Projects sharing features with BackgroundLibrary

Compose Samples is a collection of reference implementations for the Jetpack Compose UI library, serving as a practical guide for building native Android user interfaces. It demonstrates the use of a declarative framework where Kotlin functions describe layout structures and data dependencies, enabling developers to construct modern, reactive interfaces. The repository highlights architectural patterns that prioritize maintainability and testability, such as layered organization and unidirectional data flow. It showcases how to implement adaptive layouts that automatically adjust to various s

Vue is a progressive, component-based JavaScript framework designed for building reactive user interfaces and single-page applications. It centers on a declarative template system that transforms HTML into efficient render functions, allowing developers to organize complex interfaces into isolated, reusable units that synchronize automatically with application state. The framework distinguishes itself through a dependency-tracking reactivity system that monitors data access during rendering to trigger precise updates. It provides a flexible architecture that supports both incremental adoption

react-calendar is a customizable date grid and picker for React applications. It provides an interactive interface for selecting single or multiple dates and navigating between months and years. The component uses browser internationalization APIs to format months and days, enabling multilingual date formatting for different global regions. It allows for external customization through prop-driven render overrides to replace default date cell displays. The library handles the underlying date calculations and state-driven navigation required for scheduling interfaces and date-based grids.

SwiftWebUI is a server-side UI framework and declarative web library that allows for the creation of web interfaces using a syntax based on the SwiftUI pattern. It functions as a server-driven system where the interface structure and state are managed on the server and rendered within a web browser. The framework enables the development of web interfaces through a declarative domain specific language that mirrors native Apple platform interface patterns. It maintains a live connection between the server and browser to handle real-time state synchronization and user interactivity. The system

Nui is a declarative UI styling tool and stylesheet library for iOS applications. It separates visual design from programmatic logic by using a centralized stylesheet to define interface colors, fonts, and borders instead of relying on inline code. The engine features hot-reloading capabilities that monitor stylesheet files and update the visual interface instantly without restarting the application. It also includes a responsive layout framework and a state-based visual manager to adjust styles based on device orientation, screen dimensions, and interaction states. The system covers a broad

Workflow-kotlin is a cross-platform state management and UI binding framework for Kotlin that models application navigation, background tasks, and screen rendering through composable, hierarchical state machines. The architecture drives application behavior by flowing immutable data downward to declarative user interfaces and routing user interactions upward through named event handlers. The library includes multiplatform target support for compiling shared code across operating systems, along with asynchronous operation execution that handles background tasks safely outside render passes. I

Preact is a declarative UI library and a lightweight alternative to React for building user interfaces. It utilizes a component-based architecture and a virtual DOM to sync application state to the browser interface efficiently. The framework implements a modern React API and provides a compatibility layer to ensure existing component libraries and patterns can run within its environment. It also functions as a server-side rendering engine, generating HTML on the server and hydrating it on the client to optimize page load speeds. Additional capabilities include virtual DOM state management t

This project is a declarative user interface framework designed for building shared applications across mobile, desktop, and web environments. It utilizes a unified codebase to define application layouts and state management, enabling developers to target multiple operating systems through a single development workflow. The framework leverages a cross-platform graphics engine to render visual elements consistently across different platforms. It incorporates a platform-specific interop layer that allows shared code to access native hardware features and system application programming interface

PopupView is a SwiftUI popup library and modal view manager used to display toasts and floating alerts over active screens. It functions as an overlay animation framework and notification system for rendering non-intrusive UI elements within a SwiftUI user interface. The library provides tools for overlay popup rendering and notification management, allowing for the creation of custom views that appear above primary application content. It includes capabilities for popup background customization and layout configuration to manage screen positioning and padding. The system handles modal state

ShadowLayout is an Android UI component styling library used to create depth effects and interactive state transitions within mobile layouts. It provides a system for implementing complex visual effects such as custom shadows, rounded corners, and borders for views without requiring custom XML shape files. The project features a custom shadow engine that allows for adjustable blur, offset, and spread settings to simulate depth. It includes tools for precise corner radius control and geometric border rendering for both solid and dashed outlines. The library provides a set of interactive compo

XLForm is a declarative UI library and framework for generating synchronized iOS table-view forms from structured definitions. It provides a toolkit for building mobile data-entry screens using Swift and Objective-C, allowing developers to create interfaces based on declarative sections and rows. The framework features dynamic interface synchronization and conditional logic to manage row visibility and editing restrictions. It supports the creation of dynamic multivalued sections where users can insert, delete, or reorder rows at runtime. The library includes a variety of interactive input c

Mesop is a stateful, declarative Python web UI framework and component library designed for building interactive web applications and AI demos. It allows for the construction of data-driven interfaces and chat systems using only Python, removing the need to write separate HTML or CSS. The framework is specifically tailored for AI application development, offering dedicated tools for conversational UI design and the creation of dashboards for large language model applications. It distinguishes itself with a visual UI editor for real-time property adjustments and the ability to embed custom Jav

This project is a Go WebAssembly frontend framework designed for building interactive web applications. It provides a toolkit for executing Go code directly in the browser to handle client-side logic and user interface development. The framework functions as a declarative UI library and a progressive web app toolset. It enables the creation of installable applications that can operate in standalone windows and maintain offline functionality. The system manages browser-side application development through a component-based view hierarchy and a declarative syntax for defining UI elements. It i

Makie.jl is a high-performance Julia data visualization library and hardware-accelerated plotting engine used to create interactive 2D and 3D visualizations. It functions as a reactive visualization framework where plots update automatically via observables and compute graphs, and as a vector graphics generator for high-resolution academic output. The system is distinguished by its backend-agnostic rendering pipeline, which supports OpenGL, WebGL, and ray-traced scenes. It employs a grammar-of-graphics approach to map variables to aesthetic attributes and utilizes a hierarchical scene graph t

FAST is a web components framework and declarative UI library used to build adaptive user interfaces. It functions as a server-side rendering engine and design system implementation, enabling the creation of modular components based on web standards. The framework focuses on cross-framework component compatibility, allowing user interface elements to remain functional across different front-end frameworks and modern browsers. It implements a design language through a collection of pre-defined visual components to ensure consistency across professional applications. The system covers state-dr

This project is a declarative UI pattern library and reference implementation for structuring layouts, navigation flows, and data collections across Apple platforms. It provides a collection of practical implementation patterns and component examples for building user interfaces using the SwiftUI framework. The library serves as a cross-platform reference for rendering visual content on iOS and macOS. It includes a view implementation guide that covers managing navigation, handling user inputs, and embedding web content. The codebase covers broad capability areas including layout management

maptalks.js is a JavaScript map rendering library and web map interaction framework used to render interactive 2D and 3D geographic data on a web canvas. It functions as a 3D geospatial engine supporting 3DTiles and GLTF formats, a GeoJSON visualization tool, and a spatial analysis library. The project distinguishes itself through high-performance rendering and dynamic geospatial animation, including the ability to simulate traffic flow and execute smooth visual transitions for map elements. It provides comprehensive tools for interactive geometry editing, allowing users to draw and modify ve

SnapKit is a declarative layout library and domain-specific language for managing user interface constraints and view relationships in Swift. It serves as a programmatic framework for positioning and sizing interface elements on iOS and macOS by wrapping native Auto Layout calls in a concise syntax. The library provides a fluent interface that translates high-level descriptive language into imperative layout rules. It differentiates itself through automatic constraint tracking and lifecycle management, allowing for the bulk removal and replacement of positioning rules without manual tracking

A Material design back port of Android's CalendarView

Linaria is a zero-runtime CSS-in-JS library and static CSS generator. It evaluates JavaScript expressions at build time to extract styles from tagged template literals into standalone, static CSS files, removing the need for a runtime style injection engine. The library distinguishes itself by mapping component props to CSS custom properties, enabling dynamic styling and runtime property updates without regenerating stylesheets. It utilizes a build-time evaluation engine to resolve interpolations and a hashing system to generate scoped class names that prevent style collisions. The project c

styled-components is a CSS-in-JS styling library and tool for React components. It provides a cross-platform UI styling API and a dynamic theme management system to maintain consistent design tokens and encapsulate visual logic, preventing global scope conflicts. The library utilizes a unified interface that works across both web environments and native mobile frameworks. It enables the definition of styles using JavaScript and TypeScript template literals, allowing CSS to be bound directly to components. The system supports dynamic prop-based styling, style inheritance, and the creation of

This project is a styling library for Vue that enables component-based design by attaching CSS rules directly to HTML tags or component constructors. It utilizes tagged template literals to encapsulate design logic within JavaScript, allowing developers to define, extend, and manage styles directly alongside component code. The library distinguishes itself through a dynamic style injection engine that evaluates functions against component properties at runtime, ensuring visual output updates in response to data changes. It supports polymorphic rendering, which allows the underlying HTML eleme

This project is a styling library and framework designed for component-based architectures, enabling developers to define and manage visual styles directly within JavaScript or TypeScript. It functions as a styling engine that generates unique class names from style definitions, ensuring encapsulated, predictable, and maintainable visual presentation across applications. By integrating with component logic, it allows for the creation of reusable UI elements with styles defined through template literals or object syntax. The library distinguishes itself through a comprehensive suite of build-t

This project is a technical library and knowledge base for the Qt framework, serving as a C++ GUI programming guide and a resource for cross-platform development. It provides a collection of technical guides, best practices, and instructional materials focused on building applications using the Qt ecosystem. The repository focuses on optimizing application performance and development workflows. It covers architectural patterns for improving build speeds and execution efficiency, including the use of in-memory databases and asynchronous function calls. It also offers specialized guidance on in

High performance, maintainable stylesheets.

LibreSprite is a digital art application for designing precise pixel characters and objects. It functions as a 2D sprite editor, palette-based image editor, and pixel art animation software. The application specializes in creating frame-based pixel art animations using onion skinning and layer management. It also includes a tiled texture creator for producing seamless repeating patterns and textures through a synchronized tiled viewport. The software covers a broader range of game asset pipeline capabilities, including the creation of static pixel art and the management of fixed color palett

css.gg is a collection of visual assets providing a CSS UI icon library and an SVG icon set. It delivers vector icons and glyphs through CSS classes, SVG sprites, and a library of styled components for web interfaces. The project includes a Figma UI asset pack to support the creation of high-fidelity prototypes and interface mockups. These design assets can be exported into external tools for prototyping and layout standardization. The system provides capabilities for embedding vector graphics, integrating typographic symbols, and managing design assets via API or NPM. It also supports the c