类型 MessageScrollerItemGeometry

API 文档由 Go 源码生成，内容为英文。

type MessageScrollerItemGeometry struct {
	Index         int
	ContentOffset float32
	Extent        float32
	Bounds        ui.Rect
	Visible       bool
}

MessageScrollerItemGeometry maps one caller-owned item from content space to viewport space. Items are never retained or virtualized by the component.