92 lines
3.1 KiB
PHP
92 lines
3.1 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Image_Graph - PEAR PHP OO Graph Rendering Utility.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version. This library is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details. You should have received a copy of
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* the GNU Lesser General Public License along with this library; if not, write
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* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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* @category Images
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* @package Image_Graph
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* @subpackage DataPreprocessor
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Function.php,v 1.6 2005/08/24 20:35:59 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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*/
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/**
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* Include file Image/Graph/DataPreprocessor.php
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*/
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require_once 'Image/Graph/DataPreprocessor.php';
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/**
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* Formatting a value using a userdefined function.
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*
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* Use this method to convert/format a value to a 'displayable' lable using a (perhaps)
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* more complex function. An example could be (not very applicable though) if one would
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* need for values to be displayed on the reverse order, i.e. 1234 would be displayed as
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* 4321, then this method can solve this by creating the function that converts the value
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* and use the FunctionData datapreprocessor to make Image_Graph use this function.
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*
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* @category Images
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* @package Image_Graph
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* @subpackage DataPreprocessor
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Image_Graph
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*/
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class Image_Graph_DataPreprocessor_Function extends Image_Graph_DataPreprocessor
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{
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/**
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* The name of the PHP function
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* @var string
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* @access private
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*/
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var $_dataFunction;
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/**
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* Create a FunctionData preprocessor
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*
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* @param string $function The name of the PHP function to use as
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* a preprocessor, this function must take a single parameter and return a
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* formatted version of this parameter
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*/
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function Image_Graph_DataPreprocessor_Function($function)
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{
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parent::Image_Graph_DataPreprocessor();
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$this->_dataFunction = $function;
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}
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/**
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* Process the value
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*
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* @param var $value The value to process/format
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* @return string The processed value
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* @access private
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*/
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function _process($value)
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{
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$function = $this->_dataFunction;
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return $function ($value);
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}
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}
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?>
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