public void StartOffscreenRender(string url)
{
#if WITHCEF
var settings = new CefSharp.OffScreen.CefSettings()
{
//By default CefSharp will use an in-memory cache, you need to specify a Cache Folder to persist data
CachePath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache"),
};
// play with surfaces
settings.SetOffScreenRenderingBestPerformanceArgs();
//Perform dependency check to make sure all relevant resources are in our output directory.
// Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
var rqs = new RequestContextSettings();
rqs.CachePath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache");
var rq = new RequestContext(rqs, null);
var bs = new BrowserSettings();
bs.BackgroundColor = 0xff000000;
this.theOffscreenBrowser = new CefSharp.OffScreen.ChromiumWebBrowser(url, bs, rq);
this.theOffscreenBrowser.Size = new System.Drawing.Size(400, 800);
this.theOffscreenBrowser.LoadingStateChanged += TheBrowser_LoadingStateChanged;
this.theOffscreenBrowser.FrameLoadEnd += TheOffscreenBrowser_FrameLoadEnd;
/// <summary>
/// Initialize OffScreen Cef
/// Note that we MUST use OffScreen not WinForms CefSettings, can only use one Initialize
/// </summary>
public static void InitializeOffScreenCef()
{
if (Cef.IsInitialized)
{
return;
}
Stopwatch sw = Stopwatch.StartNew();
//Monitor parent process exit and close subprocesses if parent process exits first
//This will at some point in the future becomes the default
CefSharpSettings.SubprocessExitIfParentProcessClosed = true;
var settings = new CefSharp.OffScreen.CefSettings(); // not that we MUST use OffScreen not WinForms CefSettings
settings.CachePath = // By default CefSharp will use an in-memory cache, you need to specify a Cache Folder to persist data
Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "CefSharp\\Cache");
settings.SetOffScreenRenderingBestPerformanceArgs();
//Perform dependency check to make sure all relevant resources are in our output directory.
Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
var cefVersion = string.Format("Chromium: {0}, CEF: {1}, CefSharp: {2}",
Cef.ChromiumVersion, Cef.CefVersion, Cef.CefSharpVersion);
if (Debug)
{
DebugLog.StopwatchMessage("OffScreen Cef initialized for " + cefVersion + ", Time: ", sw);
}
return;
}
