Re: [office] Test document for OFFICE-3821: draw:luminance: The value description is contrary to the data type.

[Regina Henschel <regina.henschel@libreoffice.org>]

Hi Andreas,

Andreas Guelzow schrieb:
> Where do I find a description of the meaning of these luminance values?

That was my other comment 
https://lists.oasis-open.org/archives/office-comment/201303/msg00001.html

I think, it has not got an issue yet.

 How are they intended to change the colour values of the image?

In Apache OpenOffice it is the method  Bitmap::Adjust in 
http://opengrok.adfinis-sygroup.org/source/xref/aoo-trunk/main/vcl/source/gdi/bitmap3.cxx
It is mixed with the other filters. I have not extracted the part which 
belongs to luminance.

The header file 
http://opengrok.adfinis-sygroup.org/source/xref/aoo-trunk/main/vcl/inc/vcl/bitmapex.hxx
or the API at 
http://www.openoffice.org/api/docs/common/ref/com/sun/star/drawing/GraphicObjectShape.html
have not more informations.

I've got a hint to "CIColorControls" in 
https://developer.apple.com/library/mac/#documentation/graphicsimaging/reference/CoreImageFilterReference/Reference/reference.html
But I had not time enough to look, whether this matches the way AOO 
calculates.

Kind regards
Regina

> Andreas
>
> Regina Henschel <regina.henschel@libreoffice.org> wrote:
>
>
> Hi all,
>
> attached is a test document for issue OFFICE-3821 "ODF1.2 draw:luminance
> (part 1, 20.135): The value description is contrary to the data type."
>
> The file has been written by Apache OpenOffice. It contains an embedded
> .png picture with +15%, -15%, +30%, and -30% luminance filter applied.
>
> Kind regards
> Regina