getDefaultCrossAxisDirection static method
- BuildContext context,
- AxisDirection axisDirection
Given a BuildContext and an AxisDirection, determine the correct cross axis direction.
This depends on the Directionality if the axisDirection
is vertical;
otherwise, the default cross axis direction is downwards.
Implementation
static AxisDirection getDefaultCrossAxisDirection(BuildContext context, AxisDirection axisDirection) {
switch (axisDirection) {
case AxisDirection.up:
assert(debugCheckHasDirectionality(
context,
why: "to determine the cross-axis direction when the viewport has an 'up' axisDirection",
alternative: "Alternatively, consider specifying the 'crossAxisDirection' argument on the Viewport.",
));
return textDirectionToAxisDirection(Directionality.of(context));
case AxisDirection.right:
return AxisDirection.down;
case AxisDirection.down:
assert(debugCheckHasDirectionality(
context,
why: "to determine the cross-axis direction when the viewport has a 'down' axisDirection",
alternative: "Alternatively, consider specifying the 'crossAxisDirection' argument on the Viewport.",
));
return textDirectionToAxisDirection(Directionality.of(context));
case AxisDirection.left:
return AxisDirection.down;
}
}