DesktopImageManger.java

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package com.client.conn;

import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.ImageIcon;

/**
 *
 * @author Administrator
 */
public class DesktopImageManger implements Runnable {

    public static boolean scaledImage = false;
    public static long delay = 100;
    static double percentage = 0;
    private ConnectionManager connectionManager = null;
    double newImageWidth;
    double newImageHeight;

    public DesktopImageManger(ConnectionManager connectionManager) {
        this.connectionManager = connectionManager;
    }

    public void run() {
        Image currentImage = null;
        Image nextImage = null;
        ImageComparison comparison = new ImageComparison();
        while (true) {
            try {
                nextImage = getScreenShot();
                if (comparison.compareImge(currentImage, nextImage, percentage)) {
                    //  System.out.println("True");
                } else {
                    //System.out.println("False");
                    connectionManager.sendDataToServer(new ImageIcon(nextImage));
                }
                currentImage = nextImage;
                long currentTime = 0;
                while (currentTime < delay) {
                    System.out.println("current time : " + currentTime);
                    System.out.println("Delay : " + delay);
                    Thread.sleep(1000);
                    currentTime += 1000;
                }

            } catch (IOException ex) {
                Logger.getLogger(DesktopImageManger.class.getName()).log(Level.SEVERE, null, ex);
            } catch (InterruptedException ex) {
                Logger.getLogger(DesktopImageManger.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    private Image getScreenShot() {
        try {
            Toolkit toolkit = Toolkit.getDefaultToolkit();
            Dimension screenSize = toolkit.getScreenSize();
            Rectangle screenRect = new Rectangle(0, 0, screenSize.width, screenSize.height);
            // create screen shot
            Robot robot = new Robot();
            Image image = robot.createScreenCapture(screenRect);
            if (scaledImage) {
                int imgWidth = image.getWidth(null);
                int imgHeight = image.getHeight(null);
                int labelWidth = 148;
                int labelHeight = 83;
                getScalingFactor(imgWidth, imgHeight, labelWidth, labelHeight);
                image = image.getScaledInstance((int) newImageWidth, (int) newImageHeight, Image.SCALE_SMOOTH);
            }
            return image;
        } catch (AWTException ex) {
            Logger.getLogger(DesktopImageManger.class.getName()).log(Level.SEVERE, null, ex);
        }
        return null;
    }

    private void getScalingFactor(int imgWidth, int imgHeight, int labelWidth,
            int labelHeight) {
        int selectedSide = 0;
        int difference = 0;

        if (imgWidth > labelWidth || imgHeight > labelHeight) {
            if (imgWidth > imgHeight) {
                selectedSide = imgWidth;
                difference = imgWidth - labelWidth;
                float percentage = ((float) difference / (float) imgWidth) * 100;

                newImageHeight = imgHeight - (imgHeight * (percentage / 100));
                newImageWidth = imgWidth - difference;
            } else {
                selectedSide = imgHeight;
                difference = imgHeight - labelHeight;
                float percentage = ((float) difference / (float) imgHeight) * 100;

                newImageWidth = imgWidth - (imgWidth * (percentage / 100));
                newImageHeight = imgHeight - difference;
            }
        }
    }
}