"Robert O'Callahan" <[email protected]> writes: > On Thu, Aug 22, 2013 at 10:34 PM, Thinker K.F. Li <[email protected]>wrote: > >> After a discussion with Kan-Ru, I get more about the problem itself. >> Since the positions of all display items in a nsIScrollableFrame are >> relative to nsIScrollableFrame itself. By keeping display itmes in the >> cache and applying a translation (shift) to the gfxContext before >> calling paint() on display items, we don't need to change the display >> items in the cache. Of course, invalidate regions should be translated >> too. >> > > The offset to apply to each display item would have to be stored somewhere, > and then those offsets will all have to be updated. > > It seems simpler and more efficient to me to make the display items be > relative to their active scrolled root, then nothing will have to be > updated. Matt can explain more of the details of what we think needs to be > done.
It seems very similar to what I told. I would very like to know the details you mentioned. -- Sinker -- 天教懶漫帶疏狂 _______________________________________________ dev-tech-layout mailing list [email protected] https://lists.mozilla.org/listinfo/dev-tech-layout
