jpgraph.php

最近在做软交换时研究的一个软交换的东东

<?php
//=======================================================================
// File:	JPGRAPH.PHP
// Description:	PHP4 Graph Plotting library. Base module.
// Created: 	2001-01-08
// Author:	Johan Persson ([e-mail])
// Ver:		$Id: jpgraph.php 173 2005-03-13 20:34:07Z rcourtna $
//
// License:	This code is released under QPL 1.0
// Copyright (C) 2001,2002,2003,2004 Johan Persson Aditus Consulting
//========================================================================

require_once('jpg-config.inc');

// Version info
DEFINE('JPG_VERSION','1.17beta2');

// For internal use only
DEFINE("_JPG_DEBUG",false);
DEFINE("_FORCE_IMGTOFILE",false);
DEFINE("_FORCE_IMGDIR",'/tmp/jpgimg/');


//------------------------------------------------------------------------
// Automatic settings of path for cache and font directory
// if they have not been previously specified
//------------------------------------------------------------------------
if(USE_CACHE) {
    if (!defined('CACHE_DIR')) {
	if ( strstr( PHP_OS, 'WIN') ) {
	    if( empty($_SERVER['TEMP']) ) {
		die('JpGraph Error: No path specified for CACHE_DIR. Please specify CACHE_DIR manually in jpg-config.inc');
	    }
	    else {
		DEFINE('CACHE_DIR', $_SERVER['TEMP'] . '/');
	    }
	} else {
	    DEFINE('CACHE_DIR','/tmp/jpgraph_cache/');
	}
    }
}
elseif( !defined('CACHE_DIR') ) {
    DEFINE('CACHE_DIR', '');
}

if (!defined('TTF_DIR')) {
    if (strstr( PHP_OS, 'WIN') ) {
	$sroot = getenv('SystemRoot');
        if( empty($sroot) ) {
	    die('JpGraph Error: No path specified for TTF_DIR and path can not be determined automatically. Please specify TTF_DIR manually (in jpg-config.inc).');
        }
	else {
	  DEFINE('TTF_DIR', $sroot.'/fonts/');
        }
    } else {
	DEFINE('TTF_DIR','/usr/X11R6/lib/X11/fonts/truetype/');
    }
}

//------------------------------------------------------------------
// Constants which are used as parameters for the method calls
//------------------------------------------------------------------

// TTF Font families
DEFINE("FF_COURIER",10);
DEFINE("FF_VERDANA",11);
DEFINE("FF_TIMES",12);
DEFINE("FF_COMIC",14);
DEFINE("FF_ARIAL",15);
DEFINE("FF_GEORGIA",16);
DEFINE("FF_TREBUCHE",17);

// Gnome Vera font
// Available from http://www.gnome.org/fonts/
DEFINE("FF_VERA",19);
DEFINE("FF_VERAMONO",20);
DEFINE("FF_VERASERIF",21);

// Chinese font
DEFINE("FF_SIMSUN",30);
DEFINE("FF_CHINESE",31);
DEFINE("FF_BIG5",31);

// Japanese font
DEFINE("FF_MINCHO",40);
DEFINE("FF_PMINCHO",41);
DEFINE("FF_GOTHIC",42);
DEFINE("FF_PGOTHIC",43);

// Limits for TTF fonts
DEFINE('_FF_FIRST',10);
DEFINE('_FF_LAST',43);

// Older deprecated fonts 
DEFINE("FF_BOOK",91);    // Deprecated fonts from 1.9
DEFINE("FF_HANDWRT",92); // Deprecated fonts from 1.9

// TTF Font styles
DEFINE("FS_NORMAL",9001);
DEFINE("FS_BOLD",9002);
DEFINE("FS_ITALIC",9003);
DEFINE("FS_BOLDIT",9004);
DEFINE("FS_BOLDITALIC",9004);

//Definitions for internal font, new style
DEFINE("FF_FONT0",1);
DEFINE("FF_FONT1",2);
DEFINE("FF_FONT2",4);

// Tick density
DEFINE("TICKD_DENSE",1);
DEFINE("TICKD_NORMAL",2);
DEFINE("TICKD_SPARSE",3);
DEFINE("TICKD_VERYSPARSE",4);

// Side for ticks and labels. 
DEFINE("SIDE_LEFT",-1);
DEFINE("SIDE_RIGHT",1);
DEFINE("SIDE_DOWN",-1);
DEFINE("SIDE_BOTTOM",-1);
DEFINE("SIDE_UP",1);
DEFINE("SIDE_TOP",1);

// Legend type stacked vertical or horizontal
DEFINE("LEGEND_VERT",0);
DEFINE("LEGEND_HOR",1);

// Mark types for plot marks
DEFINE("MARK_SQUARE",1);
DEFINE("MARK_UTRIANGLE",2);
DEFINE("MARK_DTRIANGLE",3);
DEFINE("MARK_DIAMOND",4);
DEFINE("MARK_CIRCLE",5);
DEFINE("MARK_FILLEDCIRCLE",6);
DEFINE("MARK_CROSS",7);
DEFINE("MARK_STAR",8);
DEFINE("MARK_X",9);
DEFINE("MARK_LEFTTRIANGLE",10);
DEFINE("MARK_RIGHTTRIANGLE",11);
DEFINE("MARK_FLASH",12);
DEFINE("MARK_IMG",13);
DEFINE("MARK_FLAG1",14);
DEFINE("MARK_FLAG2",15);
DEFINE("MARK_FLAG3",16);
DEFINE("MARK_FLAG4",17);

// Builtin images
DEFINE("MARK_IMG_PUSHPIN",50);
DEFINE("MARK_IMG_SPUSHPIN",50);
DEFINE("MARK_IMG_LPUSHPIN",51);
DEFINE("MARK_IMG_DIAMOND",52);
DEFINE("MARK_IMG_SQUARE",53);
DEFINE("MARK_IMG_STAR",54);
DEFINE("MARK_IMG_BALL",55);
DEFINE("MARK_IMG_SBALL",55);
DEFINE("MARK_IMG_MBALL",56);
DEFINE("MARK_IMG_LBALL",57);
DEFINE("MARK_IMG_BEVEL",58);

// Inline defines
DEFINE("INLINE_YES",1);
DEFINE("INLINE_NO",0);

// Format for background images
DEFINE("BGIMG_FILLPLOT",1);
DEFINE("BGIMG_FILLFRAME",2);
DEFINE("BGIMG_COPY",3);
DEFINE("BGIMG_CENTER",4);

// Depth of objects
DEFINE("DEPTH_BACK",0);
DEFINE("DEPTH_FRONT",1);

// Direction
DEFINE("VERTICAL",1);
DEFINE("HORIZONTAL",0);


// Axis styles for scientific style axis
DEFINE('AXSTYLE_SIMPLE',1);
DEFINE('AXSTYLE_BOXIN',2);
DEFINE('AXSTYLE_BOXOUT',3);
DEFINE('AXSTYLE_YBOXIN',4);
DEFINE('AXSTYLE_YBOXOUT',5);

// Style for title backgrounds
DEFINE('TITLEBKG_STYLE1',1);
DEFINE('TITLEBKG_STYLE2',2);
DEFINE('TITLEBKG_STYLE3',3);
DEFINE('TITLEBKG_FRAME_NONE',0);
DEFINE('TITLEBKG_FRAME_FULL',1);
DEFINE('TITLEBKG_FRAME_BOTTOM',2);
DEFINE('TITLEBKG_FRAME_BEVEL',3);
DEFINE('TITLEBKG_FILLSTYLE_HSTRIPED',1);
DEFINE('TITLEBKG_FILLSTYLE_VSTRIPED',2);
DEFINE('TITLEBKG_FILLSTYLE_SOLID',3);

// Style for background gradient fills
DEFINE('BGRAD_FRAME',1);
DEFINE('BGRAD_MARGIN',2);
DEFINE('BGRAD_PLOT',3);

// Width of tab titles
DEFINE('TABTITLE_WIDTHFIT',0);
DEFINE('TABTITLE_WIDTHFULL',-1);

// Defines for 3D skew directions
DEFINE('SKEW3D_UP',0);
DEFINE('SKEW3D_DOWN',1);
DEFINE('SKEW3D_LEFT',2);
DEFINE('SKEW3D_RIGHT',3);



//
// Get hold of gradient class (In Version 2.x)
// A client of the library has to manually include this
//
require_once 'jpgraph_gradient.php';



//
// A wrapper class that is used to access the specified error object
// (to hide the global error parameter and avoid having a GLOBAL directive
// in all methods.
//
class JpGraphError {
    function Install($aErrObject) {
	GLOBAL $__jpg_err;
	$__jpg_err = $aErrObject;
    }
    function Raise($aMsg,$aHalt=true){
	GLOBAL $__jpg_err;
	$tmp = new $__jpg_err;
	$tmp->Raise($aMsg,$aHalt);
    }
}

//
// ... and install the default error handler
//
if( USE_IMAGE_ERROR_HANDLER ) {
    $__jpg_err = "JpGraphErrObjectImg";
}
else {
    $__jpg_err = "JpGraphErrObject"; 
}

//
// Make GD sanity check
//
if( !function_exists("imagetypes") || !function_exists('imagecreatefromstring') ) {
    JpGraphError::Raise("This PHP installation is not configured with the GD library. Please recompile PHP with GD support to run JpGraph. (Neither function imagetypes() nor imagecreatefromstring() does exist)");
}

//
// Routine to determine if GD1 or GD2 is installed
//
function CheckGDVersion() {
    $GDfuncList = get_extension_funcs('gd');
    if( !$GDfuncList ) return 0 ;
    else {
	if( in_array('imagegd2',$GDfuncList) && 
	    in_array('imagecreatetruecolor',$GDfuncList))
	    return 2;
	else
	    return 1;
    } 
}

//
// Check what version of the GD library is installed.
//
$GLOBALS['gd2'] = false;
if( USE_LIBRARY_GD2 === 'auto' ) {
    $gdversion = CheckGDVersion();
    if( $gdversion == 2 ) {
	$GLOBALS['gd2'] = true;
	$GLOBALS['copyfunc'] = 'imagecopyresampled';
    }
    elseif( $gdversion == 1 ) {
	$GLOBALS['gd2'] = false;
	$GLOBALS['copyfunc'] = 'imagecopyresized';
    }
    else {
	JpGraphError::Raise(" Your PHP installation does not seem to have the required GD library. Please see the PHP documentation on how to install and enable the GD library.");
    }
}
else {
    $GLOBALS['gd2'] = USE_LIBRARY_GD2;
    $GLOBALS['copyfunc'] = USE_LIBRARY_GD2 ? 'imagecopyresampled' : 'imagecopyresized';
}


//
// First of all set up a default error handler
//


//=============================================================
// The default trivial text error handler.
//=============================================================
class JpGraphErrObject {

    var $iTitle = "JpGraph Error";
    var $iDest = false;

    function JpGraphErrObject() {
	// Empty. Reserved for future use
    }

    function SetTitle($aTitle) {
	$this->iTitle = $aTitle;
    }

    function SetStrokeDest($aDest) { 
	$this->iDest = $aDest; 
    }

    // If aHalt is true then execution can't continue. Typical used for fatal errors.
    function Raise($aMsg,$aHalt=true) {
	$aMsg = $this->iTitle.' '.$aMsg;
	if ($this->iDest) {
	    $f = @fopen($this->iDest,'a');
	    if( $f ) {
		@fwrite($f,$aMsg);
		@fclose($f);
	    }
	}
	if( $aHalt )
	    die();
    }
}

//==============================================================
// An image based error handler
//==============================================================
class JpGraphErrObjectImg extends JpGraphErrObject {

    function Raise($aMsg,$aHalt=true) {
	$img_iconerror = 
	    'iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAMAAAC7IEhfAAAAaV'.
	    'BMVEX//////2Xy8mLl5V/Z2VvMzFi/v1WyslKlpU+ZmUyMjEh/'.
	    'f0VyckJlZT9YWDxMTDjAwMDy8sLl5bnY2K/MzKW/v5yyspKlpY'.
	    'iYmH+MjHY/PzV/f2xycmJlZVlZWU9MTEXY2Ms/PzwyMjLFTjea'.
	    'AAAAAXRSTlMAQObYZgAAAAFiS0dEAIgFHUgAAAAJcEhZcwAACx'.
	    'IAAAsSAdLdfvwAAAAHdElNRQfTBgISOCqusfs5AAABLUlEQVR4'.
	    '2tWV3XKCMBBGWfkranCIVClKLd/7P2Q3QsgCxjDTq+6FE2cPH+'.
	    'xJ0Ogn2lQbsT+Wrs+buAZAV4W5T6Bs0YXBBwpKgEuIu+JERAX6'.
	    'wM2rHjmDdEITmsQEEmWADgZm6rAjhXsoMGY9B/NZBwJzBvn+e3'.
	    'wHntCAJdGu9SviwIwoZVDxPB9+Rc0TSEbQr0j3SA1gwdSn6Db0'.
	    '6Tm1KfV6yzWGQO7zdpvyKLKBDmRFjzeB3LYgK7r6A/noDAfjtS'.
	    'IXaIzbJSv6WgUebTMV4EoRB8a2mQiQjgtF91HdKDKZ1gtFtQjk'.
	    'YcWaR5OKOhkYt+ZsTFdJRfPAApOpQYJTNHvCRSJR6SJngQadfc'.
	    'vd69OLMddVOPCGVnmrFD8bVYd3JXfxXPtLR/+mtv59/ALWiiMx'.
	    'qL72fwAAAABJRU5ErkJggg==' ;

	if( function_exists("imagetypes") )
	    $supported = imagetypes();
	else
	    $supported = 0;

	if( !function_exists('imagecreatefromstring') )
	    $supported = 0;

	if( ob_get_length() || headers_sent() || !($supported & IMG_PNG) ) {
	    // Special case for headers already sent or that the installation doesn't support
	    // the PNG format (which the error icon is encoded in). 
	    // Dont return an image since it can't be displayed
	    die($this->iTitle.' '.$aMsg);		
	}

	$aMsg = wordwrap($aMsg,55);
	$lines = substr_count($aMsg,"\n");

	// Create the error icon GD
	$erricon = Image::CreateFromString(base64_decode($img_iconerror));   

	// Create an image that contains the error text.
	$w=400; 	
	$h=100 + 15*max(0,$lines-3);

	$img = new Image($w,$h);

	// Drop shadow
	$img->SetColor("gray");
	$img->FilledRectangle(5,5,$w-1,$h-1,10);
	$img->SetColor("gray:0.7");
	$img->FilledRectangle(5,5,$w-3,$h-3,10);
	
	// Window background
	$img->SetColor("lightblue");
	$img->FilledRectangle(1,1,$w-5,$h-5);
	$img->CopyCanvasH($img->img,$erricon,5,30,0,0,40,40);

	// Window border
	$img->SetColor("black");
	$img->Rectangle(1,1,$w-5,$h-5);
	$img->Rectangle(0,0,$w-4,$h-4);
	
	// Window top row
	$img->SetColor("darkred");
	for($y=3; $y < 18; $y += 2 ) 
	    $img->Line(1,$y,$w-6,$y);

	// "White shadow"
	$img->SetColor("white");

	// Left window edge
	$img->Line(2,2,2,$h-5);
	$img->Line(2,2,$w-6,2);

	// "Gray button shadow"
	$img->SetColor("darkgray");

	// Gray window shadow
	$img->Line(2,$h-6,$w-5,$h-6);
	$img->Line(3,$h-7,$w-5,$h-7);

	// Window title
	$m = floor($w/2-5);
	$l = 100;
	$img->SetColor("lightgray:1.3");