/// <summary>
/// Creates and initializes a private AppDomain and therein loads and initializes the
/// wkhtmltopdf library. Attaches to the current AppDomain's DomainUnload event in IIS environments
/// to ensure that on re-deploy, the library is freed so the new AppDomain will be able to use it.
/// </summary>
private static void SetupAppDomain()
{
var dirName = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
var setup = new AppDomainSetup()
{
ApplicationBase = dirName
};
Factory.operatingDomain = AppDomain.CreateDomain("pechkin_internal_domain", null, setup);
Func <object> del = () =>
{
Factory.operatingDomain.SetData("useX11Graphics", Factory.UseX11Graphics);
Factory.operatingDomain.DoCallBack(() =>
{
PechkinBindings.wkhtmltopdf_init((bool)AppDomain.CurrentDomain.GetData("useX11Graphics") ? 1 : 0);
});
return(null);
};
SynchronizedDispatcher.Invoke(del);
if (AppDomain.CurrentDomain.IsDefaultAppDomain() == false)
{
AppDomain.CurrentDomain.DomainUnload += Factory.TearDownAppDomain;
}
}
/// <summary>
/// Unloads the private AppDomain and the wkhtmltopdf library, and if applicable, destroys
/// the synchronization thread.
/// </summary>
/// <param name="sender">Typically a null value, not used in the method.</param>
/// <param name="e">Typically EventArgs.Empty, not used in the method.</param>
private static void TearDownAppDomain(object sender, EventArgs e)
{
if (Factory.operatingDomain != null)
{
Func <object> del = () =>
{
Factory.operatingDomain.DoCallBack(() => PechkinBindings.wkhtmltopdf_deinit());
return(null);
};
SynchronizedDispatcher.Invoke(del);
AppDomain.Unload(Factory.operatingDomain);
foreach (ProcessModule module in Process.GetCurrentProcess().Modules)
{
if (module.ModuleName == "wkhtmltox.dll")
{
while (WinApiHelper.FreeLibrary(module.BaseAddress))
{
}
}
}
Factory.operatingDomain = null;
}
SynchronizedDispatcher.Terminate();
}
public byte[] Convert(Uri url)
{
return(SynchronizedDispatcher.Invoke(() => this.remoteInstance.Convert(url)));
}
public byte[] Convert(string html)
{
return(SynchronizedDispatcher.Invoke(() => this.remoteInstance.Convert(html)));
}
public byte[] Convert(ObjectSettings settings)
{
return(SynchronizedDispatcher.Invoke(() => this.remoteInstance.Convert(settings)));
}
public byte[] Convert(HtmlToPdfDocument document)
{
return(SynchronizedDispatcher.Invoke(() => this.remoteInstance.Convert(document)));
}