selenium - 使用 Selenium WebDriver 获取网页在屏幕上的位置

Question

有没有办法使用 Selenium WebDriver 获取 HTML 窗口(页面主体)的屏幕坐标？

Answer 1

见过几次，但还没有从 WebDriver 找到一个优雅的解决方案(他们有一个参数，看起来在 ILocatable 设置中支持，但该方法尚未实现)。

我所做的是使用 UIAutomation 获取窗口 AutomationElement 并使用 Treewalker 查找窗口的实际对象 - 缺点是我注意到浏览器偶尔会更新其窗口，因此条件必须每隔一段时间更改一次容纳。

这里是一些示例代码(我在这里删除了一些公司代码，这样对我来说更优雅，但这应该适用于 C#)

    public static Rectangle GetAbsCoordinates(this IWebElement element)
    {
        var driver = GetDriver(element);
        var handle = GetIntPtrHandle(driver);
        var ae = AutomationElement.FromHandle(handle);
        AutomationElement doc = null;
        var caps = ((RemoteWebDriver) driver).Capabilities;
        var browserName = caps.BrowserName;
        switch (browserName)
        {
            case "safari":
                var conditions = (new AndCondition(new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Pane),
                    new PropertyCondition(AutomationElement.ClassNameProperty, "SearchableWebView")));
                doc = ae.FindFirst(TreeScope.Descendants, conditions);
                break;
            case "firefox":
                doc = ae.FindFirst(TreeScope.Descendants, new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document));
                break;
            case "chrome":
                doc = ae.FindFirst(TreeScope.Descendants, new PropertyCondition(AutomationElement.NameProperty, "Chrome Legacy Window"));
                if (doc == null)
                {
                    doc = ae.FindFirst(TreeScope.Descendants, new PropertyCondition(AutomationElement.NameProperty, "Google Chrome"));
                    if (doc == null)
                        throw new Exception("unable to find element containing browser window");
                    doc = doc.FindFirst(TreeScope.Descendants, new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Document));
                }
                break;
            case "internet explorer":
                doc = ae.FindFirst(TreeScope.Descendants, new AndCondition(new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Pane),
                    new PropertyCondition(AutomationElement.ClassNameProperty, "TabWindowClass")));
                break;
        }

        if (doc == null)
            throw new Exception("unable to find element containing browser window");

        var iWinLeft = (int) doc.Current.BoundingRectangle.Left;
        var iWinTop = (int)doc.Current.BoundingRectangle.Top;

        var coords = ((ILocatable) element).Coordinates;
        var rect = new Rectangle(iWinLeft + coords.LocationInDom.X, iWinTop + coords.LocationInDom.Y, element.Size.Width, element.Size.Height);
        return rect;
    }

    public static IWebDriver GetDriver(this IWebElement e)
    {
        return ((IWrapsDriver)e).WrappedDriver;
    }

    public static IntPtr GetIntPtrHandle(this IWebDriver driver, int timeoutSeconds = Timeout)
    {
        var end = DateTime.Now.AddSeconds(timeoutSeconds);
        while(DateTime.Now < end)
        {
            // Searching by AutomationElement is a bit faster (can filter by children only)
            var ele = AutomationElement.RootElement;
            foreach (AutomationElement child in ele.FindAll(TreeScope.Children, Condition.TrueCondition))
            {
                if (!child.Current.Name.Contains(driver.Title)) continue;
                return new IntPtr(child.Current.NativeWindowHandle);;
            }
        }
        return IntPtr.Zero;
    }