feat: zcatgui Gio parity - 12 new widgets + gesture system
New widgets (12):
- Switch: Toggle switch with animation
- IconButton: Circular icon button (filled/outlined/ghost/tonal)
- Divider: Horizontal/vertical separator with optional label
- Loader: 7 spinner styles (circular/dots/bars/pulse/bounce/ring/square)
- Surface: Elevated container with shadow layers
- Grid: Layout grid with scrolling and selection
- Resize: Draggable resize handle (horizontal/vertical/both)
- AppBar: Application bar (top/bottom) with actions
- NavDrawer: Navigation drawer with items, icons, badges
- Sheet: Side/bottom sliding panel with modal support
- Discloser: Expandable/collapsible container (3 icon styles)
- Selectable: Clickable region with selection modes
Core systems added:
- GestureRecognizer: Tap, double-tap, long-press, drag, swipe
- Velocity tracking and fling detection
- Spring physics for fluid animations
Integration:
- All widgets exported via widgets.zig
- GestureRecognizer exported via zcatgui.zig
- Spring/SpringConfig exported from animation.zig
- Color.withAlpha() method added to style.zig
Stats: 47 widget files, 338+ tests, +5,619 LOC
Full Gio UI parity achieved.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
reugenio
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