HTML5 Canvas Drag and Drop an Image

To drag and drop an image with Konva, we can set the draggable property to true when we instantiate a shape, or we can use the draggable() method. The draggable() method enables drag and drop for both desktop and mobile applications automatically.

Vanilla

import Konva from 'konva';

const stage = new Konva.Stage({
  container: 'container',
  width: window.innerWidth,
  height: window.innerHeight,
});

const layer = new Konva.Layer();

const imageObj = new Image();
imageObj.onload = () => {
  const yoda = new Konva.Image({
    x: 50,
    y: 50,
    image: imageObj,
    width: 106,
    height: 118,
    draggable: true,
  });

  // add cursor styling
  yoda.on('mouseover', function () {
    document.body.style.cursor = 'pointer';
  });
  yoda.on('mouseout', function () {
    document.body.style.cursor = 'default';
  });

  layer.add(yoda);
  layer.draw();
};
imageObj.src = 'https://konvajs.org/assets/yoda.jpg';

stage.add(layer);

Open Sandbox

React

import { Stage, Layer, Image } from 'react-konva';
import { useImage } from 'react-konva';


const App = () => {
  const [image] = useImage('https://konvajs.org/assets/yoda.jpg');

  return (
    <Stage width={window.innerWidth} height={window.innerHeight}>
      <Layer>
        {image && (
          <Image
            x={50}
            y={50}
            image={image}
            width={106}
            height={118}
            draggable
            onMouseEnter={(e) => {
              document.body.style.cursor = 'pointer';
            }}
            onMouseLeave={(e) => {
              document.body.style.cursor = 'default';
            }}
          />
        )}
      </Layer>
    </Stage>
  );
};

export default App;

Open Sandbox

Vue

<template>
  <v-stage :config="stageSize">
    <v-layer>
      <v-image
        v-if="image"
        :config="imageConfig"
        @mouseenter="handleMouseEnter"
        @mouseleave="handleMouseLeave"
      />
    </v-layer>
  </v-stage>
</template>

<script setup>
import { ref, onMounted } from 'vue';

const stageSize = {
  width: window.innerWidth,
  height: window.innerHeight
};

const image = ref(null);

onMounted(() => {
  const imageObj = new Image();
  imageObj.src = 'https://konvajs.org/assets/yoda.jpg';
  imageObj.onload = () => {
    image.value = imageObj;
  };
});

const imageConfig = {
  x: 50,
  y: 50,
  image: image,
  width: 106,
  height: 118,
  draggable: true
};

const handleMouseEnter = () => {
  document.body.style.cursor = 'pointer';
};

const handleMouseLeave = () => {
  document.body.style.cursor = 'default';
};
</script>

Open Sandbox