feat: #169 添加成都双流机场次要看板

CRSim.ScreenSimulator/ViewModels/ChengduShuangliuAirport/SecondaryScreenViewModel.cs

@@ -0,0 +1,16 @@
+using CRSim.Core.Models;
+using CRSim.Core.Services;
+namespace CRSim.ScreenSimulator.ViewModels.ChengduShuangliuAirport
+{
+    public class SecondaryScreenViewModel : ScreenViewModel
+    {
+        public SecondaryScreenViewModel(ITimeService timeService, ISettingsService settingsService)
+            : base(timeService, settingsService)
+        {
+            Text = $"国内航班截载时间为起飞前{settingsService.GetSettings().StopCheckInAdvanceDuration.TotalMinutes}分钟。";
+            ItemsPerPage = 7;
+            PageCount = 1;
+            StationType = StationType.Departure;
+        }
+    }
+}

CRSim.ScreenSimulator/ViewModels/ScreenViewModel.cs

@@ -43,7 +43,15 @@ namespace CRSim.ScreenSimulator.ViewModels
             _timeService.RefreshSecondsElapsed += RefreshDisplay;
             Initialize();
         }
-        public int CurrentPageIndex = 0;
+        [ObservableProperty]
+        private int _currentPageIndex = 0;
+        public int PagesCount
+        {
+            get
+            {
+                return Math.Min((int)Math.Ceiling((double)TrainInfo.Count / ItemsPerPage * PageCount.Value),_settings.MaxPages);
+            }
+        }
         public int ItemsPerPage = 1;
 
         //<summary>