/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * This program 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.
 *
 * Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.layout.text;

import org.pentaho.reporting.libraries.fonts.registry.BaselineInfo;
import org.pentaho.reporting.libraries.fonts.registry.FontMetrics;

/**
 * Creation-Date: 04.04.2007, 14:46:14
 *
 * @author Thomas Morgner
 */
public class TextUtility {
  private TextUtility() {
  }

  private static int translateBaselines( final int baseline ) {
    switch ( baseline ) {
      case BaselineInfo.HANGING:
        return ExtendedBaselineInfo.HANGING;
      case BaselineInfo.ALPHABETIC:
        return ExtendedBaselineInfo.ALPHABETHIC;
      case BaselineInfo.CENTRAL:
        return ExtendedBaselineInfo.CENTRAL;
      case BaselineInfo.IDEOGRAPHIC:
        return ExtendedBaselineInfo.IDEOGRAPHIC;
      case BaselineInfo.MATHEMATICAL:
        return ExtendedBaselineInfo.MATHEMATICAL;
      case BaselineInfo.MIDDLE:
        return ExtendedBaselineInfo.MIDDLE;
      default:
        throw new IllegalArgumentException( "Invalid baseline" );
    }
  }

  public static ExtendedBaselineInfo createBaselineInfo( final int codepoint, final FontMetrics fontMetrics,
      final BaselineInfo reusableBaselineInfo ) {
    if ( fontMetrics == null ) {
      throw new NullPointerException( "FontMetrics cannot be null" );
    }

    final BaselineInfo baselineInfo = fontMetrics.getBaselines( codepoint, reusableBaselineInfo );
    final int dominantBaseline = TextUtility.translateBaselines( baselineInfo.getDominantBaseline() );
    final long underlinePosition = fontMetrics.getUnderlinePosition();
    final long strikeThroughPosition = fontMetrics.getStrikeThroughPosition();
    return new DefaultExtendedBaselineInfo( dominantBaseline, baselineInfo, 0, 0, fontMetrics.getMaxHeight(),
        fontMetrics.getMaxHeight(), underlinePosition, strikeThroughPosition );
  }

}