# Popover

Host: Radix UI. Path: keyframes. Preset: `scale-fade`. Built against [radix-ui 1.6.7](https://www.npmjs.com/package/radix-ui/v/1.6.7).

Origin resolves from the popper variable first, so the panel grows out of the trigger corner rather than its own centre.

The page this file mirrors mounts the component twice, once with the attribute and once without, so the only difference between the two is the library.

Upstream documentation: [Radix UI documentation](https://www.radix-ui.com/primitives/docs/components/popover)

The same component in other hosts: [Base UI](/base-ui/popover.md), [No library](/native/popover.md).

## Where the attribute goes

The parts this demo composes, and the value each one carries. Everything inside an animated part is that part's content, so the tree stops there.

```text
Popover.Root
  Popover.Trigger
  Popover.Portal
    Popover.Content  data-motion="scale-fade"
```

## How the match works

| Step | Value |
| --- | --- |
| host writes | `data-state, data-side, --radix-popper-transform-origin` |
| easeful matches | `[data-motion][data-side] { transform-origin: <popper origin> }` |
| what runs | `animation + transform-origin from the trigger` |
| you write | `<Popover.Content data-motion="scale-fade" />` |

## Every value that works here

Every value the manifest allows on this host, single presets and the pairs that compose. The first is what this component ships with. Both stages are the same component, so anything that changes between them is the attribute.

| Value | Link |
| --- | --- |
| `scale-fade` | the default |
| `fade` | [fade](/radix/popover#motion=fade) |
| `slide-up` | [slide-up](/radix/popover#motion=slide-up) |
| `fade slide-up` | [fade slide-up](/radix/popover#motion=fade%20slide-up) |
| `scale-fade slide-up` | [scale-fade slide-up](/radix/popover#motion=scale-fade%20slide-up) |

## Source

`apps/docs/components/demos/radix/popover.tsx`

```tsx
"use client"

import { Popover } from "radix-ui"
import type { DemoProps } from "@/components/demos/props"

export function RadixPopover({ motion }: DemoProps) {
  return (
    <Popover.Root>
      <Popover.Trigger className="btn">Open popover</Popover.Trigger>
      <Popover.Portal>
        <Popover.Content className="panel" sideOffset={10} collisionPadding={16} data-motion={motion}>
          <p className="panel__title">Anchored</p>
          <p className="panel__body">
            The origin follows the trigger edge, because Radix publishes a popper transform
            origin and easeful reads it before its own default.
          </p>
        </Popover.Content>
      </Popover.Portal>
    </Popover.Root>
  )
}
```