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http://www.openoffice.org/issues/show_bug.cgi?id=20209





------- Additional comments from [EMAIL PROTECTED] Thu May 12 06:28:58 -0700 
2005 -------
I assume the "transparency feature" you talk about is "PDF transparency"? but
"100% transparency" is very different from any other kind of transparency
(except "0% transparency").

Keep in mind that the bug only concerns the background of frames, etc.

With the current behaviour, when you specify transparency to be "no fill", OOo
paints a white rectangle, then draws the contents of the frame. Why should OOo
paint a white rectangle first? This is the part that's unintuitive; it's wrong
and unnecessary. It's wrong because "no fill" means "no fill", not "white fill";
it's unnecessary because of the next point.

With "100% transparent", OOo just draws the contents of the frame. This already
works perfectly; it is 100% Postscript compatible and should not cause any
problems in any kind of output device. This is the intuitive (truthful)
behaviour and OOo currently handles it 100% correctly.

With any other kind of transparency (1% to 99%), OOo produces PDF files with PDF
transparency (which is not supported by all PDF readers, in particular it's not
supported by Ghostscript), but produces bitmaps when printing to Postscript
(i.e., computes the whole page as a bitmap, then sends the whole bitmap to the
Postscript device), making the output very unsuitable for almost any purpose.
(This is unsuitable even for printing because the output will tend to be of
lower quality than usual.) It's the 1% to 99% transparent frames that cause
problems, and this bug is not concerned with such kinds of transparencies at 
all.

In summary, this bug says

1. "no fill means no fill, not white fill" and

2. "OOo already handles 100% transparent correctly, and the expected behaviour
of no fill is the existing behaviour of 100% transparent";

3. therefore, OOo should treat "no fill" as "100% transparent".

As far as I can tell, OOo is the only program I have ever seen that has this
strange behaviour of "none" not equaling to "100 transparent". (Note: Most
programs can only handle either 0% transparent and 100% transparent. Both as
easy to handle, as explained above.)

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