gui/library/hanzogui.mdx

Gui is a style library `@hanzogui/core`, and a separate UI kit `hanzogui`. It
also has an optional optimizing compiler `@hanzogui/static` that generally you
only use through it's bundler plugins like `@hanzogui/vite-plugin` or
`@hanzogui/babel-plugin` for Metro.

Note `hanzogui` is a superset of `@hanzogui/core`, so you can use that in general
for code generation.

For the core style library you can do inline styles:

```tsx
import { View, Text } from '@hanzo/gui'

export default () => (
  <>
    <View backgroundColor="red" />
    <Text fontSize={16} color="$colorToken" />
  </>
)
```

Or you can use `styled()`:

```tsx
import { styled, View } from '@hanzo/gui'

const CustomView = styled(View, {
  margin: 10,

  variants: {
    spaced: {
      true: {
        margin: 20,
      },
    },
  } as const,
})
```

For more on styled, there's a doc `styled.mdx` you can look up. Variants
generally can do a lot:

```tsx
import { View, styled } from '@hanzogui/core'

export const RoundedSquare = styled(View, {
  borderRadius: 20,

  variants: {
    pin: {
      // string values
      top: {
        position: 'absolute',
        top: 0,
      },
    },

    centered: {
      // boolean
      true: {
        alignItems: 'center',
        justifyContent: 'center',
      },
      false: {
        alignItems: 'flex-start',
      },
    },

    size: {
      // functional that take all "size" tokens, so <View size="$sm" /> passes into here
      '...size': (size, { tokens }) => {
        return {
          width: tokens.size[size] ?? size,
          height: tokens.size[size] ?? size,
        }
      },
    },
  } as const,
})
```

You can define your configuration for Gui using `createGui`, and it lets
you define things, there's a readme in the docs called `configuration.mdx` you
can look up for more on this:

```tsx
import { createGui, getConfig } from '@hanzogui/core'

export const config = createGui({
  // act like CSS variables at your root
  tokens: {
    // width="$sm"
    size: { sm: 8, md: 12, lg: 20 },
    // margin="$-sm"
    space: { '-sm': 8 },
    // radius="$none"
    radius: { none: 0, sm: 3 },
    color: { white: '#fff', black: '#000' },
  },

  themes: {
    light: {
      bg: '#f2f2f2',
      color: '#fff',
    },
    dark: {
      bg: '#111',
      color: '#000',
    },
  },

  // media query definitions can be used to style,
  // but also can be used with "groups" to do container queries by size:
  media: {
    sm: { maxWidth: 860 },
    gtSm: { minWidth: 860 + 1 },
    short: { maxHeight: 820 },
    hoverNone: { hover: 'none' },
    touch: { pointer: 'coarse' },
  },

  shorthands: {
    // <View px={20} />
    px: 'paddingHorizontal',
  },

  settings: {
    disableSSR: true, // for client-side apps gains a bit of performance
    allowedStyleValues: 'somewhat-strict-web', // if targeting only web
  },
})

// in other files use this:
console.log(`config is`, getConfig())

// get typescript types on @hanzogui/core imports:
type AppConfig = typeof config
declare module '@hanzogui/core' {
  interface GuiCustomConfig extends AppConfig {}
}
```

Note that Gui maps tokens to style props using some logic, so if you use
`<View margin="$sm />` it looks for
`createGui({ tokens: { space: { sm: 10 } } })`:

```ts
// if not specified it defaults to `space`
export const tokenCategories = {
  radius: {
    borderRadius: true,
    borderTopLeftRadius: true,
    borderTopRightRadius: true,
    borderBottomLeftRadius: true,
    borderBottomRightRadius: true,
    borderStartStartRadius: true,
    borderStartEndRadius: true,
    borderEndStartRadius: true,
    borderEndEndRadius: true,
  },
  size: {
    width: true,
    height: true,
    minWidth: true,
    minHeight: true,
    maxWidth: true,
    maxHeight: true,
    blockSize: true,
    minBlockSize: true,
    maxBlockSize: true,
    inlineSize: true,
    minInlineSize: true,
    maxInlineSize: true,
  },
  zIndex: {
    zIndex: true,
  },
  color: {
    backgroundColor: true,
    borderColor: true,
    borderBlockStartColor: true,
    borderBlockEndColor: true,
    borderBlockColor: true,
    borderBottomColor: true,
    borderInlineColor: true,
    borderInlineStartColor: true,
    borderInlineEndColor: true,
    borderTopColor: true,
    borderLeftColor: true,
    borderRightColor: true,
    borderEndColor: true,
    borderStartColor: true,
    shadowColor: true,
    ...textColors,
    ...(process.env.GUI_TARGET === 'web' && {
      outlineColor: true,
      caretColor: true,
    }),
  },
}
```

Gui themes are special and can do a lot, just know that you can generate
them a few ways.

Simply just like above, or using our new `createThemes` from
`@hanzogui/config/v5`.

It's done like this:

```tsx fileName=themes.ts
import * as Colors from '@hanzogui/colors'
import { createThemes, defaultComponentThemes } from '@hanzogui/config/v5'

const darkPalette = [
  '#050505',
  '#151515',
  '#191919',
  '#232323',
  '#282828',
  '#323232',
  '#424242',
  '#494949',
  '#545454',
  '#626262',
  '#a5a5a5',
  '#fff',
]

const lightPalette = [
  '#fff',
  '#f8f8f8',
  'hsl(0, 0%, 96.3%)',
  'hsl(0, 0%, 94.1%)',
  'hsl(0, 0%, 92.0%)',
  'hsl(0, 0%, 90.0%)',
  'hsl(0, 0%, 88.5%)',
  'hsl(0, 0%, 81.0%)',
  'hsl(0, 0%, 56.1%)',
  'hsl(0, 0%, 50.3%)',
  'hsl(0, 0%, 42.5%)',
  'hsl(0, 0%, 9.0%)',
]

const lightShadows = {
  shadow1: 'rgba(0,0,0,0.04)',
  shadow2: 'rgba(0,0,0,0.08)',
  shadow3: 'rgba(0,0,0,0.16)',
  shadow4: 'rgba(0,0,0,0.24)',
  shadow5: 'rgba(0,0,0,0.32)',
  shadow6: 'rgba(0,0,0,0.4)',
}

const darkShadows = {
  shadow1: 'rgba(0,0,0,0.2)',
  shadow2: 'rgba(0,0,0,0.3)',
  shadow3: 'rgba(0,0,0,0.4)',
  shadow4: 'rgba(0,0,0,0.5)',
  shadow5: 'rgba(0,0,0,0.6)',
  shadow6: 'rgba(0,0,0,0.7)',
}

const extraColors = {
  black1: darkPalette[0],
  black2: darkPalette[1],
  black3: darkPalette[2],
  black4: darkPalette[3],
  black5: darkPalette[4],
  black6: darkPalette[5],
  black7: darkPalette[6],
  black8: darkPalette[7],
  black9: darkPalette[8],
  black10: darkPalette[9],
  black11: darkPalette[10],
  black12: darkPalette[11],
  white1: lightPalette[0],
  white2: lightPalette[1],
  white3: lightPalette[2],
  white4: lightPalette[3],
  white5: lightPalette[4],
  white6: lightPalette[5],
  white7: lightPalette[6],
  white8: lightPalette[7],
  white9: lightPalette[8],
  white10: lightPalette[9],
  white11: lightPalette[10],
  white12: lightPalette[11],
}

const generatedThemes = createThemes({
  componentThemes: defaultComponentThemes,

  base: {
    palette: {
      dark: darkPalette,
      light: lightPalette,
    },

    // for values we don't want being inherited onto sub-themes
    extra: {
      light: {
        ...Colors.blue,
        ...Colors.green,
        ...Colors.red,
        ...Colors.yellow,
        ...lightShadows,
        ...extraColors,
        shadowColor: lightShadows.shadow1,
      },
      dark: {
        ...Colors.blueDark,
        ...Colors.greenDark,
        ...Colors.redDark,
        ...Colors.yellowDark,
        ...darkShadows,
        ...extraColors,
        shadowColor: darkShadows.shadow1,
      },
    },
  },

  // inverse accent theme
  accent: {
    palette: {
      dark: lightPalette,
      light: darkPalette,
    },
  },

  childrenThemes: {
    blue: {
      palette: {
        dark: Object.values(Colors.blueDark),
        light: Object.values(Colors.blue),
      },
    },
    red: {
      palette: {
        dark: Object.values(Colors.redDark),
        light: Object.values(Colors.red),
      },
    },
    yellow: {
      palette: {
        dark: Object.values(Colors.yellowDark),
        light: Object.values(Colors.yellow),
      },
    },
    green: {
      palette: {
        dark: Object.values(Colors.greenDark),
        light: Object.values(Colors.green),
      },
    },
  },
})

export type GuiThemes = typeof generatedThemes

/**
 * This is an optional production optimization: themes JS can get to 20Kb or more.
 * Gui has ~1Kb of logic to hydrate themes from CSS, so you can remove the JS.
 * So long as you server render your Gui CSS, this will save you bundle size:
 */
export const themes: GuiThemes =
  process.env.GUI_ENVIRONMENT === 'client' && process.env.NODE_ENV === 'production'
    ? {}
    : (generatedThemes as any)
```

And it generates a whole bunch of themes for you that are very nice like `light`, `light_accent`, `light_accent_Button`, etc. For more, see the `config-v4.mdx` file in search.