[Qt-interest] Merging / printing multiple pdf's

[Oliver Demetz]

Is there any need to do this in Qt?
If not then there are plenty of perfect packages out there that do your 
job perfectly, eg Ghostscript.
Regards,
Oliver

hristopher Rasch-Olsen Raa schrieb:
> Hi,
> 
> In an application I'm writing I have a situation where I have to take X number 
> of different pdf's and send them to a printer. The way it is solved today is 
> that the application opens each and every one of the pdf's using 
> QDesktopServices and then the user have to press 'Print' from whichever pdf-
> reader they use. This however is not an optimal solution. Try opening a couple 
> of hundred singlepage pdf's at the same time and experience some _real_ lag.
> 
> What I'd like to do is to take all the different pdfs that need printing and 
> merge them into one, and then open them using QDesktopServices OR just do some 
> behind the scenes magic and send it all directly to a printer without opening 
> an external application.
> 
> A while pack I approached this list with almost the same question, and some 
> helpful person pointed me to the 'poppler'-library as featured in Qt 
> Quarterly. I looked into that but got the impression that it was only meant 
> for viewing pdf's, not really manipulating them. Am I mistaken?
> 
> I did a small experiment where I rendered the pages from the different pdf into 
> an array of QImages (using poppler), created a QPrinter and QPainter and 
> painted all of the images to pages. This worked ok, with one small exception; 
> the content of the pdfs did not have the same positions as when I printed them 
> by themselves using an external pdf-reader. These are forms, so the content 
> really should be placed where it is supposed to be. :p
> 
> Have anyone tried to do, or have done, anything similar to this? If so, what 
> have worked for you? Do any of you have any other pointers for me?
>