PS interpreter, vector devices and pdfwrite - remove setdash limit of 11

Bug #693916 "setdash does not accept more than 11 elements in the array argument"

The PostScript interpreter was already capable of this, it simply required
the limit check to be removed. The vector device needed to allocate and
free an array of floats, rather than maintain a fixed size array.

pdfwrite was teh most complex as it maintains a stack of gstates, and these
also needed to be modified to allocate and free the dash array. However the
gstate stack wasn't already a garbage collecting structure. Rather than going
to the effort of turning it into one I've opted to allocate the dash pattern
from non-gc memory.

A few PCL files show differences with pdfwrite, because previously pdfwrite
would throw an error (more than 11 elements in the dash array) and the stroked
lines would degenerate into filled rectangles, whereas now they are drawn as
stroked lines with a correct dash pattern. This is much more efficient.

The clist remains unmodified, Ray assures me that it will be handled there
without problems.

0 files changed, 0 insertions, 0 deletions