xent-kit

Project Xent's platform-neutral standard control protocol, retained Host, and declarative runtime, written in C23. Imperative code and declarative views use the same control descriptors, properties, events, handles, and atomic batches.

Architecture

• xtk_descriptor.h and xtk_catalog.h define the standard control/property/ event vocabulary.
• xtk_batch.h is the mutation wire format. A Host validates, prepares, and atomically commits one batch or leaves the live tree unchanged.
• xtk_host.h is the retained Host ABI. xtk_scene.h and the generated xtk_controls.h provide typed imperative conveniences over it.
• xtk.h builds transient declarative element trees. The reconciler emits only public XtkBatch operations and publishes its new composition after commit.
• xtk_msg.h supplies the bounded message/update/view runtime. Messages drain before one build/reconcile/commit per frame.
• xtk_component.h defines transactional Components and typed, Scene-scoped Providers. Component state belongs to the Host, not the transient tree.

Sibling identity is either positional or keyed. String keys remain useful for diagnostics; xtk_keyed_u64 provides allocation-free scalar identity. Keyed matching is O(n), reuses retained capacity, and emits ordered moves.

Virtualization is a control-neutral retained-region contract: the runtime asks the Host for a viewport and publishes the realized range. ListView, GridView, ItemsView, and custom Components can share that seam without a list-specific Host ABI.

Backends

Backend	Platform	Repo
fluxent	Windows (D3D11/D2D/DComp)	fluxent

Build

xmake
xmake test
xmake run test_xtk_reconcile_txn

The test gate includes Host atomicity, allocation failures, Components, Providers, generated catalog coverage, event routing, virtualization, reconciliation, and static/revisioned regions.

Dependencies

• xent-core

License

0BSD