Module cover 

Where overlays sit in the frame being drawn, for native views over the window (a webview) that nothing gpui paints can cover.

A cover is a rectangle recorded during prepaint, stamped with its place in the frame’s prepaint order. gpui prepaints an element that paints over another after that other one: a later sibling, a deferred layer, the tooltip, the drag preview. So a native view takes a mark in its own prepaint and asks covered in its paint, when every cover of the frame is recorded.

crate::surface’s cards and the dialog and sheet scrims record themselves. Anything else an app floats puts a cover in it.

A cover in a view gpui reuses from the last frame (AnyView::cached) is not recorded.

Structs

Mark

A place in a frame’s prepaint order.

Functions

cover

An element filling its parent, recorded as a cover. Its parent’s box is what it records, so it goes in the overlay’s outermost box.

covered

Whether a cover recorded after mark in this frame overlaps bounds. Call it from paint.

mark

The current place in the prepaint order. Call it from prepaint.

record

Records bounds as covered. Call it from prepaint.