UPD Mail Archive: UPD> further input to font handling

UPD> further input to font handling

From: Norbert Schade (nschade@xionics.com)
Date: Mon Feb 14 2000 - 16:03:57 EST

  • Next message: Norbert Schade: "UPD> Unicode support"

    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
    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.


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