Java Image to BufferedImage toBufferedImage(Image image)

Description

to Buffered Image

License

Apache License

Declaration

private static BufferedImage toBufferedImage(Image image) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

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 {
    private static BufferedImage toBufferedImage(Image image) {
        if (image instanceof BufferedImage) {
            return (BufferedImage) image;
        }/* w  w  w.  j a va 2 s. co m*/

        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;
    }

    private 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. toBufferedImage(Image image)
2. toBufferedImage(Image image)
3. toBufferedImage(Image image)
4. toBufferedImage(Image image)
5. toBufferedImage(Image image)
6. toBufferedImage(Image image)
7. toBufferedImage(Image image)
8. toBufferedImage(Image image, int type)
9. toBufferedImage(Image image, int x, int y)