/// <summary>
/// Registers the given view on this thread.
/// </summary>
internal void RegisterView(IInputEnabledView view)
{
view.EnsureNotNull(nameof(view));
_commandQueue.Enqueue(() =>
{
var inputHandlers = InputHandlerFactory.CreateInputHandlersForView(view);
if (inputHandlers == null)
{
return;
}
if (inputHandlers.Count == 0)
{
return;
}
// Deregister old input handlers if necessary
if (_viewInputHandlers.ContainsKey(view))
{
var oldList = _viewInputHandlers[view];
foreach (var actOldInputHandler in oldList)
{
actOldInputHandler.Stop();
}
_viewInputHandlers.Remove(view);
}
// Register new ones
_viewInputHandlers[view] = inputHandlers;
foreach (var actInputHandler in inputHandlers)
{
actInputHandler.Start(view);
}
});
}
protected override void OnTick(EventArgs eArgs)
{
base.OnTick(eArgs);
if (!GraphicsCore.IsLoaded)
{
return;
}
// Query for all input handlers on first tick
if (_globalInputHandlers == null)
{
_globalInputHandlers = InputHandlerFactory.CreateInputHandlersForGlobal() ?? new List <IInputHandler>(0);
foreach (var actInputHandler in _globalInputHandlers)
{
actInputHandler.Start(null);
}
}
// Execute all commands within the command queue
if (_commandQueue.Count > 0)
{
var prevCount = _commandQueue.Count;
var actIndex = 0;
while (actIndex < prevCount &&
_commandQueue.TryDequeue(out var actCommand))
{
actCommand();
actIndex++;
}
}
// Gather all input data
var expectedStateCount = _lastInputFrame?.CountStates ?? 6;
// Create new InputFrame object or reuse an old one
if (_recoveredInputFrames.TryDequeue(out var newInputFrame))
{
newInputFrame.Reset(expectedStateCount, s_singleFrameDuration);
}
else
{
newInputFrame = new InputFrame(expectedStateCount, s_singleFrameDuration);
}
// Gather all input states (without dependency to a view)
foreach (var actInputHandler in _globalInputHandlers)
{
actInputHandler.GetInputStates(_cachedStates);
for (var loop = 0; loop < _cachedStates.Count; loop++)
{
var actInputState = _cachedStates[loop];
if (actInputState == null)
{
continue;
}
newInputFrame.AddCopyOfState(actInputState, null);
}
_cachedStates.Clear();
}
// Gather all input states (with view dependency)
foreach (var actViewSpecificHandlers in _viewInputHandlers)
{
var renderLoop = actViewSpecificHandlers.Key.RenderLoop;
foreach (var actInputHandler in actViewSpecificHandlers.Value)
{
actInputHandler.GetInputStates(_cachedStates);
for (var loop = 0; loop < _cachedStates.Count; loop++)
{
var actInputState = _cachedStates[loop];
if (actInputState == null)
{
continue;
}
newInputFrame.AddCopyOfState(actInputState, renderLoop.ViewInformation);
}
_cachedStates.Clear();
}
}
// Store the generated InputFrame
_lastInputFrame = newInputFrame;
_gatheredInputFrames.Enqueue(newInputFrame);
// Ensure that we hold input frames for a maximum time range of a second
// (older input is obsolete)
while (_gatheredInputFrames.Count > SeeingSharpConstants.INPUT_FRAMES_PER_SECOND)
{
_gatheredInputFrames.TryDequeue(out _);
}
}
