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/***********************************************************************************************************************
 *
 * OpenBlueSky - NetBeans Platform Enhancements
 * Copyright (C) 2006-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://openbluesky.kenai.com
 * SCM: https://kenai.com/hg/openbluesky~src
 *
 **********************************************************************************************************************/
package it.tidalwave.swing;

import java.awt.Font;
import javax.swing.JComponent;
import javax.swing.JLabel;

/*******************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 ******************************************************************************/
public class FontCache
  {
    private final int minFontSize;

    private final int maxFontSize;

    private Font font;

    private final JComponent component = new JLabel();

    /*******************************************************************************
     * 
     * @param minFontSize
     * @param maxFontSize
     * 
     *******************************************************************************/
    public FontCache (final String family, final int minFontSize, final int maxFontSize)
      {
        this(family, Font.PLAIN, minFontSize, maxFontSize);
      }

    /*******************************************************************************
     * 
     * @param minFontSize
     * @param maxFontSize
     * 
     *******************************************************************************/
    public FontCache (final String family, final int style, final int minFontSize, final int maxFontSize)
      {
        component.setFont(new Font(family, style, minFontSize));
        this.minFontSize = minFontSize;
        this.maxFontSize = maxFontSize;
      }

    /*******************************************************************************
     * 
     * @param baseFont
     * @param size
     * @return
     * 
     *******************************************************************************/
    public Font getFont (final double size)
      {
        return getFont(component, size);
      }

    /*******************************************************************************
     * 
     * @param baseFont
     * @param size
     * @return
     * 
     *******************************************************************************/
    private Font getFont (final JComponent component, final double size)
      {
        final float fontSize = (float)Math.min(maxFontSize, Math.max(minFontSize, size));

        if ((font == null) || (Math.abs(font.getSize2D() - fontSize) > 0.05))
          {
            font = component.getFont().deriveFont(fontSize);
            // TODO: Put in cache
            System.err.println("CREATED FONT FOR " + fontSize + ": " + font);
          }

        return font;
      }
  }