On 10 Jun 2008, at 2:36 AM, Adam R. Maxwell wrote: > In article <[EMAIL PROTECTED]>, > "Colin A. Smith" <[EMAIL PROTECTED]> wrote: > >> I've found that when using the trackpad to scroll in a >> BDSKMainTableView, the responsiveness can be poor and jumpy. I traced >> the problem to rebuildTrackingRects getting fired after scrolling to >> each new position, and then taking a relatively long time to execute. > > What did the profiles look like? Was it memory or processor > intensive? > I'm curious because I've observed tracking rects as a minor > performance > hit on FileView as well, mainly due to Leopard creating a large number > of temporary objects. > >> The solution I came up with was to delay calling rebuildTrackingRects >> until after the user moves the mouse for the first time after an >> rebuild is needed. >> >> Because NSWindow objects by default do not respond to NSMouseMoved >> events by default, the easy way to do this is to toggle enable >> acceptsMouseMovedEvents until the user moves their mouse, then have >> the corresponding mouseMoved message disable acceptsMouseMovedEvents >> and call rebuildTrackingRects. > > Clever :). Does it help at all to do something like [[OFMessageQueue > mainQueue] queueSelectorOnce:... for rebuildTrackingRects? That might > be more future-proof. > > -- > Adam >
Unfortunately this won't do it. When you'd use this, tracking rects are only updated after a mouse moved while the table is active. There are many more situations where the tracking rects need to be updated. I've had lots of difficulties with non-updated tracking rects in Skim, even when I was convinced I had covered all possible updates I didn't. Christiaan ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Bibdesk-develop mailing list Bibdesk-develop@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bibdesk-develop
