[FLEX-21963] If scrollbar/slider thumb and track are in different coordinate spaces, thumb is placed incorrectly

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Spark: TrackBase
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 11/Nov/09 15:50
• Updated: 15/Apr/11 14:57
• Resolved: 09/Dec/09 14:34

Description

Steps to reproduce:
1. Run this code:
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<s:VScrollBar skinClass="VSBSkin"/>

</s:Application>

VSBSkin.mxml:

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

<fx:Metadata>
[HostComponent("spark.components.VScrollBar")]
</fx:Metadata>

<s:states>
<s:State name="normal" />
<s:State name="disabled" />
<s:State name="inactive" />
</s:states>

<s:Button height="300" id="track"/>

<s:Group y="100">
<s:Button id="thumb"/>
</s:Group>

</s:Skin>

2. Drag the thumb

Actual Results:
Thumb placement fail. (Thumb jumps around erratically).

Expected Results:
Thumb placement win. (Thumb behaves like a scrollbar thumb should).

Workaround (if any):
Take the thumb out of the group.