internal PointerStylusDevice(PointerTabletDevice tabletDevice, UnsafeNativeMethods.POINTER_DEVICE_CURSOR_INFO cursorInfo)
{
_cursorInfo = cursorInfo;
_tabletDevice = tabletDevice;
_pointerLogic = StylusLogic.GetCurrentStylusLogicAs <PointerLogic>();
// Touch devices have a special set of handling code
if (tabletDevice.Type == TabletDeviceType.Touch)
{
TouchDevice = new PointerTouchDevice(this);
}
_interactionEngine = new PointerInteractionEngine(this);
_interactionEngine.InteractionDetected += HandleInteraction;
List <StylusButton> buttons = new List <StylusButton>();
// Create a button collection for this StylusDevice based off the button properties stored in the tablet
// This needs to be done as each button instance has a StylusDevice owner that it uses to access the raw
// data in the StylusDevice.
foreach (var prop in _tabletDevice.DeviceInfo.StylusPointProperties)
{
if (prop.IsButton)
{
StylusButton button = new StylusButton(StylusPointPropertyIds.GetStringRepresentation(prop.Id), prop.Id);
button.SetOwner(this);
buttons.Add(button);
}
}
_stylusButtons = new StylusButtonCollection(buttons);
}
/// <summary>
/// Verifies that the call to the stylus plugin on the RTI thread was valid against the current visual tree.
/// If this verification fails, we will rebuild and resend the raw input and custom data in order to inform
/// the target collections of the error and fix it.
/// </summary>
/// <remarks>
/// This is a remnant of verifying hits to the collections based on the UI thread calling this
/// after the real time input thread has previously called a collection. This is due to the RTI thread
/// not being 100% synchronous with the visual tree in terms of hitting the collections. This is sort of
/// redundant right now, but needs to be here when we re-implement the RTI.
/// </remarks>
internal void VerifyStylusPlugInCollectionTarget(RawStylusInputReport rawStylusInputReport)
{
switch (rawStylusInputReport.Actions)
{
case RawStylusActions.Down:
case RawStylusActions.Move:
case RawStylusActions.Up:
break;
default:
return; // do nothing if not Down, Move or Up.
}
PointerLogic pointerLogic = StylusLogic.GetCurrentStylusLogicAs <PointerLogic>();
RawStylusInput originalRSI = rawStylusInputReport.RawStylusInput;
// See if we have a plugin for the target of this input.
StylusPlugInCollection targetPIC = null;
StylusPlugInCollection targetRtiPIC = (originalRSI != null) ? originalRSI.Target : null;
bool updateEventPoints = false;
// Make sure we use UIElement for target if non NULL and hit ContentElement.
UIElement newTarget = InputElement.GetContainingUIElement(rawStylusInputReport.StylusDevice.DirectlyOver as DependencyObject) as UIElement;
if (newTarget != null)
{
targetPIC = FindPlugInCollection(newTarget);
}
// Make sure any lock() calls do not reenter on us.
using (Dispatcher.CurrentDispatcher.DisableProcessing())
{
// See if we hit the wrong PlugInCollection on the pen thread and clean things up if we did.
if (targetRtiPIC != null && targetRtiPIC != targetPIC && originalRSI != null)
{
// Fire custom data not confirmed events for both pre and post since bad target...
foreach (RawStylusInputCustomData customData in originalRSI.CustomDataList)
{
customData.Owner.FireCustomData(customData.Data, rawStylusInputReport.Actions, false);
}
updateEventPoints = originalRSI.StylusPointsModified;
// Clear RawStylusInput data.
rawStylusInputReport.RawStylusInput = null;
}
// See if we need to build up an RSI to send to the plugincollection (due to a mistarget).
bool sendRawStylusInput = false;
if (targetPIC != null && rawStylusInputReport.RawStylusInput == null)
{
// NOTE: (This applies when RTI is back in) Info will not change (it gets rebuilt instead so keeping ref is fine)
// The transformTabletToView matrix and plugincollection rects though can change based
// off of layout events which is why we need to lock this.
GeneralTransformGroup transformTabletToView = new GeneralTransformGroup();
transformTabletToView.Children.Add(rawStylusInputReport.StylusDevice.As <PointerStylusDevice>().GetTabletToElementTransform(null)); // this gives matrix in measured units (not device)
transformTabletToView.Children.Add(targetPIC.ViewToElement); // Make it relative to the element.
transformTabletToView.Freeze(); // Must be frozen for multi-threaded access.
RawStylusInput rawStylusInput = new RawStylusInput(rawStylusInputReport, transformTabletToView, targetPIC);
rawStylusInputReport.RawStylusInput = rawStylusInput;
sendRawStylusInput = true;
}
PointerStylusDevice stylusDevice = rawStylusInputReport.StylusDevice.As <PointerStylusDevice>();
// Now fire the confirmed enter/leave events as necessary.
StylusPlugInCollection currentTarget = stylusDevice.CurrentVerifiedTarget;
if (targetPIC != currentTarget)
{
if (currentTarget != null)
{
// Fire leave event. If we never had a plugin for this event then create a temp one.
if (originalRSI == null)
{
GeneralTransformGroup transformTabletToView = new GeneralTransformGroup();
transformTabletToView.Children.Add(stylusDevice.GetTabletToElementTransform(null)); // this gives matrix in measured units (not device)
transformTabletToView.Children.Add(currentTarget.ViewToElement); // Make it relative to the element.
transformTabletToView.Freeze(); // Must be frozen for multi-threaded access.
originalRSI = new RawStylusInput(rawStylusInputReport, transformTabletToView, currentTarget);
}
currentTarget.FireEnterLeave(false, originalRSI, true);
}
if (targetPIC != null)
{
// Fire Enter event
targetPIC.FireEnterLeave(true, rawStylusInputReport.RawStylusInput, true);
// Indicate we've used a stylus plugin
pointerLogic.Statistics.FeaturesUsed |= Tracing.StylusTraceLogger.FeatureFlags.StylusPluginsUsed;
}
// Update the verified target.
stylusDevice.CurrentVerifiedTarget = targetPIC;
}
// Now fire RawStylusInput if needed to the right plugincollection.
if (sendRawStylusInput)
{
// We are on the pen thread, just call directly.
targetPIC.FireRawStylusInput(rawStylusInputReport.RawStylusInput);
updateEventPoints = (updateEventPoints || rawStylusInputReport.RawStylusInput.StylusPointsModified);
// Indicate we've used a stylus plugin
pointerLogic.Statistics.FeaturesUsed |= Tracing.StylusTraceLogger.FeatureFlags.StylusPluginsUsed;
}
// Now fire PrePreviewCustomData events.
if (targetPIC != null)
{
// Send custom data pre event
foreach (RawStylusInputCustomData customData in rawStylusInputReport.RawStylusInput.CustomDataList)
{
customData.Owner.FireCustomData(customData.Data, rawStylusInputReport.Actions, true);
}
}
// VerifyRawTarget might resend to correct plugins or may have hit the wrong plugincollection. The StylusPackets
// may be overriden in those plugins so we need to call UpdateEventStylusPoints to update things.
if (updateEventPoints)
{
rawStylusInputReport.StylusDevice.As <PointerStylusDevice>().UpdateEventStylusPoints(rawStylusInputReport, true);
}
}
}
