SVG image for node

[pradeep4321]

Can we support SVG images in place of D3J shapes for Nodes.

[danielcaldas]

This is a repeated feature request #31. Still I think an approach where we specify SVG's to customize nodes it's the way to go, that's why I'll introduce a little more detail on this issue.

So this feature could basically be achieved by passing down to nodes some svg or some path to render instead of some d3 shape. We would have something like this is the node render method:

// node/index.jsx, render method
(...)
        if (this.props.customNode) {
            // render some SVG
            return (
                <g {...gProps}>
                    // Adding some random path just for demonstration
                    <path d="M9 11.75c-.69 0-1.25.56-1.25 1.25s.56 1.25 1.25 1.25 1.25-.56 1.25-1.25-.56-1.25-1.25-1.25zm6 0c-.69 0-1.25.56-1.25 1.25s.56 1.25 1.25 1.25 1.25-.56 1.25-1.25-.56-1.25-1.25-1.25zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm0 18c-4.41 0-8-3.59-8-8 0-.29.02-.58.05-.86 2.36-1.05 4.23-2.98 5.21-5.37C11.07 8.33 14.05 10 17.42 10c.78 0 1.53-.09 2.25-.26.21.71.33 1.47.33 2.26 0 4.41-3.59 8-8 8z" {...pathProps}/>
                </g>
            );
        } else {
            // render some node symbol
            pathProps = Object.assign(pathProps, { d: nodeHelper.buildSvgSymbol(this.props.size, this.props.type) });

            return (
                <g {...gProps}>
                    <path {...pathProps}/>
                    {this.props.renderLabel && <text {...textProps}>{this.props.label}</text>}
                </g>
            );
        }
(...)

This would produce something like this,

The main problem here is that we cannot easily use d3-shape scale method to keep the graph visually consistent, as you can see the nodes are not being placed in their correct positions because a scale was not applied, and this is the main blocker for react-d3-graph to offer such feature.

I will certainly go for this in a near future, It would be great to have @singhxp feedback on this since he first requested a similar feature.

[pradeep4321]

I think the x,y location used to draw the SVG us top left corner of SVG image, if we fix the location to centre the image will look fine. i am checking this.

[rayaqin]

pradeep4321 did you manage to make it work and look fine?

[danielcaldas]

@pradeep4321 and @rayaqin and for others that might be interested, I'll be picking this up, already have an implementation in mind where rd3g users will be able to provide a resource reference to some svg.

[danielcaldas]

@pradeep4321 @rayaqin Closing this issue, react-d3-graph@1.2.0 allows for clients to provide custom svg for nodes.

[danielcaldas]

For those looking into this issue, there is a way more advanced way to customize nodes in react-d3-graph though node.viewGenerator, you can pass a custom render function per node within the config. Check out the docs