#781 Avoid flickering in updating pdf

[Anonymous]

Hi,

First, I would like to thank you for the awesome project.

I would like to make a suggesting regarding the pdf update. Currently, whenever you compile, the pdf preview will flicker when it updates, which is rather distracting. It would be nice if it updates seamlessly. This is possible, and has been done, for example, in the Sumatra pdf viewer. The code for it could be viewed here:

https://code.google.com/p/sumatrapdf/issues/detail?id=1065

Best,
Lang

[Tim Hoffmann]

Do you mean the internal (windowed or embedded) PDF Viewer or the preview (inline/bottom/panel/tooltip)?

Which version of TXS are you using?

[Lang]

I mean the internal PDF preview on the right. I'm using the latest version (2.8.6).

Thanks.

[Lang]

@Tim Hoffmann: Do you think it would be doable? It would be fantastic! Thanks.

[Tim Hoffmann]

It is definitively doable, but I'm not sure on the amount of effort it takes. Anyway, it is not a high priority to me and therefore I don't have the time to look into this in the forseeable future. There's just too much else to do around TXS.

[Lang]

Thanks for your reply. What a pity though. The changes on Sumatra only takes 10 lines of codes (add some freeze/lock to the repainting or smth like that), so I was hoping that it would take around the same amount of effort here. You could check out the changes at:

https://code.google.com/p/sumatrapdf/source/diff?spec=svn2212&old=2207&r=2212&format=unidiff&path=%2Ftrunk%2Fsrc%2FDisplayModel.cc

https://code.google.com/p/sumatrapdf/source/diff?spec=svn2212&old=2207&r=2212&format=unidiff&path=%2Ftrunk%2Fsrc%2FDisplayModel.h

https://code.google.com/p/sumatrapdf/source/diff?spec=svn2212&old=2211&r=2212&format=unidiff&path=%2Ftrunk%2Fsrc%2FSumatraPDF.cpp

Thanks.