Floating Menu Expendable

A draggable floating handle that opens a customizable panel (side or vertical).

Designed for:

• Quick actions / shortcuts
• Floating toolbars
• Chat / support / menu buttons

Features

• Draggable and snaps to the nearest screen edge
• Two open modes:
  • FloatingMenuExpendableOpenMode.side: panel opens horizontally next to the handle
    • FloatingMenuExpendableOpenMode.vertical: panel opens below the handle (or above if near bottom)
• Background barrier with blur + color, dismissible on tap
• UI customization via FloatingMenuExpendableStyle
• FloatingMenuExpendableController for open/close/toggle and side tracking

New:

• Expand from the handle (unified handle + panel) using expandPanelFromHandle
• Switch handle content while open using handleOpenChild (defaults to a close icon)
• Anchored overlay for grid/list items using FloatingMenuAnchoredOverlay (does not affect layout)

Preview

Note: pub.dev does not reliably render relative image paths. Use GitHub raw URLs for previews.

Default behavior:

Expand-from-handle behavior:

Anchored overlay behavior:

Anchored overlay (new)

If you want a widget (like a Grid/List item) to open a panel without changing layout, use FloatingMenuAnchoredOverlay.

• The panel is rendered in an Overlay and stays anchored to the child.
• If you want the visual effect of "the item expands", set expandFromAnchor: true.
• The rest of the UI is dimmed/blurred using a barrier.
• When closeOnScroll: true, a scroll/pan gesture on the barrier will close the overlay.

final anchoredController = FloatingMenuAnchoredOverlayController();

FloatingMenuAnchoredOverlay(
	controller: anchoredController,
	expandFromAnchor: true,
	closeOnScroll: true,
	panelBuilder: (context) {
		return Material(
			color: Colors.white,
			borderRadius: const BorderRadius.all(Radius.circular(16)),
			child: SizedBox(
				width: 220,
				child: Padding(
					padding: const EdgeInsets.all(12),
					child: Column(
						mainAxisSize: MainAxisSize.min,
						crossAxisAlignment: CrossAxisAlignment.start,
						children: [
							const Text('Actions'),
							const SizedBox(height: 8),
							TextButton(
								onPressed: anchoredController.close,
								child: const Text('Close'),
							),
						],
					),
				),
			),
		);
	},
	child: GestureDetector(
		onTap: anchoredController.toggle,
		child: const Card(child: SizedBox(height: 120)),
	),
)

Installation

Add the package to your pubspec.yaml.

Import

import 'package:floating_menu_expendable/floating_menu_expendable.dart';

Quick usage

final controller = FloatingMenuExpendableController();

Stack(
	children: [
		FloatingMenuExpendable(
			controller: controller,
			panelWidth: 320,
			panelHeight: 240,
			handleChild: const Icon(Icons.menu),
			panelChild: const ColoredBox(color: Colors.white),
		),
	],
)

Expand from handle (new)

If you want the panel to expand from the same handle (so it looks like one widget), enable expandPanelFromHandle.

FloatingMenuExpendable(
	controller: controller,
	panelWidth: 320,
	panelHeight: 240,
	expandPanelFromHandle: true,
	// Optional: what to show inside the handle when open.
	handleOpenChild: const Icon(Icons.close_rounded),
	handleChild: const Icon(Icons.menu),
	panelChild: const ColoredBox(color: Colors.white),
)

Customize the UI (Style)

Use FloatingMenuExpendableStyle to customize blur, barrier color, panel radius, and handle ink effects.

FloatingMenuExpendable(
	controller: controller,
	panelWidth: 320,
	panelHeight: 240,
	handleChild: const Icon(Icons.menu),
	panelChild: const ColoredBox(color: Colors.white),
	style: const FloatingMenuExpendableStyle(
		// Background barrier
		showBarrierWhenOpen: true,
		barrierDismissible: true,
		barrierColor: Color(0x66000000),
		barrierBlurSigmaX: 10,
		barrierBlurSigmaY: 10,

		// Panel
		panelBorderRadius: BorderRadius.all(Radius.circular(18)),
	),
)

Controller

controller.open();
controller.close();
controller.toggle();

You can also listen to where the handle is docked:

• controller.physicalSide (left / right)
• controller.verticalSide (top / bottom) when using vertical mode

Example app

See the runnable Flutter demo in the example/ folder.

Notes

• The widget is intended to be used inside a Stack.
• Provide your own panelChild and handleChild to match your app UI.