ResizeStrip

A thin invisible widget that forwards a window resize gesture to the platform host when the user presses the primary button inside it. Used to build a 6-px resize frame around a borderless window on Wayland.

This is the frame complement to [crate::title_bar::DragRegion]: drag moves the window, resize strips drag the window edges. On platforms that don't expose Window::drag_resize_window (notably winit's macOS backend), PlatformTitleBarHost::begin_resize returns PlatformError::Unsupported and the strip becomes a silent no-op — macOS handles edge resize via its own native chrome.

Builder methods at a glance

horizontal, vertical, corner

API reference

📖 Full rustdoc API for this module

pub struct ResizeStrip

A single edge of a resize frame. Construct one per side and lay them out around your content (HStack of left + content + right inside a VStack of top + middle + bottom is the conventional shape — see the title bar demo for an example).

#![allow(unused)]
fn main() {
pub struct ResizeStrip { /* fields */ }
}

Methods

pub fn horizontal( host: Rc<dyn PlatformTitleBarHost>, edge: ResizeEdge, thickness: f32, ) -> Self

Build a horizontal (top / bottom) strip of the given height. The width is unconstrained — the strip claims whatever its parent container offers, so it can stretch across the full window width.

pub fn vertical(host: Rc<dyn PlatformTitleBarHost>, edge: ResizeEdge, thickness: f32) -> Self

Build a vertical (left / right) strip of the given width. The height is unconstrained.

pub fn corner(host: Rc<dyn PlatformTitleBarHost>, edge: ResizeEdge, size: f32) -> Self

Build a square corner cell of the given size. The corner handles a diagonal resize gesture (e.g. TopLeft does NW/SE resize). Should be placed on top of the edge strips at the four corners so the framework's hit-test routes the click to the corner rather than the adjacent edge.