Upload image to redux and show in React-Konva - reactjs

Question

I have try to upload image to Redux and show in of React-Konva in many ways. But it isn't work. Both in base64 and blob. But in normal situation like using component's state to keep data(base64) it's work. I don't know why.
In my component just have button for upload and React-Konva Component for show image
this is error from base64 store in redux and show to Image Tag
class UploadButton extends Component{
constructor(props){
...
this.handleUpload = this.handleUpload.bind(this);
}
handleUpload({target}){
const reader = new FileReader();
const file = target.files[0];
reader.onloadend = () => {
this.props.dispatch({
type: 'UPLOAD_IMAGE',
image: reader.result,
});
};
reader.readAsDataURL(file);
}
render(){
return(
<div>
<input
value="Upload"
type="button"
onClick={ () => { this.uploadInput.click() } }
/>
<input
id="inputUpload"
ref={ (ref) => { this.uploadInput = ref } }
type="file"
style={ { display: 'none' } }
onChange = { (event) => { this.handleUpload(event) }}
/>
</div>
);
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { Stage, Layer, Image } from 'react-konva';
class ShowImage extends Component {
constructor(props){
super(props);
this.props = props;
this.state = {
image : null,
}
}
render(){
return (
<Stage
width={ 500 }
height={ 500 }
>
<Layer>
<Image image={ this.props.image} ></Image>
</Layer>
</Stage>
);
}
}
const mapStateToProps = ( state ) => ({
image : state.image,
});
export default connect(mapStateToProps)(ShowImage);

Answer 1

To use the image in react-konva you have to create a native instance of window.Image.
class VaderImage extends React.Component {
state = {
image: new window.Image()
};
componentDidMount() {
this.state.image.src = this.props.image;
this.state.image.onload = () => {
// need to update layer manually
this.imageNode.getLayer().batchDraw();
};
}
render() {
return (
<Image
image={this.state.image}
y={250}
ref={node => {
this.imageNode = node;
}}
/>
);
}
}
https://konvajs.github.io/docs/react/Images.html