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khosb/includes/pear/Image/Graph/Axis/Marker/Area.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Class file containing a axis marker used for explicitly highlighting a area
* on the graph, based on an interval specified on an axis.
*
* 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 Grid
* @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: Area.php,v 1.11 2005/08/24 20:36:04 nosey Exp $
* @link http://pear.php.net/package/Image_Graph
*/
/**
* Include file Image/Graph/Grid.php
*/
require_once 'Image/Graph/Grid.php';
/**
* Display a grid
*
* {@link Image_Graph_Grid}
*
* @category Images
* @package Image_Graph
* @subpackage Grid
* @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_Axis_Marker_Area extends Image_Graph_Grid
{
/**
* The lower bound
* @var double
* @access private
*/
var $_lower = false;
/**
* The upper bound
* @var double
* @access private
*/
var $_upper = false;
/**
* [Constructor]
*/
function Image_Graph_Axis_Marker_Area()
{
parent::Image_Graph_Grid();
$this->_lineStyle = false;
}
/**
* Sets the lower bound of the area (value on the axis)
*
* @param double $lower the lower bound
*/
function setLowerBound($lower)
{
$this->_lower = $lower;
}
/**
* Sets the upper bound of the area (value on the axis)
*
* @param double $upper the upper bound
*/
function setUpperBound($upper)
{
$this->_upper = $upper;
}
/**
* Output the grid
*
* @return bool Was the output 'good' (true) or 'bad' (false).
* @access private
*/
function _done()
{
if (parent::_done() === false) {
return false;
}
if (!$this->_primaryAxis) {
return false;
}
$this->_canvas->startGroup(get_class($this));
$i = 0;
$this->_lower = max($this->_primaryAxis->_getMinimum(), $this->_lower);
$this->_upper = min($this->_primaryAxis->_getMaximum(), $this->_upper);
$secondaryPoints = $this->_getSecondaryAxisPoints();
reset($secondaryPoints);
list ($id, $previousSecondaryValue) = each($secondaryPoints);
while (list ($id, $secondaryValue) = each($secondaryPoints)) {
if ($this->_primaryAxis->_type == IMAGE_GRAPH_AXIS_X) {
$p1 = array ('Y' => $secondaryValue, 'X' => $this->_lower);
$p2 = array ('Y' => $previousSecondaryValue, 'X' => $this->_lower);
$p3 = array ('Y' => $previousSecondaryValue, 'X' => $this->_upper);
$p4 = array ('Y' => $secondaryValue, 'X' => $this->_upper);
} else {
$p1 = array ('X' => $secondaryValue, 'Y' => $this->_lower);
$p2 = array ('X' => $previousSecondaryValue, 'Y' => $this->_lower);
$p3 = array ('X' => $previousSecondaryValue, 'Y' => $this->_upper);
$p4 = array ('X' => $secondaryValue, 'Y' => $this->_upper);
}
$this->_canvas->addVertex(array('x' => $this->_pointX($p1), 'y' => $this->_pointY($p1)));
$this->_canvas->addVertex(array('x' => $this->_pointX($p2), 'y' => $this->_pointY($p2)));
$this->_canvas->addVertex(array('x' => $this->_pointX($p3), 'y' => $this->_pointY($p3)));
$this->_canvas->addVertex(array('x' => $this->_pointX($p4), 'y' => $this->_pointY($p4)));
$previousSecondaryValue = $secondaryValue;
$this->_getLineStyle();
$this->_getFillStyle();
$this->_canvas->polygon(array('connect' => true));
}
$this->_canvas->endGroup();
return true;
}
}
?>