Not according to this post a day or so ago: http://www.mail-archive.com/[EMAIL PROTECTED]/msg93835.html
Can anybody from Adobe clear this up? -J On Mon, Jun 2, 2008 at 10:50 AM, Michael Labriola <[EMAIL PROTECTED]> wrote: > > I see a few problems with the code. UIComponent does not have any > default implementations for sizing, display, etc. As Josh mentions, > Container does have these implementations, however, this is likely > overkill for what you need. However, UIComponent.addChild does add > things to the display list just fine.... > > That said, your ScaleToFitContentHolder class extends UIComponent. > UIComponent does not have an implementation of updateDisplayList. > updateDisplayList is where a component sizes it's children. > Therefore anything you add to that content holder is not going to go > through the normal flex measurement and sizing process. > > You also call invalidateSize in your code quite a few times, which > would make sense, but your measure methods just call the super > class.... which sets it to 0 width and height unless you set > explicit values in the UIComponent default implementation. > > So, basically, UIComponent is fine, it will work well if you handle > these issues. If you want an implementation that handles these > things (and potentially does a lot of other stuff you don't need or > want) you could extend Container or one of its descendants. > > HTH, > Labriola > > --- In [email protected] <flexcomponents%40yahoogroups.com>, > "Josh McDonald" <[EMAIL PROTECTED]> > wrote: > > > > > My Bad buddy, sorry! > > > > UIComponent.addChild is an inherited Flash thing, not part of > Flex, and when > > you use it if it works at all, things don't go into Flex's display > tree > > properly, and all sorts of pain ensues. Try extending Canvas > instead of > > UIComponent. The magic you need lives in Container. > > > > -J > > > > > > On Sun, Jun 1, 2008 at 7:31 AM, Richard Rodseth <[EMAIL PROTECTED]> > wrote: > > > > > I'd love to wrap up this task. Does anyone have any other > suggestions? > > > > > > > > > On Tue, May 27, 2008 at 8:24 PM, Richard Rodseth > <[EMAIL PROTECTED]<rrodseth%40gmail.com>> > > > > wrote: > > > > I'm afraid I'm still struggling with this. The classes below > work > > > > (more or less) if I supply a large button as "content", but if > I try a > > > > VBox it appears to shrink to nothing. Any ideas? Hopefully the > > > > formatting survived. > > > > > > > > <view:ScaleOrCenterView width="100%" height="100%" > > > > > <mx:VBox borderStyle="solid" borderColor="red" > > > > horizontalScrollPolicy="off" verticalScrollPolicy="off"> > > > > <mx:Button label="Test" width="400" height="400"/> > > > > </mx:VBox> > > > > </view:ScaleOrCenterView> > > > > > > > > > > > > [DefaultProperty("content")] > > > > public class ScaleOrCenterView extends UIComponent > > > > { > > > > private var _contentHolder:ScaleToFitContentHolder = new > > > > ScaleToFitContentHolder();; > > > > private var _content:UIComponent; > > > > > > > > public function ScaleOrCenterView() > > > > { > > > > super(); > > > > } > > > > > > > > override protected function createChildren():void { > > > > super.createChildren(); > > > > this.addChild(_contentHolder); > > > > } > > > > > > > > [Inspectable] > > > > public function set content(value:UIComponent):void { > > > > if (_content != null) { > > > > _contentHolder.removeChild(_content); > > > > } > > > > _content = value; > > > > if (_content != null) { > > > > _contentHolder.addChild(_content); > > > > } > > > > this.invalidateSize(); > > > > } > > > > > > > > override protected function updateDisplayList > (unscaledWidth:Number, > > > > unscaledHeight:Number):void > > > > { > > > > super.updateDisplayList(unscaledWidth, unscaledHeight); > > > > > > > > var contentWidth:Number = _content.getExplicitOrMeasuredWidth > (); > > > > var contentHeight:Number = _content.getExplicitOrMeasuredHeight > (); > > > > > > > > var xScale:Number = (unscaledWidth / contentWidth); > > > > var yScale:Number = (unscaledHeight / contentHeight); > > > > > > > > _contentHolder.setActualSize(unscaledWidth, unscaledHeight); > > > > > > > > _contentHolder.allowInvalidateSize = false; > > > > if (xScale < 1 || yScale < 1) { > > > > _contentHolder.scaleX = xScale > > > > _contentHolder.scaleY = yScale > > > > } else { > > > > _contentHolder.scaleX = 1.0; > > > > _contentHolder.scaleY = 1.0; > > > > } > > > > _contentHolder.allowInvalidateSize = true; > > > > > > > > } > > > > > > > > } > > > > > > > > public class ScaleToFitContentHolder extends UIComponent > > > > { > > > > public var allowInvalidateSize:Boolean = true; > > > > > > > > public function ScaleToFitContentHolder() > > > > { > > > > } > > > > > > > > override protected function measure():void > > > > { > > > > super.measure(); > > > > } > > > > > > > > override public function invalidateSize():void > > > > { > > > > if (allowInvalidateSize) > > > > super.invalidateSize(); > > > > } > > > > > > > > } > > > > On Mon, May 26, 2008 at 9:02 PM, Alex Harui <[EMAIL PROTECTED]<aharui% > 40adobe.com>> > > > wrote: > > > >> One way is to block invalidateSize when scaling the child. See > > > >> ListBaseContentHolder > > > >> > > > >> > > > >> > > > >> ________________________________ > > > >> > > > > > > > > > > > > > > > > > > -- > > "Therefore, send not to know For whom the bell tolls. It tolls for > thee." > > > > :: Josh 'G-Funk' McDonald > > :: 0437 221 380 :: [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]
