formats.txt

qt-x11-opensource-src-4.1.4.tar.gz源码

This file contains a list of various font formats.  It gives the
reference document and whether it is supported in FreeType 2.


  file type:
    The only special case is `MAC'; on older Mac OS versions, a `file'
    is stored as a data and a resource fork, this is, within two
    separate data chunks.  In all other cases, the font data is stored
    in a single file.

  wrapper format:
    The format used to represent the font data.  In the table below it
    is used only if the font format differs.  Possible values are
    `SFNT' (binary), `PS' (a text header, followed by binary or text
    data), and `LZW' (compressed with either `gzip' or `compress').

  font format:
    How the font is to be accessed, possibly after converting the file
    type and wrapper format into a generic form.  Bitmap formats are
    `BDF', `PCF', and one form of `WINFNT'; all others are vector
    formats.

  font type:
    Sub-formats of the font format.  `SBIT' and `MACSBIT' are bitmap
    formats, `MM' and `VAR' support optical axes.

  glyph access:
    If not specified, the glyph access is `standard' to the font
    format.  Values are `CID' for CID-keyed fonts, `SYNTHETIC' for
    fonts which are modified versions of other fonts by means of a
    transformation matrix, `COLLECTION' for collecting multiple fonts
    (sharing most of the data) into a single file, and `TYPE_0' for PS
    fonts which are to be accessed in a tree-like structure.

  FreeType driver:
    The module in the FreeType library which handles the specific font
    format.  A missing entry means that FreeType doesn't support the
    font format (yet).


Please send additions and/or corrections to [e-mail] or to the
FreeType developer's list at [e-mail] (for subscribers
only).  If you can provide a font example for a format which isn't
supported yet please send a mail too.


file wrapper font   font    glyph      FreeType reference
type format  format type    access     driver   documents
----------------------------------------------------------------------------

---  ---     BDF    ---     ---        bdf      5005.BDF_Spec.pdf, X11


---  SFNT    PS     TYPE_1  ---        ---      Type 1 GX Font Format
                                                (for the Mac)
MAC  SFNT    PS     TYPE_1  ---        ---      Type 1 GX Font Format
                                                (for the Mac)
---  SFNT    PS     TYPE_1  CID        ---      5180.sfnt.pdf (for the Mac)
MAC  SFNT    PS     TYPE_1  CID        ---      5180.sfnt.pdf (for the Mac)
---  SFNT    PS     CFF     ---        cff      OT spec, 5176.CFF.pdf
                                                (`OTTO' format)
MAC  SFNT    PS     CFF     ---        cff      OT spec, 5176.CFF.pdf
                                                (`OTTO' format)
---  SFNT    PS     CFF     CID        cff      OT spec, 5176.CFF.pdf
MAC  SFNT    PS     CFF     CID        cff      OT spec, 5176.CFF.pdf
---  SFNT    PS     CFF     SYNTHETIC  ---      OT spec, 5176.CFF.pdf
MAC  SFNT    PS     CFF     SYNTHETIC  ---      OT spec, 5176.CFF.pdf
---  SFNT    TT     SBIT    ---        sfnt     XFree86 (bitmaps only;
                                                with `head' table)
---  SFNT    TT     MACSBIT ---        sfnt     OT spec (for the Mac;
                                                bitmaps only; `bhed' table)
MAC  SFNT    TT     MACSBIT ---        sfnt     OT spec (for the Mac;
                                                bitmaps only; `bhed' table)
---  SFNT    TT     ---     ---        truetype OT spec (`normal' TT font)
MAC  SFNT    TT     ---     ---        truetype OT spec (`normal' TT font)
MAC  SFNT    TT     VAR     ---        truetype GX spec (`?var' tables)
---  SFNT    TT     ---     COLLECTION truetype OT spec (this can't be CFF)
MAC  SFNT    TT     ---     COLLECTION truetype OT spec (this can't be CFF)


---  ---     PS     TYPE_1  ---        type1    T1_SPEC.pdf
                                                (`normal' Type 1 font)
MAC  ---     PS     TYPE_1  ---        type1    T1_SPEC.pdf
                                                (`normal' Type 1 font)
---  ---     PS     TYPE_1  CID        cid      PLRM.pdf (CID Font Type 0;
                                                Type 9 font)
---  ---     PS     MM      ---        type1    5015.Type1_Supp.pdf
                                                (Multiple Masters)
---  ---     PS     CFF     ---        cff      5176.CFF.pdf (`pure' CFF)
---  ---     PS     CFF     CID        cff      5176.CFF.pdf (`pure' CFF)
---  ---     PS     CFF     SYNTHETIC  ---      5176.CFF.pdf (`pure' CFF)
---  PS      PS     CFF     ---        ---      PLRM.pdf (Type 2) [1]
---  PS      PS     CFF     CID        ---      PLRM.pdf (Type 2) [1]
---  PS      PS     CFF     SYNTHETIC  ---      PLRM.pdf (Type 2) [1]
---  ---     PS     ---     TYPE_0     ---      PLRM.pdf
---  ---     PS     TYPE_3  ---        ---      PLRM.pdf (never supported)
---  ---     PS     TYPE_3  CID        ---      PLRM.pdf (CID Font Type 1;
                                                Type 10 font; never supported)
---  PS      PS     TYPE_14 ---        ---      PLRM.pdf (Chameleon font;
                                                Type 14 font; never supported?)
---  ---     PS     TYPE_32 CID        ---      PLRM.pdf (CID Font Type 4;
                                                Type 32 font; never supported?)
---  PS      TT     ---     ---        type42   5012.Type42_Spec.pdf
                                                (Type 42 font)
---  PS      TT     ---     CID        ---      PLRM.pdf (CID Font Type 2;
                                                Type 11 font)


---  ?       ?      CEF     ?          cff      ?


---  ---     PCF    ---     ---        pcf      X11
---  LZW     PCF    ---     ---        pcf      X11


---  ---     PFR    PFR0    ---        pfr      [2]
---  ---     PFR    PFR1    ---        ---      (undocumented, proprietary;
                                                probably never supported)


---  ---     WINFNT ---     ---        winfonts MS Windows 3 Developer's Notes
---  ---     WINFNT VECTOR  ---        ---      MS Windows 3 Developer's Notes


[1] Support should be rather simple since this is identical to `CFF'
    but in a PS wrapper.

[2] Official PFR specification:

      http://www.bitstream.com/categories/developer/truedoc/pfrspec.html
      http://www.bitstream.com/categories/developer/truedoc/pfrspec1.2.pdf

    The syntax of the auxiliary data is not defined there, but is partially
    defined in MHP 1.0.3 (also called ETSI TS 101812 V1.3.1) section 7.4.

      http://www.etsi.org/
      http://webapp.etsi.org/workprogram/Report_WorkItem.asp?WKI_ID=18799

    (free registration required).

------------------------------------------------------------------------

Copyright 2004, 2005 by
David Turner, Robert Wilhelm, and Werner Lemberg.

This  file  is  part  of the  FreeType  project, and may  only be  used,
modified,  and  distributed  under  the  terms of  the FreeType  project
license, LICENSE.TXT.   By continuing to use, modify, or distribute this
file you  indicate that  you have  read the  license and understand  and
accept it fully.


--- end of formats.txt ---