[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   4  
   5  /**
   6   * Image_Graph - PEAR PHP OO Graph Rendering Utility.
   7   *
   8   * PHP versions 4 and 5
   9   *
  10   * LICENSE: This library is free software; you can redistribute it and/or modify
  11   * it under the terms of the GNU Lesser General Public License as published by
  12   * the Free Software Foundation; either version 2.1 of the License, or (at your
  13   * option) any later version. This library is distributed in the hope that it
  14   * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
  16   * General Public License for more details. You should have received a copy of
  17   * the GNU Lesser General Public License along with this library; if not, write
  18   * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19   * 02111-1307 USA
  20   *
  21   * @category   Images
  22   * @package    Image_Graph
  23   * @subpackage Marker
  24   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  25   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  26   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  27   * @version    CVS: $Id: Array.php,v 1.6 2005/02/21 20:49:50 nosey Exp $
  28   * @link       http://pear.php.net/package/Image_Graph
  29   */
  30  
  31  /**
  32   * Include file Image/Graph/Marker.php
  33   */
  34  require_once  'Image/Graph/Marker.php';
  35  
  36  /**
  37   * A sequential array of markers.
  38   *
  39   * This is used for displaying different markers for datapoints on a chart.
  40   * This is done by adding multiple markers to a MarkerArrray structure.
  41   * The marker array will then when requested return the 'next' marker in
  42   * sequential order. It is possible to specify ID tags to each marker, which is
  43   * used to make sure some data uses a specific marker.
  44   *
  45   * @category   Images
  46   * @package    Image_Graph
  47   * @subpackage Marker
  48   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  49   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  50   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  51   * @version    Release: 0.7.2
  52   * @link       http://pear.php.net/package/Image_Graph
  53   */
  54  class Image_Graph_Marker_Array extends Image_Graph_Marker
  55  {
  56  
  57      /**
  58       * The marker array
  59       * @var array
  60       * @access private
  61       */
  62      var $_markers = array ();
  63  
  64      /**
  65       * Add a marker style to the array
  66       *
  67       * @param Marker $marker The marker to add
  68       */
  69      function add(& $marker)
  70      {
  71          if (is_a($marker, 'Image_Graph_Element')) {
  72              parent::add($marker);
  73          }
  74          $this->_markers[] =& $marker;
  75          reset($this->_markers);
  76      }
  77  
  78      /**
  79       * Draw the marker on the canvas
  80       *
  81       * @param int $x The X (horizontal) position (in pixels) of the marker on
  82       *   the canvas
  83       * @param int $y The Y (vertical) position (in pixels) of the marker on the
  84       *   canvas
  85       * @param array $values The values representing the data the marker 'points'
  86       *   to
  87       * @access private
  88       */
  89      function _drawMarker($x, $y, $values = false)
  90      {
  91          $ID = key($this->_markers);
  92          if (!next($this->_markers)) {
  93              reset($this->_markers);
  94          }
  95          $marker =& $this->_markers[$ID];
  96  
  97          if ($marker != null) {
  98              $marker->_drawMarker($x, $y, $values);
  99          }
 100          parent::_drawMarker($x, $y, $values);
 101      }
 102  
 103  }
 104  
 105  ?>