Michael R wrote: > 1. "Over it" means that there exists a point on the page such that if I > point the mouse on the point "mouseover" event would firef for that node
Yeah... You can sort of approximate that with some hit testing using GetFrameForPoint, I think. > ..Analogously if I'd click the mouse "click" event would fire for that node. Right. > 2. <div style="height: 0"> > <div style="height: 100px">Text</div> > </div> > <div style="height: 100px; background: white; opacity: 0.3"></div> > > > The only node here for which mouseover events will fire is the div > with opacity:0.3. > > Why is that ? Because of style="height:0" ? Because the div with a white background sits on top of the other content (because the outer div there has height:0, yes). Check how this renders to see what's going on. In this case, mouse events will only go to the div with the background. > 3. I looked at GetFrameForPoint and I found there only one visibility check > : frame->GetStyleVisibility()->IsVisible() The z-indexing and such is handled somewhere in there too, I thought... maybe it's in the view system. All this code is long gone in Gecko 1.9, so I don't recall all that well, to be honest. > I wonder if the style visibility reflects other reasons for node being > invisible (e.g. "display: none") ? display:none means no frame is created at all. -Boris _______________________________________________ dev-embedding mailing list [email protected] https://lists.mozilla.org/listinfo/dev-embedding
