Changeset 265 for trunk/client/modules/Elezioni/grafici/gd_image.inc.php

Timestamp:

Apr 13, 2019, 8:05:15 PM (5 years ago)

Author:

roby

Message:

 

File:

• trunk/client/modules/Elezioni/grafici/gd_image.inc.php (modified) (4 diffs)

trunk/client/modules/Elezioni/grafici/gd_image.inc.php

@@ -1 +1 @@
 <?php
 //=======================================================================
-// File:        GD_IMAGE.INC.PHP
-// Description: PHP Graph Plotting library. Low level image drawing routines
-// Created:     2001-01-08, refactored 2008-03-29
-// Ver:         $Id$
+// File:        GD_IMAGE.INC.PHP
+// Description: PHP Graph Plotting library. Low level image drawing routines
+// Created:     2001-01-08, refactored 2008-03-29
+// Ver:         $Id: gd_image.inc.php 1922 2010-01-11 11:42:50Z ljp $
 //
-// Copyright (c) Aditus Consulting. All rights reserved.
+// Copyright (c) Asial Corporation. All rights reserved.
 //========================================================================
 
-        
-//===================================================
+require_once 'jpgraph_rgb.inc.php';
+require_once 'jpgraph_ttf.inc.php';
+require_once 'imageSmoothArc.php';
+require_once 'jpgraph_errhandler.inc.php';
+
+// Line styles
+define('LINESTYLE_SOLID',1);
+define('LINESTYLE_DOTTED',2);
+define('LINESTYLE_DASHED',3);
+define('LINESTYLE_LONGDASH',4);
+
+// The DEFAULT_GFORMAT sets the default graphic encoding format, i.e.
+// PNG, JPG or GIF depending on what is installed on the target system
+// in that order.
+if( !DEFINED("DEFAULT_GFORMAT") ) {
+    define("DEFAULT_GFORMAT","auto");
+}
+
+//========================================================================
 // CLASS Image
-// Description: Wrapper class with some goodies to form the
-// Interface to low level image drawing routines.
-//===================================================
+// Description: The very coor image drawing class that encapsulates all
+//              calls to the GD library
+//              Note: The class used by the library is the decendant
+//              class RotImage which extends the Image class with transparent
+//              rotation.
+//=========================================================================
 class Image {
-    public $left_margin=30,$right_margin=30,$top_margin=20,$bottom_margin=30;
     public $img=null;
-    public $plotwidth=0,$plotheight=0;
-    public $width=0, $height=0;
     public $rgb=null;
-    public $current_color,$current_color_name;
-    public $line_weight=1, $line_style=LINESTYLE_SOLID; 
     public $img_format;
     public $ttf=null;
+    public $line_style=LINESTYLE_SOLID;
+    public $current_color,$current_color_name;
+    public $original_width=0, $original_height=0;
+    public $plotwidth=0,$plotheight=0;
+
+    // for __get, __set
+    private $_left_margin=30,$_right_margin=30,$_top_margin=20,$_bottom_margin=30;
+    //private $_plotwidth=0,$_plotheight=0;
+    private $_width=0, $_height=0;
+    private $_line_weight=1;
+
     protected $expired=true;
     protected $lastx=0, $lasty=0;
     protected $obs_list=array();
-    protected $font_size=12,$font_family=FF_FONT1, $font_style=FS_NORMAL;
+    protected $font_size=12,$font_family=FF_DEFAULT, $font_style=FS_NORMAL;
     protected $font_file='';
     protected $text_halign="left",$text_valign="bottom";
@@ -37 +63 @@
     protected $langconv = null ;
     protected $iInterlace=false;
+    protected $bbox_cache = array(); // STore the last found tetx bounding box
+    protected $ff_font0;
+    protected $ff_font0_bold;
+    protected $ff_font1;
+    protected $ff_font1_bold;
+    protected $ff_font2;
+    protected $ff_font2_bold;
+
+
     //---------------
     // CONSTRUCTOR
-    function Image($aWidth,$aHeight,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
-        $this->CreateImgCanvas($aWidth,$aHeight);
-        if( $aSetAutoMargin )
-            $this->SetAutoMargin();             
-
-        if( !$this->SetImgFormat($aFormat) ) {
-            JpGraphError::RaiseL(25081,$aFormat);//("JpGraph: Selected graphic format is either not supported or unknown [$aFormat]");
-        }
-        $this->ttf = new TTF();
-        $this->langconv = new LanguageConv();
+    function __construct($aWidth=0,$aHeight=0,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
+
+        $this->original_width  = $aWidth;
+        $this->original_height = $aHeight;
+        $this->CreateImgCanvas($aWidth, $aHeight);
+
+        if( $aSetAutoMargin ) {
+            $this->SetAutoMargin();
+        }
+
+        if( !$this->SetImgFormat($aFormat) ) {
+            JpGraphError::RaiseL(25081,$aFormat);//("JpGraph: Selected graphic format is either not supported or unknown [$aFormat]");
+        }
+        $this->ttf = new TTF();
+        $this->langconv = new LanguageConv();
+
+        $this->ff_font0 =  imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT0.gdf");
+        $this->ff_font1 =  imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT1.gdf");
+        $this->ff_font2 =  imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT2.gdf");
+        $this->ff_font1_bold =  imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT1-Bold.gdf");
+        $this->ff_font2_bold =  imageloadfont(dirname(__FILE__) . "/fonts/FF_FONT2-Bold.gdf");
     }
 
     // Enable interlacing in images
     function SetInterlace($aFlg=true) {
-        $this->iInterlace=$aFlg;
+        $this->iInterlace=$aFlg;
     }
 
     // Should we use anti-aliasing. Note: This really slows down graphics!
     function SetAntiAliasing($aFlg=true) {
-        $this->use_anti_aliasing = $aFlg;
-        if( function_exists('imageantialias') ) {
-            imageantialias($this->img,$aFlg);
-        }
-        else {
-            JpGraphError::RaiseL(25128);//('The function imageantialias() is not available in your PHP installation. Use the GD version that comes with PHP and not the standalone version.')
-        }
+        $this->use_anti_aliasing = $aFlg;
+        if( function_exists('imageantialias') ) {
+            imageantialias($this->img,$aFlg);
+        }
+        else {
+            JpGraphError::RaiseL(25128);//('The function imageantialias() is not available in your PHP installation. Use the GD version that comes with PHP and not the standalone version.')
+        }
+    }
+
+    function GetAntiAliasing() {
+        return $this->use_anti_aliasing ;
     }
 
     function CreateRawCanvas($aWidth=0,$aHeight=0) {
-        if( $aWidth <= 1 || $aHeight <= 1 ) {
-            JpGraphError::RaiseL(25082,$aWidth,$aHeight);//("Illegal sizes specified for width or height when creating an image, (width=$aWidth, height=$aHeight)");
-        }
-
-        if( USE_TRUECOLOR ) {
-            $this->img = @imagecreatetruecolor($aWidth, $aHeight);
-            if( $this->img < 1 ) {
-                JpGraphError::RaiseL(25126);
-                //die("Can't create truecolor image. Check that you really have GD2 library installed.");
-            }
-            $this->SetAlphaBlending();
-        } else {
-            $this->img = @imagecreate($aWidth, $aHeight);       
-            if( $this->img < 1 ) {
-                JpGraphError::RaiseL(25126);
-                //die("<b>JpGraph Error:</b> Can't create image. Check that you really have the GD library installed.");
-            }
-        }
-
-        if( $this->iInterlace ) {
-            imageinterlace($this->img,1);
-        }
-        if( $this->rgb != null ) 
-            $this->rgb->img = $this->img ;
-        else
-            $this->rgb = new RGB($this->img);                           
+
+        $aWidth  *= SUPERSAMPLING_SCALE;
+        $aHeight *= SUPERSAMPLING_SCALE;
+
+        if( $aWidth <= 1 || $aHeight <= 1 ) {
+            JpGraphError::RaiseL(25082,$aWidth,$aHeight);//("Illegal sizes specified for width or height when creating an image, (width=$aWidth, height=$aHeight)");
+        }
+
+        $this->img = @imagecreatetruecolor($aWidth, $aHeight);
+        if( $this->img < 1 ) {
+            JpGraphError::RaiseL(25126);
+            //die("Can't create truecolor image. Check that you really have GD2 library installed.");
+        }
+        $this->SetAlphaBlending();
+
+        if( $this->iInterlace ) {
+            imageinterlace($this->img,1);
+        }
+        if( $this->rgb != null ) {
+            $this->rgb->img = $this->img ;
+        }
+        else {
+            $this->rgb = new RGB($this->img);
+        }
     }
 
     function CloneCanvasH() {
-        $oldimage = $this->img;
-        $this->CreateRawCanvas($this->width,$this->height);
-        imagecopy($this->img,$oldimage,0,0,0,0,$this->width,$this->height);
-        return $oldimage;
-    }
-    
+        $oldimage = $this->img;
+        $this->CreateRawCanvas($this->width,$this->height);
+        imagecopy($this->img,$oldimage,0,0,0,0,$this->width,$this->height);
+        return $oldimage;
+    }
+
     function CreateImgCanvas($aWidth=0,$aHeight=0) {
 
-        $old = array($this->img,$this->width,$this->height);
-        
-        $aWidth = round($aWidth);
-        $aHeight = round($aHeight);
-
-        $this->width=$aWidth;
-        $this->height=$aHeight;         
-
-        
-        if( $aWidth==0 || $aHeight==0 ) {
-            // We will set the final size later. 
-            // Note: The size must be specified before any other
-            // img routines that stroke anything are called.
-            $this->img = null;
-            $this->rgb = null;
-            return $old;
-        }
-        
-        $this->CreateRawCanvas($aWidth,$aHeight);
-        // Set canvas color (will also be the background color for a 
-        // a pallett image
-        $this->SetColor($this->canvascolor);    
-        $this->FilledRectangle(0,0,$aWidth,$aHeight);
-
-        return $old ;
+        $old = array($this->img,$this->width,$this->height);
+
+        $aWidth = round($aWidth);
+        $aHeight = round($aHeight);
+
+        $this->width=$aWidth;
+        $this->height=$aHeight;
+
+
+        if( $aWidth==0 || $aHeight==0 ) {
+            // We will set the final size later.
+            // Note: The size must be specified before any other
+            // img routines that stroke anything are called.
+            $this->img = null;
+            $this->rgb = null;
+            return $old;
+        }
+
+        $this->CreateRawCanvas($aWidth,$aHeight);
+        // Set canvas color (will also be the background color for a
+        // a pallett image
+        $this->SetColor($this->canvascolor);
+        $this->FilledRectangle(0,0,$this->width-1,$this->height-1);
+
+        return $old ;
     }
 
     function CopyCanvasH($aToHdl,$aFromHdl,$aToX,$aToY,$aFromX,$aFromY,$aWidth,$aHeight,$aw=-1,$ah=-1) {
-        if( $aw === -1 ) {
-            $aw = $aWidth;
-            $ah = $aHeight;
-            $f = 'imagecopyresized';
-        }
-        else {
-            $f = 'imagecopyresampled';
-        }
-        $f($aToHdl,$aFromHdl,$aToX,$aToY,$aFromX,$aFromY, $aWidth,$aHeight,$aw,$ah);
+        if( $aw === -1 ) {
+            $aw = $aWidth;
+            $ah = $aHeight;
+            $f = 'imagecopyresized';
+        }
+        else {
+            $f = 'imagecopyresampled';
+        }
+        $f($aToHdl,$aFromHdl,$aToX,$aToY,$aFromX,$aFromY, $aWidth,$aHeight,$aw,$ah);
     }
 
     function Copy($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1) {
-        $this->CopyCanvasH($this->img,$fromImg,$toX,$toY,$fromX,$fromY,
-                           $toWidth,$toHeight,$fromWidth,$fromHeight);
+        $this->CopyCanvasH($this->img,$fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight);
     }
 
     function CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1,$aMix=100) {
-        if( $aMix == 100 ) {
-            $this->CopyCanvasH($this->img,$fromImg,
-                               $toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight);
-        }
-        else {
-            if( ($fromWidth  != -1 && ($fromWidth != $toWidth))  ||
-                ($fromHeight != -1 && ($fromHeight != $fromHeight)) ) {
-                // Create a new canvas that will hold the re-scaled original from image
-                if( $toWidth <= 1 || $toHeight <= 1 ) {
-                    JpGraphError::RaiseL(25083);//('Illegal image size when copying image. Size for copied to image is 1 pixel or less.');
-                }
-                if( USE_TRUECOLOR ) {
-                    $tmpimg = @imagecreatetruecolor($toWidth, $toHeight);
-                } else {
-                    $tmpimg = @imagecreate($toWidth, $toHeight);        
-                }           
-                if( $tmpimg < 1 ) {
-                    JpGraphError::RaiseL(25084);//('Failed to create temporary GD canvas. Out of memory ?');
-                }
-                $this->CopyCanvasH($tmpimg,$fromImg,0,0,0,0,
-                                   $toWidth,$toHeight,$fromWidth,$fromHeight);
-                $fromImg = $tmpimg;
-            }
-            imagecopymerge($this->img,$fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$aMix);
-        }
+        if( $aMix == 100 ) {
+            $this->CopyCanvasH($this->img,$fromImg,
+            $toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight);
+        }
+        else {
+            if( ($fromWidth  != -1 && ($fromWidth != $toWidth)) || ($fromHeight != -1 && ($fromHeight != $fromHeight)) ) {
+                // Create a new canvas that will hold the re-scaled original from image
+                if( $toWidth <= 1 || $toHeight <= 1 ) {
+                    JpGraphError::RaiseL(25083);//('Illegal image size when copying image. Size for copied to image is 1 pixel or less.');
+                }
+
+                $tmpimg = @imagecreatetruecolor($toWidth, $toHeight);
+
+                if( $tmpimg < 1 ) {
+                    JpGraphError::RaiseL(25084);//('Failed to create temporary GD canvas. Out of memory ?');
+                }
+                $this->CopyCanvasH($tmpimg,$fromImg,0,0,0,0,
+                $toWidth,$toHeight,$fromWidth,$fromHeight);
+                $fromImg = $tmpimg;
+            }
+            imagecopymerge($this->img,$fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$aMix);
+        }
     }
 
     static function GetWidth($aImg=null) {
-        if( $aImg === null ) 
-            $aImg = $this->img;
-        return imagesx($aImg);
+        if( $aImg === null ) {
+            $aImg = $this->img;
+        }
+        return imagesx($aImg);
     }
 
     static function GetHeight($aImg=null) {
-        if( $aImg === null ) 
-            $aImg = $this->img;
-        return imagesy($aImg);
-    }
-    
+        if( $aImg === null ) {
+            $aImg = $this->img;
+        }
+        return imagesy($aImg);
+    }
+
     static function CreateFromString($aStr) {
-        $img = imagecreatefromstring($aStr);
-        if( $img === false ) {
-            JpGraphError::RaiseL(25085);//('An image can not be created from the supplied string. It is either in a format not supported or the string is representing an corrupt image.');
-        }
-        return $img;
+        $img = imagecreatefromstring($aStr);
+        if( $img === false ) {
+            JpGraphError::RaiseL(25085);
+            //('An image can not be created from the supplied string. It is either in a format not supported or the string is representing an corrupt image.');
+        }
+        return $img;
     }
 
     function SetCanvasH($aHdl) {
-        $this->img = $aHdl;
-        $this->rgb->img = $aHdl;
+        $this->img = $aHdl;
+        $this->rgb->img = $aHdl;
     }
 
     function SetCanvasColor($aColor) {
-        $this->canvascolor = $aColor ;
+        $this->canvascolor = $aColor ;
     }
 
     function SetAlphaBlending($aFlg=true) {
-        ImageAlphaBlending($this->img,$aFlg);
-    }
-
-        
-    function SetAutoMargin() {  
-        GLOBAL $gJpgBrandTiming;
-        $min_bm=5;
-        /*
-        if( $gJpgBrandTiming )
-            $min_bm=15;         
-        */
-        $lm = min(40,$this->width/7);
-        $rm = min(20,$this->width/10);
-        $tm = max(5,$this->height/7);
-        $bm = max($min_bm,$this->height/7);
-        $this->SetMargin($lm,$rm,$tm,$bm);              
-    }
-
-                                
+        ImageAlphaBlending($this->img,$aFlg);
+    }
+
+    function SetAutoMargin() {
+        $min_bm=5;
+        $lm = min(40,$this->width/7);
+        $rm = min(20,$this->width/10);
+        $tm = max(5,$this->height/7);
+        $bm = max($min_bm,$this->height/6);
+        $this->SetMargin($lm,$rm,$tm,$bm);
+    }
+
     //---------------
-    // PUBLIC METHODS   
-        
+    // PUBLIC METHODS
+
     function SetFont($family,$style=FS_NORMAL,$size=10) {
-        $this->font_family=$family;
-        $this->font_style=$style;
-        $this->font_size=$size;
-        $this->font_file='';
-        if( ($this->font_family==FF_FONT1 || $this->font_family==FF_FONT2) && $this->font_style==FS_BOLD ){
-            ++$this->font_family;
-        }
-        if( $this->font_family > FF_FONT2+1 ) { // A TTF font so get the font file
-
-            // Check that this PHP has support for TTF fonts
-            if( !function_exists('imagettfbbox') ) {
-                JpGraphError::RaiseL(25087);//('This PHP build has not been configured with TTF support. You need to recompile your PHP installation with FreeType support.');
-            }
-            $this->font_file = $this->ttf->File($this->font_family,$this->font_style);
-        }
+        $this->font_family=$family;
+        $this->font_style=$style;
+        $this->font_size=$size*SUPERSAMPLING_SCALE;
+        $this->font_file='';
+        if( ($this->font_family==FF_FONT1 || $this->font_family==FF_FONT2) && $this->font_style==FS_BOLD ){
+            ++$this->font_family;
+        }
+        if( $this->font_family > FF_FONT2+1 ) { // A TTF font so get the font file
+
+            // Check that this PHP has support for TTF fonts
+            if( !function_exists('imagettfbbox') ) {
+                // use internal font when php is configured without '--with-ttf'
+                $this->font_family = FF_FONT1;
+//                JpGraphError::RaiseL(25087);//('This PHP build has not been configured with TTF support. You need to recompile your PHP installation with FreeType support.');
+            } else {
+                $this->font_file = $this->ttf->File($this->font_family,$this->font_style);
+            }
+        }
     }
 
     // Get the specific height for a text string
     function GetTextHeight($txt="",$angle=0) {
-        $tmp = split("\n",$txt);
-        $n = count($tmp);
-        $m=0;
-        for($i=0; $i< $n; ++$i)
-            $m = max($m,strlen($tmp[$i]));
-
-        if( $this->font_family <= FF_FONT2+1 ) {
-            if( $angle==0 ) {
-                $h = imagefontheight($this->font_family);
-                if( $h === false ) {
-                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
-                }
-
-                return $n*$h;
-            }
-            else {
-                $w = @imagefontwidth($this->font_family);
-                if( $w === false ) {
-                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
-                }
-
-                return $m*$w;
-            }
-        }
-        else {
-            $bbox = $this->GetTTFBBox($txt,$angle);
-            return $bbox[1]-$bbox[5];
-        }
-    }
-        
+        $tmp = preg_split('/\n/',$txt);
+        $n = count($tmp);
+        $m=0;
+        for($i=0; $i< $n; ++$i) {
+            $m = max($m,strlen($tmp[$i]));
+        }
+
+        if( $this->font_family <= FF_FONT2+1 ) {
+            if( $angle==0 ) {
+                $h = imagefontheight($this->font_family);
+                if( $h === false ) {
+                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
+                }
+
+                return $n*$h;
+            }
+            else {
+                $w = @imagefontwidth($this->font_family);
+                if( $w === false ) {
+                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
+                }
+
+                return $m*$w;
+            }
+        }
+        else {
+            $bbox = $this->GetTTFBBox($txt,$angle);
+            return $bbox[1]-$bbox[5]+1;
+        }
+    }
+
     // Estimate font height
     function GetFontHeight($angle=0) {
-        $txt = "XOMg";
-        return $this->GetTextHeight($txt,$angle);
-    }
-        
+        $txt = "XOMg";
+        return $this->GetTextHeight($txt,$angle);
+    }
+
     // Approximate font width with width of letter "O"
     function GetFontWidth($angle=0) {
-        $txt = 'O';
-        return $this->GetTextWidth($txt,$angle);
-    }
-        
-    // Get actual width of text in absolute pixels
+        $txt = 'O';
+        return $this->GetTextWidth($txt,$angle);
+    }
+
+    // Get actual width of text in absolute pixels. Note that the width is the
+    // texts projected with onto the x-axis. Call with angle=0 to get the true
+    // etxt width.
     function GetTextWidth($txt,$angle=0) {
 
-        $tmp = split("\n",$txt);
-        $n = count($tmp);
-        if( $this->font_family <= FF_FONT2+1 ) {
-
-            $m=0;
-            for($i=0; $i < $n; ++$i) {
-                $l=strlen($tmp[$i]);
-                if( $l > $m ) {
-                    $m = $l;
-                }
-            }
-
-            if( $angle==0 ) {
-                $w = @imagefontwidth($this->font_family);
-                if( $w === false ) {
-                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
-                }
-                return $m*$w;
-            }
-            else {
-                // 90 degrees internal so height becomes width
-                $h = @imagefontheight($this->font_family); 
-                if( $h === false ) {
-                    JpGraphError::RaiseL(25089);//('You have a misconfigured GD font support. The call to imagefontheight() fails.');
-                }
-                return $n*$h;
-            }
-        }
-        else {
-            // For TTF fonts we must walk through a lines and find the 
-            // widest one which we use as the width of the multi-line
-            // paragraph
-            $m=0;
-            for( $i=0; $i < $n; ++$i ) {
-                $bbox = $this->GetTTFBBox($tmp[$i],$angle);
-                $mm =  $bbox[2] - $bbox[0];
-                if( $mm > $m ) 
-                    $m = $mm;
-            }
-            return $m;
-        }
-    }
-        
+        $tmp = preg_split('/\n/',$txt);
+        $n = count($tmp);
+        if( $this->font_family <= FF_FONT2+1 ) {
+
+            $m=0;
+            for($i=0; $i < $n; ++$i) {
+                $l=strlen($tmp[$i]);
+                if( $l > $m ) {
+                    $m = $l;
+                }
+            }
+
+            if( $angle==0 ) {
+                $w = @imagefontwidth($this->font_family);
+                if( $w === false ) {
+                    JpGraphError::RaiseL(25088);//('You have a misconfigured GD font support. The call to imagefontwidth() fails.');
+                }
+                return $m*$w;
+            }
+            else {
+                // 90 degrees internal so height becomes width
+                $h = @imagefontheight($this->font_family);
+                if( $h === false ) {
+                    JpGraphError::RaiseL(25089);//('You have a misconfigured GD font support. The call to imagefontheight() fails.');
+                }
+                return $n*$h;
+            }
+        }
+        else {
+            // For TTF fonts we must walk through a lines and find the
+            // widest one which we use as the width of the multi-line
+            // paragraph
+            $m=0;
+            for( $i=0; $i < $n; ++$i ) {
+                $bbox = $this->GetTTFBBox($tmp[$i],$angle);
+                $mm =  $bbox[2] - $bbox[0];
+                if( $mm > $m )
+                    $m = $mm;
+            }
+            return $m;
+        }
+    }
+
+
     // Draw text with a box around it
     function StrokeBoxedText($x,$y,$txt,$dir=0,$fcolor="white",$bcolor="black",
-                             $shadowcolor=false,$paragraph_align="left",
-                             $xmarg=6,$ymarg=4,$cornerradius=0,$dropwidth=3) {
-
-        if( !is_numeric($dir) ) {
-            if( $dir=="h" ) $dir=0;
-            elseif( $dir=="v" ) $dir=90;
-            else JpGraphError::RaiseL(25090,$dir);//(" Unknown direction specified in call to StrokeBoxedText() [$dir]");
-        }
-                
-        if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {       
-            $width=$this->GetTextWidth($txt,$dir) ;
-            $height=$this->GetTextHeight($txt,$dir) ;
-        }
-        else {
-            $width=$this->GetBBoxWidth($txt,$dir) ;
-            $height=$this->GetBBoxHeight($txt,$dir) ;
-        }
-
-        $height += 2*$ymarg;
-        $width  += 2*$xmarg;
-
-        if( $this->text_halign=="right" ) $x -= $width;
-        elseif( $this->text_halign=="center" ) $x -= $width/2;
-        if( $this->text_valign=="bottom" ) $y -= $height;
-        elseif( $this->text_valign=="center" ) $y -= $height/2;
-        
-        $olda = $this->SetAngle(0);
-
-        if( $shadowcolor ) {
-            $this->PushColor($shadowcolor);
-            $this->FilledRoundedRectangle($x-$xmarg+$dropwidth,$y-$ymarg+$dropwidth,
-                                          $x+$width+$dropwidth,$y+$height-$ymarg+$dropwidth,
-                                          $cornerradius);
-            $this->PopColor();
-            $this->PushColor($fcolor);
-            $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,
-                                          $x+$width,$y+$height-$ymarg,
-                                          $cornerradius);               
-            $this->PopColor();
-            $this->PushColor($bcolor);
-            $this->RoundedRectangle($x-$xmarg,$y-$ymarg,
-                                    $x+$width,$y+$height-$ymarg,$cornerradius);
-            $this->PopColor();
-        }
-        else {
-            if( $fcolor ) {
-                $oc=$this->current_color;
-                $this->SetColor($fcolor);
-                $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
-                $this->current_color=$oc;
-            }
-            if( $bcolor ) {
-                $oc=$this->current_color;
-                $this->SetColor($bcolor);                       
-                $this->RoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
-                $this->current_color=$oc;                       
-            }
-        }
-                
-        $h=$this->text_halign;
-        $v=$this->text_valign;
-        $this->SetTextAlign("left","top");
-        $this->StrokeText($x, $y, $txt, $dir, $paragraph_align);
-        $bb = array($x-$xmarg,$y+$height-$ymarg,$x+$width,$y+$height-$ymarg,
-                    $x+$width,$y-$ymarg,$x-$xmarg,$y-$ymarg);
-        $this->SetTextAlign($h,$v);
-
-        $this->SetAngle($olda);
-
-        return $bb;
-    }
-
-    // Set text alignment       
+                             $shadowcolor=false,$paragraph_align="left",
+                             $xmarg=6,$ymarg=4,$cornerradius=0,$dropwidth=3) {
+
+                $oldx = $this->lastx;
+                $oldy = $this->lasty;
+
+        if( !is_numeric($dir) ) {
+            if( $dir=="h" ) $dir=0;
+            elseif( $dir=="v" ) $dir=90;
+            else JpGraphError::RaiseL(25090,$dir);//(" Unknown direction specified in call to StrokeBoxedText() [$dir]");
+        }
+
+        if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {
+            $width=$this->GetTextWidth($txt,$dir) ;
+            $height=$this->GetTextHeight($txt,$dir) ;
+        }
+        else {
+            $width=$this->GetBBoxWidth($txt,$dir) ;
+            $height=$this->GetBBoxHeight($txt,$dir) ;
+        }
+
+        $height += 2*$ymarg;
+        $width  += 2*$xmarg;
+
+        if( $this->text_halign=="right" )      $x -= $width;
+        elseif( $this->text_halign=="center" ) $x -= $width/2;
+
+        if( $this->text_valign=="bottom" )     $y -= $height;
+        elseif( $this->text_valign=="center" ) $y -= $height/2;
+
+        $olda = $this->SetAngle(0);
+
+        if( $shadowcolor ) {
+            $this->PushColor($shadowcolor);
+            $this->FilledRoundedRectangle($x-$xmarg+$dropwidth,$y-$ymarg+$dropwidth,
+                                          $x+$width+$dropwidth,$y+$height-$ymarg+$dropwidth,
+                                          $cornerradius);
+            $this->PopColor();
+            $this->PushColor($fcolor);
+            $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,
+                                          $x+$width,$y+$height-$ymarg,
+                                          $cornerradius);
+            $this->PopColor();
+            $this->PushColor($bcolor);
+            $this->RoundedRectangle($x-$xmarg,$y-$ymarg,
+                                    $x+$width,$y+$height-$ymarg,$cornerradius);
+            $this->PopColor();
+        }
+        else {
+            if( $fcolor ) {
+                $oc=$this->current_color;
+                $this->SetColor($fcolor);
+                $this->FilledRoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
+                $this->current_color=$oc;
+            }
+            if( $bcolor ) {
+                $oc=$this->current_color;
+                $this->SetColor($bcolor);
+                $this->RoundedRectangle($x-$xmarg,$y-$ymarg,$x+$width,$y+$height-$ymarg,$cornerradius);
+                $this->current_color=$oc;
+            }
+        }
+
+        $h=$this->text_halign;
+        $v=$this->text_valign;
+        $this->SetTextAlign("left","top");
+
+        $debug=false;
+        $this->StrokeText($x, $y, $txt, $dir, $paragraph_align,$debug);
+
+        $bb = array($x-$xmarg,$y+$height-$ymarg,$x+$width,$y+$height-$ymarg,
+                    $x+$width,$y-$ymarg,$x-$xmarg,$y-$ymarg);
+        $this->SetTextAlign($h,$v);
+
+        $this->SetAngle($olda);
+                $this->lastx = $oldx;
+                $this->lasty = $oldy;
+
+        return $bb;
+    }
+
+    // Draw text with a box around it. This time the box will be rotated
+    // with the text. The previous method will just make a larger enough non-rotated
+    // box to hold the text inside.
+    function StrokeBoxedText2($x,$y,$txt,$dir=0,$fcolor="white",$bcolor="black",
+                             $shadowcolor=false,$paragraph_align="left",
+                             $xmarg=6,$ymarg=4,$cornerradius=0,$dropwidth=3) {
+
+       // This version of boxed text will stroke a rotated box round the text
+       // thta will follow the angle of the text.
+       // This has two implications:
+       // 1) This methos will only support TTF fonts
+       // 2) The only two alignment that makes sense are centered or baselined
+
+       if( $this->font_family <= FF_FONT2+1 ) {
+           JpGraphError::RaiseL(25131);//StrokeBoxedText2() Only support TTF fonts and not built in bitmap fonts
+       }
+
+                $oldx = $this->lastx;
+                $oldy = $this->lasty;
+        $dir = $this->NormAngle($dir);
+
+        if( !is_numeric($dir) ) {
+            if( $dir=="h" ) $dir=0;
+            elseif( $dir=="v" ) $dir=90;
+            else JpGraphError::RaiseL(25090,$dir);//(" Unknown direction specified in call to StrokeBoxedText() [$dir]");
+        }
+
+        $width=$this->GetTextWidth($txt,0) + 2*$xmarg;
+        $height=$this->GetTextHeight($txt,0) + 2*$ymarg ;
+        $rect_width=$this->GetBBoxWidth($txt,$dir) ;
+        $rect_height=$this->GetBBoxHeight($txt,$dir) ;
+
+        $baseline_offset = $this->bbox_cache[1]-1;
+
+        if( $this->text_halign=="center" ) {
+            if( $dir >= 0 && $dir <= 90 ) {
+
+                $x -= $rect_width/2;
+                $x += sin($dir*M_PI/180)*$height;
+                $y += $rect_height/2;                
+
+            } elseif( $dir >= 270 && $dir <= 360 ) {
+
+                $x -= $rect_width/2;
+                $y -= $rect_height/2;
+                $y += cos($dir*M_PI/180)*$height;
+
+            } elseif( $dir >= 90 && $dir <= 180 ) {
+
+                $x += $rect_width/2;
+                $y += $rect_height/2;
+                $y += cos($dir*M_PI/180)*$height;
+
+            }
+            else {
+                // $dir > 180 &&  $dir < 270
+                $x += $rect_width/2;
+                $x += sin($dir*M_PI/180)*$height;
+                $y -= $rect_height/2;
+            }
+        }
+
+        // Rotate the box around this point
+        $this->SetCenter($x,$y);
+        $olda = $this->SetAngle(-$dir);
+
+        // We need to use adjusted coordinats for the box to be able
+        // to draw the box below the baseline. This cannot be done before since
+        // the rotating point must be the original x,y since that is arounbf the
+        // point where the text will rotate and we cannot change this since
+        // that is where the GD/GreeType will rotate the text
+
+
+        // For smaller <14pt font we need to do some additional
+        // adjustments to make it look good
+        if( $this->font_size < 14 ) {
+            $x -= 2;
+            $y += 2;
+        }
+        else {
+          //  $y += $baseline_offset;
+        }
+
+        if( $shadowcolor ) {
+            $this->PushColor($shadowcolor);
+            $this->FilledRectangle($x-$xmarg+$dropwidth,$y+$ymarg+$dropwidth-$height,
+                                          $x+$width+$dropwidth,$y+$ymarg+$dropwidth);
+                                          //$cornerradius);
+            $this->PopColor();
+            $this->PushColor($fcolor);
+            $this->FilledRectangle($x-$xmarg, $y+$ymarg-$height,
+                                          $x+$width, $y+$ymarg);
+                                          //$cornerradius);
+            $this->PopColor();
+            $this->PushColor($bcolor);
+            $this->Rectangle($x-$xmarg,$y+$ymarg-$height,
+                                    $x+$width,$y+$ymarg);
+                                    //$cornerradius);
+            $this->PopColor();
+        }
+        else {
+            if( $fcolor ) {
+                $oc=$this->current_color;
+                $this->SetColor($fcolor);
+                $this->FilledRectangle($x-$xmarg,$y+$ymarg-$height,$x+$width,$y+$ymarg);//,$cornerradius);
+                $this->current_color=$oc;
+            }
+            if( $bcolor ) {
+                $oc=$this->current_color;
+                $this->SetColor($bcolor);
+                $this->Rectangle($x-$xmarg,$y+$ymarg-$height,$x+$width,$y+$ymarg);//,$cornerradius);
+                $this->current_color=$oc;
+            }
+        }
+
+        if( $this->font_size < 14 ) {
+            $x += 2;
+            $y -= 2;
+        }
+        else {
+
+            // Restore the original y before we stroke the text
+           // $y -= $baseline_offset;
+
+        }
+
+        $this->SetCenter(0,0);
+        $this->SetAngle($olda);
+
+        $h=$this->text_halign;
+        $v=$this->text_valign;
+        if( $this->text_halign == 'center') {
+            $this->SetTextAlign('center','basepoint');
+        }
+        else {
+            $this->SetTextAlign('basepoint','basepoint');
+        }
+
+        $debug=false;
+        $this->StrokeText($x, $y, $txt, $dir, $paragraph_align,$debug);
+
+        $bb = array($x-$xmarg, $y+$height-$ymarg,
+                    $x+$width, $y+$height-$ymarg,
+                    $x+$width, $y-$ymarg,
+                    $x-$xmarg, $y-$ymarg);
+
+        $this->SetTextAlign($h,$v);
+        $this->SetAngle($olda);
+
+                $this->lastx = $oldx;
+                $this->lasty = $oldy;
+
+        return $bb;
+    }
+
+    // Set text alignment
     function SetTextAlign($halign,$valign="bottom") {
-        $this->text_halign=$halign;
-        $this->text_valign=$valign;
-    }
-        
-
-    function _StrokeBuiltinFont($x,$y,$txt,$dir=0,$paragraph_align="left",&$aBoundingBox,$aDebug=false) {
-
-        if( is_numeric($dir) && $dir!=90 && $dir!=0) 
-            JpGraphError::RaiseL(25091);//(" Internal font does not support drawing text at arbitrary angle. Use TTF fonts instead.");
-
-        $h=$this->GetTextHeight($txt);
-        $fh=$this->GetFontHeight();
-        $w=$this->GetTextWidth($txt);
-        
-        if( $this->text_halign=="right")                                
-            $x -= $dir==0 ? $w : $h;
-        elseif( $this->text_halign=="center" ) {
-            // For center we subtract 1 pixel since this makes the middle
-            // be prefectly in the middle
-            $x -= $dir==0 ? $w/2-1 : $h/2;
-        }
-        if( $this->text_valign=="top" )
-            $y += $dir==0 ? $h : $w;
-        elseif( $this->text_valign=="center" )                          
-            $y += $dir==0 ? $h/2 : $w/2;
-        
-        if( $dir==90 ) {
-            imagestringup($this->img,$this->font_family,$x,$y,$txt,$this->current_color);
-            $aBoundingBox = array(round($x),round($y),round($x),round($y-$w),round($x+$h),round($y-$w),round($x+$h),round($y));
+        $this->text_halign=$halign;
+        $this->text_valign=$valign;
+    }
+
+    function _StrokeBuiltinFont($x,$y,$txt,$dir,$paragraph_align,&$aBoundingBox,$aDebug=false) {
+
+        if( is_numeric($dir) && $dir!=90 && $dir!=0)
+        JpGraphError::RaiseL(25091);//(" Internal font does not support drawing text at arbitrary angle. Use TTF fonts instead.");
+
+        $h=$this->GetTextHeight($txt);
+        $fh=$this->GetFontHeight();
+        $w=$this->GetTextWidth($txt);
+
+        if( $this->text_halign=="right") {
+            $x -= $dir==0 ? $w : $h;
+        }
+        elseif( $this->text_halign=="center" ) {
+            // For center we subtract 1 pixel since this makes the middle
+            // be prefectly in the middle
+            $x -= $dir==0 ? $w/2-1 : $h/2;
+        }
+        if( $this->text_valign=="top" ) {
+            $y += $dir==0 ? $h : $w;
+        }
+        elseif( $this->text_valign=="center" ) {
+            $y += $dir==0 ? $h/2 : $w/2;
+        }
+
+        $use_font = $this->font_family;
+
+        if( $dir==90 ) {
+            imagestringup($this->img,$use_font,$x,$y,$txt,$this->current_color);
+            $aBoundingBox = array(round($x),round($y),round($x),round($y-$w),round($x+$h),round($y-$w),round($x+$h),round($y));
             if( $aDebug ) {
-                // Draw bounding box
-                $this->PushColor('green');
-                $this->Polygon($aBoundingBox,true);
-                $this->PopColor();
-            }
-        }
-        else {
-            if( preg_match('/\n/',$txt) ) { 
-                $tmp = split("\n",$txt);
-                for($i=0; $i < count($tmp); ++$i) {
-                    $w1 = $this->GetTextWidth($tmp[$i]);
-                    if( $paragraph_align=="left" ) {
-                        imagestring($this->img,$this->font_family,$x,$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
-                    }
-                    elseif( $paragraph_align=="right" ) {
-                        imagestring($this->img,$this->font_family,$x+($w-$w1),
-                                    $y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
-                    }
-                    else {
-                        imagestring($this->img,$this->font_family,$x+$w/2-$w1/2,
-                                    $y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
-                    }
-                }
-            } 
-            else {
-                //Put the text
-                imagestring($this->img,$this->font_family,$x,$y-$h+1,$txt,$this->current_color);
-            }
+                // Draw bounding box
+                $this->PushColor('green');
+                $this->Polygon($aBoundingBox,true);
+                $this->PopColor();
+            }
+        }
+        else {
+            if( preg_match('/\n/',$txt) ) {
+                $tmp = preg_split('/\n/',$txt);
+                for($i=0; $i < count($tmp); ++$i) {
+                    $w1 = $this->GetTextWidth($tmp[$i]);
+                    if( $paragraph_align=="left" ) {
+                        imagestring($this->img,$use_font,$x,$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
+                    }
+                    elseif( $paragraph_align=="right" ) {
+                        imagestring($this->img,$use_font,$x+($w-$w1),$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
+                    }
+                    else {
+                        imagestring($this->img,$use_font,$x+$w/2-$w1/2,$y-$h+1+$i*$fh,$tmp[$i],$this->current_color);
+                    }
+                }
+            }
+            else {
+                //Put the text
+                imagestring($this->img,$use_font,$x,$y-$h+1,$txt,$this->current_color);
+            }
             if( $aDebug ) {
-                // Draw the bounding rectangle and the bounding box
-                $p1 = array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
-                
-                // Draw bounding box
-                $this->PushColor('green');
-                $this->Polygon($p1,true);
-                $this->PopColor();
-
-            }
-            $aBoundingBox=array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
-        }
+                // Draw the bounding rectangle and the bounding box
+                $p1 = array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
+
+                // Draw bounding box
+                $this->PushColor('green');
+                $this->Polygon($p1,true);
+                $this->PopColor();
+
+            }
+            $aBoundingBox=array(round($x),round($y),round($x),round($y-$h),round($x+$w),round($y-$h),round($x+$w),round($y));
+        }
     }
 
     function AddTxtCR($aTxt) {
-        // If the user has just specified a '\n'
-        // instead of '\n\t' we have to add '\r' since
-        // the width will be too muchy otherwise since when
-        // we print we stroke the individually lines by hand.
-        $e = explode("\n",$aTxt);
-        $n = count($e);
-        for($i=0; $i<$n; ++$i) {
-            $e[$i]=str_replace("\r","",$e[$i]);
-        }
-        return implode("\n\r",$e);
-    }
-
+        // If the user has just specified a '\n'
+        // instead of '\n\t' we have to add '\r' since
+        // the width will be too muchy otherwise since when
+        // we print we stroke the individually lines by hand.
+        $e = explode("\n",$aTxt);
+        $n = count($e);
+        for($i=0; $i<$n; ++$i) {
+            $e[$i]=str_replace("\r","",$e[$i]);
+        }
+        return implode("\n\r",$e);
+    }
+
+    function NormAngle($a) {
+        // Normalize angle in degrees
+        // Normalize angle to be between 0-360
+        while( $a > 360 )
+            $a -= 360;
+        while( $a < -360 )
+            $a += 360;
+        if( $a < 0 )
+            $a = 360 + $a;
+        return $a;
+    }
+
+    function imagettfbbox_fixed($size, $angle, $fontfile, $text) {
+
+
+        if( ! USE_LIBRARY_IMAGETTFBBOX ) {
+
+            $bbox = @imagettfbbox($size, $angle, $fontfile, $text);
+            if( $bbox === false ) {
+                JpGraphError::RaiseL(25092,$this->font_file);
+                //("There is either a configuration problem with TrueType or a problem reading font file (".$this->font_file."). Make sure file exists and is in a readable place for the HTTP process. (If 'basedir' restriction is enabled in PHP then the font file must be located in the document root.). It might also be a wrongly installed FreeType library. Try uppgrading to at least FreeType 2.1.13 and recompile GD with the correct setup so it can find the new FT library.");
+            }
+            $this->bbox_cache = $bbox;
+            return $bbox;
+        }
+
+        // The built in imagettfbbox is buggy for angles != 0 so
+        // we calculate this manually by getting the bounding box at
+        // angle = 0 and then rotate the bounding box manually
+        $bbox = @imagettfbbox($size, 0, $fontfile, $text);
+        if( $bbox === false ) {
+            JpGraphError::RaiseL(25092,$this->font_file);
+            //("There is either a configuration problem with TrueType or a problem reading font file (".$this->font_file."). Make sure file exists and is in a readable place for the HTTP process. (If 'basedir' restriction is enabled in PHP then the font file must be located in the document root.). It might also be a wrongly installed FreeType library. Try uppgrading to at least FreeType 2.1.13 and recompile GD with the correct setup so it can find the new FT library.");
+        }
+
+        $angle = $this->NormAngle($angle);
+
+        $a = $angle*M_PI/180;
+        $ca = cos($a);
+        $sa = sin($a);
+        $ret = array();
+
+        // We always add 1 pixel to the left since the left edge of the bounding
+        // box is sometimes coinciding with the first pixel of the text
+        //$bbox[0] -= 1;
+        //$bbox[6] -= 1;
+        
+        // For roatated text we need to add extra width for rotated
+        // text since the kerning and stroking of the TTF is not the same as for
+        // text at a 0 degree angle
+
+        if( $angle > 0.001 && abs($angle-360) > 0.001 ) {
+            $h = abs($bbox[7]-$bbox[1]);
+            $w = abs($bbox[2]-$bbox[0]);
+
+            $bbox[0] -= 2;
+            $bbox[6] -= 2;
+            // The width is underestimated so compensate for that
+            $bbox[2] += round($w*0.06);
+            $bbox[4] += round($w*0.06);
+
+            // and we also need to compensate with increased height
+            $bbox[5] -= round($h*0.1);
+            $bbox[7] -= round($h*0.1);
+
+            if( $angle > 90 ) {
+                // For angles > 90 we also need to extend the height further down
+                // by the baseline since that is also one more problem
+                $bbox[1] += round($h*0.15);
+                $bbox[3] += round($h*0.15);
+
+                // and also make it slighty less height
+                $bbox[7] += round($h*0.05);
+                $bbox[5] += round($h*0.05);
+
+                // And we need to move the box slightly top the rright (from a tetx perspective)
+                $bbox[0] += round($w*0.02);
+                $bbox[6] += round($w*0.02);
+
+                if( $angle > 180 ) {
+                    // And we need to move the box slightly to the left (from a text perspective)
+                    $bbox[0] -= round($w*0.02);
+                    $bbox[6] -= round($w*0.02);
+                    $bbox[2] -= round($w*0.02);
+                    $bbox[4] -= round($w*0.02);
+
+                }
+
+            }
+            for($i = 0; $i < 7; $i += 2) {
+                $ret[$i] = round($bbox[$i] * $ca + $bbox[$i+1] * $sa);
+                $ret[$i+1] = round($bbox[$i+1] * $ca - $bbox[$i] * $sa);
+            }
+            $this->bbox_cache = $ret;
+            return $ret;
+        }
+        else {
+            $this->bbox_cache = $bbox;
+            return $bbox;
+        }
+    }
+
+    // Deprecated
     function GetTTFBBox($aTxt,$aAngle=0) {
-        $bbox = @ImageTTFBBox($this->font_size,$aAngle,$this->font_file,$aTxt);
-        if( $bbox === false ) {
-            JpGraphError::RaiseL(25092,$this->font_file);
-//("There is either a configuration problem with TrueType or a problem reading font file (".$this->font_file."). Make sure file exists and is in a readable place for the HTTP process. (If 'basedir' restriction is enabled in PHP then the font file must be located in the document root.). It might also be a wrongly installed FreeType library. Try uppgrading to at least FreeType 2.1.13 and recompile GD with the correct setup so it can find the new FT library.");
-        }
-        return $bbox;
+        $bbox = $this->imagettfbbox_fixed($this->font_size,$aAngle,$this->font_file,$aTxt);
+         return $bbox;
     }
 
     function GetBBoxTTF($aTxt,$aAngle=0) {
-        // Normalize the bounding box to become a minimum
-        // enscribing rectangle
-
-        $aTxt = $this->AddTxtCR($aTxt);
-
-        if( !is_readable($this->font_file) ) {
-            JpGraphError::RaiseL(25093,$this->font_file);
-//('Can not read font file ('.$this->font_file.') in call to Image::GetBBoxTTF. Please make sure that you have set a font before calling this method and that the font is installed in the TTF directory.');
-        }
-        $bbox = $this->GetTTFBBox($aTxt,$aAngle);
-
-        if( $aAngle==0 ) 
-            return $bbox;
-        if( $aAngle >= 0 ) {
-            if(  $aAngle <= 90 ) { //<=0                
-                $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
-                              $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
-            }
-            elseif(  $aAngle <= 180 ) { //<= 2
-                $bbox = array($bbox[4],$bbox[7],$bbox[0],$bbox[7],
-                              $bbox[0],$bbox[3],$bbox[4],$bbox[3]);
-            }
-            elseif(  $aAngle <= 270 )  { //<= 3
-                $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
-                              $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
-            }
-            else {
-                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
-                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
-            }
-        }
-        elseif(  $aAngle < 0 ) {
-            if( $aAngle <= -270 ) { // <= -3
-                $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
-                              $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
-            }
-            elseif( $aAngle <= -180 ) { // <= -2
-                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
-                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
-            }
-            elseif( $aAngle <= -90 ) { // <= -1
-                $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
-                              $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
-            }
-            else {
-                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
-                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
-            }
-        }       
-        return $bbox;
+        // Normalize the bounding box to become a minimum
+        // enscribing rectangle
+
+        $aTxt = $this->AddTxtCR($aTxt);
+
+        if( !is_readable($this->font_file) ) {
+            JpGraphError::RaiseL(25093,$this->font_file);
+            //('Can not read font file ('.$this->font_file.') in call to Image::GetBBoxTTF. Please make sure that you have set a font before calling this method and that the font is installed in the TTF directory.');
+        }
+        $bbox = $this->imagettfbbox_fixed($this->font_size,$aAngle,$this->font_file,$aTxt);
+
+        if( $aAngle==0 ) return $bbox;
+
+        if( $aAngle >= 0 ) {
+            if(  $aAngle <= 90 ) { //<=0
+                $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
+                              $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
+            }
+            elseif(  $aAngle <= 180 ) { //<= 2
+                $bbox = array($bbox[4],$bbox[7],$bbox[0],$bbox[7],
+                              $bbox[0],$bbox[3],$bbox[4],$bbox[3]);
+            }
+            elseif(  $aAngle <= 270 )  { //<= 3
+                $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
+                              $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
+            }
+            else {
+                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
+                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
+            }
+        }
+        elseif(  $aAngle < 0 ) {
+            if( $aAngle <= -270 ) { // <= -3
+                $bbox = array($bbox[6],$bbox[1],$bbox[2],$bbox[1],
+                              $bbox[2],$bbox[5],$bbox[6],$bbox[5]);
+            }
+            elseif( $aAngle <= -180 ) { // <= -2
+                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
+                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
+            }
+            elseif( $aAngle <= -90 ) { // <= -1
+                $bbox = array($bbox[2],$bbox[5],$bbox[6],$bbox[5],
+                              $bbox[6],$bbox[1],$bbox[2],$bbox[1]);
+            }
+            else {
+                $bbox = array($bbox[0],$bbox[3],$bbox[4],$bbox[3],
+                              $bbox[4],$bbox[7],$bbox[0],$bbox[7]);
+            }
+        }
+        return $bbox;
     }
 
     function GetBBoxHeight($aTxt,$aAngle=0) {
-        $box = $this->GetBBoxTTF($aTxt,$aAngle);
-        return $box[1]-$box[7]+1;
+        $box = $this->GetBBoxTTF($aTxt,$aAngle);
+        return abs($box[7]-$box[1]);
     }
 
     function GetBBoxWidth($aTxt,$aAngle=0) {
-        $box = $this->GetBBoxTTF($aTxt,$aAngle);
-        return $box[2]-$box[0]+1;       
-    }
-
-    function _StrokeTTF($x,$y,$txt,$dir=0,$paragraph_align="left",&$aBoundingBox,$debug=false) {
-
-        // Setupo default inter line margin for paragraphs to
-        // 25% of the font height.
-        $ConstLineSpacing = 0.25 ;
-
-        // Remember the anchor point before adjustment
-        if( $debug ) {
-            $ox=$x;
-            $oy=$y;
-        }
-
-        if( !preg_match('/\n/',$txt) || ($dir>0 && preg_match('/\n/',$txt)) ) {
-            // Format a single line
-
-            $txt = $this->AddTxtCR($txt);
-
-            $bbox=$this->GetBBoxTTF($txt,$dir);
-            
-            // Align x,y ot lower left corner of bbox
-            $x -= $bbox[0];
-            $y -= $bbox[1];
-
-            // Note to self: "topanchor" is deprecated after we changed the
-            // bopunding box stuff. 
-            if( $this->text_halign=="right" || $this->text_halign=="topanchor" ) 
-                $x -= $bbox[2]-$bbox[0];
-            elseif( $this->text_halign=="center" ) $x -= ($bbox[2]-$bbox[0])/2; 
-            
-            if( $this->text_valign=="top" ) $y += abs($bbox[5])+$bbox[1];
-            elseif( $this->text_valign=="center" ) $y -= ($bbox[5]-$bbox[1])/2; 
-
-            ImageTTFText ($this->img, $this->font_size, $dir, $x, $y, 
-                          $this->current_color,$this->font_file,$txt); 
-
-            // Calculate and return the co-ordinates for the bounding box
-            $box=@ImageTTFBBox($this->font_size,$dir,$this->font_file,$txt);
-            $p1 = array();
-
-
-            for($i=0; $i < 4; ++$i) {
-                $p1[] = round($box[$i*2]+$x);
-                $p1[] = round($box[$i*2+1]+$y);
-            }
-            $aBoundingBox = $p1;
-
-            // Debugging code to highlight the bonding box and bounding rectangle
-            // For text at 0 degrees the bounding box and bounding rectangle are the
-            // same
+        $box = $this->GetBBoxTTF($aTxt,$aAngle);
+        return $box[2]-$box[0]+1;
+    }
+
+
+    function _StrokeTTF($x,$y,$txt,$dir,$paragraph_align,&$aBoundingBox,$debug=false) {
+
+        // Setup default inter line margin for paragraphs to be
+        // 3% of the font height.
+        $ConstLineSpacing = 0.03 ;
+
+        // Remember the anchor point before adjustment
+        if( $debug ) {
+            $ox=$x;
+            $oy=$y;
+        }
+
+        if( !preg_match('/\n/',$txt) || ($dir>0 && preg_match('/\n/',$txt)) ) {
+            // Format a single line
+
+            $txt = $this->AddTxtCR($txt);
+            $bbox=$this->GetBBoxTTF($txt,$dir);
+            $width  = $this->GetBBoxWidth($txt,$dir);
+            $height = $this->GetBBoxHeight($txt,$dir);
+
+            // The special alignment "basepoint" is mostly used internally
+            // in the library. This will put the anchor position at the left
+            // basepoint of the tetx. This is the default anchor point for
+            // TTF text.
+
+            if( $this->text_valign != 'basepoint' ) {
+                // Align x,y ot lower left corner of bbox
+                
+
+                if( $this->text_halign=='right' ) {
+                    $x -= $width;
+                    $x -= $bbox[0];
+                }
+                elseif( $this->text_halign=='center' ) {
+                    $x -= $width/2;
+                    $x -= $bbox[0];
+                }
+                elseif( $this->text_halign=='baseline' ) {
+                    // This is only support for text at 90 degree !!
+                    // Do nothing the text is drawn at baseline by default
+                }
+
+                if( $this->text_valign=='top' ) {
+                    $y -= $bbox[1]; // Adjust to bottom of text
+                    $y += $height;
+                }
+                elseif( $this->text_valign=='center' ) {
+                    $y -= $bbox[1]; // Adjust to bottom of text
+                    $y += $height/2;
+                }
+                elseif( $this->text_valign=='baseline' ) {
+                    // This is only support for text at 0 degree !!
+                    // Do nothing the text is drawn at baseline by default
+                }
+            } 
+            ImageTTFText ($this->img, $this->font_size, $dir, $x, $y,
+                          $this->current_color,$this->font_file,$txt);
+
+            // Calculate and return the co-ordinates for the bounding box
+            $box = $this->imagettfbbox_fixed($this->font_size,$dir,$this->font_file,$txt);
+            $p1 = array();
+
+            for($i=0; $i < 4; ++$i) {
+                $p1[] = round($box[$i*2]+$x);
+                $p1[] = round($box[$i*2+1]+$y);
+            }
+            $aBoundingBox = $p1;
+
+            // Debugging code to highlight the bonding box and bounding rectangle
+            // For text at 0 degrees the bounding box and bounding rectangle are the
+            // same
             if( $debug ) {
-                // Draw the bounding rectangle and the bounding box
-                $box=@ImageTTFBBox($this->font_size,$dir,$this->font_file,$txt);
-                $p = array();
-                $p1 = array();
-                for($i=0; $i < 4; ++$i) {
-                    $p[] = $bbox[$i*2]+$x;
-                    $p[] = $bbox[$i*2+1]+$y;
-                    $p1[] = $box[$i*2]+$x;
-                    $p1[] = $box[$i*2+1]+$y;
-                }
-
-                // Draw bounding box
-                $this->PushColor('green');
-                $this->Polygon($p1,true);
-                $this->PopColor();
-                
-                // Draw bounding rectangle
-                $this->PushColor('darkgreen');
-                $this->Polygon($p,true);
-                $this->PopColor();
-                
-                // Draw a cross at the anchor point
-                $this->PushColor('red');
-                $this->Line($ox-15,$oy,$ox+15,$oy);
-                $this->Line($ox,$oy-15,$ox,$oy+15);
-                $this->PopColor();
-            }
-        }
-        else {
-            // Format a text paragraph
-            $fh=$this->GetFontHeight();
-
-            // Line margin is 25% of font height
-            $linemargin=round($fh*$ConstLineSpacing);
-            $fh += $linemargin;
-            $w=$this->GetTextWidth($txt);
-
-            $y -= $linemargin/2;
-            $tmp = split("\n",$txt);
-            $nl = count($tmp);
-            $h = $nl * $fh;
-
-            if( $this->text_halign=="right")                            
-                $x -= $dir==0 ? $w : $h;
-            elseif( $this->text_halign=="center" ) {
-                $x -= $dir==0 ? $w/2 : $h/2;
-            }
-            
-            if( $this->text_valign=="top" )
-                $y +=   $dir==0 ? $h : $w;
-            elseif( $this->text_valign=="center" )                              
-                $y +=   $dir==0 ? $h/2 : $w/2;
-
-            // Here comes a tricky bit. 
-            // Since we have to give the position for the string at the
-            // baseline this means thaht text will move slightly up
-            // and down depending on any of it's character descend below
-            // the baseline, for example a 'g'. To adjust the Y-position
-            // we therefore adjust the text with the baseline Y-offset
-            // as used for the current font and size. This will keep the
-            // baseline at a fixed positoned disregarding the actual 
-            // characters in the string. 
-            $standardbox = $this->GetTTFBBox('Gg',$dir);
-            $yadj = $standardbox[1];
-            $xadj = $standardbox[0];
-            $aBoundingBox = array();
-            for($i=0; $i < $nl; ++$i) {
-                $wl = $this->GetTextWidth($tmp[$i]);
-                $bbox = $this->GetTTFBBox($tmp[$i],$dir);
-                if( $paragraph_align=="left" ) {
-                    $xl = $x; 
-                }
-                elseif( $paragraph_align=="right" ) {
-                    $xl = $x + ($w-$wl);
-                }
-                else {
-                    // Center
-                    $xl = $x + $w/2 - $wl/2 ;
-                }
-
-                $xl -= $bbox[0];
-                $yl = $y - $yadj; 
-                $xl = $xl - $xadj; 
-                ImageTTFText ($this->img, $this->font_size, $dir, 
-                              $xl, $yl-($h-$fh)+$fh*$i,
-                              $this->current_color,$this->font_file,$tmp[$i]); 
-
-                if( $debug  ) {
-                    // Draw the bounding rectangle around each line
-                    $box=@ImageTTFBBox($this->font_size,$dir,$this->font_file,$tmp[$i]);
-                    $p = array();
-                    for($j=0; $j < 4; ++$j) {
-                        $p[] = $bbox[$j*2]+$xl;
-                        $p[] = $bbox[$j*2+1]+$yl-($h-$fh)+$fh*$i;
-                    }
-                    
-                    // Draw bounding rectangle
-                    $this->PushColor('darkgreen');
-                    $this->Polygon($p,true);
-                    $this->PopColor();
-                }
-            }
-
-            // Get the bounding box
-            $bbox = $this->GetBBoxTTF($txt,$dir);
-            for($j=0; $j < 4; ++$j) {
-                $bbox[$j*2]+= round($x);
-                $bbox[$j*2+1]+= round($y - ($h-$fh) - $yadj);
-            }
-            $aBoundingBox = $bbox;
-
-            if( $debug ) {      
-                // Draw a cross at the anchor point
-                $this->PushColor('red');
-                $this->Line($ox-25,$oy,$ox+25,$oy);
-                $this->Line($ox,$oy-25,$ox,$oy+25);
-                $this->PopColor();
-            }
-
-        }
-    }
-        
+            // Draw the bounding rectangle and the bounding box
+
+                $p = array();
+                $p1 = array();
+
+                for($i=0; $i < 4; ++$i) {
+                    $p[] =  $bbox[$i*2]+$x ;
+                    $p[] =  $bbox[$i*2+1]+$y;
+                    $p1[] = $box[$i*2]+$x ;
+                    $p1[] = $box[$i*2+1]+$y ;
+                }
+
+                // Draw bounding box
+                $this->PushColor('green');
+                $this->Polygon($p1,true);
+                $this->PopColor();
+
+                // Draw bounding rectangle
+                $this->PushColor('darkgreen');
+                $this->Polygon($p,true);
+                $this->PopColor();
+
+                // Draw a cross at the anchor point
+                $this->PushColor('red');
+                $this->Line($ox-15,$oy,$ox+15,$oy);
+                $this->Line($ox,$oy-15,$ox,$oy+15);
+                $this->PopColor();
+            }
+        }
+        else {
+            // Format a text paragraph
+            $fh=$this->GetFontHeight();
+
+            // Line margin is 25% of font height
+            $linemargin=round($fh*$ConstLineSpacing);
+            $fh += $linemargin;
+            $w=$this->GetTextWidth($txt);
+
+            $y -= $linemargin/2;
+            $tmp = preg_split('/\n/',$txt);
+            $nl = count($tmp);
+            $h = $nl * $fh;
+
+            if( $this->text_halign=='right') {
+                $x -= $dir==0 ? $w : $h;
+            }
+            elseif( $this->text_halign=='center' ) {
+                $x -= $dir==0 ? $w/2 : $h/2;
+            }
+
+            if( $this->text_valign=='top' ) {
+                $y += $dir==0 ? $h : $w;
+            }
+            elseif( $this->text_valign=='center' ) {
+                $y += $dir==0 ? $h/2 : $w/2;
+            }
+
+            // Here comes a tricky bit.
+            // Since we have to give the position for the string at the
+            // baseline this means thaht text will move slightly up
+            // and down depending on any of it's character descend below
+            // the baseline, for example a 'g'. To adjust the Y-position
+            // we therefore adjust the text with the baseline Y-offset
+            // as used for the current font and size. This will keep the
+            // baseline at a fixed positoned disregarding the actual
+            // characters in the string.
+            $standardbox = $this->GetTTFBBox('Gg',$dir);
+            $yadj = $standardbox[1];
+            $xadj = $standardbox[0];
+            $aBoundingBox = array();
+            for($i=0; $i < $nl; ++$i) {
+                $wl = $this->GetTextWidth($tmp[$i]);
+                $bbox = $this->GetTTFBBox($tmp[$i],$dir);
+                if( $paragraph_align=='left' ) {
+                    $xl = $x;
+                }
+                elseif( $paragraph_align=='right' ) {
+                    $xl = $x + ($w-$wl);
+                }
+                else {
+                    // Center
+                    $xl = $x + $w/2 - $wl/2 ;
+                }
+
+                // In theory we should adjust with full pre-lead to get the lines
+                // lined up but this doesn't look good so therfore we only adjust with
+                // half th pre-lead
+                $xl -= $bbox[0]/2;
+                $yl = $y - $yadj;
+                //$xl = $xl- $xadj;
+                ImageTTFText($this->img, $this->font_size, $dir, $xl, $yl-($h-$fh)+$fh*$i,
+                             $this->current_color,$this->font_file,$tmp[$i]);
+
+               // echo "xl=$xl,".$tmp[$i]." <br>";
+                if( $debug  ) {
+                    // Draw the bounding rectangle around each line
+                    $box=@ImageTTFBBox($this->font_size,$dir,$this->font_file,$tmp[$i]);
+                    $p = array();
+                    for($j=0; $j < 4; ++$j) {
+                        $p[] = $bbox[$j*2]+$xl;
+                        $p[] = $bbox[$j*2+1]+$yl-($h-$fh)+$fh*$i;
+                    }
+
+                    // Draw bounding rectangle
+                    $this->PushColor('darkgreen');
+                    $this->Polygon($p,true);
+                    $this->PopColor();
+                }
+            }
+
+            // Get the bounding box
+            $bbox = $this->GetBBoxTTF($txt,$dir);
+            for($j=0; $j < 4; ++$j) {
+                $bbox[$j*2]+= round($x);
+                $bbox[$j*2+1]+= round($y - ($h-$fh) - $yadj);
+            }
+            $aBoundingBox = $bbox;
+
+            if( $debug ) {
+                // Draw a cross at the anchor point
+                $this->PushColor('red');
+                $this->Line($ox-25,$oy,$ox+25,$oy);
+                $this->Line($ox,$oy-25,$ox,$oy+25);
+                $this->PopColor();
+            }
+
+        }
+    }
+
     function StrokeText($x,$y,$txt,$dir=0,$paragraph_align="left",$debug=false) {
 
-        $x = round($x);
-        $y = round($y);
-
-        // Do special language encoding
-        $txt = $this->langconv->Convert($txt,$this->font_family);
-
-        if( !is_numeric($dir) )
-            JpGraphError::RaiseL(25094);//(" Direction for text most be given as an angle between 0 and 90.");
-                        
-        if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {       
-            $this->_StrokeBuiltinFont($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
-        }
-        elseif($this->font_family >= _FIRST_FONT && $this->font_family <= _LAST_FONT)  {
-            $this->_StrokeTTF($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
-        }
-        else
-            JpGraphError::RaiseL(25095);//(" Unknown font font family specification. ");
-        return $boundingbox;
-    }
-        
+        $x = round($x);
+        $y = round($y);
+
+        // Do special language encoding
+        $txt = $this->langconv->Convert($txt,$this->font_family);
+
+        if( !is_numeric($dir) ) {
+            JpGraphError::RaiseL(25094);//(" Direction for text most be given as an angle between 0 and 90.");
+        }
+
+        if( $this->font_family >= FF_FONT0 && $this->font_family <= FF_FONT2+1) {
+            $this->_StrokeBuiltinFont($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
+        }
+        elseif( $this->font_family >= _FIRST_FONT && $this->font_family <= _LAST_FONT)  {
+            $this->_StrokeTTF($x,$y,$txt,$dir,$paragraph_align,$boundingbox,$debug);
+        }
+        else {
+            JpGraphError::RaiseL(25095);//(" Unknown font font family specification. ");
+        }
+        return $boundingbox;
+    }
+
     function SetMargin($lm,$rm,$tm,$bm) {
-        $this->left_margin=$lm;
-        $this->right_margin=$rm;
-        $this->top_margin=$tm;
-        $this->bottom_margin=$bm;
-        $this->plotwidth=$this->width - $this->left_margin-$this->right_margin ; 
-        $this->plotheight=$this->height - $this->top_margin-$this->bottom_margin ;
-        if( $this->width  > 0 && $this->height > 0 ) {
-            if( $this->plotwidth < 0  || $this->plotheight < 0 )
-                JpGraphError::raise("To small plot area. ($lm,$rm,$tm,$bm : $this->plotwidth x $this->plotheight). With the given image size and margins there is to little space left for the plot. Increase the plot size or reduce the margins.");
-        }
+
+        $this->left_margin=$lm;
+        $this->right_margin=$rm;
+        $this->top_margin=$tm;
+        $this->bottom_margin=$bm;
+
+        $this->plotwidth  = $this->width  - $this->left_margin - $this->right_margin;
+        $this->plotheight = $this->height - $this->top_margin  - $this->bottom_margin;
+
+        if( $this->width  > 0 && $this->height > 0 ) {
+            if( $this->plotwidth < 0  || $this->plotheight < 0 ) {
+                JpGraphError::RaiseL(25130, $this->plotwidth, $this->plotheight);
+                //JpGraphError::raise("To small plot area. ($lm,$rm,$tm,$bm : $this->plotwidth x $this->plotheight). With the given image size and margins there is to little space left for the plot. Increase the plot size or reduce the margins.");
+            }
+        }
     }
 
     function SetTransparent($color) {
-        imagecolortransparent ($this->img,$this->rgb->allocate($color));
-    }
-        
+        imagecolortransparent ($this->img,$this->rgb->allocate($color));
+    }
+
     function SetColor($color,$aAlpha=0) {
-        $this->current_color_name = $color;
-        $this->current_color=$this->rgb->allocate($color,$aAlpha);
-        if( $this->current_color == -1 ) {
-            $tc=imagecolorstotal($this->img);
-            JpGraphError::RaiseL(25096);
-//("Can't allocate any more colors. Image has already allocated maximum of <b>$tc colors</b>. This might happen if you have anti-aliasing turned on together with a background image or perhaps gradient fill since this requires many, many colors. Try to turn off anti-aliasing. If there is still a problem try downgrading the quality of the background image to use a smaller pallete to leave some entries for your graphs. You should try to limit the number of colors in your background image to 64. If there is still problem set the constant DEFINE(\"USE_APPROX_COLORS\",true); in jpgraph.php This will use approximative colors when the palette is full. Unfortunately there is not much JpGraph can do about this since the palette size is a limitation of current graphic format and what the underlying GD library suppports."); 
-        }
-        return $this->current_color;
-    }
-        
+        $this->current_color_name = $color;
+        $this->current_color=$this->rgb->allocate($color,$aAlpha);
+        if( $this->current_color == -1 ) {
+            $tc=imagecolorstotal($this->img);
+            JpGraphError::RaiseL(25096);
+            //("Can't allocate any more colors. Image has already allocated maximum of <b>$tc colors</b>. This might happen if you have anti-aliasing turned on together with a background image or perhaps gradient fill since this requires many, many colors. Try to turn off anti-aliasing. If there is still a problem try downgrading the quality of the background image to use a smaller pallete to leave some entries for your graphs. You should try to limit the number of colors in your background image to 64. If there is still problem set the constant DEFINE(\"USE_APPROX_COLORS\",true); in jpgraph.php This will use approximative colors when the palette is full. Unfortunately there is not much JpGraph can do about this since the palette size is a limitation of current graphic format and what the underlying GD library suppports.");
+        }
+        return $this->current_color;
+    }
+
     function PushColor($color) {
-        if( $color != "" ) {
-            $this->colorstack[$this->colorstackidx]=$this->current_color_name;
-            $this->colorstack[$this->colorstackidx+1]=$this->current_color;
-            $this->colorstackidx+=2;
-            $this->SetColor($color);
-        }
-        else {
-            JpGraphError::RaiseL(25097);//("Color specified as empty string in PushColor().");
-        }
-    }
-        
+        if( $color != "" ) {
+            $this->colorstack[$this->colorstackidx]=$this->current_color_name;
+            $this->colorstack[$this->colorstackidx+1]=$this->current_color;
+            $this->colorstackidx+=2;
+            $this->SetColor($color);
+        }
+        else {
+            JpGraphError::RaiseL(25097);//("Color specified as empty string in PushColor().");
+        }
+    }
+
     function PopColor() {
-        if($this->colorstackidx<1)
-            JpGraphError::RaiseL(25098);//(" Negative Color stack index. Unmatched call to PopColor()");
-        $this->current_color=$this->colorstack[--$this->colorstackidx];
-        $this->current_color_name=$this->colorstack[--$this->colorstackidx];
-    }
-        
-        
+        if( $this->colorstackidx < 1 ) {
+            JpGraphError::RaiseL(25098);//(" Negative Color stack index. Unmatched call to PopColor()");
+        }
+        $this->current_color=$this->colorstack[--$this->colorstackidx];
+        $this->current_color_name=$this->colorstack[--$this->colorstackidx];
+    }
+
+
     function SetLineWeight($weight) {
-        imagesetthickness($this->img,$weight);
-        $this->line_weight = $weight;
-    }
-        
+        $old = $this->line_weight;
+        imagesetthickness($this->img,$weight);
+        $this->line_weight = $weight;
+        return $old;
+    }
+
     function SetStartPoint($x,$y) {
-        $this->lastx=round($x);
-        $this->lasty=round($y);
-    }
-        
+        $this->lastx=round($x);
+        $this->lasty=round($y);
+    }
+
     function Arc($cx,$cy,$w,$h,$s,$e) {
-        // GD Arc doesn't like negative angles
-        while( $s < 0) $s += 360;
-        while( $e < 0) $e += 360;
-        
-        imagearc($this->img,round($cx),round($cy),round($w),round($h),
-                 $s,$e,$this->current_color);
-    }
-    
+        // GD Arc doesn't like negative angles
+        while( $s < 0) $s += 360;
+        while( $e < 0) $e += 360;
+        imagearc($this->img,round($cx),round($cy),round($w),round($h),$s,$e,$this->current_color);
+    }
+
     function FilledArc($xc,$yc,$w,$h,$s,$e,$style='') {
-        while( $s < 0 ) $s += 360;
-        while( $e < 0 ) $e += 360;
-        if( $style=='' ) 
-            $style=IMG_ARC_PIE;
-        if( abs($s-$e) > 0.001 ) {
-            imagefilledarc($this->img,round($xc),round($yc),round($w),round($h),
-                           round($s),round($e),$this->current_color,$style);
-        }
+        $s = round($s);
+        $e = round($e);
+        while( $s < 0 ) $s += 360;
+        while( $e < 0 ) $e += 360;
+        if( $style=='' )
+        $style=IMG_ARC_PIE;
+        if( abs($s-$e) > 0 ) {
+            imagefilledarc($this->img,round($xc),round($yc),round($w),round($h),$s,$e,$this->current_color,$style);
+//            $this->DrawImageSmoothArc($this->img,round($xc),round($yc),round($w),round($h),$s,$e,$this->current_color,$style);
+        }
     }
 
     function FilledCakeSlice($cx,$cy,$w,$h,$s,$e) {
-        $this->CakeSlice($cx,$cy,$w,$h,$s,$e,$this->current_color_name);
+        $this->CakeSlice($cx,$cy,$w,$h,$s,$e,$this->current_color_name);
     }
 
     function CakeSlice($xc,$yc,$w,$h,$s,$e,$fillcolor="",$arccolor="") {
-        $s = round($s); $e = round($e);
-        $w = round($w); $h = round($h);
-        $xc = round($xc); $yc = round($yc);
-        if( $s ==$e ) {
-            // A full circle. We draw this a plain circle
-            $this->PushColor($fillcolor);
-            imagefilledellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
-            $this->PopColor();
-            $this->PushColor($arccolor);
-            imageellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
-            $this->Line($xc,$yc,cos($s*M_PI/180)*$w+$xc,$yc+sin($s*M_PI/180)*$h);
-            $this->PopColor();
-        }
-        else {
-            $this->PushColor($fillcolor);
-            $this->FilledArc($xc,$yc,2*$w,2*$h,$s,$e);
-            $this->PopColor();
-            if( $arccolor != "" ) {
-                $this->PushColor($arccolor);
-                // We add 2 pixels to make the Arc() better aligned with
-                // the filled arc. 
-                imagefilledarc($this->img,$xc,$yc,2*$w,2*$h,$s,$e,$this->current_color,IMG_ARC_NOFILL | IMG_ARC_EDGED ) ;
-                $this->PopColor();
-            }
-        }
+        $s = round($s); $e = round($e);
+        $w = round($w); $h = round($h);
+        $xc = round($xc); $yc = round($yc);
+        if( $s == $e ) {
+            // A full circle. We draw this a plain circle
+            $this->PushColor($fillcolor);
+            imagefilledellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
+
+            // If antialiasing is used then we often don't have any color no the surrounding
+            // arc. So, we need to check for this special case so we don't send an empty
+            // color to the push function. In this case we use the fill color for the arc as well
+            if( $arccolor != '' ) {
+                $this->PopColor();
+                $this->PushColor($arccolor);
+            }
+            imageellipse($this->img,$xc,$yc,2*$w,2*$h,$this->current_color);
+            $this->Line($xc,$yc,cos($s*M_PI/180)*$w+$xc,$yc+sin($s*M_PI/180)*$h);
+            $this->PopColor();
+        }
+        else {
+            $this->PushColor($fillcolor);
+            $this->FilledArc($xc,$yc,2*$w,2*$h,$s,$e);
+            $this->PopColor();
+            if( $arccolor != "" ) {
+                $this->PushColor($arccolor);
+                // We add 2 pixels to make the Arc() better aligned with
+                // the filled arc.
+                imagefilledarc($this->img,$xc,$yc,2*$w,2*$h,$s,$e,$this->current_color,IMG_ARC_NOFILL | IMG_ARC_EDGED ) ;
+                $this->PopColor();
+            }
+        }
     }
 
     function Ellipse($xc,$yc,$w,$h) {
-        $this->Arc($xc,$yc,$w,$h,0,360);
-    }
-                        
+        $this->Arc($xc,$yc,$w,$h,0,360);
+    }
+
     function Circle($xc,$yc,$r) {
-        imageellipse($this->img,round($xc),round($yc),$r*2,$r*2,$this->current_color);
-    }
-        
+        imageellipse($this->img,round($xc),round($yc),$r*2,$r*2,$this->current_color);
+//        $this->DrawImageSmoothArc($this->img,round($xc),round($yc),$r*2+1,$r*2+1,0,360,$this->current_color);
+//        $this->imageSmoothCircle($this->img, round($xc),round($yc), $r*2+1, $this->current_color);
+    }
+
     function FilledCircle($xc,$yc,$r) {
-        imagefilledellipse($this->img,round($xc),round($yc),2*$r,2*$r,$this->current_color);
-    }
-        
+        imagefilledellipse($this->img,round($xc),round($yc),2*$r,2*$r,$this->current_color);
+//        $this->DrawImageSmoothArc($this->img, round($xc), round($yc), 2*$r, 2*$r, 0, 360, $this->current_color);
+    }
+
     // Linear Color InterPolation
     function lip($f,$t,$p) {
-        $p = round($p,1);
-        $r = $f[0] + ($t[0]-$f[0])*$p;
-        $g = $f[1] + ($t[1]-$f[1])*$p;
-        $b = $f[2] + ($t[2]-$f[2])*$p;
-        return array($r,$g,$b);
+        $p = round($p,1);
+        $r = $f[0] + ($t[0]-$f[0])*$p;
+        $g = $f[1] + ($t[1]-$f[1])*$p;
+        $b = $f[2] + ($t[2]-$f[2])*$p;
+        return array($r,$g,$b);
     }
 
     // Set line style dashed, dotted etc
     function SetLineStyle($s) {
-        if( is_numeric($s) ) {
-            if( $s<1 || $s>4 ) 
-                JpGraphError::RaiseL(25101,$s);//(" Illegal numeric argument to SetLineStyle(): ($s)");
-        }
-        elseif( is_string($s) ) {
-            if( $s == "solid" ) $s=1;
-            elseif( $s == "dotted" ) $s=2;
-            elseif( $s == "dashed" ) $s=3;
-            elseif( $s == "longdashed" ) $s=4;
-            else JpGraphError::RaiseL(25102,$s);//(" Illegal string argument to SetLineStyle(): $s");
-        }
-        else { 
-            JpGraphError::RaiseL(25103,$s);//(" Illegal argument to SetLineStyle $s");
-        }
-        $old = $this->line_style;
-        $this->line_style=$s;
-        return $old;
-    }
-        
+        if( is_numeric($s) ) {
+            if( $s<1 || $s>4 ) {
+                JpGraphError::RaiseL(25101,$s);//(" Illegal numeric argument to SetLineStyle(): ($s)");
+            }
+        }
+        elseif( is_string($s) ) {
+            if( $s == "solid" ) $s=1;
+            elseif( $s == "dotted" ) $s=2;
+            elseif( $s == "dashed" ) $s=3;
+            elseif( $s == "longdashed" ) $s=4;
+            else {
+                JpGraphError::RaiseL(25102,$s);//(" Illegal string argument to SetLineStyle(): $s");
+            }
+        }
+        else {
+            JpGraphError::RaiseL(25103,$s);//(" Illegal argument to SetLineStyle $s");
+        }
+        $old = $this->line_style;
+        $this->line_style=$s;
+        return $old;
+    }
+
     // Same as Line but take the line_style into account
-    function StyleLine($x1,$y1,$x2,$y2,$aStyle='') {
-        if( $this->line_weight <= 0 )
-            return;
-
-        if( $aStyle === '' ) {
-            $aStyle = $this->line_style;
-        }
-
-        // Add error check since dashed line will only work if anti-alias is disabled
-        // this is a limitation in GD
-
-        switch( $aStyle ) {
-            case 1:// Solid
-                $this->Line($x1,$y1,$x2,$y2);
-                break;
-            case 2: // Dotted
-                $this->DashedLine($x1,$y1,$x2,$y2,2,6);
-                break;
-            case 3: // Dashed
-                $this->DashedLine($x1,$y1,$x2,$y2,5,9);
-                break;
-            case 4: // Longdashes
-                $this->DashedLine($x1,$y1,$x2,$y2,9,13);
-                break;
-            default:
-                JpGraphError::RaiseL(25104,$this->line_style);//(" Unknown line style: $this->line_style ");
-                break;
-        }
-    }
-        
+    function StyleLine($x1,$y1,$x2,$y2,$aStyle='', $from_grid_class = false) {
+        if( $this->line_weight <= 0 ) return;
+
+        if( $aStyle === '' ) {
+            $aStyle = $this->line_style;
+        }
+
+        $dashed_line_method = 'DashedLine';
+        if ($from_grid_class) {
+            $dashed_line_method = 'DashedLineForGrid';
+        }
+
+        // Add error check since dashed line will only work if anti-alias is disabled
+        // this is a limitation in GD
+
+        if( $aStyle == 1 ) {
+            // Solid style. We can handle anti-aliasing for this
+            $this->Line($x1,$y1,$x2,$y2);
+        }
+        else {
+            // Since the GD routines doesn't handle AA for styled line
+            // we have no option than to turn it off to get any lines at
+            // all if the weight > 1
+            $oldaa = $this->GetAntiAliasing();
+            if( $oldaa && $this->line_weight > 1 ) {
+                 $this->SetAntiAliasing(false);
+            }
+
+            switch( $aStyle ) {
+                case 2: // Dotted
+                    $this->$dashed_line_method($x1,$y1,$x2,$y2,2,6);
+                    break;
+                case 3: // Dashed
+                    $this->$dashed_line_method($x1,$y1,$x2,$y2,5,9);
+                    break;
+                case 4: // Longdashes
+                    $this->$dashed_line_method($x1,$y1,$x2,$y2,9,13);
+                    break;
+                default:
+                    JpGraphError::RaiseL(25104,$this->line_style);//(" Unknown line style: $this->line_style ");
+                    break;
+            }
+            if( $oldaa ) {
+                $this->SetAntiAliasing(true);
+            }
+        }
+    }
+
     function DashedLine($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
 
-        if( $this->line_weight <= 0 )
-            return;
-
-        // Add error check to make sure anti-alias is not enabled.
-        // Dashed line does not work with anti-alias enabled. This 
-        // is a limitation in GD.
-        if( $this->use_anti_aliasing ) {
-            JpGraphError::RaiseL(25129); // Anti-alias can not be used with dashed lines. Please disable anti-alias or use solid lines. 
-        }
-        
-
-        $x1 = round($x1);
-        $x2 = round($x2);
-        $y1 = round($y1);
-        $y2 = round($y2);
-
-        $style = array_fill(0,$dash_length,$this->current_color);
-        $style = array_pad($style,$dash_space,IMG_COLOR_TRANSPARENT);
-        imagesetstyle($this->img, $style);
-        imageline($this->img, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
-        $this->lastx=$x2; $this->lasty=$y2;             
-    } 
+        if( $this->line_weight <= 0 ) return;
+
+        // Add error check to make sure anti-alias is not enabled.
+        // Dashed line does not work with anti-alias enabled. This
+        // is a limitation in GD.
+        if( $this->use_anti_aliasing ) {
+//            JpGraphError::RaiseL(25129); // Anti-alias can not be used with dashed lines. Please disable anti-alias or use solid lines.
+        }
+        
+        $x1 = round($x1);
+        $x2 = round($x2);
+        $y1 = round($y1);
+        $y2 = round($y2);
+
+        $dash_length *= SUPERSAMPLING_SCALE;
+        $dash_space  *= SUPERSAMPLING_SCALE;
+
+        $style = array_fill(0,$dash_length,$this->current_color);
+        $style = array_pad($style,$dash_space,IMG_COLOR_TRANSPARENT);
+        imagesetstyle($this->img, $style);
+        imageline($this->img, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
+
+        $this->lastx = $x2;
+        $this->lasty = $y2;
+    }
+
+    function DashedLineForGrid($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
+
+        if( $this->line_weight <= 0 ) return;
+
+        // Add error check to make sure anti-alias is not enabled.
+        // Dashed line does not work with anti-alias enabled. This
+        // is a limitation in GD.
+        if( $this->use_anti_aliasing ) {
+//            JpGraphError::RaiseL(25129); // Anti-alias can not be used with dashed lines. Please disable anti-alias or use solid lines.
+        }
+        
+        $x1 = round($x1);
+        $x2 = round($x2);
+        $y1 = round($y1);
+        $y2 = round($y2);
+        
+        /*
+        $dash_length *= $this->scale;
+        $dash_space  *= $this->scale;
+        */
+
+        $dash_length = 2;
+        $dash_length = 4;
+        imagesetthickness($this->img, 1);
+        $style = array_fill(0,$dash_length, $this->current_color); //hexdec('CCCCCC'));
+        $style = array_pad($style,$dash_space,IMG_COLOR_TRANSPARENT);
+        imagesetstyle($this->img, $style);
+        imageline($this->img, $x1, $y1, $x2, $y2, IMG_COLOR_STYLED);
+
+        $this->lastx = $x2;
+        $this->lasty = $y2;
+    }
 
     function Line($x1,$y1,$x2,$y2) {
 
-        if( $this->line_weight <= 0 )
-            return;
-
-        $x1 = round($x1);
-        $x2 = round($x2);
-        $y1 = round($y1);
-        $y2 = round($y2);
-
-        imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
-        $this->lastx=$x2; $this->lasty=$y2;             
+        if( $this->line_weight <= 0 ) return;
+
+        $x1 = round($x1);
+        $x2 = round($x2);
+        $y1 = round($y1);
+        $y2 = round($y2);
+
+        imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
+//        $this->DrawLine($this->img, $x1, $y1, $x2, $y2, $this->line_weight, $this->current_color);
+        $this->lastx=$x2;
+        $this->lasty=$y2;
     }
 
     function Polygon($p,$closed=FALSE,$fast=FALSE) {
 
-        if( $this->line_weight <= 0 ) 
-            return;
-
-        $n=count($p);
-        $oldx = $p[0];
-        $oldy = $p[1];
-        if( $fast ) {
-            for( $i=2; $i < $n; $i+=2 ) {
-                imageline($this->img,$oldx,$oldy,$p[$i],$p[$i+1],$this->current_color);
-                $oldx = $p[$i];
-                $oldy = $p[$i+1];
-            }
-            if( $closed ) {
-                imageline($this->img,$p[$n*2-2],$p[$n*2-1],$p[0],$p[1],$this->current_color);
-            }
-        }
-        else {
-            for( $i=2; $i < $n; $i+=2 ) {
-                $this->StyleLine($oldx,$oldy,$p[$i],$p[$i+1]);
-                $oldx = $p[$i];
-                $oldy = $p[$i+1];
-            }
-            if( $closed )
-                $this->StyleLine($oldx,$oldy,$p[0],$p[1]);
-        }
-    }
-        
+        if( $this->line_weight <= 0 ) return;
+
+        $n=count($p);
+        $oldx = $p[0];
+        $oldy = $p[1];
+        if( $fast ) {
+            for( $i=2; $i < $n; $i+=2 ) {
+                imageline($this->img,$oldx,$oldy,$p[$i],$p[$i+1],$this->current_color);
+                $oldx = $p[$i];
+                $oldy = $p[$i+1];
+            }
+            if( $closed ) {
+                imageline($this->img,$p[$n*2-2],$p[$n*2-1],$p[0],$p[1],$this->current_color);
+            }
+        }
+        else {
+            for( $i=2; $i < $n; $i+=2 ) {
+                $this->StyleLine($oldx,$oldy,$p[$i],$p[$i+1]);
+                $oldx = $p[$i];
+                $oldy = $p[$i+1];
+            }
+            if( $closed ) {
+                $this->StyleLine($oldx,$oldy,$p[0],$p[1]);
+            }
+        }
+    }
+
     function FilledPolygon($pts) {
-        $n=count($pts);
-        if( $n == 0 ) {
-            JpGraphError::RaiseL(25105);//('NULL data specified for a filled polygon. Check that your data is not NULL.');
-        }
-        for($i=0; $i < $n; ++$i) 
-            $pts[$i] = round($pts[$i]);
-        imagefilledpolygon($this->img,$pts,count($pts)/2,$this->current_color);
-    }
-        
+        $n=count($pts);
+        if( $n == 0 ) {
+            JpGraphError::RaiseL(25105);//('NULL data specified for a filled polygon. Check that your data is not NULL.');
+        }
+        for($i=0; $i < $n; ++$i) {
+            $pts[$i] = round($pts[$i]);
+        }
+        $old = $this->line_weight;
+        imagesetthickness($this->img,1);
+        imagefilledpolygon($this->img,$pts,count($pts)/2,$this->current_color);
+        $this->line_weight = $old;
+        imagesetthickness($this->img,$old);
+    }
+
     function Rectangle($xl,$yu,$xr,$yl) {
-        $this->Polygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl,$xl,$yu));
-    }
-        
+        $this->Polygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl,$xl,$yu));
+    }
+
     function FilledRectangle($xl,$yu,$xr,$yl) {
-        $this->FilledPolygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
+        $this->FilledPolygon(array($xl,$yu,$xr,$yu,$xr,$yl,$xl,$yl));
     }
 
     function FilledRectangle2($xl,$yu,$xr,$yl,$color1,$color2,$style=1) {
-        // Fill a rectangle with lines of two colors
-        if( $style===1 ) {
-            // Horizontal stripe
-            if( $yl < $yu ) {
-                $t = $yl; $yl=$yu; $yu=$t;
-            }
-            for( $y=$yu; $y <= $yl; ++$y) {
-                $this->SetColor($color1);
-                $this->Line($xl,$y,$xr,$y);
-                ++$y;
-                $this->SetColor($color2);
-                $this->Line($xl,$y,$xr,$y);
-            }
-        }
-        else {
-            if( $xl < $xl ) {
-                $t = $xl; $xl=$xr; $xr=$t;
-            }
-            for( $x=$xl; $x <= $xr; ++$x) {
-                $this->SetColor($color1);
-                $this->Line($x,$yu,$x,$yl);
-                ++$x;
-                $this->SetColor($color2);
-                $this->Line($x,$yu,$x,$yl);
-            }
-        }
-    }
-
-    function ShadowRectangle($xl,$yu,$xr,$yl,$fcolor=false,$shadow_width=3,$shadow_color=array(102,102,102)) {
-        // This is complicated by the fact that we must also handle the case where
+        // Fill a rectangle with lines of two colors
+        if( $style===1 ) {
+            // Horizontal stripe
+            if( $yl < $yu ) {
+                $t = $yl; $yl=$yu; $yu=$t;
+            }
+            for( $y=$yu; $y <= $yl; ++$y) {
+                $this->SetColor($color1);
+                $this->Line($xl,$y,$xr,$y);
+                ++$y;
+                $this->SetColor($color2);
+                $this->Line($xl,$y,$xr,$y);
+            }
+        }
+        else {
+            if( $xl < $xl ) {
+                $t = $xl; $xl=$xr; $xr=$t;
+            }
+            for( $x=$xl; $x <= $xr; ++$x) {
+                $this->SetColor($color1);
+                $this->Line($x,$yu,$x,$yl);
+                ++$x;
+                $this->SetColor($color2);
+                $this->Line($x,$yu,$x,$yl);
+            }
+        }
+    }
+
+    function ShadowRectangle($xl,$yu,$xr,$yl,$fcolor=false,$shadow_width=4,$shadow_color='darkgray',$useAlpha=true) {
+        // This is complicated by the fact that we must also handle the case where
         // the reactangle has no fill color
-        $this->PushColor($shadow_color);
-        $this->FilledRectangle($xr-$shadow_width,$yu+$shadow_width,$xr,$yl-$shadow_width-1);
-        $this->FilledRectangle($xl+$shadow_width,$yl-$shadow_width,$xr,$yl);
-        //$this->FilledRectangle($xl+$shadow_width,$yu+$shadow_width,$xr,$yl);
-        $this->PopColor();
-        if( $fcolor==false )
-            $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
-        else {          
-            $this->PushColor($fcolor);
-            $this->FilledRectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
-            $this->PopColor();
-            $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
-        }
+        $xl = floor($xl);
+        $yu = floor($yu);
+        $xr = floor($xr);
+        $yl = floor($yl);
+        $this->PushColor($shadow_color);
+        $shadowAlpha=0;
+        $this->SetLineWeight(1);
+        $this->SetLineStyle('solid');
+        $basecolor = $this->rgb->Color($shadow_color);
+        $shadow_color = array($basecolor[0],$basecolor[1],$basecolor[2],);
+        for( $i=0; $i < $shadow_width; ++$i ) {
+            $this->SetColor($shadow_color,$shadowAlpha);
+            $this->Line($xr-$shadow_width+$i,   $yu+$shadow_width,
+                        $xr-$shadow_width+$i,   $yl-$shadow_width-1+$i);
+            $this->Line($xl+$shadow_width,   $yl-$shadow_width+$i,
+                        $xr-$shadow_width+$i,   $yl-$shadow_width+$i);
+            if( $useAlpha ) $shadowAlpha += 1.0/$shadow_width;
+        }
+
+        $this->PopColor();
+        if( $fcolor==false ) {
+            $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
+        }
+        else {
+            $this->PushColor($fcolor);
+            $this->FilledRectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
+            $this->PopColor();
+            $this->Rectangle($xl,$yu,$xr-$shadow_width-1,$yl-$shadow_width-1);
+        }
     }
 
     function FilledRoundedRectangle($xt,$yt,$xr,$yl,$r=5) {
-        if( $r==0 ) {
-            $this->FilledRectangle($xt,$yt,$xr,$yl);
-            return;
-        }
-
-        // To avoid overlapping fillings (which will look strange
-        // when alphablending is enabled) we have no choice but 
-        // to fill the five distinct areas one by one.
-        
-        // Center square
-        $this->FilledRectangle($xt+$r,$yt+$r,$xr-$r,$yl-$r);
-        // Top band
-        $this->FilledRectangle($xt+$r,$yt,$xr-$r,$yt+$r-1);
-        // Bottom band
-        $this->FilledRectangle($xt+$r,$yl-$r+1,$xr-$r,$yl);
-        // Left band
-        $this->FilledRectangle($xt,$yt+$r+1,$xt+$r-1,$yl-$r);
-        // Right band
-        $this->FilledRectangle($xr-$r+1,$yt+$r,$xr,$yl-$r);
-
-        // Topleft & Topright arc
-        $this->FilledArc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
-        $this->FilledArc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
-
-        // Bottomleft & Bottom right arc
-        $this->FilledArc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
-        $this->FilledArc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
-
-    }
-
-    function RoundedRectangle($xt,$yt,$xr,$yl,$r=5) {    
-
-        if( $r==0 ) {
-            $this->Rectangle($xt,$yt,$xr,$yl);
-            return;
-        }
-
-        // Top & Bottom line
-        $this->Line($xt+$r,$yt,$xr-$r,$yt);
-        $this->Line($xt+$r,$yl,$xr-$r,$yl);
-
-        // Left & Right line
-        $this->Line($xt,$yt+$r,$xt,$yl-$r);
-        $this->Line($xr,$yt+$r,$xr,$yl-$r);
-
-        // Topleft & Topright arc
-        $this->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
-        $this->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
-
-        // Bottomleft & Bottomright arc
-        $this->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
-        $this->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
+        if( $r==0 ) {
+            $this->FilledRectangle($xt,$yt,$xr,$yl);
+            return;
+        }
+
+        // To avoid overlapping fillings (which will look strange
+        // when alphablending is enabled) we have no choice but
+        // to fill the five distinct areas one by one.
+
+        // Center square
+        $this->FilledRectangle($xt+$r,$yt+$r,$xr-$r,$yl-$r);
+        // Top band
+        $this->FilledRectangle($xt+$r,$yt,$xr-$r,$yt+$r);
+        // Bottom band
+        $this->FilledRectangle($xt+$r,$yl-$r,$xr-$r,$yl);
+        // Left band
+        $this->FilledRectangle($xt,$yt+$r,$xt+$r,$yl-$r);
+        // Right band
+        $this->FilledRectangle($xr-$r,$yt+$r,$xr,$yl-$r);
+
+        // Topleft & Topright arc
+        $this->FilledArc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
+        $this->FilledArc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
+
+        // Bottomleft & Bottom right arc
+        $this->FilledArc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
+        $this->FilledArc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
+
+    }
+
+    function RoundedRectangle($xt,$yt,$xr,$yl,$r=5) {
+
+        if( $r==0 ) {
+            $this->Rectangle($xt,$yt,$xr,$yl);
+            return;
+        }
+
+        // Top & Bottom line
+        $this->Line($xt+$r,$yt,$xr-$r,$yt);
+        $this->Line($xt+$r,$yl,$xr-$r,$yl);
+
+        // Left & Right line
+        $this->Line($xt,$yt+$r,$xt,$yl-$r);
+        $this->Line($xr,$yt+$r,$xr,$yl-$r);
+
+        // Topleft & Topright arc
+        $this->Arc($xt+$r,$yt+$r,$r*2,$r*2,180,270);
+        $this->Arc($xr-$r,$yt+$r,$r*2,$r*2,270,360);
+
+        // Bottomleft & Bottomright arc
+        $this->Arc($xt+$r,$yl-$r,$r*2,$r*2,90,180);
+        $this->Arc($xr-$r,$yl-$r,$r*2,$r*2,0,90);
     }
 
     function FilledBevel($x1,$y1,$x2,$y2,$depth=2,$color1='white@0.4',$color2='darkgray@0.4') {
-        $this->FilledRectangle($x1,$y1,$x2,$y2);
-        $this->Bevel($x1,$y1,$x2,$y2,$depth,$color1,$color2);
+        $this->FilledRectangle($x1,$y1,$x2,$y2);
+        $this->Bevel($x1,$y1,$x2,$y2,$depth,$color1,$color2);
     }
 
     function Bevel($x1,$y1,$x2,$y2,$depth=2,$color1='white@0.4',$color2='black@0.5') {
-        $this->PushColor($color1);
-        for( $i=0; $i < $depth; ++$i ) {
-            $this->Line($x1+$i,$y1+$i,$x1+$i,$y2-$i);
-            $this->Line($x1+$i,$y1+$i,$x2-$i,$y1+$i);
-        }
-        $this->PopColor();
-        
-        $this->PushColor($color2);
-        for( $i=0; $i < $depth; ++$i ) {
-            $this->Line($x1+$i,$y2-$i,$x2-$i,$y2-$i);
-            $this->Line($x2-$i,$y1+$i,$x2-$i,$y2-$i-1);
-        }
-        $this->PopColor();
+        $this->PushColor($color1);
+        for( $i=0; $i < $depth; ++$i ) {
+            $this->Line($x1+$i,$y1+$i,$x1+$i,$y2-$i);
+            $this->Line($x1+$i,$y1+$i,$x2-$i,$y1+$i);
+        }
+        $this->PopColor();
+
+        $this->PushColor($color2);
+        for( $i=0; $i < $depth; ++$i ) {
+            $this->Line($x1+$i,$y2-$i,$x2-$i,$y2-$i);
+            $this->Line($x2-$i,$y1+$i,$x2-$i,$y2-$i-1);
+        }
+        $this->PopColor();
     }
 
     function StyleLineTo($x,$y) {
-        $this->StyleLine($this->lastx,$this->lasty,$x,$y);
-        $this->lastx=$x;
-        $this->lasty=$y;
-    }
-        
+        $this->StyleLine($this->lastx,$this->lasty,$x,$y);
+        $this->lastx=$x;
+        $this->lasty=$y;
+    }
+
     function LineTo($x,$y) {
-        $this->Line($this->lastx,$this->lasty,$x,$y);
-        $this->lastx=$x;
-        $this->lasty=$y;
-    }
-        
+        $this->Line($this->lastx,$this->lasty,$x,$y);
+        $this->lastx=$x;
+        $this->lasty=$y;
+    }
+
     function Point($x,$y) {
-        imagesetpixel($this->img,round($x),round($y),$this->current_color);
-    }
-        
+        imagesetpixel($this->img,round($x),round($y),$this->current_color);
+    }
+
     function Fill($x,$y) {
-        imagefill($this->img,round($x),round($y),$this->current_color);
+        imagefill($this->img,round($x),round($y),$this->current_color);
     }
 
     function FillToBorder($x,$y,$aBordColor) {
-        $bc = $this->rgb->allocate($aBordColor);
-        if( $bc == -1 ) {
-            JpGraphError::RaiseL(25106);//('Image::FillToBorder : Can not allocate more colors');
-        }
-        imagefilltoborder($this->img,round($x),round($y),$bc,$this->current_color);
+        $bc = $this->rgb->allocate($aBordColor);
+        if( $bc == -1 ) {
+            JpGraphError::RaiseL(25106);//('Image::FillToBorder : Can not allocate more colors');
+        }
+        imagefilltoborder($this->img,round($x),round($y),$bc,$this->current_color);
     }
 
     function SetExpired($aFlg=true) {
-        $this->expired = $aFlg;
-    }
-        
+        $this->expired = $aFlg;
+    }
+
     // Generate image header
     function Headers() {
-        
-        // In case we are running from the command line with the client version of
-        // PHP we can't send any headers.
-        $sapi = php_sapi_name();
-        if( $sapi == 'cli' )
-            return;
-
-        // These parameters are set by headers_sent() but they might cause
-        // an undefined variable error unless they are initilized
-        $file='';
-        $lineno='';
-        if( headers_sent($file,$lineno) ) {
-            $file=basename($file);          
-            $t = new ErrMsgText();
-            $msg = $t->Get(10,$file,$lineno);
-            die($msg);
-        }       
-        
-        if ($this->expired) {
-            header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
-            header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
-            header("Cache-Control: no-cache, must-revalidate");
-            header("Pragma: no-cache");
-        }
-        header("Content-type: image/$this->img_format");
+
+        // In case we are running from the command line with the client version of
+        // PHP we can't send any headers.
+        $sapi = php_sapi_name();
+        if( $sapi == 'cli' ) return;
+
+        // These parameters are set by headers_sent() but they might cause
+        // an undefined variable error unless they are initilized
+        $file='';
+        $lineno='';
+        if( headers_sent($file,$lineno) ) {
+            $file=basename($file);
+            $t = new ErrMsgText();
+            $msg = $t->Get(10,$file,$lineno);
+            die($msg);
+        }
+
+        if ($this->expired) {
+            header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
+            header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
+            header("Cache-Control: no-cache, must-revalidate");
+            header("Pragma: no-cache");
+        }
+        header("Content-type: image/$this->img_format");
     }
 
     // Adjust image quality for formats that allow this
     function SetQuality($q) {
-        $this->quality = $q;
-    }
-        
+        $this->quality = $q;
+    }
+
     // Stream image to browser or to file
-    function Stream($aFile="") {
-        $func="image".$this->img_format;
-        if( $this->img_format=="jpeg" && $this->quality != null ) {
-            $res = @$func($this->img,$aFile,$this->quality);
-        }
-        else {
-            if( $aFile != "" ) {
-                $res = @$func($this->img,$aFile);
-                if( !$res )
-                    JpGraphError::RaiseL(25107,$aFile);//("Can't write to file '$aFile'. Check that the process running PHP has enough permission.");
-            }
-            else {
-                $res = @$func($this->img);
-                if( !$res )
-                    JpGraphError::RaiseL(25108);//("Can't stream image. This is most likely due to a faulty PHP/GD setup. Try to recompile PHP and use the built-in GD library that comes with PHP.");
+    function Stream($aFile=NULL) {
+        $this->DoSupersampling();
+
+        $func="image".$this->img_format;
+        if( $this->img_format=="jpeg" && $this->quality != null ) {
+            $res = @$func($this->img,$aFile,$this->quality);
+                        
+                        if(!$res){
+                                if($aFile != NULL){     
+                    JpGraphError::RaiseL(25107,$aFile);//("Can't write to file '$aFile'. Check that the process running PHP has enough permission.");
+                                }else{
+                    JpGraphError::RaiseL(25108);//("Can't stream image. This is most likely due to a faulty PHP/GD setup. Try to recompile PHP and use the built-in GD library that comes with PHP.");
+                                }
                 
-            }
-        }
-    }
-                
-    // Clear resource tide up by image
+                        }
+                }
+        else {
+            if( $aFile != NULL ) {
+                $res = @$func($this->img,$aFile);
+                if( !$res ) {
+                    JpGraphError::RaiseL(25107,$aFile);//("Can't write to file '$aFile'. Check that the process running PHP has enough permission.");
+                }
+            }
+            else {
+                $res = @$func($this->img);
+                if( !$res ) {
+                    JpGraphError::RaiseL(25108);//("Can't stream image. This is most likely due to a faulty PHP/GD setup. Try to recompile PHP and use the built-in GD library that comes with PHP.");
+                }
+
+            }
+        }
+    }
+
+    // Do SuperSampling using $scale
+    function DoSupersampling() {
+        if (SUPERSAMPLING_SCALE <= 1) {
+            return $this->img;
+        }
+
+        $dst_img = @imagecreatetruecolor($this->original_width, $this->original_height);
+        imagecopyresampled($dst_img, $this->img, 0, 0, 0, 0, $this->original_width, $this->original_height, $this->width, $this->height);
+        $this->Destroy();
+        return $this->img = $dst_img;
+    }
+
+    // Clear resources used by image (this is normally not used since all resources are/should be
+    // returned when the script terminates
     function Destroy() {
-        imagedestroy($this->img);
-    }
-        
+        imagedestroy($this->img);
+    }
+
     // Specify image format. Note depending on your installation
     // of PHP not all formats may be supported.
-    function SetImgFormat($aFormat,$aQuality=75) {              
-        $this->quality = $aQuality;
-        $aFormat = strtolower($aFormat);
-        $tst = true;
-        $supported = imagetypes();
-        if( $aFormat=="auto" ) {
-            if( $supported & IMG_PNG )
-                $this->img_format="png";
-            elseif( $supported & IMG_JPG )
-                $this->img_format="jpeg";
-            elseif( $supported & IMG_GIF )
-                $this->img_format="gif";
-            elseif( $supported & IMG_WBMP )
-                $this->img_format="wbmp";
-            elseif( $supported & IMG_XPM )
-                $this->img_format="xpm";
-            else
-                JpGraphError::RaiseL(25109);//("Your PHP (and GD-lib) installation does not appear to support any known graphic formats. You need to first make sure GD is compiled as a module to PHP. If you also want to use JPEG images you must get the JPEG library. Please see the PHP docs for details.");
-                                
-            return true;
-        }
-        else {
-            if( $aFormat=="jpeg" || $aFormat=="png" || $aFormat=="gif" ) {
-                if( $aFormat=="jpeg" && !($supported & IMG_JPG) )
-                    $tst=false;
-                elseif( $aFormat=="png" && !($supported & IMG_PNG) ) 
-                    $tst=false;
-                elseif( $aFormat=="gif" && !($supported & IMG_GIF) )    
-                    $tst=false;
-                elseif( $aFormat=="wbmp" && !($supported & IMG_WBMP) )  
-                    $tst=false;
-                elseif( $aFormat=="xpm" && !($supported & IMG_XPM) )    
-                    $tst=false;
-                else {
-                    $this->img_format=$aFormat;
-                    return true;
-                }
-            }
-            else 
-                $tst=false;
-            if( !$tst )
-                JpGraphError::RaiseL(25110,$aFormat);//(" Your PHP installation does not support the chosen graphic format: $aFormat");
-        }
-    }   
+    function SetImgFormat($aFormat,$aQuality=75) {
+        $this->quality = $aQuality;
+        $aFormat = strtolower($aFormat);
+        $tst = true;
+        $supported = imagetypes();
+        if( $aFormat=="auto" ) {
+            if( $supported & IMG_PNG )      $this->img_format="png";
+            elseif( $supported & IMG_JPG )  $this->img_format="jpeg";
+            elseif( $supported & IMG_GIF )  $this->img_format="gif";
+            elseif( $supported & IMG_WBMP ) $this->img_format="wbmp";
+            elseif( $supported & IMG_XPM )  $this->img_format="xpm";
+            else {
+                JpGraphError::RaiseL(25109);//("Your PHP (and GD-lib) installation does not appear to support any known graphic formats. You need to first make sure GD is compiled as a module to PHP. If you also want to use JPEG images you must get the JPEG library. Please see the PHP docs for details.");
+            }
+            return true;
+        }
+        else {
+            if( $aFormat=="jpeg" || $aFormat=="png" || $aFormat=="gif" ) {
+                if( $aFormat=="jpeg" && !($supported & IMG_JPG) )       $tst=false;
+                elseif( $aFormat=="png" && !($supported & IMG_PNG) )    $tst=false;
+                elseif( $aFormat=="gif" && !($supported & IMG_GIF) )    $tst=false;
+                elseif( $aFormat=="wbmp" && !($supported & IMG_WBMP) )  $tst=false;
+                elseif( $aFormat=="xpm" && !($supported & IMG_XPM) )    $tst=false;
+                else {
+                    $this->img_format=$aFormat;
+                    return true;
+                }
+            }
+            else {
+                $tst=false;
+            }
+            if( !$tst ) {
+                JpGraphError::RaiseL(25110,$aFormat);//(" Your PHP installation does not support the chosen graphic format: $aFormat");
+            }
+        }
+    }
+
+    /**
+    * Draw Line
+    */
+    function DrawLine($im, $x1, $y1, $x2, $y2, $weight, $color) {
+        if ($weight == 1) {
+            return imageline($im,$x1,$y1,$x2,$y2,$color);
+        }
+
+        $angle=(atan2(($y1 - $y2), ($x2 - $x1))); 
+
+        $dist_x = $weight * (sin($angle)) / 2;
+        $dist_y = $weight * (cos($angle)) / 2;
+        
+        $p1x=ceil(($x1 + $dist_x));
+        $p1y=ceil(($y1 + $dist_y));
+        $p2x=ceil(($x2 + $dist_x));
+        $p2y=ceil(($y2 + $dist_y));
+        $p3x=ceil(($x2 - $dist_x));
+        $p3y=ceil(($y2 - $dist_y));
+        $p4x=ceil(($x1 - $dist_x));
+        $p4y=ceil(($y1 - $dist_y));
+
+        $array=array($p1x,$p1y,$p2x,$p2y,$p3x,$p3y,$p4x,$p4y);
+        imagefilledpolygon ( $im, $array, (count($array)/2), $color );
+
+        // for antialias
+        imageline($im, $p1x, $p1y, $p2x, $p2y, $color);
+        imageline($im, $p3x, $p3y, $p4x, $p4y, $color);
+        return;
+
+
+
+          return imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
+      $weight = 8;
+        if ($weight <= 1) {
+          return imageline($this->img,$x1,$y1,$x2,$y2,$this->current_color);
+        }
+
+        $pts = array();
+
+        $weight /= 2;
+
+        if ($y2 - $y1 == 0) {
+            // x line
+            $pts = array();
+            $pts[] = $x1; $pts[] = $y1 - $weight;
+            $pts[] = $x1; $pts[] = $y1 + $weight;
+            $pts[] = $x2; $pts[] = $y2 + $weight;
+            $pts[] = $x2; $pts[] = $y2 - $weight;
+
+        } elseif ($x2 - $x1 == 0) {
+            // y line
+            $pts = array();
+            $pts[] = $x1 - $weight; $pts[] = $y1;
+            $pts[] = $x1 + $weight; $pts[] = $y1;
+            $pts[] = $x2 + $weight; $pts[] = $y2;
+            $pts[] = $x2 - $weight; $pts[] = $y2;
+
+        } else {
+            
+            var_dump($x1, $x2, $y1, $y2);
+            $length = sqrt(pow($x2 - $x1, 2) + pow($y2 - $y1, 2));
+            var_dump($length);exit;
+            exit;
+  
+/*
+            $lean = ($y2 - $y1) / ($x2 - $x1);
+            $lean2 = -1 / $lean;
+            $sin = $lean / ($y2 - $y1);
+            $cos = $lean / ($x2 - $x1);
+
+            $pts[] = $x1 + (-$weight * $sin); $pts[] = $y1 + (-$weight * $cos);
+            $pts[] = $x1 + (+$weight * $sin); $pts[] = $y1 + (+$weight * $cos);
+            $pts[] = $x2 + (+$weight * $sin); $pts[] = $y2 + (+$weight * $cos);
+            $pts[] = $x2 + (-$weight * $sin); $pts[] = $y2 + (-$weight * $cos);
+*/
+        }
+
+//print_r($pts);exit;
+        if (count($pts)/2 < 3) {
+            return;
+        } 
+
+        imagesetthickness($im, 1);
+        imagefilledpolygon($im, $pts,count($pts)/2, $color);
+
+
+        $weight *= 2;
+
+//        $this->DrawImageSmoothArc($im, $x1, $y1, $weight, $weight, 0, 360, $color);
+//        $this->DrawImageSmoothArc($im, $x2, $y2, $weight, $weight, 0, 360, $color);
+    }
+
+
+    function DrawImageSmoothArc($im, $xc, $yc, $w, $h, $s, $e, $color, $style = null) {
+        $tmp = $s;
+        $s = (360 - $e) / 180 * M_PI;
+        $e = (360 - $tmp) / 180 * M_PI;
+        return imageSmoothArc($im, round($xc), round($yc), round($w), round($h), $this->CreateColorForImageSmoothArc($color), $s, $e);
+    }
+
+    function CreateColorForImageSmoothArc($color) {
+        $alpha = $color >> 24 & 0xFF; 
+        $red   = $color >> 16 & 0xFF;
+        $green = $color >> 8 & 0xFF;
+        $blue  = $color & 0xFF;
+
+//var_dump($alpha, $red, $green, $blue);exit;
+
+        return array($red, $green, $blue, $alpha);
+    }
+
+    function imageSmoothCircle( &$img, $cx, $cy, $cr, $color ) {
+        $ir = $cr;
+        $ix = 0;
+        $iy = $ir;
+        $ig = 2 * $ir - 3;
+        $idgr = -6;
+        $idgd = 4 * $ir - 10;
+        $fill = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], 0 );
+        imageLine( $img, $cx + $cr - 1, $cy, $cx, $cy, $fill );
+        imageLine( $img, $cx - $cr + 1, $cy, $cx - 1, $cy, $fill );
+        imageLine( $img, $cx, $cy + $cr - 1, $cx, $cy + 1, $fill );
+        imageLine( $img, $cx, $cy - $cr + 1, $cx, $cy - 1, $fill );
+        $draw = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], 42 );
+        imageSetPixel( $img, $cx + $cr, $cy, $draw );
+        imageSetPixel( $img, $cx - $cr, $cy, $draw );
+        imageSetPixel( $img, $cx, $cy + $cr, $draw );
+        imageSetPixel( $img, $cx, $cy - $cr, $draw );
+        while ( $ix <= $iy - 2 ) {
+            if ( $ig < 0 ) {
+                $ig += $idgd;
+                $idgd -= 8;
+                $iy--;
+            } else {
+                $ig += $idgr;
+                $idgd -= 4;
+            }
+            $idgr -= 4;
+            $ix++;
+            imageLine( $img, $cx + $ix, $cy + $iy - 1, $cx + $ix, $cy + $ix, $fill );
+            imageLine( $img, $cx + $ix, $cy - $iy + 1, $cx + $ix, $cy - $ix, $fill );
+            imageLine( $img, $cx - $ix, $cy + $iy - 1, $cx - $ix, $cy + $ix, $fill );
+            imageLine( $img, $cx - $ix, $cy - $iy + 1, $cx - $ix, $cy - $ix, $fill );
+            imageLine( $img, $cx + $iy - 1, $cy + $ix, $cx + $ix, $cy + $ix, $fill );
+            imageLine( $img, $cx + $iy - 1, $cy - $ix, $cx + $ix, $cy - $ix, $fill );
+            imageLine( $img, $cx - $iy + 1, $cy + $ix, $cx - $ix, $cy + $ix, $fill );
+            imageLine( $img, $cx - $iy + 1, $cy - $ix, $cx - $ix, $cy - $ix, $fill );
+            $filled = 0;
+            for ( $xx = $ix - 0.45; $xx < $ix + 0.5; $xx += 0.2 ) {
+                for ( $yy = $iy - 0.45; $yy < $iy + 0.5; $yy += 0.2 ) {
+                    if ( sqrt( pow( $xx, 2 ) + pow( $yy, 2 ) ) < $cr ) $filled += 4;
+                }
+            }
+            $draw = imageColorExactAlpha( $img, $color[ 'R' ], $color[ 'G' ], $color[ 'B' ], ( 100 - $filled ) );
+            imageSetPixel( $img, $cx + $ix, $cy + $iy, $draw );
+            imageSetPixel( $img, $cx + $ix, $cy - $iy, $draw );
+            imageSetPixel( $img, $cx - $ix, $cy + $iy, $draw );
+            imageSetPixel( $img, $cx - $ix, $cy - $iy, $draw );
+            imageSetPixel( $img, $cx + $iy, $cy + $ix, $draw );
+            imageSetPixel( $img, $cx + $iy, $cy - $ix, $draw );
+            imageSetPixel( $img, $cx - $iy, $cy + $ix, $draw );
+            imageSetPixel( $img, $cx - $iy, $cy - $ix, $draw );
+        }
+    }
+
+    function __get($name) {
+
+        if (strpos($name, 'raw_') !== false) {
+            // if $name == 'raw_left_margin' , return $this->_left_margin;
+            $variable_name = '_' . str_replace('raw_', '', $name);
+            return $this->$variable_name;
+        }
+
+        $variable_name = '_' . $name; 
+
+        if (isset($this->$variable_name)) {
+            return $this->$variable_name * SUPERSAMPLING_SCALE;
+        } else {
+            JpGraphError::RaiseL('25132', $name);
+        } 
+    }
+
+    function __set($name, $value) {
+        $this->{'_'.$name} = $value;
+    }
+
 } // CLASS
 
@@ -1303 +1948 @@
 class RotImage extends Image {
     public $a=0;
-    public $dx=0,$dy=0,$transx=0,$transy=0; 
+    public $dx=0,$dy=0,$transx=0,$transy=0;
     private $m=array();
-        
-    function RotImage($aWidth,$aHeight,$a=0,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
-        $this->Image($aWidth,$aHeight,$aFormat,$aSetAutoMargin);
-        $this->dx=$this->left_margin+$this->plotwidth/2;
-        $this->dy=$this->top_margin+$this->plotheight/2;
-        $this->SetAngle($a);    
-    }
-        
+
+    function __construct($aWidth,$aHeight,$a=0,$aFormat=DEFAULT_GFORMAT,$aSetAutoMargin=true) {
+        parent::__construct($aWidth,$aHeight,$aFormat,$aSetAutoMargin);
+        $this->dx=$this->width/2;
+        $this->dy=$this->height/2;
+        $this->SetAngle($a);
+    }
+
     function SetCenter($dx,$dy) {
-        $old_dx = $this->dx;
-        $old_dy = $this->dy;
-        $this->dx=$dx;
-        $this->dy=$dy;
-        $this->SetAngle($this->a);
-        return array($old_dx,$old_dy);
-    }
-        
+        $old_dx = $this->dx;
+        $old_dy = $this->dy;
+        $this->dx=$dx;
+        $this->dy=$dy;
+        $this->SetAngle($this->a);
+        return array($old_dx,$old_dy);
+    }
+
     function SetTranslation($dx,$dy) {
-        $old = array($this->transx,$this->transy);
-        $this->transx = $dx;
-        $this->transy = $dy;
-        return $old;
+        $old = array($this->transx,$this->transy);
+        $this->transx = $dx;
+        $this->transy = $dy;
+        return $old;
     }
 
     function UpdateRotMatrice()  {
-        $a = $this->a;
-        $a *= M_PI/180;
-        $sa=sin($a); $ca=cos($a);               
-        // Create the rotation matrix
-        $this->m[0][0] = $ca;
-        $this->m[0][1] = -$sa;
-        $this->m[0][2] = $this->dx*(1-$ca) + $sa*$this->dy ;
-        $this->m[1][0] = $sa;
-        $this->m[1][1] = $ca;
-        $this->m[1][2] = $this->dy*(1-$ca) - $sa*$this->dx ;
+        $a = $this->a;
+        $a *= M_PI/180;
+        $sa=sin($a); $ca=cos($a);
+        // Create the rotation matrix
+        $this->m[0][0] = $ca;
+        $this->m[0][1] = -$sa;
+        $this->m[0][2] = $this->dx*(1-$ca) + $sa*$this->dy ;
+        $this->m[1][0] = $sa;
+        $this->m[1][1] = $ca;
+        $this->m[1][2] = $this->dy*(1-$ca) - $sa*$this->dx ;
     }
 
     function SetAngle($a) {
-        $tmp = $this->a;
-        $this->a = $a;
-        $this->UpdateRotMatrice();
-        return $tmp;
+        $tmp = $this->a;
+        $this->a = $a;
+        $this->UpdateRotMatrice();
+        return $tmp;
     }
 
     function Circle($xc,$yc,$r) {
-        list($xc,$yc) = $this->Rotate($xc,$yc);
-        parent::Circle($xc,$yc,$r);
+        list($xc,$yc) = $this->Rotate($xc,$yc);
+        parent::Circle($xc,$yc,$r);
     }
 
     function FilledCircle($xc,$yc,$r) {
-        list($xc,$yc) = $this->Rotate($xc,$yc);
-        parent::FilledCircle($xc,$yc,$r);
-    }
-
-        
+        list($xc,$yc) = $this->Rotate($xc,$yc);
+        parent::FilledCircle($xc,$yc,$r);
+    }
+
+
     function Arc($xc,$yc,$w,$h,$s,$e) {
-        list($xc,$yc) = $this->Rotate($xc,$yc);
-        $s += $this->a;
-        $e += $this->a;
-        parent::Arc($xc,$yc,$w,$h,$s,$e);
+        list($xc,$yc) = $this->Rotate($xc,$yc);
+        $s += $this->a;
+        $e += $this->a;
+        parent::Arc($xc,$yc,$w,$h,$s,$e);
     }
 
     function FilledArc($xc,$yc,$w,$h,$s,$e,$style='') {
-        list($xc,$yc) = $this->Rotate($xc,$yc);
-        $s += $this->a;
-        $e += $this->a;
-        parent::FilledArc($xc,$yc,$w,$h,$s,$e);
+        list($xc,$yc) = $this->Rotate($xc,$yc);
+        $s += $this->a;
+        $e += $this->a;
+        parent::FilledArc($xc,$yc,$w,$h,$s,$e);
     }
 
     function SetMargin($lm,$rm,$tm,$bm) {
-        parent::SetMargin($lm,$rm,$tm,$bm);
-        $this->dx=$this->left_margin+$this->plotwidth/2;
-        $this->dy=$this->top_margin+$this->plotheight/2;
-        $this->UpdateRotMatrice();
-    }
-        
+        parent::SetMargin($lm,$rm,$tm,$bm);
+        $this->UpdateRotMatrice();
+    }
+
     function Rotate($x,$y) {
-        // Optimization. Ignore rotation if Angle==0 || Angle==360
-        if( $this->a == 0 || $this->a == 360 ) {
-            return array($x + $this->transx, $y + $this->transy );
-        }
-        else {
-            $x1=round($this->m[0][0]*$x + $this->m[0][1]*$y,1) + $this->m[0][2] + $this->transx;
-            $y1=round($this->m[1][0]*$x + $this->m[1][1]*$y,1) + $this->m[1][2] + $this->transy;
-            return array($x1,$y1);
-        }
-    }
-        
+        // Optimization. Ignore rotation if Angle==0 || Angle==360
+        if( $this->a == 0 || $this->a == 360 ) {
+            return array($x + $this->transx, $y + $this->transy );
+        }
+        else {
+            $x1=round($this->m[0][0]*$x + $this->m[0][1]*$y,1) + $this->m[0][2] + $this->transx;
+            $y1=round($this->m[1][0]*$x + $this->m[1][1]*$y,1) + $this->m[1][2] + $this->transy;
+            return array($x1,$y1);
+        }
+    }
+
     function CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth=-1,$fromHeight=-1,$aMix=100) {
-        list($toX,$toY) = $this->Rotate($toX,$toY);
-        parent::CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight,$aMix);
+        list($toX,$toY) = $this->Rotate($toX,$toY);
+        parent::CopyMerge($fromImg,$toX,$toY,$fromX,$fromY,$toWidth,$toHeight,$fromWidth,$fromHeight,$aMix);
 
     }
 
     function ArrRotate($pnts) {
-        $n = count($pnts)-1;
-        for($i=0; $i < $n; $i+=2) {
-            list ($x,$y) = $this->Rotate($pnts[$i],$pnts[$i+1]);
-            $pnts[$i] = $x; $pnts[$i+1] = $y;
-        }
-        return $pnts;
+        $n = count($pnts)-1;
+        for($i=0; $i < $n; $i+=2) {
+            list ($x,$y) = $this->Rotate($pnts[$i],$pnts[$i+1]);
+            $pnts[$i] = $x; $pnts[$i+1] = $y;
+        }
+        return $pnts;
     }
 
     function DashedLine($x1,$y1,$x2,$y2,$dash_length=1,$dash_space=4) {
-        list($x1,$y1) = $this->Rotate($x1,$y1);
-        list($x2,$y2) = $this->Rotate($x2,$y2);
-        parent::DashedLine($x1,$y1,$x2,$y2,$dash_length,$dash_space);
-    }
-        
+        list($x1,$y1) = $this->Rotate($x1,$y1);
+        list($x2,$y2) = $this->Rotate($x2,$y2);
+        parent::DashedLine($x1,$y1,$x2,$y2,$dash_length,$dash_space);
+    }
+
     function Line($x1,$y1,$x2,$y2) {
-        list($x1,$y1) = $this->Rotate($x1,$y1);
-        list($x2,$y2) = $this->Rotate($x2,$y2);
-        parent::Line($x1,$y1,$x2,$y2);
+        list($x1,$y1) = $this->Rotate($x1,$y1);
+        list($x2,$y2) = $this->Rotate($x2,$y2);
+        parent::Line($x1,$y1,$x2,$y2);
     }
 
     function Rectangle($x1,$y1,$x2,$y2) {
-        // Rectangle uses Line() so it will be rotated through that call
-        parent::Rectangle($x1,$y1,$x2,$y2);
-    }
-        
+        // Rectangle uses Line() so it will be rotated through that call
+        parent::Rectangle($x1,$y1,$x2,$y2);
+    }
+
     function FilledRectangle($x1,$y1,$x2,$y2) {
-        if( $y1==$y2 || $x1==$x2 )
-            $this->Line($x1,$y1,$x2,$y2);
-        else 
-            $this->FilledPolygon(array($x1,$y1,$x2,$y1,$x2,$y2,$x1,$y2));
-    }
-        
+        if( $y1==$y2 || $x1==$x2 )
+        $this->Line($x1,$y1,$x2,$y2);
+        else
+        $this->FilledPolygon(array($x1,$y1,$x2,$y1,$x2,$y2,$x1,$y2));
+    }
+
     function Polygon($pnts,$closed=FALSE,$fast=FALSE) {
-        // Polygon uses Line() so it will be rotated through that call unless
-        // fast drawing routines are used in which case a rotate is needed
-        if( $fast ) {
-            parent::Polygon($this->ArrRotate($pnts));
-        }
-        else
-            parent::Polygon($pnts,$closed,$fast);
-    }
-        
+        // Polygon uses Line() so it will be rotated through that call unless
+        // fast drawing routines are used in which case a rotate is needed
+        if( $fast ) {
+            parent::Polygon($this->ArrRotate($pnts));
+        }
+        else {
+            parent::Polygon($pnts,$closed,$fast);
+        }
+    }
+
     function FilledPolygon($pnts) {
-        parent::FilledPolygon($this->ArrRotate($pnts));
-    }
-        
+        parent::FilledPolygon($this->ArrRotate($pnts));
+    }
+
     function Point($x,$y) {
-        list($xp,$yp) = $this->Rotate($x,$y);
-        parent::Point($xp,$yp);
-    }
-        
+        list($xp,$yp) = $this->Rotate($x,$y);
+        parent::Point($xp,$yp);
+    }
+
     function StrokeText($x,$y,$txt,$dir=0,$paragraph_align="left",$debug=false) {
-        list($xp,$yp) = $this->Rotate($x,$y);
-        return parent::StrokeText($xp,$yp,$txt,$dir,$paragraph_align,$debug);
+        list($xp,$yp) = $this->Rotate($x,$y);
+        return parent::StrokeText($xp,$yp,$txt,$dir,$paragraph_align,$debug);
     }
 }
 
-//===================================================
+//=======================================================================
 // CLASS ImgStreamCache
-// Description: Handle caching of graphs to files
-//===================================================
+// Description: Handle caching of graphs to files. All image output goes
+//              through this class
+//=======================================================================
 class ImgStreamCache {
-    private $cache_dir, $img=null, $timeout=0;  // Infinite timeout
+    private $cache_dir, $timeout=0;  // Infinite timeout
     //---------------
     // CONSTRUCTOR
-    function ImgStreamCache($aImg, $aCacheDir=CACHE_DIR) {
-        $this->img = $aImg;
-        $this->cache_dir = $aCacheDir;
-    }
-
-//---------------
-// PUBLIC METHODS       
+    function __construct($aCacheDir=CACHE_DIR) {
+        $this->cache_dir = $aCacheDir;
+    }
+
+    //---------------
+    // PUBLIC METHODS
 
     // Specify a timeout (in minutes) for the file. If the file is older then the
@@ -1478 +2122 @@
     // timeout is set to -1 this is the same as infinite small timeout
     function SetTimeout($aTimeout) {
-        $this->timeout=$aTimeout;       
-    }
-        
+        $this->timeout=$aTimeout;
+    }
+
     // Output image to browser and also write it to the cache
     function PutAndStream($aImage,$aCacheFileName,$aInline,$aStrokeFileName) {
-        // Some debugging code to brand the image with numbe of colors
-        // used
-        GLOBAL $gJpgBrandTiming;
-
-        if( $gJpgBrandTiming ) {
-            global $tim;
-            $t=$tim->Pop()/1000.0;
-            $c=$aImage->SetColor("black");
-            $t=sprintf(BRAND_TIME_FORMAT,round($t,3));
-            imagestring($this->img->img,2,5,$this->img->height-20,$t,$c);                       
-        }
-
-        // Check if we should stroke the image to an arbitrary file
-        if( _FORCE_IMGTOFILE ) {
-            $aStrokeFileName = _FORCE_IMGDIR.GenImgName();
-        }
-
-        if( $aStrokeFileName!="" ) {
-            if( $aStrokeFileName == "auto" )
-                $aStrokeFileName = GenImgName();
-            if( file_exists($aStrokeFileName) ) {
-                // Delete the old file
-                if( !@unlink($aStrokeFileName) )
-                    JpGraphError::RaiseL(25111,$aStrokeFileName);//(" Can't delete cached image $aStrokeFileName. Permission problem?");
-            }
-            $aImage->Stream($aStrokeFileName);
-            return;
-        }
-
-        if( $aCacheFileName != "" && USE_CACHE) {
-
-            $aCacheFileName = $this->cache_dir . $aCacheFileName;
-            if( file_exists($aCacheFileName) ) {
-                if( !$aInline ) {
-                    // If we are generating image off-line (just writing to the cache)
-                    // and the file exists and is still valid (no timeout)
-                    // then do nothing, just return.
-                    $diff=time()-filemtime($aCacheFileName);
-                    if( $diff < 0 )
-                        JpGraphError::RaiseL(25112,$aCacheFileName);//(" Cached imagefile ($aCacheFileName) has file date in the future!!");
-                    if( $this->timeout>0 && ($diff <= $this->timeout*60) ) 
-                        return;         
-                }                       
-                if( !@unlink($aCacheFileName) )
-                    JpGraphError::RaiseL(25113,$aStrokeFileName);//(" Can't delete cached image $aStrokeFileName. Permission problem?");
-                $aImage->Stream($aCacheFileName);       
-            }
-            else {
-                $this->MakeDirs(dirname($aCacheFileName));
-                if( !is_writeable(dirname($aCacheFileName)) ) {
-                    JpGraphError::RaiseL(25114,$aCacheFileName);//('PHP has not enough permissions to write to the cache file '.$aCacheFileName.'. Please make sure that the user running PHP has write permission for this file if you wan to use the cache system with JpGraph.');
-                }
-                $aImage->Stream($aCacheFileName);
-            }
-                        
-            $res=true;
-            // Set group to specified
-            if( CACHE_FILE_GROUP != "" )
-                $res = @chgrp($aCacheFileName,CACHE_FILE_GROUP);
-            if( CACHE_FILE_MOD != "" )
-                $res = @chmod($aCacheFileName,CACHE_FILE_MOD);
-            if( !$res )
-                JpGraphError::RaiseL(25115,$aStrokeFileName);//(" Can't set permission for cached image $aStrokeFileName. Permission problem?");
-                        
-            $aImage->Destroy();
-            if( $aInline ) {
-                if ($fh = @fopen($aCacheFileName, "rb") ) {
-                    $this->img->Headers();
-                    fpassthru($fh);
-                    return;
-                }
-                else
-                    JpGraphError::RaiseL(25116,$aFile);//(" Cant open file from cache [$aFile]"); 
-            }
-        }
-        elseif( $aInline ) {
-            $this->img->Headers();                      
-            $aImage->Stream();  
-            return;
-        }
-    }
-        
+
+        // Check if we should always stroke the image to a file
+        if( _FORCE_IMGTOFILE ) {
+            $aStrokeFileName = _FORCE_IMGDIR.GenImgName();
+        }
+
+        if( $aStrokeFileName != '' ) {
+
+            if( $aStrokeFileName == 'auto' ) {
+                $aStrokeFileName = GenImgName();
+            }
+
+            if( file_exists($aStrokeFileName) ) {
+
+                // Wait for lock (to make sure no readers are trying to access the image)
+                $fd = fopen($aStrokeFileName,'w');
+                $lock = flock($fd, LOCK_EX);
+
+                // Since the image write routines only accepts a filename which must not
+                // exist we need to delete the old file first
+                if( !@unlink($aStrokeFileName) ) {
+                    $lock = flock($fd, LOCK_UN);
+                    JpGraphError::RaiseL(25111,$aStrokeFileName);
+                    //(" Can't delete cached image $aStrokeFileName. Permission problem?");
+                }
+                $aImage->Stream($aStrokeFileName);
+                $lock = flock($fd, LOCK_UN);
+                fclose($fd);
+
+            }
+            else {
+                $aImage->Stream($aStrokeFileName);
+            }
+
+            return;
+        }
+
+        if( $aCacheFileName != '' && USE_CACHE) {
+
+            $aCacheFileName = $this->cache_dir . $aCacheFileName;
+            if( file_exists($aCacheFileName) ) {
+                if( !$aInline ) {
+                    // If we are generating image off-line (just writing to the cache)
+                    // and the file exists and is still valid (no timeout)
+                    // then do nothing, just return.
+                    $diff=time()-filemtime($aCacheFileName);
+                    if( $diff < 0 ) {
+                        JpGraphError::RaiseL(25112,$aCacheFileName);
+                        //(" Cached imagefile ($aCacheFileName) has file date in the future!!");
+                    }
+                    if( $this->timeout>0 && ($diff <= $this->timeout*60) ) return;
+                }
+
+                // Wait for lock (to make sure no readers are trying to access the image)
+                $fd = fopen($aCacheFileName,'w');
+                $lock = flock($fd, LOCK_EX);
+
+                if( !@unlink($aCacheFileName) ) {
+                    $lock = flock($fd, LOCK_UN);
+                    JpGraphError::RaiseL(25113,$aStrokeFileName);
+                    //(" Can't delete cached image $aStrokeFileName. Permission problem?");
+                }
+                $aImage->Stream($aCacheFileName);
+                $lock = flock($fd, LOCK_UN);
+                fclose($fd);
+
+            }
+            else {
+                $this->MakeDirs(dirname($aCacheFileName));
+                if( !is_writeable(dirname($aCacheFileName)) ) {
+                    JpGraphError::RaiseL(25114,$aCacheFileName);
+                    //('PHP has not enough permissions to write to the cache file '.$aCacheFileName.'. Please make sure that the user running PHP has write permission for this file if you wan to use the cache system with JpGraph.');
+                }
+                $aImage->Stream($aCacheFileName);
+            }
+
+            $res=true;
+            // Set group to specified
+            if( CACHE_FILE_GROUP != '' ) {
+                $res = @chgrp($aCacheFileName,CACHE_FILE_GROUP);
+            }
+            if( CACHE_FILE_MOD != '' ) {
+                $res = @chmod($aCacheFileName,CACHE_FILE_MOD);
+            }
+            if( !$res ) {
+                JpGraphError::RaiseL(25115,$aStrokeFileName);
+                //(" Can't set permission for cached image $aStrokeFileName. Permission problem?");
+            }
+
+            $aImage->Destroy();
+            if( $aInline ) {
+                if ($fh = @fopen($aCacheFileName, "rb") ) {
+                    $aImage->Headers();
+                    fpassthru($fh);
+                    return;
+                }
+                else {
+                    JpGraphError::RaiseL(25116,$aFile);//(" Cant open file from cache [$aFile]");
+                }
+            }
+        }
+        elseif( $aInline ) {
+            $aImage->Headers();
+            $aImage->Stream();
+            return;
+        }
+    }
+
+    function IsValid($aCacheFileName) {
+        $aCacheFileName = $this->cache_dir.$aCacheFileName;
+        if ( USE_CACHE && file_exists($aCacheFileName) ) {
+            $diff=time()-filemtime($aCacheFileName);
+            if( $this->timeout>0 && ($diff > $this->timeout*60) ) {
+                return false;
+            }
+            else {
+                return true;
+            }
+        }
+        else {
+            return false;
+        }
+    }
+
+    function StreamImgFile($aImage,$aCacheFileName) {
+        $aCacheFileName = $this->cache_dir.$aCacheFileName;
+        if ( $fh = @fopen($aCacheFileName, 'rb') ) {
+            $lock = flock($fh, LOCK_SH);
+            $aImage->Headers();
+            fpassthru($fh);
+            $lock = flock($fh, LOCK_UN);
+            fclose($fh);
+            return true;
+        }
+        else {
+            JpGraphError::RaiseL(25117,$aCacheFileName);//(" Can't open cached image \"$aCacheFileName\" for reading.");
+        }
+    }
+
     // Check if a given image is in cache and in that case
     // pass it directly on to web browser. Return false if the
     // image file doesn't exist or exists but is to old
-    function GetAndStream($aCacheFileName) {
-        $aCacheFileName = $this->cache_dir.$aCacheFileName;              
-        if ( USE_CACHE && file_exists($aCacheFileName) && $this->timeout>=0 ) {
-            $diff=time()-filemtime($aCacheFileName);
-            if( $this->timeout>0 && ($diff > $this->timeout*60) ) {
-                return false;           
-            }
-            else {
-                if ($fh = @fopen($aCacheFileName, "rb")) {
-                    $this->img->Headers();
-                    fpassthru($fh);
-                    return true;
-                }
-                else
-                    JpGraphError::RaiseL(25117,$aCacheFileName);//(" Can't open cached image \"$aCacheFileName\" for reading.");
-            }
-        } 
-        return false;
-    }
-        
+    function GetAndStream($aImage,$aCacheFileName) {
+        if( $this->Isvalid($aCacheFileName) ) {
+            $this->StreamImgFile($aImage,$aCacheFileName);
+        }
+        else {
+            return false;
+        }
+    }
+
     //---------------
-    // PRIVATE METHODS  
+    // PRIVATE METHODS
     // Create all necessary directories in a path
     function MakeDirs($aFile) {
-        $dirs = array();
-        while ( !(file_exists($aFile)) ) {
-            $dirs[] = $aFile;
-            $aFile = dirname($aFile);
-        }
-        for ($i = sizeof($dirs)-1; $i>=0; $i--) {
-            if(! @mkdir($dirs[$i],0777) )
-                JpGraphError::RaiseL(25118,$aFile);//(" Can't create directory $aFile. Make sure PHP has write permission to this directory.");
-            // We also specify mode here after we have changed group. 
-            // This is necessary if Apache user doesn't belong the
-            // default group and hence can't specify group permission
-            // in the previous mkdir() call
-            if( CACHE_FILE_GROUP != "" ) {
-                $res=true;
-                $res =@chgrp($dirs[$i],CACHE_FILE_GROUP);
-                $res = @chmod($dirs[$i],0777);
-                if( !$res )
-                    JpGraphError::RaiseL(25119,$aFile);//(" Can't set permissions for $aFile. Permission problems?");
-            }
-        }
-        return true;
-    }   
+        $dirs = array();
+        // In order to better work when open_basedir is enabled
+        // we do not create directories in the root path
+        while ( $aFile != '/' && !(file_exists($aFile)) ) {
+            $dirs[] = $aFile.'/';
+            $aFile = dirname($aFile);
+        }
+        for ($i = sizeof($dirs)-1; $i>=0; $i--) {
+            if(! @mkdir($dirs[$i],0777) ) {
+                JpGraphError::RaiseL(25118,$aFile);//(" Can't create directory $aFile. Make sure PHP has write permission to this directory.");
+            }
+            // We also specify mode here after we have changed group.
+            // This is necessary if Apache user doesn't belong the
+            // default group and hence can't specify group permission
+            // in the previous mkdir() call
+            if( CACHE_FILE_GROUP != "" ) {
+                $res=true;
+                $res =@chgrp($dirs[$i],CACHE_FILE_GROUP);
+                $res = @chmod($dirs[$i],0777);
+                if( !$res ) {
+                    JpGraphError::RaiseL(25119,$aFile);//(" Can't set permissions for $aFile. Permission problems?");
+                }
+            }
+        }
+        return true;
+    }
 } // CLASS Cache
 
-
 ?>