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khosb/includes/pear/Image/Graph/Marker/Average.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Image_Graph - PEAR PHP OO Graph Rendering Utility.
*
* PHP versions 4 and 5
*
* LICENSE: This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version. This library 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 Lesser
* General Public License for more details. You should have received a copy of
* the GNU Lesser General Public License along with this library; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* @category Images
* @package Image_Graph
* @subpackage Marker
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: Average.php,v 1.6 2005/08/03 21:21:55 nosey Exp $
* @link http://pear.php.net/package/Image_Graph
*/
/**
* Include file Image/Graph/Marker.php
*/
require_once 'Image/Graph/Marker.php';
/**
* A marker displaying the 'distance' to the datasets average value.
*
* @category Images
* @package Image_Graph
* @subpackage Marker
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version Release: @package_version@
* @link http://pear.php.net/package/Image_Graph
*/
class Image_Graph_Marker_Average extends Image_Graph_Marker
{
/**
* Draw the marker on the canvas
*
* @param int $x The X (horizontal) position (in pixels) of the marker on
* the canvas
* @param int $y The Y (vertical) position (in pixels) of the marker on the
* canvas
* @param array $values The values representing the data the marker 'points'
* to
* @access private
*/
function _drawMarker($x, $y, $values = false)
{
if ((isset($values['AVERAGE_Y'])) &&
(is_a($this->_parent, 'Image_Graph_Plot')))
{
$point = $this->_pointXY(
array(
'X' => $values['APX'],
'Y' => $values['AVERAGE_Y']
)
);
$this->_getLineStyle();
$this->_canvas->line(array('x0' => $x, 'y0' => $y, 'x1' => $point['X'], 'y1' => $point['Y']));
$this->_getLineStyle();
$this->_canvas->line(
array(
'x0' => $point['X'] - 2,
'y0' => $point['Y'],
'x1' => $point['X'] + 2,
'y1' => $point['Y']
)
);
}
parent::_drawMarker($x, $y, $values);
}
}
?>