/// <summary>
/// Constructor taking a base implementation
/// </summary>
/// <param name="impl">The base of the internal hierarchy</param>
internal StylusDevice(StylusDeviceBase impl)
{
if (impl == null)
{
throw new ArgumentNullException(nameof(impl));
}
StylusDeviceImpl = impl;
}
internal StylusTouchDeviceBase(StylusDeviceBase stylusDevice)
: base(stylusDevice.Id)
{
StylusDevice = stylusDevice;
// DevDiv:652804
// This used to be statically defined, but this gave rise to issues with
// calling GetIntermediateTouchPoints as the properties were likely to not
// match the hardware. Now, we set this from the actual tablet queried
// description so we can be assured they match save for when there is an
// actual erroneous situation.
_stylusPointDescription = StylusDevice?.TabletDevice?.TabletDeviceImpl?.StylusPointDescription ?? _stylusPointDescription;
PromotingToOther = true;
}
protected bool ValidateVisualForCapture(DependencyObject visual, StylusDeviceBase currentStylusDevice)
{
if (visual == null)
{
return(false);
}
PresentationSource presentationSource = PresentationSource.CriticalFromVisual(visual);
if (presentationSource == null)
{
return(false);
}
if (currentStylusDevice != null &&
currentStylusDevice.CriticalActiveSource != presentationSource &&
currentStylusDevice.Captured == null)
{
return(false);
}
return(true);
}
/// <summary> /// Updates the stylus capture for the particular stylus device /// </summary> /// <param name="stylusDevice"></param> /// <param name="oldStylusDeviceCapture"></param> /// <param name="newStylusDeviceCapture"></param> /// <param name="timestamp"></param> internal abstract void UpdateStylusCapture(StylusDeviceBase stylusDevice, IInputElement oldStylusDeviceCapture, IInputElement newStylusDeviceCapture, int timestamp);
/// <summary> /// Changes the over property of the given StylusDevice /// </summary> /// <param name="stylusDevice"></param> /// <param name="newOver"></param> internal abstract void UpdateOverProperty(StylusDeviceBase stylusDevice, IInputElement newOver);
internal void AddStylusDevice(int index, StylusDeviceBase stylusDevice)
{
base.Items.Insert(index, stylusDevice.StylusDevice); // add it to our list.
}
/////////////////////////////////////////////////////////////////////
///
internal void SetOwner(StylusDeviceBase stylusDevice)
{
_stylusDevice = stylusDevice;
}