[#DOTCMS-330] transparent png won't upload

dotCMS

transparent png won't upload

Created: August 22, 2007 9:40 AM Updated: March 18, 2010 3:03 PM

Component/s:

a. Unknown

Affects Version/s:

1.5.0

Fix Version/s:

None

Time Tracking:

Original Estimate:

Not Specified

Remaining Estimate:

0 minutes

Time Spent:

15 minutes

File Attachments:

None

Image Attachments:

1. leftRound.png
(0.5 kb)

2. leftRound.png
(0.3 kb)

Description

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When we use Illustrator of Photoshop to create transparent 8 bit png files the File Upload will not upload the image. If we turn off transparency the file will upload.

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Jason Tesser - September 11, 2007 3:14 PM

Talked to Brad about Issue and it is pnly a Problem with Photoshop. He is using CS3.

Not an issue with Fireworks.

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Maria Bouza - September 14, 2007 3:20 PM

Brad,

Can you please attach one file that is not working for you so we can use it to test?

Thanks
Maria

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Brad Rice - September 14, 2007 3:34 PM

Sure, this is the one we were trying to upload the other day. I just tried
it again and it won't upload. We ended up flattening it and saving it as a
gif file to get it to upload. We would rather use png, and sometimes with
transparency.

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Maria Bouza - September 17, 2007 11:14 AM

Brad,

I tested with your png and it didn't work. I got this error on the log:
java.lang.IllegalArgumentException: LUT has improper length!
        at javax.imageio.ImageTypeSpecifier$Indexed.<init>(ImageTypeSpecifier.java:866)
        at javax.imageio.ImageTypeSpecifier.createIndexed(ImageTypeSpecifier.java:955)
        at com.sun.imageio.plugins.png.PNGImageReader.getImageTypes(PNGImageReader.java:1463)
        at com.sun.imageio.plugins.png.PNGImageReader.readImage(PNGImageReader.java:1348)
        at com.sun.imageio.plugins.png.PNGImageReader.read(PNGImageReader.java:1530)
        at javax.imageio.ImageIO.read(ImageIO.java:1400)
        at javax.imageio.ImageIO.read(ImageIO.java:1286)

I searched online and saw this in the Java Forums:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5098176

They have an issue with PNGs created with palettes of less than 32 coors.

They fixed it in Java 1.6. For now you can create your transparent PNGs with a bigger color palette and they should work. You can see we have another one attached to this task that worked for me.

Thanks
Maria

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Maria Bouza - September 17, 2007 11:15 AM

It will be fixed once dotCMS is upgraded to use Java 1.6.
See comments above.