Struct RRect 

pub struct RRect { /* private fields */ }

圆角矩形，支持四角独立半径。 Rounded rectangle with per-corner radii (each corner can have different x/y).

Implementations

impl RRect

pub fn new() -> Self

创建空圆角矩形。Creates an empty RRect.

pub fn from_rect(rect: &Rect) -> Self

从矩形创建（直角）。Creates RRect from rect (sharp corners).

pub fn from_oval(rect: &Rect) -> Self

从椭圆边界创建。Creates oval (ellipse) bounded by rect.

pub fn from_rect_xy(rect: &Rect, rx: f32, ry: f32) -> Self

从矩形与统一圆角创建。Creates rounded rect with uniform radii.

pub fn from_rect_radii(rect: &Rect, radii: &[Radii; 4]) -> Self

从矩形与四角半径创建。Creates RRect with per-corner radii.

radii 顺序：UpperLeft, UpperRight, LowerRight, LowerLeft。 Radii order: UpperLeft, UpperRight, LowerRight, LowerLeft.

pub fn rect(&self) -> Rect

边界矩形。Returns the bounding rect.

pub fn width(&self) -> f32

宽度。Returns width.

pub fn height(&self) -> f32

高度。Returns height.

pub fn is_empty(&self) -> bool

是否为空。Returns true if empty.

pub fn is_rect(&self) -> bool

是否为普通矩形。Returns true if sharp corners (no rounding).

pub fn is_oval(&self) -> bool

是否为椭圆。Returns true if oval.

pub fn is_simple(&self) -> bool

是否所有角半径相同。Returns true if uniform radii (simple type).

pub fn radii(&self, corner: RectCorner) -> Radii

获取某角半径。Returns radii for corner (UpperLeft, UpperRight, LowerRight, LowerLeft).

pub fn is_valid(&self) -> bool

数据是否有效。Returns true if valid.

Trait Implementations

impl Clone for RRect

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for RRect

fn default() -> Self

Returns the “default value” for a type.