public async void captureRef(int tag, JSValue options, IReactPromise <string> promise)
{
string format = options["format"].IsNull ? "png" : options["format"].AsString();
double quality = options["quality"].IsNull ? 1.0 : options["quality"].AsDouble();
int width = options["width"].IsNull ? 0 : options["width"].AsInt16();
int height = options["height"].IsNull ? 0 : options["height"].AsInt16();
string result = options["result"].IsNull ? "tmpfile" : options["result"].AsString();
string path = options["path"].IsNull ? null : options["path"].AsString();
if (format != "png" && format != "jpg" && format != "jpeg")
{
promise.Reject(new ReactError {
Code = ViewShot.ErrorUnableToSnapshot, Message = "Unsupported image format: " + format + ". Try one of: png | jpg | jpeg"
});
return;
}
try
{
var control = XamlUIService.FromContext(_context.Handle).ElementFromReactTag(tag) as FrameworkElement;
ViewShot view = new ViewShot();
var output = await view.Execute(control, format, quality, width, height, path, result);
promise.Resolve(output);
}
catch (Exception exc)
{
promise.Reject(new ReactError {
Message = exc.Message, Exception = exc
});
}
}
public void DispatchEvent <T>(FrameworkElement view, string eventName, T arg)
{
var argWriter = arg as JSValueArgWriter;
if (argWriter != null)
{
XamlUIService.FromContext(Handle).DispatchEvent(view, eventName, argWriter);
}
else
{
XamlUIService.FromContext(Handle).DispatchEvent(view, eventName, (IJSValueWriter writer) => writer.WriteValue(arg));
}
}