Sebastian Krüger
1d82f60182
This commit completes Phase 9 of the paint-ui implementation, adding transform tools for moving, scaling, and rotating layers with real-time preview. **New Files:** - types/transform.ts: Transform types, state, and matrix interfaces - lib/transform-utils.ts: Transform matrix operations and calculations - store/transform-store.ts: Transform state management with Zustand - core/commands/transform-command.ts: Undo/redo support for transforms - tools/move-tool.ts: Simple layer move tool - tools/free-transform-tool.ts: Advanced transform with handles (scale/rotate/move) - components/transform/transform-panel.tsx: Transform UI panel - components/transform/index.ts: Transform components barrel export **Updated Files:** - components/canvas/canvas-with-tools.tsx: Added transform tools integration - components/editor/editor-layout.tsx: Integrated TransformPanel into layout - store/index.ts: Added transform-store export - tools/index.ts: Added transform tool exports - types/index.ts: Added transform types export **Transform Tools:** **Move Tool:** - ✨ Click-drag to move layers - 📐 Preserves layer dimensions - ⌨️ Arrow key support (planned) **Free Transform Tool:** - 🔲 8 scale handles (corners + edges) - 🔄 Rotate handle above center - 📏 Constrain proportions toggle - 🎯 Visual handle feedback - 🖱️ Cursor changes per handle **Transform Operations:** - **Move**: Translate layer position (X, Y offset) - **Scale**: Resize with handles (independent X/Y or constrained) - **Rotate**: Rotate around center point (degrees) - **Proportional Scaling**: Lock aspect ratio with toggle **Technical Features:** - Transform matrix operations (2D affine transformations) - Matrix multiplication for combined transforms - Handle position calculation with rotation - Transform bounds calculation (AABB of rotated corners) - Real-time transform preview on canvas - Non-destructive until apply - Undo/redo integration via TransformCommand - Apply/Cancel actions with state restoration **Matrix Mathematics:** - Identity matrix: [1 0 0 1 0 0] - Translation matrix: [1 0 0 1 tx ty] - Scale matrix: [sx 0 0 sy 0 0] - Rotation matrix: [cos -sin sin cos 0 0] - Matrix composition via multiplication - Point transformation: [x' y'] = M × [x y] **Transform Algorithm:** 1. Translate to origin (center of bounds) 2. Apply scale transformation 3. Apply rotation transformation 4. Translate back and apply position offset 5. Render transformed canvas to new canvas **Handle Types:** - **Corner handles** (4): Scale in both directions - **Edge handles** (4): Scale in single direction - **Rotate handle** (1): Rotate around center **Transform State:** ```typescript { x: number; // Translation X y: number; // Translation Y scaleX: number; // Scale factor X (1 = 100%) scaleY: number; // Scale factor Y (1 = 100%) rotation: number; // Rotation in degrees skewX: number; // Skew X (future) skewY: number; // Skew Y (future) } ``` **UI/UX Features:** - 264px wide transform panel with tool selection - Real-time transform state display (position, scale, rotation) - Constrain proportions toggle with lock/unlock icon - Apply/Cancel buttons with visual feedback - Tool-specific instructions - Disabled state when no unlocked layer selected - Keyboard shortcuts planned (Enter to apply, Esc to cancel) **Cursor Feedback:** - `move`: When dragging inside bounds - `nwse-resize`: Top-left/bottom-right corners - `nesw-resize`: Top-right/bottom-left corners - `ns-resize`: Top/bottom edges - `ew-resize`: Left/right edges - `crosshair`: Rotate handle - Cursor rotation adjustment (planned) Build verified: ✓ Compiled successfully in 1374ms 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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
- Implementation Plan - Detailed roadmap and architecture
- Contributing Guide - How to contribute (coming soon)
- API Documentation - Plugin API reference (coming soon)
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