/*******************************************************************************
 * This file is part of GECAMed.
 * 
 * GECAMed is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License (L-GPL) as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * GECAMed 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.
 * 
 * You should have received a copy of the GNU Lesser General Public License (L-GPL)
 * along with GECAMed.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * GECAMed is Copyrighted by the Centre de Recherche Public Henri Tudor (http://www.tudor.lu)
 * (c) CRP Henri Tudor, Luxembourg, 2008
 *******************************************************************************/
package lu.tudor.santec.gecamed.core.gui.widgets.dragnghost;

import java.awt.AlphaComposite;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.image.BufferedImage;

import javax.swing.JPanel;

public class GhostGlassPane extends JPanel
{
	private AlphaComposite composite;
    private BufferedImage dragged = null;
    private Point location = new Point(0, 0);

    public GhostGlassPane()
    {
        setOpaque(false);
        composite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f);
    }

    public void setImage(BufferedImage dragged)
    {
        this.dragged = dragged;
    }

    public void setPoint(Point location)
    {
        this.location = location;
    }

    public void paintComponent(Graphics g)
    {
        if (dragged == null)
            return;

        Graphics2D g2 = (Graphics2D) g;
        g2.setComposite(composite);
        g2.drawImage(dragged,
                     (int) (location.getX() - (dragged.getWidth(this)  / 2)),
                     (int) (location.getY() - (dragged.getHeight(this) / 2)),
                     null);
    }
}
