WPG.svobject

  © 1994 by Andreas R. Kleinert.

  FREEWARE. All rights reserved.

  Version      : 2.4
  Release Date : 22.05.1994


  Requirements
  ~~~~~~~~~~~~
  - OS V2.04+ (V37)+ and its libraries
  - superviewsupport.library V1+


  Description
  ~~~~~~~~~~~
  WPG.svobject is an external Library-Module for the superview.library V2+.

  It contains SVDriver-Support for the superview.library V3+, and
  needs any SVDriver with Bitplane-Support.

  It supports reading of WPG (WordPerfect) BitMap Files.
  In detail these are :

  Reading :

   - WPG BitMap (GreyScaled) with 1, 2, 4 or 8 Bits ColorDepth
   - WPG BitMap (ColorMap)   with 1, 2, 4 or 8 Bits ColorDepth


  Writing :

   (not supported yet)


  Remarks
  ~~~~~~~
  WordPerfect WPG Files do not necessarily have to contain BitMap-Graphics,
  they also may contain various other data, e.g. Vector-Graphics.
  If a WPG File contains a BitMap-Graphic in any of its Chunks, this will
  be displayed, otherwise the file will be rejected.

  If a file does not contain any color information, WPG.svobject will
  generate GreyScales by default.
  This will be mentioned in the FileInfoRequester.

  This version actually has been tested with graphics with 1, 4 and 8 Bit
  ColorDepth (2, 16 and 256 Colors).
  Due to the fact, that the 2 Bit-Routine is identically to the 1 Bit-
  Routine should not get any problems with those pictures.


  Author
  ~~~~~~
  Andreas R. Kleinert
  Grube Hohe Grethe 23
  D-57074 Siegen
  Germany


  History
  ~~~~~~~

  V2.4 (22.05.1994) :

   - fixed bug, which caused the last 4 Bytes of the ColorMap not to be read
     (last two Colors have been wrong, then).
     This did not concern grey-scaled Files without own ColorMaps ;-)
   - fixed the same bug for BitMap data : the last 10 Bytes might not
     have been read.
   - modified Doc-File slightly to reflect, that 8 Bit-Files are read
     correctly (not just since V2.4 ...)


  V2.3 (15.05.1994) :

   - fixed subtype strings (one blank too much)
     (better than nothing, eh ?)


  V2.2 (07.05.1994) :

   - use of SAS/C V6.51
   - use of new "superviewsupport.library" V1
     This saves some space again (here : ca. 1100 Bytes).
   - version accidentally reflected 2.5 instead 2.1. Now we're at 2.2 :-)
   - removed some dead code


  V2.1 (17.04.1994) :

   - first version


  Literature
  ~~~~~~~~~~
  [1] "Supercharged Bitmapped Graphics", Steve Rimmer, Windcrest/McGraw-Hill,
       © 1992 by Windcrest Books (registered Trademark of TAB Books).
       ISBN 0-8306-3788-5


  Copyrights
  ~~~~~~~~~~
  Some of the mentioned names or products above may be copyrighted by
  companies or trademarks of companies.