feat(live): 优化礼物弹窗支持指定用户赠送

- 新增 showHeader 参数控制是否显示用户选择头部
- 新增 targetUserId 参数用于预设礼物接收用户
- 优化礼物弹窗逻辑，支持直接向指定用户赠送礼物
- 在主播展示页面增加向主播或观众赠送礼物的功能入口
- 修复未选择用户时的提示逻辑，避免重复提醒
- 重构 _showGiftPopupForUser 方法统一处理礼物弹窗展示逻辑

lib/widget/live/live_gift_popup.dart

@@ -17,12 +17,16 @@ class LiveGiftPopup extends StatefulWidget {
     required this.giftNum,
     required this.giftList,
     required this.changeActive,
+    this.showHeader = true,
+    this.targetUserId,
   });
 
   final ValueNotifier<int?> activeGift;
   final ValueNotifier<int> giftNum;
   final List<dynamic> giftList; // 支持 List<Map> 或 List<GiftProductModel>
   final void Function(int) changeActive;
+  final bool showHeader; // 是否显示头部（用户选择部分）
+  final String? targetUserId; // 预设的目标用户ID
 
   @override
   State<LiveGiftPopup> createState() => _LiveGiftPopupState();
@@ -35,6 +39,10 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
   @override
   void initState() {
     super.initState();
+    // 如果传入了目标用户ID，直接设置
+    if (widget.targetUserId != null) {
+      _selectedUserId = widget.targetUserId;
+    }
     // 默认选择第一个礼物
     if (widget.giftList.isNotEmpty && widget.activeGift.value == null) {
       widget.activeGift.value = 0;
@@ -65,9 +73,11 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
       return;
     }
 
-    // 检查是否选中了接收用户
+    // 检查是否选中了接收用户（如果showHeader为false，则必须有targetUserId）
     if (_selectedUserId == null || _selectedUserId!.isEmpty) {
-      SmartDialog.showToast('请先选择接收礼物的用户');
+      if (widget.showHeader) {
+        SmartDialog.showToast('请先选择接收礼物的用户');
+      }
       return;
     }
 
@@ -110,7 +120,7 @@ class _LiveGiftPopupState extends State<LiveGiftPopup> {
         height: 363.w,
         child: Column(
           children: [
-            _buildHeader(),
+            if (widget.showHeader) _buildHeader(),
             Expanded(
               child: Container(
                 decoration: BoxDecoration(

lib/widget/live/live_room_anchor_showcase.dart

@@ -4,6 +4,7 @@ import 'package:dating_touchme_app/extension/ex_widget.dart';
 import 'package:dating_touchme_app/generated/assets.dart';
 import 'package:dating_touchme_app/model/rtc/rtc_channel_detail.dart';
 import 'package:dating_touchme_app/rtc/rtc_manager.dart';
+import 'package:dating_touchme_app/widget/live/live_gift_popup.dart';
 import 'package:dating_touchme_app/widget/live/live_room_guest_list_dialog.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
@@ -69,11 +70,20 @@ class _LiveRoomAnchorShowcaseState extends State<LiveRoomAnchorShowcase> {
                           color: const Color.fromRGBO(0, 0, 0, .3),
                         ),
                         child: Center(
-                          child: Image.asset(
-                            Assets.imagesGiftIcon,
-                            width: 19.w,
-                            height: 19.w,
-                          ),
+                          child:
+                              Image.asset(
+                                Assets.imagesGiftIcon,
+                                width: 19.w,
+                                height: 19.w,
+                              ).onTap(() {
+                                final anchorInfo = _roomController
+                                    .rtcChannelDetail
+                                    .value
+                                    ?.anchorInfo;
+                                if (anchorInfo != null) {
+                                  _showGiftPopupForUser(anchorInfo);
+                                }
+                              }),
                         ),
                       ),
                     ),
@@ -221,11 +231,14 @@ class _LiveRoomAnchorShowcaseState extends State<LiveRoomAnchorShowcase> {
                             ),
                           ),
                           child: Center(
-                            child: Image.asset(
-                              Assets.imagesGiftIcon,
-                              width: 19.w,
-                              height: 19.w,
-                            ),
+                            child:
+                                Image.asset(
+                                  Assets.imagesGiftIcon,
+                                  width: 19.w,
+                                  height: 19.w,
+                                ).onTap(() {
+                                  _showGiftPopupForUser(userInfo);
+                                }),
                           ),
                         ),
                       ),
@@ -341,4 +354,49 @@ class _LiveRoomAnchorShowcaseState extends State<LiveRoomAnchorShowcase> {
       },
     );
   }
+
+  void _showGiftPopupForUser(RtcSeatUserInfo? userInfo) {
+    if (userInfo == null) {
+      return;
+    }
+
+    // 获取目标用户ID（优先使用userId，如果没有则使用miId）
+    final targetUserId = userInfo.userId.isNotEmpty
+        ? userInfo.userId
+        : userInfo.miId.isNotEmpty
+        ? userInfo.miId
+        : null;
+
+    if (targetUserId == null) {
+      SmartDialog.showToast('用户ID不存在');
+      return;
+    }
+
+    // 创建必要的 ValueNotifier
+    final activeGift = ValueNotifier<int?>(null);
+    final giftNum = ValueNotifier<int>(1);
+
+    SmartDialog.show(
+      alignment: Alignment.bottomCenter,
+      maskColor: Colors.black.withOpacity(0.5),
+      builder: (context) {
+        return Obx(() {
+          // 获取礼物列表
+          final giftProducts = _roomController.giftProducts;
+          final giftList = giftProducts.toList();
+
+          return LiveGiftPopup(
+            activeGift: activeGift,
+            giftNum: giftNum,
+            giftList: giftList,
+            changeActive: (index) {
+              activeGift.value = index;
+            },
+            showHeader: false, // 不显示头部
+            targetUserId: targetUserId, // 设置目标用户ID
+          );
+        });
+      },
+    );
+  }
 }