opencloud/.agents/skills/naive-ui-theming/SKILL.md

name, description, metadata

name	description	metadata
naive-ui-theming	Customize and apply themes in Naive UI including dark mode, theme variables, and creating themed components	author version jiaiyan 1.0.0

Naive UI Theming

Learn how to customize themes, apply dark mode, and create themed components in Naive UI.

When to Use

Use this skill when you need to:

• Implement dark/light mode switching
• Customize theme colors and variables
• Create themed components that respond to theme changes
• Access theme variables in your components

Prerequisites

• Basic understanding of Naive UI setup
• Vue 3 Composition API knowledge
• CSS custom properties (CSS variables) understanding

Basic Usage

Theme Switching

Use n-config-provider to control the theme of all descendant components:

<template>
  <n-config-provider :theme="theme">
    <n-card>
      <n-space>
        <n-button @click="theme = darkTheme">
          Dark
        </n-button>
        <n-button @click="theme = null">
          Light
        </n-button>
      </n-space>
    </n-card>
  </n-config-provider>
</template>

<script setup>
import { ref } from 'vue'
import { darkTheme } from 'naive-ui'

const theme = ref(null)
</script>

Using n-element for Theme-Aware Styling

The n-element component allows you to apply theme-aware styles using CSS variables:

<template>
  <n-space vertical>
    <n-space>
      <n-button @click="theme = darkTheme">Dark</n-button>
      <n-button @click="theme = null">Light</n-button>
    </n-space>
    <n-config-provider :theme="theme">
      <n-card>
        <n-el
          tag="span"
          style="
            color: var(--primary-color);
            transition: 0.3s var(--cubic-bezier-ease-in-out);
          "
        >
          I am a Span with theme-aware styling.
        </n-el>
      </n-card>
    </n-config-provider>
  </n-space>
</template>

<script setup>
import { ref } from 'vue'
import { darkTheme } from 'naive-ui'

const theme = ref(null)
</script>

Using Theme Variables with useThemeVars

Access theme variables programmatically using the useThemeVars composable:

<template>
  <div :style="{ color: themeVars.primaryColor }">
    Primary colored text
  </div>
  <pre style="overflow: auto">{{ themeVars }}</pre>
</template>

<script setup>
import { useThemeVars } from 'naive-ui'

const themeVars = useThemeVars()
</script>

API Reference

n-config-provider Theme Props

Property	Type	Default	Description
theme	object | null	null	Theme object (use darkTheme for dark mode, null for light)
theme-overrides	object	-	Custom theme overrides

Available Theme Variables

Common theme variables accessible via useThemeVars():

Variable	Description
primaryColor	Primary color
primaryColorHover	Primary color on hover
primaryColorPressed	Primary color when pressed
successColor	Success state color
warningColor	Warning state color
errorColor	Error state color
infoColor	Info state color
textColorBase	Base text color
textColor1	Primary text color
textColor2	Secondary text color
textColor3	Tertiary text color
borderColor	Border color
borderRadius	Border radius

n-element Props

Property	Type	Default	Description
tag	string	'div'	HTML tag to render

Common Patterns

Persistent Theme with Local Storage

<template>
  <n-config-provider :theme="theme">
    <n-button @click="toggleTheme">
      Toggle Theme
    </n-button>
    <slot />
  </n-config-provider>
</template>

<script setup>
import { ref, onMounted } from 'vue'
import { darkTheme } from 'naive-ui'

const theme = ref(null)

const toggleTheme = () => {
  theme.value = theme.value ? null : darkTheme
  localStorage.setItem('theme', theme.value ? 'dark' : 'light')
}

onMounted(() => {
  const savedTheme = localStorage.getItem('theme')
  theme.value = savedTheme === 'dark' ? darkTheme : null
})
</script>

Custom Theme Overrides

<template>
  <n-config-provider :theme-overrides="themeOverrides">
    <App />
  </n-config-provider>
</template>

<script setup>
import { ref } from 'vue'

const themeOverrides = ref({
  common: {
    primaryColor: '#18a058',
    primaryColorHover: '#36ad6a',
    primaryColorPressed: '#0c7a43'
  },
  Button: {
    textColor: '#18a058'
  }
})
</script>

Theme-Aware Component

<template>
  <n-config-provider :theme="theme">
    <div :style="containerStyle">
      <n-card :style="cardStyle">
        <n-text :depth="1">
          Theme-aware content
        </n-text>
      </n-card>
    </div>
  </n-config-provider>
</template>

<script setup>
import { computed, ref } from 'vue'
import { darkTheme, useThemeVars } from 'naive-ui'

const theme = ref(null)
const themeVars = useThemeVars()

const containerStyle = computed(() => ({
  backgroundColor: themeVars.value.bodyColor,
  padding: '20px',
  transition: 'background-color 0.3s'
}))

const cardStyle = computed(() => ({
  borderColor: themeVars.value.borderColor
}))
</script>

Best Practices

1. Use CSS Variables: Leverage CSS custom properties for smooth theme transitions
2. Wrap at Root Level: Place n-config-provider at the top of your component tree
3. Persist User Preference: Store theme preference in localStorage for better UX
4. Test Both Themes: Always test your components in both light and dark modes
5. Use Transitions: Add CSS transitions for smooth theme switching animations
6. Override Selectively: Only override the theme variables you need to customize

CSS Variable Reference

Naive UI provides numerous CSS variables that automatically update with theme changes:

/* Common theme variables */
--primary-color
--primary-color-hover
--primary-color-pressed
--success-color
--warning-color
--error-color
--info-color

/* Text colors */
--text-color-base
--text-color-1
--text-color-2
--text-color-3

/* Background colors */
--body-color
--card-color
--modal-color

/* Border */
--border-color
--border-radius

/* Animation */
--cubic-bezier-ease-in-out
--cubic-bezier-ease-out
--cubic-bezier-ease-in

Use these variables in your styles for consistent theming:

<template>
  <div class="custom-component">
    Themed content
  </div>
</template>

<style scoped>
.custom-component {
  background-color: var(--card-color);
  border: 1px solid var(--border-color);
  color: var(--text-color-1);
  transition: all 0.3s var(--cubic-bezier-ease-in-out);
}
</style>