internal StagingAreaInputItem PushInput(InputEventArgs input, StagingAreaInputItem promote)
{
StagingAreaInputItem item = new StagingAreaInputItem(false);
item.Reset(input, promote);
return(PushInput(item));
}
/// <summary>
/// Pushes an input event onto the top of the staging area.
/// </summary>
/// <param name="input">
/// The input event to place on the staging area. This may not
/// be null, and may not already exist in the staging area.
/// </param>
/// <returns>
/// The specified staging area input item.
/// </returns>
public StagingAreaInputItem PushInput(StagingAreaInputItem input)
{
if (!_allowAccessToStagingArea)
{
throw new InvalidOperationException(SR.Get(SRID.NotAllowedToAccessStagingArea));
}
return(this.UnsecureInputManager.PushInput(input));
}
/// <summary>
/// Pushes an input event onto the top of the staging area.
/// </summary>
/// <param name="input">
/// The input event to place on the staging area. This may not
/// be null, and may not already exist in the staging area.
/// </param>
/// <param name="promote">
/// An existing staging area item to promote the state from.
/// </param>
/// <returns>
/// The staging area input item that wraps the specified input.
/// </returns>
public StagingAreaInputItem PushInput(InputEventArgs input,
StagingAreaInputItem promote) // Note: this should be a bool, and always use the InputItem available on these args.
{
if (!_allowAccessToStagingArea)
{
throw new InvalidOperationException(SR.Get(SRID.NotAllowedToAccessStagingArea));
}
return(this.UnsecureInputManager.PushInput(input, promote));
}
public StagingAreaInputItem PushInput(InputEventArgs input,
StagingAreaInputItem promote) // Note: this should be a bool, and always use the InputItem available on these args.
{
if(!_allowAccessToStagingArea)
{
throw new InvalidOperationException(SR.Get(SRID.NotAllowedToAccessStagingArea));
}
return this.UnsecureInputManager.PushInput(input, promote);
}
// For performace reasons, we try to reuse these event args.
// Allow an existing item to be promoted by keeping the existing dictionary.
internal void Reset(InputEventArgs input, StagingAreaInputItem promote)
{
_input = input;
if (promote != null && promote._dictionary != null)
{
_dictionary = (Hashtable)promote._dictionary.Clone();
}
else
{
if (_dictionary != null)
{
_dictionary.Clear();
}
else
{
_dictionary = new Hashtable();
}
}
}
// For performace reasons, we try to reuse these event args.
// Allow an existing item to be promoted by keeping the existing dictionary.
internal void Reset(InputEventArgs input, StagingAreaInputItem promote)
{
_input = input;
if(promote != null && promote._dictionary != null)
{
//
_dictionary = (Hashtable) promote._dictionary.Clone();
}
else
{
if(_dictionary != null)
{
_dictionary.Clear();
}
else
{
_dictionary = new Hashtable();
}
}
}
public bool ProcessInput(InputEventArgs input)
{
StagingAreaInputItem stagingItem = new StagingAreaInputItem(input);
PreProcessInputEventArgs preProcessArgs = new PreProcessInputEventArgs(this, stagingItem);
if (PreProcessInput != null)
{
PreProcessInput(this, preProcessArgs);
}
NotifyInputEventArgs notifyArgs = new NotifyInputEventArgs(this, stagingItem);
if (PreNotifyInput != null)
{
PreNotifyInput(this, notifyArgs);
}
#if notyet
if (!preProcessArgs.Canceled)
{
/* XXX route the event */;
}
#endif
if (PostNotifyInput != null)
{
PostNotifyInput(this, notifyArgs);
}
if (PostProcessInput != null)
{
ProcessInputEventArgs processArgs = new ProcessInputEventArgs(this, stagingItem);
PostProcessInput(this, processArgs);
}
return(true);
}
internal override void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_canceled = false;
base.Reset(input, inputManager);
}
internal StagingAreaInputItem PushMarker()
{
StagingAreaInputItem item = new StagingAreaInputItem(true);
return(PushInput(item));
}
internal StagingAreaInputItem PushInput(StagingAreaInputItem inputItem)
{
_stagingArea.Push(inputItem);
return(inputItem);
}
private bool IsPointerButtonEventItem(StagingAreaInputItem stagingItem)
{
return stagingItem != null && (stagingItem.Input as MouseButtonEventArgs != null || stagingItem.Input as StylusButtonEventArgs != null);
}
internal StagingAreaInputItem PushInput(InputEventArgs input, StagingAreaInputItem promote)
{
StagingAreaInputItem item = new StagingAreaInputItem(false);
item.Reset(input, promote);
return PushInput(item);
}
internal NotifyInputEventArgs (InputManager inputManager,
StagingAreaInputItem stagingItem)
{
this.inputManager = inputManager;
this.stagingItem = stagingItem;
}
public StagingAreaInputItem PushInput (StagingAreaInputItem input)
{
throw new NotImplementedException ();
}
internal ProcessInputEventArgs (InputManager inputManager,
StagingAreaInputItem stagingItem)
: base (inputManager, stagingItem)
{
}
internal NotifyInputEventArgs(InputManager inputManager,
StagingAreaInputItem stagingItem)
{
this.inputManager = inputManager;
this.stagingItem = stagingItem;
}
public StagingAreaInputItem PushInput(StagingAreaInputItem input)
{
return default(StagingAreaInputItem);
}
public StagingAreaInputItem PushInput(InputEventArgs input, StagingAreaInputItem promote)
{
return default(StagingAreaInputItem);
}
public bool ProcessInput (InputEventArgs input)
{
StagingAreaInputItem stagingItem = new StagingAreaInputItem (input);
PreProcessInputEventArgs preProcessArgs = new PreProcessInputEventArgs(this, stagingItem);
if (PreProcessInput != null)
PreProcessInput (this, preProcessArgs);
NotifyInputEventArgs notifyArgs = new NotifyInputEventArgs(this, stagingItem);
if (PreNotifyInput != null)
PreNotifyInput (this, notifyArgs);
#if notyet
if (!preProcessArgs.Canceled)
/* XXX route the event */;
#endif
if (PostNotifyInput != null)
PostNotifyInput (this, notifyArgs);
if (PostProcessInput != null) {
ProcessInputEventArgs processArgs = new ProcessInputEventArgs (this, stagingItem);
PostProcessInput (this, processArgs);
}
return true;
}
public StagingAreaInputItem PushInput(StagingAreaInputItem input)
{
if(!_allowAccessToStagingArea)
{
throw new InvalidOperationException(SR.Get(SRID.NotAllowedToAccessStagingArea));
}
return this.UnsecureInputManager.PushInput(input);
}
public StagingAreaInputItem PushInput (InputEventArgs input, StagingAreaInputItem promote)
{
throw new NotImplementedException ();
}
private void PromoteMainToMouse(StagingAreaInputItem stagingItem)
{
if(!stagingItem.Input.Handled)
{
StylusEventArgs stylusArgs = stagingItem.Input as StylusEventArgs;
if (stylusArgs != null)
{
StylusDevice stylusDevice = stylusArgs.StylusDevice;
// We only want to promote to mouse when we actually have real stylus input.
if (stylusDevice != null)
{
Debug.Assert(ShouldPromoteToMouse(stylusDevice) && stylusDevice.TouchDevice.PromotingToOther);
if (IgnoreGestureToMousePromotion(stylusArgs as StylusSystemGestureEventArgs, stylusDevice.TouchDevice))
{
return;
}
RawMouseActions actions = stylusDevice.GetMouseActionsFromStylusEventAndPlaybackCachedDown(stagingItem.Input.RoutedEvent, stylusArgs);
if (actions != RawMouseActions.None)
{
PresentationSource mouseInputSource = stylusDevice.GetMousePresentationSource();
if (mouseInputSource != null)
{
Point pt = PointUtil.ScreenToClient(stylusDevice.LastMouseScreenPoint, mouseInputSource);
//
// use the dispatcher as a way of coalescing mouse *move* messages
// BUT don't flood the dispatcher with delegates if we're already
// waiting for a callback
//
if ((actions & RawMouseActions.AbsoluteMove) != 0)
{
if (actions == _lastRawMouseAction && _waitingForDelegate)
{
return; // We don't need to process this one.
}
else
{
//set the waiting bit so we won't enter here again
//until we get the callback
_waitingForDelegate = true;
Dispatcher.BeginInvoke(DispatcherPriority.Input,
(DispatcherOperationCallback)delegate(object unused)
{
//reset our flags here in the callback.
_waitingForDelegate = false;
return null;
},
null);
}
}
// See if we need to set the Mouse Activate flag.
if (_inputManager.Value.PrimaryMouseDevice.CriticalActiveSource != mouseInputSource)
{
actions |= RawMouseActions.Activate;
}
_lastRawMouseAction = actions;
RawMouseInputReport mouseInputReport = new RawMouseInputReport(
InputMode.Foreground, stylusArgs.Timestamp, mouseInputSource,
actions, (int)pt.X, (int)pt.Y, 0, IntPtr.Zero);
InputReportEventArgs inputReportArgs = new InputReportEventArgs(stylusDevice, mouseInputReport);
inputReportArgs.RoutedEvent=InputManager.PreviewInputReportEvent;
_inputManager.Value.ProcessInput(inputReportArgs);
}
}
}
}
}
}
internal ProcessInputEventArgs(InputManager inputManager,
StagingAreaInputItem stagingItem)
: base(inputManager, stagingItem)
{
}
internal override void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_canceled = false;
base.Reset(input, inputManager);
}
public StagingAreaInputItem PushInput(StagingAreaInputItem input)
{
throw new NotImplementedException();
}
internal StagingAreaInputItem PushInput(StagingAreaInputItem inputItem)
{
_stagingArea.Push(inputItem);
return inputItem;
}
public StagingAreaInputItem PushInput(InputEventArgs input, StagingAreaInputItem promote)
{
throw new NotImplementedException();
}
internal StagingAreaInputItem PushMarker()
{
StagingAreaInputItem item = new StagingAreaInputItem(true);
return PushInput(item);
}
// Helper to access the StylusDevice property.
private StylusDevice GetStylusDevice(StagingAreaInputItem stagingItem)
{
return stagingItem.GetData(_tagStylusDevice) as StylusDevice;
}
internal virtual void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_input = input;
_inputManager = inputManager;
}
private void PromoteMainMoveToTouch(StylusDevice stylusDevice, StagingAreaInputItem stagingItem)
{
StylusTouchDevice touchDevice = stylusDevice.TouchDevice;
bool shouldPromoteToMouse = ShouldPromoteToMouse(stylusDevice);
if (touchDevice.IsActive)
{
if (!touchDevice.OnMove() && shouldPromoteToMouse)
{
if (touchDevice.PromotingToManipulation)
{
IList<StagingAreaInputItem> storedStagingItems = touchDevice.StoredStagingAreaItems;
int stagingItemCount = storedStagingItems.Count;
if (stagingItemCount > 0 &&
storedStagingItems[stagingItemCount - 1].Input.RoutedEvent == Stylus.StylusMoveEvent)
{
storedStagingItems[stagingItemCount - 1] = stagingItem;
}
else
{
touchDevice.StoredStagingAreaItems.Add(stagingItem);
}
}
else if (touchDevice.PromotingToOther)
{
PromoteMainToMouse(stagingItem);
}
}
}
else if (shouldPromoteToMouse)
{
PromoteMainToMouse(stagingItem);
}
}
private void PromoteMainDownToTouch(StylusDevice stylusDevice, StagingAreaInputItem stagingItem)
{
StylusTouchDevice touchDevice = stylusDevice.TouchDevice;
if (touchDevice.IsActive)
{
// Deactivate and end the previous cycle if already active
touchDevice.OnDeactivate();
}
touchDevice.OnActivate();
bool shouldPromoteToMouse = ShouldPromoteToMouse(stylusDevice);
if (!touchDevice.OnDown() && shouldPromoteToMouse)
{
if (touchDevice.PromotingToManipulation)
{
touchDevice.StoredStagingAreaItems.Add(stagingItem);
}
else if (touchDevice.PromotingToOther)
{
PromoteMainToMouse(stagingItem);
}
}
}
internal virtual void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_input = input;
_inputManager = inputManager;
}
private bool ProcessStagingArea()
{
bool handled = false;
// For performance reasons, try to reuse the input event args.
// If we are reentrered, we have to start over with fresh event
// args, so we clear the member variables before continuing.
// Also, we cannot simply make an single instance of the
// PreProcessedInputEventArgs and cast it to NotifyInputEventArgs
// or ProcessInputEventArgs because a malicious user could upcast
// the object and call inappropriate methods.
NotifyInputEventArgs notifyInputEventArgs = (_notifyInputEventArgs != null) ? _notifyInputEventArgs : new NotifyInputEventArgs();
ProcessInputEventArgs processInputEventArgs = (_processInputEventArgs != null) ? _processInputEventArgs : new ProcessInputEventArgs();
PreProcessInputEventArgs preProcessInputEventArgs = (_preProcessInputEventArgs != null) ? _preProcessInputEventArgs : new PreProcessInputEventArgs();
_notifyInputEventArgs = null;
_processInputEventArgs = null;
_preProcessInputEventArgs = null;
// Because we can be reentered, we can't just enumerate over the
// staging area - that could throw an exception if the queue
// changes underneath us. Instead, just loop until we find a
// frame marker or until the staging area is empty.
StagingAreaInputItem item = null;
while ((item = PopInput()) != null)
{
// If we found a marker, we have reached the end of a
// "section" of the staging area. We just return from
// the synchronous processing of the staging area.
// If a dispatcher frame has been pushed by someone, this
// will not return to the original ProcessInput. Instead
// it will unwind to the dispatcher and since we have
// already pushed a work item to continue processing the
// input, it will simply call back into us to do more
// processing. At which point we will continue to drain
// the staging area. This could cause strage behavior,
// but it is deemed more acceptable than stalling input
// processing.
// In the future, in ordre to
// make sure we all agree on this. We could also
// just delay the rest of the staging area until
// the dispatcher frame finishes. Unfortunately,
// this means one could receive an input event for
// something that happened a long time ago.
if (item.IsMarker)
{
break;
}
// Pre-Process the input. This could modify the staging
// area, and it could cancel the processing of this
// input event.
//
// Because we use multi-cast delegates, we always have to
// create a new multi-cast delegate when we add or remove
// a handler. This means we can just call the current
// multi-cast delegate instance, and it is safe to iterate
// over, even if we get reentered.
if (_preProcessInput != null)
{
preProcessInputEventArgs.Reset(item, this);
// Invoke the handlers in reverse order so that handlers that
// users add are invoked before handlers in the system.
Delegate[] handlers = _preProcessInput.GetInvocationList();
for (int i = (handlers.Length - 1); i >= 0; i--)
{
PreProcessInputEventHandler handler = (PreProcessInputEventHandler)handlers[i];
handler(this, preProcessInputEventArgs);
}
}
if (!preProcessInputEventArgs.Canceled)
{
// Pre-Notify the input.
//
// Because we use multi-cast delegates, we always have to
// create a new multi-cast delegate when we add or remove
// a handler. This means we can just call the current
// multi-cast delegate instance, and it is safe to iterate
// over, even if we get reentered.
if (_preNotifyInput != null)
{
notifyInputEventArgs.Reset(item, this);
// Invoke the handlers in reverse order so that handlers that
// users add are invoked before handlers in the system.
Delegate[] handlers = _preNotifyInput.GetInvocationList();
for (int i = (handlers.Length - 1); i >= 0; i--)
{
NotifyInputEventHandler handler = (NotifyInputEventHandler)handlers[i];
handler(this, notifyInputEventArgs);
}
}
// Raise the input event being processed.
InputEventArgs input = item.Input;
// Some input events are explicitly associated with
// an element. Those that are not are associated with
// the target of the input device for this event.
DependencyObject eventSource = input.Source as DependencyObject;
if (eventSource == null || !InputElement.IsValid(eventSource as IInputElement))
{
if (input.Device != null)
{
eventSource = input.Device.Target as DependencyObject;
}
}
// During synchronized input processing, event should be discarded if not listening for this input type.
if (_isSynchronizedInput &&
SynchronizedInputHelper.IsMappedEvent(input) &&
Array.IndexOf(SynchronizedInputEvents, input.RoutedEvent) < 0 &&
Array.IndexOf(PairedSynchronizedInputEvents, input.RoutedEvent) < 0)
{
if (!SynchronizedInputHelper.ShouldContinueListening(input))
{
// Discard the event
_synchronizedInputState = SynchronizedInputStates.Discarded;
SynchronizedInputHelper.RaiseAutomationEvents();
CancelSynchronizedInput();
}
else
{
_synchronizedInputAsyncClearOperation = Dispatcher.BeginInvoke((Action) delegate
{
// Discard the event
_synchronizedInputState = SynchronizedInputStates.Discarded;
SynchronizedInputHelper.RaiseAutomationEvents();
CancelSynchronizedInput();
},
DispatcherPriority.Background);
}
}
else
{
if (eventSource != null)
{
if (InputElement.IsUIElement(eventSource))
{
UIElement e = (UIElement)eventSource;
e.RaiseEvent(input, true); // Call the "trusted" flavor of RaiseEvent.
}
else if (InputElement.IsContentElement(eventSource))
{
ContentElement ce = (ContentElement)eventSource;
ce.RaiseEvent(input, true);// Call the "trusted" flavor of RaiseEvent.
}
else if (InputElement.IsUIElement3D(eventSource))
{
UIElement3D e3D = (UIElement3D)eventSource;
e3D.RaiseEvent(input, true); // Call the "trusted" flavor of RaiseEvent
}
// If synchronized input raise appropriate automation event.
if (_isSynchronizedInput && SynchronizedInputHelper.IsListening(_listeningElement, input))
{
if (!SynchronizedInputHelper.ShouldContinueListening(input))
{
SynchronizedInputHelper.RaiseAutomationEvents();
CancelSynchronizedInput();
}
else
{
_synchronizedInputAsyncClearOperation = Dispatcher.BeginInvoke((Action) delegate
{
SynchronizedInputHelper.RaiseAutomationEvents();
CancelSynchronizedInput();
},
DispatcherPriority.Background);
}
}
}
}
// Post-Notify the input.
//
// Because we use multi-cast delegates, we always have to
// create a new multi-cast delegate when we add or remove
// a handler. This means we can just call the current
// multi-cast delegate instance, and it is safe to iterate
// over, even if we get reentered.
if (_postNotifyInput != null)
{
notifyInputEventArgs.Reset(item, this);
// Invoke the handlers in reverse order so that handlers that
// users add are invoked before handlers in the system.
Delegate[] handlers = _postNotifyInput.GetInvocationList();
for (int i = (handlers.Length - 1); i >= 0; i--)
{
NotifyInputEventHandler handler = (NotifyInputEventHandler)handlers[i];
handler(this, notifyInputEventArgs);
}
}
// Post-Process the input. This could modify the staging
// area.
//
// Because we use multi-cast delegates, we always have to
// create a new multi-cast delegate when we add or remove
// a handler. This means we can just call the current
// multi-cast delegate instance, and it is safe to iterate
// over, even if we get reentered.
if (_postProcessInput != null)
{
processInputEventArgs.Reset(item, this);
RaiseProcessInputEventHandlers(_postProcessInput, processInputEventArgs);
// PreviewInputReport --> InputReport
if (item.Input.RoutedEvent == InputManager.PreviewInputReportEvent)
{
if (!item.Input.Handled)
{
InputReportEventArgs previewInputReport = (InputReportEventArgs)item.Input;
InputReportEventArgs inputReport = new InputReportEventArgs(previewInputReport.Device, previewInputReport.Report);
inputReport.RoutedEvent = InputManager.InputReportEvent;
PushInput(inputReport, item);
}
}
}
if (input.Handled)
{
handled = true;
}
}
}
// Store our input event args so that we can use them again, and
// avoid having to allocate more.
_notifyInputEventArgs = notifyInputEventArgs;
_processInputEventArgs = processInputEventArgs;
_preProcessInputEventArgs = preProcessInputEventArgs;
// Make sure to throw away the contents of the event args so
// we don't keep refs around to things we don't mean to.
_notifyInputEventArgs.Reset(null, null);
_processInputEventArgs.Reset(null, null);
_preProcessInputEventArgs.Reset(null, null);
return(handled);
}
public StagingAreaInputItem PushInput(InputEventArgs input, StagingAreaInputItem promote)
{
return(default(StagingAreaInputItem));
}
internal override void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_allowAccessToStagingArea = true;
base.Reset(input, inputManager);
}
public StagingAreaInputItem PushInput(StagingAreaInputItem input)
{
return(default(StagingAreaInputItem));
}
internal override void Reset(StagingAreaInputItem input, InputManager inputManager)
{
_allowAccessToStagingArea = true;
base.Reset(input, inputManager);
}
private void PromoteMainUpToTouch(StylusDevice stylusDevice, StagingAreaInputItem stagingItem)
{
StylusTouchDevice touchDevice = stylusDevice.TouchDevice;
bool shouldPromoteToMouse = ShouldPromoteToMouse(stylusDevice);
if (touchDevice.IsActive)
{
touchDevice.OnUp();
// Promote Up to Mouse if mouse left/right button is
// pressed, even if TouchUp event is handled. This is such
// that we dont leave mouse in an inconsistent pressed state.
if (shouldPromoteToMouse && touchDevice.PromotingToOther &&
(_mouseLeftButtonState == MouseButtonState.Pressed ||
_mouseRightButtonState == MouseButtonState.Pressed))
{
PromoteMainToMouse(stagingItem);
}
// PromoteMainToMouse is an outbound call that may have pumped messages.
// Since the world may have changed, verify that the device is still active.
if (touchDevice.IsActive)
{
touchDevice.OnDeactivate();
}
}
else if (shouldPromoteToMouse)
{
PromoteMainToMouse(stagingItem);
}
}
