/// <summary>
/// Triggered when webcam feed loads both for the first time and every time this page is navigated to.
/// If no WebcamHelper has been created, it creates one. Otherwise, simply restarts webcam preview feed on page.
/// </summary>
private async void WebcamFeed_Loaded(object sender, RoutedEventArgs e)
{
if (webcam == null || !webcam.IsInitialized())
{
// Initialize Webcam Helper
webcam = new WebcamHelper();
await webcam.InitializeCameraAsync();
// Set source of WebcamFeed on MainPage.xaml
WebcamFeed.Source = webcam.mediaCapture;
// Check to make sure MediaCapture isn't null before attempting to start preview. Will be null if no camera is attached.
if (WebcamFeed.Source != null)
{
// Start the live feed
await webcam.StartCameraPreview();
}
}
else if (webcam.IsInitialized())
{
WebcamFeed.Source = webcam.mediaCapture;
// Check to make sure MediaCapture isn't null before attempting to start preview. Will be null if no camera is attached.
if (WebcamFeed.Source != null)
{
await webcam.StartCameraPreview();
}
}
}
/// <summary>
/// Triggered every time the page is navigated to.
/// </summary>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
try
{
//Sets passed through WecamHelper from MainPage as local webcam object
webcam = e.Parameter as WebcamHelper;
}
catch (Exception exception)
{
Debug.WriteLine("Error when navigating to NewUserPage: " + exception.Message);
// Navigate back to main page
Frame.Navigate(typeof(MainPage));
}
}
/// <summary>
/// Triggered every time the page is navigated to.
/// </summary>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
try
{
// Catches the passed UserProfilePage parameters
UserProfileObject userProfileParameters = e.Parameter as UserProfileObject;
// Sets current user as the passed through Visitor object
currentUser = userProfileParameters.Visitor;
// Sets the VisitorNameBlock as the current user's name
VisitorNameBlock.Text = currentUser.Name;
// Sets the local WebcamHelper as the passed through intialized one
webcam = userProfileParameters.WebcamHelper;
}
catch
{
// Something went wrong... It's likely the page was navigated to without a Visitor parameter. Navigate back to MainPage
Frame.Navigate(typeof(MainPage));
}
}
