kicad-developers team mailing list archive

[Maciej Sumiński <maciej.suminski@xxxxxxx>]

Hi Jean-Pierre,

On 10/8/18 3:08 PM, jp charras wrote:
[snip]
> Hi Orson,
> Very good job.
> 
> I tested the Cairo printing both on Windows and Linux.
> 
> No problem on Linux.
> On Windows, I have strange artifacts (see attached picture) in print
> preview.
> (more strange, if a zone outline includes the full board items, there
> are no, or very few, artifacts)

I will check it, but I am afraid it might be beyond my control. Do you
see it in actual printouts/PDFs as well?

> It happens only when the opacity of any printed item is not set to 1.0
> 
> Moreover, when the opacity of any printed item is not set to 1.0, the
> resulting printed picture is a bitmap (tested both using Cutepdf and a
> printer using a postscript driver), not really usable.
> (When all objects use a 1.0 opacity, the drawings are vectored, as expected)
> 
> Due to the fact transparency is not working very well on Cairo, and
> useless when printing a board with one sheet by layer, I suggest to
> force the opacity to 1.0 in any case.

That is surprising, I will need a closer look then. I would like to
preserve transparency, but I agree that getting bitmaps instead of
vector graphics is not acceptable.

Regards,
Orson

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