includes/graphs.php
author Dan
Sat, 25 Aug 2007 12:11:31 -0400
changeset 98 6457a9b983c6
parent 73 0a74676a2f2f
child 142 ca9118d9c0f2
permissions -rw-r--r--
Fixed non-object reference in databaseless template, added locking for Javascript paginator, made comments on AES key size more clear in constants, and disallowed "anonymous" and IP addresses for admin username in install.php; Loch Ness release candidate

<?php

/*
 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
 * Version 1.0.1 (Loch Ness)
 * Copyright (C) 2006-2007 Dan Fuhry
 *
 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
 */

// BarGraph for PHP
// Source: http://www.phpclasses.org/browse/package/1567.html
// License: PHP license, see licenses/phplic.html included with this package

class GraphMaker {
  /**
   * GraphMaker::bar_width
   * Width of bars
   */
  var $bar_width = 32;
  /**
   * GraphMaker::bar_height
   * Height of bars
   */
  var $bar_height = 8;
  /**
   * GraphMaker::bar_data
   * Data of all bars
   */
  var $bar_data = array('a' => 7, 'b' => 3, 'c' => 6, 'd' => 0, 'e' => 2);
  /**
   * GraphMaker::bar_padding
   * Padding of bars
   */
  var $bar_padding = 5;
  /**
   * GraphMaker::bar_bordercolor
   * Border color of bars
   */
  var $bar_bordercolor = array(39, 78, 120);
  /**
   * GraphMaker::bar_bgcolor
   * Background color of bars
   */
  var $bar_bgcolor = array(69, 129, 194);
  //---------------------------------------------
  /**
   * GraphMaker::graph_areaheight
   * Height of graphic area
   */
  var $graph_areaheight = 100;
  /**
   * GraphMaker::graph_padding
   * Paddings of graph
   */
  var $graph_padding = array('left' => 50, 'top' => 20, 'right'  => 20, 'bottom' => 20);
  /**
   * GraphMaker::graph_title
   * Title text of graph
   */
  var $graph_title = "";
  /**
   * GraphMaker::graph_bgcolor
   * Background color of graph
   */
  var $graph_bgcolor = array(255, 255, 255);
  /**
   * GraphMaker::graph_bgtransparent
   * Boolean for background transparency
   */
  var $graph_bgtransparent = 0;
  /**
   * GraphMaker::graph_transparencylevel
   * Transparency level (0=opaque, 127=transparent)
   */
  var $graph_transparencylevel = 0;
  /**
   * GraphMaker::graph_borderwidth
   * Width of graph border
   */
  var $graph_borderwidth = 1;
  /**
   * GraphMaker::graph_bordercolor
   * Border color of graph
   */
  var $graph_bordercolor = array(218, 218, 239);
  /**
   * GraphMaker::graph_titlecolor
   * Color of title text of graph
   */
  var $graph_titlecolor = array(99, 88, 78);
  //---------------------------------------------
  /**
   * GraphMaker::axis_step
   * Scale step of axis
   */
  var $axis_step = 2;
  /**
   * GraphMaker::axis_bordercolor
   * Border color of axis
   */
  var $axis_bordercolor = array(99, 88, 78);
  /**
   * GraphMaker::axis_bgcolor
   * Background color of axis
   */
  var $axis_bgcolor = array(152, 137, 124);

  /****************************************************************
                              GRAPH
  ****************************************************************/

  /**
   * GraphMaker::SetGraphAreaHeight()
   * Sets graph height (not counting top and bottom margins)
   **/
  function SetGraphAreaHeight($height) {
    if ($height > 0) $this->graph_areaheight = $height;
  }

  /**
   * GraphMaker::SetGraphPadding()
   * Sets graph padding (margins)
   **/
  function SetGraphPadding($left, $top, $right, $bottom) {
    $this->graph_padding = array('left'   => (int) $left,
                                 'top'    => (int) $top,
                                 'right'  => (int) $right,
                                 'bottom' => (int) $bottom);
  }

  /**
   * GraphMaker::SetGraphTitle()
   * Set title text
   **/
  function SetGraphTitle($title) {
    $this->graph_title = $title;
  }

  /**
   * GraphMaker::SetGraphBorderColor()
   * Sets border color for graph
   **/
  function SetGraphBorderColor($red, $green, $blue) {
    $this->graph_bordercolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetGraphBorderWidth()
   * Set width of border. 0 disables border
   **/
  function SetGraphBorderWidth($width = 0) {
    $this->graph_borderwidth = $width;
  }

  /**
   * GraphMaker::SetGraphBackgroundColor()
   * Sets background color for graph
   **/
  function SetGraphBackgroundColor($red, $green, $blue) {
    $this->graph_bgcolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetGraphBackgroundTransparent()
   * Sets background color for graph (and set it transparent)
   **/
  function SetGraphBackgroundTransparent($red, $green, $blue, $addtransparency = 1) {
    $this->graph_bgcolor = array($red, $green, $blue);
    $this->graph_bgtransparent = ($addtransparency ? 1 : 0);
  }

  /**
   * GraphMaker::SetGraphTitleColor()
   * Sets title color for graph
   **/
  function SetGraphTitleColor($red, $green, $blue) {
    $this->graph_titlecolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetGraphTransparency()
   * Sets transparency for graph
   **/
  function SetGraphTransparency($percent) {
    if ($percent < 0) $percent = 0;
    elseif ($percent > 100) $percent = 127;
    else $percent = $percent * 1.27;
    $this->graph_transparencylevel = $percent;
  }

  /****************************************************************
                               BAR
  ****************************************************************/

  /**
   * GraphMaker::SetBarBorderColor()
   * Sets border color for bars
   **/
  function SetBarBorderColor($red, $green, $blue) {
    $this->bar_bordercolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetBarBackgroundColor()
   * Sets background color for bars
   **/
  function SetBarBackgroundColor($red, $green, $blue) {
    $this->bar_bgcolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetBarData()
   * Sets data of graph (parameter should be an array with key
   * being the name of the bar and the value the value of the bar.
   **/
  function SetBarData($data) {
    if (is_array($data)) $this->bar_data = $data;
  }

  /**
   * GraphMaker::SetBarDimensions()
   * Sets with and height of each bar
   **/
  function SetBarDimensions($width, $height) {
    if ($width > 0) $this->bar_width = $width;
    if ($height > 0) $this->bar_height = $height;
  }

  /**
   * GraphMaker::SetBarPadding()
   * Sets padding (border) around each bar
   **/
  function SetBarPadding($padding) {
    if ($padding > 0) $this->bar_padding = $padding;
  }

  /****************************************************************
                               AXIS
  ****************************************************************/

  /**
   * GraphMaker::SetAxisBorderColor()
   * Sets border color for axis
   **/
  function SetAxisBorderColor($red, $green, $blue) {
    $this->axis_bordercolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetAxisBackgroundColor()
   * Sets background color for axis
   **/
  function SetAxisBackgroundColor($red, $green, $blue) {
    $this->axis_bgcolor = array($red, $green, $blue);
  }

  /**
   * GraphMaker::SetAxisStep()
   * Sets axis scale step
   **/
  function SetAxisStep($step) {
    if ($step > 0) $this->axis_step = $step;
  }

  /**
   * GraphMaker::GetFinalGraphDimensions()
   * From the values already setted, it calculates image
   * width and height
   **/
  function GetFinalGraphDimensions() {
    $w = $this->graph_padding['left'] +
         (count($this->bar_data) * ($this->bar_width + ($this->bar_padding * 2))) +
         $this->graph_padding['right'];
    $h = $this->graph_padding['top'] +
         $this->graph_areaheight +
         $this->graph_padding['bottom'];
    return array($w, $h);
  }

  /**
   * GraphMaker::LoadGraph()
   * Loads definitions from a file
   **/
  function LoadGraph($path) {
    if (($fp = @fopen($path, "r")) !== false) {
      $content = "";
      while (!feof($fp)) {              // I do not use filesize() here
        $content .= fread($fp, 4096);   // because of remote files. If
      }                                 // there is no problem with them
      fclose($fp);                      // please let me know
      $this->__LoadGraphDefinitions($content);
      return true;
    } else return false;
  }

  /**
   * GraphMaker::DrawGraph()
   * Draw all the graph: bg, axis, bars, text.. and output it
   * Optional file parameter turns output to file, and bool on success
   **/
  function DrawGraph($file = "") {
    list($w, $h) = $this->GetFinalGraphDimensions();
    $this->graph_width = $w;
    $this->graph_height = $h;

    $this->im = imagecreatetruecolor($w, $h);
    if ($this->graph_transparencylevel) {
      imagealphablending($this->im, true);
    }

    $this->__PaintBackground();
    $this->__DrawAxis();

    $p = 0;
    foreach ($this->bar_data as $name => $value) {
      $p++;
      $this->__DrawBarText($p, $name);
      $this->__DrawBar($p, $value);
    }

    if (strlen($this->graph_title)) {
      $this->__AllocateColor("im_graph_titlecolor",
                             $this->graph_titlecolor,
                             $this->graph_transparencylevel);
      $this->__DrawText($this->graph_title,
                        floor($this->graph_width / 2),
                        $this->graph_borderwidth + 2,
                        $this->im_graph_titlecolor,
                        2,
                        1);
    }

    if (strlen($file)) {
      $ret = imagepng($this->im, $file);
    } else {
      header('Content-Type: image/png');
      imagepng($this->im);
      $ret = true;
    }
    imagedestroy($this->im);
    return $ret;
  }

  /**
   * GraphMaker::PaintBackground()
   * Draw all the graph: bg, axis, bars, text.. and output it
   * Optional file parameter turns output to file, and bool on success
   **/
  function __PaintBackground() {
    $this->__AllocateColor("im_graph_bgcolor",
                           $this->graph_bgcolor,
                           0);
    imagefilledrectangle($this->im,
                         0,
                         0,
                         $this->graph_width,
                         $this->graph_height,
                         $this->im_graph_bgcolor);
    if ($this->graph_bgtransparent) {
      imagecolortransparent($this->im, $this->im_graph_bgcolor);
    }
    if ($this->graph_borderwidth) {
      $this->__AllocateColor("im_graph_bordercolor",
                             $this->graph_bordercolor,
                             $this->graph_transparencylevel);
      for ($i = 0; $i < $this->graph_borderwidth; $i++) {
        imagerectangle($this->im,
                       $i,
                       $i,
                       $this->graph_width - 1 - $i,
                       $this->graph_height - 1 - $i,
                       $this->im_graph_bordercolor);
      }
    }
  }

  /**
   * GraphMaker::__DrawAxis()
   * Draws all the axis stuff (and scale steps)
   **/
  function __DrawAxis() {
    $this->__AllocateColor("im_axis_bordercolor",
                           $this->axis_bordercolor,
                           $this->graph_transparencylevel);
    $this->__AllocateColor("im_axis_bgcolor",
                           $this->axis_bgcolor,
                           $this->graph_transparencylevel);
    $this->__DrawPolygon($this->graph_padding['left'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->graph_padding['left'], $this->graph_padding['top'],
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_padding['top'] - $this->bar_height + 1,
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->im_axis_bgcolor, true);
    $this->__DrawPolygon($this->graph_padding['left'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->graph_padding['left'], $this->graph_padding['top'],
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_padding['top'] - $this->bar_height + 1,
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->im_axis_bordercolor);

    $this->__DrawPolygon($this->graph_padding['left'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->graph_width - $this->graph_padding['right'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->graph_width - $this->graph_padding['right'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->im_axis_bgcolor, true);
    $this->__DrawPolygon($this->graph_padding['left'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->graph_padding['left'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->graph_width - $this->graph_padding['right'] + $this->bar_height - 1, $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                         $this->graph_width - $this->graph_padding['right'], $this->graph_height - $this->graph_padding['bottom'],
                         $this->im_axis_bordercolor);

    // draw lines that separate bars
    $total_bars = count($this->bar_data);
    for ($i = 1; $i < $total_bars; $i++) {
      $offset = $this->graph_padding['left'] +
                (($this->bar_width + ($this->bar_padding * 2)) * $i);
      imageline($this->im,
                $offset,
                $this->graph_height - $this->graph_padding['bottom'],
                $offset + $this->bar_height - 1,
                $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height + 1,
                $this->im_axis_bordercolor);
    }

    // draw scale steps
    $max_value = $this->__GetMaxGraphValue();
    if (($max_value % 10) > 0) {
      $max_value = $max_value + (10 - ($max_value % 10));
    }
    $this->axis_max = $max_value;
    $y = 0;
    $style = array($this->im_axis_bordercolor, $this->im_graph_bgcolor);
    imagesetstyle($this->im, $style);
    while ($y <= $max_value) {
      if ($max_value == 0) { $max_value=1; } // corrected by Marcelo Trenkenchu
      $offset = floor($this->graph_height - $this->graph_padding['bottom'] -
                ($y * $this->graph_areaheight / $max_value));
      imageline($this->im,
                $this->graph_padding['left'],
                $offset,
                $this->graph_padding['left'] + $this->bar_height - 1,
                $offset - $this->bar_height + 1,
                $this->im_axis_bordercolor);
      $this->__DrawText($y,
                        $this->graph_padding['left'],
                        $offset,
                        $this->im_axis_bordercolor,
                        1,
                        2,
                        1);
      // gridline
      if ($y > 0) {
        imageline($this->im,
                  $this->graph_padding['left'] + $this->bar_height,
                  $offset - $this->bar_height + 1,
                  $this->graph_width - $this->graph_padding['right'] + $this->bar_height - 1,
                  $offset - $this->bar_height + 1,
                  IMG_COLOR_STYLED);
      }
      $y += $this->axis_step;
    }

    imageline($this->im,
              $this->graph_width - $this->graph_padding['right'] + $this->bar_height - 1,
              $this->graph_padding['top'] - $this->bar_height + 1,
              $this->graph_width - $this->graph_padding['right'] + $this->bar_height - 1,
              $this->graph_height - $this->graph_padding['bottom'] - $this->bar_height,
              IMG_COLOR_STYLED);
  }

  /**
   * GraphMaker::__DrawText()
   * Draws text on image with color, size and alignment options
   **/
  function __DrawText($text, $x, $y, $color, $size = 1, $align = 0, $valign = 0) {
    /*
     * Align: 0=left | 1=center | 2=right
     */
    if ($align == 1) $x -= floor(strlen($text) * imagefontwidth($size) / 2);
    elseif ($align == 2) $x -= (strlen($text) * imagefontwidth($size));
    if ($valign == 1) $y -= floor(imagefontheight($size) / 2);
    elseif ($valign == 2) $y -= imagefontheight($size);
    imagestring($this->im,
                $size,
                $x,
                $y,
                $text,
                $color);
  }

  /**
   * GraphMaker::__GetMaxGraphValue()
   * Returns max bar value
   **/
  function __GetMaxGraphValue() {
    $max_value = 0;
    foreach ($this->bar_data as $name => $value) {
      if ($value > $max_value) $max_value = $value;
    }
    return $max_value;
  }

  /**
   * GraphMaker::__DrawBarText()
   * Determines top and left to draw text to a choosen bar
   **/
  function __DrawBarText($bar, $text) {
    $this->__DrawText($text,
                      $this->graph_padding['left'] + (($this->bar_width + ($this->bar_padding * 2)) * ($bar - 0.5)),
                      $this->graph_height - $this->graph_padding['bottom'] + 1,
                      $this->axis_bordercolor,
                      1,
                      1);
  }

  /**
   * GraphMaker::__DrawBar()
   * Draws a choosen bar with it's value
   **/
  function __DrawBar($bar, $value) {
    $x = $this->graph_padding['left'] +
         (($this->bar_width + ($this->bar_padding * 2)) * ($bar - 1)) +
         $this->bar_padding;
    if ($this->axis_max == 0) { $this->axis_max = 1; } // corrected by Marcelo Trenkenchu
    $y = $value * $this->graph_areaheight / $this->axis_max;
    $this->____DrawBar($x,
                       $this->graph_height - $this->graph_padding['bottom'] - $y,
                       $x + $this->bar_width,
                       $this->graph_height - $this->graph_padding['bottom']);
  }

  /**
   * GraphMaker::____DrawBar()
   * Draws the actual rectangles that form a bar
   **/
  function ____DrawBar($x1, $y1, $x2, $y2) {
    $this->__AllocateColor("im_bar_bordercolor",
                           $this->bar_bordercolor,
                           $this->graph_transparencylevel);
    $this->__AllocateColor("im_bar_bgcolor",
                           $this->bar_bgcolor,
                           $this->graph_transparencylevel);
    $this->__DrawPolygon($x1,                         $y1,
                         $x2,                         $y1,
                         $x2,                         $y2,
                         $x1,                         $y2,
                         $this->im_bar_bgcolor,       true);
    $this->__DrawPolygon($x1,                         $y1,
                         $x2,                         $y1,
                         $x2,                         $y2,
                         $x1,                         $y2,
                         $this->im_bar_bordercolor);
    $this->__DrawPolygon($x1,                         $y1,
                         $x2,                         $y1,
                         $x2 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $x1 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $this->im_bar_bgcolor,       true);
    $this->__DrawPolygon($x1,                         $y1,
                         $x2,                         $y1,
                         $x2 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $x1 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $this->im_bar_bordercolor);
    $this->__DrawPolygon($x2,                         $y2,
                         $x2,                         $y1,
                         $x2 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $x2 + $this->bar_height - 1, $y2 - $this->bar_height + 1,
                         $this->im_bar_bgcolor,       true);
    $this->__DrawPolygon($x2,                         $y2,
                         $x2,                         $y1,
                         $x2 + $this->bar_height - 1, $y1 - $this->bar_height + 1,
                         $x2 + $this->bar_height - 1, $y2 - $this->bar_height + 1,
                         $this->im_bar_bordercolor);
  }

  /**
   * GraphMaker::__DrawPolygon()
   * Draws a (filled) (ir)regular polygon
   **/
  function __DrawPolygon($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4, $color, $filled = false) {
    if ($filled) {
      imagefilledpolygon($this->im, array($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4), 4, $color);
    } else {
      imagepolygon($this->im, array($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4), 4, $color);
    }
  }

  /**
   * GraphMaker::__LoadGraphDefinitions()
   * Loads definitions to a graph from text lines (normaly
   * they come from a file). This function is called by
   * GraphMaker::LoadGraph()
   **/
  function __LoadGraphDefinitions($text) {
    $text = preg_split("/\r?\n/", $text);
    $data = array();
    $section = '';
    for ($i = 0; $i < count($text); $i++) {
      if (preg_match("/^\s*#/", $text[$i])) {
        //ignore.. it's just a comment
      } elseif (preg_match("/^\s*\}\s*/", $text[$i])) {
        $section = '';
      } elseif (preg_match("/^\s*(\w+)\s*\{\s*$/", $text[$i], $r)) {
        $section = $r[1];
      } else {
        $p = strpos($text[$i], "=");
        if ($p !== false) {
          $data[$section][trim(substr($text[$i], 0, $p))] = trim(substr($text[$i], $p + 1));
        }
      }
    }
    if (is_array($data['graph'])) {
      $this->__LoadGraphValues($data['graph']);
    }
    if (is_array($data['bar'])) {
      $this->__LoadBarValues($data['bar']);
    }
    if (is_array($data['axis'])) {
      $this->__LoadAxisValues($data['axis']);
    }
    if (is_array($data['data'])) {
      $this->bar_data = $data['data'];
    }
  }

  /**
   * GraphMaker::__LoadGraphValues()
   * Loads definitions to main graph settings
   **/
  function __LoadGraphValues($data) {
    foreach ($data as $name => $value) {
      $name = strtolower($name);
      switch ($name) {
        case 'background-color':
          $this->__SetColorToValue("graph_bgcolor", $value);
          break;
        case 'border-color':
          $this->__SetColorToValue("graph_bordercolor", $value);
          break;
        case 'title-color':
          $this->__SetColorToValue("graph_titlecolor", $value);
          break;
        case 'background-transparent':
          $this->graph_bgtransparent = ($value == 1 || $value == 'yes' ? 1 : 0);
          break;
        case 'transparency':
          $this->SetGraphTransparency(str_replace('%', '', $value));
          break;
        case 'title':
          $this->graph_title = $value;
          break;
        case 'border-width':
          $this->graph_borderwidth = (int) $value;
          break;
        case 'area-height':
          $this->graph_areaheight = (int) $value;
          break;
        default:
          if (substr($name, 0, 8) == 'padding-' && strlen($name) > 8) {
            $this->graph_padding[substr($name, 8)] = $value;
          }
      }
    }
  }

  /**
   * GraphMaker::__LoadBarValues()
   * Loads definitions to bar settings
   **/
  function __LoadBarValues($data) {
    foreach ($data as $name => $value) {
      $name = strtolower($name);
      switch ($name) {
        case 'background-color':
          $this->__SetColorToValue("bar_bgcolor", $value);
          break;
        case 'border-color':
          $this->__SetColorToValue("bar_bordercolor", $value);
          break;
        case 'padding':
          $this->bar_padding = $value;
          break;
        case 'width':
          $this->bar_width = (int) $value;
          break;
        case 'height':
          $this->bar_height = (int) $value;
          break;
      }
    }
  }

  /**
   * GraphMaker::__LoadAxisValues()
   * Loads definitions to axis settings
   **/
  function __LoadAxisValues($data) {
    foreach ($data as $name => $value) {
      switch (strtolower($name)) {
        case 'step':
          $this->SetAxisStep($value);
          break;
        case 'background-color':
          $this->__SetColorToValue("axis_bgcolor", $value);
          break;
        case 'border-color':
          $this->__SetColorToValue("axis_bordercolor", $value);
      }
    }
  }

  /**
   * GraphMaker::__SetColorToValue()
   * Sets a color (rgb or in html format) to a variable
   **/
  function __SetColorToValue($varname, $color) {
    if ($color[0] == "#") { // if it's hex (html format), change to rgb array
      if (strlen($color) == 4) {
        // if only 3 hex values (I assume it's a shade of grey: #ddd)
        $color .= substr($color, -3);
      }
      $color = array(hexdec($color[1].$color[2]),
                     hexdec($color[3].$color[4]),
                     hexdec($color[5].$color[6]));
    }
    $this->$varname = $color;
  }

  function __AllocateColor($varname, $color, $alpha) {
    $this->$varname = imagecolorallocatealpha($this->im,
                                              $color[0],
                                              $color[1],
                                              $color[2],
                                              $alpha);
  }
}

// Graph Generator for PHP
// Originally located at http://szewo.com/php/graph, but link was broken, so this file was retrieved from:
// http://web.archive.org/web/20030130065944/szewo.com/php/graph/graph.class.php3.txt
// License unknown

class GraphMaker_compat {
 var $_values;
 var $_ShowLabels;
 var $_ShowCounts;
 var $_ShowCountsMode;

 var $_BarWidth;
 var $_GraphWidth;
 var $_BarImg;
 var $_BarBorderWidth;
 var $_BarBorderColor;
 var $_RowSortMode;
 var $_TDClassHead;
 var $_TDClassLabel;
 var $_TDClassCount;
 var $_GraphTitle;

 function __construct() {
  $this->_values = array();
  $this->_ShowLabels = true;
  $this->_BarWidth = 16;
  $this->_GraphWidth = 360;
  $this->_BarImg = "NULL";
  $this->_BarBorderWidth = 0;
  $this->_BarBorderColor = "red";
  $this->_ShowCountsMode = 2;
  $this->_RowSortMode = 1;
  $this->_TDClassHead = "grphh";
  $this->_TDClassLabel = "grph";
  $this->_TDClassCount = "grphc";
  $this->_GraphTitle="Graph title";
 }
 
 function GraphMaker_compat() {
  $this->__construct();
 }

 function SetBarBorderWidth($width) {
  $this->_BarBorderWidth = $width;
 }
 function SetBorderColor($color) {
  $this->_BarBorderColor = $color;
 }

//  mode = 1 labels asc, 2 label desc
 function SetSortMode($mode) {
  switch ($mode) {
   case 1:
    asort($this->_values);
    break;
   case 2:
    arsort($this->_values);
    break;
   default:
    break;
   }

 }

 function AddValue($labelName, $theValue) {
  array_push($this->_values, array("label" => $labelName, "value" => $theValue));

 }
 function SetBarWidth($width) {
  $this->_BarWidth = $width;
 }
 function SetBarImg($img) {
  $this->_BarImg = $img;
 }
 function SetShowLabels($lables) {
  $this->_ShowLabels = $labels;
 }
 function SetGraphWidth($width) {
  $this->_GraphWidth = $width;
 }
 function SetGraphTitle($title) {
  $this->_GraphTitle = $title;
 }
 //mode = percentage or counts
 function SetShowCountsMode($mode) {
  $this->_ShowCountsMode = $mode;
 }
 //mode = none(0) label(1) or count(2)
 function SetRowSortMode($sortmode) {
  $this->_RowSortMode = $sortmode;
 }

 function SetTDClassHead($class) {
  $this->_TDClassHead = $class;
 }
 function SetTDClassLabel($class) {
  $this->_TDClassLabel = $class;
 }
 function SetTDClassCount($class) {
  $this->_TDClassCount = $class;
 }
 function GetMaxVal() {
  $maxval = 0;
  foreach($this->_values as $value) if($maxval<$value["value"]) $maxval = $value["value"];
  return $maxval;
 }
 function BarGraphVert() {
  $maxval = $this->GetMaxVal();
  foreach($this->_values as $value) $sumval += $value["value"];
  $this->SetSortMode($this->_RowSortMode);
  echo "<table>";
  if (strlen($this->_GraphTitle)>0)  echo "<tr><td colspan=".count($this->_values)." class=\"".$this->_TDClassHead."\">".$this->_GraphTitle."</td></tr>";
   echo "<tr>";
   foreach($this->_values as $value) {
    echo "<td valign=bottom align=center>";
    $height = $this->_BarWidth;
    $width=ceil($value["value"]*$this->_GraphWidth/$maxval);
    echo "<div ";
    echo "  style=\"background-color: #666666; border: ".$this->_BarBorderWidth."px solid ".$this->_BarBorderColor."\"";
    echo ">";
    echo "</td>";
   }
   echo "</tr>";
   if ($this->_ShowCountsMode>0) {
   	echo "<tr>";
    foreach($this->_values as $value) {
     switch ($this->_ShowCountsMode) {
     case 1:
      $count = round(100*$value["value"]/$sumval)."%";
      break;
     case 2:
      $count = $value["value"];
      break;  /* Exit the switch and the while. */
     default:
      break;
     }
     echo "<td align=center class=".$this->_TDClassCount.">$count</td>";
   	}
	echo "</tr>";
   }

   if ($this->_ShowLabels) {
    echo "<tr>";
    foreach($this->_values as $value) {
     echo "<td align=center class=".$this->_TDClassLabel;
	 echo ">".$value["label"]."</td>";
	}
	echo "</tr>";
   }	

  echo "</table>";
 }



 function BarGraphHoriz() {
  $maxval = $this->GetMaxVal();
  foreach($this->_values as $value) $sumval += $value["value"];
  $this->SetSortMode($this->_RowSortMode);
  echo "<table border=0>";
  if (strlen($this->_GraphTitle)>0)  {
    echo "<tr><td ";
   if ($this->_ShowCountsMode>0) echo " colspan=2";
    echo " class=\"".$this->_TDClassHead."\">".$this->_GraphTitle."</TD></TR>";
  }
  foreach($this->_values as $value) {
   if ($this->_ShowLabels) {
    echo "<tr>";
    echo "<td class=".$this->_TDClassLabel;
    if ($this->_ShowCountsMode>0) echo " colspan=2";
	echo ">".$value["label"]."</TD></TR>";
   }	
   echo "<tr>";
   if ($this->_ShowCountsMode>0) {
    switch ($this->_ShowCountsMode) {
    case 1:
     $count = round(100*$value["value"]/$sumval)."%";
     break;
    case 2:
     $count = $value["value"];
     break;  /* Exit the switch and the while. */
    default:
     break;
    }
   echo "<td class=".$this->_TDClassCount.">$count</TD>";
   }
   echo "<td>";
   $height = $this->_BarWidth;
    $width=ceil($value["value"]*$this->_GraphWidth/$maxval);
   echo "<img SRC=\"".$this->_BarImg."\" height=$height width=$width ";
   echo "  style=\"border: ".$this->_BarBorderWidth."px solid ".$this->_BarBorderColor."\"";
   echo ">";
   echo "</TD></TR>";
  }
  echo "</TABLE>";
 }
}