Java BufferedImage Display display(final BufferedImage image)

Description

display

License

Open Source License

Declaration

public static void display(final BufferedImage image) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.BorderLayout;

import java.awt.Frame;

import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;

import java.util.concurrent.atomic.AtomicInteger;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class Main {
    public static void display(final BufferedImage image) {
        final JFrame frame = new JFrame();
        frame.getContentPane().setLayout(new BorderLayout());

        final ImageIcon imageIcon = new ImageIcon(image);
        JLabel imageLabel = new JLabel(imageIcon);
        frame.getContentPane().add(new JScrollPane(imageLabel), BorderLayout.CENTER);
        //frame.getContentPane().add(new JLabel(new ImageIcon(img)));

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new GridLayout(1, 4));
        JButton zoomInHButton = new JButton("+H");
        JButton zoomOutHButton = new JButton("-H");
        JButton zoomInVButton = new JButton("+V");
        JButton zoomOutVButton = new JButton("-V");
        buttonPanel.add(zoomInHButton);/*from w w  w.j  a v  a2  s.  co  m*/
        buttonPanel.add(zoomOutHButton);
        buttonPanel.add(zoomInVButton);
        buttonPanel.add(zoomOutVButton);

        final AtomicInteger zoomX = new AtomicInteger(0);
        final AtomicInteger zoomY = new AtomicInteger(0);

        zoomInHButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                zoomX.set(zoomX.get() + 1);
                refreshViewer(image, zoomX, zoomY, imageIcon, frame);
            }
        });
        zoomOutHButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                zoomX.set(zoomX.get() - 1);
                refreshViewer(image, zoomX, zoomY, imageIcon, frame);
            }
        });
        zoomInVButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                zoomY.set(zoomY.get() + 1);
                refreshViewer(image, zoomX, zoomY, imageIcon, frame);
            }
        });
        zoomOutVButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                zoomY.set(zoomY.get() - 1);
                refreshViewer(image, zoomX, zoomY, imageIcon, frame);
            }
        });

        frame.getContentPane().add(buttonPanel, BorderLayout.SOUTH);

        frame.pack();
        frame.setVisible(true);
        frame.invalidate();
    }

    private static void refreshViewer(Image img, AtomicInteger zoomX, AtomicInteger zoomY, ImageIcon icon,
            Frame frame) {
        //System.err.println(zoomX);
        //System.err.println(zoomY);
        Image newImage;
        if (zoomX.get() == 1 && zoomY.get() == 1) {
            newImage = img;
        } else {
            newImage = img.getScaledInstance((int) (img.getWidth(frame) * Math.pow(2, zoomX.get())),
                    (int) (img.getHeight(frame) * Math.pow(2, zoomY.get())), Image.SCALE_SMOOTH);
        }
        icon.setImage(newImage);
        frame.repaint();
    }
}

Related

1. displayImage(BufferedImage image)
2. displayImage(final BufferedImage bufferedImage, final String title)
3. displayImage(final String windowTitle, final BufferedImage image)
4. displayImageInWindow(BufferedImage image)