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From "Kevin J. Menard, Jr. (JIRA)" <...@tapestry.apache.org>
Subject [jira] Created: (TAPESTRY-1706) Rounded corner service fails with 0 byte image buffer.
Date Wed, 15 Aug 2007 03:57:30 GMT
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 J. Menard, Jr.


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: BufferedImage@4ca30b: 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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