That would be interesting, Josh.
For what it's worth, if I add the following back to the measure()
method of MyContainer (a stand-in for TiledCanvas):
measuredMinWidth = measuredWidth;
measuredMinHeight = measuredHeight;
and wrap it as follows:
<mx:Canvas width="100%" height="100%" horizontalScrollPolicy="auto"
verticalScrollPolicy="auto">
<comp:MyContainer width="100%" height="100%" borderStyle="solid"
horizontalScrollPolicy="auto" verticalScrollPolicy="auto">
<mx:Button label="400x400" minWidth="400" minHeight="400"/>
</comp:MyContainer>
</mx:Canvas>
then the scrollbar behaviour is fine - i.e. I can scroll to view the
entire MyContainer, including padding. This is a bit ironic, since my
quest (encouraged by Alex) has been to eliminate the need for any such
wrapper. On the other hand, the same workaround did not work (yet) for
the full TiledCanvas (I've got double scroll bars).
Perhaps your idea of a generic scroller container is the right
approach. For bonus points, it could encompass the other custom
component that interests me, the one that scales down to fit :)
Imagine resizePolicy = SCALE | SCROLL
On Wed, Jul 23, 2008 at 6:55 AM, Josh McDonald <[EMAIL PROTECTED]> wrote:
> It's something I keep needing, so very soon I'm going to cook up an example
> of a "one-child-only" container that will behave the way I think they should
> regarding vertical scrollbars. Will post a link :)
>
> -Josh
>
> On Wed, Jul 23, 2008 at 11:12 PM, Richard Rodseth <[EMAIL PROTECTED]>
> wrote:
>>
>> Yes, but that doesn't look so good and wastes real estate. I think I
>> can live with the overlay, given the padding I have.
>>
>> On Wed, Jul 23, 2008 at 12:15 AM, Alex Harui <[EMAIL PROTECTED]> wrote:
>> > If you set verticalScrollPolicy="on" then the scrollbars will be
>> > factored in
>> >
>> >
>> >
>> > ________________________________
>> >
>> > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
>> > Behalf Of Josh McDonald
>> > Sent: Tuesday, July 22, 2008 10:13 PM
>> > To: flexcoders@yahoogroups.com
>> > Subject: Re: [flexcoders] Measurement and scrolling
>> >
>> >
>> >
>> > The only way to not have scrollbars over the content (or to only have
>> > vertical, but not all the time) is to do scrollbar management yourself
>> > rather than relying on Flex's inbuilt methods of handling it. This is a
>> > decision made by the Flex team to avoid having to double measure() stuff
>> > when adding scrollbars to a container.
>> >
>> > -Josh
>> >
>> > On Wed, Jul 23, 2008 at 3:02 PM, Richard Rodseth <[EMAIL PROTECTED]>
>> > wrote:
>> >
>> > Below is code for a scrolling container of one child - a highly
>> > simplified version of the tiling container I've been wrestling with
>> > off and on for way too long now. The component below sizes the
>> > first/only child to fit within it, with some padding, but respects the
>> > minimums of the child, adding scroll bars if necessary.
>> >
>> > I discovered this evening that setting measuredMinWidth/Height in the
>> > measure() method was what was messing things up. With that removed,
>> > this component (and the more complex tiler) behaves properly, except
>> > that the scollbars are drawn over the right/bottom padding.
>> >
>> > What is the appropriate way to compensate for that? Adding a fudge
>> > factor to the measured values, or removing it from the value passed to
>> > setActualSize in UDL had no effect at all.
>> >
>> > Thanks, I'm *really* close now...
>> >
>> > - Richard
>> >
>> >
>> > public class MyContainer extends Container
>> > {
>> > private static const PADDING:Number = 10;
>> >
>> > public function MyContainer()
>> > {
>> > super();
>> > }
>> >
>> >
>> > override protected function measure():void
>> > {
>> > var child:UIComponent = this.getChildren()[0] as
>> > UIComponent;
>> >
>> > var childWidth:Number =
>> > child.getExplicitOrMeasuredWidth();
>> > var childHeight:Number =
>> > child.getExplicitOrMeasuredHeight();
>> >
>> > measuredWidth = childWidth + 2 * PADDING ;
>> > measuredHeight = childHeight + 2 * PADDING ;
>> > }
>> >
>> >
>> > override protected function
>> > updateDisplayList(unscaledWidth:Number,
>> > unscaledHeight:Number):void
>> > {
>> > super.updateDisplayList(unscaledWidth, unscaledHeight);
>> >
>> > var child:UIComponent = this.getChildren()[0] as
>> > UIComponent;
>> >
>> > var newWidth:Number = Math.max(unscaledWidth - (2
>> > *
>> > PADDING) ,
>> > child.minWidth);
>> > var newHeight:Number = Math.max(unscaledHeight -
>> > (2 *
>> > PADDING) ,
>> > child.minHeight);
>> >
>> > child.setActualSize(newWidth, newHeight);
>> > child.move(PADDING, PADDING);
>> > }
>> > }
>> > }
>> >
>> > <?xml version="1.0" encoding="utf-8"?>
>> > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
>> > layout="absolute" minHeight="0" minWidth="0"
>> > verticalScrollPolicy="off" horizontalScrollPolicy="off"
>> > xmlns:comp="comp.*"
>> > >
>> >
>> > <comp:MyContainer width="95%" height="95%" borderStyle="solid"
>> > horizontalScrollPolicy="auto" verticalScrollPolicy="auto">
>> > <mx:Button label="400x400" minWidth="400"
>> > minHeight="400"/>
>> > </comp:MyContainer>
>> >
>> > </mx:Application>
>> >
>> > ------------------------------------
>> >
>> > --
>> > Flexcoders Mailing List
>> > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
>> > Search Archives:
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>> > Links
>> >
>> >
>> >
>> >
>> > --
>> > "Therefore, send not to know For whom the bell tolls. It tolls for
>> > thee."
>> >
>> > :: Josh 'G-Funk' McDonald
>> > :: 0437 221 380 :: [EMAIL PROTECTED]
>> >
>> >
>>
>> ------------------------------------
>>
>> --
>> Flexcoders Mailing List
>> FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
>> Search Archives:
>> http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups Links
>>
>>
>>
>
>
>
> --
> "Therefore, send not to know For whom the bell tolls. It tolls for thee."
>
> :: Josh 'G-Funk' McDonald
> :: 0437 221 380 :: [EMAIL PROTECTED]
>
