Fonde UI

Desktop-first Flutter UI utility components optimized for native-like interaction, with zoom scaling support.

  • Fonde (pronounced fond) — named after fond de veau.

Screenshot

Live Demo

Overview

fonde_ui is a Flutter UI utility component library for desktop applications, developed for RinneGraph. It provides improved multi-pane layouts, instant feedback interaction, and zoom scaling support out-of-the-box.

Platform Support

  • Flutter: >=3.41.2
  • Dart: ^3.7.0
  • Platforms: macOS, Windows, Linux, iOS, Android

Goals

Fonde UI's goal is to provide operational and visual comfort in desktop apps — achieving the same feel as native applications using Flutter. In Fonde UI, comfort takes priority over visual richness.

Features

  • 🖥️ Desktop-first — Optimized for desktop applications over mobile, with interactions and layouts tailored for keyboard, mouse, and large screens
  • ⚡ Native-like interaction — Instant feedback and restrained animations for smooth operation
  • 🎨 Flat design — Clean, simple visuals inspired by Figma, with smooth-curve corners throughout
  • 🪟 Multi-pane layout — Built-in support for a three-pane window with a vertical Launch Bar
  • 🔍 Zoom scaling support — All components scale uniformly with zoom, ensuring a consistent look at any size
  • 🔋 Batteries included — Handy widgets tuned for desktop applications, ready to use out of the box
  • 🏠️ Customizable appearance — Supports dark mode, color themes, and custom fonts
  • 🌐 Cross-platform — Runs on macOS, Windows, Linux, iOS, and Android

UI Utility Components

Layout

  • Scaffold — integrated three-pane layout with Launch Bar, primary/secondary sidebar, and main content
  • Master Detail Layout — master/detail split layout
  • Tab View — tab bar and tab view
  • Split Pane — resizable split pane
  • Panel — container with themed background and border
  • Section
  • Scroll View
  • Toolbar — main, primary/secondary sidebar
  • Launch Bar — vertical icon navigation bar with top/bottom sections
  • Sidebar — resizable primary and secondary sidebar areas; standard and floating panel (macOS) styles
  • Sidebar List — with filled, subtle, and inset item styles

Data View

  • Table View
  • Outline View — tree-style outline view
  • List Tile

Buttons

  • Button — general purpose button, smooth curve corner
  • Icon Button
  • Icon Label Button
  • Segmented Button
  • Split Button — button with dropdown for secondary actions
  • Button Group
  • Overflow Menu Button — collapses excess items into a popup menu
  • Context Menu
  • Overflow Menu
  • Dropdown Menu
  • Popup Menu

Input

  • Text Field
  • Search Field
  • Tags Field
  • Number Field — numeric input with − / + buttons, min/max/step
  • Checkbox — rectangle/circle shape; filled/outline/iconOnly fill style
  • Radio Button
  • Switch — toggle switch; compact and wide styles
  • Dropdown Menu
  • Expansion Tile
  • Date Picker — monthly calendar, single and range selection
  • Slider
  • Color Picker — HSV canvas, hue/alpha sliders, palette swatches, eyedropper

Feedback

  • Dialog — modal dialog
  • Confirmation Dialog
  • Toast
  • Snack Bar
  • Popover
  • Notification Overlay
  • Tooltip
  • Linear Progress Indicator
  • Circular Progress Indicator

Typography

  • Text — with semantic variants (page title, body, caption, code, table, etc.)

Visual

  • Divider
  • Tag
  • Container
  • Selection Decorator
  • Rectangle Border — Figma-style squircle border container
  • Eye Dropper — in-window color sampling with zoom loupe

Interaction

  • Gesture Detector — single/double tap without delay, hover and cursor support
  • Draggable
  • Shortcut Scope

Platform

  • Platform Menus — macOS native menu bar

Design Tokens

  • Spacing — zoomable spacing (4px grid)
  • Padding — zoomable padding
  • Border Radius — smooth squircle curve
  • Border

State Management

The current version uses Riverpod 3.x for theme, accessibility config, and sidebar state management.

Riverpod integration is optional — import fonde_ui_riverpod.dart separately when needed.

Setup

Add to your pubspec.yaml:

dependencies:
  fonde_ui: ^0.5.0-dev

Minimal Example

import 'package:fonde_ui/fonde_ui.dart';               // Core + all widgets
import 'package:fonde_ui/fonde_ui_riverpod.dart';      // Riverpod providers (optional)

void main() {
  runApp(
    FondeApp(
      title: 'My App',
      home: FondeScaffold(
        toolbar: MyToolbar(),
        content: MyContent(),
      ),
    ),
  );
}

FondeApp wraps Riverpod's ProviderScope and Material's MaterialApp internally.

Documentation

Full documentation is under preparation. In the meantime, refer to the example app for usage demonstrations.

For LLM context, load llms.txt.

License

Apache License 2.0

Apps Created with Fonde UI

Libraries

fonde_ui
Desktop-first Flutter UI component library.
fonde_ui_riverpod
Riverpod integration for fonde_ui — DEPRECATED.