[#LPP-4241] Views clip their contents when opacity changed in R5588 IE7 DHTML

OpenLaszlo

Views clip their contents when opacity changed in R5588 IE7 DHTML

Created: 05/Jul/07 11:59 AM Updated: 24/Jul/07 04:48 PM

Component/s:

Components - all

Affects Version/s:

Legals, 4.0.3

Fix Version/s:

4.0.3, Legals

Time Tracking:

Not Specified

Severity:	Critical
Runtime:	DHTML
Flags:	External
Fix in hand:	False

Description

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This sample code demonstrates that views clips their contents when their opacity is changed in R5588 IE7 DHTML:

<canvas id="maincanvas" width="100%" height="100%" validate="false" debug="false" proxied="false" bgcolor="0xEFF1E8">
<debug x="650" y="200" width="800" height="400" fontsize="12"/>
<view id="dv" x="0" y="0" width="200" height="200" bgcolor="red">
<button x="185" text="click me">
<handler name="onclick">
parent.setAttribute("opacity", 0.5);
</handler>
</button>
</view>
</canvas>

All

Comments

Work Log

Change History

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Benjamin Shine - 05/Jul/07 04:06 PM

This bug was reported in legals.

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Philip Romanik - 06/Jul/07 05:23 AM

I verified this issue in TOT legals. This doesn't appear to be a new bug because it's present in build 4745 (4/17/2007) as well. This is an IE/dhtml only issue.

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Benjamin Shine - 20/Jul/07 03:26 PM

This is present in TOT legals as of r5734, in IE7/DHTML.

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Amy Muntz - 20/Jul/07 04:04 PM

Changing to 4.0.3.

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Mamye Kratt - 20/Jul/07 04:25 PM

(4.0 branch (4.0.3) build r5718)
IE6-swf OK
IE6-dhtml OK
IE7-swf OK
IE7-dhtml Broken

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Max Carlson - 23/Jul/07 10:30 AM

This is a simpler testcase that shows the issue - it's an IE7-specific rendering bug:

<canvas id="maincanvas" width="100%" height="100%" bgcolor="white">
<view width="100" height="100" opacity=".5" bgcolor="red">
<view resource="clickregion.swf"/>
</view>
</canvas>

A workaround is to set the size of the view with opacity to be big enough that it doesn't clip its contents (note that views with no width/height specified automatically resize to fit their contents), e.g:
<canvas id="maincanvas" width="100%" height="100%" bgcolor="white">
<view opacity=".5" bgcolor="red">
<view resource="clickregion.swf"/>
</view>
</canvas>

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Max Carlson - 24/Jul/07 04:48 PM

This is an issue with the IE7 renderer. The workaround is to not set the width/height of the container that has alpha (so the view system can resize it to its contents) or set the width/height to be bigger than its contents.

See here: http://blogs.msdn.com/ie/archive/2005/04/26/412263.aspx