[Okular-devel] Which class is responsible for placing 'Document' pages onscreen?

[Albert Astals Cid]

A Dimarts, 15 de novembre de 2011, Stephen Anthony vàreu escriure:
> I've been looking over the codebase for the past few hours, but I can't
> seem to find which class is responsible for this.  A little explanation
> first:
> 
> I'm trying to implement the oft-requested feature of no spacing between
> facing pages, to more accurately emulate the behaviour of reading a book
> or magazine.

Cool :-)

> 
> Anyway, I thought I found the code several times, but each time it seems
> that the class I'm considering isn't being used.  It seems that large
> parts of the codebase are dead code (or at least I couldn't figure out how
> they are ever used).

That's not true, i doubt we have any considerable amount (>0.1%) of dead code.

> I tried working from the absolute beginning, and tracing function calls.
> I can see how the 'shell' is created.  I understand how 'Document' class
> works.  And I can see that Document::openDocument is being called.  The
> problem is:
> 
> 1)  I can't find anywhere in the code that actually calls this method (but
> I know it *is* called because of a print statement

Have you tried using grep?
part.cpp:1151: ok = m_document->openDocument( fileNameToOpen, url(), mime );
 
> 2)  I can't see the relationship between the shell and the document class.

The shell holds a part, the part holds a document.

> Specifically, once the document is created, its pages are being rendered to
> the UI centralWidget somehow.  But I can't find the code that actually does
> this.

The rendering code is in pageview and friends.

Albert

> 
> Please help me if you can.  I've been looking at this for the past 4 hours
> with no luck.
> 
> Thanks,
> Steve A.
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