PDFOffice_Windows_exe/PDF Office/ViewModels/Dialog/HomePageToolsDialogs/CreateFromScannerDialogsViewModel.cs

using ComPDFKit.PDFDocument;
using NTwain;
using NTwain.Data;
using PDF_Master.CustomControl;
using PDF_Master.Helper;
using PDF_Master.Model;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Forms;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using WIA;

namespace PDF_Master.ViewModels.Dialog.HomePageToolsDialogs
{
    

    //扫描仪设备
    public class ScannerItem : BindableBase
    {
        public DataSource DataSourceItem { get; set; }
        public ScannerItem(DataSource dataSource)
        {
            DataSourceItem = dataSource;
            ScannerName = dataSource.Name;
        }
        public string ScannerName { get; set; }
    }

    public class CreateFromScannerDialogsViewModel : BindableBase, IDialogAware
    {

        public static ImageFile imageFile;

        public string Title => "";
        //图片路径
        public string FilePath { get; private set; }
        public event Action<IDialogResult> RequestClose;
        public virtual void RaiseRequestClose(IDialogResult dialogResult)
        {
            RequestClose?.Invoke(dialogResult);
        }

        
        private List<ScannerItem> _scanners = new List<ScannerItem>();
        public List<ScannerItem> Scanners
        {
            get { return _scanners; }
            set => SetProperty(ref _scanners, value);
        }

        public List<string> _ScanItems =new List<string>();
        //图片路径
        public List<string> Scanitems
        {
            get { return _ScanItems; }
            set => SetProperty(ref _ScanItems, value);
        }
        private bool _IsEnable = true;
        public bool IsEnable
        {
            get { return _IsEnable; }
            set { SetProperty(ref _IsEnable, value);
                
            }
        }

        /// <summary>
        ///  没有扫描仪显示图
        /// </summary>
        private Visibility _Gridvis=Visibility.Collapsed;
        public Visibility Gridvis
        {
            get { return _Gridvis; }
            set { SetProperty(ref _Gridvis, value);
                if (Gridvis == Visibility.Visible)
                {
                    IsEnable = false;
                }
                else
                {
                    IsEnable = true;
                }
            }
        }




        #region 框架
        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {

        }

        public void OnDialogOpened(IDialogParameters parameters)
        {

        }
        #endregion



     

       
        private int _SeIndex=-1;
        public int SeIndex
        {
            get { return _SeIndex; }
            set => SetProperty(ref _SeIndex, value);
        }


        public MainContentViewModel mainContentViewModel;
        public DelegateCommand ToScanCommand { get; set; }
        public DelegateCommand CreateCommand { get; set; }
        public DelegateCommand<object> SelectedScannerCommand { get; set; }



        CreateFromScannerDialogsViewModel(IRegionManager regionManager, IDialogService dialogService)
        {

            ToScanCommand = new DelegateCommand(ToScan);
            ScanAdd();
         
        }

        public void ScanAdd()
        {
            DeviceManager deviceManager;
            deviceManager = new DeviceManager();

            for (int i = 1; i <= deviceManager.DeviceInfos.Count; i++)
            {

                if (deviceManager.DeviceInfos[i].Type != WiaDeviceType.ScannerDeviceType)
                {
                    continue;
                }
                Scanitems.Add(deviceManager.DeviceInfos[i].Properties["Name"].get_Value());
            }
            if (Scanitems.Count == 0)
            {
                Gridvis = Visibility.Visible;
            }
            else
            {
                SeIndex = 0;
            }

        }



        public void ToScan()
        {
           
            if (SeIndex>-1)
            {
                imageFile = Scan();
            }
            

        }


        public ImageFile Scan()
        {
            ImageFile image = null;
            DeviceManager deviceManager;
            deviceManager = new DeviceManager();
            Device device;

            try
            {

                WIA.CommonDialog dialog = new WIA.CommonDialog();


                Items items;
                for (int i = 1, j = 0; i <= deviceManager.DeviceInfos.Count; i++)
                {

                    if (deviceManager.DeviceInfos[i].Type != WiaDeviceType.ScannerDeviceType)
                    {
                        continue;
                    }

                    if (j == SeIndex)
                    {
                        device = deviceManager.DeviceInfos[i].Connect();
                        items = dialog.ShowSelectItems(device, SingleSelect: true);
                        if (items != null)
                        {
                            //image = (ImageFile)device.Items[1];
                            image = dialog.ShowTransfer(device.Items[1]);
                            ToImage(image);
                            break;
                        }
                    }
                    j++;
                }

                if (image != null)
                {

                }
                return image;
            }
            catch (COMException ex)
            {
                 Gridvis = Visibility.Visible;
                return null;
            }
        }


        public void ToImage(ImageFile img)
        {
          
            if (img != null)

            {
                string path = App.CachePath.ScanFilePath;
                string FileName = path+ "\\"+ Guid.NewGuid().ToString() + ".bmp";
                img.SaveFile(FileName);
                string keyy = "Imagepath";
                DialogParameters keyValues = new DialogParameters();
                keyValues.Add(keyy, FileName);
                RaiseRequestClose(new Prism.Services.Dialogs.DialogResult(ButtonResult.OK, keyValues));
                App.CachePath.AddToDeleteFiles(path);


            }


        }


        private void JpegInsertPage(ref CPDFDocument topdfdoc, string filename, FileInfo fileinfo, int width, int height, int index = 0)
        {

            string tempFileName = "";
            if (fileinfo.Extension == ".jpg" || fileinfo.Extension == ".jpeg")
            {
                topdfdoc.InsertPage(index, width, height, filename);
            }
            else
            {
                tempFileName = Path.GetTempPath() + "pngtemp.jpg";
                if (!PictureConverter.SaveJpeg(filename, tempFileName))
                {
                    MessageBoxEx.Show("图片格式有问题");
                }
                topdfdoc.InsertPage(index, width, height, tempFileName);
            }
        }


        public string savefilename(string filename, string filepath)
        {
            FileInfo file = new FileInfo(filename);
            return CommonHelper.CreateFilePath(filepath  + file.Name.Replace(file.Extension, ".pdf") );
        }
    }
}