package imagezoom;

import java.awt.Image;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class ImagePane extends JScrollPane implements ChangeListener{

	JPanel panel;
	JLabel label;
	ImageIcon icon;
	Image original;
	
	public ImagePane(String path) {
		try {
			original = ImageIO.read(new File(path));
			icon=new ImageIcon(original);
			label=new JLabel(icon);
			panel=new JPanel();
			panel.add(label);
			setViewportView(panel);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	@Override
	public void stateChanged(ChangeEvent arg0) {
		JSlider slider = (JSlider)arg0.getSource();
		int val = slider.getValue();
		double scalef=val*1.0/100;
		int w = original.getWidth(null);
		int h = original.getHeight(null);
		Image newimg=original.getScaledInstance((int)(w*scalef),(int)(h*scalef),Image.SCALE_FAST);
		icon.setImage(newimg);
		panel.repaint();
	}
}