> On 12 May 2015, at 08:33, Roland King <r...@rols.org> wrote: > > >> On 12 May 2015, at 14:43, Graham Cox <graham....@bigpond.com> wrote: >> >> I’m exploring the use of the new IB_DESIGNABLE macro to preview a custom >> view live in IB. >> >> It keeps complaining that my view is taking too long to draw, over 200mS, >> which seems to be a limit built into IB. However, when I measure the time >> myself for drawing, it’s nowhere near this long - 10mS max, typically 2mS. >> Because of this constant and apparently erroneous complaint, IB doesn’t show >> my custom view. I’ve even tried to do some minimal drawing (just filling the >> dirty rect) for just the Interface Builder target, but I get the same >> problem, so it’s pretty clear that the timeout is nothing to do with my >> drawing. >> >> At other times IB complains that the rendering agent “crashed”, though it’s >> actually an exception from the bowels of Core Graphics. My usual drawing >> code never triggers the same exception, only when it’s drawn by the IB >> rendering agent. >> >> Has anyone been able to make this work? >> >> —Graham > > I have been able to make it work but it’s not been a trouble-free experience. > There was at least one version of Xcode I couldn’t make it work at all. I’ve > had other times that a quit/restart was needed to get it going. > > I suspect that this is not your problem but I will mention I have a bug > report out that the IB render code calls initWithFrame: which isn’t required > in Swift and I hadn’t in one case implemented it, so it just crashed, or hung > or both. You’re most-likely in obj-c so that is unlikely to be your issue. > You could override it anyway just for good measure. > > The docs and the WWDC video say the custom control must be in a framework but > I believe that’s not actually true, or no-longer true as of the released > Xcode 6? There was a note somewhere about this but I can’t find it now and > neither can google.
Correct, the custom control does not have to be in a framework. I should clarify from my previous e-mail that my custom control is not in a Framework, but it does call into a framework to do the drawing which is unrelated to any IB_DESIGNABLE requirements. Kevin _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
