Description

This step shows how to set the size of the label based on the size of its text by overriding the LabelStyleBase#getPreferredSize method.

Things to Try

  • Select a label, open the label editor using "F2" to edit the label's text, and see how the label size is adjusted.
  • Take a look at MySimpleLabelStyle.getPreferredSize().

Left to Do

  • Override LabelStyleBase#updateVisual to get high-performance rendering.
  • Implement a button to open the label editor.
  • Allow to change the background color of labels.
  • Create a custom edge style.
  • Create a custom port style for nodes.
  • Use the decorator pattern to add label edges to the nodes.
  • Create a custom group node style.
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