Definition of draw:angle in ODF1.2 does not fit to implementation

[Regina Henschel <rb.henschel@t-online.de>]

Hi members,

the definitions of the attributes draw:angle (19.112) and 
draw:rotation(19.209) do not fit to the actual implementations.

The definitions refer to the data type angle in section 18.3.1:
"An angle, as defined in §4.1 of [SVG]. An angle is a double value that 
may be followed immediately by one of the following angle unit 
identifiers: deg (degrees), grad (gradiants) or rad (radians). If no 
unit identifier is specified, the value is assumed to be in degrees."

The actual implementations use the value without unit but they interpret 
it as having unit 0.1 degrees and they use data type integer.

I have tested PowerPoint, LibreOffice, Symphony, and Apache OpenOffice 
so far. I haven't got a Linux system and cannot test Calligra.

The attribute draw:angle is only used with the elements draw:gradient 
and draw:opacity and the attribute draw:rotation is only used with the 
element draw:hatch. So a change for these attributes would not effect 
other places in the spec. For ODF1.3 I suggest to deprecate them in 
favor of a solution nearer to SVG.

To align the spec with the existing implementations I suggest:
(1) Remove the reference to section 18.3.1
(2) Specify that a value n is treated as n*0.1 degrees.
(3) Perhaps constrain the value to integer.

I suggest to do this as errata for ODF1.2.

I'm not a native English speaker and no expert for spec writing, but 
here my wording:
In section "19.112 draw:angle" and same in section "19.209 draw:rotation":
old
"The draw:angle attribute has the data type angle 18.3.1."
new
"The draw:angle attribute has the data type integer. The attribute value 
n is treated as angle value n*0.1degrees."

The problem has been discussed on ooo-dev@incubator.apache.org and 
libreoffice@lists.freedesktop.org, links below. The discussion brought 
up the problem of angle orientation too, but that can only be solved in 
ODF1.3.

The discussion was a little bit scattered, therefor several links:
Initial mail with subject "Definition of draw:angle in ODF1.2 does not 
fit to implementation"
http://thread.gmane.org/gmane.comp.apache.incubator.ooo.devel/23201
http://lists.freedesktop.org/archives/libreoffice/2012-July/035988.html
Answers and threads
http://thread.gmane.org/gmane.comp.apache.incubator.ooo.devel/23207
http://lists.freedesktop.org/archives/libreoffice/2012-July/035994.html
http://lists.freedesktop.org/archives/libreoffice/2012-July/035999.html
http://lists.freedesktop.org/archives/libreoffice/2012-August/036118.html


Kind regards
Regina