I've implemented something similar on a project. You need to define dragEnter, dragExit,dragDrop events like so:
addEventListener(DragEvent.DRAG_ENTER, dragEnterHandler); addEventListener(DragEvent.DRAG_EXIT, dragExitHandler); addEventListener(DragEvent.DRAG_DROP, dragDropHandler); And in your dragEnterHandler you can 'accept' the drag and on dragDropHandler add a child to your canvas based on the data being dragged in. A great tutorial: http://www.adobe.com/devnet/flex/quickstart/adding_drag_and_drop/ On Wed, Nov 18, 2009 at 11:08 AM, Jeffry Houser <[email protected]> wrote: > > > > The Scrap blog canvas is most likely... well, a canvas or container. > Dragging items from a list onto the canvas would just be like adding a new > child to the canvas [I presume]. I've used scrap blog very little, but I > would not be surprised if they have wrote a "Z-order manager" style class to > control what shows on top of other things. > > If you drag an item off the list based class, I Would expect the > selectedIndex would reset to -1; the unselected state. > > Loud Jazz wrote: > > > > Thanks. The component I'm looking for can be found at scrapblog.com, the > user can drag and drop items from the list onto the 'canvas'. The items can > overlap and layer. Presumably when adding a new layer, the corresponding > bound object in the data provider is at the highest index. > > ------------------------------ > To: [email protected] > From: [email protected] > Date: Tue, 17 Nov 2009 19:50:38 -0700 > Subject: Re: [flexcoders] Layered ListBase component > > > As far as I can tell, List does almost exactly what you are after. The > only caveat is your last sentence 'The depth of the display objects is bound > to the data provider indexing.'. > > The ItemRenderers of all List controls are re-used within the control, so > the display objects are not at all connected to the index. Nor would you > want to, if you had hundreds or thousands of items in your control. It seems > as though this is a somewhat surmountable issue. > > Check out the 'dragEnabled', 'dropEnabled' and 'dragMoveEnabled' properties > of the list controls for more information. > > > On Tue, Nov 17, 2009 at 10:27 AM, method_air <[email protected]> wrote: > > > Hello, > > I am looking for a component (presumably extending ListBase) that allows > objects to be dropped inside of it, and positioned where they are dropped > (kind of like a stage or root timeline). The depth of the display objects is > bound to the data provider indexing. > > Does such a component exist? > > Thanks, > > Philip > > > > > > ------------------------------ > Use Hotmail to send and receive mail from your different email accounts. Find > out how. <http://clk.atdmt.com/UKM/go/186394592/direct/01/> > > > -- > Jeffry Houser, Technical Entrepreneur > Adobe Community Expert: > http://tinyurl.com/684b5hhttp://www.twitter.com/reboog711 | Phone: > 203-379-0773 > -- > Easy to use Interface Components for Flex > Developershttp://www.flextras.com?c=104 > --http://www.theflexshow.comhttp://www.jeffryhouser.com > -- > Part of the DotComIt Brain Trust > > >
