WasmGPU.createAnnotation.toolkit().onAnnotationsChange¶
Summary¶
WasmGPU.createAnnotation.toolkit().onAnnotationsChange registers a listener for annotation store content updates. The callback receives the latest record snapshot and revision number.
Syntax¶
WasmGPU.createAnnotation.toolkit().onAnnotationsChange(listener: (records: AnnotationRecord[], revision: number) => void): () => void
const unsubscribe = toolkit.onAnnotationsChange(listener);
Parameters¶
| Name | Type | Required | Description |
|---|---|---|---|
listener |
(records: AnnotationRecord[], revision: number) => void |
Yes | Callback invoked whenever annotation records change. |
Returns¶
() => void - Unsubscribe function.
Example¶
const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);
const toolkit = wgpu.createAnnotation.toolkit({ canvas });
const off = toolkit.onAnnotationsChange((records, revision) => {
console.log(revision, records.length);
});
setTimeout(() => off(), 5000);