Dear FOP devs,
I am working on rounded corner support in fop (see branch
Temp_RoundedCorners for work in progress) and I have hit upon a
problem
whilst trying to print PDF to a printer using a PCL6 driver.
Borders in PDF are created using a graphical streams of primitive
drawing commands and the rounded variant makes use of cubic bezier
curves.
I am inconsistently not able to print rounded borders and I am hoping
a snippet of the graphical stream of two border sections may provide a
fop developer with enough
info to debug the problem.
The first snippet is part of PDF that is successfully transformed to
printable PLC
q
1 0 0 1 -10 0 cm
4.393 4.393 m
7.205 1.581 11.023 0 14.999 0 c
383.720001 0 l
387.696014 0 391.514008 1.581 394.325989 4.393 c
387.255005 11.464 l
386.317993 10.527 385.045013 10 383.720001 10 c
15 10 l
13.674 10 12.401 10.527 11.464 11.464 c
h
W
n
0 G
[] 0 d 15 w
0 7.5 m 398.720001 7.5 l S
Q
The next snippet does not work
q
1 0 0 1 51.022999 785.195007 cm
-0 -1 1 -0 0 0 cm
8.302 8.302 m
13.616 2.988 20.830999 0 28.344999 0 c
700.156982 0 l
707.671021 0 714.885986 2.988 720.200012 8.302 c
716.192017 12.31 l
711.940002 8.059 706.169006 5.668 700.156982 5.669 c
28.346001 5.669 l
22.333 5.669 16.562 8.059 12.31 12.31 c
h
W
n
0.85098 0.14902 0.254902 RG
[] 0 d 28.346001 w
0 14.173 m 728.502991 14.173 l S
Q
I am aware that the problem may be in the print driver (outside the
scope of this list), or due to a wider context in the PDF,
but I am consistently able to print embedded SVGs that FOP maps to
equivalent graphical streams, and this leads me to conclude there may
be a problem with the border generation code.
Whilst debugging this issues I did notice that the coordinates are
formatted to 6 decimal places in the border painting yet to 8 dps in
org.apache.fop.svg.PDFGraphics2D ( the SVG to PDF bridge).
Changing PDFBorderPainter to use 8 dps did not solve my problem,
however I am wondering why the discrepancy exists.
Please prompt me for more details if you are able to offer any help
Thanks in advance,
Pete
