java - How to capture screenshot of a WebElement within a webpage but not the entire screen or page through Selenium

Question

I have to capture a screenshot of an image of a particular website. Maybe this is 20% off entire screen, I have used below code, it is capturing the entire screen. Which is not helping me to solve the problem.

WebDriver driver = new FirefoxDriver();
driver.get("http://www.google.com/");
File scrFile = ((TakesScreenshot)driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(scrFile, new File("c:\tmp\screenshot.png"));

Answer 1

Can you try this

driver.get("https://stackoverflow.com/");
WebElement element = driver.findElement(By.xpath("//span[(text()='Stack Overflow') and @class='-img _glyph']"));
WrapsDriver wrapsDriver = (WrapsDriver) element;
File screenshot = ((TakesScreenshot) wrapsDriver.getWrappedDriver()).getScreenshotAs(OutputType.FILE);
Rectangle rectangle = new Rectangle(element.getSize().width, element.getSize().height, element.getSize().height, element.getSize().width);
Point location = element.getLocation();
BufferedImage bufferedImage = ImageIO.read(screenshot);
BufferedImage destImage = bufferedImage.getSubimage(location.x, location.y, rectangle.width, rectangle.height);
ImageIO.write(destImage, "png", screenshot);
File file = new File("C:\123.png");
FileUtils.copyFile(screenshot, file);