I suppose not, but setActualSize is mentioned in the custom components doc and applies to custom controls as well as containers.
________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Josh McDonald Sent: Monday, June 02, 2008 8:54 PM To: [email protected] Subject: Re: [flexcoders] The best way to subclass Container or Canvas? Children being measured as 0x0, various other issues Looks like that was the root of my problems. I think I need to get all this info sorted in my head, and write up an article on the finer points of container creation - there doesn't seem to be a lot of info out there on the web about custom container components. Now, to debug the problem with overriding get numChildren! :D Is it a bad idea to create a builder project for the SDK source in order to enable "mark occurences"? That's a very useful builder feature when you're reading the framework code. -J On Tue, Jun 3, 2008 at 1:32 PM, Josh McDonald <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: Yeah, I'm trying to get it working from Canvas, and then see how far up the tree I can go while it still works. I've just now recompiled a bunch of changes after doing much diving into the order of various events, methods, and frame ticks. My main problem seems to have been not knowing about setActualSize() - I couldn't for the life of me figure out how a component went from being measured to having an actual width and height without setting explicitWidth and explicitHeight and hence being taken out of the list for invalidateSize().... If that were mentioned somewhere as a see-also in the docs for UIComponent.width / height, UIComponent.invalidateSize() or UIComponent.measure() things wouldn've been a lot easier (not to mention the cursing). Hopefully switching to setActualSize() will turn on measure() all the way down my tree, I've been trying all day to get a vbox added to my inner Canvas via a state switch to be properly measured. -J On Tue, Jun 3, 2008 at 1:16 PM, Alex Harui <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > wrote: Don't know how to respond to this. If you need 80% of Canvas, derive from Canvas, otherwise derive from Container. Look at how we did Canvas and Panel to see how content and rawChildren are handled. Post a test case if there are still problems. ________________________________ From: [email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Josh McDonald Sent: Monday, June 02, 2008 4:50 PM To: [email protected] <mailto:[email protected]> Subject: [flexcoders] The best way to subclass Container or Canvas? Children being measured as 0x0, various other issues Hey guys, I've got a component that extends Canvas (for borders etc), adds its own chrome using rawChildren.addChild, and overrides the other addChild / removeChild methods delegating them to an internal Canvas. This is extended by other developers to build MXML components. I'm having a whole bunch of problems with the contentCanvas and its children not measuring properly, and ignoring sizing I do give it. Also, if I override numChildren I get out-of-bounds exceptions somewhere in framework code that's called from a callLater, of which I have no idea where it's being dispatched or why it has an incorrect _firstChild What I'd like is to have the contentCanvas look after everything it contains, report a useful measuredWidth and measuredHeight so I can use them to measure my own component, but for it to still do as its told when I explicitly give it a width and height in updateDisplayList() Clearly I'm doing something seriously wrong, but I can't for the life of me figure out how I *should* be doing all this, so any pointers are definitely appreciated! I'd like to avoid extending UIComponent and re-implementing the hundred or so methods in IContainer, IRawChildren, IFocusManager, IChildList, etc etc etc only to have it not work becuase I've repeated the same mistake. -J -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> -- "Therefore, send not to know For whom the bell tolls. It tolls for thee." :: Josh 'G-Funk' McDonald :: 0437 221 380 :: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
