use File::chdir;
use File::Temp;
use Graph;
-use Graph::Convert;
use Graph::Reader::Dot;
use IPC::Run qw/ run binary /;
use Moose;
-use Text::Balanced qw/ extract_bracketed /;
has collation => (
is => 'ro',
isa => 'Text::Tradition::Collation',
required => 1,
+ weak_ref => 1,
);
has graph => (
my( $self, $args ) = @_;
# If we have been handed a dotfile, initialize it into a graph.
if( exists $args->{'dot'} ) {
- # Open the file, assume UTF-8
- open( my $dot, $args->{'dot'} ) or warn "Failed to read dot file";
- # TODO don't bother if we haven't opened
- binmode $dot, ":utf8";
- my $reader = Graph::Reader::Dot->new();
- my $graph = $reader->read_graph( $dot );
- $graph
- ? $self->graph( $graph )
- : warn "Failed to parse dot file " . $args->{'dot'};
+ $self->graph_from_dot( $args->{'dot'} );
}
}
-# Render the stemma as SVG.
-sub as_svg {
+sub graph_from_dot {
+ my( $self, $dotfh ) = @_;
+ # Assume utf-8
+ binmode( $dotfh, ':utf8' );
+ my $reader = Graph::Reader::Dot->new();
+ my $graph = $reader->read_graph( $dotfh );
+ if( $graph ) {
+ $self->graph( $graph );
+ # Go through the nodes and set any non-hypothetical node to extant.
+ foreach my $v ( $self->graph->vertices ) {
+ $self->graph->set_vertex_attribute( $v, 'class', 'extant' )
+ unless $self->graph->has_vertex_attribute( $v, 'class' );
+ }
+ } else {
+ warn "Failed to parse dot in $dotfh";
+ }
+}
+
+sub as_dot {
my( $self, $opts ) = @_;
- # TODO add options for display, someday
- my $dgraph = Graph::Convert->as_graph_easy( $self->graph );
- # Set some class display attributes for 'hypothetical' and 'extant' nodes
- $dgraph->set_attribute( 'flow', 'south' );
- foreach my $n ( $dgraph->nodes ) {
- if( $n->attribute( 'class' ) eq 'hypothetical' ) {
- $n->set_attribute( 'shape', 'point' );
- $n->set_attribute( 'pointshape', 'diamond' );
+
+ # Get default and specified options
+ my %graphopts = ();
+ my %nodeopts = (
+ 'fontsize' => 11,
+ 'hshape' => 'plaintext', # Shape for the hypothetical nodes
+ 'htext' => '*',
+ 'style' => 'filled',
+ 'fillcolor' => 'white',
+ 'shape' => 'ellipse', # Shape for the extant nodes
+ );
+ my %edgeopts = (
+ 'arrowhead' => 'open',
+ );
+ @graphopts{ keys %{$opts->{'graph'}} } = values %{$opts->{'graph'}}
+ if $opts->{'graph'};
+ @nodeopts{ keys %{$opts->{'node'}} } = values %{$opts->{'node'}}
+ if $opts->{'node'};
+ @edgeopts{ keys %{$opts->{'edge'}} } = values %{$opts->{'edge'}}
+ if $opts->{'edge'};
+
+ my @dotlines;
+ push( @dotlines, 'digraph stemma {' );
+ ## Print out the global attributes
+ push( @dotlines, _make_dotline( 'graph', %graphopts ) ) if keys %graphopts;
+ push( @dotlines, _make_dotline( 'edge', %edgeopts ) ) if keys %edgeopts;
+ ## Delete our special attributes from the node set before continuing
+ my $hshape = delete $nodeopts{'hshape'};
+ my $htext = delete $nodeopts{'htext'};
+ push( @dotlines, _make_dotline( 'node', %nodeopts ) ) if keys %nodeopts;
+
+ # Add each of the nodes.
+ foreach my $n ( $self->graph->vertices ) {
+ if( $self->graph->get_vertex_attribute( $n, 'class' ) eq 'hypothetical' ) {
+ # Apply our display settings for hypothetical nodes.
+ push( @dotlines, _make_dotline( $n, 'shape' => $hshape, 'label' => $htext ) );
} else {
- $n->set_attribute( 'shape', 'ellipse' );
+ # Use the default display settings.
+ push( @dotlines, " $n;" );
}
}
+ # Add each of our edges.
+ foreach my $e ( $self->graph->edges ) {
+ my( $from, $to ) = @$e;
+ push( @dotlines, " $from -> $to;" );
+ }
+ push( @dotlines, '}' );
- # Render to svg via graphviz
- my @lines = split( /\n/, $dgraph->as_graphviz() );
- # Add the size attribute
- if( $opts->{'size'} ) {
- my $sizeline = " graph [ size=\"" . $opts->{'size'} . "\" ]";
- splice( @lines, 1, 0, $sizeline );
+ return join( "\n", @dotlines );
+}
+
+
+# Another version of dot output meant for graph editing, thus
+# much simpler.
+sub editable {
+ my $self = shift;
+ my @dotlines;
+ push( @dotlines, 'digraph stemma {' );
+ my @real; # A cheap sort
+ foreach my $n ( sort $self->graph->vertices ) {
+ my $c = $self->graph->get_vertex_attribute( $n, 'class' );
+ $c = 'extant' unless $c;
+ if( $c eq 'extant' ) {
+ push( @real, $n );
+ } else {
+ push( @dotlines, _make_dotline( $n, 'class' => $c ) );
+ }
}
+ # Now do the real ones
+ foreach my $n ( @real ) {
+ push( @dotlines, _make_dotline( $n, 'class' => 'extant' ) );
+ }
+ foreach my $e ( sort _by_vertex $self->graph->edges ) {
+ my( $from, $to ) = @$e;
+ push( @dotlines, " $from -> $to;" );
+ }
+ push( @dotlines, '}' );
+ return join( "\n", @dotlines );
+}
+
+sub _make_dotline {
+ my( $obj, %attr ) = @_;
+ my @pairs;
+ foreach my $k ( keys %attr ) {
+ my $v = $attr{$k};
+ $v =~ s/\"/\\\"/g;
+ push( @pairs, "$k=\"$v\"" );
+ }
+ return sprintf( " %s [ %s ];", $obj, join( ', ', @pairs ) );
+}
+
+sub _by_vertex {
+ return $a->[0].$a->[1] cmp $b->[0].$b->[1];
+}
+
+# Render the stemma as SVG.
+sub as_svg {
+ my( $self, $opts ) = @_;
+ my $dot = $self->as_dot( $opts );
my @cmd = qw/dot -Tsvg/;
my( $svg, $err );
my $dotfile = File::Temp->new();
## TODO REMOVE
# $dotfile->unlink_on_destroy(0);
binmode $dotfile, ':utf8';
- print $dotfile join( "\n", @lines );
+ print $dotfile $dot;
push( @cmd, $dotfile->filename );
run( \@cmd, ">", binary(), \$svg );
$svg = decode_utf8( $svg );