review requested: [Bug 123515] Import the sample PPTX(with one slide) to AOO, the shape in slide is applied a default color incorrectly ( should be transparent) : [Attachment 81815] fix patch

[bu...@apache.org]

Clarence GUO <cl...@gmail.com> has asked  for review:
Bug 123515: Import the sample PPTX(with one slide) to AOO, the shape in slide
is applied a default color incorrectly ( should be transparent)
https://issues.apache.org/ooo/show_bug.cgi?id=123515

Attachment 81815: fix patch
https://issues.apache.org/ooo/attachment.cgi?id=81815&action=edit


------- Additional Comments from Clarence GUO <cl...@gmail.com>
The root cause is the shape was applied "useBgFill" attribute which means use
slide background color as fill pattern, and it is a attribute in skema p:sp
rather than a separated sub skema of p:sp like other fill patterns such as
a:solidFill, a:gradFill, a:blipFill, a:pattFill.
AOO doesn't handle this attribute.
Currently there's no choice in AOO UI for "use slide background fill". I won't
add this choice in UI but just support it as "no fill". I cannot think if
there's difference between "no fill" and "use slide background fill".