/// <summary>
/// Imports pages of <paramref name="sourceDocument"/> into the current <see cref="PdfDocument"/>.
/// </summary>
/// <seealso cref="PDFium.FPDF_ImportPages(Types.FPDF_DOCUMENT, Types.FPDF_DOCUMENT, int, int[])"/>
public bool Insert(int index, PdfDocument sourceDocument, params int[] srcPageIndices)
{
bool result;
if (index <= _pages.Count)
{
result = Pdfium.FPDF_ImportPages(_doc.Handle, sourceDocument.Handle, index, srcPageIndices);
if (result)
{
_pages.InsertRange(index, Enumerable.Repeat <PdfPage>(null, srcPageIndices.Length));
for (int i = index; i < _pages.Count; i++)
{
if (_pages[i] != null)
{
_pages[i].Index = i;
}
}
}
}
else
{
throw new ArgumentOutOfRangeException(nameof(index));
}
return(result);
}
public PdfDestination this[string name]
{
get
{
var handle = Pdfium.FPDF_GetNamedDestByName(_doc.Handle, name);
return(handle.IsNull ? null : new PdfDestination(_doc, handle, name));
}
}
public PdfDestination this[int index]
{
get
{
if (index < 0 || index >= Count)
{
throw new ArgumentOutOfRangeException(nameof(index));
}
(var handle, var name) = Pdfium.FPDF_GetNamedDest(_doc.Handle, index);
return(handle.IsNull ? null : new PdfDestination(_doc, handle, name));
}
}
internal PdfPageCollection(PdfDocument doc)
{
lock (_lock)
{
_doc = doc;
_pages = new List <PdfPage>(Pdfium.FPDF_GetPageCount(doc.Handle));
//Initialize _pages with null entries
for (int i = 0; i < _pages.Capacity; i++)
{
_pages.Add(null);
}
}
}
/// <summary>
/// Removes the page at <paramref name="index"/>.
/// </summary>
public void RemoveAt(int index)
{
if (index < _pages.Count)
{
((IDisposable)_pages[index])?.Dispose();
_pages.RemoveAt(index);
for (int i = index; i < _pages.Count; i++)
{
if (_pages[i] != null)
{
_pages[i].Index = i;
}
}
}
Pdfium.FPDFPage_Delete(_doc.Handle, index);
}
protected override void Dispose(FPDF_DOCUMENT handle)
{
((IDisposable)Pages).Dispose();
Pdfium.FPDF_CloseDocument(handle);
}
public void CopyViewerPreferencesFrom(PdfDocument srcDoc) => Pdfium.FPDF_CopyViewerPreferences(Handle, srcDoc.Handle);
public string GetMetaText(MetadataTags tag) => Pdfium.FPDF_GetMetaText(Handle, tag);
public PdfBookmark FindBookmark(string title)
{
var handle = Pdfium.FPDFBookmark_Find(Handle, title);
return(handle.IsNull ? null : new PdfBookmark(this, handle));
}
/// <summary>
/// Saves the <see cref="PdfDocument"/> to a <paramref name="stream"/>.
/// </summary>
/// <param name="version">
/// The new PDF file version of the saved file.
/// 14 for 1.4, 15 for 1.5, etc. Values smaller than 10 are ignored.
/// </param>
public bool Save(Stream stream, SaveFlags flags = SaveFlags.None, int version = 0)
{
return(Pdfium.FPDF_SaveAsCopy(Handle, stream, flags, version));
}
/// <summary>
/// Loads a <see cref="PdfDocument"/> from '<paramref name="count"/>' bytes read from a <paramref name="stream"/>.
/// <see cref="Close"/> must be called in order to free unmanaged resources.
/// </summary>
/// <param name="stream"></param>
/// <param name="fileRead"></param>
/// <param name="count">
/// The number of bytes to read from the <paramref name="stream"/>.
/// If the value is equal to or smaller than 0, the stream is read to the end.
/// </param>
/// <param name="password"></param>
public PdfDocument(Stream stream, FPDF_FILEREAD fileRead, int count = 0, string password = null)
: this(Pdfium.FPDF_LoadDocument(stream, fileRead, count, password))
{
}
/// <summary>
/// Loads a <see cref="PdfDocument"/> from memory.
/// <see cref="Close"/> must be called in order to free unmanaged resources.
/// </summary>
/// <param name="data">Byte array containing the bytes of the PDF document to load.</param>
/// <param name="index">The index of the first byte to be copied from <paramref name="data"/>.</param>
/// <param name="count">The number of bytes to copy from <paramref name="data"/> or a negative value to copy all bytes.</param>
public PdfDocument(byte[] data, int index = 0, int count = -1, string password = null)
: this(Pdfium.FPDF_LoadDocument(data, index, count, password))
{
}
/// <summary>
/// Fills a rectangle in the <see cref="PdfiumBitmap"/> with <paramref name="color"/>.
/// The pixel values in the rectangle are replaced and not blended.
/// </summary>
public void FillRectangle(int left, int top, int width, int height, FPDF_COLOR color)
{
Pdfium.FPDFBitmap_FillRect(Handle, left, top, width, height, color);
}
/// <summary>
/// Creates a new <see cref="PdfDocument"/>.
/// <see cref="Close"/> must be called in order to free unmanaged resources.
/// </summary>
public PdfDocument()
: this(Pdfium.FPDF_CreateNewDocument())
{
}
public PdfiumException()
: base($"PDFium Error: {Pdfium.FPDF_GetLastError().GetDescription()}")
{
}
protected override void Dispose(FPDF_BITMAP handle)
{
Pdfium.FPDFBitmap_Destroy(handle);
}
/// <summary>
/// Creates a new <see cref="PdfiumBitmap"/>. Unmanaged memory is allocated which must
/// be freed by calling <see cref="Dispose"/>.
/// </summary>
/// <param name="width">The width of the new bitmap.</param>
/// <param name="height">The height of the new bitmap.</param>
/// <param name="hasAlpha">A value indicating wheter the new bitmap has an alpha channel.</param>
/// <remarks>
/// A bitmap created with this overload always uses 4 bytes per pixel.
/// Depending on <paramref name="hasAlpha"/> the <see cref="Format"/> is then either
/// <see cref="BitmapFormats.BGRA"/> or <see cref="BitmapFormats.BGRx"/>.
/// </remarks>
public PdfiumBitmap(int width, int height, bool hasAlpha, bool forceAlphaChannel = false)
: this(Pdfium.FPDFBitmap_Create(width, height, hasAlpha))
{
_forceAlphaChannel = forceAlphaChannel;
FillRectangle(0, 0, width, height, 0xFFFFFFFF);
}
/// <summary>
/// Loads a <see cref="PdfDocument"/> from the file system.
/// <see cref="Close"/> must be called in order to free unmanaged resources.
/// </summary>
/// <param name="fileName">Filepath of the PDF file to load.</param>
public PdfDocument(string fileName, string password = null)
: this(Pdfium.FPDF_LoadDocument(fileName, password))
{
}
/// <summary>
/// Creates a new <see cref="PdfiumBitmap"/> using memory allocated by the caller.
/// The caller is responsible for freeing the memory and that the adress stays
/// valid during the lifetime of the returned <see cref="PdfiumBitmap"/>. To free
/// unmanaged resources, <see cref="Dispose"/> must be called.
/// </summary>
/// <param name="width">The width of the new bitmap.</param>
/// <param name="height">The height of the new bitmap.</param>
/// <param name="format">The format of the new bitmap.</param>
/// <param name="scan0">The adress of the memory block which holds the pixel values.</param>
/// <param name="stride">The number of bytes per image row.</param>
public PdfiumBitmap(int width, int height, BitmapFormats format, IntPtr scan0, int stride)
: this(Pdfium.FPDFBitmap_CreateEx(width, height, format, scan0, stride))
{
FillRectangle(0, 0, width, height, 0xFFFFFFFF);
}