// If both left and right are defined, then use left. Otherwise return +left or
// -right depending on which is defined.
YGFloatOptional YGNode::relativePosition(
const YGFlexDirection axis,
const float axisSize) const {
if (isLeadingPositionDefined(axis)) {
return getLeadingPosition(axis, axisSize);
}
YGFloatOptional trailingPosition = getTrailingPosition(axis, axisSize);
if (!trailingPosition.isUndefined()) {
trailingPosition = YGFloatOptional{-1 * trailingPosition.unwrap()};
}
return trailingPosition;
}
YGFloatOptional YGNode::getLeadingPadding(
const YGFlexDirection axis,
const float widthSize) const {
const YGFloatOptional paddingEdgeStart =
YGResolveValue(style_.padding[YGEdgeStart], widthSize);
if (YGFlexDirectionIsRow(axis) &&
!style_.padding[YGEdgeStart].isUndefined() &&
!paddingEdgeStart.isUndefined() && paddingEdgeStart.unwrap() >= 0.0f) {
return paddingEdgeStart;
}
YGFloatOptional resolvedValue = YGResolveValue(
YGComputedEdgeValue(
style_.padding, leading[axis], CompactValue::ofZero()),
widthSize);
return YGFloatOptionalMax(resolvedValue, YGFloatOptional(0.0f));
}
