# P button 37

> Rotating icon button (FAB-style toggle)

A shadcn/ui block from the [@coss](https://coss.com/ui) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/coss/p-button-37).

- Page, with a live preview: https://shadcn.exchange/r/coss/p-button-37
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/coss/p-button-37-light-fbb54b46132d4be4.png
- Registry item: https://coss.com/ui/r/p-button-37.json
- Categories: button
- Listed: 2026-10-13, source last changed 2026-10-13

## Install

```bash
npx shadcn@latest add https://coss.com/ui/r/p-button-37.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- npm packages: `lucide-react`
- Registry items: `@coss/button`

## Files

### `registry/default/particles/p-button-37.tsx`

```tsx
"use client";

import { PlusIcon } from "lucide-react";
import { useState } from "react";
import { Button } from "@/registry/default/ui/button";

export default function Particle() {
  const [open, setOpen] = useState(false);

  return (
    <Button
      aria-expanded={open}
      aria-label={open ? "Close menu" : "Open menu"}
      className="rounded-full before:rounded-full"
      onClick={() => setOpen((prevState) => !prevState)}
      size="icon"
      variant="outline"
    >
      <PlusIcon
        aria-hidden="true"
        className="in-[[aria-expanded=true]]:rotate-[135deg] transition-transform duration-500 ease-[cubic-bezier(0.68,-0.6,0.32,1.6)]"
      />
    </Button>
  );
}
```