[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3   * Bar graph implementation for the Horde_Graph package.
   4   *
   5   * $Horde: framework/Graph/Graph/Plot/bar.php,v 1.5.12.4 2006/01/01 21:28:18 jan Exp $
   6   *
   7   * Copyright 2002-2006 Chuck Hagenbuch <chuck@horde.org>
   8   *
   9   * See the enclosed file COPYING for license information (LGPL). If you
  10   * did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
  11   *
  12   * @author  Chuck Hagenbuch <chuck@horde.org>
  13   * @since   Horde 3.0
  14   * @package Horde_Graph
  15   */
  16  class Horde_Graph_Plot_bar {
  17  
  18      var $graph;
  19  
  20      var $_color = 'blue';
  21      var $_outline = 'black';
  22      var $_width = 10;
  23      var $_offset = 0;
  24      var $_dataset;
  25  
  26      function Horde_Graph_Plot_bar(&$graph, $params)
  27      {
  28          $this->graph = &$graph;
  29  
  30          foreach ($params as $param => $value) {
  31              $key = '_' . $param;
  32              $this->$key = $value;
  33          }
  34      }
  35  
  36      function draw($minY = false)
  37      {
  38          $data = $this->graph->_data['y'][$this->_dataset];
  39  
  40          $barWidth = $this->_width;
  41          $barOffset = $this->_offset * $barWidth;
  42          $u = 0;
  43          $v = 0;
  44          $count = count($data);
  45          for ($i = 0; $i < $count; $i++) {
  46              $x = $i;
  47              if ($minY === false || $data[$i] >= $minY) {
  48                  $y = $data[$i];
  49                  $this->graph->translate($x, $y);
  50                  $x = $x - ($barWidth / 2) + $barOffset;
  51                  $height = $this->graph->_graphBottom - $y;
  52  
  53                  $this->graph->img->rectangle($x, $y, $barWidth, $height, $this->_outline, $this->_color);
  54              }
  55          }
  56      }
  57  
  58  }