@aspicio/svelte

Svelte 5 bindings for the Aspicio DXF and PDF viewer — thin veneers over the framework-neutral @aspicio/elements web components, so Svelte, React, Vue, and plain-HTML embeds share one implementation and one look (pixel-identical, verified). Ships as raw .svelte source via the svelte export condition; your bundler compiles it against your own Svelte version (5+). Try the viewer live at aspicio.frontsail.app.

npm install @aspicio/svelte svelte three   # @aspicio/core and @aspicio/elements come along; svelte 5 and three (>=0.184) are peers

• <AspicioEmbed> — batteries included: layer list + interactive preview in one component.
• <AspicioPreview> — the embeddable canvas alone: pan/zoom/rotate (mouse and multi-touch), animated fit, batched WebGL rendering. No chrome. Providing onhoverlayer hit-tests the layer under the cursor.
• <AspicioLayerPanel> — the ready-made layer list, identical to the demo app: header with layer count, visibility checkboxes, effective-color swatches, entity counts, hover-to-highlight, double-click-to-solo (with a banner), and a gesture-hints footer. theme="none" renders a minimal list.

One component

<script>
  import { AspicioEmbed } from "@aspicio/svelte";
  import "@aspicio/svelte/formats/dxf";

  const onloaded = ({ layers, stats }) => console.log(stats.entityCount);
</script>

<!-- src also accepts File | Blob | ArrayBuffer | DXF text -->
<AspicioEmbed srcUrl="/drawing.dxf" style="height: 480px" {onloaded} />

Props: src, srcUrl, panel (left | right | none), theme (aspicio | none), panelStyle, options, showDownload, shortcuts. Callback props: onloaded, onloaderror, onviewerchange, onhoverlayer — payloads arrive unwrapped.

The full viewer

bind:this exposes viewer() — the complete DrawingViewer (fitView, zoomBy, setLayerVisible, pickLayer, view, toSVG, toPNG):

<script>
  import { AspicioEmbed } from "@aspicio/svelte";
  let embed;
</script>

<AspicioEmbed bind:this={embed} srcUrl="/drawing.dxf" />
<button onclick={() => embed.viewer()?.fitView()}>Fit</button>

Custom layout

Compose AspicioPreview + AspicioLayerPanel yourself and hand the panel the viewer from onviewerchange; reverseHighlightLayer wires canvas-hover to the row highlight (the embed does this automatically).

Theming

The internals render in shadow DOM. Theme through --aspicio-* CSS custom properties and ::part() hooks — see the @aspicio/elements README for the token and part list. The theme uses IBM Plex font stacks but never loads webfonts itself; load IBM Plex Sans/Mono in your page for the exact demo look.

Notes

• Changing src / srcUrl loads the new document; the most recently set source wins, and stale in-flight loads are ignored.
• shortcuts keys are scoped to the focused embed (click it first): F fit, +/- zoom, R reset rotation, A show all layers.
• Because the package is uncompiled source, there is no SSR build to mismatch: SvelteKit compiles it for server and client alike, and the viewer is only created in the browser. See apps/svelte-example for a full setup.

Migrating from 0.x

Two breaking changes ship together:

1. Formats are opted into by import. Add import "@aspicio/svelte/formats/dxf"; once — without it every load fails with an error saying exactly that.
2. Format-neutral names dropped their Dxf prefix: <DxfEmbed> / <DxfPreview> / <DxfLayerPanel> → <AspicioEmbed> / <AspicioPreview> / <AspicioLayerPanel>, DxfTheme → AspicioTheme, and DxfViewer → DrawingViewer.