refactor: 移动端流转树全面复刻 Web 端 childMap 左中右布局

- 废弃递归纵向排版(FlowTree),改用拍平 + childMap 重构
- 横向 scroll-x + 每条主线一个 Row:[左翼]-[中央]-[右翼]
- 中央绝对定位垂直线贯穿;分支按奇偶拆左右翼,横向展开
- 新建 FlowCard(节点卡片)与 FlowBranch(递归分支)

track-uniapp/src/pages/scan/components/FlowBranch.vue

@@ -0,0 +1,92 @@
+<template>
+  <view class="fb-cell">
+    <!-- 左翼：子分支在卡片左侧（继续向左展开） -->
+    <view v-if="side === 'left' && kids.length" class="fb-kids-col">
+      <FlowBranch
+        v-for="k in kids"
+        :key="k.id"
+        :node="k"
+        :side="side"
+        :child-map="childMap"
+        :current-user="currentUser"
+        :current-user-id="currentUserId"
+        :current-username="currentUsername"
+        @view-records="$emit('viewRecords', $event)"
+      />
+    </view>
+    <!-- 左翼：卡片在右侧贴近主干道 -->
+    <FlowCard
+      v-if="side === 'left'"
+      :node="node"
+      @view-records="$emit('viewRecords', $event)"
+    />
+    <!-- 横向连线箭头：左翼→指向中央，右翼←从中央伸出 -->
+    <view class="fb-arrow" :class="'arrow-' + side">{{ side === 'left' ? '→' : '←' }}</view>
+    <!-- 右翼：卡片在左侧贴近主干道 -->
+    <FlowCard
+      v-if="side === 'right'"
+      :node="node"
+      @view-records="$emit('viewRecords', $event)"
+    />
+    <!-- 右翼：子分支在卡片右侧（继续向右展开） -->
+    <view v-if="side === 'right' && kids.length" class="fb-kids-col">
+      <FlowBranch
+        v-for="k in kids"
+        :key="k.id"
+        :node="k"
+        :side="side"
+        :child-map="childMap"
+        :current-user="currentUser"
+        :current-user-id="currentUserId"
+        :current-username="currentUsername"
+        @view-records="$emit('viewRecords', $event)"
+      />
+    </view>
+  </view>
+</template>
+
+<script>
+import FlowCard from "./FlowCard.vue";
+
+export default {
+  name: "FlowBranch",
+  components: { FlowCard },
+  props: {
+    node: { type: Object, required: true },
+    side: { type: String, default: "left" },   // 'left' | 'right'
+    childMap: { type: Object, default: () => ({}) },
+    currentUser: { type: Object, default: null },
+    currentUserId: { type: [String, Number], default: "" },
+    currentUsername: { type: String, default: "" },
+  },
+  emits: ["viewRecords"],
+  computed: {
+    // 该分支节点的直接子节点（进入分支后子子孙孙全部继续作为分支展开，不回主干道）
+    kids() {
+      return this.childMap[this.node.id] || [];
+    },
+  },
+};
+</script>
+
+<style scoped>
+.fb-cell {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  gap: 4px;
+}
+.fb-kids-col {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  margin: 0 4px;
+}
+.fb-arrow {
+  font-size: 14px;
+  font-weight: 700;
+  color: #9ca3af;
+  flex-shrink: 0;
+}
+</style>

track-uniapp/src/pages/scan/components/FlowCard.vue

@@ -0,0 +1,112 @@
+<template>
+  <view class="fc-card" :class="statusColorClass(node.status)">
+    <view class="fc-head">
+      <!-- 主线/分支 标签(仅中央主线显示) -->
+      <text v-if="showBadge" class="fc-badge" :class="isMainNode ? 'fc-badge-main' : 'fc-badge-sub'">{{ isMainNode ? '主线' : '分支' }}</text>
+      <text :class="['fc-status', statusColorClass(node.status)]">{{ statusLabel(node.status) }}</text>
+      <text v-if="node.is_rework" class="fc-rework">⚠返工</text>
+    </view>
+    <text class="fc-name">{{ node.task_name }}</text>
+    <view class="fc-meta">
+      <!-- 在库任务显示"转入在库"，其余显示负责人 -->
+      <text v-if="isWarehouseTask" class="fc-warehouse-in">📥 转入在库: {{ formatUserName(node.assignee_id) }}</text>
+      <text v-else class="fc-assignee">👤 {{ formatUserName(node.assignee_id) || '未分配' }}</text>
+    </view>
+    <view class="fc-bottom">
+      <text class="fc-time">⏰ {{ fmtDate(node.created_at) }}{{ node.completed_at ? '→' + fmtDate(node.completed_at) : '→至今' }}</text>
+      <text v-if="node.records && node.records.length" class="fc-records" @tap.stop="$emit('viewRecords', node)">📋{{ node.records.length }}条 ›</text>
+    </view>
+  </view>
+</template>
+
+<script>
+import { formatUserName as fmtUserName } from "../../../utils/format";
+
+export default {
+  name: "FlowCard",
+  props: {
+    node: { type: Object, required: true },
+    showBadge: { type: Boolean, default: false },
+  },
+  emits: ["viewRecords"],
+  computed: {
+    isMainNode() {
+      return !this.node.parent_task_id
+        || this.node.task_type === "TRANSFER"
+        || this.node.task_type === "RECOVERY";
+    },
+    isWarehouseTask() {
+      const name = String(this.node.task_name || "");
+      return (name.includes("在库") || name.includes("入库")) || this.node.assignee_id === "virtual_warehouse";
+    },
+  },
+  methods: {
+    formatUserName(userId) {
+      return fmtUserName(userId);
+    },
+    statusLabel(s) {
+      const map = { PENDING: "待接收", WIP: "进行中", COMPLETED: "已完成", REJECTED: "已驳回", ARCHIVED: "已入库", OUTBOUND: "已出库" };
+      return map[s] || s;
+    },
+    statusColorClass(s) {
+      switch (s) {
+        case "PENDING": return "s-yellow";
+        case "WIP": return "s-blue";
+        case "COMPLETED": return "s-green";
+        case "REJECTED": return "s-red";
+        case "ARCHIVED": return "s-archived";
+        case "OUTBOUND": return "s-outbound";
+        default: return "s-gray";
+      }
+    },
+    fmtDate(t) {
+      if (!t) return "";
+      const d = new Date(t);
+      const p = (n) => String(n).padStart(2, "0");
+      return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())} ${p(d.getHours())}:${p(d.getMinutes())}`;
+    },
+  },
+};
+</script>
+
+<style scoped>
+.fc-card {
+  background: #fff;
+  border-radius: 10px;
+  border: 1px solid #e5e7eb;
+  border-left-width: 4px;
+  padding: 10px 12px;
+  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
+  width: 168px;
+  flex-shrink: 0;
+}
+.fc-card.s-yellow { border-left-color: #f59e0b; }
+.fc-card.s-blue { border-left-color: #3b82f6; }
+.fc-card.s-green { border-left-color: #22c55e; }
+.fc-card.s-red { border-left-color: #ef4444; }
+.fc-card.s-archived { border-left-color: #8b5cf6; }
+.fc-card.s-outbound { border-left-color: #4f46e5; }
+.fc-card.s-gray { border-left-color: #9ca3af; }
+
+.fc-head { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; flex-wrap: wrap; }
+.fc-badge { font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: 4px; color: #fff; }
+.fc-badge-main { background: #2563eb; }
+.fc-badge-sub { background: #7c3aed; }
+.fc-status { font-size: 11px; font-weight: 700; padding: 1px 8px; border-radius: 10px; }
+.s-yellow .fc-status { background: #fef3c7; color: #b45309; }
+.s-blue .fc-status { background: #dbeafe; color: #1d4ed8; }
+.s-green .fc-status { background: #dcfce7; color: #15803d; }
+.s-red .fc-status { background: #fce4ec; color: #be123c; }
+.s-archived .fc-status { background: #ede9fe; color: #7c3aed; }
+.s-outbound .fc-status { background: #e0e7ff; color: #4338ca; }
+.s-gray .fc-status { background: #f3f4f6; color: #6b7280; }
+.fc-rework { font-size: 10px; background: #ef4444; color: #fff; padding: 1px 5px; border-radius: 4px; font-weight: 700; }
+
+.fc-name { font-size: 13px; font-weight: 700; color: #1f2937; }
+.fc-meta { margin-top: 4px; font-size: 11px; }
+.fc-assignee { color: #4b5563; }
+.fc-warehouse-in { color: #059669; font-weight: 700; }
+.fc-bottom { display: flex; align-items: center; justify-content: space-between; gap: 4px; margin-top: 6px; }
+.fc-time { font-size: 10px; color: #9ca3af; }
+.fc-records { font-size: 10px; color: #2563eb; font-weight: 600; }
+</style>

track-uniapp/src/pages/scan/components/TreeCanvas.vue

@@ -14,38 +14,65 @@
       <text class="zero-icon">📋</text><text class="zero-text">该产品暂无流转记录</text>
     </view>
 
-    <scroll-view v-else scroll-y class="tree-scroll" :style="{ height: scrollHeight + 'px' }">
-      <view class="tree-root">
-        <!-- 递归纵向流转树：根级主线之间用 ↓ 连线，分支由 FlowTree 内部缩进 -->
-        <template v-for="(t, i) in product.task_tree" :key="'rt-' + t.id">
-          <view v-if="i > 0" class="ft-flow-arrow">↓</view>
-          <FlowTree
-            :node="t"
-            :current-user="currentUser"
-            :current-user-id="currentUserId"
-            :current-username="currentUsername"
-            @view-records="$emit('viewRecords', $event)"
-          />
-        </template>
-      </view>
+    <!-- 横向滚动：左右滑动查看分支 -->
+    <scroll-view v-else scroll-x class="tree-scroll" :style="{ height: scrollHeight + 'px' }">
+      <view class="tree-canvas" :style="{ width: canvasWidth + 'px' }">
+        <!-- 每条主线一个 Row：[左翼] - [中央主线卡片] - [右翼] -->
+        <view v-for="mainTask in allMains" :key="mainTask.id" class="flow-row">
+          <!-- 中央主干道垂直线（绝对定位，穿透整行） -->
+          <view class="flow-vline" />
 
-      <!-- 图例 -->
-      <view class="tree-legend">
-        <text class="legend-item legend-main">■ 主线</text>
-        <text class="legend-item legend-sub">□ 分支</text>
-        <text class="legend-item">📥 在库</text>
-        <text class="legend-item">📦 已入库</text>
+          <!-- 左翼：奇数分支（向下/左展开） -->
+          <view class="flow-side flow-left">
+            <FlowBranch
+              v-for="b in leftDirect(mainTask)"
+              :key="b.id"
+              :node="b"
+              side="left"
+              :child-map="childMap"
+              :current-user="currentUser"
+              :current-user-id="currentUserId"
+              :current-username="currentUsername"
+              @view-records="$emit('viewRecords', $event)"
+            />
+          </view>
+
+          <!-- 中央主线卡片 -->
+          <view class="flow-center">
+            <FlowCard
+              :node="mainTask"
+              :show-badge="true"
+              @view-records="$emit('viewRecords', $event)"
+            />
+          </view>
+
+          <!-- 右翼：偶数分支（向右展开） -->
+          <view class="flow-side flow-right">
+            <FlowBranch
+              v-for="b in rightDirect(mainTask)"
+              :key="b.id"
+              :node="b"
+              side="right"
+              :child-map="childMap"
+              :current-user="currentUser"
+              :current-user-id="currentUserId"
+              :current-username="currentUsername"
+              @view-records="$emit('viewRecords', $event)"
+            />
+          </view>
+        </view>
       </view>
     </scroll-view>
   </view>
 </template>
 
 <script>
-import FlowTree from "./FlowTree.vue";
+import FlowCard from "./FlowCard.vue";
+import FlowBranch from "./FlowBranch.vue";
 
 export default {
   name: "TreeCanvas",
-  components: { FlowTree },
+  components: { FlowCard, FlowBranch },
   props: {
     product: { type: Object, required: true },
     currentUser: { type: Object, default: null },
@@ -56,10 +83,55 @@ export default {
   data() {
     return { scrollHeight: 500 };
   },
+  computed: {
+    // 复刻 Web 端：递归拍平 + childMap（parent_task_id → 子数组）
+    childMap() {
+      const flat = [];
+      const walk = (tasks) => { (tasks || []).forEach((t) => { flat.push(t); walk(t.child_tasks); }); };
+      walk(this.product.task_tree);
+      const map = {};
+      flat.forEach((t) => {
+        const pid = t.parent_task_id || "";
+        if (!map[pid]) map[pid] = [];
+        map[pid].push(t);
+      });
+      Object.values(map).forEach((arr) => arr.sort((a, b) => new Date(a.created_at) - new Date(b.created_at)));
+      return map;
+    },
+    // 所有主线任务，按创建时间排序
+    allMains() {
+      const flat = [];
+      const walk = (tasks) => { (tasks || []).forEach((t) => { flat.push(t); walk(t.child_tasks); }); };
+      walk(this.product.task_tree);
+      const mains = flat.filter((t) => this.isMain(t));
+      mains.sort((a, b) => new Date(a.created_at) - new Date(b.created_at));
+      return mains;
+    },
+    // 横向画布宽度：中央 + 左右翼展开空间（scroll-x 用）
+    canvasWidth() {
+      return 900;
+    },
+  },
+  methods: {
+    isMain(t) {
+      return !t.parent_task_id || t.task_type === "TRANSFER" || t.task_type === "RECOVERY";
+    },
+    // 当前主线的直接分支子节点（非主线）
+    branchChildren(mainTask) {
+      return (this.childMap[mainTask.id] || []).filter((c) => !this.isMain(c));
+    },
+    // 左翼（奇偶拆分）
+    leftDirect(mainTask) {
+      return this.branchChildren(mainTask).filter((_, i) => i % 2 === 0);
+    },
+    // 右翼
+    rightDirect(mainTask) {
+      return this.branchChildren(mainTask).filter((_, i) => i % 2 === 1);
+    },
+  },
   mounted() {
     try {
       const info = uni.getSystemInfoSync();
-      // 工具条高度 + 底部安全区预留约 70px，剩余给滚动区
       this.scrollHeight = Math.max((info.windowHeight || 600) - 70, 300);
     } catch (e) {}
   },
@@ -96,25 +168,39 @@ export default {
 .zero-text { font-size: 14px; color: #9ca3af; }
 
 .tree-scroll { flex-shrink: 0; }
-.tree-root { padding: 16px 12px 20px; }
-/* 根级主线之间的向下连线箭头 */
-.ft-flow-arrow {
-  text-align: center;
-  color: #9ca3af;
-  font-size: 16px;
-  font-weight: 700;
-  line-height: 1;
-  margin: 2px 0;
-}
-.tree-legend {
+.tree-canvas { display: flex; flex-direction: column; padding: 16px 12px; }
+
+/* 每条主线一行 */
+.flow-row {
   display: flex;
-  flex-wrap: wrap;
-  gap: 10px;
-  padding: 10px 16px 20px;
-  font-size: 11px;
-  color: #6b7280;
+  flex-direction: row;
+  align-items: center;
+  justify-content: center;
+  position: relative;
+  padding: 20px 0;
 }
-.legend-item { padding: 2px 8px; background: #fff; border-radius: 6px; border: 1px solid #e5e7eb; }
-.legend-main { color: #2563eb; font-weight: 700; }
-.legend-sub { color: #7c3aed; font-weight: 700; }
+/* 中央主干道垂直线（绝对定位，穿透整行） */
+.flow-vline {
+  position: absolute;
+  left: 50%;
+  top: 0;
+  bottom: 0;
+  width: 2px;
+  background: #d1d5db;
+  transform: translateX(-50%);
+  z-index: 0;
+}
+/* 左右翼容器：各占一半，分支从中央向两侧展开 */
+.flow-side {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  z-index: 1;
+  flex: 1;
+  min-width: 0;
+}
+.flow-left { align-items: flex-end; padding-right: 10px; }
+.flow-right { align-items: flex-start; padding-left: 10px; }
+/* 中央卡片 */
+.flow-center { z-index: 2; flex-shrink: 0; }
 </style>