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Inkscape - a helper for Inkscape extensions writen in PERL
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my ($w, $h) = $inkscape->getCanvasSize;
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$svg->setElAttribute {tag=>'svg',pos=>0}, 'width', $w * 2;
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This package try to do the common initial work in inkscape extensions
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and provide a collection of helper methods about inkscape interaction
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and SVG basic manipulation.
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If you want more power to SVG manipulation, try use SVG::DOM together.
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http://search.cpan.org/~ronan/SVG-2.44/lib/SVG/DOM.pm
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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our $VERSION = "0.01";
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The B<%args> hash gives to you all arguments provided by Inkscape.
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$svg->setElAttribute 'svg', 'width', $w * $args{zoom};
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The B<id> will allways be an array reference. Also if it is empty.
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#use vars qw($VERSION $inkscape %args @ISA @EXPORT %EXPORT_TAGS $TODO);
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#my $inkscape = Inkscape->new;
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#@EXPORT = qw( $inkscape );
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if ( defined $_[1] && $_[1] eq 'AUTO_LOAD' ) {
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#$inkscape->getArgs(@ARGV);
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if ( $#ARGV > -1 && -f $ARGV[$#ARGV] ) {
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#$inkscape->getSVG($ARGV[$#ARGV]);
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@argv = @ARGV if ( $#argv == -1 );
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my %args = (id => []);
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if ( m/^--([^=]+)=(.*)$/ ) {
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$val = 1 if $val eq 'true';
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$val = 0 if $val eq 'false';
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if ( defined $args{$key} ) {
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if ( ref($args{$key}) ne 'ARRAY' ) {
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$args{$key} = [ $args{$key} ];
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push( @{$args{$key}}, $val );
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SVGHelper->new( $file );
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=head2 Inkscape Methods
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The $inkscape auto defined object is a helper to use non interactive
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inkscape interface. You allways need to provide an SVG file path to
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#$self->{args} = ( id => [] );
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$singleton ||= bless $self, $class;
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} # end package Inkscape
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
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our $VERSION = "0.01";
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=head2 SVGHelper Methods
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The $svg auto defined object is a helper to access the SVG file provided
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by the Inkscape. That is not a singleton, so if you want manipulate other
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SVG files, you can instanciate a new SVGHelper.
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my $mysvg = SVGHelper->new( '/path/to/my.svg' );
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Instantiates SVGHelper with a SVG file.
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my ( $class, $file ) = @_;
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$file = $ARGV[$#ARGV] if ( ! $file );
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open SVG, $file or die "Can't open \"$file\": $!\n";
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$self->{file} = $file;
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$self->{code} = join('',<SVG>);
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=head3 generateSearchRegExp
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if ( $svg->{code} =~ m/$svg->generateSearchRegExp({class=>"hot"})/ )
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print "Yes! there are Hot elements!"
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Generates the regexp string to localize tags in the SVG, based in the arguments
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on the localizator hash.
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Arguments to localize the tags:
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B<{id}> = "<some tag id>"
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Select only one tag with this id. You don't need to use other select
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arguments with this one.
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When you use inprecise arguments for selection the position will select
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only one tag in the defined position at the finded list of tags.
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B<{tag}> = "<tag_name>"
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Select by tag name, may select a list if you don't use {pos}.
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B<{>B<<any tag attribute>>B<}> = <a valid attribute value>
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sub generateSearchRegExp {
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# '.*' in a value will break all. we must change '.' by '[^"]'
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=head3 setElAttribute
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# Setting an atribute in a tag localizated it's id:
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$svg->setElAttribute {id=>'myDrawing'}, 'width', $w * 2;
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# Setting an atribute in a tag localizated it's position:
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$svg->setElAttribute {tag=>'svg',pos=>0}, 'width', $w * 2;
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# Setting an atribute in some tags localizated by atributes:
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$svg->setElAttribute {tag=>'circle',r=>10}, 'r', 50;
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This method will set an atribute in a tag or in a colection of tags, selected
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by the localizator hash.
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my ( $searchArgs, $att, $val ) = @_;
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print $self->generateSearchRegExp( $searchArgs );
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$_[0] =~ m/^([.0-9]*)\s*([^ ]*)/;
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my $unFrom = $2 || 'px';
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my $appendUnit = $_[2];
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# From http://www.w3.org/TR/SVG/coords.html#Units
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# "1pt" equals "1.25px" (and therefore 1.25 user units)
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# "1pc" equals "15px" (and therefore 15 user units)
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# "1mm" would be "3.543307px" (3.543307 user units)
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# "1cm" equals "35.43307px" (and therefore 35.43307 user units)
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# "1in" equals "90px" (and therefore 90 user units)
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( ( $num * $equivPX{$unFrom} ) / $equivPX{$unTo} ) . ( $appendUnit ? $unTo : '' );
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my ($w, $h) = $svg->getCanvasSize;
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Get the B<width> and B<height> values of the B<<svg>> tag.
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$self->{code} =~ m/<svg\s[^>]*width="([^"]*)"[^>]*height="([^"]*)"[^>]*>/;
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( $self->convertUnit($1, $unitTo), $self->convertUnit($2, $unitTo) ) :
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my $sysNULL = ( -e '/dev/null' )? '/dev/null' : 'NIL';
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my $x = `inkscape --query-id=$_[0] --query-x "$self->{file}" 2>$sysNULL`;
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my $y = `inkscape --query-id=$_[0] --query-y "$self->{file}" 2>$sysNULL`;
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return ( $x )? ( $x, $y ) : undef;
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my $w = `inkscape --query-id=$_[0] --query-width "$self->{file}" 2>$sysNULL`;
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my $h = `inkscape --query-id=$_[0] --query-height "$self->{file}" 2>$sysNULL`;
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return ( $w )? ( $w, $h ) : undef;
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} # end package SVGHelper
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Aurelio A. Heckert <aurium@gmail.com>
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Copyright (C) 2008 Aurelio A. Heckert <aurium@gmail.com>
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This PERL module is a free software licenced under LGPL v3
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http://www.gnu.org/licenses/lgpl-3.0-standalone.html
added
removed
share/extensions/Inkscape.pm
