UPD Mail Archive: FW: UPD> further input to font handling

FW: UPD> further input to font handling

From: MATTS,SANDRA (HP-Boise,ex1) (sandra_matts@hp.com)
Date: Thu Feb 17 2000 - 15:33:06 EST

  • Next message: Norbert Schade: "UPD> command sequences"

    > -----Original Message-----
    > From: Sandra Matts [mailto:sandram@boi.hp.com]
    > Sent: Thursday, February 17, 2000 1:19 PM
    > To: sandra_matts@am.exch.hp.com
    > Subject: FW: UPD> further input to font handling
    > -----Original Message-----
    > From: Sandra Matts [mailto:sandram@boi.hp.com]
    > Sent: Wednesday, February 16, 2000 2:02 PM
    > To: UPD group
    > Subject: RE: UPD> further input to font handling
    > user defined character sets are limited to 256 characters. It can
    > be typical for Asian docs to contain 1000-2000 unique
    > characters. Therefore the driver has to maintain a list of font
    > descriptor numbers and when it downloads a character, it has
    > to search for it in the list of font descriptors. It is not a major
    > problem. There are drivers today that manage this. I just
    > want to make sure that people realize there some work
    > involved in the driver to make it work.
    > Sandra Matts
    > Sandra Matts
    > Engineer Scientist
    > Hewlett-Packard
    > sandram@boi.hp.com
    > 208-396-4755 phone
    > Boise, ID 83714
    > -----Original Message-----
    > From: owner-upd@pwg.org [mailto:owner-upd@pwg.org]On Behalf Of Norbert
    > Schade
    > Sent: Monday, February 14, 2000 2:04 PM
    > To: UPD group
    > Subject: UPD> further input to font handling
    > Having checked user defined character sets in PCL over the week-end I
    > think
    > this is a good direction to go.
    > I explained why a UPD has to have the ability to define and download user
    > defined character sets in PostScript (only one character set per font,
    > only
    > few predefined char sets). So we would add few sections to the driver
    > development to extend this functionality to PCL. We can use Unicode in PCL
    > character set definitions.
    > This would make UPDF practically independent from character sets for
    > device
    > fonts. It saves time when creating the UPDF font section. It makes the
    > font
    > description significantly shorter. It may even be more efficient in
    > performance.
    > I realize that it can happen that we redefine a character set, which was
    > already a perfect match as a predefined, in certain cases.
    > The only challenge would be to add the necessary functionality for PCL.
    > A future switch to direct Unicode support in the PDL would then be little
    > more than a finger snip.
    > I still believe that we need the character set functionality described
    > last
    > Friday for dynamic character selection additionally, as some fonts may
    > come
    > with only "almost" perfect match from the font vendor, as some PDL may not
    > offer a dynamic user defined character set.
    > But for PCL 5, PCL 6 and PostScript this will make our life easier - and
    > of
    > those, who will write the UPDF.
    > Norbert

    This archive was generated by hypermail 2b29 : Thu Feb 17 2000 - 15:38:09 EST