https://bugs.documentfoundation.org/show_bug.cgi?id=148655
Bug ID: 148655
Summary: Replace "Octagon Bevel" and "Diamond Bevel" with
similar shapes suitable for export to OOXML
Product: LibreOffice
Version: Inherited From OOo
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: enhancement
Priority: low
Component: LibreOffice
Assignee: libreoffice-bugs@lists.freedesktop.org
Reporter: rb.hensc...@t-online.de
Created attachment 179649
--> https://bugs.documentfoundation.org/attachment.cgi?id=179649&action=edit
Illustration of the problem
This is a follow up to bug 148501.
The shapes "Octagon Bevel" and "Diamond Bevel" use shadings which cannot be
expressed in OOXML and which are darker than those originally introduced in
OOo2.1. The attachment here has a copy of the screenshots of attachment 179647.
My request is to use similar shapes, which are nearer to the original intended
shading and are better suitable for export to OOXML.
The attachment has two proposals:
(My favorite) Use the darken/lighten commands of the enhanced-path. They are
available in API. They are not available in ODF 1.3 and need to be written in
drawooo namespace. Their export as static shape (no handles) works already
including shading. Problem is that the shading does not work together with
bitmap-filling. That is a problem in LO, PowerPoint shows the shading in those
cases.
The other way would be to use a color shade encoding, which gives the desired
shading but is restricted to values available in OOXML. That renders the
shading for bitmap filling in LO. This color shade encoding does not belong to
ODF, but is specific to LO and AOO, MS Office does not know it. The export to
OOXML would need to convert it to the darken/lighten attribute of OOXML. But
that does not exists yet.
Because the color encoding of OOo2.1 allows up to 14 values for shading, but
OOXML has only 4 values, we would need to restrict the shades. Therefore there
are two suggestions for the "Octagon Bevel", which has original 5 shades in the
outer segments.
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