Figure focus

Slides adds Focus to figure headings. It enlarges the existing figure, leaving its controls, selected values, camera, and playback state attached to the same element. Exit focus or Escape returns to the figure. Opening focus stops timed slide advance.

Inside a figure, arrow keys and gestures belong to the figure. Slide navigation resumes when focus returns to the slide background. Tab stays within the focused view; Escape closes an open options group before leaving focus.

Add focus to an ordinary page

---
import Shader from '@alkemdotdev/alkemist-components/shader';
import Focus from '@alkemdotdev/alkemist-components/focus';
---

<Shader id="field" frequency={9} angle={24} parameters />
<Focus for="field" />

for names the existing figure ID. An optional label changes the button text. The theme and parameter lab uses this component outside a deck.

The browser Popover API puts the existing element in the top layer without moving it to another document. Focus also implements background inertness, keyboard containment, and return to the invoking control following the WAI dialog pattern. Browsers without the Popover API retain the inline figure and omit the focus button.

Live parameter changes remain local to the current page. Audience windows synchronize slide navigation; arbitrary figure parameters are not mirrored between displays.