Struct ResizeHitTest 

pub struct ResizeHitTest { /* private fields */ }

Hit-test helper for resize handles on windows with rounded corners.

macOS Tahoe uses a 26pt corner radius, which means the visual corner arc does not cover the full 19×19 resize hotspot. This struct expands the clickable area 8px beyond the visual corner edge so users can still grab the resize handle reliably.

Implementations

impl ResizeHitTest

pub fn new( window_size: PhysicalSize<u32>, corner_radius: f32, expansion: f32, ) -> Self

Creates a new hit-test helper.

Arguments

• window_size — the current window size in physical pixels.
• corner_radius — the corner radius in points (e.g., 26.0 for Tahoe).
• expansion — extra pixels to expand beyond the visual edge (e.g., 8.0).

pub fn hit_test(&self, pos: PhysicalSize<u32>, corner_radius: f32) -> bool

Tests whether pos (a point relative to the window’s top-left corner) falls within the expanded resize-hit region for any corner.

The hit region for each corner is a square of side corner_radius + expansion, anchored at the corner. A point is considered a hit if it falls within any of the four corner squares.