PDFsharp & MigraDoc Foundation

How to insert a picture in the PDF file only once and show it on all pages

I saved a invoice of 10 pages without logo.
After that i add to the invoice a jpg of 10Kb as logo.

The result file size grows of 100Kb.

But when I print my document (without use PDFSharp)
on a pdf printer virtual driver such as BullZip, PrimoPDF, PdfFactory,
the file size growns only by 10Kb regardless of the number of pages.

Thanks

Hi!

You do not show any code and no PDF file.
viewtopic.php?f=2&t=832

When using PDFsharp as intended, the image will be included only once, even if it is referenced on many pages.

If you create a single XImage and use that on all pages then there will be no problems.

_________________
Regards
Thomas Hoevel
PDFsharp Team

This is probably my problem: I create view objects for each page

I will try to reuse XImage objects

Thank you very much again

There shouldn't be duplicates either when the same filename is used for all XImage objects.

BTW: do you get an increase of 50 kB for a document with 5 invoices?
If not then maybe there is a different issue.

_________________
Regards
Thomas Hoevel
PDFsharp Team

Unfortunately I create the image from a BITMAPINFO* (C++/CLI)

//PDFSharp does not support 16bit
Bitmap^ AdjustBitDepth(Bitmap^ image)
{
Bitmap^ newImage = nullptr;
switch (image->PixelFormat)
{
case PixelFormat::Format16bppRgb555:
newImage = image->Clone(System::Drawing::Rectangle(0, 0, image->Width, image->Height), PixelFormat::Format32bppRgb);
break;
case PixelFormat::Format16bppRgb565:
newImage = image->Clone(System::Drawing::Rectangle(0, 0, image->Width, image->Height), PixelFormat::Format32bppRgb);
break;
case PixelFormat::Format16bppArgb1555:
newImage = image->Clone(System::Drawing::Rectangle(0, 0, image->Width, image->Height), PixelFormat::Format32bppArgb);
break;
}

if (newImage == nullptr)
return image;

delete image;
return newImage;
}

////////////////////////////////////////////////////////////////////////////

XImage^ FromMetaRecord(BITMAPINFO* pInfo, BYTE* bitmapBytes)
{
Gdiplus::GpBitmap *bitmap = NULL;

Gdiplus::DllExports::GdipCreateBitmapFromGdiDib(pInfo, bitmapBytes, &bitmap);

System::Reflection::MethodInfo^ mi = Bitmap::typeid->GetMethod("FromGDIplus", System::Reflection::BindingFlags::Static | System::Reflection::BindingFlags::NonPublic);

Bitmap ^image = (Bitmap^)mi->Invoke(nullptr, gcnew cli::array<Object^> { IntPtr(bitmap) });

image = AdjustBitDepth(image);

XImage^ xImage = XImage::FromGdiPlusImage(image);

return xImage;
}

I am studying a methods to compare BITMAP objects to reuse the same XImage


Yes, its size grows proportional with page number and image size