Java ImageIcon Resize resizeImageIcon(ImageIcon icon, int width, int height)

Description

Resize the input ImageIcon to a new size

License

Open Source License

Parameter

Parameter	Description
icon	the input ImageIcon
width	the new width
height	the new height

Return

the resized ImageIcon

Declaration

public final static ImageIcon resizeImageIcon(ImageIcon icon, int width, int height) 

Method Source Code

//package com.java2s;
/**//w  w w  .  jav a  2 s  .c  om
 * This file is part of evdev-java - Java implementation.
 *
 * evdev-java - Java implementation is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * evdev-java - Java implementation is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with evdev-java - Java implementation.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;

import javax.swing.ImageIcon;

public class Main {
    /**
     * Resize the input ImageIcon to a new size
     * 
     * @param icon the input ImageIcon
     * @param width the new width
     * @param height the new height
     * @return the resized ImageIcon
     */
    public final static ImageIcon resizeImageIcon(ImageIcon icon, int width, int height) {
        BufferedImage buffered = convert(icon);
        BufferedImage resized = resizeImage(buffered, width, height);
        ImageIcon result = new ImageIcon(resized);
        return result;

    }

    /**
     * Convert the Input {@link ImageIcon} into a {@link BufferedImage} with type TYPE_INT_ARGB
     * 
     * @param icon the {@link ImageIcon} to be converted
     * @return the converted BufferedImaged
     */
    public final static BufferedImage convert(ImageIcon icon) {
        if (icon == null) {
            throw new IllegalArgumentException("ImageIcon is null");
        }
        BufferedImage buffered = new BufferedImage(icon.getIconWidth(), icon.getIconHeight(),
                BufferedImage.TYPE_INT_ARGB);
        Graphics2D g = buffered.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
                RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);

        // paint the Icon to the BufferedImage.
        icon.paintIcon(null, g, 0, 0);
        g.dispose();

        return buffered;
    }

    /**
     * Resize the input BufferedImage to the specified width and height
     * 
     * @param img the BufferedImage to be resized
     * @param width the new width of the resized BufferedImage
     * @param height the new height of the resized BufferedImage
     * @return
     */
    public final static BufferedImage resizeImage(BufferedImage img, int width, int height) {
        if (img == null) {
            throw new IllegalArgumentException("Img parameter could not be null");
        }
        BufferedImage resized = new BufferedImage(width, height, img.getType());
        Graphics2D g = resized.createGraphics();
        g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION,
                RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);

        g.drawImage(img, 0, 0, width, height, 0, 0, img.getWidth(), img.getHeight(), null);
        // g.drawImage(img, 0, 0, width, height, 0, 0, img.getWidth(), img.getHeight(), null);
        g.dispose();
        return resized;
    }
}

Related

1. resize(ImageIcon icon, int extent)
2. resize(ImageIcon image, int width, int height)
3. resize(ImageIcon src, Dimension size)
4. resize(ImageIcon src, int destWidth, int destHeight)
5. resizeImageAspectRatio(int width, int height, ImageIcon orig_img)
6. to50x50(ImageIcon imageIcon)