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: 1.18 date: 2006-08-07 13:26:59

user: fm

file: HPLjetIIPrinterStream.st directory: libbasic2

module: stx stc-classLibrary: libbasic2

Author:

Claus Gittinger

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.)

    This class is not officially supported - take it or leave it.

Class protocol:

 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

 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