novel-app/RuoYi-App/components/ThemePicker.vue

<template>
  <view class="theme-picker">
    <view class="current-theme" @click="showSelector = !showSelector">
      <text>{{ themeStore.getThemeLabel(themeStore.currentTheme) }}</text>
      <uni-icons :type="showSelector ? 'arrowup' : 'arrowdown'" size="16"></uni-icons>
    </view>
    
    <view v-if="showSelector" class="theme-selector">
      <view 
        v-for="theme in themeStore.themeOptions"
        :key="theme.name"
        class="theme-item"
        :class="{ active: theme.name === themeStore.currentTheme }"
        @click="changeTheme(theme.name)"
      >
        <view class="color-preview">
          <view 
            v-for="(color, key) in theme.colors" 
            v-if="key.includes('color')"
            :key="key"
            class="color-block"
            :style="{ backgroundColor: color }"
          ></view>
        </view>
        <text class="theme-label">{{ theme.label }}</text>
      </view>
    </view>
  </view>
</template>

<script setup>
import { ref } from 'vue'
import { useThemeStore } from '@/stores/theme'

const themeStore = useThemeStore()
const showSelector = ref(false)

// 切换主题
const changeTheme = (themeName) => {
  themeStore.setTheme(themeName)
  showSelector.value = false
}
</script>

<style scoped>
.theme-picker {
  position: relative;
  z-index: 100;
}

.current-theme {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background-color: var(--card-bg);
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
}

.theme-selector {
  position: absolute;
  top: 40px;
  right: 0;
  width: 180px;
  background-color: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 10px;
  z-index: 200;
}

.theme-item {
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.3s;
}

.theme-item.active {
  background-color: rgba(42, 92, 170, 0.1);
}

.theme-item:hover {
  background-color: rgba(0,0,0,0.05);
}

.color-preview {
  display: flex;
  height: 20px;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 6px;
}

.color-block {
  flex: 1;
  height: 100%;
}

.theme-label {
  font-size: 13px;
  text-align: center;
  display: block;
}
</style>