Java BufferedImage Crop crop4Square(BufferedImage source, File to, int size)

Description

crop Square

License

Open Source License

Declaration

public static void crop4Square(BufferedImage source, File to, int size) 

Method Source Code

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

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;

import javax.imageio.stream.FileImageOutputStream;

public class Main {
    public static void crop4Square(BufferedImage source, File to, int size) {
        try {/*from  w w  w  .java 2s  .  com*/
            String mimeType = "image/jpeg";
            if (to.getName().endsWith(".png")) {
                mimeType = "image/png";
            }
            if (to.getName().endsWith(".gif")) {
                mimeType = "image/gif";
            }
            int width = source.getWidth();
            int height = source.getHeight();
            Image croppedImage;
            if (width == height) {
                croppedImage = source.getScaledInstance(size, size, Image.SCALE_SMOOTH);
            } else {
                int left, top;
                if (width > height) {
                    left = (width - height) / 2;
                    top = 0;
                    croppedImage = source.getSubimage(left, top, height, height);
                } else {
                    left = 0;
                    top = (height - width) / 2;
                    croppedImage = source.getSubimage(left, top, width, width);
                }
                croppedImage = croppedImage.getScaledInstance(size, size, Image.SCALE_SMOOTH);
            }

            // out
            BufferedImage dest = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
            Graphics graphics = dest.getGraphics();
            graphics.setColor(Color.WHITE);
            graphics.fillRect(0, 0, size, size);
            graphics.drawImage(croppedImage, 0, 0, null);
            ImageWriter writer = ImageIO.getImageWritersByMIMEType(mimeType).next();
            writer.setOutput(new FileImageOutputStream(to));
            IIOImage image = new IIOImage(dest, null, null);
            writer.write(null, image, createImageWriteParam(writer));

        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }

    public static ImageWriteParam createImageWriteParam(ImageWriter writer) {
        ImageWriteParam params = writer.getDefaultWriteParam();
        // JPEGImageWriteParam jpegImageWriteParam = new
        // JPEGImageWriteParam(writer.getLocale());
        // jpegImageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        // jpegImageWriteParam.setCompressionQuality(0.8F);
        params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        params.setCompressionQuality(0.95F);
        return params;
    }
}

Related

1. crop(BufferedImage source, int startX, int startY, int endX, int endY)
2. crop(BufferedImage src, int width, int height)
3. crop(BufferedImage src, int x, int y, int width, int height)
4. crop(BufferedImage src, Rectangle rect)
5. crop(final Raster src, final long tx, final long ty, final long minTx, final long maxTy, final int tilesize)
6. cropAndScaleImage(BufferedImage image, int cropX, int cropY, int cropW, int cropH, int scaleW, int scaleH)
7. cropBottomTransparent(BufferedImage img)
8. cropBoundingBox(Rectangle r, int width, int height)
9. cropImage(BufferedImage image, int cropWidth, int cropHeight)