/// <summary>
/// Create a new <see cref="MuPDFDocument"/> from an array of bytes.
/// </summary>
/// <param name="context">The context that will own this document.</param>
/// <param name="data">An array containing the data bytes that make up the document. This must not be altered until after the <see cref="MuPDFDocument"/> has been disposed!
/// The address of the array will be pinned, which may cause degradation in the Garbage Collector's performance, and is thus only advised for short-lived documents. To avoid this issue, marshal the bytes to unmanaged memory and use one of the <see cref="IntPtr"/> constructors.</param>
/// <param name="fileType">The type of the document to read.</param>
public MuPDFDocument(MuPDFContext context, byte[] data, InputFileTypes fileType)
{
bool isImage = fileType == InputFileTypes.BMP || fileType == InputFileTypes.GIF || fileType == InputFileTypes.JPEG || fileType == InputFileTypes.PAM || fileType == InputFileTypes.PNG || fileType == InputFileTypes.PNM || fileType == InputFileTypes.TIFF;
this.OwnerContext = context;
DataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
IntPtr dataAddress = DataHandle.Value.AddrOfPinnedObject();
ulong dataLength = (ulong)data.Length;
float xRes = 0;
float yRes = 0;
ExitCodes result = (ExitCodes)NativeMethods.CreateDocumentFromStream(context.NativeContext, dataAddress, dataLength, FileTypeMagics[(int)fileType], isImage ? 1 : 0, ref NativeDocument, ref NativeStream, ref PageCount, ref xRes, ref yRes);
if (xRes > 72)
{
this.ImageXRes = xRes;
}
else
{
this.ImageXRes = 72;
}
if (yRes > 72)
{
this.ImageYRes = yRes;
}
else
{
this.ImageYRes = 72;
}
switch (result)
{
case ExitCodes.EXIT_SUCCESS:
break;
case ExitCodes.ERR_CANNOT_OPEN_STREAM:
throw new MuPDFException("Cannot open data stream", result);
case ExitCodes.ERR_CANNOT_OPEN_FILE:
throw new MuPDFException("Cannot open document", result);
case ExitCodes.ERR_CANNOT_COUNT_PAGES:
throw new MuPDFException("Cannot count pages", result);
default:
throw new MuPDFException("Unknown error", result);
}
Pages = new MuPDFPageCollection(context, this, PageCount);
DisplayLists = new MuPDFDisplayList[PageCount];
}
/// <summary>
/// Create a new <see cref="MuPDFDocument"/> from a file.
/// </summary>
/// <param name="context">The context that will own this document.</param>
/// <param name="fileName">The path to the file to open.</param>
public MuPDFDocument(MuPDFContext context, string fileName)
{
bool isImage;
string extension = Path.GetExtension(fileName).ToLowerInvariant();
switch (extension)
{
case ".bmp":
case ".dib":
case ".gif":
case ".jpg":
case ".jpeg":
case ".jpe":
case ".jif":
case ".jfif":
case ".jfi":
case ".pam":
case ".pbm":
case ".pgm":
case ".ppm":
case ".pnm":
case ".png":
case ".tif":
case ".tiff":
isImage = true;
break;
default:
isImage = false;
break;
}
this.OwnerContext = context;
float xRes = 0;
float yRes = 0;
ExitCodes result = (ExitCodes)NativeMethods.CreateDocumentFromFile(context.NativeContext, fileName, isImage ? 1 : 0, ref NativeDocument, ref PageCount, ref xRes, ref yRes);
if (xRes > 72)
{
this.ImageXRes = xRes;
}
else
{
this.ImageXRes = 72;
}
if (yRes > 72)
{
this.ImageYRes = yRes;
}
else
{
this.ImageYRes = 72;
}
switch (result)
{
case ExitCodes.EXIT_SUCCESS:
break;
case ExitCodes.ERR_CANNOT_OPEN_FILE:
throw new MuPDFException("Cannot open document", result);
case ExitCodes.ERR_CANNOT_COUNT_PAGES:
throw new MuPDFException("Cannot count pages", result);
default:
throw new MuPDFException("Unknown error", result);
}
Pages = new MuPDFPageCollection(context, this, PageCount);
DisplayLists = new MuPDFDisplayList[PageCount];
}