tdf#161327 Interpret angle units in dr3d:end-angle .. HEADmaster

.. and draw:rotation in <draw:hatch> element.

ODF 1.1 has not specified the syntax of datatype 'angle'. Since ODF 1.2
it is specified as double with unit "deg", "grad" or "rad", or without
unit. The unit-less value is specified to be in degrees. But OOo, AOO
and all LO versions had written the value unit-less in 1/10th of a
degree in some cases.

To fix it, LibreOffic will be enabled to read units. When then the
active versions are able to read units, starting with the then actual
version, LibreOffice will write angles with unit 'deg'.

This has already be done for gradients, see tdf#89475. This patch
starts the first step to make LibreOffice able to read units for
dr3d:end-angle (UNO D3DEndAngle) and for draw:rotation (UNO
FillHatch.Angle). I have not found further cases of writing 1/10deg.

The patch still writes unit-less 1/10th of a degree for export to
ODF 1.3 and earlier. When it is time to write unit degree or when
LibreOffice supports the next ODF versions, some places need to be
adapted. They are marked.

The converter convertAngle is renamed to convert10thDegAngle() to
indicate, that it is special. The parts, which were specific to
gradients are moved to the gradients, so that it is now usable for
dr3d:angle and draw:rotation too.

I intend to write next a patch that enables LibreOffice to read angle
units for cases where LibreOffice already writes unit-less values in
degree. That is not so urgent, but to bring LibreOffice nearer to ODF,
reading angle units should be implemented nevertheless.

The file xmlbahdl.hxx is moved from xmloff/source/style to xmloff/inc
to have access to it from xmloff/source/draw.

Change-Id: I8ffc2735f8bcfefb86efa80eb05f900c32403f31
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/168336
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
Reviewed-by: Regina Henschel <rb.henschel@t-online.de>

0 files changed, 0 insertions, 0 deletions