Games::Go::Dg2PDF(3) Perl extension to convert Games::Go::Diagrams to


use Games::Go::Dg2PDF

my $dg2pdf = B<Games::Go::Dg2PDF-E<gt>new> (options);


A Games::Go::Dg2PDF object converts a Games::Go::Diagram object into a PDF file.


my $dg2pdf = Games::Go::Dg2PDF->new (?options?)
A new Games::Go::Dg2PDF takes the following options:

General Dg2 Converter Options:

boardSize => number
Sets the size of the board.

Default: 19

doubleDigits => true | false
Numbers on stones are wrapped back to 1 after they reach 100. Numbers associated with comments and diagram titles are not affected.

Default: false

coords => true | false
Generates a coordinate grid.

Default: false

topLine => number (Default: 1)
bottomLine => number (Default: 19)
leftLine => number (Default: 1)
rightLine => number (Default: 19)
The edges of the board that should be displayed. Any portion of the board that extends beyond these numbers is not included in the output.
diaCoords => sub { # convert $x, $y to Diagram coordinates }
This callback defines a subroutine to convert coordinates from $x, $y to whatever coordinates are used in the Games::Go::Diagram object. The default diaCoords converts 1-based $x, $y to the same coordinates used in SGF format files. You only need to define this if you're using a different coordinate system in the Diagram.

    sub { my ($x, $y) = @_;
          $x = chr($x - 1 + ord('a')); # convert 1 to 'a', etc
          $y = chr($y - 1 + ord('a'));
          return(``$x$y''); },           # concatenate two letters

print => sub { my ($dg2tex, @tex) = @_; ... }
A user defined subroutine to replace the default printing method. This callback is called from the print method (below) with the reference to the Dg2TeX object and a list of lines that are part of the TeX diagram source.

Dg2PDF-specific options:

pageSize => 'page size'
May be one of:
a0 - a6

Default: 'letter'

topMargin => points
bottomMargin => points
leftMargin => points
rightMargin => points
Margins are set in PDF 'user space units' which are approximately equivilent to points (1/72 of an inch).

Default for all margins: 72 * .70 (7/10s of an inch)

text_fontName => 'font' Default: 'Times-Roman',
stone_fontName => 'font' Default: 'Courier-Bold'
Text and stone fonts names may be one of these (case sensitive):
text_fontSize => points
The point size for the comment text. Diagram titles use this size plus 4, and the game title uses this size plus 6.

Default: 11

stone_fontSize => points
The stone_fontSize determines the size of the text inside stones, and may also determine the size of the stones and diagrams (see stone_height and stone_width below).

Default: 5

stone_width => points
stone_height => points
The stone_width and stone_height determine the size of the stones and diagrams.

If stone_width is not explicitly set, it is calculated from the stone_fontSize to allow up to three digits on a stone . The default stone_fontSize allows for three diagrams (with -coords) per 'letter' page if comments don't take up extra space below diagrams. If doubleDigits is specified, the stones and board are slightly smaller (stone 100 may look a bit cramped).

If stone_height is not explicitly set, it will be 1.05 * stone_width, creating a slightly rectangular diagram.

Default: undef - determined from stone_fontSize

$dg2pdf->configure (option => value, ?...?)
Change Dg2PDF options from values passed at new time.
$dg2pdf->print ($text ? , ... ?)
prints raw PDF code to file as defined at new time. Whether or not file was defined, print accumulates the PDF code for later retrieval with converted.
$dg2pdf->printComment ($text ? , ... ?)
Adds $text to the diagram comments.
$dg2pdf->comment ($comment ? , ... ?)
Inserts the PDF comment character ('%') in front of each line of each comment and prints it to file.

Note that this is not the same as the printComment method.

my $canvas = $dg2pdf->convertDiagram ($diagram)
Converts a Games::Go::Diagram into PDF.
my $converted_text = $dg2pdf->convertText ($text)
Converts $text into text for display - gee, that's not very hard. In fact, this method simply returns whatever is passed to it. This is really just a place-holder for more complicated converters.

Returns the converted text.

$title = $dg2pdf->convertProperties (\%sgfHash)
convertProperties takes a reference to a hash of properties as extracted from an SGF file. Each hash key is a property ID and the hash value is a reference to an array of property values: $hash->{propertyId}->[values]. The following SGF properties are recognized:
GN GameName
EV EVent
RO ROund
PW PlayerWhite
WR WhiteRank
PB PlayerBlack
BR BlackRank
PC PlaCe
GC GameComment
RE REsult

Both long and short property names are recognized, and all unrecognized properties are ignored with no warnings. Note that these properties are all intended as game-level notations.

prints some final PDF code to the diagram and closes the pdf object (file).


You think I'd admit it?


Reid Augustin, <[email protected]>


Copyright (C) 2005 by Reid Augustin

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available.