public async Task <byte[]> CaptureImage(string url, int?width, int?height)
{
if (string.IsNullOrWhiteSpace(url))
{
url = "http://www.rdacorp.com/";
}
if (!width.HasValue)
{
width = 1280;
}
if (!height.HasValue)
{
height = 1024;
}
var newSessionInfo = await CreateNewSession();
try
{
using (var session = new ChromeSession(newSessionInfo.WebSocketDebuggerUrl))
{
await session.Page.Enable();
//Set the viewport size
await session.Emulation.SetDeviceMetricsOverride(new ChromeDevTools.Runtime.Emulation.SetDeviceMetricsOverrideCommand()
{
Width = (long)width,
Height = (long)height,
DeviceScaleFactor = 0,
Mobile = false,
});
using (var navigatorWatcher = new NavigatorWatcher(session))
{
await navigatorWatcher.Start();
var navigateResult = await session.Page.Navigate(new NavigateCommand
{
Url = url
}, millisecondsTimeout : 120 * 1000);
await navigatorWatcher.WaitForNetworkIdle();
}
var screenshot = await session.Page.CaptureScreenshot(new CaptureScreenshotCommand()
{
Format = "png",
Clip = new Viewport()
{
X = 0,
Y = 0,
Width = width.Value,
Height = height.Value,
Scale = 1.0,
}
}, millisecondsTimeout : 120 * 1000);
if (!String.IsNullOrWhiteSpace(screenshot.Data))
{
return(Convert.FromBase64String(screenshot.Data));
}
return(new byte[] { });
}
}
finally
{
await CloseSession(newSessionInfo);
}
}
public async Task <byte[]> ConvertHtmlToPdf(string html, int?width, int?height, bool?landscape, bool?printBackground)
{
if (string.IsNullOrWhiteSpace(html))
{
html = "<html><body>Hello, World!</body></html>";
}
if (!width.HasValue)
{
width = 1280;
}
if (!height.HasValue)
{
height = 1024;
}
var newSessionInfo = await CreateNewSession();
try
{
using (var session = new ChromeSession(newSessionInfo.WebSocketDebuggerUrl))
{
await session.Page.Enable();
//Set the viewport size
await session.Emulation.SetDeviceMetricsOverride(new ChromeDevTools.Runtime.Emulation.SetDeviceMetricsOverrideCommand()
{
Width = (long)width,
Height = (long)height,
DeviceScaleFactor = 0,
Mobile = false,
});
var frameTreeResponse = await session.Page.GetFrameTree(new GetFrameTreeCommand());
using (var navigatorWatcher = new NavigatorWatcher(session))
{
await navigatorWatcher.Start();
var setDocumentContentResult = session.Page.SetDocumentContent(new SetDocumentContentCommand()
{
FrameId = frameTreeResponse.FrameTree.Frame.Id,
Html = html
}, millisecondsTimeout: 120 * 1000);
await navigatorWatcher.WaitForNetworkIdle();
}
var pdf = await session.Page.PrintToPDF(new PrintToPDFCommand()
{
PrintBackground = printBackground,
Landscape = landscape,
}, millisecondsTimeout : 120 * 1000);
if (!String.IsNullOrWhiteSpace(pdf.Data))
{
return(Convert.FromBase64String(pdf.Data));
}
return(new byte[] { });
}
}
finally
{
await CloseSession(newSessionInfo);
}
}
public async Task <byte[]> CapturePdf(string url, int?width, int?height, bool?landscape, bool?printBackground)
{
if (string.IsNullOrWhiteSpace(url))
{
url = "http://www.rdacorp.com/";
}
if (!width.HasValue)
{
width = 1280;
}
if (!height.HasValue)
{
height = 1024;
}
var newSessionInfo = await CreateNewSession();
try
{
using (var session = new ChromeSession(newSessionInfo.WebSocketDebuggerUrl))
{
//Set the viewport size
await session.Emulation.SetDeviceMetricsOverride(new ChromeDevTools.Runtime.Emulation.SetDeviceMetricsOverrideCommand()
{
Width = (long)width,
Height = (long)height,
DeviceScaleFactor = 0,
Mobile = false,
});
using (var navigatorWatcher = new NavigatorWatcher(session))
{
await navigatorWatcher.Start();
var navigateResult = await session.Page.Navigate(new NavigateCommand
{
Url = url
}, millisecondsTimeout : 120 * 1000);
await navigatorWatcher.WaitForNetworkIdle();
}
var pdf = await session.Page.PrintToPDF(new PrintToPDFCommand()
{
PrintBackground = printBackground,
Landscape = landscape,
}, millisecondsTimeout : 120 * 1000);
if (!String.IsNullOrWhiteSpace(pdf.Data))
{
return(Convert.FromBase64String(pdf.Data));
}
return(new byte[] { });
}
}
finally
{
await CloseSession(newSessionInfo);
}
}
