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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" PostScript::File::Functions \- Collection of useful PostScript functions .SH "VERSION" .IX Header "VERSION" This document describes version 2.20 of PostScript::File::Functions, released February 11, 2012 as part of PostScript-File version 2.20. .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& use PostScript::File; \& \& my $ps = PostScript::File\->new; \& $ps\->use_functions(qw( setColor showCenter )); \& $ps\->add_to_page("1 setColor\en" . \& "400 400 (Hello, World!) showCenter\en"); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" PostScript::File::Functions provides a library of handy PostScript functions that can be used in documents created with PostScript::File. You don't normally use this module directly; PostScript::File's \&\f(CW\*(C`use_functions\*(C'\fR method loads it automatically. .SH "POSTSCRIPT FUNCTIONS" .IX Header "POSTSCRIPT FUNCTIONS" .SS "boxPath" .IX Subsection "boxPath" .Vb 1 \& LEFT TOP RIGHT BOTTOM boxPath .Ve .PP Given the coordinates of the sides of a box, this creates a new, closed path starting at the bottom right corner, across to the bottom left, up to the top left, over to the top right, and then back to the bottom right. .SS "clipBox" .IX Subsection "clipBox" .Vb 1 \& LEFT TOP RIGHT BOTTOM clipBox .Ve .PP This clips to the box defined by the coordinates. .SS "drawBox" .IX Subsection "drawBox" .Vb 1 \& LEFT TOP RIGHT BOTTOM drawBox .Ve .PP This calls boxPath to and then strokes the path using the current pen. .SS "fillBox" .IX Subsection "fillBox" .Vb 1 \& LEFT TOP RIGHT BOTTOM COLOR fillBox .Ve .PP This fills the path created by boxPath with \f(CW\*(C`COLOR\*(C'\fR, which can be anything accepted by setColor. .SS "hLine" .IX Subsection "hLine" .Vb 1 \& WIDTH X Y hline .Ve .PP Stroke a horizontal line with the current pen with the left endpoint at position \f(CW\*(C`X, Y\*(C'\fR, extending \f(CW\*(C`WIDTH\*(C'\fR points rightwards. .SS "setColor" .IX Subsection "setColor" .Vb 1 \& RGB\-ARRAY|BW\-NUMBER setColor .Ve .PP This combines \f(CW\*(C`setgray\*(C'\fR and \f(CW\*(C`setrgbcolor\*(C'\fR into a single function. You can provide either an array of 3 numbers for \f(CW\*(C`setrgbcolor\*(C'\fR, or a single number for \f(CW\*(C`setgray\*(C'\fR. The \*(L"str\*(R" in PostScript::File function was designed to format the parameter to this function. .SS "showCenter" .IX Subsection "showCenter" .Vb 1 \& X Y STRING showCenter .Ve .PP This prints \f(CW\*(C`STRING\*(C'\fR centered horizontally at position X using baseline Y and the current font. .SS "showLeft" .IX Subsection "showLeft" .Vb 1 \& X Y STRING showLeft .Ve .PP This prints \f(CW\*(C`STRING\*(C'\fR left justified at position X using baseline Y and the current font. .SS "showLines" .IX Subsection "showLines" .Vb 1 \& X Y LINES SPACING FUNC showLines .Ve .PP This calls \f(CW\*(C`FUNC\*(C'\fR for each element of \f(CW\*(C`LINES\*(C'\fR, which should be an array of strings. \f(CW\*(C`FUNC\*(C'\fR is called with \f(CW\*(C`X Y STRING\*(C'\fR on the stack, and it must pop those off. \f(CW\*(C`SPACING\*(C'\fR is subtracted from \&\f(CW\*(C`Y\*(C'\fR after every line. \f(CW\*(C`FUNC\*(C'\fR will normally be \f(CW\*(C`showCenter\*(C'\fR, \&\f(CW\*(C`showLeft\*(C'\fR, or \f(CW\*(C`showRight\*(C'\fR. .SS "showRight" .IX Subsection "showRight" .Vb 1 \& X Y STRING showRight .Ve .PP This prints \f(CW\*(C`STRING\*(C'\fR right justified at position X using baseline Y and the current font. .SS "vLine" .IX Subsection "vLine" .Vb 1 \& HEIGHT X Y vline .Ve .PP Stroke a vertical line with the current pen with the bottom endpoint at position \f(CW\*(C`X, Y\*(C'\fR, extending \f(CW\*(C`HEIGHT\*(C'\fR points upwards. .SH "METHODS" .IX Header "METHODS" While you don't normally deal with PostScript::File::Functions objects directly, it is possible. The following methods are available: .SS "new" .IX Subsection "new" .Vb 1 \& $funcs = PostScript::File::Functions\->new; .Ve .PP The constructor takes no parameters. .SS "add" .IX Subsection "add" .Vb 1 \& $funcs\->add(\*(AqfunctionRequested\*(Aq, ...); .Ve .PP Add one or more functions to the procset to be generated. All dependencies of the requsted functions are added automatically. See \&\*(L"\s-1POSTSCRIPT\s0 \s-1FUNCTIONS\s0\*(R" for the list of available functions. .SS "add_to_file" .IX Subsection "add_to_file" .Vb 1 \& $funcs\->add_to_file($ps, $basename); .Ve .PP This is short for .PP .Vb 1 \& $ps\->add_procset( $funcs\->generate_procset($basename) ); .Ve .PP \&\f(CW$ps\fR should normally be a PostScript::File object. See \*(L"add_procset\*(R" in PostScript::File. .SS "generate_procset" .IX Subsection "generate_procset" .Vb 1 \& ($name, $code, $version) = $funcs\->generate_procset($basename); .Ve .PP This collects the requsted functions into a block of PostScript code. .PP \&\f(CW$name\fR is a suitable name for the procset, created by appending the ids of the requsted functions to \f(CW$basename\fR. If \f(CW$basename\fR is omitted, it defaults to the class name with \f(CW\*(C`::\*(C'\fR replaced by \f(CW\*(C`_\*(C'\fR. .PP \&\f(CW$code\fR is a block of PostScript code that defines the functions. It contains no comments or excess whitespace. .PP \&\f(CW$version\fR is the version number of the procset. .PP In scalar context, returns \f(CW$code\fR. .SH "DIAGNOSTICS" .IX Header "DIAGNOSTICS" .ie n .IP """%s is not an available function""" 4 .el .IP "\f(CW%s is not an available function\fR" 4 .IX Item "%s is not an available function" You requsted a function that this version of PostScript::File::Functions doesn't provide. .SH "CONFIGURATION AND ENVIRONMENT" .IX Header "CONFIGURATION AND ENVIRONMENT" PostScript::File::Functions requires no configuration files or environment variables. .SH "INCOMPATIBILITIES" .IX Header "INCOMPATIBILITIES" None reported. .SH "BUGS AND LIMITATIONS" .IX Header "BUGS AND LIMITATIONS" No bugs have been reported. .SH "AUTHOR" .IX Header "AUTHOR" Christopher J. Madsen \f(CW\*(C`\*(C'\fR .PP Please report any bugs or feature requests to \f(CW\*(C`\*(C'\fR or through the web interface at http://rt.cpan.org/Public/Bug/Report.html?Queue=PostScript\-File . .PP You can follow or contribute to PostScript-File's development at http://github.com/madsen/postscript\-file . .SH "COPYRIGHT AND LICENSE" .IX Header "COPYRIGHT AND LICENSE" This software is copyright (c) 2012 by Christopher J. Madsen. .PP This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. .SH "DISCLAIMER OF WARRANTY" .IX Header "DISCLAIMER OF WARRANTY" \&\s-1BECAUSE\s0 \s-1THIS\s0 \s-1SOFTWARE\s0 \s-1IS\s0 \s-1LICENSED\s0 \s-1FREE\s0 \s-1OF\s0 \s-1CHARGE\s0, \s-1THERE\s0 \s-1IS\s0 \s-1NO\s0 \s-1WARRANTY\s0 \&\s-1FOR\s0 \s-1THE\s0 \s-1SOFTWARE\s0, \s-1TO\s0 \s-1THE\s0 \s-1EXTENT\s0 \s-1PERMITTED\s0 \s-1BY\s0 \s-1APPLICABLE\s0 \s-1LAW\s0. \s-1EXCEPT\s0 \s-1WHEN\s0 \&\s-1OTHERWISE\s0 \s-1STATED\s0 \s-1IN\s0 \s-1WRITING\s0 \s-1THE\s0 \s-1COPYRIGHT\s0 \s-1HOLDERS\s0 \s-1AND/OR\s0 \s-1OTHER\s0 \s-1PARTIES\s0 \&\s-1PROVIDE\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \*(L"\s-1AS\s0 \s-1IS\s0\*(R" \s-1WITHOUT\s0 \s-1WARRANTY\s0 \s-1OF\s0 \s-1ANY\s0 \s-1KIND\s0, \s-1EITHER\s0 \&\s-1EXPRESSED\s0 \s-1OR\s0 \s-1IMPLIED\s0, \s-1INCLUDING\s0, \s-1BUT\s0 \s-1NOT\s0 \s-1LIMITED\s0 \s-1TO\s0, \s-1THE\s0 \s-1IMPLIED\s0 \&\s-1WARRANTIES\s0 \s-1OF\s0 \s-1MERCHANTABILITY\s0 \s-1AND\s0 \s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0. \s-1THE\s0 \&\s-1ENTIRE\s0 \s-1RISK\s0 \s-1AS\s0 \s-1TO\s0 \s-1THE\s0 \s-1QUALITY\s0 \s-1AND\s0 \s-1PERFORMANCE\s0 \s-1OF\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1IS\s0 \s-1WITH\s0 \&\s-1YOU\s0. \s-1SHOULD\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1PROVE\s0 \s-1DEFECTIVE\s0, \s-1YOU\s0 \s-1ASSUME\s0 \s-1THE\s0 \s-1COST\s0 \s-1OF\s0 \s-1ALL\s0 \&\s-1NECESSARY\s0 \s-1SERVICING\s0, \s-1REPAIR\s0, \s-1OR\s0 \s-1CORRECTION\s0. .PP \&\s-1IN\s0 \s-1NO\s0 \s-1EVENT\s0 \s-1UNLESS\s0 \s-1REQUIRED\s0 \s-1BY\s0 \s-1APPLICABLE\s0 \s-1LAW\s0 \s-1OR\s0 \s-1AGREED\s0 \s-1TO\s0 \s-1IN\s0 \s-1WRITING\s0 \&\s-1WILL\s0 \s-1ANY\s0 \s-1COPYRIGHT\s0 \s-1HOLDER\s0, \s-1OR\s0 \s-1ANY\s0 \s-1OTHER\s0 \s-1PARTY\s0 \s-1WHO\s0 \s-1MAY\s0 \s-1MODIFY\s0 \s-1AND/OR\s0 \&\s-1REDISTRIBUTE\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1AS\s0 \s-1PERMITTED\s0 \s-1BY\s0 \s-1THE\s0 \s-1ABOVE\s0 \s-1LICENSE\s0, \s-1BE\s0 \&\s-1LIABLE\s0 \s-1TO\s0 \s-1YOU\s0 \s-1FOR\s0 \s-1DAMAGES\s0, \s-1INCLUDING\s0 \s-1ANY\s0 \s-1GENERAL\s0, \s-1SPECIAL\s0, \s-1INCIDENTAL\s0, \&\s-1OR\s0 \s-1CONSEQUENTIAL\s0 \s-1DAMAGES\s0 \s-1ARISING\s0 \s-1OUT\s0 \s-1OF\s0 \s-1THE\s0 \s-1USE\s0 \s-1OR\s0 \s-1INABILITY\s0 \s-1TO\s0 \s-1USE\s0 \&\s-1THE\s0 \s-1SOFTWARE\s0 (\s-1INCLUDING\s0 \s-1BUT\s0 \s-1NOT\s0 \s-1LIMITED\s0 \s-1TO\s0 \s-1LOSS\s0 \s-1OF\s0 \s-1DATA\s0 \s-1OR\s0 \s-1DATA\s0 \s-1BEING\s0 \&\s-1RENDERED\s0 \s-1INACCURATE\s0 \s-1OR\s0 \s-1LOSSES\s0 \s-1SUSTAINED\s0 \s-1BY\s0 \s-1YOU\s0 \s-1OR\s0 \s-1THIRD\s0 \s-1PARTIES\s0 \s-1OR\s0 A \&\s-1FAILURE\s0 \s-1OF\s0 \s-1THE\s0 \s-1SOFTWARE\s0 \s-1TO\s0 \s-1OPERATE\s0 \s-1WITH\s0 \s-1ANY\s0 \s-1OTHER\s0 \s-1SOFTWARE\s0), \s-1EVEN\s0 \s-1IF\s0 \&\s-1SUCH\s0 \s-1HOLDER\s0 \s-1OR\s0 \s-1OTHER\s0 \s-1PARTY\s0 \s-1HAS\s0 \s-1BEEN\s0 \s-1ADVISED\s0 \s-1OF\s0 \s-1THE\s0 \s-1POSSIBILITY\s0 \s-1OF\s0 \&\s-1SUCH\s0 \s-1DAMAGES\s0.