How to Change Font Color of Swimlane Header in Vue Diagram?

This article explains how to change the font color of a Swimlane Header in Vue Diagram. Header is the primary element for swimlanes. The header property of the swimlane allows you to define its textual description and customize its appearance in Vue Diagram.

To customize the font color of the swimlane header, you can use the color property of the style property within the swimlane header annotation. This allows greater flexibility in designing your diagrams.

Refer to the below code snippet for customization of the font color in the swimlane header:

header: {
         annotation: {
           content: 'SALES PROCESS FLOW CHART',
           // Update font color for swimlane header
           style: { fill: 'black', color: 'yellow' },
         },
       }, 

The below code example shows how to customize the font color of the swimlane header at runtime using a color picker when the swimlane is selected:

let nodes = [
 {
   id: 'swimlane',
   shape: {
     type: 'SwimLane',
     orientation: 'Horizontal',
     // customize the swimlane header
     header: {
       annotation: {
         content: 'SALES PROCESS FLOW CHART',
         //update font color for swimlane header
         style: { fill: 'black', color: 'yellow' },
       },
     },
     lanes: [
       {
         id: 'stackCanvas1',
         height: 100,
       },
     ],
     phases: [
       {
         id: 'phase1',
         offset: 170,
         header: { annotation: { content: 'Phase' } },
       },
     ],
     phaseSize: 20,
   },
   offsetX: 300,
   offsetY: 200,
   height: 200,
   width: 350,
 },
];

let diagramInstance;
// Export Vue component
export default {
 components: {
   'ejs-diagram': DiagramComponent,
 },
 data: function () {
   return {
     width: '100%',
     height: '350px',
     nodes: nodes,
   };
 },
 mounted: function () {
   // update font color for swimlane header at runtime using color picker
   diagramInstance = this.$refs.diagramObj.ej2Instances;
   fontColor.addEventListener('change', (event) => {
     let length = diagramInstance.selectedItems.nodes.length;
     if (length > 0) {
       let currentColor = event.target.value;
       diagramInstance.selectedItems.nodes[0].shape.header.annotation.style.color =
         currentColor;
       diagramInstance.dataBind();
     }
   });
 },

Refer to the working sample for additional details and implementation: Click here

Conclusion

We hope you enjoyed learning how to change the font color of the swimlane header in Vue Diagram.

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

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