vuetify-extra

Additional components for use with Vuetify 3.

This package contains two components:

• Language (i18n) switcher
• Vuetify theme switcher

Please note that this is my first published packaged. I use it in various of my own projects (including Nuxt and Vitepress). It is still very actively being developed, and will be for a large part of 2023. Updated versions may break your project; update this package with some caution.

Secondary goals of this project were to gain some experience reusing components and with bundlers. I'm very happy to hear if things can be improved upon. Issues, bugs, and feature requests can be submitted via Github.

Installation

You can use this package with your exiting Vuetify 3 (Vue 3) project using your favorite package manager.

npm -i vuetify-extra
pnpm add vuetify-extra
yarn add vuetify-extra

Language Switcher

The language switcher displays a drop down (v-select) containing a list of languages to select from.

Import the component from the package.

import { YSwitchLang } from "vuetify-extra"
import 'vuetify-extra/styles.css'

<YSwitchLang
    :languages="languages"
    variant="solo"
    v-model="$i18n.locale"
/>

Props

Name	Type	Default	Description
languages	array	required	array of languages, see example
prefix-inner	string	undefined	Text to be prefixed before the language name. For example "Select language". A colon will automatically be added when used (e.g. the prefix becomes "Select language: "). Unlike prefix, which styles the text differently, the prefix-inner is part of the actual text.
flag-select-location	"left", "right", "start", "end", "none"	left	Values "left" and "start" both place the flag in front of the language name; "right" places the flag directly after the language name; "end" place the flag at the far right of the selection box, before the caret. To not show a flag, use "none", or any other value.
flag-items-location	"left", "right", "start", "end", "none"	left	Values "left" and "start" both place the flag in front of the language name; "right" places the flag directly after the language name; "end" place the flag at the far right of the selection box. To not show a flags, use "none", or any other value.
round	boolean	false	Circular instead of square flags.
naked	boolean	false	Removes all styling except for the caret. This way you can incorporate it in a v-menu / v-list-item.
value	i18n locale		The current/to be changed locale

Please note that most of Vuetify's v-select (styling) properties can also be specified here and will be passed on to the underlying v-select. For example append-icon, autofocus, bg-color?, clearable, clear-icon, color, density, direction?, disabled, error, error-messages, focused, hide-details?, hide-no-data?, hide-selected, hint, label?, max-errors, menu-icon, messages, open-on-clear, persistent-clear?, persistent-hint, persistent-placeholder, placeholder, prefix, prepend-icon, prepend-inner-icon, readonly, reverse, suffix, and variant.

const languages = [
    {
        code: "en",
        name: "English",
        flagCode: "usa",
    },
    {
        code: "nl",
        name: "Nederlands",
        flagCode: "nl",
    }
]

Slots

None. If a slot is required, then please raise an issue describing the kind of slot that you need.

Translations

None. There are no texts to translate.

Suggested installation

A good approach could be to include the available languages array in the i18n.ts file, as an extra export.

i18n.ts

import { createI18n } from 'vue-i18n'
import messages from '@intlify/unplugin-vue-i18n/messages'

export default createI18n({
    legacy: false,
    locale: 'nl', // Current locale
    messages
})
export const languages = [
    {
        code: "en",
        name: "English",
        flagCode: "usa",
    },
    {
        code: "nl",
        name: "Nederlands",
        flagCode: "nl",
    }
]

And in the component that houses the YSwitchLang:

import { languages } from '../plugins/i18n'
import { YSwitchLang } from "vuetify-extra"
import 'vuetify-extra/styles.css'

Theme Switcher

The theme switcher displays a list of 'style-cards' with swatches for the available Vuetify themes. If no custom themes are defined, the two default Vuetify themes can be selected (light, dark). If custom themes are defined, then the two default Vuetify themes will be hidden.

Props

Name	Type	Default	Description
themes	array	required	array of Vuetify themes
translation	i18n translation		Optional, if omitted uses
title	string	Select theme	Uses this title, if not i18n provided
hide-title	boolean	false	hides the title
value	string		The current/to be changed theme

Slots

Name	Description
title	Title section

Translations

The use of translations is optional. If you use them on your site, you can pass the translation object to this component. The translations object must contain theme.select-theme and an entry for every Vuetify theme. Here's an example YAML translations file:

theme:
  select-theme: Select a theme
  light: Light
  dark: Dark
  DarkChocolat: Dark Chocolat

If a translation is not found, the theme's title is used instead (see Extending the ThemeDefinition below).

Theme setup (vuetify.ts)

Built-in color scheme

When it comes to Vuetify themes, there are two approaches. If you only require the built-in light and dark mode, without any modifications, you don't really need to set-up anything. You can set the default theme in vuetify.ts:

    export default createVuetify({
        theme: {
            defaultTheme: 'dark' // 'dark' or 'light'
        }
    })

Custom and/or multiple color schemes

Add a theme definition for each theme. Here's an example theme definition. It's important that you set dark: true, or dark: false, for dark and light themes, as Vuetify uses that information to add the correct shadings, etc.

Colors that aren't changed are derived from either the dark or light palette, in this example we have a dark mode theme that is the same as the original, but instead uses blue and grey as its primary and secondary color.

The on-colors are automatically calculated by Vuetify based on the contrast ration, but can be overrided here as well.

const DarkTheme: ThemeDefinition = {
    dark: true,
    colors: {
        /* Base colors
         *
        background: '#111111',
        surface: '#212121',
        */
        primary: colors.blue.base,   // CHANGED; Default: #bb86fc
        secondary: colors.grey.base, // CHANGED; Default: #03dac4
        /*
         * Base alert colors
         *
        success: '#4caf50',
        warning: '#fb8a00',
        error: '#cf6679',
        info: '#2194f3',
        */
        /*
         *  The following are the text colors on the respective backgrounds.
         *  These are auto calculated based on contrast.
         *  But can be overriden here.
         *
        'on-background': string
        'on-surface': string
        'on-primary': string
        'on-secondary': string
        'on-success': string
        'on-warning': string
        'on-error': string
        'on-info': string
        */
    },
}

Your themes then must be added to the theme section. Additionally, this is also the place to add variations, if you desire any.

export default createVuetify({
    theme: {
        defaultTheme: 'DarkTheme',
        variations: {
            colors: ['surface', 'primary', 'secondary'],
            lighten: 1,
            darken: 1,
        },
        themes: {
            DarkTheme,
            LightTheme,
            GitHubDark,
        },
    },
})

Extending the ThemeDefinition

The ThemeDefinition is rather constraint, in some cases you will want to expand it. The following are properties that are recognized by the ThemeSwitcher, but you can add your own as well.

interface ExpandedThemeDefinition extends ThemeDefinition {
    title?: string
    backgroundImage?: string
}

Example usage

Inspired by Max Böck. This drawer goes nicely on top of the page. If you use the Vuetify V-App-Bar, the put it below it, as it is fixed to the top of the page. In this case, also add 64px

<template>
    <v-app>
        <v-app-bar></v-app-bar>
        <Transition name="themeswitcher">
            <div
                v-if="showThemeSwitcher"
                class="themeswitcher"
            >
                <YSwitchTheme
                    class="mb-12"
                    :themes="theme.computedThemes.value"
                    :translation="t"
                    v-model="theme.global.name.value"
                />
                <v-btn
                    class="ma-1 themeswitcher__close"
                    icon flat
                    @click="showThemeSwitcher=false"
                >
                    <v-icon>mdi-close</v-icon>
                </v-btn>
            </div>
        </Transition>
        <v-main>
            <v-btn
                class="ma-6"
                @click="showThemeSwitcher=!showThemeSwitcher"
            >
                Open drawer
            </v-btn>
        </v-main>
    </v-app>
</template>

<script setup lang="ts">
    import { ref } from 'vue'
    import { useI18n } from 'vue-i18n'
    import { useTheme } from 'vuetify'
    import { YSwitchTheme } from "vuetify-extra"
    import 'vuetify-extra/styles.css'
    const { t } = useI18n()
    const theme = useTheme()
    const showThemeSwitcher = ref(false)
</script>

<style scoped>
.themeswitcher {
    height: 160px;
    overflow: hidden;
    background: rgba(var(--v-theme-surface-darken-1));
    /* If VAppBar present, add 64px to place it under the VAppBar.
       VAppBar is fixed and has no template slot to place it above the bar. */
    position: relative;
    top: 64px;
}

.themeswitcher__close {
    position: absolute;
    top:0; right:0;
    background-color: transparent;
}

.themeswitcher-enter-active {
    animation: slideY 220ms ease-in-out;
}
.themeswitcher-leave-active {
    animation: slideY 180ms ease-in-out reverse;
}

@keyframes slideY {
  from {
    height: 0;
  }
  to {
    height: 160px;
  }
}
</style>

Unstable (you have been warned)

This package currently uses vue-country-flag-next, but will migrate to vue-flagpack. It is currently in development AND WILL CHANGE.