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DocumentationFoundationPortal

Portal

A portal renders a portal widget that “floats” on top of a child widget.

API Reference

This widget is typically used to create other high-level widgets, e.g., popover or tooltip. You should prefer those high-level widgets unless you’re creating a custom widget.

Usage

FPortal(...)

FPortal(
  controller: OverlayPortalController(),
  spacing: FPortalSpacing.zero,
  shift: FPortalShift.flip,
  offset: Offset.zero,
  portalConstraints: const FAutoWidthPortalConstraints(),
  portalAnchor: Alignment.topCenter,
  childAnchor: Alignment.bottomCenter,
  viewInsets: EdgeInsets.zero,
  barrier: Container(color: Colors.blue),
  portalBuilder: (context, controller) => const Text('portal'),
  builder: (context, controller, child) => child!,
  child: const Text('child'),
);
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