/// <summary>
/// Processes the machine update for controls which weren't seen with the current (latest) point.
/// </summary>
/// <param name="control">The control (which was not seen).</param>
/// <param name="data">The view-model for the control.</param>
/// <param name="window">The window where the control is located.</param>
/// <exception cref="ArgumentOutOfRangeException">
/// Thrown if the control is in an unexpected state (e.g. infrastructure created a new state and a module considers it,
/// but this module has not been updated).
/// </exception>
private void StateMachineUpdateForOtherControls(
SelectableControl control,
ISelectableControlViewModel data,
Window window)
{
switch (data.State)
{
case SelectableState.Idle:
break;
case SelectableState.SeenButWaiting:
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
}
break;
case SelectableState.AnimationRunning:
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
window.Dispatcher.Invoke(control.StopAnimation);
}
else
{
data.State = SelectableState.AnimationOnHold;
window.Dispatcher.Invoke(control.PauseAnimation);
}
break;
case SelectableState.AnimationOnHold:
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
window.Dispatcher.Invoke(control.StopAnimation);
}
break;
case SelectableState.RecentlySelected:
if (data.CurrentGazeTimeSpan >= data.GazeTimeSpanBeforeCooldown)
{
data.CurrentGazeTimeSpan = TimeSpan.Zero;
}
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public static Rect GetSelectedArea()
{
SelectableControl sel = GetSelection();
if (sel == null)
{
return(new Rect(0, 0, 0, 0));
}
return(GetSelection().area);
}
public static string GetSelectedName()
{
SelectableControl sel = GetSelection();
if (sel == null)
{
return("");
}
return(GetSelection().name);
}
/// <summary>
/// Resets the current selection and sets the <see cref="SelectableControl"/> at <see cref="Vector2.Zero"/> to be selected.
/// </summary>
protected void ResetSelection()
{
GetMenu.Controls.FindControl(Vector2.Zero).BorderStyle(BorderArea.Horizontal, '~');
if (OiskiEngine.Input.GetSelectedIndex != Vector2.Zero)
{
SelectableControl control = GetMenu.Controls.FindControl(OiskiEngine.Input.GetSelectedIndex);
control.BorderStyle(BorderArea.Horizontal, '-');
}
OiskiEngine.Input.ResetSlection();
}
/// <summary>
/// Finds the selectable control on which a gaze-point falls and populates a field in the class.
/// </summary>
/// <param name="result">The result.</param>
/// <returns>
/// <see cref="HitTestResultBehavior.Stop" /> as soon as the first <see cref="SelectableControl" /> under the point is
/// found. Otherwise it returns <see cref="HitTestResultBehavior.Continue" />.
/// </returns>
public static HitTestResultBehavior FindSelectableControlSeen(HitTestResult result)
{
var visualHit = result.VisualHit;
while ((visualHit != null) && !(visualHit is SelectableControl))
{
visualHit = VisualTreeHelper.GetParent(visualHit);
}
if (visualHit == null)
{
return(HitTestResultBehavior.Continue);
}
_selectableControlSeen = visualHit as SelectableControl;
return(HitTestResultBehavior.Stop);
}
/// <summary>
/// Finds the <see cref="SelectableControl"/> under the given <see cref="Point"/> in the given <see cref="Window"/>.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="window">The window.</param>
/// <returns>The <see cref="SelectableControl"/> under the point.</returns>
public static SelectableControl SelectableControlUnderPoint(Point point, Window window)
{
_selectableControlSeen = null;
window.Dispatcher.Invoke(
() =>
{
if (PresentationSource.FromVisual(window) == null)
{
return;
}
var pt = window.PointFromScreen(point);
VisualTreeHelper.HitTest(
window,
null,
FindSelectableControlSeen,
new PointHitTestParameters(pt));
});
return(_selectableControlSeen);
}
/// <summary>
/// Processes the machine update for the control which was seen with the current (latest) point.
/// </summary>
/// <param name="seenControl">The control which was seen.</param>
/// <param name="data">The view-model for the control.</param>
/// <param name="window">The window where the control is located.</param>
/// <exception cref="ArgumentOutOfRangeException">
/// Thrown if the control is in an unexpected state (e.g. infrastructure created a new state and a module considers it,
/// but this module has not been updated).
/// </exception>
private void StateMachineUpdateForSeenControl(
SelectableControl seenControl,
ISelectableControlViewModel data,
Window window)
{
bool isAlwaysSelectable = false;
window.Dispatcher.Invoke(() => isAlwaysSelectable = seenControl.IsAlwaysSelectable);
if (!data.IsSelectable &&
!isAlwaysSelectable)
{
return;
}
switch (data.State)
{
case SelectableState.Idle:
data.State = SelectableState.SeenButWaiting;
break;
case SelectableState.SeenButWaiting:
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
}
if (data.CurrentGazeTimeSpan >= data.GazeTimeSpanBeforeAnimationBegins)
{
window.Dispatcher.Invoke(seenControl.PlayAnimation);
data.State = SelectableState.AnimationRunning;
}
break;
case SelectableState.AnimationRunning:
if (data.CurrentGazeTimeSpan >= data.GazeTimeSpanBeforeSelectionOccurs)
{
window.Dispatcher.Invoke(seenControl.Select);
data.State = SelectableState.RecentlySelected;
}
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
window.Dispatcher.Invoke(seenControl.StopAnimation);
}
break;
case SelectableState.AnimationOnHold:
window.Dispatcher.Invoke(seenControl.ResumeAnimation);
data.State = SelectableState.AnimationRunning;
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
window.Dispatcher.Invoke(seenControl.StopAnimation);
}
break;
case SelectableState.RecentlySelected:
if (data.CurrentGazeTimeSpan >= data.GazeTimeSpanBeforeCooldown)
{
data.CurrentGazeTimeSpan = TimeSpan.Zero;
}
if (data.CurrentGazeTimeSpan == TimeSpan.Zero)
{
data.State = SelectableState.Idle;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public static void AddControl(SelectableControl c)
{
controls.Add(c);
}
public static void AddControl(SelectableControl c)
{
controls.Add(c);
}
