Layout compound nodes in cytoscape JS

Question

Layout compound nodes in cytoscape JS

518 views Asked by x21L At 02 May 2022 at 17:40

Is it possible to get rid of the marked area? The yellow and green nodes are inner nodes of the grey parent node. I am using a compound node and the cola layout.

compound node

Original Q&A

There are 1 answers

**Stephan T.** · Answer 1 · 2022-05-04T09:40:48+00:00

You can define a nodes padding by adding the following line to your stylesheet:

selector: "node",
css: {
    ...,
    padding: 0,
    ...
}

var cy = (window.cy = cytoscape({
  container: document.getElementById("cy"),
  style: [{
      selector: "node",
      css: {
        content: "data(id)",
        padding: 0,
        "text-valign": "center",
        "text-halign": "center",
        height: "60px",
        width: "60px"
      }
    },
    {
      selector: ":parent",
      css: {
        shape: "rectangle"
        //shape: 'cutrectangle',
        //shape: 'roundrectangle',
      }
    },
    {
      selector: "edge",
      css: {
        label: "\u2B24",
        "curve-style": "bezier",
        "target-arrow-shape": "data(arrow)"
      }
    },
    {
      selector: ".selectedNode",
      style: {
        "border-width": 8,
        "border-color": "#5da963"
      }
    }
  ],

  elements: {
    nodes: [{
        data: {
          id: "n0",
          parent: "n4"
        }
      },
      {
        data: {
          id: "n1",
          parent: "n5"
        }
      },
      {
        data: {
          id: "n2",
          parent: "n5"
        }
      },
      {
        data: {
          id: "n3",
          parent: "n5"
        }
      },
      {
        data: {
          id: "n4",
          parent: "n5"
        }
      },
      {
        data: {
          id: "n5"
        }
      }
    ],
    edges: [{
        data: {
          source: "n0",
          target: "n1",
          arrow: "triangle"
        }
      },
      {
        data: {
          source: "n1",
          target: "n2",
          arrow: "triangle"
        }
      },
      {
        data: {
          source: "n1",
          target: "n3",
          arrow: "triangle"
        }
      }
    ]
  },

  layout: {
    name: "concentric",
    minNodeSpacing: 140
  }
}));

cy.unbind("click");
cy.bind("click", "nodes", (evt) => {
  cy.elements().removeClass("selectedNode");
  evt.target.addClass("selectedNode");
});

cy.bind("click", "edge", function() {
  console.log("clone:");
  console.log(cy.elements().clone());
  console.log("json:");
  console.log(cy.elements().jsons());
});

body {
  font: 14px helvetica neue, helvetica, arial, sans-serif;
}

#cy {
  height: 100%;
  width: 100%;
  left: 0;
  top: 0;
  float: left;
  position: absolute;
}

.cxtmenu-disabled {
  opacity: 0.333;
}

<html>

<head>
  <meta charset=utf-8 />
  <meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
  <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/cytoscape.min.js"></script>
</head>

<body>
  <div id="cy"></div>
</body>

</html>

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Layout compound nodes in cytoscape JS

There are 1 answers

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