# gss/engine

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2,856 stars · 100 forks · CoffeeScript · MIT

## Links

- GitHub: https://github.com/gss/engine
- Homepage: http://gss.github.io
- awesome-repositories: https://awesome-repositories.com/repository/gss-engine.md

## Description

This project is a CSS layout framework that functions as a responsive UI geometry solver. It replaces traditional static box model calculations with a constraint-based engine that determines element positions and dimensions by evaluating relational rules.

The engine distinguishes itself by using a system of linear equations to resolve geometric conflicts, ensuring that all spatial constraints are satisfied simultaneously. It utilizes a shorthand visual syntax to define these relationships, allowing developers to describe complex alignment and spacing requirements through a declarative language rather than manual positioning.

The framework provides comprehensive tools for managing interface structure, including grid orchestration for defining templates and zones, and coordinate-based alignment for precise positioning. It also incorporates dynamic spacing cushions that automatically adjust margins and gaps based on content, alongside conditional styling mechanisms that adapt layout rules to viewport changes.

## Tags

### User Interface & Experience

- [CSS Layout Systems](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/css-layout-systems.md) — Provides a styling tool that uses a declarative syntax to define spatial relationships and responsive alignment rules between interface components.
- [Constraint Layout Engines](https://awesome-repositories.com/f/user-interface-experience/constraint-layout-engines.md) — Calculates element positions and dimensions by evaluating relational rules between components, ensuring consistent responsive designs without relying on static box model calculations. ([source](https://github.com/gss/engine#readme))
- [Constraint Based Layouts](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/css-layout-systems/constraint-based-layouts.md) — Defines element positions and sizes through relational rules rather than static values to ensure interfaces adapt automatically to content changes.
- [UI Geometry Calculation Tools](https://awesome-repositories.com/f/user-interface-experience/ui-geometry-calculation-tools.md) — Manages complex interface spacing and alignment by dynamically calculating element properties based on defined relational constraints.
- [Declarative Layout Frameworks](https://awesome-repositories.com/f/user-interface-experience/declarative-layout-frameworks.md) — Uses a shorthand visual language to describe complex alignment and spacing requirements between interface elements for cleaner and more maintainable code.
- [Dynamic Alignment Engines](https://awesome-repositories.com/f/user-interface-experience/dynamic-layout-engines/variable-size-content-layout/dynamic-alignment-engines.md) — Positions elements relative to specific coordinates or other element properties to maintain precise spatial alignment across dynamic viewports. ([source](https://github.com/gss/engine/blob/master/CHANGES.md))
- [Flexible Layout Constraints](https://awesome-repositories.com/f/user-interface-experience/element-positioning/flexible-layout-constraints.md) — Manages gaps and margins as variable constraints that automatically adapt to surrounding content to preserve a consistent visual hierarchy.
- [Grid Layout Engines](https://awesome-repositories.com/f/user-interface-experience/grid-layout-engines.md) — Defines structured grid templates with custom gaps and zones to align multiple elements within a container using shorthand visual flow syntax. ([source](https://github.com/gss/engine/blob/master/CHANGES.md))
- [Dynamic Grid Layouts](https://awesome-repositories.com/f/user-interface-experience/grid-layouts/list-layout-arrangements/dynamic-grid-layouts.md) — Organizes multiple interface components into structured templates with flexible gaps and zones that resolve geometric conflicts during the rendering process.
- [Layout Syntax Parsers](https://awesome-repositories.com/f/user-interface-experience/layout-styling-engines/global-layout-defaults/layout-syntax-parsers.md) — Provides a shorthand visual syntax to define horizontal and vertical spacing relationships, simplifying complex alignment requirements and reducing manual positioning. ([source](https://github.com/gss/engine#readme))
- [Spacing Management](https://awesome-repositories.com/f/user-interface-experience/layout-utilities/space-layout-hooks/spacing-management.md) — Manages gaps and margins between elements using flexible cushions that automatically adapt to surrounding content to maintain visual hierarchy. ([source](http://gss.github.io/))
- [Responsive Design Patterns](https://awesome-repositories.com/f/user-interface-experience/responsive-design-patterns.md) — Adjusts component styles and spatial relationships based on viewport size to maintain a consistent visual hierarchy across different device screens.
- [Responsive Layout Styling](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/css-utility-libraries/css-utilities/conditional-style-queries/responsive-layout-styling.md) — Adjusts element properties and layout rules based on viewport size or state changes to ensure responsive behavior across different devices. ([source](http://gss.github.io/))

### Scientific & Mathematical Computing

- [Geometric Constraint Solvers](https://awesome-repositories.com/f/scientific-mathematical-computing/geometric-constraint-solvers.md) — Resolves geometric conflicts by solving systems of linear equations to ensure all layout constraints are satisfied simultaneously without overlapping or breaking the design. ([source](http://gss.github.io/](http://gss.github.io/))
- [Linear System Solvers](https://awesome-repositories.com/f/scientific-mathematical-computing/linear-algebra-routines/distributed-linear-system-solving/linear-system-solvers.md) — Calculates element positions and dimensions by solving systems of simultaneous linear equations to satisfy all defined spatial relationships.

### Software Engineering & Architecture

- [Reactivity Dependency Graphs](https://awesome-repositories.com/f/software-engineering-architecture/reactivity-dependency-graphs.md) — Maintains a directed graph of element relationships to propagate layout updates efficiently whenever viewport sizes or content states change.
- [Syntax Parsing Engines](https://awesome-repositories.com/f/software-engineering-architecture/syntax-parsing-engines.md) — Translates shorthand text strings into internal constraint graphs that define how elements align and maintain distance from one another.