Sebastian Krüger c97ec454f7 feat: add comprehensive Filters & Adjustments dialog with live preview
Implements professional image filter system with real-time preview:

**Adjustments Dialog** (`components/modals/adjustments-dialog.tsx`):
- Live preview canvas (max 400x400px) with real-time filter updates
- Organized filter categories: Color Adjustments, Filters, Effects
- 10 filter types with adjustable parameters:
  - **Brightness**: -100 to +100 adjustment
  - **Contrast**: -100 to +100 adjustment
  - **Hue/Saturation**: Hue rotation (±180°), Saturation (±100%), Lightness (±100%)
  - **Blur**: Gaussian blur with radius 1-50px
  - **Sharpen**: Amount 0-100%
  - **Invert**: One-click color inversion
  - **Grayscale**: Convert to monochrome
  - **Sepia**: Vintage sepia tone effect
  - **Threshold**: Binary black/white with adjustable threshold
  - **Posterize**: Reduce colors to 2-256 levels
- Slider controls for all adjustable parameters
- Reset button to restore default values
- Apply/Cancel actions with undo support
- Uses FilterCommand for history integration

**Image Menu** (`components/editor/image-menu.tsx`):
- New "Image" menu in header bar next to "File"
- "Filters & Adjustments..." menu item opens dialog
- Organized location for image-related operations
- Extensible for future image operations

**Integration**:
- Added Image menu to editor layout header
- Positioned between title and controls
- Keyboard-accessible with proper ARIA labels

**Technical Features**:
- Async filter application using Web Workers for large images
- Non-destructive editing with undo/redo support
- Real-time preview updates as sliders adjust
- FilterCommand integration for history
- Canvas cloning for before/after states
- Optimized preview rendering (scaled to 400px max)

**User Experience**:
- Modal dialog with backdrop
- Sidebar filter list with hover states
- Large preview area showing filter results
- Smooth slider interactions
- Instant visual feedback
- Professional Photoshop-like interface

All filters tested and working with undo/redo support.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-21 19:36:38 +01:00

Paint UI

A modern, browser-based image editor built with Next.js 16 and Tailwind CSS 4. Inspired by miniPaint, reimagined for the modern web.

Features (Planned)

  • 🎨 Multi-layer Canvas - Professional layer system with blend modes
  • 🖌️ Drawing Tools - Pencil, brush, eraser, fill, and selection tools
  • Image Effects - 50+ filters and effects (blur, sharpen, color adjustments)
  • 📝 Text Tool - Add text with web fonts
  • 🔄 Undo/Redo - Full history system
  • 💾 File Support - Open/save PNG, JPG, WEBP, GIF, and project files
  • 🎭 Dark Mode - Beautiful dark and light themes
  • ⌨️ Keyboard Shortcuts - Power user friendly
  • 📱 Responsive - Works on desktop, tablet, and mobile

Tech Stack

  • Framework: Next.js 16 (App Router)
  • UI: React 19 + TypeScript
  • Styling: Tailwind CSS 4
  • Components: Radix UI / Shadcn
  • State: Zustand
  • Canvas: HTML5 Canvas API + Web Workers

Getting Started

Prerequisites

  • Node.js 20+
  • pnpm 9+

Installation

# Clone repository
git clone ssh://git@dev.pivoine.art:2222/valknar/paint-ui.git
cd paint-ui

# Install dependencies
pnpm install

# Run development server
pnpm dev

Open http://localhost:3000 in your browser.

Documentation

Inspiration

This project is inspired by miniPaint, an excellent open-source image editor. While paint-ui is a complete rewrite with modern technologies, we aim to preserve the powerful capabilities that make miniPaint great.

License

MIT

Author

valknar

Repository

https://dev.pivoine.art/valknar/paint-ui

Description
No description provided
Readme 687 KiB
Languages
TypeScript 98.2%
CSS 1.6%
Dockerfile 0.2%