private async void ConfirmButton_Click(object sender, RoutedEventArgs e)
{
if (!string.IsNullOrWhiteSpace(UserNameBox.Text))
{
// Create or open the folder in which the Whitelist is stored
StorageFolder whitelistFolder = await KnownFolders.PicturesLibrary.CreateFolderAsync(GeneralConstants.WhiteListFolderName, CreationCollisionOption.OpenIfExists);
// Create a folder to store this specific user's photos
StorageFolder currentFolder = await whitelistFolder.CreateFolderAsync(UserNameBox.Text, CreationCollisionOption.ReplaceExisting);
// Move the already captured photo the user's folder
await currentIdPhotoFile.MoveAsync(currentFolder);
// Add user to Oxford database
OxfordFaceAPIHelper.AddUserToWhitelist(UserNameBox.Text, currentFolder);
// Stop live camera feed
await webcam.StopCameraPreview();
var parameters = new NewUserPage
{
Dummy = ((Button)sender).Name.ToString(),
ToWelcome = "true",
UserName = UserNameBox.Text
};
// Navigate back to MainPage
this.Frame.Navigate(typeof(MainPage), parameters);
}
}
/// <summary>
/// Called when user hits vitual add user button. Navigates to NewUserPage page.
/// </summary>
private async void NewUserButton_Click(object sender, RoutedEventArgs e)
{
// Stops camera preview on this page, so that it can be started on NewUserPage
await webcam.StopCameraPreview();
//Navigates to NewUserPage, passing through initialized WebcamHelper object
Frame.Navigate(typeof(NewUserPage), webcam);
}
/// <summary>
/// Triggered when the user clicks the delete user button located in the app bar
/// </summary>
private async void DeleteButton_Tapped(object sender, TappedRoutedEventArgs e)
{
// Delete the user's folder
await currentUser.ImageFolder.DeleteAsync();
// Remove user from Oxford
OxfordFaceAPIHelper.RemoveUserFromWhitelist(currentUser.Name);
// Stop camera preview
await webcam.StopCameraPreview();
// Navigate to MainPage
Frame.Navigate(typeof(MainPage));
}
private async void TabView1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (webcam != null && IsWebCamReady)
{
await webcam.StopCameraPreview();
IsWebCamReady = false;
}
}
protected async override void OnNavigatedFrom(NavigationEventArgs e)
{
await webcam.StopCameraPreview();
}
private async void AuthenticateUser(string visitorName)
{
await webcam.StopCameraPreview();
this.Frame.Navigate(typeof(WelcomePage), visitorName);
}