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/**
 * Copyright (C) 2011 Angelo Zerr  and Pascal Leclercq 
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package org.apache.poi.xwpf.converter.internal;

import java.math.BigInteger;

/**
 * @author pascalleclercq
 * cf. http://startbigthinksmall.wordpress.com/2010/01/04/points-inches-and-emus-measuring-units-in-office-open-xml/
 */
public class DxaUtil {

	
	public static float dxa2mm(float dxa) {
		return (float)(dxa2inch(dxa)*25.4);
	}
	public static float dxa2mm(BigInteger dxa) {
		return (float)(dxa2inch(dxa)*25.4);
	}

	public static float emu2points(long emu) {
		return dxa2points(emu)/635;
	}
	public static float dxa2points(float dxa) {
		return dxa / 20;
	}
	public static int dxa2points(int dxa) {
		return dxa / 20;
	}
	public static int dxa2points(BigInteger dxa) {
		return dxa.intValue() / 20;
	}
	
	public static float dxa2inch(float dxa) {
		return dxa2points(dxa) / 72;
	}
	
	public static float dxa2inch(BigInteger dxa) {
		return dxa2points(dxa) / 72;
	}
}