This just sets the clip bounds. You will receive an onDraw(Canvas) call as usual and everything you draw outside of the clip bounds will be ignored. You can do ahead-of-time skips if you know you are performing intensive computations in onDraw() (which you should not be doing anyway) but it's most often not worth it.
On Fri, Mar 6, 2009 at 6:37 PM, FBear <[email protected]> wrote: > > android.view.View.invalidate(int l, int t, int r, int b) can mark the > the area defined by the rect (l,t,r,b) as needing to be drawn. > But how does View update only the dirty area specified by the rect? > Is it wise enough to redraw only the dirty area even if the onDraw is > customized to update the whole view? > > I read some sources and searched in google developer group. No answer > to this question was found. > > Would anybody please kindly explain that to me? > > Thanks in advance. > > FBear > > > > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
