Java BufferedImage to Transparent getTransperentImage(BufferedImage origImage, BufferedImage compImg)

Description

get Transperent Image

License

Apache License

Declaration

public static BufferedImage getTransperentImage(BufferedImage origImage, BufferedImage compImg) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.awt.BorderLayout;

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class Main {
    public static BufferedImage getTransperentImage(BufferedImage origImage, BufferedImage compImg) {
        int i = origImage.getWidth();
        int j = origImage.getHeight();
        // int[][][] origPixels = BufferedImagetoPixel3DRGB(origImage);
        BufferedImage compTransImg = new BufferedImage(i, j, BufferedImage.TYPE_INT_ARGB);

        for (int k = 0; k < j; k++) {
            for (int m = 0; m < i; m++) {
                int color = origImage.getRGB(m, k);
                int compColor = compImg.getRGB(m, k);
                // The result is also a value ranging from 0 (completely
                // transparent) to 255 (completely opaque).
                int alpha = (color >> 24) & 0xff;
                if (alpha == 0) {
                    byte alpha_byte = 0; // Range will 0 to 255
                    setAlphaValue(compTransImg, k, m, 0.0D);
                } else
                    compTransImg.setRGB(m, k, compColor);
            }/*from  ww w.  jav  a  2s. c  o  m*/
        }
        displayImage(compTransImg, "Test");
        return compTransImg;
    }

    public static void setAlphaValue(BufferedImage paramBufferedImage, int row, int col, double paramDouble) {
        int i = -1;
        try {
            i = paramBufferedImage.getRGB(col, row); // Get the ARGB Color Value
        } catch (Throwable localThrowable) {
            System.out.println("Row: " + row + " Col: " + col);
            return;
        }
        int j = i >> 24 & 0xFF; // Alpha
        int k = i >> 16 & 0xFF; // Red
        int m = i >> 8 & 0xFF; // Green
        int n = i & 0xFF; // blue
        // j = (int)(j * paramDouble);
        j = (int) Math.round(paramDouble * j);

        // i = j << 24 & 0xFF000000 | k << 16 & 0xFF0000 | m << 8 & 0xFF00 | n &
        // 0xFF;
        i = ((j << 24) & 0xFF000000) | ((k << 16) & 0x00FF0000) | ((m << 8) & 0x0000FF00) | ((n) & 0x000000FF);

        // System.out.println("Setting Alpha Value: "+row+"x"+col+" = "+i);
        paramBufferedImage.setRGB(col, row, i);
    }

    public static int setAlphaValue(int argb, double alpha) {
        int a = argb >> 24 & 0xFF; // Alpha
        int r = argb >> 16 & 0xFF; // Red
        int g = argb >> 8 & 0xFF; // Green
        int b = argb & 0xFF; // blue
        a = (int) Math.round(alpha * a);

        // argb = a << 24 & 0xFF000000 | r << 16 & 0xFF0000 | g << 8 & 0xFF00 |
        // b & 0xFF;
        argb = ((a << 24) & 0xFF000000) | ((r << 16) & 0x00FF0000) | ((g << 8) & 0x0000FF00) | ((b) & 0x000000FF);
        return argb;
    }

    public static void displayImage(Image img, String mesg) {
        JDialog imgBox = displayImage(img, mesg, 100, 100, 500, 500);
        imgBox.setVisible(true);
    }

    public static JDialog displayImage(Image img, String mesg, int locx, int locy, int sizex, int sizey) {
        JDialog imgBox = new JDialog(new java.awt.Frame(), mesg, false);
        JPanel imgPanel = new JPanel(new BorderLayout());
        imgBox.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
        imgBox.setLocation(locx, locy);
        imgBox.setSize(sizex, sizey);
        imgBox.setContentPane(imgPanel);
        ImageIcon imgIcon = new ImageIcon(img, "");
        JLabel imgLabel = new JLabel(imgIcon);
        imgBox.add(imgLabel, BorderLayout.CENTER);
        return imgBox;
    }

    public static JDialog displayImage(URL resourcePath, String mesg, int locx, int locy, int sizex, int sizey) {
        JDialog imgBox = new JDialog(new java.awt.Frame(), mesg, true);
        JPanel imgPanel = new JPanel(new BorderLayout());
        imgBox.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
        imgBox.setLocation(locx, locy);
        imgBox.setSize(sizex, sizey);
        imgBox.setContentPane(imgPanel);
        ImageIcon imgIcon = new ImageIcon(resourcePath, mesg);
        JLabel imgLabel = new JLabel(imgIcon);
        imgBox.add(imgLabel, BorderLayout.CENTER);
        return imgBox;
    }
}

Related

1. getTransparentImage(BufferedImage i)
2. makeColorTransparent(BufferedImage im, final Color color)
3. makeColorTransparent(BufferedImage im, final Color color)
4. makeColorTransparent(BufferedImage image, Color color)
5. makeColorTransparent(final BufferedImage im, final Color color)