public bool Open(string filename, string password)
{
if (!string.IsNullOrEmpty(_fileName) && useLock && _fileName.Equals(filename))
{
if (mp == null)
{
_pass = password;
mp = new MuPDF(_fileName, _pass, !useLock);
}
return(mp != null);
}
_fileName = filename;
_pass = password;
if (!string.IsNullOrEmpty(_fileName))
{
mp = new MuPDF(_fileName, _pass, !useLock);
}
bool ret = mp != null;
if (!useLock && mp != null)
{
mp.Dispose();
mp = null;
}
return(ret);
}
public PDF(string fileName) : base(fileName)
{
MuPDF pdf = null;
pdf = new MuPDF(fileName, "");
pageCount = pdf.PageCount;
if (pageCount < 1)
{
throw new Exception("Could not open PDF.");
}
pdf.Dispose();
}
/// <summary>
/// Disposeable pattern.
/// </summary>
/// <param name="dispose">Whether to release managed resources.</param>
protected virtual void Dispose(bool dispose)
{
if (_disposed)
{
return;
}
if (dispose)
{
_mupdf.Dispose();
}
_disposed = true;
}
public override Bitmap LoadPage(int pageNumber)
{
if (!File.Exists(fileName))
{
throw new Exception("File does not exist.");
}
if (bmp != null)
{
bmp.Dispose();
}
var pdf = new MuPDF(fileName, "");
pdf.Page = pageNumber;
pdf.AntiAlias = true;
int width = (int)(pdf.Width * resolution / 72.0F);
int height = (int)(pdf.Height * resolution / 72.0F);
int estMemUsageMB = (int)Math.Ceiling(width * height * 3.0 / 1024 / 1024);
Debug.WriteLine("Estimated memory {0} MB", estMemUsageMB);
System.Runtime.MemoryFailPoint mfp = null;
try
{
mfp = new System.Runtime.MemoryFailPoint(estMemUsageMB);
bmp = pdf.GetBitmap(width, height, 72, 72, 0, RenderType.RGB, false, false, 0);
}
catch (InsufficientMemoryException)
{
throw new Exception("Not enough memory.");
}
finally
{
mfp.Dispose();
pdf.Dispose();
}
return(bmp);
}
