com.lti.civil.swing.ImageFrame Maven / Gradle / Ivy

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package com.lti.civil.swing;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;

import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

/**
 * Adapted from http://www.oreilly.com/catalog/learnjava/chapter/ch14.html
 * 
 * @author Ken Larson
 * 
 */
public class ImageFrame extends JFrame
{

//	public static void main(String[] args)
//	{
//		String filename = "/Users/ken/Documents/workspace/vx.gui.standalone/sampledata/Stefan_Raab.jpg";
//		if (args.length > 0)
//			filename = args[0];
//
//		ImageFrame imageFrame = new ImageFrame("ImageFrame");
//
//		imageFrame.setSize(300, 300);
//		imageFrame.setLocation(200, 200);
//		imageFrame.addWindowListener(new WindowAdapter()
//		{
//			public void windowClosing(WindowEvent e)
//			{
//				System.exit(0);
//			}
//		});
//
//		Image image = Toolkit.getDefaultToolkit().getImage(filename);
//		imageFrame.setImage(image);
//
//		imageFrame.setVisible(true);
//		imageFrame.pack();
//	}
	
	public void setImage(Image image)
	{	ic.setImage(image);
	}

	private ImageComponent ic;

	public ImageFrame(String title)
	{
		super(title);

		ic = new ImageComponent();
		getContentPane().add(ic);

	}
	
	public void setImageSize(int h, int w)
	{
		ic.setImageSize(new Dimension(h, w));
	}

	public class ImageComponent extends JComponent
	{
		private Image image;

		private Dimension size;

		public void setImage(Image image)
		{
			SwingUtilities.invokeLater(new ImageRunnable(image));
			
		}
		
		public void setImageSize(Dimension newSize)
		{
			if (!newSize.equals(size))
			{	//System.out.println("New size " + newSize + " from " + size);
				size = newSize;
				setSize(size);
				ImageFrame.this.pack();
			}
		}
		
		private class ImageRunnable implements Runnable
		{	private final Image newImage;

			public ImageRunnable(Image newImage)
			{
				super();
				this.newImage = newImage;
			}
	
			public void run()
			{	setImageInSwingThread(newImage);
			}
			
		}
		
		private synchronized void setImageInSwingThread(Image image)
		{
			this.image = image;
			final Dimension newSize = new Dimension(image.getWidth(null), image.getHeight(null));
			setImageSize(newSize);
			repaint();
		}

		public ImageComponent()
		{
			size = new Dimension(0, 0);
			setSize(size);
		}

		public synchronized void paint(Graphics g)
		{
			if (image != null)
				g.drawImage(image, 0, 0, this);
		}

		public synchronized Dimension getPreferredSize()
		{
			return size;
		}
	}
}