hitTestChild method
Implementation
bool hitTestChild(
BoxHitTestResult result,
RenderBox child, {
required Offset position,
}) {
final TextParentData textParentData = child.parentData as TextParentData;
final Matrix4 transform = Matrix4.translationValues(
textParentData.offset.dx + effectiveOffset.dx,
textParentData.offset.dy + effectiveOffset.dy,
0.0)
..scale(
textParentData.scale,
textParentData.scale,
textParentData.scale,
);
final bool isHit = result.addWithPaintTransform(
transform: transform,
position: position,
hitTest: (BoxHitTestResult result, Offset transformed) {
assert(() {
final Offset manualPosition =
(position - textParentData.offset - effectiveOffset) /
textParentData.scale!;
return (transformed.dx - manualPosition.dx).abs() <
precisionErrorTolerance &&
(transformed.dy - manualPosition.dy).abs() <
precisionErrorTolerance;
}());
return child.hitTest(result, position: transformed);
},
);
return isHit;
}