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kotlinlang

Hey, everyone.
Why `PaddingValues.calculateLeftPadding` need a LayoutDirection parameter.
I understand `PaddingValues.calculateStartPadding` need a LayoutDirection, but Left is left, why need LayoutDirection.

I've always wondered the same thing, that always felt odd to me :sweat_smile:

If padding values were stored in absolute values (like `left` and `right`) then `calculateLeftPadding` could just return `left` without looking at `LayoutDirection`.
But that’t not always the case. In fact the majority of cases you would use a version with relative paddings  (represented by internal class `PaddingValuesImpl`) that stores values in `start` and `end`. When it’s asked to give you `left` padding it needs to know the layout direction to do the opposite translation.