HuNan_DM/DM_Weight/ViewModels/MainWindowViewModel.cs

using MaterialDesignThemes.Wpf;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Media;
using DM_Weight.msg;
using DM_Weight.Port;
using DM_Weight.util;
using DM_Weight.Finger;
using DM_Weight.Views;
using Unity;
using DM_Weight.Models;
using System.Runtime.CompilerServices;

namespace DM_Weight.ViewModels
{
    internal class MainWindowViewModel : BindableBase
    {
        private string _title = "Prism App";   //标题

        private ISnackbarMessageQueue _snackbarMessageQueue = new SnackbarMessageQueue(TimeSpan.FromSeconds(3));

        private SolidColorBrush _colorBrush;


        //private PortUtil _portUtil;

        private ScreenUtil _screenUtil;

        public SolidColorBrush Background
        {
            get => _colorBrush;
            set => SetProperty(ref _colorBrush, value);
        }

        public ISnackbarMessageQueue SnackbarMessageQueue
        {
            get => _snackbarMessageQueue;
            set => SetProperty(ref _snackbarMessageQueue, value);
        }
        public string Title
        {
            get { return _title; }
            set { SetProperty(ref _title, value); }
        }


        IEventAggregator eventAggregator;


        //public MainWindowViewModel(IEventAggregator eventAggregator, PortUtil portUtil, ScreenUtil screenUtil)
        //{
        //    _portUtil = portUtil;
        //    this.eventAggregator = eventAggregator;
        //    this.eventAggregator.GetEvent<SnackbarEvent>().Subscribe(doMyPrismEvent2);
        //    _screenUtil = screenUtil;
        //}
        private FingerprintUtil _fingerprintUtil;
        IRegionManager _regionManager;
        IUnityContainer _container;
        PortUtil _portUtil;
        private List<ChannelStock> _channelStocks = new List<ChannelStock>();
        public MainWindowViewModel(IRegionManager regionManager, IUnityContainer container, IEventAggregator eventAggregator, FingerprintUtil fingerprintUtil, ScreenUtil screenUtil, PortUtil portUtil)
        {
            //_portUtil = portUtil;
            this.eventAggregator = eventAggregator;
            this.eventAggregator.GetEvent<SnackbarEvent>().Subscribe(doMyPrismEvent2);
            _screenUtil = screenUtil;
            _fingerprintUtil = fingerprintUtil;
            _regionManager = regionManager;
            _container = container;
            _portUtil = portUtil;   

            Task.Factory.StartNew(()=>BindStock()); ;       

            System.Windows.Application.Current.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Send, new Action(() =>
            {

                _container.RegisterType<object, LoginWindow>("LoginWindow");
                _regionManager.RequestNavigate("MainRegion", "LoginWindow");

            }));
        }

        void doMyPrismEvent2(AlertMsg msg)
        {
            switch (msg.Type)
            {
                case MsgType.INFO:
                    this.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#00e676"));
                    break;
                case MsgType.ERROR:
                    this.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#b71c1c"));
                    break;
                default:
                    this.Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#00e676"));
                    break;
            }
            SnackbarMessageQueue.Enqueue(msg.Message);
        }
        //写标签数量
        async Task BindStock()
        {
            List<ChannelStock> singleChannels = SqlSugarHelper.Db.Queryable<ChannelStock>().Where(cs => cs.BoardType == 5).Where(cs => cs.DrugId !=null).ToList();
            
            for (int i = 0; i < singleChannels.Count; i++)
            {
                _portUtil.WriteQuantity(singleChannels[i].DrawerNo, singleChannels[i].ColNo, singleChannels[i].Quantity);
                await Task.Delay(TimeSpan.FromMilliseconds(20));
            }
        }
    }
}