CAPTURE A SECTION OF SCREEN USING SELENIUM WEBDRIVER

Capturing a section of the screen involves:

1) Performing a screen capture as usual and saving the created image to disk.
2) Getting the saved image and cutting/ cropping out a section of it as required into another image file.

import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import javax.imageio.ImageIO;

import org.apache.commons.io.FileUtils;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class CaptureScreenSection {

public static void main(String[] args) throws IOException {

//Initialise firefox browser
WebDriver driver = new FirefoxDriver();

/* Next line makes the browser wait for 7 seconds before declaring it cant find an element. 
Good for slow loading websites*/
driver.manage().timeouts().implicitlyWait(7,TimeUnit.SECONDS);
driver.get("http://www.sojicity.com/"); 

// Step 01: Take Screen shot and create the file
System.out.println("Taking Screen Shot");
File screenshot = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(screenshot, new File("c:\\logicandtricks\\screenshot.jpg"));

// Step 02: Cut/ Crop out a section of the saved photo above and save the cropped photo
Image orig = ImageIO.read(new File("c:\\logicandtricks\\screenshot.jpg"));
int x = 10, y = 20, w = 500, h = 510;  // define the sections to cut out
BufferedImage bi = new BufferedImage(w, h, BufferedImage.OPAQUE);
bi.getGraphics().drawImage(orig, 0, 0, w, h, x, y, x + w, y + h, null);
ImageIO.write(bi, "jpg", new File("c:\\logicandtricks\\screenshot_cropped.jpg"));

}

} 



Credits: http://www.logicandtricks.com/