apply pixel modifier to the Java Micro edition image. - Java 2D Graphics

Java examples for 2D Graphics:BufferedImage Pixel

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Description

apply pixel modifier to the Java Micro edition image.

Demo Code

/*// w  ww  . ja  v  a  2s. co m
 * This file is a part of the TUBE42 imagelib, released under the LGPL license.
 *
 * Development page: https://github.com/tube42/imagelib
 * License:          http://www.gnu.org/copyleft/lesser.html
 */
import javax.microedition.lcdui.*;

public class Main{
    /**
     * apply pixel modifier to the image.
     * This function also demonstrates use of in-place image modification
     * which consumes less memory.
     *      
     */
    public static Image applyModifier(Image image, PixelModifier modifier) {
        return applyModifier(image, modifier, false);
    }
    public static Image applyModifier(Image image, PixelModifier modifier,
            boolean modify_original) {
        // 1. allocate needed buffers        
        final int w = image.getWidth();
        final int h = image.getHeight();
        int[] buffer1 = new int[w];
        int[] buffer2 = new int[w];

        // 2. get image for in-place modification or create new
        Image ret = modify_original ? image : Image.createImage(w, h);
        Graphics g = ret.getGraphics();

        // 3. for each row, get the pixels
        for (int y = 0; y < h; y++) {
            image.getRGB(buffer1, 0, w, 0, y, w, 1);
            modifier.apply(buffer1, buffer2, w, y);
            g.drawRGB(buffer2, 0, w, 0, y, w, 1, true);
        }

        return ret;
    }
}

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