Struct CornerRadii 

pub struct CornerRadii {
    pub top_left: f64,
    pub top_right: f64,
    pub bottom_right: f64,
    pub bottom_left: f64,
}

A radius for each corner of a rectangle, clockwise from the top left (docs/canvas.md “Rounded corners”). The shape a bar in a chart wants (rounded at its value end, square against its axis), a tab (rounded on top), or a card joined to its neighbor.

Radii are in points and never negative. CornerRadii::fitted shrinks them the way CSS does when two radii on one side would overlap, which is what a caller animating a radius or drawing a short bar needs to not think about.

Fields

top_left: f64

top_right: f64

bottom_right: f64

bottom_left: f64

Implementations

impl CornerRadii

pub fn uniform(r: f64) -> Self

The same radius on every corner: what Shape::RoundedRect draws.

pub fn top(r: f64) -> Self

Rounded along the top edge, square along the bottom: a bar standing on its axis.

pub fn bottom(r: f64) -> Self

Rounded along the bottom edge: a bar hanging below its axis.

pub fn left(r: f64) -> Self

Rounded along the left edge: a bar growing leftward from its axis.

pub fn right(r: f64) -> Self

Rounded along the right edge: a bar growing rightward from its axis.

pub fn to_array(self) -> [f64; 4]

The four radii, clockwise from the top left.

pub fn is_zero(self) -> bool

Whether every corner is square.

pub fn is_uniform(self) -> bool

Whether every corner has the same radius, so the rectangle is a Shape::RoundedRect.

pub fn fitted(self, size: Size) -> Self

These radii made to fit a size rectangle, the rule CSS uses for border-radius: a negative or non-finite radius is square, and when the two radii along any side add up to more than that side, every radius is scaled down by the same factor until none overlap. Scaling all four together keeps the corners in proportion, where clamping each one alone would turn a pill into a lopsided shape.

Trait Implementations

impl Clone for CornerRadii

fn clone(&self) -> CornerRadii

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for CornerRadii

impl Debug for CornerRadii

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for CornerRadii

fn default() -> CornerRadii

Returns the “default value” for a type.

impl PartialEq for CornerRadii

fn eq(&self, other: &CornerRadii) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CornerRadii