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67dc2dad58
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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>
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2025-11-20 21:30:37 +01:00 |
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4b01e92b88
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feat: implement Phase 2 - Core Canvas Engine with layer system
Complete canvas rendering infrastructure and state management:
**Type System (types/)**
- Layer interface with blend modes, opacity, visibility
- Canvas state with zoom, pan, grid, rulers
- Tool types and settings interfaces
- Selection and pointer state types
**State Management (store/)**
- Layer store: CRUD operations, reordering, merging, flattening
- Canvas store: zoom (0.1x-10x), pan, grid, rulers, coordinate conversion
- Tool store: active tool, brush settings (size, opacity, hardness, flow)
- Full Zustand integration with selectors
**Utilities (lib/)**
- Canvas utils: create, clone, resize, load images, draw grid/checkerboard
- General utils: cn, clamp, lerp, distance, snap to grid, debounce, throttle
- Image data handling with error safety
**Components**
- CanvasWrapper: Multi-layer rendering with transformations
- Checkerboard transparency background
- Layer compositing with blend modes and opacity
- Grid overlay support
- Selection visualization
- Mouse wheel zoom (Ctrl+scroll)
- Middle-click or Shift+click panning
- LayersPanel: Interactive layer management
- Visibility toggle with eye icon
- Active layer selection
- Opacity display
- Delete with confirmation
- Sorted by z-order
- EditorLayout: Full editor interface
- Top toolbar with zoom controls (±, fit to screen, percentage)
- Canvas area with full viewport
- Right sidebar for layers panel
- "New Layer" button with auto-naming
**Features Implemented**
✓ Multi-layer canvas with proper z-ordering
✓ Layer visibility, opacity, blend modes
✓ Zoom: 10%-1000% with Ctrl+wheel
✓ Pan: Middle-click or Shift+drag
✓ Grid overlay (toggleable)
✓ Selection rendering
✓ Background color support
✓ Create/delete/duplicate layers
✓ Layer merging and flattening
**Performance**
- Dev server: 451ms startup
- Efficient canvas rendering with transformations
- Debounced/throttled event handlers ready
- Memory-safe image data operations
Ready for Phase 3: History & Undo System
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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2025-11-20 21:20:06 +01:00 |
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