代码块:
package demo;
import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebDriverException;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
public class Canvas {
static WebDriver driver;
public static void main(String[] args) {
System.setProperty("webdriver.chrome.driver", "C:\\Utility\\BrowserDrivers\\chromedriver.exe");
ChromeOptions options = new ChromeOptions();
options.addArguments("start-maximized");
options.addArguments("disable-infobars");
options.addArguments("--disable-extensions");
driver = new ChromeDriver(options);
driver.get("https://www.google.co.uk/maps");
WebElement elm = new WebDriverWait(driver, 20).until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector("#scene > div.widget-scene > canvas")));
// Mouse wheel UP or Zoom In
wheel_element(elm, -500, 0, 0);
System.out.println("Mouse wheel UP or Zoom In through Wheel achieved !!!");
// Mouse wheel DOWN or Zoom Out
wheel_element(elm, 120, 0, 0);
System.out.println("Mouse wheel DOWN or Zoom Out through Wheel achieved !!!");
System.out.println("Mouse Scroll through Wheel achieved !!!");
}
public static void wheel_element(WebElement element, int deltaY, int offsetX, int offsetY)
{
try{
String script = "var element = arguments[0];"
+"var deltaY = arguments[1];"
+"var box = element.getBoundingClientRect();"
+"var clientX = box.left + (arguments[2] || box.width / 2);"
+"var clientY = box.top + (arguments[3] || box.height / 2);"
+"var target = element.ownerDocument.elementFromPoint(clientX, clientY);"
+"for (var e = target; e; e = e.parentElement) {"
+"if (e === element) {"
+"target.dispatchEvent(new MouseEvent('mouseover', {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY}));"
+"target.dispatchEvent(new MouseEvent('mousemove', {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY}));"
+"target.dispatchEvent(new WheelEvent('wheel', {view: window, bubbles: true, cancelable: true, clientX: clientX, clientY: clientY, deltaY: deltaY}));"
+"return;"
+"}"
+"}";
WebElement parent = (WebElement) ((JavascriptExecutor) driver).executeScript("return arguments[0].parentNode;", element);
((JavascriptExecutor) driver).executeScript(script, parent, deltaY, offsetX, offsetY);
}catch(WebDriverException e)
{
System.out.println("Exception caught in Catch block");
}
}
}