acceptGesture method Null safety
- int pointer
override
Called when this member wins the arena for the given pointer id.
Implementation
@override
void acceptGesture(int pointer) {
if (_state == _ScaleState.possible) {
_state = _ScaleState.started;
_dispatchOnStartCallbackIfNeeded();
if (dragStartBehavior == DragStartBehavior.start) {
_initialFocalPoint = _currentFocalPoint!;
_initialSpan = _currentSpan;
_initialLine = _currentLine;
_initialHorizontalSpan = _currentHorizontalSpan;
_initialVerticalSpan = _currentVerticalSpan;
if (_pointerPanZooms.isEmpty) {
_initialPanZoomScaleFactor = 1.0;
_initialPanZoomRotationFactor = 0.0;
} else {
_initialPanZoomScaleFactor = _scaleFactor / _pointerScaleFactor;
_initialPanZoomRotationFactor = _pointerPanZooms.values.map((_PointerPanZoomData x) => x.rotation).reduce((double a, double b) => a + b);
}
}
}
}