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# Objective Adds a better interface for performing mathematical operations with UI unit `Val`. Fixes #6080. ## Solution - Added `try_add` and `try_sub` methods to Val. - Removed the `Add` and `AddAssign` impls for `Val` that introduced unintuitive and bug-prone behaviour. - As a consequence of the prior, ~~changed the `Add` and `Sub` impls for the `Size` struct to take a `(Val, Val)` instead of `Vec2`~~ deleted the `Add` and `Sub` impls for the `Size` struct - Added a `From<(Val, Val)>` impl for the `Size` struct - Added `evaluate(size: f32)` method that converts from `Val::Percent` to `Val::Px`. - Added `try_add_with_size` and `try_sub_with_size` methods to `Val`, which evaluate `Val::Percent` values into `Val::Px` values before adding. --- ## Migration Guide Instead of using the + and - operators, perform calculations on `Val`s using the new `try_add` and `try_sub` methods. Multiplication and division remained unchanged. Also, when adding or subtracting from `Size`, ~~use a `Val` tuple instead of `Vec2`~~ perform the addition on `width` and `height` separately. Co-authored-by: Dawid Piotrowski <41804418+Pietrek14@users.noreply.github.com> |
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| .. | ||
| flex | ||
| render | ||
| widget | ||
| entity.rs | ||
| focus.rs | ||
| geometry.rs | ||
| lib.rs | ||
| ui_node.rs | ||
| update.rs | ||