/// <summary>
/// Generates all PDF pages as JPEG files for a given pdf source and a destination folder.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="destination">The destination folder</param>
/// <param name="width">Used to get a smaller or bigger JPEG file, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static void GeneratePagesAtWidth(IPdfSource source, string destination, int width, string password = null)
{
if (!Directory.Exists(destination))
{
throw new DirectoryNotFoundException("The directory \"" + destination + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
int pageCount = CountPages(source);
var currentDpi = DpiHelper.GetCurrentDpi();
for (int i = 0; i < pageCount; i++)
{
GC.Collect();
GC.WaitForPendingFinalizers();
IntPtr p = NativeMethods.LoadPage(stream.Document, i); // loads the page
var bmp = RenderPageAtWidth(stream.Context, stream.Document, p, width, currentDpi.HorizontalDpi, currentDpi.VerticalDpi);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
bmp.Save(Path.Combine(destination, i + generateOutputExtension), generateOutputFormat);
}
}
GC.Collect();
GC.WaitForPendingFinalizers();
}
/// <summary>
/// Return the total number of pages for a give PDF filename.
/// </summary>
public static int CountPages(string pdfFilename)
{
using (var stream = new PdfFileStream(pdfFilename))
{
return(NativeMethods.CountPages(stream.Document)); // gets the number of pages in the document
}
}
/// <summary>
/// Gets the page bounds for all pages of the given PDF. If a relevant rotation is supplied, the bounds will
/// be rotated accordingly before returning.
/// </summary>
/// <param name="rotation">The rotation that should be applied</param>
/// <param name="password">The password for the pdf file (if required)</param>
/// <returns></returns>
public static Size[] GetPageBounds(IPdfSource source, ImageRotation rotation = ImageRotation.None,
string password = null)
{
Func<double, double, Size> sizeCallback = (width, height) => new Size(width, height);
if (rotation == ImageRotation.Rotate90 || rotation == ImageRotation.Rotate270)
sizeCallback = (width, height) => new Size(height, width); // switch width and height
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
var pageCount = NativeMethods.CountPages(stream.Document); // gets the number of pages in the document
var resultBounds = new Size[pageCount];
for (var i = 0; i < pageCount; i++)
{
var p = NativeMethods.LoadPage(stream.Document, i); // loads the page
var pageBound = NativeMethods.BoundPage(stream.Document, p);
resultBounds[i] = sizeCallback(pageBound.Width, pageBound.Height);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
}
return resultBounds;
}
}
public static bool NeedsPassword(IPdfSource source)
{
using (var stream = new PdfFileStream(source))
{
return(NeedsPassword(stream.Document));
}
}
/// <summary>
/// Gets the page bounds for all pages of the given PDF. If a relevant rotation is supplied, the bounds will
/// be rotated accordingly before returning.
/// </summary>
/// <param name="rotation">The rotation that should be applied</param>
/// <param name="password">The password for the pdf file (if required)</param>
/// <returns></returns>
public static System.Windows.Size[] GetPageBounds(IPdfSource source, ImageRotation rotation = ImageRotation.None, string password = null)
{
Func <double, double, System.Windows.Size> sizeCallback = (width, height) => new System.Windows.Size(width, height);
if (rotation == ImageRotation.Rotate90 || rotation == ImageRotation.Rotate270)
{
sizeCallback = (width, height) => new System.Windows.Size(height, width); // switch width and height
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
var pageCount = NativeMethods.CountPages(stream.Document); // gets the number of pages in the document
var resultBounds = new System.Windows.Size[pageCount];
for (int i = 0; i < pageCount; i++)
{
IntPtr p = NativeMethods.LoadPage(stream.Document, i); // loads the page
Rectangle pageBound = NativeMethods.BoundPage(stream.Document, p);
resultBounds[i] = sizeCallback(pageBound.Width, pageBound.Height);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
}
return(resultBounds);
}
}
/// <summary>
/// Generates all PDF pages as JPEG files for a given pdf source and a destination folder.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="destination">The destination folder</param>
/// <param name="size">Used to get a smaller or bigger JPEG file, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static void GeneratePagesAtSize(IPdfSource source, string destination, Size size, string password = null)
{
if (!Directory.Exists(destination))
{
throw new DirectoryNotFoundException("The directory \"" + destination + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
int pageCount = CountPages(source);
var currentDpi = DpiHelper.GetCurrentDpi();
for (int i = 0; i < pageCount; i++)
{
GC.Collect();
GC.WaitForPendingFinalizers();
IntPtr p = NativeMethods.LoadPage(stream.Document, i); // loads the page
var bmp = RenderPageAtSize(stream.Context, stream.Document, p, size, currentDpi.HorizontalDpi, currentDpi.VerticalDpi);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
bmp.Save(Path.Combine(destination, i + generateOutputExtension), generateOutputFormat);
}
}
GC.Collect();
GC.WaitForPendingFinalizers();
}
/// <summary>
/// Return the total number of pages for a give PDF.
/// </summary>
public static int CountPages(IPdfSource source, string password = null)
{
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
return(NativeMethods.CountPages(stream.Document)); // gets the number of pages in the document
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf filename and a page number.
/// </summary>
/// <param name="pdfFilename">Must be the full path for an existing PDF file</param>
/// <param name="pageNumber">Page number, starting at 1</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
public static Bitmap ExtractPage(string pdfFilename, int pageNumber, float zoomFactor = 1.0f)
{
var pageNumberIndex = Math.Max(0, pageNumber - 1); // pages start at index 0
using (var stream = new PdfFileStream(pdfFilename))
{
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumberIndex); // loads the page
var bmp = RenderPage(stream.Context, stream.Document, p, zoomFactor);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return(bmp);
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf filename and a page number.
/// </summary>
/// <param name="pageNumber">Page number, starting at 1</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static Bitmap ExtractPage(IPdfSource source, int pageNumber, float zoomFactor = 1.0f, string password = null)
{
var pageNumberIndex = Math.Max(0, pageNumber - 1); // pages start at index 0
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumberIndex); // loads the page
var bmp = RenderPage(stream.Context, stream.Document, p, zoomFactor);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return bmp;
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf filename and a page number.
/// </summary>
/// <param name="pageNumber">Page number, starting at 1</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static Bitmap ExtractPage(IPdfSource source, int pageNumber, float zoomFactor = 1.0f, string password = null)
{
var pageNumberIndex = Math.Max(0, pageNumber - 1); // pages start at index 0
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Context, stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Context, stream.Document, pageNumberIndex); // loads the page
var bmp = RenderPage(stream.Context, p, zoomFactor);
NativeMethods.DropPage(stream.Context, p); // releases the resources consumed by the page
return(bmp);
}
}
/// <summary>
/// Gets the page bounds for a given pdf source and a page number.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="pageNumber">Page number, starting at 0</param>
/// <param name="password">The password for the pdf file (if required)</param>
/// <returns></returns>
public static System.Windows.Size GetPageBound(IPdfSource source, int pageNumber, string password = null)
{
if (pageNumber < 0 || pageNumber >= CountPages(source))
{
throw new ArgumentOutOfRangeException("pageNumber", "The page \"" + pageNumber + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumber); // loads the page
Rectangle pageBound = NativeMethods.BoundPage(stream.Document, p);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return(new System.Windows.Size(pageBound.Width, pageBound.Height));
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf source and a page number.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="pageNumber">Page number, starting at 0</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static BitmapSource ExtractPageAtScale(IPdfSource source, int pageNumber, float zoomFactor = 1.0f, string password = null)
{
if (pageNumber < 0 || pageNumber >= CountPages(source))
{
throw new ArgumentOutOfRangeException("pageNumber", "The page \"" + pageNumber + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumber); // loads the page
var currentDpi = DpiHelper.GetCurrentDpi();
var bmp = RenderPageAtScale(stream.Context, stream.Document, p, zoomFactor, currentDpi.HorizontalDpi, currentDpi.VerticalDpi);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return(bmp.ToBitmapSource());
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf filename and a page number.
/// </summary>
/// <param name="pageNumber">Page number, starting at 1</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static Bitmap ExtractPage(IPdfSource source, int pageNumber, float zoomFactor = 1.0f,
string password = null)
{
var pageNumberIndex = Math.Max(0, pageNumber - 1); // pages start at index 0
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
//TODO below method fails sometimes
var p = new IntPtr();
try
{
p = NativeMethods.LoadPage(stream.Document, pageNumberIndex); // loads the page
}
catch (Exception ex)
{
Logger.Log.Error("Error extracting cover image with MuPDF", ex);
}
var bmp = RenderPage(stream.Context, stream.Document, p, zoomFactor);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return(bmp);
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf filename and a page number.
/// </summary>
/// <param name="pageNumber">Page number, starting at 1</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static Bitmap ExtractPage(IPdfSource source, int pageNumber, float zoomFactor = 1.0f,
string password = null)
{
var pageNumberIndex = Math.Max(0, pageNumber - 1); // pages start at index 0
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
//TODO below method fails sometimes
var p = new IntPtr();
try
{
p = NativeMethods.LoadPage(stream.Document, pageNumberIndex); // loads the page
}
catch (Exception ex)
{
Logger.Log.Error("Error extracting cover image with MuPDF", ex);
}
var bmp = RenderPage(stream.Context, stream.Document, p, zoomFactor);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return bmp;
}
}
public static bool NeedsPassword(IPdfSource source)
{
using (var stream = new PdfFileStream(source))
{
return NeedsPassword(stream.Document);
}
}
/// <summary>
/// Return the total number of pages for a give PDF.
/// </summary>
public static int CountPages(IPdfSource source, string password = null)
{
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
return NativeMethods.CountPages(stream.Document); // gets the number of pages in the document
}
}
/// <summary>
/// Extracts a PDF page as a Bitmap for a given pdf source and a page number.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="pageNumber">Page number, starting at 0</param>
/// <param name="zoomFactor">Used to get a smaller or bigger Bitmap, depending on the specified value</param>
/// <param name="password">The password for the pdf file (if required)</param>
public static BitmapSource ExtractPageAtScale(IPdfSource source, int pageNumber, float zoomFactor = 1.0f, string password = null)
{
if (pageNumber < 0 || pageNumber >= CountPages(source))
{
throw new ArgumentOutOfRangeException("pageNumber", "The page \"" + pageNumber + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumber); // loads the page
var currentDpi = DpiHelper.GetCurrentDpi();
var bmp = RenderPageAtScale(stream.Context, stream.Document, p, zoomFactor, currentDpi.HorizontalDpi, currentDpi.VerticalDpi);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return bmp.ToBitmapSource();
}
}
/// <summary>
/// Gets the page bounds for a given pdf source and a page number.
/// </summary>
/// <param name="source">The PDF source</param>
/// <param name="pageNumber">Page number, starting at 0</param>
/// <param name="password">The password for the pdf file (if required)</param>
/// <returns></returns>
public static System.Windows.Size GetPageBound(IPdfSource source, int pageNumber, string password = null)
{
if (pageNumber < 0 || pageNumber >= CountPages(source))
{
throw new ArgumentOutOfRangeException("pageNumber", "The page \"" + pageNumber + "\" does not exist !");
}
using (var stream = new PdfFileStream(source))
{
ValidatePassword(stream.Document, password);
IntPtr p = NativeMethods.LoadPage(stream.Document, pageNumber); // loads the page
Rectangle pageBound = NativeMethods.BoundPage(stream.Document, p);
NativeMethods.FreePage(stream.Document, p); // releases the resources consumed by the page
return new System.Windows.Size(pageBound.Width, pageBound.Height);
}
}
