Java Image to BufferedImage toBufferedImage(Image image)

Description

to Buffered Image

License

Apache License

Declaration

public 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 javax.swing.ImageIcon;

public class Main {

    public static BufferedImage toBufferedImage(Image image) {
        if (image instanceof BufferedImage) {
            return (BufferedImage) image;
        }// w w w  . j a  va2  s . co m

        // This code ensures that all the pixels in the image are loaded
        image = new ImageIcon(image).getImage();

        // Determine if the image has transparent pixels; for this method's
        // implementation, see e661 Determining If an Image Has Transparent
        // Pixels
        // boolean hasAlpha = hasAlpha(image);

        // Create a buffered image with a format that's compatible with the
        // screen
        BufferedImage bimage = null;
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        try {
            // Determine the type of transparency of the new buffered image
            int transparency = Transparency.OPAQUE;
            /*
             * if (hasAlpha) { transparency = Transparency.BITMASK; }
             */

            // Create the buffered image
            GraphicsDevice gs = ge.getDefaultScreenDevice();
            GraphicsConfiguration gc = gs.getDefaultConfiguration();
            bimage = gc.createCompatibleImage(image.getWidth(null), image.getHeight(null), transparency);
        } catch (HeadlessException e) {
            // The system does not have a screen
        }

        if (bimage == null) {
            // Create a buffered image using the default color model
            int type = BufferedImage.TYPE_INT_RGB;
            // int type = BufferedImage.TYPE_3BYTE_BGR;//by wang
            /*
             * if (hasAlpha) { type = BufferedImage.TYPE_INT_ARGB; }
             */
            bimage = new BufferedImage(image.getWidth(null), image.getHeight(null), type);
        }

        // Copy image to buffered image
        Graphics g = bimage.createGraphics();

        // Paint the image onto the buffered image
        g.drawImage(image, 0, 0, null);
        g.dispose();

        return bimage;
    }
}

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, int type)
8. toBufferedImage(Image image, int x, int y)
9. toBufferedImage(Image img)