Export template source from 1a4fa8f940f1ce3bd18662c28f1e9e9ca452e6cd:quixos-instance/packages/web-studio-canvas-runtime

src/canvas.impl.ts

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+import {
+  objectRef,
+  type QxObjectRef,
+  type RuntimeContext,
+} from "@quixos/camino-package-runtime";
+
+export type PlacementInput = {
+  canvas_id: QxObjectRef;
+  subject_id: QxObjectRef;
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  z: number;
+};
+
+const finiteNumber = (value: unknown, fallback: number) =>
+  typeof value === "number" && Number.isFinite(value) ? value : fallback;
+
+const objectId = (value: unknown, field: string) => {
+  try {
+    return objectRef(value as QxObjectRef);
+  } catch {
+    throw new Error(`${field} must be a managed object reference`);
+  }
+};
+
+export const normalizePlacementInput = (
+  input: Record<string, unknown>,
+): PlacementInput => ({
+  canvas_id: objectId(input.canvas_id, "canvas_id"),
+  subject_id: objectId(input.subject_id, "subject_id"),
+  x: finiteNumber(input.x, 0),
+  y: finiteNumber(input.y, 0),
+  width: Math.max(220, finiteNumber(input.width, 420)),
+  height: Math.max(150, finiteNumber(input.height, 320)),
+  z: Math.trunc(finiteNumber(input.z, 0)),
+});
+
+export const createCanvas = (context: RuntimeContext) =>
+  objectRef(context.objectId);
+
+export const createPlacement = async (context: RuntimeContext) => {
+  const input = normalizePlacementInput(context.input);
+  await Promise.all([
+    context.state<{ x: number; y: number }>("port:web-studio-placement-constructor:position")
+      .set({ x: input.x, y: input.y }),
+    context.state<{ width: number; height: number }>("port:web-studio-placement-constructor:size")
+      .set({ width: input.width, height: input.height }),
+    context.state<number>("port:web-studio-placement-constructor:z").set(input.z),
+  ]);
+  await context.edge("port:web-studio-placement-constructor:subject").connect(input.subject_id);
+  await context.edge("port:web-studio-placement-constructor:canvas").connect(input.canvas_id);
+  return objectRef(context.objectId);
+};

src/server.ts

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+import { servePackageRuntime } from "@quixos/camino-package-runtime";
+import { createCanvas, createPlacement } from "./canvas.impl.js";
+
+servePackageRuntime({
+  packageRevisionId: "package:org.quixos.web-studio:canvas-runtime@1",
+  exports: {
+    "export:org.quixos.web-studio.canvas-runtime:create-canvas": createCanvas,
+    "export:org.quixos.web-studio.canvas-runtime:create-placement": createPlacement,
+  },
+});