Java BufferedImage Transparent makeTransparency(BufferedImage image, int color)

Description

make Transparency

License

Apache License

Declaration

public static void makeTransparency(BufferedImage image, int color) 

Method Source Code

//package com.java2s;
/**/*from   w w w.  j  ava 2 s. c  om*/
 * 
 * Copyright 2008 - 2009
 * 
 * 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.
 * 
 * @project loonframework
 * @author chenpeng
 * @email?ceponline@yahoo.com.cn
 * @version 0.1
 */

import java.awt.image.BufferedImage;

public class Main {

    public static void makeTransparency(BufferedImage image, int color) {
        int width = image.getWidth();
        int height = image.getHeight();
        int arrA[] = getArrayAlpha1D(image);
        int arrC[] = getArrayColor1D(image);
        for (int i = 0; i < width * height; i++) {
            if (arrC[i] == color) {
                arrA[i] = 0;
            }
        }
        setArrayAlpha(image, arrA);
    }

    public static int[] getArrayAlpha1D(BufferedImage image) {
        int width = image.getWidth();
        int height = image.getHeight();
        int array[] = new int[width * height];
        image.getAlphaRaster().getPixels(0, 0, width, height, array);
        return array;
    }

    public static int[] getArrayColor1D(BufferedImage image) {
        int width = image.getWidth();
        int height = image.getHeight();
        int array[] = new int[width * height];
        image.getRGB(0, 0, width, height, array, 0, width);
        return array;
    }

    public static void setArrayAlpha(BufferedImage image, int[] array) {
        int width = image.getWidth();
        int height = image.getHeight();
        image.getAlphaRaster().setPixels(0, 0, width, height, array);
    }

    public static void setArrayAlpha(BufferedImage image, int[][] array) {
        int width = image.getWidth();
        int height = image.getHeight();
        int arr[] = new int[width * height];
        int j = 0;
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++, j++) {
                arr[j] = array[x][y];
            }
        }
        setArrayAlpha(image, arr);
    }
}

Related

1. applyTransparency(BufferedImage src, float alpha)
2. bordersNonTransparentPixel(BufferedImage data, int wid, int hei, boolean[] traced, int x, int y)
3. ConvToTransparentImage(BufferedImage src, float alpha)
4. cutTransparentBorder(BufferedImage src)
5. fixTransparency(String var0, BufferedImage var1)
6. makeTranspBufferedImage(Image image)
7. nonTransparentPixels(BufferedImage image)
8. pickBestTransparency(BufferedImage image)
9. setTranformImagePixels(BufferedImage origImg, Color paramColor, int colorRangePerc, Vector transPixel, Shape cutoutShape)