Java BufferedImage Operation darkenImage(final BufferedImage image, final float darken)

Description

Darkens specified BufferedImage

License

Open Source License

Declaration

public static void darkenImage(final BufferedImage image, final float darken) 

Method Source Code

//package com.java2s;
/*//from w  ww  .j  a v  a 2  s  .c  o  m
 * This file is part of WebLookAndFeel library.
 *
 * WebLookAndFeel library 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.
 *
 * WebLookAndFeel library 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 WebLookAndFeel library.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.*;

import java.awt.image.BufferedImage;

public class Main {
    /**
     * Darkens specified BufferedImage
     */

    public static void darkenImage(final BufferedImage image, final float darken) {
        final Graphics2D g2d = image.createGraphics();
        g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, darken));
        g2d.setPaint(Color.BLACK);
        g2d.fillRect(0, 0, image.getWidth(), image.getHeight());
        g2d.dispose();
    }
}

Related

1. conformImageToInt(BufferedImage in)
2. contrast(BufferedImage src, float scaleFactor)
3. criarImagemCompativel(BufferedImage original, int largura, int altura, boolean manterQualidade)
4. cutToSquare(BufferedImage src)
5. cylindricalMapping(BufferedImage img, double f)
6. declareNewBufferedImage(int x, int y)
7. declareNewBufferedImageAndCopy(BufferedImage img)
8. depalettize(BufferedImage img, int maxBytes)
9. determineBackgroundColor(BufferedImage bim)