Cookbook Draw App Logo

In this example, we will learn how to personalize render, to draw the Application Logo.

use Bartlett\GraphUml;
use Bartlett\GraphPlantUml\PlantUmlGenerator;

use Graphp\Graph\Graph;

$generator = new PlantUmlGenerator();
$generator->setExecutable('vendor/bin/plantuml');
$graph = new Graph();
$builder = new GraphUml\ClassDiagramBuilder(
    $generator,
    $graph,
    [
        'label_format' => 'default',
    ]
);

$builder->createVertexClass(PlantUmlGenerator::class);

// personalize render
$graph->setAttribute($generator->getPrefix() . 'graph.bgcolor', 'transparent');
$graph->setAttribute($generator->getPrefix() . 'cluster.Bartlett\\GraphPlantUml.graph.bgcolor', 'LightSteelBlue');
$graph->setAttribute($generator->getPrefix() . 'cluster.Bartlett\\GraphUml\\Generator.graph.bgcolor', 'limegreen');

// show UML diagram statements
echo $generator->createScript($graph);
// default format is PNG
echo $generator->createImageFile($graph) . ' file generated' . PHP_EOL;

NOTE Usage of getPrefix() is not necessary here. We keep it, in case you’ll have custom generator rather than the default one.

• We specify a transparent background color with graph.bgcolor attribute
• We specify the background color of Bartlett\GraphPlantUml namespace with cluster.Bartlett\\GraphPlantUml.graph.bgcolor attribute
• We specify the background color of Bartlett\GraphUml\Generator namespace with cluster.Bartlett\\GraphUml.graph.bgcolor attribute

All colors are defined at https://plantuml.com/en/color

Namespace separator character is escaped in the attribute name, while cluster identify a subgraph