private void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_Status_InitializingCamera;
_cameraEffect = new Effects {
PhotoCaptureDevice = App.Camera, GlobalAlpha = 0.5
};
_cameraEffect.SetTexture(App.Texture.File);
if (App.Texture.IsPositional)
{
DragHintText.Visibility = Visibility.Visible;
PinchHintText.Visibility = Visibility.Visible;
_angle = 0;
_initialAngle = 0;
_scale = DefaultScale;
_position = new Point(0.5, 0.5);
_initialPosition = new Point(0.5, 0.5);
RefreshTargetArea();
}
else
{
DragHintText.Visibility = Visibility.Collapsed;
PinchHintText.Visibility = Visibility.Collapsed;
}
LevelSlider.Value = 0.5;
_cameraStreamSource = new CameraStreamSource(_cameraEffect, App.Camera.CaptureResolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement {
Stretch = Stretch.UniformToFill, BufferingTime = new TimeSpan(0)
};
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
StatusTextBlock.Text = _cameraEffect.EffectName;
}
/// <summary>
/// If camera has not been initialized when navigating to this page, initialization
/// will be started asynchronously in this method. Once initialization has been
/// completed the camera will be set as a source to the VideoBrush element
/// declared in XAML. On-screen controls are enabled when camera has been initialized.
/// </summary>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
if (_photoCaptureDevice != null)
{
_photoCaptureDevice.Dispose();
_photoCaptureDevice = null;
}
ShowProgress(AppResources.InitializingCameraText);
await InitializeCamera(CameraSensorLocation.Back);
HideProgress();
BackgroundVideoBrush.SetSource(_photoCaptureDevice);
SetScreenButtonsEnabled(true);
SetCameraButtonsEnabled(true);
Storyboard sb = (Storyboard)Resources["CaptureAnimation"];
sb.Stop();
SetOrientation(this.Orientation);
base.OnNavigatedTo(e);
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
NavigationContext.QueryString.TryGetValue("index", out _dateIndex);
if (_photoCaptureDevice != null)
{
_photoCaptureDevice.Dispose();
_photoCaptureDevice = null;
}
ProgressIndicator.IsRunning = true;
SetScreenButtonsEnabled(false);
SetCameraButtonsEnabled(false);
await InitializeCamera(CameraSensorLocation.Back);
BackgroundVideoBrush.SetSource(_photoCaptureDevice);
ProgressIndicator.IsRunning = false;
SetScreenButtonsEnabled(true);
SetCameraButtonsEnabled(true);
base.OnNavigatedTo(e);
}
private async void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_StatusTextBlock_StartingCamera;
_cameraEffect = new Effects()
{
PhotoCaptureDevice = App.Camera
};
_cameraStreamSource = new CameraStreamSource(_cameraEffect, App.Camera.CaptureResolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement {
Stretch = Stretch.UniformToFill, BufferingTime = new TimeSpan(0)
};
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
StatusTextBlock.Text = _cameraEffect.EffectName;
}
