[FLEX-22664] Spark layouts inconsistently round when centering elements

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK 4.0 (Release)
• Component/s: Spark: Layout
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Browser: Firefox 3.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 07/Jan/10 12:24
• Updated: 28/Feb/10 19:47
• Resolved: 07/Jan/10 15:12

Description

Steps to reproduce:
1. Compile and run:

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">

<s:VGroup verticalAlign="middle" horizontalAlign="center" width="501" height="501">
<s:Button label="1" alpha="1.00" />
<s:Button label="1" alpha="0.00" />
<s:Button label="1" alpha="0.00" />
<s:Button label="1" alpha="1.00" />
</s:VGroup>

<mx:VBox verticalAlign="middle" horizontalAlign="center" width="501" height="501">
<s:Button label="1" alpha="0.00" />
<s:Button label="1" alpha="1.00" />
<s:Button label="1" alpha="1.00" />
<s:Button label="1" alpha="0.00" />
</mx:VBox>

</s:Application>

Actual Results:

The buttons in the halo VBox don't horizontally line up with the buttons in the VGroup.

VerticalLayout/HorizontalLayout - minor axis alignment - rounds up (differs from halo)
VerticalLayout/HorizontalLayout - major axis alignment - rounds down (same as halo)

Expected Results:

The buttons should all be horizontally aligned equally.

VerticalLayout/HorizontalLayout - minor axis alignment - rounds down (same as halo)
VerticalLayout/HorizontalLayout - major axis alignment - rounds down (same as halo)

Workaround (if any):