CefSharp.OffScreen.Example

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namespace CefSharp.OffScreen.Example
{
    public class Program
    {
        private static ChromiumWebBrowser browser;
 
        public static void Main(string[] args)
        {
            const string testUrl = "http://www.baidu.com/";
 
            Console.WriteLine("This example application will load {0}, take a screenshot, and save it to your desktop.", testUrl);
            Console.WriteLine("You may see a lot of Chromium debugging output, please wait...");
            Console.WriteLine();
 
            // You need to replace this with your own call to Cef.Initialize();
            CefExample.Init();
 
            // Create the offscreen Chromium browser.
            browser = new ChromiumWebBrowser();
 
            // An event that is fired when the first page is finished loading.
            // This returns to us from another thread.
            browser.FrameLoadEnd += BrowserFrameLoadEnd;
 
            // Start loading the test URL in Chrome's thread.
            //browser.Load(testUrl);
            browser.Load("dummy:");
 
            // We have to wait for something, otherwise the process will exit too soon.
            Console.ReadKey();
 
            // Clean up Chromium objects.  You need to call this in your application otherwise
            // you will get a crash when closing.
            Cef.Shutdown();
        }
 
        private static void BrowserFrameLoadEnd(object sender, FrameLoadEndEventArgs e)
        {
            ChromiumWebBrowser browser = sender as ChromiumWebBrowser;
            if (browser.Title == "dummy:")
            {
                browser.LoadHtml("<html><head></head><body><h1>OKOKOK</h1></body></html>", "about:blank");
                return;
            }
 
 
            // Check to ensure it is the main frame which has finished loading
            // (rather than an iframe within the main frame).
            if (e.IsMainFrame)
            {
                // Remove the load event handler, because we only want one snapshot of the initial page.
                browser.FrameLoadEnd -= BrowserFrameLoadEnd;
 
                var task1 = browser.GetSourceAsync();
                task1.Wait();
                string html= task1.Result;
 
                // Wait for the screenshot to be taken.
                var task = browser.ScreenshotAsync();
                task.Wait();
 
                // Make a file to save it to (e.g. C:\Users\jan\Desktop\CefSharp screenshot.png)
                var screenshotPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "CefSharp screenshot.png");
 
                Console.WriteLine();
                Console.WriteLine("Screenshot ready.  Saving to {0}", screenshotPath);
 
                // Save the Bitmap to the path.
                // The image type is auto-detected via the ".png" extension.
                task.Result.Save(screenshotPath);
 
                // We no longer need the Bitmap.
                // Dispose it to avoid keeping the memory alive.  Especially important in 32-bit applications.
                task.Result.Dispose();
 
                Console.WriteLine("Screenshot saved.  Launching your default image viewer...");
 
                // Tell Windows to launch the saved image.
                Process.Start(screenshotPath);
 
                Console.WriteLine("Image viewer launched.  Press any key to exit.");
            }
        }
    }
}

  

本文作者:公众号python学习开发

本文链接:https://www.cnblogs.com/c-x-a/p/7218976.html

版权声明:本作品采用知识共享署名-非商业性使用-禁止演绎 2.5 中国大陆许可协议进行许可。

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