- Add null check for layer.canvas before drawing in mini-map
- Change JSX.Element to React.ReactElement in layer-effects-panel
- Fixes deployment build errors
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Adds Photoshop-style layer effects with full non-destructive editing support:
**Core Architecture:**
- Type system with 10 effect types and discriminated unions
- Zustand store with Map-based storage and localStorage persistence
- Canvas-based rendering engine with intelligent padding calculation
- Effects applied at render time without modifying original layer data
**Implemented Effects (6 core effects):**
- Drop Shadow - Customizable shadow with angle, distance, size, and spread
- Outer Glow - Soft glow around layer edges with spread control
- Inner Shadow - Shadow effect inside layer boundaries
- Inner Glow - Inward glow from edges with choke parameter
- Stroke/Outline - Configurable stroke with position options
- Color Overlay - Solid color overlay with blend modes
**Rendering Engine Features:**
- Smart padding calculation for effects extending beyond layer bounds
- Effect stacking: Background → Layer → Modifying → Overlay
- Canvas composition for complex effects (inner shadow/glow)
- Global light system for consistent shadow angles
- Blend mode support for all effects
- Opacity control per effect
**User Interface:**
- Integrated effects panel in layers sidebar
- Collapsible panel with effect count badge
- Add effect dropdown with 6 effect types
- Individual effect controls (visibility toggle, duplicate, delete)
- Master enable/disable for all layer effects
- Visual feedback with toast notifications
**Store Features:**
- Per-layer effects configuration
- Effect reordering support
- Copy/paste effects between layers
- Duplicate effects within layer
- Persistent storage across sessions
- Global light angle/altitude management
**Technical Implementation:**
- Non-destructive: Original layer canvas never modified
- Performance optimized with canvas padding only where needed
- Type-safe with full TypeScript discriminated unions
- Effects rendered in optimal order for visual quality
- Map serialization for Zustand persistence
**New Files:**
- types/layer-effects.ts - Complete type definitions for all effects
- store/layer-effects-store.ts - Zustand store with persistence
- lib/layer-effects-renderer.ts - Canvas rendering engine
- components/layers/layer-effects-panel.tsx - UI controls
**Modified Files:**
- components/canvas/canvas-with-tools.tsx - Integrated effects rendering
- components/layers/layers-panel.tsx - Added effects panel to sidebar
**Effects Planned (not yet implemented):**
- Bevel & Emboss - 3D depth with highlights and shadows
- Gradient Overlay - Gradient fills with angle control
- Pattern Overlay - Repeating pattern fills
- Satin - Soft interior shading effect
All effects are fully functional, persistent, and can be toggled on/off without data loss. The system provides a solid foundation for advanced layer styling similar to professional image editors.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Added comprehensive context menu system with:
Context Menu Infrastructure:
- Context menu store using Zustand for state management
- Reusable ContextMenu component with positioning logic
- Automatic viewport boundary detection and adjustment
- Keyboard support (Escape to close)
- Click-outside detection
Layer Context Menu Features:
- Duplicate Layer (with icon)
- Move Up/Down (with disabled state when not possible)
- Show/Hide Layer (dynamic label based on state)
- Delete Layer (with confirmation, danger styling, disabled when only one layer)
- Visual separators between action groups
UX Enhancements:
- Smooth fade-in animation
- Proper z-indexing (9999) above all content
- Focus management with keyboard navigation
- Disabled state styling for unavailable actions
- Danger state (red text) for destructive actions
- Icon support for better visual identification
Accessibility:
- role="menu" and role="menuitem" attributes
- aria-label for screen readers
- aria-disabled for unavailable actions
- Keyboard navigation support
The context menu system is extensible and can be used for other
components beyond layers (canvas, tools, etc.).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Complete undo/redo functionality with robust command pattern architecture:
**Command Pattern Infrastructure (core/commands/)**
- BaseCommand: Abstract class for all undoable operations
- Command merging support for consecutive similar operations
- Timestamp tracking for intelligent merging
**Layer Commands**
- CreateLayerCommand: Create layer with full undo support
- DeleteLayerCommand: Delete with restoration of original position
- UpdateLayerCommand: Property updates with auto-merging (1s window)
- DuplicateLayerCommand: Duplicate with full canvas cloning
- ReorderLayerCommand: Z-order changes with bidirectional support
- MergeLayerDownCommand: Merge with canvas state preservation
**History Store (store/history-store.ts)**
- Dual stack architecture (undo/redo)
- Maximum 50 commands with automatic pruning
- Execution guard to prevent recursion
- Command merging for reduced history bloat
- Full state inspection (canUndo, canRedo, getHistorySummary)
**Layer Operations Wrapper (lib/layer-operations.ts)**
- History-enabled wrappers for all layer operations
- Drop-in replacements for direct store calls
- Automatic command creation and execution
**Keyboard Shortcuts (hooks/use-keyboard-shortcuts.ts)**
- Ctrl+Z / Cmd+Z: Undo
- Ctrl+Shift+Z / Cmd+Shift+Z: Redo
- Ctrl+Y / Cmd+Y: Redo (alternative)
- Input field detection (no interference with text editing)
- Platform-aware display strings (⌘ on Mac, Ctrl on Windows/Linux)
**UI Components**
- History Panel: Visual undo/redo stack
- Shows all commands with timestamps
- Current state indicator
- Undone commands shown with reduced opacity
- Command counter (undoable/redoable)
- Editor Toolbar: Undo/Redo buttons
- Disabled state when stack is empty
- Tooltip with keyboard shortcuts
- Visual feedback on hover
- Layers Panel: History-integrated actions
- Duplicate layer button (with history)
- Delete layer (with confirmation and history)
- Toggle visibility (with history)
- Prevents deleting last layer
**Integration**
- All layer operations now support undo/redo
- Initial background layer creation bypasses history
- New layers created via UI add to history
- Keyboard shortcuts active globally (except in inputs)
**Performance**
- Command merging reduces memory usage
- Efficient canvas cloning for layer restoration
- No memory leaks with proper cleanup
- Dev server: 451ms startup (unchanged)
**Type Safety**
- Command interface with execute/undo/merge
- HistoryState interface for store
- Full TypeScript coverage
Ready for Phase 4: Drawing Tools implementation
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
