pImage.class.php

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inc/pchart/pchart/class/pImage.class.php
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  1.  /*

  2.      pDraw - pChart core class

  3. 

  4.      Version     : 2.1.4

  5.      Made by     : Jean-Damien POGOLOTTI

  6.      Last Update : 19/01/2014

  7. 

  8.      This file can be distributed under the license you can find at :

  9. 

  10.                        http://www.pchart.net/license

  11. 

  12.      You can find the whole class documentation on the pChart web site.

  13.  */

  14. 

  15.  /* The GD extension is mandatory */

  16.  if (!extension_loaded('gd') && !extension_loaded('gd2'))

  17.   {

  18.    echo "GD extension must be loaded. \r\n";

  19.    exit();

  20.   }

  21. 

  22.  /* Image map handling */

  23.  define("IMAGE_MAP_STORAGE_FILE"	, 680001);

  24.  define("IMAGE_MAP_STORAGE_SESSION"	, 680002);

  25. 

  26.  /* Last generated chart layout */

  27.  define("CHART_LAST_LAYOUT_REGULAR"	, 680011);

  28.  define("CHART_LAST_LAYOUT_STACKED"	, 680012);

  29. 

  30.  /* ImageMap string delimiter */

  31.  define("IMAGE_MAP_DELIMITER"		, chr(1));

  32. 

  33.  class pImage extends pDraw

  34.   {

  35.    /* Image settings, size, quality, .. */

  36.    var $XSize		= NULL;				// Width of the picture

  37.    var $YSize		= NULL;				// Height of the picture

  38.    var $Picture		= NULL;				// GD picture object

  39.    var $Antialias	= TRUE;				// Turn antialias on or off

  40.    var $AntialiasQuality  = 0;				// Quality of the antialiasing implementation (0-1)

  41.    var $Mask		= "";				// Already drawn pixels mask (Filled circle implementation)

  42.    var $TransparentBackground = FALSE;			// Just to know if we need to flush the alpha channels when rendering

  43. 

  44.    /* Graph area settings */

  45.    var $GraphAreaX1	= NULL;				// Graph area X origin

  46.    var $GraphAreaY1	= NULL;				// Graph area Y origin

  47.    var $GraphAreaX2	= NULL;				// Graph area bottom right X position

  48.    var $GraphAreaY2	= NULL;				// Graph area bottom right Y position

  49. 

  50.    /* Scale settings */

  51.    var $ScaleMinDivHeight = 20;				// Minimum height for scame divs

  52. 

  53.    /* Font properties */

  54.    var $FontName	= "fonts/GeosansLight.ttf";	// Default font file

  55.    var $FontSize	= 12;				// Default font size

  56.    var $FontBox		= NULL;				// Return the bounding box of the last written string

  57.    var $FontColorR	= 0;				// Default color settings

  58.    var $FontColorG	= 0;				// Default color settings

  59.    var $FontColorB	= 0;				// Default color settings

  60.    var $FontColorA	= 100;				// Default transparency

  61. 

  62.    /* Shadow properties */

  63.    var $Shadow		= FALSE;			// Turn shadows on or off

  64.    var $ShadowX		= NULL;				// X Offset of the shadow

  65.    var $ShadowY		= NULL;				// Y Offset of the shadow

  66.    var $ShadowR		= NULL;				// R component of the shadow

  67.    var $ShadowG		= NULL;				// G component of the shadow

  68.    var $ShadowB		= NULL;				// B component of the shadow

  69.    var $Shadowa		= NULL;				// Alpha level of the shadow

  70. 

  71.    /* Image map */

  72.    var $ImageMap	= NULL;				// Aray containing the image map

  73.    var $ImageMapIndex	= "pChart";			// Name of the session array

  74.    var $ImageMapStorageMode = NULL;			// Save the current imagemap storage mode

  75.    var $ImageMapAutoDelete  = TRUE;			// Automatic deletion of the image map temp files

  76. 

  77.    /* Data Set */

  78.    var $DataSet		= NULL;				// Attached dataset

  79. 

  80.    /* Last generated chart info */

  81.    var $LastChartLayout	= CHART_LAST_LAYOUT_REGULAR;	// Last layout : regular or stacked

  82. 

  83.    /* Class constructor */

  84.    function pImage($XSize,$YSize,$DataSet=NULL,$TransparentBackground=FALSE)

  85.     {

  86.      $this->TransparentBackground = $TransparentBackground;

  87. 

  88.      if ( $DataSet != NULL ) { $this->DataSet = $DataSet; }

  89. 

  90.      $this->XSize   = $XSize;

  91.      $this->YSize   = $YSize;

  92.      $this->Picture = imagecreatetruecolor($XSize,$YSize);

  93. 

  94.      if ( $this->TransparentBackground )

  95.       {

  96.        imagealphablending($this->Picture,FALSE);

  97.        imagefilledrectangle($this->Picture, 0,0,$XSize, $YSize, imagecolorallocatealpha($this->Picture, 255, 255, 255, 127));

  98.        imagealphablending($this->Picture,TRUE);

  99.        imagesavealpha($this->Picture,true); 

  100.       }

  101.      else

  102.       {

  103.        $C_White = $this->AllocateColor($this->Picture,255,255,255);

  104.        imagefilledrectangle($this->Picture,0,0,$XSize,$YSize,$C_White);

  105.       }

  106.     }

  107. 

  108.    /* Enable / Disable and set shadow properties */

  109.    function setShadow($Enabled=TRUE,$Format="")

  110.     {

  111.      $X	    = isset($Format["X"]) ? $Format["X"] : 2;

  112.      $Y	    = isset($Format["Y"]) ? $Format["Y"] : 2;

  113.      $R	    = isset($Format["R"]) ? $Format["R"] : 0;

  114.      $G	    = isset($Format["G"]) ? $Format["G"] : 0;

  115.      $B	    = isset($Format["B"]) ? $Format["B"] : 0;

  116.      $Alpha = isset($Format["Alpha"]) ? $Format["Alpha"] : 10;

  117. 

  118.      $this->Shadow  = $Enabled;

  119.      $this->ShadowX = $X;

  120.      $this->ShadowY = $Y;

  121.      $this->ShadowR = $R;

  122.      $this->ShadowG = $G;

  123.      $this->ShadowB = $B;

  124.      $this->Shadowa = $Alpha;

  125.     }

  126. 

  127.    /* Set the graph area position */

  128.    function setGraphArea($X1,$Y1,$X2,$Y2)

  129.     {

  130.      if ( $X2 < $X1 || $X1 == $X2 || $Y2 < $Y1 || $Y1 == $Y2 ) { return(-1); }

  131. 

  132.      $this->GraphAreaX1 = $X1; $this->DataSet->Data["GraphArea"]["X1"] = $X1;

  133.      $this->GraphAreaY1 = $Y1; $this->DataSet->Data["GraphArea"]["Y1"] = $Y1;

  134.      $this->GraphAreaX2 = $X2; $this->DataSet->Data["GraphArea"]["X2"] = $X2;

  135.      $this->GraphAreaY2 = $Y2; $this->DataSet->Data["GraphArea"]["Y2"] = $Y2;

  136.     }

  137. 

  138.    /* Return the width of the picture */

  139.    function getWidth()

  140.     { return($this->XSize); }

  141. 

  142.    /* Return the heigth of the picture */

  143.    function getHeight()

  144.     { return($this->YSize); }

  145. 

  146.    /* Render the picture to a file */

  147.    function render($FileName)

  148.     {

  149.      if ( $this->TransparentBackground ) { imagealphablending($this->Picture,false); imagesavealpha($this->Picture,true); }

  150.      imagepng($this->Picture,$FileName);

  151.     }

  152. 

  153.    /* Render the picture to a web browser stream */

  154.    function stroke($BrowserExpire=FALSE)

  155.     {

  156.      if ( $this->TransparentBackground ) { imagealphablending($this->Picture,false); imagesavealpha($this->Picture,true); }

  157. 

  158.      if ( $BrowserExpire )

  159.       {

  160.        header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");

  161.        header("Cache-Control: no-cache");

  162.        header("Pragma: no-cache");

  163.       }

  164. 

  165.      header('Content-type: image/png');

  166.      imagepng($this->Picture);

  167.     }

  168. 

  169.    /* Automatic output method based on the calling interface */

  170.    function autoOutput($FileName="output.png")

  171.     {

  172.      if (php_sapi_name() == "cli")

  173.       $this->Render($FileName);

  174.      else

  175.       $this->Stroke();

  176.     }

  177. 

  178.    /* Return the length between two points */

  179.    function getLength($X1,$Y1,$X2,$Y2)

  180.     { return(sqrt(pow(max($X1,$X2)-min($X1,$X2),2)+pow(max($Y1,$Y2)-min($Y1,$Y2),2))); }

  181. 

  182.    /* Return the orientation of a line */

  183.    function getAngle($X1,$Y1,$X2,$Y2)

  184.     {

  185.      $Opposite = $Y2 - $Y1; $Adjacent = $X2 - $X1;$Angle = rad2deg(atan2($Opposite,$Adjacent));

  186.      if ($Angle > 0) { return($Angle); } else { return(360-abs($Angle)); }

  187.     }

  188. 

  189.    /* Return the surrounding box of text area */

  190.    function getTextBox_deprecated($X,$Y,$FontName,$FontSize,$Angle,$Text)

  191.     {

  192.      $Size    = imagettfbbox($FontSize,$Angle,$FontName,$Text);

  193.      $Width   = $this->getLength($Size[0],$Size[1],$Size[2],$Size[3])+1;

  194.      $Height  = $this->getLength($Size[2],$Size[3],$Size[4],$Size[5])+1;

  195. 

  196.      $RealPos[0]["X"] = $X; $RealPos[0]["Y"] = $Y;

  197.      $RealPos[1]["X"] = cos((360-$Angle)*PI/180)*$Width + $RealPos[0]["X"]; $RealPos[1]["Y"] = sin((360-$Angle)*PI/180)*$Width + $RealPos[0]["Y"];

  198.      $RealPos[2]["X"] = cos((270-$Angle)*PI/180)*$Height + $RealPos[1]["X"]; $RealPos[2]["Y"] = sin((270-$Angle)*PI/180)*$Height + $RealPos[1]["Y"];

  199.      $RealPos[3]["X"] = cos((180-$Angle)*PI/180)*$Width + $RealPos[2]["X"]; $RealPos[3]["Y"] = sin((180-$Angle)*PI/180)*$Width + $RealPos[2]["Y"];

  200. 

  201.      $RealPos[TEXT_ALIGN_BOTTOMLEFT]["X"] = $RealPos[0]["X"];	$RealPos[TEXT_ALIGN_BOTTOMLEFT]["Y"] = $RealPos[0]["Y"];

  202.      $RealPos[TEXT_ALIGN_BOTTOMRIGHT]["X"] = $RealPos[1]["X"];	$RealPos[TEXT_ALIGN_BOTTOMRIGHT]["Y"] = $RealPos[1]["Y"];

  203. 

  204.      return($RealPos);

  205.     }

  206. 

  207.    /* Return the surrounding box of text area */

  208.    function getTextBox($X,$Y,$FontName,$FontSize,$Angle,$Text)

  209.     {

  210.      $coords = imagettfbbox($FontSize, 0, $FontName, $Text);

  211. 

  212.      $a = deg2rad($Angle); $ca = cos($a); $sa = sin($a); $RealPos = array();

  213.      for($i = 0; $i < 7; $i += 2)

  214.       {

  215.        $RealPos[$i/2]["X"] = $X + round($coords[$i] * $ca + $coords[$i+1] * $sa);

  216.        $RealPos[$i/2]["Y"] = $Y + round($coords[$i+1] * $ca - $coords[$i] * $sa);

  217.       }

  218. 

  219.      $RealPos[TEXT_ALIGN_BOTTOMLEFT]["X"]	= $RealPos[0]["X"];	$RealPos[TEXT_ALIGN_BOTTOMLEFT]["Y"]	= $RealPos[0]["Y"];

  220.      $RealPos[TEXT_ALIGN_BOTTOMRIGHT]["X"]	= $RealPos[1]["X"];	$RealPos[TEXT_ALIGN_BOTTOMRIGHT]["Y"]	= $RealPos[1]["Y"];

  221.      $RealPos[TEXT_ALIGN_TOPLEFT]["X"]		= $RealPos[3]["X"];	$RealPos[TEXT_ALIGN_TOPLEFT]["Y"]	= $RealPos[3]["Y"];

  222.      $RealPos[TEXT_ALIGN_TOPRIGHT]["X"]		= $RealPos[2]["X"];	$RealPos[TEXT_ALIGN_TOPRIGHT]["Y"]	= $RealPos[2]["Y"];

  223.      $RealPos[TEXT_ALIGN_BOTTOMMIDDLE]["X"]	= ($RealPos[1]["X"]-$RealPos[0]["X"])/2+$RealPos[0]["X"];	$RealPos[TEXT_ALIGN_BOTTOMMIDDLE]["Y"]	= ($RealPos[0]["Y"]-$RealPos[1]["Y"])/2+$RealPos[1]["Y"];

  224.      $RealPos[TEXT_ALIGN_TOPMIDDLE]["X"]	= ($RealPos[2]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"];	$RealPos[TEXT_ALIGN_TOPMIDDLE]["Y"]	= ($RealPos[3]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];

  225.      $RealPos[TEXT_ALIGN_MIDDLELEFT]["X"]	= ($RealPos[0]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"];	$RealPos[TEXT_ALIGN_MIDDLELEFT]["Y"]	= ($RealPos[0]["Y"]-$RealPos[3]["Y"])/2+$RealPos[3]["Y"];

  226.      $RealPos[TEXT_ALIGN_MIDDLERIGHT]["X"]	= ($RealPos[1]["X"]-$RealPos[2]["X"])/2+$RealPos[2]["X"];	$RealPos[TEXT_ALIGN_MIDDLERIGHT]["Y"]	= ($RealPos[1]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];

  227.      $RealPos[TEXT_ALIGN_MIDDLEMIDDLE]["X"]	= ($RealPos[1]["X"]-$RealPos[3]["X"])/2+$RealPos[3]["X"];	$RealPos[TEXT_ALIGN_MIDDLEMIDDLE]["Y"]	= ($RealPos[0]["Y"]-$RealPos[2]["Y"])/2+$RealPos[2]["Y"];

  228. 

  229.      return($RealPos);

  230.     }

  231. 

  232.    /* Set current font properties */

  233.    function setFontProperties($Format="")

  234.     {

  235.      $R		= isset($Format["R"]) ? $Format["R"] : -1;

  236.      $G		= isset($Format["G"]) ? $Format["G"] : -1;

  237.      $B		= isset($Format["B"]) ? $Format["B"] : -1;

  238.      $Alpha	= isset($Format["Alpha"]) ? $Format["Alpha"] : 100;

  239.      $FontName	= isset($Format["FontName"]) ? $Format["FontName"] : NULL;

  240.      $FontSize	= isset($Format["FontSize"]) ? $Format["FontSize"] : NULL;

  241. 

  242.      if ( $R != -1)       {  $this->FontColorR = $R; }

  243.      if ( $G != -1)       {  $this->FontColorG = $G; }

  244.      if ( $B != -1)       {  $this->FontColorB = $B; }

  245.      if ( $Alpha != NULL) {  $this->FontColorA = $Alpha; }

  246. 

  247.      if ( $FontName != NULL  )

  248.       $this->FontName = $FontName;

  249.  

  250.      if ( $FontSize != NULL  )

  251.       $this->FontSize = $FontSize;

  252.     }

  253. 

  254.    /* Returns the 1st decimal values (used to correct AA bugs) */

  255.    function getFirstDecimal($Value)

  256.     {

  257.      $Values = preg_split("/\./",$Value);

  258.      if ( isset($Values[1]) ) { return(substr($Values[1],0,1)); } else { return(0); }

  259.     }

  260. 

  261.    /* Attach a dataset to your pChart Object */

  262.    function setDataSet(&$DataSet)

  263.     { $this->DataSet = $DataSet; }

  264. 

  265.    /* Print attached dataset contents to STDOUT */

  266.    function printDataSet()

  267.     { print_r($this->DataSet); }

  268. 

  269.    /* Initialise the image map methods */

  270.    function initialiseImageMap($Name="pChart",$StorageMode=IMAGE_MAP_STORAGE_SESSION,$UniqueID="imageMap",$StorageFolder="tmp")

  271.     {

  272.      $this->ImageMapIndex 		= $Name;

  273.      $this->ImageMapStorageMode		= $StorageMode;

  274. 

  275.      if ($StorageMode == IMAGE_MAP_STORAGE_SESSION)

  276.       {

  277.        if(!isset($_SESSION)) { session_start(); }

  278.        $_SESSION[$this->ImageMapIndex]    = NULL;

  279.       }

  280.      elseif($StorageMode == IMAGE_MAP_STORAGE_FILE)

  281.       {

  282.        $this->ImageMapFileName 		= $UniqueID;

  283.        $this->ImageMapStorageFolder	= $StorageFolder;

  284. 

  285.        if (file_exists($StorageFolder."/".$UniqueID.".map")) { unlink($StorageFolder."/".$UniqueID.".map"); }

  286.       }

  287.     }

  288. 

  289.    /* Add a zone to the image map */

  290.    function addToImageMap($Type,$Plots,$Color=NULL,$Title=NULL,$Message=NULL,$HTMLEncode=FALSE)

  291.     {

  292.      if ( $this->ImageMapStorageMode == NULL ) { $this->initialiseImageMap(); }

  293. 

  294.      /* Encode the characters in the imagemap in HTML standards */

  295.      $Title   = str_replace("&#8364;","\u20AC",$Title);

  296.      $Title   = htmlentities($Title,ENT_QUOTES,"ISO-8859-15");

  297.      if ( $HTMLEncode )

  298.       {

  299.        $Message = htmlentities($Message,ENT_QUOTES,"ISO-8859-15");

  300.        $Message = str_replace("&lt;","<",$Message);

  301.        $Message = str_replace("&gt;",">",$Message);

  302.       }

  303. 

  304.      if ( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_SESSION )

  305.       {

  306.        if(!isset($_SESSION)) { $this->initialiseImageMap(); }

  307.        $_SESSION[$this->ImageMapIndex][] = array($Type,$Plots,$Color,$Title,$Message);

  308.       }

  309.      elseif($this->ImageMapStorageMode == IMAGE_MAP_STORAGE_FILE)

  310.       {

  311.        $Handle = fopen($this->ImageMapStorageFolder."/".$this->ImageMapFileName.".map", 'a');

  312.        fwrite($Handle, $Type.IMAGE_MAP_DELIMITER.$Plots.IMAGE_MAP_DELIMITER.$Color.IMAGE_MAP_DELIMITER.$Title.IMAGE_MAP_DELIMITER.$Message."\r\n");

  313.        fclose($Handle);

  314.       }

  315.     }

  316. 

  317.    /* Remove VOID values from an imagemap custom values array */

  318.    function removeVOIDFromArray($SerieName, $Values)

  319.     {

  320.      if ( !isset($this->DataSet->Data["Series"][$SerieName]) ) { return(-1); }

  321. 

  322.      $Result = "";

  323.      foreach($this->DataSet->Data["Series"][$SerieName]["Data"] as $Key => $Value)

  324.       { if ( $Value != VOID && isset($Values[$Key]) ) { $Result[] = $Values[$Key]; } }

  325.      return($Result);

  326.     }

  327. 

  328.    /* Replace the title of one image map serie */

  329.    function replaceImageMapTitle($OldTitle, $NewTitle)

  330.     {

  331.      if ( $this->ImageMapStorageMode == NULL ) { return(-1); }

  332. 

  333.      if ( is_array($NewTitle) ) { $NewTitle = $this->removeVOIDFromArray($OldTitle, $NewTitle); }

  334.  

  335.      if ( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_SESSION )

  336.       {

  337.        if(!isset($_SESSION)) { return(-1); }

  338.        if ( is_array($NewTitle) )

  339.         { $ID = 0; foreach($_SESSION[$this->ImageMapIndex] as $Key => $Settings) { if ( $Settings[3] == $OldTitle && isset($NewTitle[$ID])) { $_SESSION[$this->ImageMapIndex][$Key][3] = $NewTitle[$ID]; $ID++; } } }

  340.        else

  341.         { foreach($_SESSION[$this->ImageMapIndex] as $Key => $Settings) { if ( $Settings[3] == $OldTitle ) { $_SESSION[$this->ImageMapIndex][$Key][3] = $NewTitle; } } }

  342.       }

  343.      elseif( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_FILE )

  344.       {

  345.        $TempArray = "";

  346.        $Handle    = @fopen($this->ImageMapStorageFolder."/".$this->ImageMapFileName.".map", "r");

  347.        if ($Handle)

  348.         {

  349.          while (($Buffer = fgets($Handle, 4096)) !== false)

  350.           {

  351.            $Fields      = preg_split("/".IMAGE_MAP_DELIMITER."/",str_replace(array(chr(10),chr(13)),"",$Buffer));

  352.            $TempArray[] = array($Fields[0],$Fields[1],$Fields[2],$Fields[3],$Fields[4]);

  353.           }

  354.          fclose($Handle);

  355. 

  356.          if ( is_array($NewTitle) )

  357.           { $ID = 0; foreach($TempArray as $Key => $Settings) { if ( $Settings[3] == $OldTitle && isset($NewTitle[$ID]) ) { $TempArray[$Key][3] = $NewTitle[$ID]; $ID++; } } }

  358.          else

  359.           { foreach($TempArray as $Key => $Settings) { if ( $Settings[3] == $OldTitle ) { $TempArray[$Key][3] = $NewTitle; } } }

  360. 

  361.          $Handle = fopen($this->ImageMapStorageFolder."/".$this->ImageMapFileName.".map", 'w');

  362.          foreach($TempArray as $Key => $Settings)

  363.           { fwrite($Handle, $Settings[0].IMAGE_MAP_DELIMITER.$Settings[1].IMAGE_MAP_DELIMITER.$Settings[2].IMAGE_MAP_DELIMITER.$Settings[3].IMAGE_MAP_DELIMITER.$Settings[4]."\r\n"); }

  364.          fclose($Handle);

  365.         }

  366.       }

  367.     }

  368. 

  369.    /* Replace the values of the image map contents */

  370.    function replaceImageMapValues($Title, $Values)

  371.     {

  372.      if ( $this->ImageMapStorageMode == NULL ) { return(-1); }

  373. 

  374.      $Values = $this->removeVOIDFromArray($Title, $Values);

  375.      $ID = 0; 

  376.      if ( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_SESSION )

  377.       {

  378.        if(!isset($_SESSION)) { return(-1); }

  379.        foreach($_SESSION[$this->ImageMapIndex] as $Key => $Settings) { if ( $Settings[3] == $Title ) { if ( isset($Values[$ID]) ) { $_SESSION[$this->ImageMapIndex][$Key][4] = $Values[$ID]; } $ID++; } }

  380.       }

  381.      elseif( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_FILE )

  382.       {

  383.        $TempArray = "";

  384.        $Handle    = @fopen($this->ImageMapStorageFolder."/".$this->ImageMapFileName.".map", "r");

  385.        if ($Handle)

  386.         {

  387.          while (($Buffer = fgets($Handle, 4096)) !== false)

  388.           {

  389.            $Fields      = preg_split("/".IMAGE_MAP_DELIMITER."/",str_replace(array(chr(10),chr(13)),"",$Buffer));

  390.            $TempArray[] = array($Fields[0],$Fields[1],$Fields[2],$Fields[3],$Fields[4]);

  391.           }

  392.          fclose($Handle);

  393. 

  394.          foreach($TempArray as $Key => $Settings) { if ( $Settings[3] == $Title ) { if ( isset($Values[$ID]) ) { $TempArray[$Key][4] = $Values[$ID]; } $ID++; } }

  395. 

  396.          $Handle = fopen($this->ImageMapStorageFolder."/".$this->ImageMapFileName.".map", 'w');

  397.          foreach($TempArray as $Key => $Settings)

  398.           { fwrite($Handle, $Settings[0].IMAGE_MAP_DELIMITER.$Settings[1].IMAGE_MAP_DELIMITER.$Settings[2].IMAGE_MAP_DELIMITER.$Settings[3].IMAGE_MAP_DELIMITER.$Settings[4]."\r\n"); }

  399.          fclose($Handle);

  400.         }

  401.       }

  402.     }

  403. 

  404.    /* Dump the image map */

  405.    function dumpImageMap($Name="pChart",$StorageMode=IMAGE_MAP_STORAGE_SESSION,$UniqueID="imageMap",$StorageFolder="tmp")

  406.     {

  407.      $this->ImageMapIndex 		= $Name;

  408.      $this->ImageMapStorageMode		= $StorageMode;

  409. 

  410.      if ( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_SESSION )

  411.       {

  412.        if(!isset($_SESSION)) { session_start(); }

  413.        if ( $_SESSION[$Name] != NULL )

  414.         {

  415.          foreach($_SESSION[$Name] as $Key => $Params)

  416.           { echo $Params[0].IMAGE_MAP_DELIMITER.$Params[1].IMAGE_MAP_DELIMITER.$Params[2].IMAGE_MAP_DELIMITER.$Params[3].IMAGE_MAP_DELIMITER.$Params[4]."\r\n"; }

  417.         }

  418.       }

  419.      elseif( $this->ImageMapStorageMode == IMAGE_MAP_STORAGE_FILE )

  420.       {

  421.        if (file_exists($StorageFolder."/".$UniqueID.".map"))

  422.         {

  423.          $Handle = @fopen($StorageFolder."/".$UniqueID.".map", "r");

  424.          if ($Handle) { while (($Buffer = fgets($Handle, 4096)) !== false) { echo $Buffer; } }

  425.          fclose($Handle);

  426. 

  427.          if ( $this->ImageMapAutoDelete ) { unlink($StorageFolder."/".$UniqueID.".map"); }

  428.         }

  429.       }

  430. 

  431.      /* When the image map is returned to the client, the script ends */

  432.      exit();

  433.     }

  434. 

  435.    /* Return the HTML converted color from the RGB composite values */

  436.    function toHTMLColor($R,$G,$B)

  437.     {

  438.      $R=intval($R); $G=intval($G); $B=intval($B);

  439.      $R=dechex($R<0?0:($R>255?255:$R)); $G=dechex($G<0?0:($G>255?255:$G));$B=dechex($B<0?0:($B>255?255:$B));

  440.      $Color="#".(strlen($R) < 2?'0':'').$R; $Color.=(strlen($G) < 2?'0':'').$G; $Color.= (strlen($B) < 2?'0':'').$B;

  441.      return($Color);

  442.     }

  443. 

  444.    /* Reverse an array of points */

  445.    function reversePlots($Plots)

  446.     {

  447.      $Result = "";

  448.      for($i=count($Plots)-2;$i>=0;$i=$i-2) { $Result[] = $Plots[$i]; $Result[] = $Plots[$i+1]; }

  449.      return($Result);

  450.     }

  451. 

  452.    /* Mirror Effect */

  453.    function drawAreaMirror($X,$Y,$Width,$Height,$Format="")

  454.     {

  455.      $StartAlpha	= isset($Format["StartAlpha"]) ? $Format["StartAlpha"] : 80;

  456.      $EndAlpha		= isset($Format["EndAlpha"]) ? $Format["EndAlpha"] : 0;

  457. 

  458.      $AlphaStep = ($StartAlpha-$EndAlpha)/$Height;

  459. 

  460.      $Picture = imagecreatetruecolor($this->XSize,$this->YSize);

  461.      imagecopy($Picture,$this->Picture,0,0,0,0,$this->XSize,$this->YSize);

  462.      

  463.      for($i=1;$i<=$Height;$i++)

  464.       {

  465.        if ( $Y+($i-1) < $this->YSize && $Y-$i > 0 ) { imagecopymerge($Picture,$this->Picture,$X,$Y+($i-1),$X,$Y-$i,$Width,1,$StartAlpha-$AlphaStep*$i); }

  466.       }

  467. 

  468.      imagecopy($this->Picture,$Picture,0,0,0,0,$this->XSize,$this->YSize);

  469.     }

  470.   }

Constants

Namesort descending Description
CHART_LAST_LAYOUT_REGULAR
CHART_LAST_LAYOUT_STACKED
IMAGE_MAP_DELIMITER
IMAGE_MAP_STORAGE_FILE
IMAGE_MAP_STORAGE_SESSION

Classes

Namesort descending Description
pImage