public static int CountPages(IPDFSource source, string password = null)
{
using (PDFFileStream stream = new PDFFileStream(source)) {
ValidatePassword(stream.Document, password);
return(MuPDFNativeApi.Native.CountPages(stream.Document));
}
}
public void Load(IPDFSource source, string password = null)
{
virtualPanel = this.FindChild <CustomVirtualizingPanel>();
scrollViewer = this.FindChild <ScrollViewer>();
virtualPanel.PageBounds = parent.PageBounds.Select(b => b.SizeIncludingOffset).ToArray();
imageProvider = new PDFImageProvider(source, parent.PageCount,
new DisplaySettings(parent.GetPagePer(), parent.ViewType, parent.HMargin, parent.PageRotation),
password: password);
if (parent.Zoom == ZoomType.FIXED)
{
CreateNewItemsSource();
}
else if (parent.Zoom == ZoomType.FIT_HEIGHT)
{
ZoomToHeight();
}
else if (parent.Zoom == ZoomType.FIT_WIDTH)
{
ZoomToWidth();
}
if (scrollViewer != null)
{
scrollViewer.Visibility = System.Windows.Visibility.Visible;
scrollViewer.ScrollToTop();
}
}
public PDFImageProvider(IPDFSource source, int total, DisplaySettings settings, bool preFetch = true, string password = null)
{
this.source = source;
this.total = total;
this.Settings = settings;
this.preFetch = preFetch;
this.password = password;
}
public void Open(IPDFSource source, string password = null)
{
LoadPdf(source, password);
if (PDFLoaded != null)
{
PDFLoaded(this, EventArgs.Empty);
}
}
public static Bitmap ExtractPage(IPDFSource source, int pageNumber, float zoomFactor = 1.0f, string password = null)
{
int pageNumberIndex = Math.Max(0, pageNumber - 1);
using (PDFFileStream stream = new PDFFileStream(source)) {
ValidatePassword(stream.Document, password);
IntPtr ptr = IntPtr.Zero;
try {
ptr = MuPDFNativeApi.Native.LoadPage(stream.Document, pageNumberIndex);
return(RenderPage(stream.Context, stream.Document, ptr, zoomFactor));
} finally {
if (ptr != IntPtr.Zero)
{
MuPDFNativeApi.Native.FreePage(stream.Document, ptr);
}
}
}
}
public PDFFileStream(IPDFSource source)
{
if (source is FileSource)
{
FileSource fileSource = (FileSource)source;
Context = MuPDFNativeApi.Native.NewContext(IntPtr.Zero, IntPtr.Zero, FZ_STORE_DEFAULT);
Stream = MuPDFNativeApi.Native.OpenFile(Context, fileSource.Filename);
Document = MuPDFNativeApi.Native.OpenDocumentStream(Context, PDF_EXTENSION, Stream);
}
else if (source is ByteSource)
{
ByteSource byteSource = (ByteSource)source;
Context = MuPDFNativeApi.Native.NewContext(IntPtr.Zero, IntPtr.Zero, FZ_STORE_DEFAULT);
GCHandle pinnedArray = GCHandle.Alloc(byteSource.Data, GCHandleType.Pinned);
IntPtr ptr = pinnedArray.AddrOfPinnedObject();
Stream = MuPDFNativeApi.Native.OpenStream(Context, ptr, byteSource.Data.Length);
Document = MuPDFNativeApi.Native.OpenDocumentStream(Context, PDF_EXTENSION, Stream);
pinnedArray.Free();
}
}
public static System.Windows.Size[] GetPageBounds(IPDFSource source, ImageRotation rotation = ImageRotation.NONE, string password = null)
{
using (PDFFileStream stream = new PDFFileStream(source)) {
ValidatePassword(stream.Document, password);
int pageSize = MuPDFNativeApi.Native.CountPages(stream.Document);
return(Enumerable.Range(0, pageSize - 1)
.Select(x => {
IntPtr ptr = IntPtr.Zero;
try {
ptr = MuPDFNativeApi.Native.LoadPage(stream.Document, x);
MuPDFLibrary.Interop.Rectangle bound = MuPDFNativeApi.Native.BoundPage(stream.Document, ptr);
return SizeCallback(rotation)(bound.Width, bound.Height);
} finally {
if (ptr != IntPtr.Zero)
{
MuPDFNativeApi.Native.FreePage(stream.Document, ptr);
}
}
}).ToArray());
}
}
private void LoadPdf(IPDFSource source, string password = null)
{
pageBounds = CalcPageBounds(MuPDF.GetPageBounds(source, PageRotation), ViewType);
PageCount = pageBounds.Length;
pdf.Load(source);
}
public static bool NeedsPassword(IPDFSource source)
{
using (PDFFileStream stream = new PDFFileStream(source)) {
return(NeedsPassword(stream.Document));
}
}
