How to Customize Size of Expand/Collapse Icon in Angular Diagram?

The Angular Diagram allows to expand/collapse the subtrees of a layout. The node’s isExpanded property allows you to expand/collapse its children. The following code example shows how to expand/collapse the children of a node.
The icon for expand and collapse can be customized by setting the shape property to one of the following options: “None,” “Plus,” “Minus,” “ArrowUp,” “ArrowDown,” “Path,” or “Template.” To increase the size of the icon, you can adjust the height and width properties of the expand/collapse icon.

public getNodeDefaults(obj: NodeModel | any, diagram: Diagram): NodeModel {
   obj.expandIcon = {
     height: 20,
     width: 20,
     shape: 'Minus',
     fill: 'lightgray',
     offset: {
       x: 0.5,
       y: 0.85,
     },
     borderWidth : 3,
   };
   obj.collapseIcon.offset = {
     x: 0.5,
     y: 0.85,
   };
   obj.collapseIcon.height = 20;
   obj.collapseIcon.width = 20;
   obj.collapseIcon.shape = 'Plus';
   obj.borderColor = 'white';
   obj.backgroundColor = '#6BA5D7'; 
   obj.style = {
     fill: 'transparent',
     strokeWidth: 2,
   };
   return obj;
 }

Sample: https://stackblitz.com/edit/github-dayb7m-nc3scy?file=src%2Fapp.component.ts,index.html

Conclusion
I hope you enjoyed learning how to customize size of expand/collapse icon in Angular Diagram.

You can refer to our Angular Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Angular Diagram example to understand how to create and manipulate data.

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