Angular Konva Drag and Drop Tutorial

To implement drag and drop with Konva in Angular, you can use the ng2-konva library with the draggable property and event handlers.

For full list of properties and methods, see the Konva API Reference.

Drag and Drop Example

import { Component } from '@angular/core';
import { StageConfig } from 'konva/lib/Stage';
import { CircleConfig } from 'konva/lib/shapes/Circle';

import {
  CoreShapeComponent,
  StageComponent,
} from 'ng2-konva';

@Component({
  selector: 'app-root',
  template: `
    <ko-stage [config]="configStage">
      <ko-layer>
        <ko-circle
          [config]="configCircle"
          (dragstart)="handleDragstart($event)"
        ></ko-circle>
      </ko-layer>
    </ko-stage>
  `,
  imports: [StageComponent, CoreShapeComponent],
})
export default class App {
  public configStage: StageConfig = {
    width: window.innerWidth,
    height: window.innerHeight,
  };
  public configCircle: CircleConfig = {
    x: 100,
    y: 100,
    radius: 70,
    fill: 'red',
    stroke: 'black',
    strokeWidth: 4,
    draggable: true,
  };

  public handleDragstart(event: any): void {
    event.target.moveToTop();
  }
}

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