refa: vertical video page (#328)

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/video/detail/reply/controller.dart

@@ -6,8 +6,11 @@ import 'package:PiliPlus/http/reply.dart';
 import 'package:PiliPlus/utils/global_data.dart';
 import 'package:PiliPlus/utils/id_utils.dart';
 import 'package:fixnum/fixnum.dart' as $fixnum;
+import 'package:flutter/material.dart';
+import 'package:get/get_state_manager/src/rx_flutter/rx_ticket_provider_mixin.dart';
 
-class VideoReplyController extends ReplyController {
+class VideoReplyController extends ReplyController
+    with GetTickerProviderStateMixin {
   VideoReplyController({required this.aid});
   // 视频aid 请求时使用的oid
   int aid;
@@ -15,6 +18,25 @@ class VideoReplyController extends ReplyController {
   @override
   dynamic get sourceId => IdUtils.av2bv(aid);
 
+  bool _isFabVisible = true;
+  late final AnimationController fabAnimationCtr = AnimationController(
+      vsync: this, duration: const Duration(milliseconds: 100))
+    ..forward();
+
+  void showFab() {
+    if (!_isFabVisible) {
+      _isFabVisible = true;
+      fabAnimationCtr.forward();
+    }
+  }
+
+  void hideFab() {
+    if (_isFabVisible) {
+      _isFabVisible = false;
+      fabAnimationCtr.reverse();
+    }
+  }
+
   @override
   Future<LoadingState> customGetData() => GlobalData().grpcReply
       ? ReplyHttp.replyListGrpc(
@@ -34,4 +56,10 @@ class VideoReplyController extends ReplyController {
           page: currentPage,
           antiGoodsReply: antiGoodsReply,
         );
+
+  @override
+  void onClose() {
+    fabAnimationCtr.dispose();
+    super.onClose();
+  }
 }