internal void Update(HwndPointerInputProvider provider, PresentationSource inputSource,
PointerData pointerData, RawStylusInputReport rsir)
{
_lastEventTimeTicks = Environment.TickCount;
_inputSource = new SecurityCriticalDataClass <PresentationSource>(inputSource);
_pointerData = pointerData;
// First get the initial stylus points. Raw data from pointer input comes in screen coordinates, keep that here since that is what we expect.
_currentStylusPoints = new StylusPointCollection(rsir.StylusPointDescription, rsir.GetRawPacketData(), GetTabletToElementTransform(null), Matrix.Identity);
// If a plugin has modified these points, we need to fixup the points with the new input
if (rsir?.RawStylusInput?.StylusPointsModified ?? false)
{
// Note that RawStylusInput.Target (of type StylusPluginCollection)
// guarantees that ViewToElement is invertible.
GeneralTransform transformToElement = rsir.RawStylusInput.Target.ViewToElement.Inverse;
Debug.Assert(transformToElement != null);
_currentStylusPoints = rsir.RawStylusInput.GetStylusPoints(transformToElement);
}
// Store the current hwnd provider so we know for what hwnd we are processing this message
CurrentPointerProvider = provider;
if (PointerTabletDevice.Type == TabletDeviceType.Touch)
{
// If we are a touch device, sync the ActiveSource
TouchDevice.ChangeActiveSource(_inputSource.Value);
}
}
