drip_flutter 0.2.0-alpha

Flutter render layer for DRIP — direct RenderObject binding with zero widget rebuilds.

drip_flutter

Flutter render layer for the DRIP framework.

Provides direct RenderObject bindings that update the UI with zero widget rebuilds, bypassing the standard Flutter build() cycle for state-driven property updates.

Features

• Direct Binding: Connect DripState<T> directly to RenderObject properties.
• Zero Rebuilds: High-performance UI updates that skip the Widget → Element → RenderObject traversal.
• Precision Rendering: Optimized for high-frequency updates (e.g., animations, grids, live data).

Usage

final label = dripState('Hello');

// In build():
DripText(label, style: TextStyle(fontSize: 24));

// Elsewhere:
label.write('World'); // Updates RenderParagraph directly, NO build() calls.

Architecture Invariants

drip_flutter adheres to the following core invariants:

1. Invariant 2: Zero setState(): No setState() calls are used in the binding path.
2. Invariant 7: Binding Lifecycle: All bindings are synchronously deregistered when the widget is unmounted.

Benchmarking

To verify the zero-rebuild guarantee, run the apps/demo_grid application:

1. Run the app in profile mode: flutter run --profile
2. Open Flutter DevTools → Performance tab.
3. Enable "Track widget builds".
4. Observe: The 1000 DripText cells update every 16ms, but the "Widget build events" count remains static.

---

Part of the DRIP Framework.