sumatrapdfreader
Zoom position resets in book view when switching PDFs
Hi there, please see video attached. In book view mode for ANY pdf, when you zoom in onto the right page:
- with the center column off-screen,
- and a high enough zoom-level that there is still space to scroll right,
the page shift to the furthest right it can when switching PDFs. I've tested this with a couple PDFs and they all exhibit this behaviour, it's quite frustrating when I need to switch back and forth and the position is different.
sumatrapdfzoombookviewerrorr.webm
Not sure if that's what you see but I got the following to reproduce:
- open pdf,
Ctrl + 8, zoom really big, scroll right so that only second page is visible but not y-scrolled to the end - switch to home tab
- switch back to pdf tab
Another way to repro is: close and re-open to restore state.
The page will be scrolled all the way to the right. Also Happens in Ctrl + 7.
Looks like dm->GetScrollState() doesn't return the right page / scroll position or SetScrollState() doesn't restore it properly.
Pretty sure the problem is: newPt.x += viewPort.x; in DisplayModel::SetScrollState.
It doesn't take into account 2-page layout. Should subtract the width of previous page.