Class: HPLjetIIPrinterStream

• Inheritance
• Description
• Class protocol
  • initialization
  • queries
• Instance protocol
  • access-writing
  • emphasis change
  • font change

Inheritance:

   Object
   |
   +--Stream
      |
      +--PrinterStream
         |
         +--HPLjetIIPrinterStream

Package:

stx:libbasic2

Category:

Interface-Printing

Version:

rev: 1.23 date: 2021/01/20 14:31:57

user: cg

file: HPLjetIIPrinterStream.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Description:

This class defines protocol for simple text prinitng on an HP Laserjet 2/3
(and compatible) printer. 
It does not support multiple fonts, but knows how to print bold, italic etc.

Graphics printing is not supported - you need a postscriptprinter for this.

Notice: 
    This class only defines some minimum protocol for printing on
    HP-LJ - you really should use a PostscriptPrinter ...
    ... however, if you own a LJ, here is some class to start with.
    It may need to be enhanced at some places (for example: provide more
    fonts/emphasis's, better international character translation,
    image printing etc.)

[Disclaimer:]    
    This class is not officially supported - take it or leave it.

copyright
COPYRIGHT (c) 1988 by Claus Gittinger
             All Rights Reserved

This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice.   This software may not
be provided or otherwise made available to, or used by, any
other person.  No title to or ownership of the software is
hereby transferred.

Class protocol:

 initialize

self initialize

 printerTypeName

return a descriptive name

Instance protocol:

 cr

send a carriage-return (newLine) to the printer.
We have to output cr-nl here

 nextPut: aCharacter

print aCharacter.
Answer the argument.

 bold

switch to bold emphasis

 italic

switch to italic/oblique emphasis

 normal

switch to normal/roman emphasis

 courier

switch to courier font

 helvetica

switch to helvetica font

 times

switch to times font