Source Code : AlphaComposite

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

AlphaComposite

  

import java.awt.AlphaComposite;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class AlphaCompositeDemo extends JFrame {
  MyCanvas canvas;

  JSlider slider = new JSlider(JSlider.HORIZONTAL, 0, 100, 5);

  JComboBox rulesBox;

  String[] rulesLabels = { "Clear", "Source", "Source-over",
      "Destination-over", "Source-in", "Destination-in", "Source-out",
      "Destination-out" };

  int[] rules = { AlphaComposite.CLEAR, AlphaComposite.SRC,
      AlphaComposite.SRC_OVER, AlphaComposite.DST_OVER,
      AlphaComposite.SRC_IN, AlphaComposite.DST_IN,
      AlphaComposite.SRC_OUT, AlphaComposite.DST_OUT };

  public AlphaCompositeDemo() {
    super();
    Container container = getContentPane();

    canvas = new MyCanvas();
    container.add(canvas);

    rulesBox = new JComboBox(rulesLabels);
    rulesBox.setSelectedIndex(0);
    rulesBox.setAlignmentX(Component.LEFT_ALIGNMENT);
    rulesBox.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        JComboBox cb = (JComboBox) e.getSource();
        canvas.compositeRule = rules[cb.getSelectedIndex()];
        canvas.repaint();
      }
    });

    slider.setPaintTicks(true);
    slider.setMajorTickSpacing(25);
    slider.setMinorTickSpacing(25);
    slider.setPaintLabels(true);
    slider.addChangeListener(new ChangeListener() {
      public void stateChanged(ChangeEvent e) {
        JSlider slider = (JSlider) e.getSource();
        canvas.alphaValue = (float) slider.getValue() / 100;
        canvas.repaint();
      }
    });

    
    
    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(1, 3));
    panel.add(rulesBox);
    panel.add(new JLabel("Alpha Adjustment x E-2: ", JLabel.RIGHT));
    panel.add(slider);
    container.add(panel, BorderLayout.SOUTH);

    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    setSize(500,300);
    setVisible(true);
  }

  public static void main(String arg[]) {
    new AlphaCompositeDemo();
  }

  class MyCanvas extends JLabel {
    float alphaValue = 1.0f;

    int compositeRule = AlphaComposite.CLEAR;

    AlphaComposite ac;

    public void paint(Graphics g) {
      Graphics2D g2D = (Graphics2D) g;

      int w = getSize().width;
      int h = getSize().height;

      BufferedImage bi = new BufferedImage(w, h,
          BufferedImage.TYPE_INT_ARGB);
      Graphics2D big = bi.createGraphics();

      ac = AlphaComposite.getInstance(compositeRule, alphaValue);

      big.setColor(Color.red);
      big.drawString("Destination", w / 4, h / 4);
      big.fill(new Ellipse2D.Double(0, h / 3, 2 * w / 3, h / 3));

      big.setColor(Color.blue);
      big.drawString("Source", 3 * w / 4, h / 4);

      big.setComposite(ac);
      big.fill(new Ellipse2D.Double(w / 3, h / 3, 2 * w / 3, h / 3));

      g2D.drawImage(bi, null, 0, 0);
    }
  }

}



           
         
    
  

Thank with us