Java BufferedImage Zoom zoom(BufferedImage srcBufferedImage, File destFile, int destHeight, int destWidth)

Description

zoom

License

Open Source License

Declaration

public static void zoom(BufferedImage srcBufferedImage, File destFile, int destHeight, int destWidth) 

Method Source Code

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

import javax.imageio.ImageIO;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class Main {

    public static void zoom(BufferedImage srcBufferedImage, File destFile, int destHeight, int destWidth) {
        try {/* w ww . j a  va 2s  .c  o  m*/
            int imgWidth = destWidth;
            int imgHeight = destHeight;
            int srcWidth = srcBufferedImage.getWidth();
            int srcHeight = srcBufferedImage.getHeight();
            if (srcHeight >= srcWidth) {
                imgWidth = (int) Math.round(((destHeight * 1.0 / srcHeight) * srcWidth));
            } else {
                imgHeight = (int) Math.round(((destWidth * 1.0 / srcWidth) * srcHeight));
            }
            BufferedImage destBufferedImage = new BufferedImage(destWidth, destHeight, BufferedImage.TYPE_INT_RGB);
            Graphics2D graphics2D = destBufferedImage.createGraphics();
            graphics2D.setBackground(Color.WHITE);
            graphics2D.clearRect(0, 0, destWidth, destHeight);
            graphics2D.drawImage(srcBufferedImage.getScaledInstance(imgWidth, imgHeight, Image.SCALE_SMOOTH),
                    (destWidth / 2) - (imgWidth / 2), (destHeight / 2) - (imgHeight / 2), null);
            graphics2D.dispose();
            ImageIO.write(destBufferedImage, "JPEG", destFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Related

1. zoomInImage(BufferedImage originalImage, int width, int height)
2. zoom(String srcImageFile, String result, int destHeight, int destWidth)