AbstractImagePreview.java

/*
 * Copyright (C) 2011 IsmAvatar <IsmAvatar@gmail.com>
 * Copyright (C) 2007 Clam <clamisgood@gmail.com>
 *
 * This file is part of LateralGM.
 * LateralGM is free software and comes with ABSOLUTELY NO WARRANTY.
 * See LICENSE for details.
 */

package org.lateralgm.components.visual;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.image.BufferedImage;

import javax.swing.Icon;
import javax.swing.JLabel;

public abstract class AbstractImagePreview extends JLabel
	{
	private static final long serialVersionUID = 1L;

	public AbstractImagePreview()
		{
		setOpaque(true);
		}

	protected abstract BufferedImage getImage();

	public Shape reclip(Graphics g)
		{
		Shape oldClip = g.getClip(); //backup the old clip
		Rectangle oldc = g.getClipBounds();
		//Set the clip properly
		BufferedImage img = getImage();
		g.setClip(new Rectangle(oldc.x,oldc.y,Math.min(oldc.x + oldc.width,img.getWidth()) - oldc.x,
				Math.min(oldc.y + oldc.height,img.getHeight()) - oldc.y));
		return oldClip;
		}

	public Dimension getPreferredSize()
		{
		BufferedImage bi = getImage();
		if (bi == null) return super.getPreferredSize();
		return new Dimension(bi.getWidth(),bi.getHeight());
		}

	@Deprecated
	public void setIcon(Icon ico)
		{
		super.setIcon(ico);
		}

	public void paintComponent(Graphics g)
		{
		super.paintComponent(g);
		g.drawImage(getImage(),0,0,null);
		}
	}