https://bugs.documentfoundation.org/show_bug.cgi?id=156477
Bug ID: 156477
Summary: PDF export: Fit Width / Visible make the PDF open with
the target large page scrolled down in PDF viewer
Product: LibreOffice
Version: Inherited From OOo
Hardware: All
OS: All
Status: UNCONFIRMED
Keywords: easyHack, filter:pdf, skillCpp
Severity: normal
Priority: medium
Component: Printing and PDF export
Assignee: [email protected]
Reporter: [email protected]
1. Create a new text document;
2. Make its page size A3;
3. File->Export As->PDF;
4. On Initial View tab, keep "Open on page" -> 1, and choose "Fit width";
5. Continue exporting.
=> opening the resulting PDF in e.g. Acrobat Reader will show the first page
not from top, but from its middle. Same thing would happen for "Fit visible".
This is a wrong implementation from start, using /FitBH with a hardcoded
vertical offset "g_nInheritedPageHeight" (A4 portrait hardcoded value) for "Fit
visible"; and also using the same hardcoded value for /FitH (Fit width); when
the actual vertical offset there must come from the actual page itself - or
possibly be omitted, as the standard tells "A null value for *top* specifies
that the current value of that parameter shall be retained unchanged".
Code pointer: PDFWriterImpl::emitCatalog in vcl/source/gdi/pdfwriter_impl.cxx.
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