private async void btnSave_Clicked(object sender, EventArgs e)
{
Stream image = await SignatureView.GetImageStreamAsync(SignaturePad.Forms.SignatureImageFormat.Png);
CSignature unterschrift = new CSignature();
unterschrift.Name = EntryName.Text;
unterschrift.Id = Guid.NewGuid();
unterschrift.Signature1 = ReadFully(image); // serializeData(points);
bool rc = await App.restManager.SetSignatureAsync(unterschrift);
if (rc)
{
if (_listIndex == 0)
{
rc = await App.restManager.SetSignatureAssign(unterschrift.Id.ToString(), _actOrderAchievement.IdOrder.ToString(), _actOrderAchievement.DateTimeAchie);
_actOrderAchievement.IdSignature = unterschrift.Id;
}
else if (_listIndex == 1)
{
rc = await App.restManager.SetSignatureAssign(unterschrift.Id.ToString(), _actOrderAchievement.IdOrder.ToString(), DateTime.MinValue);
_actOrderAchievement.IdSignatureOrder = unterschrift.Id;
}
DependencyService.Get <IMessage>().ShortAlert("Unterschrift gespeichert.");
}
await Navigation.PopModalAsync();
}
private async void OnGetImage(object sender, EventArgs e)
{
var settings = new ImageConstructionSettings
{
Padding = 12,
StrokeColor = Color.FromRgb(25, 25, 25),
BackgroundColor = Color.FromRgb(225, 225, 225),
DesiredSizeOrScale = 2f
};
var image = await SignatureView.GetImageStreamAsync(SignatureImageFormat.Png, settings);
if (image != null)
{
/*
* DataSource.SignatureImage = new Image
* {
* Aspect = Aspect.AspectFit,
* Source = ImageSource.FromStream(() => image)
* };
*/
DataSource.SignatureStream = image;
}
await Navigation.PopModalAsync();
}
async void copystreamtoVM(CloseStopVM vm)
{
Dispatcher.BeginInvokeOnMainThread((Action)(async() =>
{
using (var bitmap = await SignatureView.GetImageStreamAsync(SignatureImageFormat.Png, Color.Black, Color.White, 1f))
{
MemoryStream signatureMemoryStream = new MemoryStream();
bitmap.CopyToAsync(signatureMemoryStream, (int)bitmap.Length);
vm.Signature = signatureMemoryStream.ToArray();
}
})
);
}
protected override void OnBindingContextChanged()
{
base.OnBindingContextChanged();
var vm = (CloseStopVM)BindingContext; // Warning, the BindingContext View <-> ViewModel is already set
vm.SignatureFromStream = async() =>
{
if (SignatureView.Points.Count() > 0)
{
using (var stream = await SignatureView.GetImageStreamAsync(SignaturePad.Forms.SignatureImageFormat.Png))
{
return(await ImageConverter.ReadFully(stream));
}
}
return(await Task.Run(() => (byte[])null));
};
}
