Pads the given BufferedImage on all sides by the given padding amount. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage

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Description

Pads the given BufferedImage on all sides by the given padding amount.

Demo Code

/*/*from  ww  w.j a  va2s .c o m*/
 * Copyright (C) 2011 The Android Open Source Project
 *
 * 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.book2s;

import java.awt.Graphics2D;

import java.awt.image.BufferedImage;

public class Main {
    /**
     * Pads the given {@link BufferedImage} on all sides by the given padding amount.
     *
     * @param source  The source image.
     * @param padding The amount to pad on all sides, in pixels.
     * @return A new, padded image, or the source image if no padding is performed.
     */
    public static BufferedImage paddedImage(BufferedImage source,
            int padding) {
        if (padding == 0) {
            return source;
        }

        BufferedImage newImage = newArgbBufferedImage(source.getWidth()
                + padding * 2, source.getHeight() + padding * 2);
        Graphics2D g = (Graphics2D) newImage.getGraphics();
        g.drawImage(source, padding, padding, null);
        return newImage;
    }

    /**
     * Creates a new ARGB {@link BufferedImage} of the given width and height.
     *
     * @param width  The width of the new image.
     * @param height The height of the new image.
     * @return The newly created image.
     */
    public static BufferedImage newArgbBufferedImage(int width, int height) {
        return new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
    }
}

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