# HoloHue

## What This Is

A futuristic, cyberpunk-inspired GUI framework and component library for Rust developers, distributed as a Cargo crate. HoloHue provides a complete application shell — window management, layout system, theming, animations, and sound — plus a rich set of pre-built UI components, all designed for building dashboards, control panels, and monitoring interfaces.

## Core Value

A Rust developer can `cargo add holohue` and immediately have a stunning, animated, cyberpunk-aesthetic GUI with zero design effort — windows, components, sounds, and choreographed animations all work out of the box.

## Requirements

### Validated

(None yet — ship to validate)

### Active

- [ ] Cyberpunk window system with angled/notched corners, glow-line perimeters, semitransparent backgrounds, and optional dot-grid overlay
- [ ] Choreographed animation system with built-in presets: window spawn (expand + light wave + flicker), button click (double blink + glow fade), page transitions (fade out + flicker in), dropdown populating, ambient breathing/ripple/splash effects
- [ ] Subwindow system supporting overlay, edge-docked, and queued row/column positions — devs set defaults and constraints, end users rearrange within bounds
- [ ] Preset theme system with curated cyberpunk themes plus custom theme support via color/accent tokens
- [ ] Full soundscape: ambient background audio plus UI interaction sounds (clicks, hovers, transitions, errors), optional per-app
- [ ] Core component library: buttons, dropdowns, panels, text inputs, labels, toggles, sliders, tables — all with HoloHue styling and animation
- [ ] Dashboard-oriented layout primitives: grids, split panes, resizable panels, status bars
- [ ] Demo application showcasing all components, animations, window system, themes, and sound

### Out of Scope

- Mobile/touch targets — desktop-first, Rust ecosystem
- Rich text editing or code editor components — v2+
- Networking/data layer — HoloHue is presentation only
- Plugin/extension system — v2+
- Community crate publishing — v1 is demo-ready, not release-ready

## Context

HoloHue targets Rust developers building dashboard-style applications: data visualization, system monitors, control panels, admin interfaces. The aesthetic is firmly cyberpunk — think Iron Man HUD meets Cyberpunk 2077 UI — with heavy emphasis on animation choreography and audio feedback.

The preconceived stack is Tauri (Rust backend + webview frontend) with SolidJS and Tailwind for the rendering layer, but a hybrid approach is preferred: Rust core logic with a web-based rendering layer for animation flexibility and CSS capabilities, potentially GPU-accelerated. The final stack decision should balance pure-Rust integration ergonomics with the rich animation/audio capabilities web tech provides.

Anti-aliased rendering is critical — lines, fonts, and UI elements must be super clean. The "glow line" running 6-8px inside the window perimeter is a signature visual element.

v1 success = a working demo app that showcases the full system. Not yet a polished published crate.

## Constraints

- **Distribution**: Must be consumable via `cargo add holohue`
- **Target language**: Rust — API surface must feel idiomatic to Rust developers
- **Rendering quality**: Anti-aliased lines, fonts, and elements are non-negotiable
- **Animation performance**: Choreographed animations must run at 60fps without jank
- **Audio**: SFX system must be optional (opt-out) for devs who don't want it

## Key Decisions

| Decision | Rationale | Outcome |
|----------|-----------|---------|
| Hybrid Rust+web rendering approach | Balances Rust-native integration with web's animation/CSS capabilities | — Pending |
| Tauri as webview bridge (tentative) | Mature Rust+webview integration, but research may surface better options | — Pending |
| SolidJS for frontend (tentative) | Reactive, performant, small bundle — but research should validate | — Pending |
| Preset themes over fully themeable | Maintains strong visual identity while allowing customization | — Pending |
| Demo app as v1 goal | Proves the system works before investing in crate polish/docs | — Pending |

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*Last updated: 2026-02-25 after initialization*