Paper

Provide a themed surface with elevation, outline and corner treatment.

This guide covers Material UI Core with the default Emotion engine; extensions and additional demos are explicitly classified.

Use case and business boundary

Elevation is a presentation token, not stacking order or modal behavior.

Native composition and scope

Paper

Preserve native Material UI composition and types; do not substitute JGuang UI/Base UI/Radix APIs. Example entries are not extra components.

Native installation and initialization

npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1

Use native npm and Emotion, not an invented JGuang UI Registry URL. Place examples inside native ThemeProvider; choose CssBaseline or ScopedCssBaseline for the project. Inspect React, existing providers, lockfile and SSR first. Never overwrite files or conceal peer conflicts. This batch verified React 19.2.8; React 18 and below require matching react-is. See the included bilingual setup guide.

Practical native parameters

These selected parameters are not a flattened universal API. Preserve the native declaring owner, slot structure, nullable values and generics.

Runnable native examples

Machine keys select example entries, not universal variant props. Native demo JSX/data stay unchanged; JGuang-authored acceptance fixtures are explicitly labelled.

• Introduction · SimplePaper · upstream native demo
• Elevation · Elevation · upstream native demo
• Variants · Variants · upstream native demo
• Corners · SquareCorners · upstream native demo

Actual usage example

Unmodified pinned native demo; copy its required local helper files together.

import Box from '@mui/material/Box';
import Paper from '@mui/material/Paper';

export default function SimplePaper() {
  return (
    <Box
      sx={{
        display: 'flex',
        flexWrap: 'wrap',
        '& > :not(style)': {
          m: 1,
          width: 128,
          height: 128,
        },
      }}
    >
      <Paper elevation={0} />
      <Paper />
      <Paper elevation={3} />
    </Box>
  );
}

Example dependency boundaries

@mui/material/Box, @mui/material/Paper, @mui/material/Grid, @mui/material/styles, @mui/material/Stack

Direct Icons/System/Utils example imports require their matching 9.4.0 packages. Relative data/helpers are part of the example closure, not extra components. Remote images and simulated operations do not supply a backend.

Pinned upstream API metadata reference

These tables retain the upstream metadata, not a newly inferred generic type system. Conditional generics, inherited props and callback details are defined by the source declarations below. Theme defaults may override metadata defaults.

Paper

import Paper from '@mui/material/Paper';
import { Paper } from '@mui/material';

Native source declarations

Declarations/imports are extracted from pinned source without flattening unions or external inheritance. Original English comments/types are source reference, not a claim of translated upstream prose. Shared types stay in their native packages.

vendor/src/Paper/Paper.d.ts

import * as React from 'react';

import { SxProps } from '@mui/system';

import { OverridableStringUnion } from '@mui/types';

import { Theme } from '../styles';

import { OverrideProps, OverridableComponent, OverridableTypeMap } from '../OverridableComponent';

import { PaperClasses } from './paperClasses';

export interface PaperPropsVariantOverrides {}

export interface PaperOwnProps {
  /**
   * The content of the component.
   */
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<PaperClasses> | undefined;
  /**
   * Shadow depth, corresponds to `dp` in the spec.
   * It accepts values between 0 and 24 inclusive.
   * @default 1
   */
  elevation?: number | undefined;
  /**
   * If `true`, rounded corners are disabled.
   * @default false
   */
  square?: boolean | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
  /**
   * The variant to use.
   * @default 'elevation'
   */
  variant?:
    OverridableStringUnion<'elevation' | 'outlined', PaperPropsVariantOverrides> | undefined;
}

export interface PaperTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'div',
> {
  props: AdditionalProps & PaperOwnProps;
  defaultComponent: RootComponent;
}

declare const Paper: OverridableComponent<PaperTypeMap>;

export interface ExtendPaperTypeMap<TypeMap extends OverridableTypeMap, Keys extends string = ''> {
  props: TypeMap['props'] & Omit<PaperTypeMap['props'], Keys>;
  defaultComponent: TypeMap['defaultComponent'];
}

export type PaperProps<
  RootComponent extends React.ElementType = PaperTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<PaperTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};

Post-install acceptance

Run strict types, production build and real interactions. Check keyboard labels/focus, disabled/error/read-only semantics where natively supported, both themes, narrow screens and reduced motion. Verify callbacks against the real host data; do not declare installation complete from copying a prompt. Initialization fixtures also require server HTML and warning-free hydration.

Source and license

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. Vendor originals and license are preserved. Full original upstream prose remains in vendor/docs and is not represented as fully translated.