/// <summary>
/// Constructor.
/// </summary>
/// <param name="element">
/// Manipulation target.
/// </param>
/// <param name="reference">
/// Element that contains the coordinate space used for expressing transformations
/// during manipulations, usually the parent element of Target in the UI tree.
/// </param>
/// <remarks>
/// Transformations during manipulations cannot be expressed in the coordinate space of the manipulation target.
/// Thus <paramref name="element"/> and <paramref name="reference"/> must be different. Usually <paramref name="reference"/>
/// will be an ancestor of <paramref name="element"/> in the UI tree.
/// </remarks>
internal InputProcessor(Windows.UI.Xaml.FrameworkElement element, Windows.UI.Xaml.Controls.Canvas reference)
{
_target = element;
_reference = reference;
_target.AddHandler(UIElement.PointerCanceledEvent, new PointerEventHandler(OnPointerCanceled), true);
_target.AddHandler(UIElement.PointerCaptureLostEvent, new PointerEventHandler(OnPointerCaptureLost), true);
_target.AddHandler(UIElement.PointerReleasedEvent, new PointerEventHandler(OnPointerReleased), true);
_target.AddHandler(UIElement.PointerExitedEvent, new PointerEventHandler(OnPointerExited), true);
_target.AddHandler(UIElement.PointerMovedEvent, new PointerEventHandler(OnPointerMoved), true);
_target.AddHandler(UIElement.PointerPressedEvent, new PointerEventHandler(OnPointerPressed), true);
_target.AddHandler(UIElement.PointerWheelChangedEvent, new PointerEventHandler(OnPointerWheelChanged), true);
// Create the gesture recognizer
_gestureRecognizer = new Windows.UI.Input.GestureRecognizer();
_gestureRecognizer.GestureSettings = Windows.UI.Input.GestureSettings.None;
}
