bool System.IEquatable <System.Windows.Input.TouchPoint> .Equals(System.Windows.Input.TouchPoint other)
{
return(default(bool));
}
/// <summary>Raises a <see cref="ReceivedTouch"/> event for the given touch data.</summary>
/// <param name="point">Touch data to be passed into the event. Will be ignored if set to null.</param>
/// <param name="timestamp">The date and time when the touch occurred.</param>
private void RaiseReceivedTouchEventUsing(System.Windows.Input.TouchPoint point, DateTimeOffset timestamp)
{
// Validate.
if (point == null)
{
return;
}
// Fetch the pointer/finger's unique integer ID.
int pointerId = (point.TouchDevice != null) ? point.TouchDevice.Id : 0;
// Fetch the touch phase.
Corona.WinRT.Interop.Input.TouchPhase phase;
switch (point.Action)
{
case System.Windows.Input.TouchAction.Move:
phase = Corona.WinRT.Interop.Input.TouchPhase.Moved;
break;
case System.Windows.Input.TouchAction.Up:
phase = Corona.WinRT.Interop.Input.TouchPhase.Ended;
break;
case System.Windows.Input.TouchAction.Down:
default:
phase = Corona.WinRT.Interop.Input.TouchPhase.Began;
break;
}
// If a touch point began outside of the control, then ignore all of its "moved" and "ended" events.
if ((phase != Corona.WinRT.Interop.Input.TouchPhase.Began) &&
(fLastHandledTouchPoints.ContainsKey(pointerId) == false))
{
return;
}
// Determine if the touch point is within the UI control's bounds.
bool isWithinBounds = true;
if (point.TouchDevice.DirectlyOver != fUIEventSource)
{
// One last special check.
// If we're providing input event for a page, then allow touch event for a fullscreen background grid control.
var page = fUIEventSource as Microsoft.Phone.Controls.PhoneApplicationPage;
var backgroundGrid = point.TouchDevice.DirectlyOver as System.Windows.Controls.DrawingSurfaceBackgroundGrid;
if ((page == null) || (backgroundGrid == null))
{
isWithinBounds = false;
}
}
// Handle touch points outside of the UI control's bounds.
if (isWithinBounds == false)
{
if ((phase == Corona.WinRT.Interop.Input.TouchPhase.Ended) ||
(phase == Corona.WinRT.Interop.Input.TouchPhase.Canceled))
{
// The touch action has ended. Use the last valid point received within the UI control's bounds.
fLastHandledTouchPoints.TryGetValue(pointerId, out point);
}
else
{
// Ignore touch moves that happened outside of the UI control.
return;
}
}
// Update our collection of last received touch points within the UI control's bounds.
if ((phase == Corona.WinRT.Interop.Input.TouchPhase.Ended) ||
(phase == Corona.WinRT.Interop.Input.TouchPhase.Canceled))
{
fLastHandledTouchPoints.Remove(pointerId);
}
else
{
fLastHandledTouchPoints[pointerId] = point;
}
// Fetch the event table.
var eventTokenTable = ReceivedTouchEventTokenTable.GetOrCreateEventRegistrationTokenTable(
ref fReceivedTouchEventTokenTable).InvocationList;
if (eventTokenTable == null)
{
return;
}
// Convert the touch coordinates to pixels.
double scaleFactor = (double)System.Windows.Application.Current.Host.Content.ScaleFactor / 100.0;
double pixelPointX = Math.Round(point.Position.X * scaleFactor, MidpointRounding.AwayFromZero);
double pixelPointY = Math.Round(point.Position.Y * scaleFactor, MidpointRounding.AwayFromZero);
// Store the touch coordinate and timestamp to Corona's touch point type.
Corona.WinRT.Interop.Input.TouchPoint coronaTouchPoint;
coronaTouchPoint.X = pixelPointX;
coronaTouchPoint.Y = pixelPointY;
coronaTouchPoint.Timestamp = timestamp;
// Raise a "ReceivedTouch" event.
var eventArgs = new Corona.WinRT.Interop.Input.TouchEventArgs(pointerId, phase, coronaTouchPoint);
eventTokenTable(null, eventArgs);
}
