Java Image to BufferedImage toBufferedImage(Image image)

Description

Given an image, produces a BufferedImage

License

Open Source License

Parameter

Parameter	Description
image	An Image

Return

A BufferedImage with the same contents as image

Declaration

public static BufferedImage toBufferedImage(Image image) 

Method Source Code

//package com.java2s;
/*//  w  ww  .  j a v a 2 s  .  c  o  m
 * Copyright (c) 2004-2013 Universidade do Porto - Faculdade de Engenharia
 * Laborat?rio de Sistemas e Tecnologia Subaqu?tica (LSTS)
 * All rights reserved.
 * Rua Dr. Roberto Frias s/n, sala I203, 4200-465 Porto, Portugal
 *
 * This file is part of Neptus, Command and Control Framework.
 *
 * Commercial Licence Usage
 * Licencees holding valid commercial Neptus licences may use this file
 * in accordance with the commercial licence agreement provided with the
 * Software or, alternatively, in accordance with the terms contained in a
 * written agreement between you and Universidade do Porto. For licensing
 * terms, conditions, and further information contact lsts@fe.up.pt.
 *
 * European Union Public Licence - EUPL v.1.1 Usage
 * Alternatively, this file may be used under the terms of the EUPL,
 * Version 1.1 only (the "Licence"), appearing in the file LICENCE.md
 * included in the packaging of this file. You may not use this work
 * except in compliance with the Licence. Unless required by applicable
 * law or agreed to in writing, software distributed under the Licence is
 * distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF
 * ANY KIND, either express or implied. See the Licence for the specific
 * language governing permissions and limitations at
 * https://www.lsts.pt/neptus/licence.
 *
 * For more information please see <http://lsts.fe.up.pt/neptus>.
 *
 * Author: 
 * 24/Fev/2005
 */

import java.awt.Graphics;

import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.HeadlessException;
import java.awt.Image;

import java.awt.Transparency;

import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.PixelGrabber;

import javax.swing.ImageIcon;

public class Main {
    /**
     * Given an image, produces a BufferedImage
     * 
     * @param image An Image
     * @return A BufferedImage with the same contents as <b>image</b>
     */
    public static BufferedImage toBufferedImage(Image image) {
        if (image instanceof BufferedImage) {
            return (BufferedImage) image;
        }

        image = new ImageIcon(image).getImage();
        boolean hasAlpha = hasAlpha(image);

        BufferedImage bimage = null;
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        try {

            int transparency = Transparency.OPAQUE;
            if (hasAlpha) {
                transparency = Transparency.BITMASK;
            }

            GraphicsDevice gs = ge.getDefaultScreenDevice();
            GraphicsConfiguration gc = gs.getDefaultConfiguration();
            bimage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
        } catch (HeadlessException e) {

        }

        if (bimage == null) {
            int type = BufferedImage.TYPE_INT_RGB;
            if (hasAlpha) {
                type = BufferedImage.TYPE_INT_ARGB;
            }
            bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), type);
        }

        Graphics g = bimage.createGraphics();

        g.drawImage(image, 0, 0, null);
        g.dispose();

        return bimage;
    }

    /**
     * Verifies if the given image as any translucent pixels
     * 
     * @param image An Image
     * @return <b>true</b> if, and only if, a translucent pixel as been found in the image
     */
    public static boolean hasAlpha(Image image) {
        if (image instanceof BufferedImage) {
            BufferedImage bimage = (BufferedImage) image;
            return bimage.getColorModel().hasAlpha();
        }

        PixelGrabber pg = new PixelGrabber(image, 0, 0, 1, 1, false);
        try {
            pg.grabPixels();
        } catch (InterruptedException e) {

        }

        ColorModel cm = pg.getColorModel();
        return cm.hasAlpha();
    }
}

Related

1. makeBufferedImage(Image image)
2. makeBufferedImage(Image image)
3. makeRGBABufferedImageFromImage( Image image)
4. toBufferedImage(Image i)
5. toBufferedImage(Image image)
6. toBufferedImage(Image image)
7. toBufferedImage(Image image)
8. toBufferedImage(Image image)
9. toBufferedImage(Image image)