MorphSlot<T> class

MorphSlot - Widget morphing animations.

Smoothly morphs between different widget states based on signal values. Perfect for play/pause buttons, expand/collapse cards, and shape transitions.

Example:

class PlayerController extends NeuronController {
  late final isPlaying = Signal<bool>(false).bind(this);
  void toggle() => isPlaying.emit(!isPlaying.val);
}

// Play/Pause button morph:
MorphSlot<bool>(
  connect: controller.isPlaying,
  config: MorphConfig.smooth,
  morphBuilder: (context, value) => MorphableWidget(
    child: Icon(value ? Icons.pause : Icons.play_arrow, size: 48),
    decoration: BoxDecoration(
      color: value ? Colors.red : Colors.green,
      shape: BoxShape.circle,
    ),
    size: Size(80, 80),
  ),
)

// Expandable card:
MorphSlot<bool>(
  connect: controller.isExpanded,
  config: MorphConfig.bouncy,
  morphBuilder: (context, expanded) => MorphableWidget(
    child: expanded ? ExpandedContent() : CollapsedContent(),
    decoration: BoxDecoration(
      color: Colors.white,
      borderRadius: BorderRadius.circular(expanded ? 16 : 8),
      boxShadow: [BoxShadow(blurRadius: expanded ? 20 : 8)],
    ),
    size: Size(double.infinity, expanded ? 300 : 80),
  ),
)