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Paddy Xu
2017-04-30 02:27:07 +03:00
parent f5d9dc3e14
commit f11c59be01
30 changed files with 807 additions and 48 deletions
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QuickLook.Plugin/QuickLook.Plugin.OfficeViewer/OfficeInteropWrapper.cs Normal file
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using System;
using System.Diagnostics;
using System.IO;
using Microsoft.Office.Interop.Excel;
using Microsoft.Office.Interop.PowerPoint;
using Microsoft.Office.Interop.Word;
using Application = Microsoft.Office.Interop.Excel.Application;
using Task = System.Threading.Tasks.Task;
namespace QuickLook.Plugin.OfficeViewer
{
internal class OfficeInteropWrapper : IDisposable
{
public enum FileTypeEnum
{
Word,
Excel,
PowerPoint
}
private readonly string _path;
private readonly string _tempPdf = Path.GetTempFileName();
private Application _excelApp;
private Microsoft.Office.Interop.PowerPoint.Application _powerpointApp;
private Microsoft.Office.Interop.Word.Application _wordApp;
public OfficeInteropWrapper(string path)
{
_path = path;
switch (Path.GetExtension(path).ToLower())
{
case ".doc":
case ".docx":
FileType = FileTypeEnum.Word;
break;
case ".xls":
case ".xlsx":
FileType = FileTypeEnum.Excel;
break;
case ".ppt":
case ".pptx":
FileType = FileTypeEnum.PowerPoint;
break;
default:
throw new NotSupportedException($"{path} is not supported.");
}
LoadApplication();
}
public FileTypeEnum FileType { get; }
public void Dispose()
{
GC.SuppressFinalize(this);
// communicate with COM in a separate thread
Task.Run(() =>
{
try
{
//_wordApp?.Documents.Close(false);
_wordApp?.Quit(false);
_wordApp = null;
_excelApp?.Workbooks.Close();
_excelApp?.Quit();
_excelApp = null;
_powerpointApp?.Quit();
_powerpointApp = null;
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
Debug.WriteLine(e.StackTrace);
}
})
.Wait();
}
public string SaveAsPdf()
{
if (_wordApp == null && _excelApp == null && _powerpointApp == null)
throw new Exception("Office application launch failed.");
var succeeded = false;
// communicate with COM in a separate thread
Task.Run(() =>
{
try
{
switch (FileType)
{
case FileTypeEnum.Word:
_wordApp.ActiveDocument.ExportAsFixedFormat(_tempPdf,
WdExportFormat.wdExportFormatPDF);
succeeded = true;
break;
case FileTypeEnum.Excel:
_excelApp.ActiveWorkbook.ExportAsFixedFormat(XlFixedFormatType.xlTypePDF,
_tempPdf);
succeeded = true;
break;
case FileTypeEnum.PowerPoint:
_powerpointApp.ActivePresentation.ExportAsFixedFormat(_tempPdf,
PpFixedFormatType.ppFixedFormatTypePDF);
succeeded = true;
break;
default:
throw new NotSupportedException($"{_path} is not supported.");
}
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
Debug.WriteLine(e.StackTrace);
}
})
.Wait();
if (succeeded)
return FileType == FileTypeEnum.Excel
? _tempPdf + ".pdf"
: _tempPdf; // Excel will add ".pdf" to our filename
Dispose();
return string.Empty;
}
private void LoadApplication()
{
var succeeded = false;
// communicate with COM in a separate thread
Task.Run(() =>
{
try
{
switch (FileType)
{
case FileTypeEnum.Word:
_wordApp = new Microsoft.Office.Interop.Word.Application();
_wordApp.Documents.Add(_path);
succeeded = true;
break;
case FileTypeEnum.Excel:
_excelApp = new Application();
_excelApp.Workbooks.Add(_path);
succeeded = true;
break;
case FileTypeEnum.PowerPoint:
_powerpointApp = new Microsoft.Office.Interop.PowerPoint.Application();
_powerpointApp.Presentations.Open(_path);
succeeded = true;
break;
default:
throw new NotSupportedException($"{_path} is not supported.");
}
}
catch (Exception e)
{
Debug.WriteLine(e.Message);
Debug.WriteLine(e.StackTrace);
}
})
.Wait();
if (!succeeded)
Dispose();
}
~OfficeInteropWrapper()
{
Dispose();
}
}
}