//创建颜色
$color = @imagecolorallocate($image,hexdec(substr($this->TextColor,1,2)),hexdec(substr($this->TextColor,3,2)),hexdec(substr($this->TextColor,5,2))); //文字颜色
//生成一个空的图片，它的高度在底部增加水印高度
$newHeight = $imgHeight+20;
$objTmpImg = @imagecreatetruecolor($imgWidth,$newHeight);
$colorBg = @imagecolorallocate($objTmpImg,hexdec(substr($this->TextBgColor,1,2)),hexdec(substr($this->TextBgColor,3,2)),hexdec(substr($this->TextBgColor,5,2))); //背景颜色
//填充图片的背景颜色
@imagefill ($objTmpImg,0,0,$colorBg);
//把原图copy到临时图片中
@imagecopy($objTmpImg,$image,0,0,0,0,$imgWidth,$imgHeight);
//创建要写入的水印文字对象
$objText = $this->createText($this->Text);
//计算要写入的水印文字的位置
$x = 5;
$y = $newHeight-5;
//写入文字水印
@imagettftext($objTmpImg,10,0,$x,$y,$color,$this->Font,$objText);
//生成新的图片，临时图片
switch($imgType)
{
case 1:
imagegif($objTmpImg,$tmpImg);
break;
case 2:
imagejpeg($objTmpImg,$tmpImg);
break;
case 3:
imagepng($objTmpImg,$tmpImg);
break;
default:
return;
break;
}
//释放资源
@imagedestroy($objTmpImg);
@imagedestroy($image);
//重新命名文件
if($this->OverFlag)
{
//覆盖原图
@unlink($inImg);
@rename($tmpImg,$outImg);
}
else
{
//不覆盖原图
@rename($tmpImg,$outImg);
}
}
//--------------------------------------
//功能：创建水印文字对象
//参数：无
//返回：创建的水印文字对象
function createText($instring)
{
$outstring="";
$max=strlen($instring);
for($i=0;$i<$max;$i++)
{
$h=ord($instring[$i]);
if($h>=160 && $i<$max-1)
{
$outstring .= "&#".base_convert(bin2hex(iconv("gb2312","ucs-2",substr($instring,$i,2))),16,10).";";
$i++;
}
else
{
$outstring .= $instring[$i];
}
}
return $outstring;
}
}//class
?>
示例代码5：
<?php
/*
图片处理函数功能：缩放、剪切、相框、水印、锐化、旋转、翻转、透明度、反色
处理并保存历史记录的思路：当有图片有改动时自动生成一张新图片，命名方式可以考虑在原图片的基础上加上步骤，例如：图片名称+__第几步
*/
class picture
{
var $PICTURE_URL;//要处理的图片
var $DEST_URL="temp__01.jpg";//生成目标图片位置
var $PICTURE_CREATE;//要创建的图片
var $TURE_COLOR;//新建一个真彩图象
var $PICTURE_WIDTH;//原图片宽度
var $PICTURE_HEIGHT;//原图片高度
/*
水印的类型，默认的为水印文字
*/
var $MARK_TYPE=1;
var $WORD;//经过UTF-8后的文字
var $WORD_X;//文字横坐标
var $WORD_Y;//文字纵坐标
var $FONT_TYPE;//字体类型
var $FONT_SIZE="12";//字体大小
var $FONT_WORD;//文字
var $ANGLE=0;//文字的角度，默认为0
var $FONT_COLOR="#000000";//文字颜色
var $FONT_PATH="font/simkai.ttf";//字体库，默认为宋体
var $FORCE_URL;//水印图片
var $FORCE_X=0;//水印横坐标
var $FORCE_Y=0;//水印纵坐标
var $FORCE_START_X=0;//切起水印的图片横坐标
var $FORCE_START_Y=0;//切起水印的图片纵坐标
var $PICTURE_TYPE;//图片类型
var $PICTURE_MIME;//输出的头部
/*
缩放比例为1的话就按缩放高度和宽度缩放
*/
var $ZOOM=1;//缩放类型
var $ZOOM_MULTIPLE;//缩放比例
var $ZOOM_WIDTH;//缩放宽度
var $ZOOM_HEIGHT;//缩放高度
/*
裁切，按比例和固定长度、宽度
*/
var $CUT_TYPE=1;//裁切类型
var $CUT_X=0;//裁切的横坐标
var $CUT_Y=0;//裁切的纵坐标
var $CUT_;//裁切的宽度
var $CUT_HEIGHT=100;//裁切的高度
/*
锐化
*/
var $SHARP="7.0";//锐化程度
/*
透明度处理
*/
var $ALPHA='100';//透明度在0-127之间
var $ALPHA_X="90";
var $ALPHA_Y="50";
/*
任意角度旋转
*/
var $CIRCUMROTATE="90.0";//注意，必须为浮点数
/*
出错信息
*/
var $ERROR=array(
'unalviable'=>'没有找到相关图片!'
);
/*
构造函数：函数初始化
*/
function __construct($PICTURE_URL)
{
$this->get_info($PICTURE_URL);
}
function get_info($PICTURE_URL)
{
/*
处理原图片的信息,先检测图片是否存在,不存在则给出相应的信息
*/
@$SIZE=getimagesize($PICTURE_URL);
if(!$SIZE)
{
exit($this->ERROR['unalviable']);
}
//得到原图片的信息类型、宽度、高度
$this->PICTURE_MIME=$SIZE['mime'];
$this->PICTURE_;
$this->PICTURE_HEIGHT=$SIZE;
//创建图片
switch($SIZE)
{
case 1:
$this->PICTURE_CREATE=imagecreatefromgif($PICTURE_URL);
$this->PICTURE_TYPE="imagejpeg";
$this->PICTURE_EXT="jpg";
break;
case 2:
$this->PICTURE_CREATE=imagecreatefromjpeg($PICTURE_URL);
$this->PICTURE_TYPE="imagegif";
$this->PICTURE_EXT="gif";
break;
case 3:
$this->PICTURE_CREATE=imagecreatefrompng($PICTURE_URL);
$this->PICTURE_TYPE="imagepng";
$this->PICTURE_EXT="png";
break;
}
/*
文字颜色转换16进制转换成10进制
*/
preg_match_all("/(){2,2}/i",$this->FONT_COLOR,$MATCHES);
if(count($MATCHES)==3)
{
$this->RED=hexdec($MATCHES);
$this->GREEN=hexdec($MATCHES);
$this->BLUE=hexdec($MATCHES);
}
}
#end of __construct
/*
将16进制的颜色转换成10进制的（R，G，B）
*/
function hex2dec()
{
preg_match_all("/(){2,2}/i",$this->FONT_COLOR,$MATCHES);
if(count($MATCHES)==3)
{
$this->RED=hexdec($MATCHES);
$this->GREEN=hexdec($MATCHES);
$this->BLUE=hexdec($MATCHES);
}
}
//缩放类型
function zoom_type($ZOOM_TYPE)
{
$this->ZOOM=$ZOOM_TYPE;
}
//对图片进行缩放,如果不指定高度和宽度就进行缩放
function zoom()
{
//缩放的大小
if($this->ZOOM==0)
{
$this->ZOOM_;gt;PICTURE_WIDTH * $this->ZOOM_MULTIPLE;
$this->ZOOM_HEIGHT=$this->PICTURE_HEIGHT * $this->ZOOM_MULTIPLE;
}
//新建一个真彩图象
$this->TRUE_COLOR=imagecreatetruecolor($this->ZOOM_WIDTH,$this->ZOOM_HEIGHT);
$WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);
imagefilledrectangle($this->TRUE_COLOR,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$WHITE);
imagecopyresized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->ZOOM_WIDTH,$this->ZOOM_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
}
#end of zoom
//裁切图片,按坐标或自动
function cut()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->CUT_WIDTH,$this->CUT_WIDTH);
imagecopy($this->TRUE_COLOR,$this->PICTURE_CREATE, 0, 0, $this->CUT_X, $this->CUT_Y,$this->CUT_WIDTH,$this->CUT_HEIGHT);
}
#end of cut
/*
在图片上放文字或图片
水印文字
*/
function _mark_text()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$this->WORD=mb_convert_encoding($this->FONT_WORD,'utf-8','gb2312');
/*
取得使用 TrueType 字体的文本的范围
*/
$TEMP = imagettfbbox($this->FONT_SIZE,0,$this->FONT_PATH,$this->WORD);
$WORD_LENGTH=strlen($this->WORD);
$WORD_WIDTH =$TEMP - $TEMP;
$WORD_HEIGHT =$TEMP - $TEMP;
/*
文字水印的默认位置为右下角
*/
if($this->WORD_X=="")
{
$this->WORD_X=$this->PICTURE_WIDTH-$WORD_WIDTH;
}
if($this->WORD_Y=="")
{
$this->WORD_Y=$this->PICTURE_HEIGHT-$WORD_HEIGHT;
}
imagesettile($this->TRUE_COLOR,$this->PICTURE_CREATE);
imagefilledrectangle($this->TRUE_COLOR,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,IMG_COLOR_TILED);
$TEXT2=imagecolorallocate($this->TRUE_COLOR,$this->RED,$this->GREEN,$this->Blue);
imagettftext($this->TRUE_COLOR,$this->FONT_SIZE,$this->ANGLE,$this->WORD_X,$this->WORD_Y,$TEXT2,$this->FONT_PATH,$this->WORD);
}
/*
水印图片
*/
function _mark_picture()
{
/*
获取水印图片的信息
*/
@$SIZE=getimagesize($this->FORCE_URL);
if(!$SIZE)
{
exit($this->ERROR['unalviable']);
}
$FORCE_PICTURE_;
$FORCE_PICTURE_HEIGHT=$SIZE;
//创建水印图片
switch($SIZE)
{
case 1:
$FORCE_PICTURE_CREATE=imagecreatefromgif($this->FORCE_URL);
$FORCE_PICTURE_TYPE="gif";
break;
case 2:
$FORCE_PICTURE_CREATE=imagecreatefromjpeg($this->FORCE_URL);
$FORCE_PICTURE_TYPE="jpg";
break;
case 3:
$FORCE_PICTURE_CREATE=imagecreatefrompng($this->FORCE_URL);
$FORCE_PICTURE_TYPE="png";
break;
}
/*
判断水印图片的大小，并生成目标图片的大小，如果水印比图片大，则生成图片大小为水印图片的大小。否则生成的图片大小为原图片大小。
*/
$this->NEW_PICTURE=$this->PICTURE_CREATE;
if($FORCE_PICTURE_WIDTH>$this->PICTURE_WIDTH)
{
$CREATE_;gt;FORCE_START_X;
}
else
{
$CREATE_;gt;PICTURE_WIDTH;
}
if($FORCE_PICTURE_HEIGHT>$this->PICTURE_HEIGHT)
{
$CREATE_HEIGHT=$FORCE_PICTURE_HEIGHT-$this->FORCE_START_Y;
}
else
{
$CREATE_HEIGHT=$this->PICTURE_HEIGHT;
}
/*
创建一个画布
*/
$NEW_PICTURE_CREATE=imagecreatetruecolor($CREATE_WIDTH,$CREATE_HEIGHT);
$WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);
/*
将背景图拷贝到画布中
*/
imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
/*
将目标图片拷贝到背景图片上
*/
imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this->FORCE_X, $this->FORCE_Y, $this->FORCE_START_X, $this->FORCE_START_Y,$FORCE_PICTURE_WIDTH,$FORCE_PICTURE_HEIGHT);
$this->TRUE_COLOR=$NEW_PICTURE_CREATE;
}
#end of mark
function alpha_()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$rgb="#CDCDCD";
$tran_color="#000000";
for($j=0;$j<=$this->PICTURE_HEIGHT-1;$j++)
{
for ($i=0;$i<=$this->PICTURE_WIDTH-1;$i++)
{
$rgb = imagecolorat($this->PICTURE_CREATE,$i,$j);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$now_color=imagecolorallocate($this->PICTURE_CREATE,$r,$g,$b);
if ($now_color==$tran_color)
{
continue;
}
else
{
$color=imagecolorallocatealpha($this->PICTURE_CREATE,$r,$g,$b,$ALPHA);
imagesetpixel($this->PICTURE_CREATE,$ALPHA_X+$i,$ALPHA_Y+$j,$color);
}
$this->TRUE_COLOR=$this->PICTURE_CREATE;
}
}
}
/*
图片旋转:
沿y轴旋转
*/
function turn_y()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
for ($x = 0; $x < $this->PICTURE_WIDTH; $x++)
{
imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, $this->PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this->PICTURE_HEIGHT);
}
}
/*
沿X轴旋转
*/
function turn_x()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
for ($y = 0; $y < $this->PICTURE_HEIGHT; $y++)
{
imagecopy($this->TRUE_COLOR, $this->PICTURE_CREATE, 0, $this->PICTURE_HEIGHT - $y - 1, 0, $y, $this->PICTURE_WIDTH, 1);
}
}
/*
任意角度旋转
*/
function turn()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
imageCopyResized($this->TRUE_COLOR,$this->PICTURE_CREATE,0,0,0,0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$WHITE=imagecolorallocate($this->TRUE_COLOR,255,255,255);
$this->TRUE_COLOR=imagerotate ($this->TRUE_COLOR, $this->CIRCUMROTATE, $WHITE);
}
/*
图片锐化
*/
function sharp()
{
$this->TRUE_COLOR=imagecreatetruecolor($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$cnt=0;
for ($x=0; $x<$this->PICTURE_WIDTH; $x++)
{
for ($y=0; $y<$this->PICTURE_HEIGHT; $y++)
{
$src_clr1 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x-1, $y-1));
$src_clr2 = imagecolorsforindex($this->TRUE_COLOR, imagecolorat($this->PICTURE_CREATE, $x, $y));
$r = intval($src_clr2["red"]+$this->SHARP*($src_clr2["red"]-$src_clr1["red"]));
$g = intval($src_clr2["green"]+$this->SHARP*($src_clr2["green"]-$src_clr1["green"]));
$b = intval($src_clr2["blue"]+$this->SHARP*($src_clr2["blue"]-$src_clr1["blue"]));
$r = min(255, max($r, 0));
$g = min(255, max($g, 0));
$b = min(255, max($b, 0));
if (($DST_CLR=imagecolorexact($this->PICTURE_CREATE, $r, $g, $b))==-1)
$DST_CLR = imagecolorallocate($this->PICTURE_CREATE, $r, $g, $b);
$cnt++;
if ($DST_CLR==-1) die("color allocate faile at $x, $y ($cnt).");
imagesetpixel($this->TRUE_COLOR, $x, $y, $DST_CLR);
}
}
}
/*
将图片反色处理??
*/
function return_color()
{
/*
创建一个画布
*/
$NEW_PICTURE_CREATE=imagecreate($this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$WHITE=imagecolorallocate($NEW_PICTURE_CREATE,255,255,255);
/*
将背景图拷贝到画布中
*/
imagecopy($NEW_PICTURE_CREATE, $this->PICTURE_CREATE, 0, 0, 0, 0,$this->PICTURE_WIDTH,$this->PICTURE_HEIGHT);
$this->TRUE_COLOR=$NEW_PICTURE_CREATE;
}
/*
生成目标图片并显示
*/
function show()
{
// 判断浏览器,若是IE就不发送头
if(isset($_SERVER['HTTP_USER_AGENT']))
{
$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
if(!preg_match('/^.*MSIE.*\)$/i',$ua))
{
header("Content-type:$this->PICTURE_MIME");
}
}
$OUT=$this->PICTURE_TYPE;
$OUT($this->TRUE_COLOR);
}
/*
生成目标图片并保存
*/
function save_picture()
{
// 以 JPEG 格式将图像输出到浏览器或文件
$OUT=$this->PICTURE_TYPE;
if(function_exists($OUT))
{
// 判断浏览器,若是IE就不发送头
if(isset($_SERVER['HTTP_USER_AGENT']))
{
$ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
if(!preg_match('/^.*MSIE.*\)$/i',$ua))
{
header("Content-type:$this->PICTURE_MIME");
}
}
if(!$this->TRUE_COLOR)
{
exit($this->ERROR['unavilable']);
}
else
{
$OUT($this->TRUE_COLOR,$this->DEST_URL);
$OUT($this->TRUE_COLOR);
}
}
}
/*
析构函数：释放图片
*/
function __destruct()
{
/*释放图片*/
imagedestroy($this->TRUE_COLOR);
imagedestroy($this->PICTURE_CREATE);
}
#end of class
}
?>
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