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https://issues.apache.org/jira/browse/TAPESTRY-1706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesse Kuhnert resolved TAPESTRY-1706.
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Resolution: Fixed
Fix Version/s: 4.1.3
Assignee: Jesse Kuhnert
Gif format isn't supported in the jre platform until ver 1.6 so added logic to
detect supported formats and fall back to jpeg when gif isn't available.
> Rounded corner service fails with 0 byte image buffer.
> ------------------------------------------------------
>
> Key: TAPESTRY-1706
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1706
> Project: Tapestry
> Issue Type: Bug
> Components: Contrib
> Affects Versions: 4.1.2
> Environment: MacOS X 10.4
> Reporter: Kevin Menard
> Assignee: Jesse Kuhnert
> Fix For: 4.1.3
>
>
> An image with a background color will fail to be created properly. The
> problem appears to be in the call to ImageIO.write(), which does not put
> anything into the byte buffer.
> The following works:
> http://localhost:8080/rounded?c=blue&w=20&h=20&shadow=false&a=tl
> A simple, rounded corner is produced in blue.
> The following fails:
> http://localhost:8080/rounded?c=blue&bc=red&w=20&h=20&shadow=false&a=tl
> The only addition in the failing case is a non-transparent background color.
> The logged message is the following:
> 23:55:17.230 ERROR! [SocketListener0-0]
> org.apache.tapestry.contrib.services.impl.RoundedCornerService.service(RoundedCornerService.java:138)
> >42> Image generated had zero length byte array from parameters of:
> [color:blue, bgColor:red, width:20, height:20, angle:tl, shadowWidth:-1,
> shadowOpacity:-1.0, side:null, wholeShadow: false, arcWidth: -1.0,
> arcHeight:-1.0
> image: [EMAIL PROTECTED]: type = 1 DirectColorModel: rmask=ff0000 gmask=ff00
> bmask=ff amask=0 IntegerInterleavedRaster: width = 20 height = 20 #Bands = 3
> xOff = 0 yOff = 0 dataOffset[0] 0
> Note that if the service code is modified such that the type is forced to
> PNG, then the second example does render properly (red background and all).
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