<?php
//=======================================================================
// File: JPGRAPH.PHP
// Description: PHP Graph Plotting library. Base module.
// Created: 2001-01-08
// Ver: $Id: jpgraph.php 1924 2010-01-11 14:03:26Z ljp $
//
// Copyright (c) Aditus Consulting. All rights reserved.
//========================================================================
require_once('jpg-config.inc.php');
require_once('jpgraph_gradient.php');
require_once('jpgraph_errhandler.inc.php');
require_once('jpgraph_ttf.inc.php');
require_once('jpgraph_rgb.inc.php');
require_once('jpgraph_text.inc.php');
require_once('jpgraph_legend.inc.php');
require_once('gd_image.inc.php');
// Version info
define('JPG_VERSION','3.0.7');
// Minimum required PHP version
define('MIN_PHPVERSION','5.1.0');
// Special file name to indicate that we only want to calc
// the image map in the call to Graph::Stroke() used
// internally from the GetHTMLCSIM() method.
define('_CSIM_SPECIALFILE','_csim_special_');
// HTTP GET argument that is used with image map
// to indicate to the script to just generate the image
// and not the full CSIM HTML page.
define('_CSIM_DISPLAY','_jpg_csimd');
// Special filename for Graph::Stroke(). If this filename is given
// then the image will NOT be streamed to browser of file. Instead the
// Stroke call will return the handler for the created GD image.
define('_IMG_HANDLER','__handle');
// Special filename for Graph::Stroke(). If this filename is given
// the image will be stroked to a file with a name based on the script name.
define('_IMG_AUTO','auto');
// 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);
define("BGIMG_FREE",5);
// 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);
// Styles for axis labels background
define('LABELBKG_NONE',0);
define('LABELBKG_XAXIS',1);
define('LABELBKG_YAXIS',2);
define('LABELBKG_XAXISFULL',3);
define('LABELBKG_YAXISFULL',4);
define('LABELBKG_XYFULL',5);
define('LABELBKG_XY',6);
// 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);
// 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']) ) {
$t = new ErrMsgText();
$msg = $t->Get(11,$file,$lineno);
die($msg);
}
else {
define('CACHE_DIR', $_SERVER['TEMP'] . '/');
}
} else {
define('CACHE_DIR','/tmp/jpgraph_cache/');
}
}
}
elseif( !defined('CACHE_DIR') ) {
define('CACHE_DIR', '');
}
//
// Setup path for western/latin TTF fonts
//
if (!defined('TTF_DIR')) {
if (strstr( PHP_OS, 'WIN') ) {
$sroot = getenv('SystemRoot');
if( empty($sroot) ) {
$t = new ErrMsgText();
$msg = $t->Get(12,$file,$lineno);
die($msg);
}
else {
define('TTF_DIR', $sroot.'/fonts/');
}
} else {
define('TTF_DIR','/usr/share/fonts/truetype/');
}
}
//
// Setup path for MultiByte TTF fonts (japanese, chinese etc.)
//
if (!defined('MBTTF_DIR')) {
if (strstr( PHP_OS, 'WIN') ) {
$sroot = getenv('SystemRoot');
if( empty($sroot) ) {
$t = new ErrMsgText();
$msg = $t->Get(12,$file,$lineno);
die($msg);
}
else {
define('MBTTF_DIR', $sroot.'/fonts/');
}
} else {
define('MBTTF_DIR','/usr/share/fonts/truetype/');
}
}
//
// Check minimum PHP version
//
function CheckPHPVersion($aMinVersion) {
list($majorC, $minorC, $editC) = preg_split('/[\/.-]/', PHP_VERSION);
list($majorR, $minorR, $editR) = preg_split('/[\/.-]/', $aMinVersion);
if ($majorC != $majorR) return false;
if ($majorC < $majorR) return false;
// same major - check minor
if ($minorC > $minorR) return true;
if ($minorC < $minorR) return false;
// and same minor
if ($editC >= $editR) return true;
return true;
}
//
// Make sure PHP version is high enough
//
if( !CheckPHPVersion(MIN_PHPVERSION) ) {
JpGraphError::RaiseL(13,PHP_VERSION,MIN_PHPVERSION);
die();
}
//
// Make GD sanity check
//
if( !function_exists("imagetypes") || !function_exists('imagecreatefromstring') ) {
JpGraphError::RaiseL(25001);
//("This PHP installation is not configured with the GD library. Please recompile PHP with GD support to run JpGraph. (Neither function imagetypes() nor imagecreatefromstring() does exist)");
}
//
// Setup PHP error handler
//
function _phpErrorHandler($errno,$errmsg,$filename, $linenum, $vars) {
// Respect current error level
if( $errno & error_reporting() ) {
JpGraphError::RaiseL(25003,basename($filename),$linenum,$errmsg);
}
}
if( INSTALL_PHP_ERR_HANDLER ) {
set_error_handler("_phpErrorHandler");
}
//
// Check if there were any warnings, perhaps some wrong includes by the user. In this
// case we raise it immediately since otherwise the image will not show and makes
// debugging difficult. This is controlled by the user setting CATCH_PHPERRMSG
//
if( isset($GLOBALS['php_errormsg']) && CATCH_PHPERRMSG && !preg_match('/|Deprecated|/i', $GLOBALS['php_errormsg']) ) {
JpGraphError::RaiseL(25004,$GLOBALS['php_errormsg']);
}
// Useful mathematical function
function sign($a) {return $a >= 0 ? 1 : -1;}
//
// Utility function to generate an image name based on the filename we
// are running from and assuming we use auto detection of graphic format
// (top leve
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