} // End Function ConnectToChrome
public static async System.Threading.Tasks.Task ConvertDataAsync(ConversionData conversionData)
{
#if false
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
#endif
MasterDevs.ChromeDevTools.IChromeSessionFactory chromeSessionFactory = new MasterDevs.ChromeDevTools.ChromeSessionFactory();
using (ConnectionInfo connectionInfo = await ConnectToChrome(conversionData.ChromePath, conversionData.RemoteDebuggingUri))
{
MasterDevs.ChromeDevTools.IChromeSession chromeSession = chromeSessionFactory.Create(connectionInfo.SessionInfo.WebSocketDebuggerUrl);
// STEP 3 - Send a command
//
// Here we are sending a commands to tell chrome to set the viewport size
// and navigate to the specified URL
await chromeSession.SendAsync(new SetDeviceMetricsOverrideCommand
{
Width = conversionData.ViewPortWidth,
Height = conversionData.ViewPortHeight,
Scale = 1
});
MasterDevs.ChromeDevTools.CommandResponse <NavigateCommandResponse> navigateResponse =
await chromeSession.SendAsync(new NavigateCommand
{
// Url = "http://www.google.com"
Url = "about:blank"
});
System.Console.WriteLine("NavigateResponse: " + navigateResponse.Id);
MasterDevs.ChromeDevTools.CommandResponse <SetDocumentContentCommandResponse> setContentResponse =
await chromeSession.SendAsync(new SetDocumentContentCommand()
{
FrameId = navigateResponse.Result.FrameId,
Html = conversionData.Html
}
);
// private static double cm2inch(double centimeters) { return centimeters * 0.0393701; }
UnitConversion_t cm2inch = delegate(double centimeters) { return(centimeters * 0.393701); };
// private static double mm2inch(double milimeters) { return milimeters * 0.0393701; }
UnitConversion_t mm2inch = delegate(double milimeters) { return(milimeters * 0.0393701); };
PrintToPDFCommand printCommand2 = new PrintToPDFCommand()
{
Scale = 1,
MarginTop = 0,
MarginLeft = 0,
MarginRight = 0,
MarginBottom = 0,
PrintBackground = true,
Landscape = false,
// PaperWidth = cm2inch(21),
// PaperHeight = cm2inch(29.7),
// PaperWidth = cm2inch(conversionData.PageWidth),
// PaperHeight = cm2inch(conversionData.PageHeight)
PaperWidth = mm2inch(conversionData.PageWidth),
PaperHeight = mm2inch(conversionData.PageHeight)
};
// await System.Threading.Tasks.Task2.Delay(300);
if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.GetVersion))
{
try
{
System.Diagnostics.Debug.WriteLine("Getting browser-version");
MasterDevs.ChromeDevTools.CommandResponse <GetVersionCommandResponse> version =
await chromeSession.SendAsync(new GetVersionCommand());
System.Diagnostics.Debug.WriteLine("Got browser-version");
conversionData.Version = version.Result;
}
catch (System.Exception ex)
{
conversionData.Exception = ex;
System.Diagnostics.Debug.WriteLine(ex.Message);
}
} // End if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.GetVersion))
if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.ConvertToImage))
{
try
{
System.Diagnostics.Debug.WriteLine("Taking screenshot");
MasterDevs.ChromeDevTools.CommandResponse <CaptureScreenshotCommandResponse> screenshot =
await chromeSession.SendAsync(new CaptureScreenshotCommand { Format = "png" });
System.Diagnostics.Debug.WriteLine("Screenshot taken.");
conversionData.PngData = System.Convert.FromBase64String(screenshot.Result.Data);
}
catch (System.Exception ex)
{
conversionData.Exception = ex;
System.Diagnostics.Debug.WriteLine(ex.Message);
}
} // End if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.ConvertToImage))
if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.ConvertToPdf))
{
try
{
System.Diagnostics.Debug.WriteLine("Printing PDF");
MasterDevs.ChromeDevTools.CommandResponse <PrintToPDFCommandResponse> pdf =
await chromeSession.SendAsync(printCommand2);
System.Diagnostics.Debug.WriteLine("PDF printed.");
conversionData.PdfData = System.Convert.FromBase64String(pdf.Result.Data);
}
catch (System.Exception ex)
{
conversionData.Exception = ex;
System.Diagnostics.Debug.WriteLine(ex.Message);
}
} // End if (conversionData.ChromiumActions.HasFlag(ChromiumActions_t.ConvertToPdf))
System.Console.WriteLine("Closing page");
await ClosePage(chromeSession, navigateResponse.Result.FrameId, true);
System.Console.WriteLine("Page closed");
} // End Using connectionInfo
} // End Sub ConvertDataAsync
} // End Sub KillHeadless
private static void Main(string[] args)
{
KillHeadless();
Task.Run(async() =>
{
// synchronization
System.Threading.ManualResetEventSlim screenshotDone = new System.Threading.ManualResetEventSlim();
// STEP 1 - Run Chrome
IChromeProcessFactory chromeProcessFactory = new ChromeProcessFactory(new StubbornDirectoryCleaner());
using (IChromeProcess chromeProcess = chromeProcessFactory.Create(9222, true))
{
// STEP 2 - Create a debugging session
//ChromeSessionInfo sessionInfo = (await chromeProcess.GetSessionInfo()).LastOrDefault();
ChromeSessionInfo[] sessionInfos = await chromeProcess.GetSessionInfo();
ChromeSessionInfo sessionInfo = (sessionInfos != null && sessionInfos.Length > 0) ?
sessionInfos[sessionInfos.Length - 1]
: new ChromeSessionInfo();
IChromeSessionFactory chromeSessionFactory = new ChromeSessionFactory();
IChromeSession chromeSession = chromeSessionFactory.Create(sessionInfo.WebSocketDebuggerUrl);
// STEP 3 - Send a command
//
// Here we are sending a commands to tell chrome to set the viewport size
// and navigate to the specified URL
await chromeSession.SendAsync(new SetDeviceMetricsOverrideCommand
{
Width = ViewPortWidth,
Height = ViewPortHeight,
Scale = 1
});
var navigateResponse = await chromeSession.SendAsync(new NavigateCommand
{
Url = "http://www.google.com"
});
System.Console.WriteLine("NavigateResponse: " + navigateResponse.Id);
// STEP 4 - Register for events (in this case, "Page" domain events)
// send an command to tell chrome to send us all Page events
// but we only subscribe to certain events in this session
ICommandResponse pageEnableResult = await chromeSession.SendAsync <Protocol.Chrome.Page.EnableCommand>();
System.Console.WriteLine("PageEnable: " + pageEnableResult.Id);
chromeSession.Subscribe <LoadEventFiredEvent>(loadEventFired =>
{
// we cannot block in event handler, hence the task
Task.Run(async() =>
{
System.Console.WriteLine("LoadEventFiredEvent: " + loadEventFired.Timestamp);
long documentNodeId = (await chromeSession.SendAsync(new GetDocumentCommand())).Result.Root.NodeId;
long bodyNodeId =
(await chromeSession.SendAsync(new QuerySelectorCommand
{
NodeId = documentNodeId,
Selector = "body"
})).Result.NodeId;
long height = (await chromeSession.SendAsync(new GetBoxModelCommand {
NodeId = bodyNodeId
})).Result.Model.Height;
await chromeSession.SendAsync(new SetDeviceMetricsOverrideCommand
{
Width = ViewPortWidth,
Height = height,
Scale = 1
});
System.Console.WriteLine("Taking screenshot");
var screenshot = await chromeSession.SendAsync(new CaptureScreenshotCommand {
Format = "png"
});
byte[] data = System.Convert.FromBase64String(screenshot.Result.Data);
System.IO.File.WriteAllBytes("output.png", data);
System.Console.WriteLine("Screenshot stored");
PrintToPDFCommand printCommand = new PrintToPDFCommand()
{
Scale = 1,
MarginTop = 0,
MarginLeft = 0,
MarginRight = 0,
MarginBottom = 0,
PrintBackground = true,
Landscape = false,
PaperWidth = cm2inch(21),
PaperHeight = cm2inch(29.7)
};
System.Console.WriteLine("Printing PDF");
CommandResponse <PrintToPDFCommandResponse> pdf = await chromeSession.SendAsync(printCommand);
System.Console.WriteLine("PDF printed.");
byte[] pdfData = System.Convert.FromBase64String(pdf.Result.Data);
System.IO.File.WriteAllBytes("output.pdf", pdfData);
System.Console.WriteLine("PDF stored");
// tell the main thread we are done
screenshotDone.Set();
});
});
// wait for screenshoting thread to (start and) finish
System.Console.WriteLine("Exiting ..");
screenshotDone.Wait();
}
}).Wait();
}
