Update CameraControl.cs

Small optimization when calculating controller status

src/Camera.App/Core/CameraControl.cs

@@ -39,6 +39,7 @@ public class CameraControl : Controls.Control
  /* height in xaml is zero, gets animated up when mouse within activation zone */
  private const double ControllerHeight = 75.0;
  private const double ControllerActivationY = ControllerHeight + 10.0;
+ private double controllerActivationX;
  private bool isControllerEnabled;
 
  private double imageScaledWidth;
@@ -742,13 +743,21 @@ public double ControllerWidth
 
  private static readonly DependencyPropertyKey ControllerWidthPropertyKey = DependencyProperty.RegisterReadOnly
  (
- nameof(ControllerWidth), typeof(double), typeof(CameraControl), new PropertyMetadata(0.0)
+ nameof(ControllerWidth), typeof(double), typeof(CameraControl), new PropertyMetadata(0.0, OnControllerWidthChanged)
  );
 
  /// <summary>
  /// Identifies the <see cref="ControllerWidth"/> dependency property.
  /// </summary>
  public static readonly DependencyProperty ControllerWidthProperty = ControllerWidthPropertyKey.DependencyProperty;
+
+ private static void OnControllerWidthChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+ {
+ if (d is CameraControl control)
+ {
+ control.controllerActivationX = (double)e.NewValue + 10.0;
+ }
+ }
  #endregion
 
  /************************************************************************/
@@ -862,14 +871,14 @@ protected override void OnMouseMove(MouseEventArgs e)
 
  Point point = e.GetPosition(this);
 
- if (controllerStatus == ControllerStatus.Hidden && point.Y > ActualHeight - ControllerActivationY && point.X < ControllerWidth + 10.0)
+ if (controllerStatus == ControllerStatus.Hidden && point.Y > ActualHeight - ControllerActivationY && point.X < controllerActivationX)
  {
  controllerStatus = ControllerStatus.Showing;
  ShowController.Begin();
  return;
  }
 
- if (controllerStatus == ControllerStatus.Shown && (point.Y < ActualHeight - ControllerActivationY || point.X > ControllerWidth + 10.0))
+ if (controllerStatus == ControllerStatus.Shown && (point.Y < ActualHeight - ControllerActivationY || point.X > controllerActivationX))
  {
  controllerStatus = ControllerStatus.Hiding;
  HideController.Begin();