Thanks again for replying! I was able to get everything working with your instructions :) I also applied the same method to ignore backface-visibility:hidden; This check is done here: https://dxr.mozilla.org/mozilla-central/rev/e5a10bc7dac4ee2453d8319165c1f6578203eac7/layout/base/nsDisplayList.cpp#6018
Hopefully I'm now only excluding elements with display:none and elements which aren't visible because their outside the visible part of a scrollable HTML element. Another thing I realized I should do was calling GetPrimaryFrame() on the dom::Element* I got from GetFramesForArea(). This way I could filter only the primary frames, which correspond to the HTML elements. Now I no longer have duplicate HTML tags in my output. This also filters out the list decoration of ul and ol elements and the scrollbars. And sorry about the video! I forgot to turn that on. But the video wasn't very good anyway. Thanks for the help and I'll post my final result when I've got something to show. On Thursday, 5 May 2016 01:59:34 UTC+2, [email protected] wrote: > On Monday, May 2, 2016 at 4:55:13 PM UTC-4, [email protected] wrote: > > Does it means I also have to modify nsDisplayList.h in order to add the > > flag to nsDisplayListBuilder? I'm still a bit unsure how to add a flag to > > nsDisplayListBuilder. > > Just add a new member variable, like mIgnoreVisibility (and a getter/setter > for it, if it's not public). > > > In my brief testing I noticed that overriding the pointer-events check in > > nsDisplayList::HitTest() allows me to also retrieve elements with > > pointer-events:none. Though strangely no iframes with pointer-events:none. > > Those are still left out. > > Ah, there is a separate check for iframes here [1]! > > > I made this screen recording to give an idea of my end goal: > > https://youtu.be/EtH1MMDorKA > > The video is private, I can't access it. > > Cheers, > Botond > > [1] > https://dxr.mozilla.org/mozilla-central/rev/369a5ee3a2880a4a98df3a00bf3db8d8f36b181b/layout/generic/nsSubDocumentFrame.cpp#379 _______________________________________________ dev-tech-layout mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-layout
