CUPS PostScript file specification for the Common UNIX Printing System (CUPS).
+ Copyright 2007-2008 by Apple Inc.
Copyright 2006 by Easy Software Products.
These coded instructions, statements, and computer programs are the
- property of Easy Software Products and are protected by Federal
- copyright law. Distribution and use rights are outlined in the file
- "LICENSE.txt" which should have been included with this file. If this
- file is missing or damaged please contact Easy Software Products
- at:
-
- Attn: CUPS Licensing Information
- Easy Software Products
- 44141 Airport View Drive, Suite 204
- Hollywood, Maryland 20636 USA
-
- Voice: (301) 373-9600
- EMail: cups-info@cups.org
- WWW: http://www.cups.org
+ property of Apple Inc. and are protected by Federal copyright
+ law. Distribution and use rights are outlined in the file "LICENSE.txt"
+ which should have been included with this file. If this file is
+ file is missing or damaged, see the license at "http://www.cups.org/".
-->
<h2 class='title'><a name='INTRODUCTION'>Introduction</a></h2>
defacto-standard print job file format/language for UNIX-based
applications, it is slowly being phased out in favor of Adobe's
Portable Document Format ("PDF") which offers many advantages
-over PostScript. MacOS X uses PDF as the primary print job file
-format, and we expect Linux to soon follow. Both PostScript and
+over PostScript. Mac OS X uses PDF as the primary print job file
+format and Linux is making the transition. Both PostScript and
PDF are complex formats, and we highly recommend using high-level
-toolkits whenever possible.</blockquote>
+toolkits whenever possible to create your print jobs.</blockquote>
<h3>Anatomy of a PostScript File</h3>
<p>PostScript files are ASCII text files starting with a header
line (<tt>%!PS-Adobe-3.0</tt>) followed by a combination of
-comment lines starting with two percent signs (<tt>%%</tt>) and
+comment lines starting with the percent sign (<tt>%</tt>) and
PostScript code lines. The lines themselves should not exceed 255
characters to conform to the DSC. The following short PostScript
file produces a box with a smiley face in it:</p>
%%Pages: 1
%%LanguageLevel: 2
%%EndComments
+%%BeginSetup
+% this is where fonts would be embedded
+%%EndSetup
%%Page: (1) 1
+%%BeginPageSetup
+% this is where page-specific features would be specified
+%%EndPageSetup
% Draw a black box around the page
0 setgray
1 setlinewidth
</table></div>
-<h2>Embedding Printer Options</h2>
+<h2><a name='OPTIONS'>Embedding Printer Options</a></h2>
+<p>There are two main strategies for embedding printer options in PostScript
+files. The first is to list CUPS options using the <code>%cupsJobTicket</code>
+comment:</p>
-<h2>Embedding Fonts and Text</h2>
+<pre>
+%!PS-Adobe-3.0
+%cupsJobTicket: media=A4 sides=two-sided-long-edge
+%cupsJobTicket: PrinterOption=foo PrinterOption2=bar
+...
+%%EndComments
+</pre>
+
+<p>CUPS options apply to the entire job. To apply options to individual pages,
+use the <code>%%IncludeFeature</code> comment instead:</p>
+
+<pre>
+%%Page: label 123
+%%BeginPageSetup
+%%IncludeFeature: *PageSize A4
+%%IncludeFeature: *PrinterOption Foo
+%%IncludeFeature: *PrinterOption2 Bar
+%%EndPageSetup
+...
+</pre>
-<h2>Embedding Images</h2>
+<h2><a name='FONTS'>Embedding Fonts and Text</a></h2>
+<p>Always embed the fonts used by your print job, and for best performance
+embed the fonts and character encodings in the setup section of the PostScript
+file. Type 1 and Type 3 fonts are supported by all PostScript printers, while
+Type 42 (TrueType) and CID fonts are supported by most level 2 and all level 3
+PostScript printers. Binary font files should always be converted to the
+corresponding ASCII (hex) encoding to avoid problems when printing over
+interfaces that do not support binary PostScript.</p>
-<blockquote><b>Note:</b> While some printers support arbitrary
-binary data in PostScript files, we do not recommend this
-practice because it does not work with all printers or
-interfaces. In most cases, the Base-85 encoding and compression
-filters can be used to embed images with very little, if any,
-increase in data size.</blockquote>
+<h2><a name='IMAGES'>Embedding Images</a></h2>
+<p>The <code>image</code> operator should be used to embed images in PostScript
+files. Always use ASCII hex or Base-85 encoding for the image data to avoid
+problems when printing over interfaces that do not support binary PostScript.
+In most cases, the Base-85 encoding and compression filters can be used to
+embed images with very little, if any, increase in data size.</p>
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projects / thirdparty / cups.git / blobdiff