add proof-of-concept perl script to render the tree to SVG
This will be useful to generate examples for the documentation.
This commit is contained in:
Michael Stapelberg
parent
db0d66e545
commit
9e08366082
21
render-tree/Con.pm
Normal file
21
render-tree/Con.pm
Normal file
@ -0,0 +1,21 @@
|
|||||||
|
# vim:ts=4:sw=4:expandtab
|
||||||
|
package Con;
|
||||||
|
|
||||||
|
use Moose;
|
||||||
|
use MooseX::AttributeHelpers;
|
||||||
|
use v5.10;
|
||||||
|
|
||||||
|
has 'name' => (is => 'ro', isa => 'Str');
|
||||||
|
has 'width' => (is => 'rw', isa => 'Int', default => 100);
|
||||||
|
has '_nodes' => (is => 'ro', metaclass => 'Collection::Array', isa => 'ArrayRef[Con]',
|
||||||
|
default => sub { [] },
|
||||||
|
provides => {
|
||||||
|
'push' => 'add_node',
|
||||||
|
elements => 'nodes',
|
||||||
|
}
|
||||||
|
);
|
||||||
|
has 'parent' => (is => 'rw', isa => 'Con', predicate => 'has_parent');
|
||||||
|
|
||||||
|
__PACKAGE__->meta->make_immutable;
|
||||||
|
|
||||||
|
1
|
||||||
125
render-tree/render.pl
Executable file
125
render-tree/render.pl
Executable file
@ -0,0 +1,125 @@
|
|||||||
|
#!/usr/bin/env perl
|
||||||
|
# vim:ts=4:sw=4:expandtab
|
||||||
|
# © 2011 Michael Stapelberg, see LICENSE
|
||||||
|
#
|
||||||
|
# Needs SVG (libsvg-perl), IO::All (libio-all-perl), JSON::XS (libjson-xs-perl) and Moose (libmoose-perl)
|
||||||
|
#
|
||||||
|
# XXX: unfinished proof-of-concept. awaits a json dump in my.tree, renders to test.svg
|
||||||
|
# XXX: needs more beautifying (in the SVG but also in the code)
|
||||||
|
# XXX: has some rendering differences between firefox and chromium. maybe inkscape makes the file look the same in both browsers
|
||||||
|
|
||||||
|
use strict;
|
||||||
|
use warnings;
|
||||||
|
use SVG;
|
||||||
|
use Data::Dumper;
|
||||||
|
use JSON::XS;
|
||||||
|
use IO::All;
|
||||||
|
use List::Util qw(sum);
|
||||||
|
use lib qw(.);
|
||||||
|
use Con;
|
||||||
|
use v5.10;
|
||||||
|
|
||||||
|
my $input = io('my.tree')->slurp;
|
||||||
|
my $tree = decode_json($input);
|
||||||
|
my $root = parse_tree($tree);
|
||||||
|
render_tree($root);
|
||||||
|
|
||||||
|
sub parse_tree {
|
||||||
|
my ($input, $parent) = @_;
|
||||||
|
my $con = Con->new(name => $input->{name});
|
||||||
|
$con->parent($parent) if defined($parent);
|
||||||
|
for my $node (@{$input->{nodes}}) {
|
||||||
|
$con->add_node(parse_tree($node, $con));
|
||||||
|
}
|
||||||
|
|
||||||
|
return $con;
|
||||||
|
}
|
||||||
|
|
||||||
|
sub render_tree {
|
||||||
|
my ($con) = @_;
|
||||||
|
say 'rendering con ' . $con->name;
|
||||||
|
my @nodes = $con->nodes;
|
||||||
|
for my $node (@nodes) {
|
||||||
|
render_tree($node);
|
||||||
|
}
|
||||||
|
|
||||||
|
# nothing to calculate when there are no children
|
||||||
|
return unless @nodes > 0;
|
||||||
|
|
||||||
|
$con->width((@nodes > 1 ? (@nodes - 1) * 20 : 0) + sum map { $_->width } @nodes);
|
||||||
|
|
||||||
|
say $con->name . ' has width ' . $con->width;
|
||||||
|
}
|
||||||
|
|
||||||
|
# TODO: figure out the height
|
||||||
|
my $svg = SVG->new(id => "tree", width => $root->width + 5, height => '1052');
|
||||||
|
|
||||||
|
my $l1 = $svg->group(id => 'layer1');
|
||||||
|
|
||||||
|
# gaussian blur (for drop shadows)
|
||||||
|
$svg->defs()->filter(id => 'dropshadow')->fe(-type => 'gaussianblur', stdDeviation => '2.19');
|
||||||
|
|
||||||
|
my $idcnt = 0;
|
||||||
|
my $y = 10;
|
||||||
|
render_svg($root, 0, 0);
|
||||||
|
|
||||||
|
sub render_svg {
|
||||||
|
my ($con, $level, $x) = @_;
|
||||||
|
|
||||||
|
my $indent = ' ' x $level;
|
||||||
|
|
||||||
|
say $indent . 'svg-rendering con ' . $con->name . ' on level ' . $level;
|
||||||
|
say $indent . 'width: ' . $con->width;
|
||||||
|
|
||||||
|
# render the dropshadow rect
|
||||||
|
$l1->rect(
|
||||||
|
id => 'outer_rect_shadow' . $idcnt,
|
||||||
|
style => 'opacity:1.0;fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:4;stroke-opacity:1;stroke-miterlimit:4;filter:url(#dropshadow)',
|
||||||
|
width => "96",
|
||||||
|
height => '50',
|
||||||
|
#x => $x + ($con->has_parent ? ($con->parent->width - 100) / 2 : 0),
|
||||||
|
x => $x + ($con->width / 2) - (96 / 2) + 0,
|
||||||
|
y => 4 + $level * 70 + 0,
|
||||||
|
);
|
||||||
|
$idcnt++;
|
||||||
|
|
||||||
|
# render the main rect
|
||||||
|
$l1->rect(
|
||||||
|
id => 'outer_rect' . $idcnt,
|
||||||
|
style => 'opacity:1.0;fill:#c30000;fill-opacity:1;stroke:#000000;stroke-width:4;stroke-opacity:1;stroke-miterlimit:4',
|
||||||
|
width => "96",
|
||||||
|
height => '50',
|
||||||
|
x => $x + ($con->width / 2) - (96 / 2),
|
||||||
|
y => 4 + $level * 70,
|
||||||
|
);
|
||||||
|
|
||||||
|
$idcnt++;
|
||||||
|
|
||||||
|
# render the text
|
||||||
|
$l1->text(
|
||||||
|
style => 'font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:left;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:middle;fill:#000000;fill-opacity:1;stroke:none;font-family:Trebuchet MS;-inkscape-font-specification:Trebuchet MS',
|
||||||
|
x => $x + ($con->width / 2) - (100/2) + 5,
|
||||||
|
y => 4 + 15 + $level * 70,
|
||||||
|
id => 'title_'.$idcnt,
|
||||||
|
)->tspan(style => 'text-align:start;text-anchor:start')->cdata($con->name);
|
||||||
|
$idcnt++;
|
||||||
|
|
||||||
|
$y = $y + 50;
|
||||||
|
my @nodes = $con->nodes;
|
||||||
|
my $startx = $x + ($con->width / 2);
|
||||||
|
|
||||||
|
for my $node (@nodes) {
|
||||||
|
render_svg($node, $level + 1, $x);
|
||||||
|
my $mid = $x + ($node->width / 2);
|
||||||
|
$l1->path(
|
||||||
|
d => 'M ' . $startx . ',' . (4 + $level * 70 + 50) . ' ' . $mid . ',' . (4 + ($level+1) * 70),
|
||||||
|
id => 'path' . $idcnt,
|
||||||
|
style => 'fill:none;stroke:#000000;stroke-width:2px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1'
|
||||||
|
);
|
||||||
|
$x += $node->width + 20;
|
||||||
|
$idcnt++;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
$svg->render > io('test.svg');
|
||||||
Loading…
Reference in New Issue
Block a user