Struct Region 

pub struct Region { /* private fields */ }

An area of a window in logical pixels, built from rectangles, rounded rectangles and ellipses joined with union, subtract, intersect and xor, applied in the order they are called.

PanelWindow::mask takes one: pointer input outside it goes to whatever is below the window.

use crabshell_ui::Region;

// A 200 by 30 bar that only takes clicks at its two rounded ends.
let ends = Region::rect(0, 0, 40, 30)
    .radius(8.0)
    .union(Region::rect(160, 0, 40, 30).radius(8.0));

Implementations

impl Region

pub fn empty() -> Region

No area at all: a window masked with it lets every click through.

pub fn rect(x: i32, y: i32, width: u32, height: u32) -> Region

The rectangle at x, y, relative to the window’s top left.

pub fn ellipse(x: i32, y: i32, width: u32, height: u32) -> Region

The ellipse that fills the rectangle at x, y.

pub fn radius(self, radius: f32) -> Region

Rounds every corner of a rect. It does nothing to other shapes.

pub fn radii( self, top_left: f32, top_right: f32, bottom_right: f32, bottom_left: f32, ) -> Region

Rounds each corner of a rect on its own. It does nothing to other shapes.

pub fn union(self, other: Region) -> Region

Adds other’s area.

pub fn subtract(self, other: Region) -> Region

Removes other’s area.

pub fn intersect(self, other: Region) -> Region

Keeps only the area also in other.

pub fn xor(self, other: Region) -> Region

Keeps the area in exactly one of the two.

pub fn rects(&self, width: u32, height: u32) -> Vec<[i32; 4]>

The region inside a width by height window as rectangles [x, y, width, height], which don’t overlap. Curves are followed to the nearest whole pixel at each row’s center.

Trait Implementations

impl Clone for Region

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Region

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

Formats the value using the given formatter.

impl IntoProp<Option<Region>> for Region

fn into_prop(self) -> Prop<Option<Region>>

Wraps the value or closure.

impl PartialEq for Region

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Region