#ifndef KALZIUMUTILS_H
#define KALZIUMUTILS_H

/***************************************************************************
    copyright            : (C) 2005, 2006 by Carsten Niehaus
    email                : cniehaus@kde.org
 ***************************************************************************/
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

class QString;
class QRect;
class QFont;
class QPainter;
class Element;

#include <chemicaldataobject.h>

class KalziumUtils
{
	public:
		/**
		 * @param string the string which is measured
		 * @param rect the rect needed for measurement
		 * @param font the used font
		 * @param painter the used painter
		 * @param maxFontSize the maximum fontsize
		 * @param minFontSize the maximum fontsize
		 */
		static int maxSize( const QString& string, const QRect& rect, QFont font, QPainter* painter, int minFontSize = 4, int maxFontSize = 20 );

		/**
		 * calculate the 4-digit value of the value @p w. For 
		 * example, 12.3456 will be returned as 12.35
		 * @param value the value which will be stripped
		 * @return the 4-digit value
		 */
		static double strippedValue( double value );

		/**
		 * @param string the string which is measured
		 * @param font the used font
		 * @param painter the used painter
		 * @return the width of the string @p string
		 */
		static int StringWidth( const QString& string, const QFont& font, QPainter* painter );
		/**
		 * @param string the string which is measured
		 * @param font the used font
		 * @param painter the used painter
		 * @return the height of the string @p string
		 */
		static int StringHeight( const QString& string, const QFont& font, QPainter* painter );

		/**
		 * An almost standard way to get an unit well converted for
		 * displaying including (eventual) unit.
		 * @param el the element
		 * @param kind the unit we want to print of the element @p el
		 * @return the formatted string
		 */
		static QString prettyUnit( const Element* el, ChemicalDataObject::BlueObelisk kind );
};

#endif // KALZIUMUTILS_H

