QuickLook/QuickLook.Plugin/QuickLook.Plugin.PDFViewer/PdfDocumentWrapper.cs

// Copyright © 2018 Paddy Xu
//
// This file is part of QuickLook program.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.IO;
using PdfiumViewer;

namespace QuickLook.Plugin.PDFViewer;

public class PdfDocumentWrapper : IDisposable
{
    public PdfDocumentWrapper(Stream stream, string password = null)
    {
        PdfStream = new MemoryStream((int)stream.Length);
        stream.CopyTo(PdfStream);

        PdfDocument = PdfDocument.Load(PdfStream, password);
    }

    public PdfDocument PdfDocument { get; private set; }

    public MemoryStream PdfStream { get; private set; }

    public void Dispose()
    {
        PdfDocument.Dispose();
        PdfDocument = null;
        PdfStream.Dispose();
        PdfStream = null;
    }

    public void Refresh()
    {
        var oldD = PdfDocument;

        PdfStream.Position = 0;
        var newObj = new PdfDocumentWrapper(PdfStream);
        PdfDocument = newObj.PdfDocument;
        PdfStream = newObj.PdfStream;

        oldD.Dispose();
    }
}