A replacement for the standard BufferedImage.get Sub image method. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage

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Description

A replacement for the standard BufferedImage.get Sub image method.

Demo Code

/**//from  w  w  w . j  av  a  2  s  . c o m
 * Copyright @ 2008 Quan Nguyen
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
//package com.java2s;
import java.awt.Graphics2D;

import java.awt.Transparency;

import java.awt.image.*;

public class Main {
    /**
     * A replacement for the standard <code>BufferedImage.getSubimage</code>
     * method.
     *
     * @param image
     * @param x the X coordinate of the upper-left corner of the specified
     * rectangular region
     * @param y the Y coordinate of the upper-left corner of the specified
     * rectangular region
     * @param width the width of the specified rectangular region
     * @param height the height of the specified rectangular region
     * @return a BufferedImage that is the subimage of <code>image</code>.
     */
    public static BufferedImage getSubImage(BufferedImage image, int x,
            int y, int width, int height) {
        int type = (image.getTransparency() == Transparency.OPAQUE) ? BufferedImage.TYPE_INT_RGB
                : BufferedImage.TYPE_INT_ARGB;
        BufferedImage tmp = new BufferedImage(width, height, type);
        Graphics2D g2 = tmp.createGraphics();
        g2.drawImage(image.getSubimage(x, y, width, height), 0, 0, null);
        g2.dispose();
        return tmp;
    }
}

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