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60 jpm 1 
<?php
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/*
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 * This work is hereby released into the Public Domain.
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 * To view a copy of the public domain dedication,
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 * visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
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 * Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
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 *
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 */
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require_once dirname(__FILE__)."/../Graph.class.php";
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/**
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 * Objects capable of being positioned
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 *
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 * @package Artichow
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 */
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interface awPositionable {
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	/**
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	 * Left align
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	 *
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	 * @var int
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	 */
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	const LEFT = 1;
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	/**
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	 * Right align
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	 *
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	 * @var int
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	 */
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	const RIGHT = 2;
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	/**
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	 * Center align
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	 *
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	 * @var int
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	 */
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	const CENTER = 3;
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	/**
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	 * Top align
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	 *
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	 * @var int
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	 */
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	const TOP = 4;
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	/**
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	 * Bottom align
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	 *
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	 * @var int
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	 */
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	const BOTTOM = 5;
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	/**
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	 * Middle align
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	 *
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	 * @var int
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	 */
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	const MIDDLE = 6;
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	/**
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	 * Change alignment
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	 *
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	 * @param int $h Horizontal alignment
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	 * @param int $v Vertical alignment
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	 */
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	public function setAlign($h = NULL, $v = NULL);
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}
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registerInterface('Positionable');
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/**
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 * Manage left, right, top and bottom sides
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 *
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 * @package Artichow
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 */
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class awSide {
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	/**
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	 * Left side
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	 *
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	 * @var int
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	 */
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	public $left = 0;
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	/**
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	 * Right side
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	 *
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	 * @var int
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	 */
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	public $right = 0;
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	/**
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	 * Top side
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	 *
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	 * @var int
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	 */
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	public $top = 0;
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	/**
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	 * Bottom side
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	 *
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	 * @var int
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	 */
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	public $bottom = 0;
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	/**
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	 * Build the side
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	 *
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	 * @param mixed $left
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	 * @param mixed $right
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	 * @param mixed $top
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	 * @param mixed $bottom
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	 */
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	public function __construct($left = NULL, $right = NULL, $top = NULL, $bottom = NULL) {
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		$this->set($left, $right, $top, $bottom);
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	}
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	/**
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	 * Change side values
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	 *
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	 * @param mixed $left
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	 * @param mixed $right
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	 * @param mixed $top
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	 * @param mixed $bottom
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	 */
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	public function set($left = NULL, $right = NULL, $top = NULL, $bottom = NULL) {
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		if($left !== NULL) {
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			$this->left = (float)$left;
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		}
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		if($right !== NULL) {
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			$this->right = (float)$right;
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		}
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		if($top !== NULL) {
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			$this->top = (float)$top;
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		}
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		if($bottom !== NULL) {
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			$this->bottom = (float)$bottom;
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		}
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	}
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	/**
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	 * Add values to each side
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	 *
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	 * @param mixed $left
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	 * @param mixed $right
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	 * @param mixed $top
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	 * @param mixed $bottom
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	 */
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	public function add($left = NULL, $right = NULL, $top = NULL, $bottom = NULL) {
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		if($left !== NULL) {
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			$this->left += (float)$left;
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		}
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		if($right !== NULL) {
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			$this->right += (float)$right;
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		}
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		if($top !== NULL) {
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			$this->top += (float)$top;
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		}
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		if($bottom !== NULL) {
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			$this->bottom += (float)$bottom;
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		}
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	}
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}
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registerClass('Side');
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?>