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add link.path_generator
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‎README.md

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You can also load different data sets and configurations via URL query parameter. Below is a table with all the data sets available in the live sandbox for you to interactively explore different kinds of integrations with the library.
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| Name | Link | Source | Description |
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| :----- | :---------------------------------------------------------------------------------------- | :------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| small | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=small) | `sandbox/data/small` | This is a good example to get you started. It has only 4 nodes. It's good to discuss over integration details and it's also good to report issues that you might found in the library. It's much easier to debug over a tiny graph. |
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| custom | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=custom-node) | `sandbox/data/custom-node` | In this example you'll be able to see the power of the feature [node.viewGenerator](https://danielcaldas.github.io/react-d3-graph/docs/#node-view-generator) to create highly customizable nodes for you graph that go beyond the simple shapes that come out of the box with the library. |
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| marvel | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=marvel) | `sandbox/data/marvel` | In this thematic example you can see how several features such as: [nodeHighlightBehavior](https://danielcaldas.github.io/react-d3-graph/docs/#node-highlight-behavior), [custom SVGs for nodes](https://danielcaldas.github.io/react-d3-graph/docs/#node-svg), [collapsible](https://danielcaldas.github.io/react-d3-graph/docs/#collapsible) etc. come together on top of a directed graph that displays some characters from the Marvel Universe. |
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| static | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=static) | `sandbox/data/static` | If your goal is not to have nodes dancing around with the default [d3 forces](https://danielcaldas.github.io/react-d3-graph/docs/#config-d3) that the library provides, you can opt by making your nodes static and positioned them always in the same _(x, y)_ coordinates. To achieve this you can make use of [staticGraphWithDragAndDrop](https://danielcaldas.github.io/react-d3-graph/docs/#static-graph-with-drag-and-drop) or [staticGraph](https://danielcaldas.github.io/react-d3-graph/docs/#static-graph) |
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| Name | Link | Source | Description |
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| :---------- | :---------------------------------------------------------------------------------------- | :------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| small | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=small) | `sandbox/data/small` | This is a good example to get you started. It has only 4 nodes. It's good to discuss over integration details and it's also good to report issues that you might found in the library. It's much easier to debug over a tiny graph. |
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| custom_node | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=custom-node) | `sandbox/data/custom-node` | In this example you'll be able to see the power of the feature [node.viewGenerator](https://danielcaldas.github.io/react-d3-graph/docs/#node-view-generator) to create highly customizable nodes for you graph that go beyond the simple shapes that come out of the box with the library. |
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| custom_link | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=custom-link) | `sandbox/data/custom-link` | In this example you'll be able to see the power of the feature [link.pathGenerator](https://danielcaldas.github.io/react-d3-graph/docs/#link-path-generator) to create highly customizable links for you graph. |
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| marvel | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=marvel) | `sandbox/data/marvel` | In this thematic example you can see how several features such as: [nodeHighlightBehavior](https://danielcaldas.github.io/react-d3-graph/docs/#node-highlight-behavior), [custom SVGs for nodes](https://danielcaldas.github.io/react-d3-graph/docs/#node-svg), [collapsible](https://danielcaldas.github.io/react-d3-graph/docs/#collapsible) etc. come together on top of a directed graph that displays some characters from the Marvel Universe. |
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| static | [demo](https://danielcaldas.github.io/react-d3-graph/sandbox/index.html?data=static) | `sandbox/data/static` | If your goal is not to have nodes dancing around with the default [d3 forces](https://danielcaldas.github.io/react-d3-graph/docs/#config-d3) that the library provides, you can opt by making your nodes static and positioned them always in the same _(x, y)_ coordinates. To achieve this you can make use of [staticGraphWithDragAndDrop](https://danielcaldas.github.io/react-d3-graph/docs/#static-graph-with-drag-and-drop) or [staticGraph](https://danielcaldas.github.io/react-d3-graph/docs/#static-graph) |
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Do you want to visualize your own data set on the live sandbox? Just submit a PR! You're welcome 😁.
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‎docs/DOCUMENTATION.md

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The stroke-linecap options are:- "butt"
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- "round"
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- "square" (optional, default `"butt"`)
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- `link.pathGenerator` **[Function][190]** <a id="link-path-generator" href="#link-path-generator">🔗</a> 🔍 function that receives path props and returns a JSX view.
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```js
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pathGenerator: ( props, { id, label, source, target, labelGenerator } ) =>
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<CustomLink id={id} props={props} label={label} labelGenerator={labelGenerator}
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source={source} target={target}/>,
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```
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### Examples
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},
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...
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}
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```
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```
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- `linkCallbacks` **[Array][189]&lt;[Function][190]>** array of callbacks for used defined event handler for link interactions.
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- `config` **[Object][188]** an object containing rd3g consumer defined configurations [config][200] for the graph.
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- `highlightedNode` **[string][187]** this value contains a string that represents the some currently highlighted node.

‎sandbox/data/custom-link/CustomLink.jsx

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/* eslint-disable valid-jsdoc */
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import React from "react";
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/**
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* @param {Object} params component props to render.
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* @param {Object} params.props path props
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* @param {string} params.id path id
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* @param {string} params.label path label
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* @param {Function} params.labelGenerator path label generator
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* @param {Object} params.source source node
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* @param {Object} params.target target node
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*/
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function CustomLink(params) {
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const { id, props, labelGenerator, source, target } = params;
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const isReverse = target.x < source.x;
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let lineProps = props;
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if (isReverse) {
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const { markerEnd, d, ...rest } = props;
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const items = d.split(" ");
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const [sx, sy] = items[0].replace("M", "").split(",");
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const [tx, ty] = items[items.length - 1].split(",");
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const sOffset = { x: source.x - sx, y: source.y - sy };
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const tOffset = { x: target.x - tx, y: target.y - ty };
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const reverseD = `M${target.x - tOffset.x},${target.y - tOffset.y} ${source.x - sOffset.x},${source.y - sOffset.y}`;
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lineProps = { ...rest, markerStart: markerEnd, d: reverseD };
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}
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return (
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<>
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<path {...lineProps} id={id} />
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{labelGenerator && labelGenerator()}
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</>
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);
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}
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export default CustomLink;

‎sandbox/data/custom-link/custom-link.config.js

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import React from "react";
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import CustomLink from "./CustomLink";
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export default {
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automaticRearrangeAfterDropNode: false,
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collapsible: false,
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height: 400,
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highlightDegree: 1,
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highlightOpacity: 0.2,
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linkHighlightBehavior: true,
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maxZoom: 8,
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minZoom: 0.1,
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nodeHighlightBehavior: true,
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panAndZoom: false,
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staticGraph: false,
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width: 800,
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directed: true,
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node: {
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color: "#d3d3d3",
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fontColor: "black",
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fontSize: 12,
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fontWeight: "normal",
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highlightColor: "red",
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highlightFontSize: 12,
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highlightFontWeight: "bold",
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highlightStrokeColor: "SAME",
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highlightStrokeWidth: 1.5,
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labelProperty: "name",
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mouseCursor: "pointer",
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opacity: 1,
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renderLabel: true,
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size: 450,
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strokeColor: "none",
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strokeWidth: 1.5,
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svg: "",
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symbolType: "circle",
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},
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link: {
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color: "#d3d3d3",
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fontColor: "blue",
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fontSize: 10,
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highlightColor: "blue",
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highlightFontWeight: "bold",
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labelProperty: link => `from ${link.source} to ${link.target}`,
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opacity: 1,
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renderLabel: true,
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semanticStrokeWidth: false,
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strokeWidth: 4,
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pathGenerator: (props, { id, label, source, target, labelGenerator }) => (
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<CustomLink id={id} props={props} label={label} labelGenerator={labelGenerator} source={source} target={target} />
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),
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},
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d3: {
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gravity: -400,
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linkLength: 300,
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},
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};

‎sandbox/data/custom-link/custom-link.data.js

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module.exports = {
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links: [
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{
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source: 1,
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target: 2,
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},
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{
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source: 1,
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target: 3,
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},
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{
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source: 1,
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target: 4,
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},
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{
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source: 2,
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target: 3,
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},
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],
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nodes: [
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{
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id: 1,
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name: "Node 1",
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},
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{
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id: 2,
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name: "Node 2",
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},
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{
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id: 3,
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name: "Node 3",
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},
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{
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id: 4,
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name: "Node 4",
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},
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],
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};

‎src/components/graph/graph.builder.js

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strokeDashoffset,
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strokeLinecap,
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target,
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pathGenerator: link.pathGenerator || config.link.pathGenerator,
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onClickLink: linkCallbacks.onClickLink,
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onMouseOutLink: linkCallbacks.onMouseOutLink,
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onMouseOverLink: linkCallbacks.onMouseOverLink,

‎src/components/graph/graph.config.js

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strokeDasharray: 0,
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strokeDashoffset: 0,
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strokeLinecap: "butt",
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pathGenerator: null,
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},
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};

‎src/components/graph/graph.renderer.jsx

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highlightedLink,
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transform
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);
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return <Link key={key} id={key} {...props} />;
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const node = { source: nodes[props.source], target: nodes[props.target] };
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return <Link key={key} id={key} {...props} node={node} />;
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});
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}
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‎src/components/link/Link.jsx

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@@ -92,7 +92,7 @@ export default class Link extends React.Component {
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lineProps.markerEnd = `url(#${this.props.markerId})`;
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}
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const { label, id } = this.props;
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const { label, id, node } = this.props;
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const textProps = {
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dy: -1,
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style: {
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},
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};
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return (
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<g>
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<path {...lineProps} id={id} />
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{label && (
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const labelGenerator = label
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? () => (
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<text style={{ textAnchor: "middle" }} {...textProps}>
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<textPath href={`#${id}`} startOffset="50%">
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{label}
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</textPath>
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</text>
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)}
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</g>
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);
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)
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: () => null;
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if (this.props.pathGenerator) {
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return (
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<>
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{this.props.pathGenerator(lineProps, {
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id,
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label,
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labelGenerator,
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source: node?.source,
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target: node?.target,
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})}
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</>
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);
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} else {
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return (
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<g>
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<path {...lineProps} id={id} />
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{labelGenerator()}
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</g>
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);
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}
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}
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}

‎src/components/marker/Marker.jsx

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refY="0"
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markerWidth={this.props.markerWidth}
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markerHeight={this.props.markerHeight}
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orient="auto"
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orient="auto-start-reverse"
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fill={this.props.fill}
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>
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<path d="M0,-5L10,0L0,5" />

‎test/graph/__snapshots__/graph.snapshot.spec.js.snap

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id="marker-small"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"
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id="marker-small-highlighted"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"
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id="marker-medium"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"
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id="marker-medium-highlighted"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"
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id="marker-large"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"
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id="marker-large-highlighted"
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markerHeight={6}
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markerWidth={6}
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orient="auto"
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orient="auto-start-reverse"
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refX={0}
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refY="0"
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viewBox="0 -5 10 10"

‎test/link/__snapshots__/link.snapshot.spec.js.snap

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/>
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</g>
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`;
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exports[`Snapshot - Link Component should match snapshot for pathGenerator 1`] = `null`;

‎test/link/link.snapshot.spec.js

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);
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that.tree = that.link.toJSON();
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const pathGenerator = () => () => "pathGenerator";
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that.linkForPathGenerator = renderer.create(
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<Link
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x1="2"
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y1="2"
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x2="4"
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y2="4"
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opacity="1"
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stroke="red"
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strokeWidth="2"
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onClickLink={that.callbackMock}
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strokeDasharray={0}
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strokeDashoffset={0}
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strokeLinecap="butt"
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node={{ source: { x: 2, y: 2 }, target: { x: 4, y: 4 } }}
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pathGenerator={pathGenerator}
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/>
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);
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that.treeForPathGenerator = that.linkForPathGenerator.toJSON();
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});
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test("should match snapshot", () => {
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expect(that.tree).toMatchSnapshot();
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});
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test("should match snapshot for pathGenerator", () => {
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expect(that.treeForPathGenerator).toMatchSnapshot();
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});
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});

‎test/marker/__snapshots__/marker.snapshot.spec.js.snap

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className="marker"
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fill="green"
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id="id"
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orient="auto"
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orient="auto-start-reverse"
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refX="5"
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refY="0"
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viewBox="0 -5 10 10"

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