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Flex SDK
Created: 05/14/08 10:03 AM
Updated: 05/16/08 04:50 PM
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| Component/s: |
Layout - General
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Security Level:
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Public
(All JIRA Users
)
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File Attachments:
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None
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Image Attachments:
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| Severity: |
Incorrectly Functioning
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| Reproducibility: |
Every Time
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| Discoverability: |
Medium
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| Found in Version: |
SDK Flex 3 (Released)
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| Affected OS(s): |
Windows
- XP
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| Steps to Reproduce: |
Consider the following MXML layout:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="100%" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="250" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
It will produce the result shown in attached image 01. Now, let's suppose that the inner box expands its height, growing taller than its container:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="100%" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="450" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
Some scrollbar has to appear.. and it does: see attached image 02. However, it is applied to the outer box. I can't find a way to have its immediate parent box show the scrollbar using percentage size... only specifying an
absolute size I can obtain this behavior:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="330" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="450" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
The result is shown in attached image 03. IMO, applying a percentage size instead of an absolute one should not affect scrollbar behavior.
I'm not sure if this is really a bug - maybe a way does exist to layout components like this using percentage sizes, but I can't find it and documentation doesn't seem to cover this case.
Consider the following MXML layout:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="100%" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="250" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
It will produce the result shown in attached image 01. Now, let's suppose that the inner box expands its height, growing taller than its container:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="100%" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="450" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
Some scrollbar has to appear.. and it does: see attached image 02. However, it is applied to the outer box. I can't find a way to have its immediate parent box show the scrollbar using percentage size... only specifying an
absolute size I can obtain this behavior:
<mx:VBox height="400" width="250" borderStyle="outset">
<mx:Box height="50" width="100%" borderStyle="outset"/>
<mx:VBox height="330" width="100%" borderStyle="outset"
verticalAlign="middle" horizontalAlign="center">
<mx:Box height="450" width="50" borderStyle="inset"/>
</mx:VBox>
</mx:VBox>
The result is shown in attached image 03. IMO, applying a percentage size instead of an absolute one should not affect scrollbar behavior.
I'm not sure if this is really a bug - maybe a way does exist to layout components like this using percentage sizes, but I can't find it and documentation doesn't seem to cover this case.
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| Language Found: |
English
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| Bugbase Id: |
none
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| QA Owner: |
Joan Lafferty
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| Resolved by: |
Cosma Colanicchia
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| Confirmed Version: |
SDK Flex 3 (Released)
- Next Build
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| Participants: |
Cosma Colanicchia and Joan Lafferty
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| Browser: |
Internet Explorer 6.x
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| JDK: |
Sun 1.6.x
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All
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Comments
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Sort Order:
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Bug
Closed
Container's scrollbars behavior is different when specifying size in percentage
There is a post on flexcoders on a similar issue:
http://tech.groups.yahoo.com/group/flexcoders/message/77204?threaded=1&p=1
[...]
You can achieve that by setting minHeight and minWidth on the VBox to
0. By the default, the VBox's minHeight is the sum of all of its
children's measured heights (ditto for minWidth), and the VBox won't
resize to smaller than its minHeight, because the Application (which
is a VBox too) gives preference to minHeight over vertical the
constraints "top" and "bottom" (and percentage-based heights).
[...]