didStopTrackingLastPointer method

Implementation

@override
void didStopTrackingLastPointer(int pointer) {
  switch (_dragState) {
    case _DragState.ready:
      _checkCancel();
      resolve(GestureDisposition.rejected);

    case _DragState.possible:
      if (_pastSlopTolerance) {
        // This means the pointer was not accepted as a tap.
        if (_wonArenaForPrimaryPointer) {
          // If the recognizer has already won the arena for the primary pointer being tracked
          // but the pointer has exceeded the tap tolerance, then the pointer is accepted as a
          // drag gesture.
          if (currentDown != null) {
            if (!_acceptedActivePointers.remove(pointer)) {
              resolvePointer(pointer, GestureDisposition.rejected);
            }
            _dragState = _DragState.accepted;
            _acceptDrag(currentDown!);
            _checkDragEnd();
          }
        } else {
          _checkCancel();
          resolve(GestureDisposition.rejected);
        }
      } else {
        // The pointer is accepted as a tap.
        if (currentUp != null) {
          _checkTapUp(currentUp!);
        }
      }

    case _DragState.accepted:
      // For the case when the pointer has been accepted as a drag.
      // Meaning [_checkTapDown] and [_checkDragStart] have already ran.
      _checkDragEnd();
  }

  _stopDeadlineTimer();
  _start = null;
  _dragState = _DragState.ready;
  _pastSlopTolerance = false;
}