[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: Average.php,v 1.6 2005/08/03 21:21:55 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 marker displaying the 'distance' to the datasets average value.
  38   *
  39   * @category   Images
  40   * @package    Image_Graph
  41   * @subpackage Marker
  42   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  43   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  44   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  45   * @version    Release: 0.7.2
  46   * @link       http://pear.php.net/package/Image_Graph
  47   */
  48  class Image_Graph_Marker_Average extends Image_Graph_Marker
  49  {
  50  
  51      /**
  52       * Draw the marker on the canvas
  53       *
  54       * @param int $x The X (horizontal) position (in pixels) of the marker on
  55       *   the canvas
  56       * @param int $y The Y (vertical) position (in pixels) of the marker on the
  57       *   canvas
  58       * @param array $values The values representing the data the marker 'points'
  59       *   to
  60       * @access private
  61       */
  62      function _drawMarker($x, $y, $values = false)
  63      {
  64          if ((isset($values['AVERAGE_Y'])) &&
  65              (is_a($this->_parent, 'Image_Graph_Plot')))
  66          {
  67              $point = $this->_pointXY(
  68                  array(
  69                      'X' => $values['APX'],
  70                      'Y' => $values['AVERAGE_Y']
  71                  )
  72              );
  73              $this->_getLineStyle();
  74              $this->_canvas->line(array('x0' => $x, 'y0' => $y, 'x1' => $point['X'], 'y1' => $point['Y']));
  75  
  76              $this->_getLineStyle();
  77              $this->_canvas->line(
  78                  array(
  79                      'x0' => $point['X'] - 2,
  80                      'y0' => $point['Y'],
  81                      'x1' => $point['X'] + 2,
  82                      'y1' => $point['Y']
  83                  )
  84              );
  85          }
  86          parent::_drawMarker($x, $y, $values);
  87      }
  88  
  89  }
  90  
  91  ?>