cszx
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UID 92907
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积分 39
帖子 22
金钱 39 喜悦币
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阅读权限 10
注册 2007-5-12
状态 离线
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无GD PNG图片生成对象
<?php
/*
* PNG图片接口文件
*
* 这不是一个免费程序
*
* @开发时间：20080109
* @开发者：张旭 <[email]cszx2007@gmail.com[/email]>
* @版本：1.0
* @版权：张旭持有
*/
interface zxpngInterface
{
/*生成图片(图片宽度, 图片高度, 图片内容)*/
function build($width, $height, $content);
}
/*
* PNG图片生成程序
*
* 这不是一个免费程序
*
* @开发时间：2008年1月8日 18:14
* @开发者：zx
* @版本：1.0
* @版权：张旭持有
*/
class zxpng implements zxpngInterface
{
private $kernel;
/*
* 库主控文件
*
* @var kernel
* @access private
*/
private $status;
/*
* 处理状态说明
*
* @var bool
* @access private
*/
private $info;
/*
* png图片信息集合
*
* @var array
* @access private
*/
public function __construct($kernel)
{
$this->kernel = &$kernel;
}
/*生成图片(图片宽度, 图片高度, 图片内容)*/
public function build($width, $height, $content)
{
self::createBackground($width, $height);
$contentLength = strlen($content);
$table = self::table( );
$space = 12;
for($i = 0; $i < $contentLength; $i++)
{
self::draw($table[$content[$i]], $width, $height, $space);
$space += 12;
}
self::crcTable( );
$data = self::headTag( );
$data .= self::ihdr($width, $height);
$data .= self::idat($width, $height);
$data .= self::iend( );
return($data);
}
/*创建背景颜色(宽度, 高度)*/
private function createBackground($width, $height)
{
$rnd1 = mt_rand(90, 0);
$rnd2 = mt_rand(90, 0);
$rnd3 = mt_rand(90, 0);
$data = '';
for($i = 0; $i < $height; $i++)
{
for($j = 0; $j < $width; $j++)
{
$data .= chr((($i * $j) + $width + $height + $rnd1) & 255) . chr($rnd2 & 255) . chr($rnd3 & 255);
}
}
return(self::save('img', $data));
}
/*绘制像素点(x, y, 宽度, 高度, r, g, b, 像素大小)*/
private function drawPixel($x, $y, $width, $height, $r=0, $g=0, $b=0, $size=1)
{
$img = self::read('img');
$offset = 3 * ($width * $y + $x);
for($i = 0; $i < $size;)
{
$img[$offset + $i] = chr($r);
$i++;
$img[$offset + $i] = chr($g);
$i++;
$img[$offset + $i] = chr($b);
$i++;
}
return(self::save('img', $img));
}
/*绘制字符(字模, 宽度, 高度, 间隔)*/
private function draw($table, $width, $height, $space=16)
{
for($i = 0; $i < 16; $i++)
{
for($j = 0; $j < 8; $j++)
{
if(($table[$i] >> (7 - $j)) & 0x01)
{
self::drawPixel($space + $j, $i + 2, $width, $height, 255, 255, 255, 1);
}
}
}
return(true);
}
/*ascii码字模表*/
private function table( )
{
$ascii = array
(
'0' => array(0x00,0x00,0x38,0x6C,0xC6,0xC6,0xD6,0xD6,0xC6,0xC6,0x6C,0x38,0x00,0x00,0x00,0x00),
'1' => array(0x00,0x00,0x18,0x38,0x78,0x18,0x18,0x18,0x18,0x18,0x18,0x7E,0x00,0x00,0x00,0x00),
'2' => array(0x00,0x00,0x7C,0xC6,0x06,0x0C,0x18,0x30,0x60,0xC0,0xC6,0xFE,0x00,0x00,0x00,0x00),
'3' => array(0x00,0x00,0x7C,0xC6,0x06,0x06,0x3C,0x06,0x06,0x06,0xC6,0x7C,0x00,0x00,0x00,0x00),
'4' => array(0x00,0x00,0x0C,0x1C,0x3C,0x6C,0xCC,0xFE,0x0C,0x0C,0x0C,0x1E,0x00,0x00,0x00,0x00),
'5' => array(0x00,0x00,0xFE,0xC0,0xC0,0xC0,0xFC,0x06,0x06,0x06,0xC6,0x7C,0x00,0x00,0x00,0x00),
'6' => array(0x00,0x00,0x38,0x60,0xC0,0xC0,0xFC,0xC6,0xC6,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'7' => array(0x00,0x00,0xFE,0xC6,0x06,0x06,0x0C,0x18,0x30,0x30,0x30,0x30,0x00,0x00,0x00,0x00),
'8' => array(0x00,0x00,0x7C,0xC6,0xC6,0xC6,0x7C,0xC6,0xC6,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'9' => array(0x00,0x00,0x7C,0xC6,0xC6,0xC6,0x7E,0x06,0x06,0x06,0x0C,0x78,0x00,0x00,0x00,0x00),
'A' => array(0x00,0x00,0x10,0x38,0x6C,0xC6,0xC6,0xFE,0xC6,0xC6,0xC6,0xC6,0x00,0x00,0x00,0x00),
'B' => array(0x00,0x00,0xFC,0x66,0x66,0x66,0x7C,0x66,0x66,0x66,0x66,0xFC,0x00,0x00,0x00,0x00),
'C' => array(0x00,0x00,0x3C,0x66,0xC2,0xC0,0xC0,0xC0,0xC0,0xC2,0x66,0x3C,0x00,0x00,0x00,0x00),
'D' => array(0x00,0x00,0xF8,0x6C,0x66,0x66,0x66,0x66,0x66,0x66,0x6C,0xF8,0x00,0x00,0x00,0x00),
'E' => array(0x00,0x00,0xFE,0x66,0x62,0x68,0x78,0x68,0x60,0x62,0x66,0xFE,0x00,0x00,0x00,0x00),
'F' => array(0x00,0x00,0xFE,0x66,0x62,0x68,0x78,0x68,0x60,0x60,0x60,0xF0,0x00,0x00,0x00,0x00),
'G' => array(0x00,0x00,0x3C,0x66,0xC2,0xC0,0xC0,0xDE,0xC6,0xC6,0x66,0x3A,0x00,0x00,0x00,0x00),
'H' => array(0x00,0x00,0xC6,0xC6,0xC6,0xC6,0xFE,0xC6,0xC6,0xC6,0xC6,0xC6,0x00,0x00,0x00,0x00),
'I' => array(0x00,0x00,0x3C,0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x3C,0x00,0x00,0x00,0x00),
'J' => array(0x00,0x00,0x1E,0x0C,0x0C,0x0C,0x0C,0x0C,0xCC,0xCC,0xCC,0x78,0x00,0x00,0x00,0x00),
'K' => array(0x00,0x00,0xE6,0x66,0x66,0x6C,0x78,0x78,0x6C,0x66,0x66,0xE6,0x00,0x00,0x00,0x00),
'L' => array(0x00,0x00,0xF0,0x60,0x60,0x60,0x60,0x60,0x60,0x62,0x66,0xFE,0x00,0x00,0x00,0x00),
'M' => array(0x00,0x00,0xC6,0xEE,0xFE,0xFE,0xD6,0xC6,0xC6,0xC6,0xC6,0xC6,0x00,0x00,0x00,0x00),
'N' => array(0x00,0x00,0xC6,0xE6,0xF6,0xFE,0xDE,0xCE,0xC6,0xC6,0xC6,0xC6,0x00,0x00,0x00,0x00),
'O' => array(0x00,0x00,0x7C,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'P' => array(0x00,0x00,0xFC,0x66,0x66,0x66,0x7C,0x60,0x60,0x60,0x60,0xF0,0x00,0x00,0x00,0x00),
'Q' => array(0x00,0x00,0x7C,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xD6,0xDE,0x7C,0x0C,0x0E,0x00,0x00),
'R' => array(0x00,0x00,0xFC,0x66,0x66,0x66,0x7C,0x6C,0x66,0x66,0x66,0xE6,0x00,0x00,0x00,0x00),
'S' => array(0x00,0x00,0x7C,0xC6,0xC6,0x60,0x38,0x0C,0x06,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'T' => array(0x00,0x00,0x7E,0x7E,0x5A,0x18,0x18,0x18,0x18,0x18,0x18,0x3C,0x00,0x00,0x00,0x00),
'U' => array(0x00,0x00,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'V' => array(0x00,0x00,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0x6C,0x38,0x10,0x00,0x00,0x00,0x00),
'W' => array(0x00,0x00,0xC6,0xC6,0xC6,0xC6,0xD6,0xD6,0xD6,0xFE,0xEE,0x6C,0x00,0x00,0x00,0x00),
'X' => array(0x00,0x00,0xC6,0xC6,0x6C,0x7C,0x38,0x38,0x7C,0x6C,0xC6,0xC6,0x00,0x00,0x00,0x00),
'Y' => array(0x00,0x00,0x66,0x66,0x66,0x66,0x3C,0x18,0x18,0x18,0x18,0x3C,0x00,0x00,0x00,0x00),
'Z' => array(0x00,0x00,0xFE,0xC6,0x86,0x0C,0x18,0x30,0x60,0xC2,0xC6,0xFE,0x00,0x00,0x00,0x00),
'a' => array(0x00,0x00,0x00,0x00,0x00,0x78,0x0C,0x7C,0xCC,0xCC,0xCC,0x76,0x00,0x00,0x00,0x00),
'b' => array(0x00,0x00,0xE0,0x60,0x60,0x78,0x6C,0x66,0x66,0x66,0x66,0x7C,0x00,0x00,0x00,0x00),
'c' => array(0x00,0x00,0x00,0x00,0x00,0x7C,0xC6,0xC0,0xC0,0xC0,0xC6,0x7C,0x00,0x00,0x00,0x00),
'd' => array(0x00,0x00,0x1C,0x0C,0x0C,0x3C,0x6C,0xCC,0xCC,0xCC,0xCC,0x76,0x00,0x00,0x00,0x00),
'e' => array(0x00,0x00,0x00,0x00,0x00,0x7C,0xC6,0xFE,0xC0,0xC0,0xC6,0x7C,0x00,0x00,0x00,0x00),
'f' => array(0x00,0x00,0x38,0x6C,0x64,0x60,0xF0,0x60,0x60,0x60,0x60,0xF0,0x00,0x00,0x00,0x00),
'g' => array(0x00,0x00,0x00,0x00,0x00,0x76,0xCC,0xCC,0xCC,0xCC,0xCC,0x7C,0x0C,0xCC,0x78,0x00),
'h' => array(0x00,0x00,0xE0,0x60,0x60,0x6C,0x76,0x66,0x66,0x66,0x66,0xE6,0x00,0x00,0x00,0x00),
'i' => array(0x00,0x00,0x18,0x18,0x00,0x38,0x18,0x18,0x18,0x18,0x18,0x3C,0x00,0x00,0x00,0x00),
'j' => array(0x00,0x00,0x06,0x06,0x00,0x0E,0x06,0x06,0x06,0x06,0x06,0x06,0x66,0x66,0x3C,0x00),
'k' => array(0x00,0x00,0xE0,0x60,0x60,0x66,0x6C,0x78,0x78,0x6C,0x66,0xE6,0x00,0x00,0x00,0x00),
'l' => array(0x00,0x00,0x38,0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x3C,0x00,0x00,0x00,0x00),
'm' => array(0x00,0x00,0x00,0x00,0x00,0xEC,0xFE,0xD6,0xD6,0xD6,0xD6,0xC6,0x00,0x00,0x00,0x00),
'n' => array(0x00,0x00,0x00,0x00,0x00,0xDC,0x66,0x66,0x66,0x66,0x66,0x66,0x00,0x00,0x00,0x00),
'o' => array(0x00,0x00,0x00,0x00,0x00,0x7C,0xC6,0xC6,0xC6,0xC6,0xC6,0x7C,0x00,0x00,0x00,0x00),
'p' => array(0x00,0x00,0x00,0x00,0x00,0xDC,0x66,0x66,0x66,0x66,0x66,0x7C,0x60,0x60,0xF0,0x00),
'q' => array(0x00,0x00,0x00,0x00,0x00,0x76,0xCC,0xCC,0xCC,0xCC,0xCC,0x7C,0x0C,0x0C,0x1E,0x00),
'r' => array(0x00,0x00,0x00,0x00,0x00,0xDC,0x76,0x66,0x60,0x60,0x60,0xF0,0x00,0x00,0x00,0x00),
's' => array(0x00,0x00,0x00,0x00,0x00,0x7C,0xC6,0x60,0x38,0x0C,0xC6,0x7C,0x00,0x00,0x00,0x00),
't' => array(0x00,0x00,0x10,0x30,0x30,0xFC,0x30,0x30,0x30,0x30,0x36,0x1C,0x00,0x00,0x00,0x00),
'u' => array(0x00,0x00,0x00,0x00,0x00,0xCC,0xCC,0xCC,0xCC,0xCC,0xCC,0x76,0x00,0x00,0x00,0x00),
'v' => array(0x00,0x00,0x00,0x00,0x00,0x66,0x66,0x66,0x66,0x66,0x3C,0x18,0x00,0x00,0x00,0x00),
'w' => array(0x00,0x00,0x00,0x00,0x00,0xC6,0xC6,0xD6,0xD6,0xD6,0xFE,0x6C,0x00,0x00,0x00,0x00),
'x' => array(0x00,0x00,0x00,0x00,0x00,0xC6,0x6C,0x38,0x38,0x38,0x6C,0xC6,0x00,0x00,0x00,0x00),
'y' => array(0x00,0x00,0x00,0x00,0x00,0xC6,0xC6,0xC6,0xC6,0xC6,0xC6,0x7E,0x06,0x0C,0xF8,0x00),
'z' => array(0x00,0x00,0x00,0x00,0x00,0xFE,0xCC,0x18,0x30,0x60,0xC6,0xFE,0x00,0x00,0x00,0x00)
);
return($ascii);
}
/*创建CRC校验表*/
private function crcTable( )
{
$z = -306674912; // = 0xedb88320
for ($n = 0; $n < 256; $n++)
{
$c = $n;
for($k = 0; $k < 8; $k++)
{
$c = ($c & 1) ? $z ^ (($c >> 1) & 0x7fffffff) : ($c >> 1) & 0x7fffffff;
}
$crcTable[$n] = $c;
}
return(self::save('crcTable', $crcTable));
}
/*png图片文件头*/
private function headTag( )
{
return(pack("c*", 137, 80, 78, 71, 13, 10, 26, 10));
}
/*IHDR数据块信息(宽度, 高度)*/
private function ihdr($width, $height)
{
$body = pack("c*", ($width >> 24) & 255, ($width >> 16) & 255, ($width >> 8) & 255, $width & 255, ($height >> 24) & 255, ($height >> 16) & 255, ($height >> 8) & 255, $height & 255, self:: | |
