AUCMA_SCADA/Aucma.Core.PrintTo/ViewModels/SpecialPrintToViewModel.cs

using Admin.Core.Common;
using Admin.Core.IService;
using Aucma.Core.PrintTo.Common;
using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using CommunityToolkit.Mvvm.Messaging;
using FastReport;
using log4net;
using Microsoft.Extensions.DependencyInjection;
using NPOI.HSSF.Record.Chart;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;

namespace Aucma.Core.PrintTo.ViewModels
{
    /**
     * 
     * 特殊条码打印
     * 
     * */
    public partial class SpecialPrintToViewModel : ObservableObject
    {
        private static readonly log4net.ILog log = LogManager.GetLogger(typeof(SpecialPrintToViewModel));
        private Queue<string> BarcodesUnprinted { get; } = new Queue<string>();
        private Queue<string> BarcodesPrinted { get; } = new Queue<string>();
        protected readonly IOrderBomInfoServices _orderBomInfoServices;
        private PrintState printState { get; set; } = PrintState.Idle;//打印状态

        protected bool isPrint { get; set; } = true;//打印打印标志

        public SpecialPrintToViewModel(string barCode, int num) {
            _orderBomInfoServices = App.ServiceProvider.GetService<IOrderBomInfoServices>();
            State = "Green";
            ErrorNum = 0;
            printState = PrintState.Printing;
            BarCode = barCode;
            Num = num;
            MaxProgress = num;
            Progress = 0;
            SuspendEnabled = "False";
            OperateEnabled = "True";
            // 非阻塞打印
            Task.Run(async () =>
            {
                await ExecPrintAsync(barCode, num); ;
            });
        }

        #region 执行打印
        /// <summary>
        /// 执行打印
        /// </summary>
        /// <param name="barCode">二维码</param>
        /// <param name="num">打印数量</param>
        /// <returns></returns>
 
        public Task ExecPrintAsync(string barCode,int num)
        {
            for (int i = 0; i < num; i++) { BarcodesUnprinted.Enqueue(barCode); }
            return Task.CompletedTask;
        }
        #endregion

        #region 打印
        [RelayCommand]
        public void StartOperate()
        {
            printState= PrintState.Printing;
            SuspendEnabled = "True";
            OperateEnabled = "False";
            State = "Green";
            if (isPrint)//首次打印
            {
                isPrint= false;
                // 非阻塞打印
                Task.Run(async () =>
                {
                    await Print();
                });
            }
           
        }
        public async Task<bool> Print()
        {
            try
            {
                string printer = Appsettings.app("Printer", "PrinterName");
                int printNum = BarcodesUnprinted.Count;//打印数
                int i = 1;

                while (BarcodesUnprinted.Count > 0)
                {
                    if (printState == PrintState.Paused)
                    {
                        SetPaused(); 
                        Thread.Sleep(1 * 1000);
                        continue;
                    }
                    if (printState == PrintState.Completetd) break;
                    try
                    {
                        var item = BarcodesUnprinted.Peek();

                        #region 打印机
                        //对接打印机
                        Report barReport = new Report();
                        barReport.Load(System.Environment.CurrentDirectory + @"\Report\MaterialBar.frx");
                        
                        // 设置打印机和打印选项
                        barReport.PrintSettings.ShowDialog = false; // 是否打开打印机选择框  
                        barReport.PrintSettings.Printer = printer; // 设置打印机名称
                        barReport.PrintSettings.Copies = 1; // 设置打印份数
                                                            //barReport.PrintSettings.PageRange = "1-3"; // 设置打印页范围
                        barReport.SetParameterValue("BoxBarData.Id", item);
                        barReport.SetParameterValue("BoxBarData.Order_No", item);//订单码
                        barReport.SetParameterValue("BoxBarData.Order_Material_Name", item);//物料名称
                        barReport.SetParameterValue("BoxBarData.Bar_Code", item);//二维码

                        //barReport.Prepare();
                        //string BarPath = System.Environment.CurrentDirectory + @"\pdf\" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf";
                        //barReport.Export(new PDFExport(), BarPath);

                        barReport.Print();
                        #endregion

                        PrintProgress = $"[{printNum}/{i}]  {item}";
                        BarcodesPrinted.Enqueue(BarcodesUnprinted.Dequeue());
                        Thread.Sleep(1000);
                        Progress = i;

                        i++;
                    }
                    catch (Exception ex)
                    {
                        log.Error($"打印出错:{ex.Message}");
                        ErrorNum++;
                    }
                    finally
                    {
                        isPrint = true;
                    }
                }
                //打印完成
                SetCompletetd();
                SuspendEnabled = "False";
                OperateEnabled = "False";
            }
            catch (Exception ex)
            {
                log.Error($"打印出错:{ex.Message}");
            }
            return await Task.FromResult(true);
        }
        #endregion

        #region 暂停
        [RelayCommand]
        private void SuspendOperate()
        {
            printState = PrintState.Paused;

            State = "yellow";
            isPrint = false;

            SuspendEnabled = "False";
            OperateEnabled = "True";
        } 
        #endregion

        #region 暂停
        /// <summary>
        /// 暂停
        /// </summary>
        private void SetPaused()
        {
            printState = PrintState.Paused;

            State = "yellow";
            isPrint = false;
        }
        #endregion

        #region 完成
        /// <summary>
        /// 暂停
        /// </summary>
        private void SetCompletetd()
        {
            printState = PrintState.Completetd;

            State = "Green";
            isPrint = false;
            OperateEnabled = "True";
        }
        #endregion

        #region 关闭当前界面
        /// <summary>
        /// 关闭当前界面
        /// </summary>
        /// <param name="parameter"></param>
        [RelayCommand]
        public void CloseWindow(object parameter)
        {
            var window = parameter as Window;
            if (window == null) return;
            isPrint = true;
            if (printState == PrintState.Completetd)
            {
                WeakReferenceMessenger.Default.Send<string>("Refresh");//刷新窗口
                window.Close();
                return;
            }
            if (MessageBox.Show("确定要退出打印吗？", "系统提醒", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) == MessageBoxResult.Yes)
            {
                printState = PrintState.Stopped;
                WeakReferenceMessenger.Default.Send<string>("Refresh");//刷新窗口
                window.Close();
            }
        }

        #endregion

        #region 属性

        #region 二维码值
        private string _barCode;

        public string BarCode { get => _barCode; set => SetProperty(ref _barCode, value); }
        #endregion

        #region 数量
        private int _num;

        public int Num { get => _num; set => SetProperty(ref _num, value); }
        #endregion

        #region 进度条最大值
        private int _maxProgress;

        public int MaxProgress { get => _maxProgress; set => SetProperty(ref _maxProgress, value); }
        #endregion

        #region 异常数量
        private int _errorNum;
        public int ErrorNum { get => _errorNum; set => SetProperty(ref _errorNum, value); }
        #endregion

        #region 打印进度
        private string _printProgress;

        public string PrintProgress { 
            get => _printProgress; 
            set => SetProperty(ref _printProgress, value);
        }
        #endregion

        #region 打印状态
        private string _state;

        public string State { get => _state; set => SetProperty(ref _state, value); }
        #endregion

        #region 进度条进度
        private int _progress;

        public int Progress { get => _progress; set => SetProperty(ref _progress, value); }
        #endregion

        #region 操作打印按钮状态
        private string _operateEnabled;
        public string OperateEnabled
        {
            get => _operateEnabled;
            set => SetProperty(ref _operateEnabled, value);
        }
        #endregion

        #region 操作暂停按钮状态
        private string _suspendEnabled;
        public string SuspendEnabled
        {
            get => _suspendEnabled;
            set => SetProperty(ref _suspendEnabled, value);
        }
        #endregion

        
        #endregion
    }
}