关于jpgraph类

<?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