private void OnMove(GestureLayer.MomentumData data)
{
try
{
var properties = BuildProperties(true, false);
var modifiers = VirtualKeyModifiers.None;
var point = GetPoint(data.X2, data.Y2);
_ownerEvents.RaisePointerMoved(
new PointerEventArgs(
new Windows.UI.Input.PointerPoint(
frameId: GetNextFrameId(),
timestamp: Math.Max(data.VerticalSwipeTimestamp, data.HorizontalSwipeTimestamp),
device: PointerDevice.For(PointerDeviceType.Touch),
pointerId: 0,
rawPosition: point,
position: point,
isInContact: properties.HasPressedButton,
properties: properties
),
modifiers
)
);
}
catch (Exception e)
{
this.Log().Error("Failed to raise PointerMoved", e);
}
}
void OnDrawerDragged(GestureLayer.MomentumData moment)
{
var toMove = _drawerBox.Geometry;
toMove.Y = (moment.Y2 < 0) ? 0 : moment.Y2;
_drawerBox.Geometry = toMove;
}
void OnContentDragStarted(GestureLayer.MomentumData moment)
{
_fadeInCancelTokenSource?.Cancel();
_fadeInCancelTokenSource = null;
if (!_isOpen)
{
_ = HideAsync(_drawerBox);
}
}
bool ShouldBeOpen(GestureLayer.MomentumData data)
{
var momentum = IsHorizontalSwipe ? data.HorizontalMomentum : data.VerticalMomentum;
if (Math.Abs(momentum) > MovementThreshold)
{
return(IsNegativeDirection ? momentum < 0 : momentum > 0);
}
return(Math.Abs(GetSwipeOffset(data)) > MaximumSwipeSize / 2.0);
}
void OnDrawerDragEnded(GestureLayer.MomentumData moment)
{
if (_drawerBox.Geometry.Y < (_mainLayout.Geometry.Height / 2))
{
Open();
}
else
{
Close();
}
}
int GetSwipeOffset(GestureLayer.MomentumData data)
{
if (IsHorizontalSwipe)
{
return DrawerState == SwipeDrawerState.Closed ? (data.X2 - data.X1) :
(((IsNegativeDirection ? -1 : 1) * MaximumSwipeSize) - (data.X1 - data.X2));
} else
{
return DrawerState == SwipeDrawerState.Closed ? (data.Y2 - data.Y1) :
(((IsNegativeDirection ? -1 : 1) * MaximumSwipeSize) - (data.Y1 - data.Y2));
}
}
private void OnEnd(GestureLayer.MomentumData moment)
{
var direction = SwipeDirectionHelper.GetSwipeDirection(new Point(moment.X1, moment.Y1), new Point(moment.X2, moment.Y2));
var swipeDirection = direction == SwipeDirection.Left
? ItemSwipeDirection.Left
: direction == SwipeDirection.Right
? ItemSwipeDirection.Right
: direction == SwipeDirection.Up
? ItemSwipeDirection.Up
: ItemSwipeDirection.Down;
CardsViewElement?.OnSwiped(swipeDirection);
}
void OnEnded(GestureLayer.MomentumData moment)
{
if (_refreshState != RefreshState.Drag)
{
return;
}
if (_shouldRefresh)
{
BeginRefreshing(true);
_shouldRefresh = false;
}
else
{
ResetRefreshing();
}
_refreshIcon.IsPulling = false;
}
async void OnEnd(GestureLayer.MomentumData moment)
{
if (SwipeDirection == 0)
return;
if (ShouldBeOpen(moment))
{
await SwipeOpenAsync();
if (CurrentItems.Mode == SwipeMode.Execute)
{
ExecuteItems(CurrentItems);
_ = SwipeCloseAsync();
}
}
else
{
await SwipeCloseAsync();
}
}
void OnMoved(GestureLayer.MomentumData moment)
{
if (_refreshState == RefreshState.Idle && _isRefreshEnabled)
{
var isEdge = IsEdgeScrolling?.Invoke() ?? true;
if (isEdge)
{
_refreshState = RefreshState.Drag;
_refreshIcon.IsPulling = true;
}
}
if (_refreshState == RefreshState.Drag)
{
var dy = moment.Y2 - moment.Y1;
if (dy < 0)
{
return;
}
MoveLayout(dy);
}
}
void OnMoved(GestureLayer.MomentumData moment)
{
if (SwipeDirection == 0)
{
var direction = SwipeDirectionHelper.GetSwipeDirection(new Graphics.Point(moment.X1, moment.Y1), new Graphics.Point(moment.X2, moment.Y2));
if (HasRightItems && direction == SwipeDirection.Left)
{
SwipeDirection = SwipeDirection.Left;
}
else if (HasLeftItems && direction == SwipeDirection.Right)
{
SwipeDirection = SwipeDirection.Right;
}
else if (HasTopItems && direction == SwipeDirection.Down)
{
SwipeDirection = SwipeDirection.Down;
}
else if (HasBottomItems && direction == SwipeDirection.Up)
{
SwipeDirection = SwipeDirection.Up;
}
else
{
return;
}
UpdateItems();
((ISwipeViewController)Element).SendSwipeStarted(new SwipeStartedEventArgs(SwipeDirection));
}
var offset = GetSwipeOffset(moment);
if (IsNegativeDirection)
{
if (offset > 0)
{
offset = 0;
}
}
else
{
if (offset < 0)
{
offset = 0;
}
}
if (Math.Abs(offset) > MaximumSwipeSize)
{
offset = MaximumSwipeSize * (offset < 0 ? -1 : 1);
}
var toDragBound = NativeView.Geometry;
if (IsHorizontalSwipe)
{
toDragBound.X += offset;
}
else
{
toDragBound.Y += offset;
}
Platform.GetRenderer(SwipeView.Content).NativeView.Geometry = toDragBound;
((ISwipeViewController)Element).SendSwipeChanging(new SwipeChangingEventArgs(SwipeDirection, Forms.ConvertToScaledDP(offset)));
}
private void OnMoved(GestureLayer.MomentumData moment)
{
}
void OnContentDragEnded(GestureLayer.MomentumData moment)
{
_fadeInCancelTokenSource = new CancellationTokenSource();
_ = ShowAsync(_drawerBox, cancelltaionToken: _fadeInCancelTokenSource.Token);
}
