ImagePreview.java

package ru.kkey.ui.preview;

import ru.kkey.ui.widget.AutoResizeImagePanel;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * Image preview
 *
 * @author anstarovoyt
 */
public class ImagePreview implements Preview
{
	public static final Set<String> extensions = new HashSet<>(Arrays.asList("jpg", "png", "gif", "tif", "jpeg"));

	@Override
	public Set<String> getExtensions()
	{
		return extensions;
	}

	@Override
	public void render(JPanel dialogPanel, byte[] file)
	{
		try
		{
			InputStream in = new ByteArrayInputStream(file);
			BufferedImage imageRaw = ImageIO.read(in);

			JPanel scrollPane = new AutoResizeImagePanel(imageRaw);

			dialogPanel.add(scrollPane);
		} catch (IOException e)
		{
			throw new RuntimeException(e.getMessage(), e);
		}

	}
}