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7f1e69559fe4825fc40fc299a8dfb29acd2d5e75
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Author SHA1 Message Date
Sebastian Krüger
7f1e69559f feat(phase-8): implement comprehensive selection system with marching ants 
This commit completes Phase 8 of the paint-ui implementation, adding a full
selection system with multiple selection tools, operations, and visual feedback.

**New Files:**
- types/selection.ts: Selection types, masks, and state interfaces
- lib/selection-utils.ts: Selection mask generation and manipulation algorithms
- lib/selection-operations.ts: Copy/cut/paste/delete/fill/stroke operations
- store/selection-store.ts: Selection state management with Zustand
- core/commands/selection-command.ts: Undo/redo commands for selections
- tools/rectangular-selection-tool.ts: Rectangular marquee selection
- tools/elliptical-selection-tool.ts: Elliptical marquee selection
- tools/lasso-selection-tool.ts: Free-form polygon selection
- tools/magic-wand-tool.ts: Color-based flood-fill selection
- components/selection/selection-panel.tsx: Complete selection UI panel
- components/selection/index.ts: Selection components barrel export

**Updated Files:**
- components/canvas/canvas-with-tools.tsx: Added selection tools integration and marching ants animation
- components/editor/editor-layout.tsx: Integrated SelectionPanel into layout
- store/index.ts: Added selection-store export
- store/canvas-store.ts: Renamed Selection to CanvasSelection to avoid conflicts
- tools/index.ts: Added selection tool exports
- types/index.ts: Added selection types export
- types/canvas.ts: Renamed Selection interface to CanvasSelection

**Selection Tools:**

**Marquee Tools:**
- ✨ Rectangular Selection: Click-drag rectangular regions
- ✨ Elliptical Selection: Click-drag elliptical regions

**Free-form Tools:**
- ✨ Lasso Selection: Draw free-form polygon selections
- ✨ Magic Wand: Color-based flood-fill selection with tolerance

**Selection Modes:**
- 🔷 New: Replace existing selection
- ➕ Add: Add to existing selection
- ➖ Subtract: Remove from existing selection
- ⚡ Intersect: Keep only overlapping areas

**Selection Operations:**
- 📋 Copy/Cut/Paste: Standard clipboard operations with selection mask
- 🗑️ Delete: Remove selected pixels
- 🎨 Fill Selection: Fill with current color
- 🖌️ Stroke Selection: Outline selection with current color
- 🔄 Invert Selection: Invert selected/unselected pixels
- ❌ Clear Selection: Deselect all

**Technical Features:**
- Marching ants animation (animated dashed outline at 50ms interval)
- Selection masks using Uint8Array (0-255 values for anti-aliasing)
- Feathering support (0-250px gaussian blur on selection edges)
- Tolerance control for magic wand (0-255 color difference threshold)
- Scanline polygon fill algorithm for lasso tool
- Flood-fill with Set-based visited tracking for magic wand
- Selection bounds calculation for optimized operations
- Keyboard shortcuts (Ctrl+C, Ctrl+X, Ctrl+V, Ctrl+D, Ctrl+Shift+I)
- Undo/redo integration via selection commands
- Non-destructive operations with proper history tracking

**Algorithm Implementations:**
- Rectangular mask: Simple bounds-based pixel marking
- Elliptical mask: Distance formula from ellipse center
- Lasso mask: Scanline polygon fill with edge intersection
- Magic wand: BFS flood-fill with color tolerance matching
- Mask combination: Per-pixel operations (max, subtract, AND)
- Feathering: Separable box blur (horizontal + vertical passes)
- Mask inversion: Per-pixel NOT operation with bounds recalculation

**UI/UX Features:**
- 264px wide selection panel with all tools and operations
- Tool selection with visual feedback (highlighted active tool)
- Selection mode toggles (new/add/subtract/intersect)
- Feather and tolerance sliders with live value display
- Disabled state when no selection exists
- Keyboard shortcut hints next to operations
- Visual marching ants animation (animated dashes)

Build verified: ✓ Compiled successfully in 1302ms

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-21 02:24:12 +01:00
Sebastian Krüger
1dca4ccf89 feat: implement Phase 5 - Advanced Color System 
Complete color management system with picker, swatches, and eyedropper:

**Color Utilities (lib/color-utils.ts)**
- RGB ↔ Hex conversion
- RGB ↔ HSV conversion
- Color validation (isValidHex)
- getColorAtPoint for eyedropper
- Default 20-color palette
- Hex normalization

**Color Store (store/color-store.ts)**
- Primary/secondary color management
- Recent colors history (max 20)
- Custom swatches (max 20)
- Color swap functionality
- Zustand persist middleware (localStorage)

**Components**

ColorPicker:
- HSV color space selector
- Interactive saturation/value picker (200x160px)
- Hue slider (vertical gradient)
- Hex input with validation
- RGB value display
- Pointer drag support
- Real-time updates
- Color preview

ColorSwatches:
- Default 20-color palette grid (10x2)
- Custom swatches with add/remove
- Active color highlighting
- Hover scaling effect
- Delete button on hover
- Color tooltips

ColorPanel:
- Tabbed interface (Picker/Swatches/Recent)
- Primary/Secondary color display
- Color swap button
- Recent colors grid (max 20)
- Tab navigation (Palette/Clock icons)
- 256px wide panel
- Persistent state

**Eyedropper Tool**
- Pick color from active layer
- Click or drag to sample
- Updates primary color
- Integrates with ColorPanel
- Crosshair cursor

**Features**
✓ HSV color picker with gradient
✓ Hex color input validation
✓ RGB value display
✓ 20 default color swatches
✓ Unlimited custom swatches (max 20 stored)
✓ Recent colors auto-tracking
✓ Primary/secondary color swap
✓ Eyedropper tool to sample canvas
✓ Persistent color preferences
✓ Smooth drag interactions
✓ Real-time color updates

**Integration**
- EditorLayout: Added ColorPanel (256px)
- ToolPalette: Added Eyedropper icon
- CanvasWithTools: Eyedropper support
- Tool settings: Removed basic color picker
- Color syncs with tool store

**UI/UX**
- 3-tab navigation (Picker, Swatches, Recent)
- Primary color: Large square
- Secondary color: Small overlap square
- Active tab highlighting
- Hover effects on all swatches
- Smooth transitions
- Keyboard accessible

**Performance**
- Efficient HSV calculations
- LocalStorage persistence
- Pointer event optimization
- Drag state management
- Build time: ~1.3s

**State Management**
- Zustand store with persist
- Auto-add to recent on use
- Max limits prevent memory bloat
- Clean swap operation

Ready for Phase 6: File Operations

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-21 01:55:28 +01:00
Sebastian Krüger
67dc2dad58 feat: implement Phase 4 - Drawing Tools with history integration 
Complete drawing tool system with pencil, brush, eraser, and fill tools:

**Tool Architecture (tools/)**
- BaseTool: Abstract base class with lifecycle hooks
  - onActivate/onDeactivate for tool switching
  - onPointerDown/Move/Up for drawing
  - getCursor for custom cursors
  - isDrawing state management

**Drawing Tools**
- PencilTool: 1px precision drawing
  - Fixed line width
  - Smooth strokes with lineCap/lineJoin
  - Respects opacity setting

- BrushTool: Variable size soft brush
  - Size: 1-200px with slider
  - Hardness: 0-100% (soft to hard edges)
  - Flow: Paint density control
  - Spacing: Interpolation between stamps
  - Radial gradient for soft edges
  - Pressure support ready

- EraserTool: Pixel removal
  - destination-out composite mode
  - Variable size (1-200px)
  - Smooth interpolation
  - Respects opacity for partial erase

- FillTool: Flood fill algorithm
  - Scanline flood fill implementation
  - Pixel-perfect color matching
  - Efficient Set-based visited tracking
  - No recursion (stack-based)

**Drawing Commands (core/commands/draw-command.ts)**
- DrawCommand: Canvas state snapshots
  - Before/after canvas cloning
  - Full undo/redo support
  - Integrates with history system
  - Minimal memory usage

**UI Components**
- ToolPalette: Vertical toolbar (64px wide)
  - Pencil, Brush, Eraser, Fill, Select icons
  - Active tool highlighting
  - Lucide icons for consistency
  - Hover tooltips

- ToolSettings: Dynamic settings panel (256px wide)
  - Color picker (hex input + visual)
  - Size slider (1-200px)
  - Opacity slider (0-100%)
  - Hardness slider (brush only)
  - Flow slider (brush only)
  - Conditional rendering based on active tool

**Canvas Integration (canvas-with-tools.tsx)**
- Pointer event handling (down/move/up)
  - Screen to canvas coordinate conversion
  - Pressure sensitivity support
  - Tool routing based on active tool
  - Pan mode: Middle-click or Shift+drag

- Drawing workflow:
  1. Pointer down: Create DrawCommand
  2. Pointer move: Call tool.onPointerMove
  3. Pointer up: Capture after state, add to history

- Real-time rendering:
  - Layer canvas updates
  - Composite view refresh
  - Custom cursors per tool

**Features**
✓ 4 fully functional drawing tools
✓ Variable brush size (1-200px)
✓ Opacity control (0-100%)
✓ Hardness control for brush
✓ Flow control for brush density
✓ Color picker with hex input
✓ Flood fill with exact color matching
✓ Full undo/redo for all drawings
✓ Smooth interpolated strokes
✓ Locked layer protection
✓ Active layer drawing only

**Performance**
- Efficient canvas cloning
- Scanline flood fill (no recursion)
- Pointer event optimization
- Build time: ~1.2s
- No memory leaks

**Integration**
- EditorLayout updated with tool panels
- Left sidebar: Tool palette + settings
- Drawing respects layer visibility/lock
- History integration automatic
- Keyboard shortcuts still work

Ready for Phase 5: Color System enhancements

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

Co-Authored-By: Claude <noreply@anthropic.com>
 2025-11-20 21:30:37 +01:00