[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 Grid
  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: Lines.php,v 1.10 2005/08/24 20:36:04 nosey Exp $
  28   * @link       http://pear.php.net/package/Image_Graph
  29   */
  30  
  31  /**
  32   * Include file Image/Graph/Grid.php
  33   */
  34  require_once  'Image/Graph/Grid.php';
  35  
  36  /**
  37   * Display a line grid on the plotarea.
  38   *
  39   * {@link Image_Graph_Grid}
  40   *
  41   * @category   Images
  42   * @package    Image_Graph
  43   * @subpackage Grid
  44   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  45   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  46   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  47   * @version    Release: 0.7.2
  48   * @link       http://pear.php.net/package/Image_Graph
  49   */
  50  class Image_Graph_Grid_Lines extends Image_Graph_Grid
  51  {
  52  
  53      /**
  54       * GridLines [Constructor]
  55       */
  56      function Image_Graph_Grid_Lines()
  57      {
  58          parent::Image_Graph_Grid();
  59          $this->_lineStyle = 'lightgrey';
  60      }
  61  
  62      /**
  63       * Output the grid
  64       *
  65       * @return bool Was the output 'good' (true) or 'bad' (false).
  66       * @access private
  67       */
  68      function _done()
  69      {
  70          if (parent::_done() === false) {
  71              return false;
  72          }
  73  
  74          if (!$this->_primaryAxis) {
  75              return false;
  76          }
  77  
  78          $this->_canvas->startGroup(get_class($this));
  79          
  80          $value = false;
  81  
  82          $secondaryPoints = $this->_getSecondaryAxisPoints();
  83  
  84          while (($value = $this->_primaryAxis->_getNextLabel($value)) !== false) {
  85              reset($secondaryPoints);
  86              list ($id, $previousSecondaryValue) = each($secondaryPoints);
  87              while (list ($id, $secondaryValue) = each($secondaryPoints)) {
  88                  if ($this->_primaryAxis->_type == IMAGE_GRAPH_AXIS_Y) {
  89                      $p1 = array ('X' => $secondaryValue, 'Y' => $value);
  90                      $p2 = array ('X' => $previousSecondaryValue, 'Y' => $value);
  91                  } else {
  92                      $p1 = array ('X' => $value, 'Y' => $secondaryValue);
  93                      $p2 = array ('X' => $value, 'Y' => $previousSecondaryValue);
  94                  }
  95  
  96                  $x1 = $this->_pointX($p1);
  97                  $y1 = $this->_pointY($p1);
  98                  $x2 = $this->_pointX($p2);
  99                  $y2 = $this->_pointY($p2);
 100  
 101                  $previousSecondaryValue = $secondaryValue;
 102  
 103                  $this->_getLineStyle();
 104                  $this->_canvas->line(array('x0' => $x1, 'y0' => $y1, 'x1' => $x2, 'y1' => $y2));
 105              }
 106          }
 107          
 108          $this->_canvas->endGroup();
 109          
 110          return true;
 111      }
 112  
 113  }
 114  ?>