增加词条滚动功能

pages/deepMate/deepMate.vue

@@ -33,11 +33,10 @@
       </view>
 
       <!-- 功能标签栏 -->
-      <view class="function-tabs" v-if="messages.length === 0" scroll-x="true" show-scrollbar="false">
-        <view class="tab-item ">个股诊断</view>
-        <view class="tab-item">市场情绪温度计</view>
-        <view class="tab-item">买卖时机提示</view>
-        <view class="tab-item">个股</view>
+      <view class="function-tabs" v-if="messages.length === 0">
+        <view ref="tabsTrack" class="tabs-track" :style="{ transform: 'translate3d(-' + marqueeOffset + 'px,0,0)' }">
+          <view class="tab-item" v-for="(tab, idx) in marqueeList" :key="idx">{{ tab }}</view>
+        </view>
       </view>
 
       <!-- 特斯拉推荐卡片 -->
@@ -135,7 +134,7 @@
 <script setup>
 const { safeAreaInsets } = uni.getSystemInfoSync();
 
-import { ref, onMounted, nextTick } from "vue";
+import { ref, computed, onMounted, onUnmounted, watch, nextTick } from "vue";
 
 const inputMessage = ref("");
 const isSending = ref(false);
@@ -164,17 +163,96 @@ const hotTopics = ref([
   }
 ]);
 
+// 新增：tabs 列表用于渲染与轮换
+const tabsList = ref(['个股诊断', '市场情绪温度计', '买卖时机提示', '个股']);
+const marqueeList = computed(() => tabsList.value.concat(tabsList.value));
+
+// 用于无缝滚动的引用与状态（兼容小程序/App）
+const tabsTrack = ref(null);
+const marqueeOffset = ref(0);
+let tabsTickId = 0;
+const marqueeSpeed = 0.6; // 像素/帧
+let currentThreshold = 0; // 当前第一个标签的宽度(含右外边距)
+let contentWidthHalf = 0; // 半宽：单份列表的总宽度
+
+// 统一 raf/caf（小程序端可能没有 rAF）
+const hasRAF = typeof requestAnimationFrame === 'function';
+const startFrame = (fn) => hasRAF ? requestAnimationFrame(fn) : setTimeout(fn, 16);
+const stopFrame = (id) => hasRAF ? cancelAnimationFrame(id) : clearTimeout(id);
+
+// 替换测量：测量双列表轨道总宽度的一半，避免频繁 DOM 重排
+const measureContentWidth = (cb) => {
+  const q = uni.createSelectorQuery();
+  q.select('.function-tabs .tabs-track').boundingClientRect();
+  q.exec(res => {
+    const rect = res && res[0];
+    if (rect && rect.width) {
+      contentWidthHalf = rect.width / 2;
+      if (typeof cb === 'function') cb(contentWidthHalf);
+    } else {
+      setTimeout(() => measureContentWidth(cb), 16);
+    }
+  });
+};
+
+// 原 measureFirstThreshold 保留，但不再用于轮播
+const measureFirstThreshold = (cb) => {
+  if (!tabsList.value.length) { currentThreshold = 0; if (cb) cb(0); return; }
+  const q = uni.createSelectorQuery();
+  q.selectAll('.function-tabs .tab-item').boundingClientRect();
+  q.exec(res => {
+    if (res && res[0] && res[0].length) {
+      const firstRect = res[0][0];
+      const marginRightPx = uni.upx2px(20);
+      currentThreshold = (firstRect?.width || 0) + marginRightPx;
+      if (typeof cb === 'function') cb(currentThreshold);
+    } else {
+      // 若暂时无法获取，稍后重试一次
+      setTimeout(() => measureFirstThreshold(cb), 16);
+    }
+  });
+};
+
+const startTabsMarquee = () => {
+  stopFrame(tabsTickId);
+  if (tabsList.value.length <= 1) return; // 单个标签不滚动
+  marqueeOffset.value = 0;
+  nextTick(() => {
+    measureContentWidth(() => {
+      const step = () => {
+        marqueeOffset.value += marqueeSpeed;
+        if (contentWidthHalf > 0 && marqueeOffset.value >= contentWidthHalf) {
+          marqueeOffset.value = 0; // 重置为 0，实现无缝循环
+        }
+        tabsTickId = startFrame(step);
+      };
+      step();
+    });
+  });
+};
+
 // 初始化
 onMounted(() => {
   initUUID();
-  // 如果有历史消息，滚动到底部
+  if (messages.value.length === 0) {
+    nextTick(startTabsMarquee);
+  }
   if (messages.value.length > 0) {
-    nextTick(() => {
-      scrollToBottom();
+    nextTick(() => { scrollToBottom(); });
+  }
 });
+
+// 当消息数量变化，控制滚动是否运行
+watch(messages, (val) => {
+  if (val.length === 0) {
+    nextTick(startTabsMarquee);
+  } else {
+    stopFrame(tabsTickId);
   }
 });
 
+onUnmounted(() => { stopFrame(tabsTickId); });
+
 // 初始化 UUID
 const initUUID = () => {
   let storedUUID = uni.getStorageSync('user_uuid');
@@ -412,10 +490,17 @@ const scrollToTop = () => {
 }
 
 .function-tabs {
-  display: flex;
+  display: block;
+  overflow: hidden;
   margin-bottom: 30rpx;
 }
 
+.tabs-track {
+  display: inline-flex;
+  white-space: nowrap;
+  will-change: transform;
+}
+
 .tab-item {
   padding: 5rpx 20rpx;
   border-radius: 20rpx;