Java BufferedImage Show showImage(BufferedImage image, String title, boolean fitToScreen)

Description

show Image

License

Open Source License

Declaration

public static JFrame showImage(BufferedImage image, String title,
            boolean fitToScreen) 

Method Source Code

//package com.java2s;
/*/*from   w  w  w .j av  a 2  s  .  c o  m*/
 * =========================================================================
 * This file is part of NITRO
 * =========================================================================
 * 
 * (C) Copyright 2004 - 2010, MDA Information Systems LLC
 * 
 * NITRO is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, If not,
 * see <http://www.gnu.org/licenses/>.
 */

import java.awt.BorderLayout;
import java.awt.Dimension;

import java.awt.Image;

import java.awt.Toolkit;
import java.awt.Window;

import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.WindowConstants;

public class Main {
    public static JFrame showImage(BufferedImage image, String title) {
        return showImage(image, title, true);
    }

    public static JFrame showImage(BufferedImage image, String title,
            boolean fitToScreen) {
        JFrame frame = new JFrame(title != null ? title : "");
        frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);

        Image im = image;

        if (fitToScreen) {
            Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
            int imageHeight = image.getHeight();
            int imageWidth = image.getWidth();
            if (imageHeight > screen.height || imageWidth > screen.width) {
                double hRatio = (imageHeight - screen.height)
                        / screen.height;
                double wRatio = (imageWidth - screen.width) / screen.width;

                int w = -1;
                int h = -1;

                if (hRatio > wRatio)
                    h = screen.height;
                else
                    w = screen.width;
                im = image.getScaledInstance(w, h, Image.SCALE_DEFAULT);
            }
        }

        JLabel label = new JLabel(new ImageIcon(im));
        frame.getContentPane().add(label, BorderLayout.CENTER);
        frame.pack();
        centerWindow(frame);
        frame.setVisible(true);
        return frame;
    }

    public static void centerWindow(Window w) {
        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
        Dimension window = w.getSize();
        if (window.width == 0)
            return;
        int left = screen.width / 2 - window.width / 2;
        int top = (screen.height - window.height) / 4;
        if (top < 0)
            top = 0;
        w.setLocation(left, top);
    }
}

Related

1. printImage(BufferedImage im, String title)
2. printImageFromComponents(final Component _rootComponent, final int _currentColumn, final BufferedImage _bi)
3. show(final BufferedImage image, final int width, final int height)
4. showBufferedImage(BufferedImage I)
5. showImage(BufferedImage im)
6. showImage(BufferedImage img)
7. showImage(BufferedImage img)
8. showImage(final BufferedImage img, final HashMap inputHandles, final HashMap outputHandles)
9. showImage(String title, BufferedImage image)