Ok ... so I'm still getting issues with the dynamic height on custom components.
I have a background Shape which I construct in the createChildren method and set its graphics. In the updateDisplayList function I clear and redraw the graphics at the new y position. This results in 2 versions of the Shape existing, first at the initial location (the ghost version) and second at the new y location. You can see in the screenshot below, in the 2nd case there there are 2 sets of tiled backgrounds instead of a clear area where the swf asset (dotted circle) is located. It seems myShape.graphics.clear() does nothing. Here's the screenshot: http://img186.imageshack.us/img186/8470/ghostredrawingxv8.jpg Here's the code: public class CustomPanel extends UIComponent { // Children private var progress:Sprite; private var nameContainer:Shape; private var numberContainer:Shape; private var nameLabel:Label; private var numberLabel:Label; // Styles from parent game-header private var backgroundFill:Class; private var backgroundColour:int; private var padding:int; private var nameHeight:int = 28; private var ratingHeight:int = 26; private var nameBackground:BitmapData; private var _nameText:String = ""; private var _numberText:String = ""; public function get nameText():String { return _nameText; } public function CustomPanel(backgroundFill:Class, backgroundColour:int, fontColour:int, ratingFontColour:int, imageWidth:int, padding:int) { super(); this.backgroundFill = backgroundFill; this.backgroundColour = backgroundColour; this.fontColour = fontColour; this.ratingFontColour = ratingFontColour; this.imageWidth = imageWidth; this.padding = padding; } override protected function createChildren() : void { super.createChildren(); if(!nameContainer) { nameContainer = addChild(new Shape()) as Shape; } if(!numberContainer) { numberContainer = addChild(new Shape()) as Shape; } if(!nameLabel) { nameLabel = addChild(new Label()) as Label; nameLabel.truncateToFit = true; nameLabel.setStyle("color", fontColour); } if(!numberLabel) { numberLabel = addChild(new Label()) as Label; numberLabel.setStyle("color", ratingFontColour); } nameBackground = new BitmapData(nameHeight, nameHeight, false) nameBackground.draw(new backgroundFill()); nameLabel.x = numberLabel.x = padding; } override protected function commitProperties():void { super.commitProperties(); nameLabel.text = _nameText; numberLabel.text = _numberText; } override protected function measure():void { super.measure(); measuredWidth = measuredMinWidth = explicitWidth; measuredHeight = measuredMinHeight = ((progress == null) ? explicitWidth : progress.height) + nameHeight + ratingHeight; } override protected function updateDisplayList( unscaledWidth:Number, unscaledHeight:Number ):void { super.updateDisplayList(unscaledWidth, unscaledHeight); nameContainer.graphics.clear(); nameContainer.graphics.beginBitmapFill(nameBackground); nameContainer.graphics.drawRect(0, 0, explicitWidth, nameHeight); nameContainer.graphics.endFill(); numberContainer.graphics.clear(); numberContainer.graphics.beginFill(backgroundColour); numberContainer.graphics.drawRect(0, 0, explicitWidth, ratingHeight); numberContainer.graphics.endFill(); var playerWidth:Number = unscaledWidth; if(playerWidth == 0) { playerWidth = nameLabel.measuredWidth; } else { playerWidth = Math.min(unscaledWidth, nameLabel.measuredWidth) } nameLabel.setActualSize(playerWidth, nameLabel.measuredHeight); numberLabel.setActualSize(numberLabel.measuredWidth, numberLabel.measuredHeight); if(progress != null) { progress.x = explicitWidth/2 - progress.width/2; nameContainer.y = progress.height + padding; } numberContainer.y = nameContainer.y + nameHeight; nameLabel.y = nameContainer.y + nameHeight/2 - nameLabel.measuredHeight/2 - 2; numberLabel.y = numberContainer.y + ratingHeight/2 - numberLabel.measuredHeight/2; } public function setDetails(nameText:String, numberText:String):void { if(progress == null && image == null) { // loaded for the 1st time progress = addChild(new Sprite()) as Sprite; progress.addChild(new Assets.processingAni()); } _nameText = nameText; _numberText = numberText; invalidateProperties(); } --- In flexcoders@yahoogroups.com, "polestar11" <[EMAIL PROTECTED]> wrote: > > Thanks Josh > > This example was a simple case. What I actually want to is have my > component behave like a container where it centres its child items. In > retrospect I would have to extend from the Container class. > > The absoulte size would fix the problem (in that the item re-draws > would occur underneath each other & would not be visible). I was just > worried that I was getting a lot of outdated screen objects that > aren't being cleaned up when drawing underneath each other. But I > suppose it's only 1 graphics layer. > > Cheers > Tracy > > > > --- In flexcoders@yahoogroups.com, "Josh McDonald" <dznuts@> wrote: > > > > Components don't set explicitWidth and explicitHeight on themselves, > they're > > (optionally) set by the container, and actual sizing is set by the > container > > through setActualSize(). > > > > Override measure(), and set measuredWidth and measuredHeight to > match your > > label, and your problems may go away. Also in updateDisplayList you > want to > > set the actual size of the label to the minimu of it's measured size and > > unscaledWidth x unscaledHeight. > > > > -Josh > > > >
