protected override bool hitTestChildren(BoxHitTestResult result, Offset position)
{
D.assert(position != null);
RenderBox child = lastChild;
while (child != null)
{
_SlidingSegmentedControlContainerBoxParentData childParentData =
child.parentData as _SlidingSegmentedControlContainerBoxParentData;
if ((childParentData.offset & child.size).contains(position))
{
Offset center = (Offset.zero & child.size).center;
return(result.addWithRawTransform(
transform: MatrixUtils.forceToPoint(center),
position: center,
hitTest: (BoxHitTestResult result1, Offset position1) => {
D.assert(position1 == center);
return child.hitTest(result1, position: center);
}
));
}
child = childParentData.previousSibling;
}
return(false);
}
public override bool hitTest(BoxHitTestResult result, Offset position = null)
{
if (base.hitTest(result, position: position))
{
return(true);
}
Offset center = child.size.center(Offset.zero);
return(result.addWithRawTransform(
transform: MatrixUtils.forceToPoint(center),
position: center,
hitTest: (BoxHitTestResult boxHitTest, Offset offsetPosition) => {
D.assert(offsetPosition == center);
//WARNING: inconsistent with flutter (zxw): I believe that there is a bug here in flutter
//in flutter, the following line is "return child.hitTest(boxHitTest, position: center); ". This is nonsense since it will always return true regardless of the value of the input parameter: position.
//we have tested a bit in flutter and found that, since an inputPadding has a Semantics as it parent which shares the same size, the Semantics's hitTest can hide this bug in flutter
//Therefore this bug only occurs in UIWidgets
//We are not very clear whether this is the best fix though. Please feel free to optimize it
return child.hitTest(boxHitTest, position: position);
}
));
}