mirror of
https://github.com/mermaid-js/mermaid.git
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Merge pull request #5729 from mermaid-js/elk-migration
Support flowchart-elk to use layout: elk
This commit is contained in:
Knut Sveidqvist
GitHub
commit
f4097dfd82
@ -822,7 +822,7 @@ flowchart LR
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<script type="module">
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import mermaid from './mermaid.esm.mjs';
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import { layouts } from './mermaid-layout-elk.esm.mjs';
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import layouts from './mermaid-layout-elk.esm.mjs';
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mermaid.registerLayoutLoaders(layouts);
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mermaid.parseError = function (err, hash) {};
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@ -147,7 +147,7 @@ flowchart LR
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<script type="module">
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import mermaid from './mermaid.esm.mjs';
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import { layouts } from './mermaid-layout-elk.esm.mjs';
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import layouts from './mermaid-layout-elk.esm.mjs';
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mermaid.registerLayoutLoaders(layouts);
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mermaid.parseError = function (err, hash) {};
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@ -159,7 +159,7 @@ flowchart LR
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<script type="module">
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import mermaid from './mermaid.esm.mjs';
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// import { layouts } from './mermaid-layout-elk.esm.mjs';
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// import layouts from './mermaid-layout-elk.esm.mjs';
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// mermaid.registerLayoutLoaders(layouts);
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mermaid.parseError = function (err, hash) {
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console.error('Mermaid error: ', err);
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@ -1222,7 +1222,7 @@ direction LR
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<script type="module">
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import mermaid from './mermaid.esm.mjs';
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import { layouts } from './mermaid-layout-elk.esm.mjs';
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import layouts from './mermaid-layout-elk.esm.mjs';
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mermaid.registerLayoutLoaders(layouts);
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mermaid.parseError = function (err, hash) {
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@ -1,7 +1,7 @@
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import mermaid from './mermaid.esm.mjs';
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import { layouts } from './mermaid-layout-elk.esm.mjs';
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import externalExample from './mermaid-example-diagram.esm.mjs';
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import layouts from './mermaid-layout-elk.esm.mjs';
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import zenUml from './mermaid-zenuml.esm.mjs';
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import mermaid from './mermaid.esm.mjs';
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function b64ToUtf8(str) {
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return decodeURIComponent(escape(window.atob(str)));
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@ -16,7 +16,7 @@
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#### Defined in
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[packages/mermaid/src/rendering-util/render.ts:9](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L9)
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[packages/mermaid/src/rendering-util/render.ts:11](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L11)
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---
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@ -26,7 +26,7 @@
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#### Defined in
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[packages/mermaid/src/rendering-util/render.ts:8](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L8)
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[packages/mermaid/src/rendering-util/render.ts:10](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L10)
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---
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@ -36,4 +36,4 @@
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#### Defined in
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[packages/mermaid/src/rendering-util/render.ts:7](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L7)
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[packages/mermaid/src/rendering-util/render.ts:9](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/render.ts#L9)
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@ -1,45 +0,0 @@
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{
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"name": "@mermaid-js/flowchart-elk",
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"version": "1.0.0-rc.1",
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"description": "Flowchart plugin for mermaid with ELK layout",
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"module": "dist/mermaid-flowchart-elk.core.mjs",
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"types": "dist/packages/mermaid-flowchart-elk/src/detector.d.ts",
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"type": "module",
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"exports": {
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".": {
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"import": "./dist/mermaid-flowchart-elk.core.mjs",
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"types": "./dist/packages/mermaid-flowchart-elk/src/detector.d.ts"
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},
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"./*": "./*"
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},
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"keywords": [
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"diagram",
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"markdown",
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"flowchart",
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"elk",
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"mermaid"
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],
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"scripts": {
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"prepublishOnly": "pnpm -w run build"
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},
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"repository": {
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"type": "git",
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"url": "https://github.com/mermaid-js/mermaid"
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},
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"author": "Knut Sveidqvist",
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"license": "MIT",
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"dependencies": {
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"d3": "^7.9.0",
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"dagre-d3-es": "7.0.10",
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"elkjs": "^0.9.2",
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"khroma": "^2.1.0"
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},
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"devDependencies": {
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"concurrently": "^8.2.2",
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"mermaid": "workspace:^",
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"rimraf": "^5.0.5"
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},
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"files": [
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"dist"
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]
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}
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@ -1,75 +0,0 @@
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import plugin from './detector.js';
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import { describe, it } from 'vitest';
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const { detector } = plugin;
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describe('flowchart-elk detector', () => {
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it('should fail for dagre-d3', () => {
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expect(
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detector('flowchart', {
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flowchart: {
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defaultRenderer: 'dagre-d3',
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},
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})
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).toBe(false);
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});
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it('should fail for dagre-wrapper', () => {
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expect(
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detector('flowchart', {
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flowchart: {
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defaultRenderer: 'dagre-wrapper',
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},
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})
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).toBe(false);
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});
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it('should succeed for elk', () => {
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expect(
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detector('flowchart', {
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flowchart: {
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defaultRenderer: 'elk',
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},
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})
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).toBe(true);
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expect(
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detector('graph', {
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flowchart: {
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defaultRenderer: 'elk',
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},
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})
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).toBe(true);
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});
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// The error from the issue was reproduced with mindmap, so this is just an example
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// what matters is the keyword somewhere inside graph definition
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it('should check only the beginning of the line in search of keywords', () => {
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expect(
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detector('mindmap ["Descendant node in flowchart"]', {
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flowchart: {
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defaultRenderer: 'elk',
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},
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})
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).toBe(false);
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expect(
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detector('mindmap ["Descendant node in graph"]', {
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flowchart: {
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defaultRenderer: 'elk',
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},
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})
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).toBe(false);
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});
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it('should detect flowchart-elk', () => {
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expect(detector('flowchart-elk')).toBe(true);
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});
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it('should not detect class with defaultRenderer set to elk', () => {
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expect(
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detector('class', {
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flowchart: {
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defaultRenderer: 'elk',
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},
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})
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).toBe(false);
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});
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});
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@ -1,32 +0,0 @@
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import type {
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ExternalDiagramDefinition,
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DiagramDetector,
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DiagramLoader,
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} from '../../mermaid/src/diagram-api/types.js';
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const id = 'flowchart-elk';
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const detector: DiagramDetector = (txt, config): boolean => {
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if (
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// If diagram explicitly states flowchart-elk
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/^\s*flowchart-elk/.test(txt) ||
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// If a flowchart/graph diagram has their default renderer set to elk
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(/^\s*(flowchart|graph)/.test(txt) && config?.flowchart?.defaultRenderer === 'elk')
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) {
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return true;
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}
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return false;
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};
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const loader: DiagramLoader = async () => {
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const { diagram } = await import('./diagram-definition.js');
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return { id, diagram };
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};
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const plugin: ExternalDiagramDefinition = {
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id,
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detector,
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loader,
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};
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export default plugin;
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@ -1,12 +0,0 @@
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// @ts-ignore: JISON typing missing
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import parser from '../../mermaid/src/diagrams/flowchart/parser/flow.jison';
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import db from '../../mermaid/src/diagrams/flowchart/flowDb.js';
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import styles from '../../mermaid/src/diagrams/flowchart/styles.js';
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import renderer from './flowRenderer-elk.js';
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export const diagram = {
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db,
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renderer,
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parser,
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styles,
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};
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@ -1,888 +0,0 @@
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import { select, line, curveLinear } from 'd3';
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import { insertNode } from '../../mermaid/src/dagre-wrapper/nodes.js';
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import insertMarkers from '../../mermaid/src/dagre-wrapper/markers.js';
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import { insertEdgeLabel } from '../../mermaid/src/dagre-wrapper/edges.js';
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import { findCommonAncestor } from './render-utils.js';
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import { labelHelper } from '../../mermaid/src/dagre-wrapper/shapes/util.js';
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import { getConfig } from '../../mermaid/src/config.js';
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import { log } from '../../mermaid/src/logger.js';
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import utils from '../../mermaid/src/utils.js';
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import { setupGraphViewbox } from '../../mermaid/src/setupGraphViewbox.js';
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import common from '../../mermaid/src/diagrams/common/common.js';
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import { interpolateToCurve, getStylesFromArray } from '../../mermaid/src/utils.js';
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import ELK from 'elkjs/lib/elk.bundled.js';
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import { getLineFunctionsWithOffset } from '../../mermaid/src/utils/lineWithOffset.js';
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import { addEdgeMarkers } from '../../mermaid/src/dagre-wrapper/edgeMarker.js';
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const elk = new ELK();
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let portPos = {};
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const conf = {};
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export const setConf = function (cnf) {
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const keys = Object.keys(cnf);
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for (const key of keys) {
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conf[key] = cnf[key];
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}
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};
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let nodeDb = {};
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// /**
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// * Function that adds the vertices found during parsing to the graph to be rendered.
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// *
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// * @param vert Object containing the vertices.
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// * @param g The graph that is to be drawn.
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// * @param svgId
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// * @param root
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// * @param doc
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// * @param diagObj
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// */
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export const addVertices = async function (vert, svgId, root, doc, diagObj, parentLookupDb, graph) {
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const svg = root.select(`[id="${svgId}"]`);
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const nodes = svg.insert('g').attr('class', 'nodes');
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const keys = [...vert.keys()];
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// Iterate through each item in the vertex object (containing all the vertices found) in the graph definition
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await Promise.all(
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keys.map(async function (id) {
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const vertex = vert.get(id);
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/**
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* Variable for storing the classes for the vertex
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*
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* @type {string}
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*/
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let classStr = 'default';
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if (vertex.classes.length > 0) {
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classStr = vertex.classes.join(' ');
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}
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classStr = classStr + ' flowchart-label';
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const styles = getStylesFromArray(vertex.styles);
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// Use vertex id as text in the box if no text is provided by the graph definition
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let vertexText = vertex.text !== undefined ? vertex.text : vertex.id;
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// We create a SVG label, either by delegating to addHtmlLabel or manually
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const labelData = { width: 0, height: 0 };
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const ports = [
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{
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id: vertex.id + '-west',
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layoutOptions: {
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'port.side': 'WEST',
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},
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},
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{
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id: vertex.id + '-east',
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layoutOptions: {
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'port.side': 'EAST',
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},
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},
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{
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id: vertex.id + '-south',
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layoutOptions: {
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'port.side': 'SOUTH',
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},
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},
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{
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id: vertex.id + '-north',
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layoutOptions: {
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'port.side': 'NORTH',
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},
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},
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];
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let radius = 0;
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let _shape = '';
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let layoutOptions = {};
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// Set the shape based parameters
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switch (vertex.type) {
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case 'round':
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radius = 5;
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_shape = 'rect';
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break;
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case 'square':
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_shape = 'rect';
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break;
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case 'diamond':
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_shape = 'question';
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layoutOptions = {
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portConstraints: 'FIXED_SIDE',
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};
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break;
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case 'hexagon':
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_shape = 'hexagon';
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break;
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case 'odd':
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_shape = 'rect_left_inv_arrow';
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break;
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case 'lean_right':
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_shape = 'lean_right';
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break;
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case 'lean_left':
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_shape = 'lean_left';
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break;
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case 'trapezoid':
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_shape = 'trapezoid';
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break;
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case 'inv_trapezoid':
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_shape = 'inv_trapezoid';
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break;
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case 'odd_right':
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_shape = 'rect_left_inv_arrow';
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break;
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case 'circle':
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_shape = 'circle';
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break;
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case 'ellipse':
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_shape = 'ellipse';
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break;
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case 'stadium':
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_shape = 'stadium';
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break;
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case 'subroutine':
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_shape = 'subroutine';
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break;
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case 'cylinder':
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_shape = 'cylinder';
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break;
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case 'group':
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_shape = 'rect';
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break;
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case 'doublecircle':
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_shape = 'doublecircle';
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break;
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default:
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_shape = 'rect';
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}
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// Add the node
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const node = {
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labelStyle: styles.labelStyle,
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shape: _shape,
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labelText: vertexText,
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labelType: vertex.labelType,
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rx: radius,
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ry: radius,
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class: classStr,
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style: styles.style,
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id: vertex.id,
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link: vertex.link,
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linkTarget: vertex.linkTarget,
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tooltip: diagObj.db.getTooltip(vertex.id) || '',
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domId: diagObj.db.lookUpDomId(vertex.id),
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haveCallback: vertex.haveCallback,
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width: vertex.type === 'group' ? 500 : undefined,
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dir: vertex.dir,
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type: vertex.type,
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props: vertex.props,
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padding: getConfig().flowchart.padding,
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};
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let boundingBox;
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let nodeEl;
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// Add the element to the DOM
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if (node.type !== 'group') {
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nodeEl = await insertNode(nodes, node, vertex.dir);
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boundingBox = nodeEl.node().getBBox();
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} else {
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const { shapeSvg, bbox } = await labelHelper(nodes, node, undefined, true);
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labelData.width = bbox.width;
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labelData.wrappingWidth = getConfig().flowchart.wrappingWidth;
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labelData.height = bbox.height;
|
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labelData.labelNode = shapeSvg.node();
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node.labelData = labelData;
|
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}
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// const { shapeSvg, bbox } = await labelHelper(svg, node, undefined, true);
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|
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const data = {
|
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id: vertex.id,
|
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ports: vertex.type === 'diamond' ? ports : [],
|
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// labelStyle: styles.labelStyle,
|
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// shape: _shape,
|
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layoutOptions,
|
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labelText: vertexText,
|
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labelData,
|
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// labels: [{ text: vertexText }],
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// rx: radius,
|
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// ry: radius,
|
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// class: classStr,
|
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// style: styles.style,
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// link: vertex.link,
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// linkTarget: vertex.linkTarget,
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// tooltip: diagObj.db.getTooltip(vertex.id) || '',
|
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domId: diagObj.db.lookUpDomId(vertex.id),
|
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// haveCallback: vertex.haveCallback,
|
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width: boundingBox?.width,
|
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height: boundingBox?.height,
|
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// dir: vertex.dir,
|
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type: vertex.type,
|
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// props: vertex.props,
|
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// padding: getConfig().flowchart.padding,
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// boundingBox,
|
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el: nodeEl,
|
||||
parent: parentLookupDb.parentById[vertex.id],
|
||||
};
|
||||
// if (!Object.keys(parentLookupDb.childrenById).includes(vertex.id)) {
|
||||
// graph.children.push({
|
||||
// ...data,
|
||||
// });
|
||||
// }
|
||||
nodeDb[node.id] = data;
|
||||
// log.trace('setNode', {
|
||||
// labelStyle: styles.labelStyle,
|
||||
// shape: _shape,
|
||||
// labelText: vertexText,
|
||||
// rx: radius,
|
||||
// ry: radius,
|
||||
// class: classStr,
|
||||
// style: styles.style,
|
||||
// id: vertex.id,
|
||||
// domId: diagObj.db.lookUpDomId(vertex.id),
|
||||
// width: vertex.type === 'group' ? 500 : undefined,
|
||||
// type: vertex.type,
|
||||
// dir: vertex.dir,
|
||||
// props: vertex.props,
|
||||
// padding: getConfig().flowchart.padding,
|
||||
// parent: parentLookupDb.parentById[vertex.id],
|
||||
// });
|
||||
})
|
||||
);
|
||||
return graph;
|
||||
};
|
||||
|
||||
const getNextPosition = (position, edgeDirection, graphDirection) => {
|
||||
const portPos = {
|
||||
TB: {
|
||||
in: {
|
||||
north: 'north',
|
||||
},
|
||||
out: {
|
||||
south: 'west',
|
||||
west: 'east',
|
||||
east: 'south',
|
||||
},
|
||||
},
|
||||
LR: {
|
||||
in: {
|
||||
west: 'west',
|
||||
},
|
||||
out: {
|
||||
east: 'south',
|
||||
south: 'north',
|
||||
north: 'east',
|
||||
},
|
||||
},
|
||||
RL: {
|
||||
in: {
|
||||
east: 'east',
|
||||
},
|
||||
out: {
|
||||
west: 'north',
|
||||
north: 'south',
|
||||
south: 'west',
|
||||
},
|
||||
},
|
||||
BT: {
|
||||
in: {
|
||||
south: 'south',
|
||||
},
|
||||
out: {
|
||||
north: 'east',
|
||||
east: 'west',
|
||||
west: 'north',
|
||||
},
|
||||
},
|
||||
};
|
||||
portPos.TD = portPos.TB;
|
||||
return portPos[graphDirection][edgeDirection][position];
|
||||
// return 'south';
|
||||
};
|
||||
|
||||
const getNextPort = (node, edgeDirection, graphDirection) => {
|
||||
log.info('getNextPort', { node, edgeDirection, graphDirection });
|
||||
if (!portPos[node]) {
|
||||
switch (graphDirection) {
|
||||
case 'TB':
|
||||
case 'TD':
|
||||
portPos[node] = {
|
||||
inPosition: 'north',
|
||||
outPosition: 'south',
|
||||
};
|
||||
break;
|
||||
case 'BT':
|
||||
portPos[node] = {
|
||||
inPosition: 'south',
|
||||
outPosition: 'north',
|
||||
};
|
||||
break;
|
||||
case 'RL':
|
||||
portPos[node] = {
|
||||
inPosition: 'east',
|
||||
outPosition: 'west',
|
||||
};
|
||||
break;
|
||||
case 'LR':
|
||||
portPos[node] = {
|
||||
inPosition: 'west',
|
||||
outPosition: 'east',
|
||||
};
|
||||
break;
|
||||
}
|
||||
}
|
||||
const result = edgeDirection === 'in' ? portPos[node].inPosition : portPos[node].outPosition;
|
||||
|
||||
if (edgeDirection === 'in') {
|
||||
portPos[node].inPosition = getNextPosition(
|
||||
portPos[node].inPosition,
|
||||
edgeDirection,
|
||||
graphDirection
|
||||
);
|
||||
} else {
|
||||
portPos[node].outPosition = getNextPosition(
|
||||
portPos[node].outPosition,
|
||||
edgeDirection,
|
||||
graphDirection
|
||||
);
|
||||
}
|
||||
return result;
|
||||
};
|
||||
|
||||
const getEdgeStartEndPoint = (edge, dir) => {
|
||||
let source = edge.start;
|
||||
let target = edge.end;
|
||||
|
||||
// Save the original source and target
|
||||
const sourceId = source;
|
||||
const targetId = target;
|
||||
|
||||
const startNode = nodeDb[source];
|
||||
const endNode = nodeDb[target];
|
||||
|
||||
if (!startNode || !endNode) {
|
||||
return { source, target };
|
||||
}
|
||||
|
||||
if (startNode.type === 'diamond') {
|
||||
source = `${source}-${getNextPort(source, 'out', dir)}`;
|
||||
}
|
||||
|
||||
if (endNode.type === 'diamond') {
|
||||
target = `${target}-${getNextPort(target, 'in', dir)}`;
|
||||
}
|
||||
|
||||
// Add the edge to the graph
|
||||
return { source, target, sourceId, targetId };
|
||||
};
|
||||
|
||||
/**
|
||||
* Add edges to graph based on parsed graph definition
|
||||
*
|
||||
* @param {object} edges The edges to add to the graph
|
||||
* @param {object} g The graph object
|
||||
* @param cy
|
||||
* @param diagObj
|
||||
* @param graph
|
||||
* @param svg
|
||||
*/
|
||||
export const addEdges = function (edges, diagObj, graph, svg) {
|
||||
log.info('abc78 edges = ', edges);
|
||||
const labelsEl = svg.insert('g').attr('class', 'edgeLabels');
|
||||
let linkIdCnt = {};
|
||||
let dir = diagObj.db.getDirection();
|
||||
let defaultStyle;
|
||||
let defaultLabelStyle;
|
||||
|
||||
if (edges.defaultStyle !== undefined) {
|
||||
const defaultStyles = getStylesFromArray(edges.defaultStyle);
|
||||
defaultStyle = defaultStyles.style;
|
||||
defaultLabelStyle = defaultStyles.labelStyle;
|
||||
}
|
||||
|
||||
edges.forEach(function (edge) {
|
||||
// Identify Link
|
||||
const linkIdBase = 'L-' + edge.start + '-' + edge.end;
|
||||
// count the links from+to the same node to give unique id
|
||||
if (linkIdCnt[linkIdBase] === undefined) {
|
||||
linkIdCnt[linkIdBase] = 0;
|
||||
log.info('abc78 new entry', linkIdBase, linkIdCnt[linkIdBase]);
|
||||
} else {
|
||||
linkIdCnt[linkIdBase]++;
|
||||
log.info('abc78 new entry', linkIdBase, linkIdCnt[linkIdBase]);
|
||||
}
|
||||
let linkId = linkIdBase + '-' + linkIdCnt[linkIdBase];
|
||||
log.info('abc78 new link id to be used is', linkIdBase, linkId, linkIdCnt[linkIdBase]);
|
||||
const linkNameStart = 'LS-' + edge.start;
|
||||
const linkNameEnd = 'LE-' + edge.end;
|
||||
|
||||
const edgeData = { style: '', labelStyle: '' };
|
||||
edgeData.minlen = edge.length || 1;
|
||||
//edgeData.id = 'id' + cnt;
|
||||
|
||||
// Set link type for rendering
|
||||
if (edge.type === 'arrow_open') {
|
||||
edgeData.arrowhead = 'none';
|
||||
} else {
|
||||
edgeData.arrowhead = 'normal';
|
||||
}
|
||||
|
||||
// Check of arrow types, placed here in order not to break old rendering
|
||||
edgeData.arrowTypeStart = 'arrow_open';
|
||||
edgeData.arrowTypeEnd = 'arrow_open';
|
||||
|
||||
/* eslint-disable no-fallthrough */
|
||||
switch (edge.type) {
|
||||
case 'double_arrow_cross':
|
||||
edgeData.arrowTypeStart = 'arrow_cross';
|
||||
case 'arrow_cross':
|
||||
edgeData.arrowTypeEnd = 'arrow_cross';
|
||||
break;
|
||||
case 'double_arrow_point':
|
||||
edgeData.arrowTypeStart = 'arrow_point';
|
||||
case 'arrow_point':
|
||||
edgeData.arrowTypeEnd = 'arrow_point';
|
||||
break;
|
||||
case 'double_arrow_circle':
|
||||
edgeData.arrowTypeStart = 'arrow_circle';
|
||||
case 'arrow_circle':
|
||||
edgeData.arrowTypeEnd = 'arrow_circle';
|
||||
break;
|
||||
}
|
||||
|
||||
let style = '';
|
||||
let labelStyle = '';
|
||||
|
||||
switch (edge.stroke) {
|
||||
case 'normal':
|
||||
style = 'fill:none;';
|
||||
if (defaultStyle !== undefined) {
|
||||
style = defaultStyle;
|
||||
}
|
||||
if (defaultLabelStyle !== undefined) {
|
||||
labelStyle = defaultLabelStyle;
|
||||
}
|
||||
edgeData.thickness = 'normal';
|
||||
edgeData.pattern = 'solid';
|
||||
break;
|
||||
case 'dotted':
|
||||
edgeData.thickness = 'normal';
|
||||
edgeData.pattern = 'dotted';
|
||||
edgeData.style = 'fill:none;stroke-width:2px;stroke-dasharray:3;';
|
||||
break;
|
||||
case 'thick':
|
||||
edgeData.thickness = 'thick';
|
||||
edgeData.pattern = 'solid';
|
||||
edgeData.style = 'stroke-width: 3.5px;fill:none;';
|
||||
break;
|
||||
}
|
||||
if (edge.style !== undefined) {
|
||||
const styles = getStylesFromArray(edge.style);
|
||||
style = styles.style;
|
||||
labelStyle = styles.labelStyle;
|
||||
}
|
||||
|
||||
edgeData.style = edgeData.style += style;
|
||||
edgeData.labelStyle = edgeData.labelStyle += labelStyle;
|
||||
|
||||
if (edge.interpolate !== undefined) {
|
||||
edgeData.curve = interpolateToCurve(edge.interpolate, curveLinear);
|
||||
} else if (edges.defaultInterpolate !== undefined) {
|
||||
edgeData.curve = interpolateToCurve(edges.defaultInterpolate, curveLinear);
|
||||
} else {
|
||||
edgeData.curve = interpolateToCurve(conf.curve, curveLinear);
|
||||
}
|
||||
|
||||
if (edge.text === undefined) {
|
||||
if (edge.style !== undefined) {
|
||||
edgeData.arrowheadStyle = 'fill: #333';
|
||||
}
|
||||
} else {
|
||||
edgeData.arrowheadStyle = 'fill: #333';
|
||||
edgeData.labelpos = 'c';
|
||||
}
|
||||
|
||||
edgeData.labelType = edge.labelType;
|
||||
edgeData.label = edge.text.replace(common.lineBreakRegex, '\n');
|
||||
|
||||
if (edge.style === undefined) {
|
||||
edgeData.style = edgeData.style || 'stroke: #333; stroke-width: 1.5px;fill:none;';
|
||||
}
|
||||
|
||||
edgeData.labelStyle = edgeData.labelStyle.replace('color:', 'fill:');
|
||||
|
||||
edgeData.id = linkId;
|
||||
edgeData.classes = 'flowchart-link ' + linkNameStart + ' ' + linkNameEnd;
|
||||
|
||||
const labelEl = insertEdgeLabel(labelsEl, edgeData);
|
||||
|
||||
// calculate start and end points of the edge, note that the source and target
|
||||
// can be modified for shapes that have ports
|
||||
const { source, target, sourceId, targetId } = getEdgeStartEndPoint(edge, dir);
|
||||
log.debug('abc78 source and target', source, target);
|
||||
// Add the edge to the graph
|
||||
graph.edges.push({
|
||||
id: 'e' + edge.start + edge.end,
|
||||
sources: [source],
|
||||
targets: [target],
|
||||
sourceId,
|
||||
targetId,
|
||||
labelEl: labelEl,
|
||||
labels: [
|
||||
{
|
||||
width: edgeData.width,
|
||||
height: edgeData.height,
|
||||
orgWidth: edgeData.width,
|
||||
orgHeight: edgeData.height,
|
||||
text: edgeData.label,
|
||||
layoutOptions: {
|
||||
'edgeLabels.inline': 'true',
|
||||
'edgeLabels.placement': 'CENTER',
|
||||
},
|
||||
},
|
||||
],
|
||||
edgeData,
|
||||
});
|
||||
});
|
||||
return graph;
|
||||
};
|
||||
|
||||
// TODO: break out and share with dagre wrapper. The current code in dagre wrapper also adds
|
||||
// adds the line to the graph, but we don't need that here. This is why we can't use the dagre
|
||||
// wrapper directly for this
|
||||
/**
|
||||
* Add the markers to the edge depending on the type of arrow is
|
||||
* @param svgPath
|
||||
* @param edgeData
|
||||
* @param diagramType
|
||||
* @param arrowMarkerAbsolute
|
||||
* @param id
|
||||
*/
|
||||
const addMarkersToEdge = function (svgPath, edgeData, diagramType, arrowMarkerAbsolute, id) {
|
||||
let url = '';
|
||||
// Check configuration for absolute path
|
||||
if (arrowMarkerAbsolute) {
|
||||
url =
|
||||
window.location.protocol +
|
||||
'//' +
|
||||
window.location.host +
|
||||
window.location.pathname +
|
||||
window.location.search;
|
||||
url = url.replace(/\(/g, '\\(');
|
||||
url = url.replace(/\)/g, '\\)');
|
||||
}
|
||||
|
||||
// look in edge data and decide which marker to use
|
||||
addEdgeMarkers(svgPath, edgeData, url, id, diagramType);
|
||||
};
|
||||
|
||||
/**
|
||||
* Returns the all the styles from classDef statements in the graph definition.
|
||||
*
|
||||
* @param text
|
||||
* @param diagObj
|
||||
* @returns {Map<string, import('../../mermaid/src/diagram-api/types.js').DiagramStyleClassDef>} ClassDef styles
|
||||
*/
|
||||
export const getClasses = function (text, diagObj) {
|
||||
log.info('Extracting classes');
|
||||
return diagObj.db.getClasses();
|
||||
};
|
||||
|
||||
const addSubGraphs = function (db) {
|
||||
const parentLookupDb = { parentById: {}, childrenById: {} };
|
||||
const subgraphs = db.getSubGraphs();
|
||||
log.info('Subgraphs - ', subgraphs);
|
||||
subgraphs.forEach(function (subgraph) {
|
||||
subgraph.nodes.forEach(function (node) {
|
||||
parentLookupDb.parentById[node] = subgraph.id;
|
||||
if (parentLookupDb.childrenById[subgraph.id] === undefined) {
|
||||
parentLookupDb.childrenById[subgraph.id] = [];
|
||||
}
|
||||
parentLookupDb.childrenById[subgraph.id].push(node);
|
||||
});
|
||||
});
|
||||
|
||||
subgraphs.forEach(function (subgraph) {
|
||||
const data = { id: subgraph.id };
|
||||
if (parentLookupDb.parentById[subgraph.id] !== undefined) {
|
||||
data.parent = parentLookupDb.parentById[subgraph.id];
|
||||
}
|
||||
});
|
||||
return parentLookupDb;
|
||||
};
|
||||
|
||||
const calcOffset = function (src, dest, parentLookupDb) {
|
||||
const ancestor = findCommonAncestor(src, dest, parentLookupDb);
|
||||
if (ancestor === undefined || ancestor === 'root') {
|
||||
return { x: 0, y: 0 };
|
||||
}
|
||||
|
||||
const ancestorOffset = nodeDb[ancestor].offset;
|
||||
return { x: ancestorOffset.posX, y: ancestorOffset.posY };
|
||||
};
|
||||
|
||||
const insertEdge = function (edgesEl, edge, edgeData, diagObj, parentLookupDb, id) {
|
||||
const offset = calcOffset(edge.sourceId, edge.targetId, parentLookupDb);
|
||||
|
||||
const src = edge.sections[0].startPoint;
|
||||
const dest = edge.sections[0].endPoint;
|
||||
const segments = edge.sections[0].bendPoints ? edge.sections[0].bendPoints : [];
|
||||
|
||||
const segPoints = segments.map((segment) => [segment.x + offset.x, segment.y + offset.y]);
|
||||
const points = [
|
||||
[src.x + offset.x, src.y + offset.y],
|
||||
...segPoints,
|
||||
[dest.x + offset.x, dest.y + offset.y],
|
||||
];
|
||||
|
||||
const { x, y } = getLineFunctionsWithOffset(edge.edgeData);
|
||||
const curve = line().x(x).y(y).curve(curveLinear);
|
||||
const edgePath = edgesEl
|
||||
.insert('path')
|
||||
.attr('d', curve(points))
|
||||
.attr('class', 'path ' + edgeData.classes)
|
||||
.attr('fill', 'none');
|
||||
Object.entries(edgeData).forEach(([key, value]) => {
|
||||
if (key !== 'classes') {
|
||||
edgePath.attr(key, value);
|
||||
}
|
||||
});
|
||||
const edgeG = edgesEl.insert('g').attr('class', 'edgeLabel');
|
||||
const edgeWithLabel = select(edgeG.node().appendChild(edge.labelEl));
|
||||
const box = edgeWithLabel.node().firstChild.getBoundingClientRect();
|
||||
edgeWithLabel.attr('width', box.width);
|
||||
edgeWithLabel.attr('height', box.height);
|
||||
|
||||
edgeG.attr(
|
||||
'transform',
|
||||
`translate(${edge.labels[0].x + offset.x}, ${edge.labels[0].y + offset.y})`
|
||||
);
|
||||
addMarkersToEdge(edgePath, edgeData, diagObj.type, diagObj.arrowMarkerAbsolute, id);
|
||||
};
|
||||
|
||||
/**
|
||||
* Recursive function that iterates over an array of nodes and inserts the children of each node.
|
||||
* It also recursively populates the inserts the children of the children and so on.
|
||||
* @param nodeArray
|
||||
* @param parentLookupDb
|
||||
*/
|
||||
const insertChildren = (nodeArray, parentLookupDb) => {
|
||||
nodeArray.forEach((node) => {
|
||||
// Check if we have reached the end of the tree
|
||||
if (!node.children) {
|
||||
node.children = [];
|
||||
}
|
||||
// Check if the node has children
|
||||
const childIds = parentLookupDb.childrenById[node.id];
|
||||
// If the node has children, add them to the node
|
||||
if (childIds) {
|
||||
childIds.forEach((childId) => {
|
||||
node.children.push(nodeDb[childId]);
|
||||
});
|
||||
}
|
||||
// Recursive call
|
||||
insertChildren(node.children, parentLookupDb);
|
||||
});
|
||||
};
|
||||
|
||||
/**
|
||||
* Draws a flowchart in the tag with id: id based on the graph definition in text.
|
||||
*
|
||||
* @param text
|
||||
* @param id
|
||||
*/
|
||||
|
||||
export const draw = async function (text, id, _version, diagObj) {
|
||||
const { securityLevel, flowchart: conf } = getConfig();
|
||||
nodeDb = {};
|
||||
portPos = {};
|
||||
const renderEl = select('body').append('div').attr('style', 'height:400px').attr('id', 'cy');
|
||||
let graph = {
|
||||
id: 'root',
|
||||
layoutOptions: {
|
||||
'elk.hierarchyHandling': 'INCLUDE_CHILDREN',
|
||||
'elk.layered.spacing.edgeNodeBetweenLayers': conf?.nodeSpacing ? `${conf.nodeSpacing}` : '30',
|
||||
// 'elk.layered.mergeEdges': 'true',
|
||||
'elk.direction': 'DOWN',
|
||||
// 'elk.ports.sameLayerEdges': true,
|
||||
// 'nodePlacement.strategy': 'SIMPLE',
|
||||
},
|
||||
children: [],
|
||||
edges: [],
|
||||
};
|
||||
log.info('Drawing flowchart using v3 renderer', elk);
|
||||
|
||||
// Set the direction,
|
||||
// Fetch the default direction, use TD if none was found
|
||||
let dir = diagObj.db.getDirection();
|
||||
switch (dir) {
|
||||
case 'BT':
|
||||
graph.layoutOptions['elk.direction'] = 'UP';
|
||||
break;
|
||||
case 'TB':
|
||||
graph.layoutOptions['elk.direction'] = 'DOWN';
|
||||
break;
|
||||
case 'LR':
|
||||
graph.layoutOptions['elk.direction'] = 'RIGHT';
|
||||
break;
|
||||
case 'RL':
|
||||
graph.layoutOptions['elk.direction'] = 'LEFT';
|
||||
break;
|
||||
}
|
||||
|
||||
// Find the root dom node to ne used in rendering
|
||||
// Handle root and document for when rendering in sandbox mode
|
||||
let sandboxElement;
|
||||
if (securityLevel === 'sandbox') {
|
||||
sandboxElement = select('#i' + id);
|
||||
}
|
||||
const root =
|
||||
securityLevel === 'sandbox'
|
||||
? select(sandboxElement.nodes()[0].contentDocument.body)
|
||||
: select('body');
|
||||
const doc = securityLevel === 'sandbox' ? sandboxElement.nodes()[0].contentDocument : document;
|
||||
|
||||
const svg = root.select(`[id="${id}"]`);
|
||||
// Define the supported markers for the diagram
|
||||
const markers = ['point', 'circle', 'cross'];
|
||||
|
||||
// Add the marker definitions to the svg as marker tags
|
||||
insertMarkers(svg, markers, diagObj.type, id);
|
||||
|
||||
// Fetch the vertices/nodes and edges/links from the parsed graph definition
|
||||
const vert = diagObj.db.getVertices();
|
||||
|
||||
// Setup nodes from the subgraphs with type group, these will be used
|
||||
// as nodes with children in the subgraph
|
||||
let subG;
|
||||
const subGraphs = diagObj.db.getSubGraphs();
|
||||
log.info('Subgraphs - ', subGraphs);
|
||||
for (let i = subGraphs.length - 1; i >= 0; i--) {
|
||||
subG = subGraphs[i];
|
||||
diagObj.db.addVertex(
|
||||
subG.id,
|
||||
{ text: subG.title, type: subG.labelType },
|
||||
'group',
|
||||
undefined,
|
||||
subG.classes,
|
||||
subG.dir
|
||||
);
|
||||
}
|
||||
|
||||
// debugger;
|
||||
// Add an element in the svg to be used to hold the subgraphs container
|
||||
// elements
|
||||
const subGraphsEl = svg.insert('g').attr('class', 'subgraphs');
|
||||
|
||||
// Create the lookup db for the subgraphs and their children to used when creating
|
||||
// the tree structured graph
|
||||
const parentLookupDb = addSubGraphs(diagObj.db);
|
||||
|
||||
// Add the nodes to the graph, this will entail creating the actual nodes
|
||||
// in order to get the size of the node. You can't get the size of a node
|
||||
// that is not in the dom so we need to add it to the dom, get the size
|
||||
// we will position the nodes when we get the layout from elkjs
|
||||
graph = await addVertices(vert, id, root, doc, diagObj, parentLookupDb, graph);
|
||||
|
||||
// Time for the edges, we start with adding an element in the node to hold the edges
|
||||
const edgesEl = svg.insert('g').attr('class', 'edges edgePath');
|
||||
// Fetch the edges form the parsed graph definition
|
||||
const edges = diagObj.db.getEdges();
|
||||
|
||||
// Add the edges to the graph, this will entail creating the actual edges
|
||||
graph = addEdges(edges, diagObj, graph, svg);
|
||||
|
||||
// Iterate through all nodes and add the top level nodes to the graph
|
||||
const nodes = Object.keys(nodeDb);
|
||||
nodes.forEach((nodeId) => {
|
||||
const node = nodeDb[nodeId];
|
||||
if (!node.parent) {
|
||||
graph.children.push(node);
|
||||
}
|
||||
// Subgraph
|
||||
if (parentLookupDb.childrenById[nodeId] !== undefined) {
|
||||
node.labels = [
|
||||
{
|
||||
text: node.labelText,
|
||||
layoutOptions: {
|
||||
'nodeLabels.placement': '[H_CENTER, V_TOP, INSIDE]',
|
||||
},
|
||||
width: node.labelData.width,
|
||||
height: node.labelData.height,
|
||||
// width: 100,
|
||||
// height: 100,
|
||||
},
|
||||
];
|
||||
delete node.x;
|
||||
delete node.y;
|
||||
delete node.width;
|
||||
delete node.height;
|
||||
}
|
||||
});
|
||||
|
||||
insertChildren(graph.children, parentLookupDb);
|
||||
log.info('after layout', JSON.stringify(graph, null, 2));
|
||||
const g = await elk.layout(graph);
|
||||
drawNodes(0, 0, g.children, svg, subGraphsEl, diagObj, 0);
|
||||
utils.insertTitle(svg, 'flowchartTitleText', conf.titleTopMargin, diagObj.db.getDiagramTitle());
|
||||
log.info('after layout', g);
|
||||
g.edges?.map((edge) => {
|
||||
insertEdge(edgesEl, edge, edge.edgeData, diagObj, parentLookupDb, id);
|
||||
});
|
||||
setupGraphViewbox({}, svg, conf.diagramPadding, conf.useMaxWidth);
|
||||
// Remove element after layout
|
||||
renderEl.remove();
|
||||
};
|
||||
|
||||
const drawNodes = (relX, relY, nodeArray, svg, subgraphsEl, diagObj, depth) => {
|
||||
nodeArray.forEach(function (node) {
|
||||
if (node) {
|
||||
nodeDb[node.id].offset = {
|
||||
posX: node.x + relX,
|
||||
posY: node.y + relY,
|
||||
x: relX,
|
||||
y: relY,
|
||||
depth,
|
||||
width: node.width,
|
||||
height: node.height,
|
||||
};
|
||||
if (node.type === 'group') {
|
||||
const subgraphEl = subgraphsEl.insert('g').attr('class', 'subgraph');
|
||||
subgraphEl
|
||||
.insert('rect')
|
||||
.attr('class', 'subgraph subgraph-lvl-' + (depth % 5) + ' node')
|
||||
.attr('x', node.x + relX)
|
||||
.attr('y', node.y + relY)
|
||||
.attr('width', node.width)
|
||||
.attr('height', node.height);
|
||||
const label = subgraphEl.insert('g').attr('class', 'label');
|
||||
const labelCentering = getConfig().flowchart.htmlLabels ? node.labelData.width / 2 : 0;
|
||||
label.attr(
|
||||
'transform',
|
||||
`translate(${node.labels[0].x + relX + node.x + labelCentering}, ${
|
||||
node.labels[0].y + relY + node.y + 3
|
||||
})`
|
||||
);
|
||||
label.node().appendChild(node.labelData.labelNode);
|
||||
|
||||
log.info('Id (UGH)= ', node.type, node.labels);
|
||||
} else {
|
||||
log.info('Id (UGH)= ', node.id);
|
||||
node.el.attr(
|
||||
'transform',
|
||||
`translate(${node.x + relX + node.width / 2}, ${node.y + relY + node.height / 2})`
|
||||
);
|
||||
}
|
||||
}
|
||||
});
|
||||
nodeArray.forEach(function (node) {
|
||||
if (node && node.type === 'group') {
|
||||
drawNodes(relX + node.x, relY + node.y, node.children, svg, subgraphsEl, diagObj, depth + 1);
|
||||
}
|
||||
});
|
||||
};
|
||||
|
||||
export default {
|
||||
getClasses,
|
||||
draw,
|
||||
};
|
||||
@ -1,41 +0,0 @@
|
||||
import type { TreeData } from './render-utils.js';
|
||||
import { findCommonAncestor } from './render-utils.js';
|
||||
describe('when rendering a flowchart using elk ', () => {
|
||||
let lookupDb: TreeData;
|
||||
beforeEach(() => {
|
||||
lookupDb = {
|
||||
parentById: {
|
||||
B4: 'inner',
|
||||
B5: 'inner',
|
||||
C4: 'inner2',
|
||||
C5: 'inner2',
|
||||
B2: 'Ugge',
|
||||
B3: 'Ugge',
|
||||
inner: 'Ugge',
|
||||
inner2: 'Ugge',
|
||||
B6: 'outer',
|
||||
},
|
||||
childrenById: {
|
||||
inner: ['B4', 'B5'],
|
||||
inner2: ['C4', 'C5'],
|
||||
Ugge: ['B2', 'B3', 'inner', 'inner2'],
|
||||
outer: ['B6'],
|
||||
},
|
||||
};
|
||||
});
|
||||
it('to find parent of siblings in a subgraph', () => {
|
||||
expect(findCommonAncestor('B4', 'B5', lookupDb)).toBe('inner');
|
||||
});
|
||||
it('to find an uncle', () => {
|
||||
expect(findCommonAncestor('B4', 'B2', lookupDb)).toBe('Ugge');
|
||||
});
|
||||
it('to find a cousin', () => {
|
||||
expect(findCommonAncestor('B4', 'C4', lookupDb)).toBe('Ugge');
|
||||
});
|
||||
it('to find a grandparent', () => {
|
||||
expect(findCommonAncestor('B4', 'B6', lookupDb)).toBe('root');
|
||||
});
|
||||
it('to find ancestor of siblings in the root', () => {
|
||||
expect(findCommonAncestor('B1', 'outer', lookupDb)).toBe('root');
|
||||
});
|
||||
});
|
||||
@ -1,25 +0,0 @@
|
||||
export interface TreeData {
|
||||
parentById: Record<string, string>;
|
||||
childrenById: Record<string, string[]>;
|
||||
}
|
||||
|
||||
export const findCommonAncestor = (id1: string, id2: string, treeData: TreeData) => {
|
||||
const { parentById } = treeData;
|
||||
const visited = new Set();
|
||||
let currentId = id1;
|
||||
while (currentId) {
|
||||
visited.add(currentId);
|
||||
if (currentId === id2) {
|
||||
return currentId;
|
||||
}
|
||||
currentId = parentById[currentId];
|
||||
}
|
||||
currentId = id2;
|
||||
while (currentId) {
|
||||
if (visited.has(currentId)) {
|
||||
return currentId;
|
||||
}
|
||||
currentId = parentById[currentId];
|
||||
}
|
||||
return 'root';
|
||||
};
|
||||
@ -1,143 +0,0 @@
|
||||
/** Returns the styles given options */
|
||||
export interface FlowChartStyleOptions {
|
||||
arrowheadColor: string;
|
||||
border2: string;
|
||||
clusterBkg: string;
|
||||
clusterBorder: string;
|
||||
edgeLabelBackground: string;
|
||||
fontFamily: string;
|
||||
lineColor: string;
|
||||
mainBkg: string;
|
||||
nodeBorder: string;
|
||||
nodeTextColor: string;
|
||||
tertiaryColor: string;
|
||||
textColor: string;
|
||||
titleColor: string;
|
||||
[key: string]: string;
|
||||
}
|
||||
|
||||
const genSections = (options: FlowChartStyleOptions) => {
|
||||
let sections = '';
|
||||
|
||||
for (let i = 0; i < 5; i++) {
|
||||
sections += `
|
||||
.subgraph-lvl-${i} {
|
||||
fill: ${options[`surface${i}`]};
|
||||
stroke: ${options[`surfacePeer${i}`]};
|
||||
}
|
||||
`;
|
||||
}
|
||||
return sections;
|
||||
};
|
||||
|
||||
const getStyles = (options: FlowChartStyleOptions) =>
|
||||
`.label {
|
||||
font-family: ${options.fontFamily};
|
||||
color: ${options.nodeTextColor || options.textColor};
|
||||
}
|
||||
.cluster-label text {
|
||||
fill: ${options.titleColor};
|
||||
}
|
||||
.cluster-label span {
|
||||
color: ${options.titleColor};
|
||||
}
|
||||
|
||||
.label text,span {
|
||||
fill: ${options.nodeTextColor || options.textColor};
|
||||
color: ${options.nodeTextColor || options.textColor};
|
||||
}
|
||||
|
||||
.node rect,
|
||||
.node circle,
|
||||
.node ellipse,
|
||||
.node polygon,
|
||||
.node path {
|
||||
fill: ${options.mainBkg};
|
||||
stroke: ${options.nodeBorder};
|
||||
stroke-width: 1px;
|
||||
}
|
||||
|
||||
.node .label {
|
||||
text-align: center;
|
||||
}
|
||||
.node.clickable {
|
||||
cursor: pointer;
|
||||
}
|
||||
|
||||
.arrowheadPath {
|
||||
fill: ${options.arrowheadColor};
|
||||
}
|
||||
|
||||
.edgePath .path {
|
||||
stroke: ${options.lineColor};
|
||||
stroke-width: 2.0px;
|
||||
}
|
||||
|
||||
.flowchart-link {
|
||||
stroke: ${options.lineColor};
|
||||
fill: none;
|
||||
}
|
||||
|
||||
.edgeLabel {
|
||||
background-color: ${options.edgeLabelBackground};
|
||||
rect {
|
||||
opacity: 0.85;
|
||||
background-color: ${options.edgeLabelBackground};
|
||||
fill: ${options.edgeLabelBackground};
|
||||
}
|
||||
text-align: center;
|
||||
}
|
||||
|
||||
.cluster rect {
|
||||
fill: ${options.clusterBkg};
|
||||
stroke: ${options.clusterBorder};
|
||||
stroke-width: 1px;
|
||||
}
|
||||
|
||||
.cluster text {
|
||||
fill: ${options.titleColor};
|
||||
}
|
||||
|
||||
.cluster span {
|
||||
color: ${options.titleColor};
|
||||
}
|
||||
/* .cluster div {
|
||||
color: ${options.titleColor};
|
||||
} */
|
||||
|
||||
div.mermaidTooltip {
|
||||
position: absolute;
|
||||
text-align: center;
|
||||
max-width: 200px;
|
||||
padding: 2px;
|
||||
font-family: ${options.fontFamily};
|
||||
font-size: 12px;
|
||||
background: ${options.tertiaryColor};
|
||||
border: 1px solid ${options.border2};
|
||||
border-radius: 2px;
|
||||
pointer-events: none;
|
||||
z-index: 100;
|
||||
}
|
||||
|
||||
.flowchartTitleText {
|
||||
text-anchor: middle;
|
||||
font-size: 18px;
|
||||
fill: ${options.textColor};
|
||||
}
|
||||
.subgraph {
|
||||
stroke-width:2;
|
||||
rx:3;
|
||||
}
|
||||
// .subgraph-lvl-1 {
|
||||
// fill:#ccc;
|
||||
// // stroke:black;
|
||||
// }
|
||||
|
||||
.flowchart-label text {
|
||||
text-anchor: middle;
|
||||
}
|
||||
|
||||
${genSections(options)}
|
||||
`;
|
||||
|
||||
export default getStyles;
|
||||
@ -1,10 +0,0 @@
|
||||
{
|
||||
"extends": "../../tsconfig.json",
|
||||
"compilerOptions": {
|
||||
"rootDir": "../..",
|
||||
"outDir": "./dist",
|
||||
"types": ["vitest/importMeta", "vitest/globals"]
|
||||
},
|
||||
"include": ["./src/**/*.ts"],
|
||||
"typeRoots": ["./src/types"]
|
||||
}
|
||||
72
packages/mermaid-layout-elk/README.md
Normal file
72
packages/mermaid-layout-elk/README.md
Normal file
@ -0,0 +1,72 @@
|
||||
# @mermaid-js/layout-elk
|
||||
|
||||
This package provides a layout engine for Mermaid based on the [ELK](https://www.eclipse.org/elk/) layout engine.
|
||||
|
||||
> [!NOTE]
|
||||
> The ELK Layout engine will not be available in all providers that support mermaid by default.
|
||||
> The websites will have to install the `@mermaid-js/layout-elk` package to use the ELK layout engine.
|
||||
|
||||
## Usage
|
||||
|
||||
```
|
||||
flowchart-elk TD
|
||||
A --> B
|
||||
A --> C
|
||||
```
|
||||
|
||||
```
|
||||
---
|
||||
config:
|
||||
layout: elk
|
||||
---
|
||||
|
||||
flowchart TD
|
||||
A --> B
|
||||
A --> C
|
||||
```
|
||||
|
||||
```
|
||||
---
|
||||
config:
|
||||
layout: elk.stress
|
||||
---
|
||||
|
||||
flowchart TD
|
||||
A --> B
|
||||
A --> C
|
||||
```
|
||||
|
||||
### With bundlers
|
||||
|
||||
```sh
|
||||
npm install @mermaid-js/layout-elk
|
||||
```
|
||||
|
||||
```ts
|
||||
import mermaid from 'mermaid';
|
||||
import elkLayouts from '@mermaid-js/layout-elk';
|
||||
|
||||
mermaid.registerLayoutLoaders(elkLayouts);
|
||||
```
|
||||
|
||||
### With CDN
|
||||
|
||||
```html
|
||||
<script type="module">
|
||||
import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs';
|
||||
import elkLayouts from 'https://cdn.jsdelivr.net/npm/@mermaid-js/layout-elk@11/dist/mermaid-layout-elk.esm.min.mjs';
|
||||
|
||||
mermaid.registerLayoutLoaders(elkLayouts);
|
||||
</script>
|
||||
```
|
||||
|
||||
## Supported layouts
|
||||
|
||||
- `elk`: The default layout, which is `elk.layered`.
|
||||
- `elk.layered`: Layered layout
|
||||
- `elk.stress`: Stress layout
|
||||
- `elk.force`: Force layout
|
||||
- `elk.mrtree`: Multi-root tree layout
|
||||
- `elk.sporeOverlap`: Spore overlap layout
|
||||
|
||||
<!-- TODO: Add images for these layouts, as GitHub doesn't support natively -->
|
||||
@ -3,7 +3,7 @@ import type { LayoutLoaderDefinition } from 'mermaid';
|
||||
const loader = async () => await import(`./render.js`);
|
||||
const algos = ['elk.stress', 'elk.force', 'elk.mrtree', 'elk.sporeOverlap'];
|
||||
|
||||
export const layouts: LayoutLoaderDefinition[] = [
|
||||
const layouts: LayoutLoaderDefinition[] = [
|
||||
{
|
||||
name: 'elk',
|
||||
loader,
|
||||
@ -15,3 +15,5 @@ export const layouts: LayoutLoaderDefinition[] = [
|
||||
algorithm: algo,
|
||||
})),
|
||||
];
|
||||
|
||||
export default layouts;
|
||||
|
||||
@ -1,34 +1,26 @@
|
||||
import type {
|
||||
ExternalDiagramDefinition,
|
||||
DiagramDetector,
|
||||
DiagramLoader,
|
||||
ExternalDiagramDefinition,
|
||||
} from '../../../diagram-api/types.js';
|
||||
import { log } from '../../../logger.js';
|
||||
|
||||
const id = 'flowchart-elk';
|
||||
|
||||
const detector: DiagramDetector = (txt, config): boolean => {
|
||||
const detector: DiagramDetector = (txt, config = {}): boolean => {
|
||||
if (
|
||||
// If diagram explicitly states flowchart-elk
|
||||
/^\s*flowchart-elk/.test(txt) ||
|
||||
// If a flowchart/graph diagram has their default renderer set to elk
|
||||
(/^\s*flowchart|graph/.test(txt) && config?.flowchart?.defaultRenderer === 'elk')
|
||||
) {
|
||||
// This will log at the end, hopefully.
|
||||
setTimeout(
|
||||
() =>
|
||||
log.warn(
|
||||
'flowchart-elk was moved to an external package in Mermaid v11. Please refer [release notes](link) for more details. This diagram will be rendered using `dagre` layout as a fallback.'
|
||||
),
|
||||
500
|
||||
);
|
||||
config.layout = 'elk';
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
};
|
||||
|
||||
const loader: DiagramLoader = async () => {
|
||||
const { diagram } = await import('../flowDiagram-v2.js');
|
||||
const { diagram } = await import('../flowDiagram.js');
|
||||
return { id, diagram };
|
||||
};
|
||||
|
||||
|
||||
@ -1,5 +1,8 @@
|
||||
import type { DiagramDetector, DiagramLoader } from '../../diagram-api/types.js';
|
||||
import type { ExternalDiagramDefinition } from '../../diagram-api/types.js';
|
||||
import type {
|
||||
DiagramDetector,
|
||||
DiagramLoader,
|
||||
ExternalDiagramDefinition,
|
||||
} from '../../diagram-api/types.js';
|
||||
|
||||
const id = 'flowchart-v2';
|
||||
|
||||
@ -19,7 +22,7 @@ const detector: DiagramDetector = (txt, config) => {
|
||||
};
|
||||
|
||||
const loader: DiagramLoader = async () => {
|
||||
const { diagram } = await import('./flowDiagram-v2.js');
|
||||
const { diagram } = await import('./flowDiagram.js');
|
||||
return { id, diagram };
|
||||
};
|
||||
|
||||
|
||||
@ -1,23 +0,0 @@
|
||||
// @ts-ignore: JISON doesn't support types
|
||||
import flowParser from './parser/flow.jison';
|
||||
import flowDb from './flowDb.js';
|
||||
import renderer from './flowRenderer-v3-unified.js';
|
||||
import flowStyles from './styles.js';
|
||||
import type { MermaidConfig } from '../../config.type.js';
|
||||
import { setConfig } from '../../diagram-api/diagramAPI.js';
|
||||
|
||||
export const diagram = {
|
||||
parser: flowParser,
|
||||
db: flowDb,
|
||||
renderer,
|
||||
styles: flowStyles,
|
||||
init: (cnf: MermaidConfig) => {
|
||||
if (!cnf.flowchart) {
|
||||
cnf.flowchart = {};
|
||||
}
|
||||
cnf.flowchart.arrowMarkerAbsolute = cnf.arrowMarkerAbsolute;
|
||||
setConfig({ flowchart: { arrowMarkerAbsolute: cnf.arrowMarkerAbsolute } });
|
||||
flowDb.clear();
|
||||
flowDb.setGen('gen-2');
|
||||
},
|
||||
};
|
||||
@ -1,10 +1,10 @@
|
||||
// @ts-ignore: JISON doesn't support types
|
||||
import flowParser from './parser/flow.jison';
|
||||
import flowDb from './flowDb.js';
|
||||
import renderer from './flowRenderer-v3-unified.js';
|
||||
import flowStyles from './styles.js';
|
||||
import type { MermaidConfig } from '../../config.type.js';
|
||||
import { setConfig } from '../../diagram-api/diagramAPI.js';
|
||||
import flowDb from './flowDb.js';
|
||||
import renderer from './flowRenderer-v3-unified.js';
|
||||
// @ts-ignore: JISON doesn't support types
|
||||
import flowParser from './parser/flow.jison';
|
||||
import flowStyles from './styles.js';
|
||||
|
||||
export const diagram = {
|
||||
parser: flowParser,
|
||||
@ -15,6 +15,9 @@ export const diagram = {
|
||||
if (!cnf.flowchart) {
|
||||
cnf.flowchart = {};
|
||||
}
|
||||
if (cnf.layout) {
|
||||
setConfig({ layout: cnf.layout });
|
||||
}
|
||||
cnf.flowchart.arrowMarkerAbsolute = cnf.arrowMarkerAbsolute;
|
||||
setConfig({ flowchart: { arrowMarkerAbsolute: cnf.arrowMarkerAbsolute } });
|
||||
flowDb.clear();
|
||||
|
||||
@ -3,7 +3,7 @@ import { getConfig } from '../../diagram-api/diagramAPI.js';
|
||||
import type { DiagramStyleClassDef } from '../../diagram-api/types.js';
|
||||
import { log } from '../../logger.js';
|
||||
import { getDiagramElements } from '../../rendering-util/insertElementsForSize.js';
|
||||
import { render } from '../../rendering-util/render.js';
|
||||
import { getRegisteredLayoutAlgorithm, render } from '../../rendering-util/render.js';
|
||||
import { setupViewPortForSVG } from '../../rendering-util/setupViewPortForSVG.js';
|
||||
import type { LayoutData } from '../../rendering-util/types.js';
|
||||
import utils from '../../utils.js';
|
||||
@ -40,7 +40,12 @@ export const draw = async function (text: string, id: string, _version: string,
|
||||
const direction = getDirection();
|
||||
|
||||
data4Layout.type = diag.type;
|
||||
data4Layout.layoutAlgorithm = layout;
|
||||
data4Layout.layoutAlgorithm = getRegisteredLayoutAlgorithm(layout);
|
||||
if (data4Layout.layoutAlgorithm === 'dagre' && layout === 'elk') {
|
||||
log.warn(
|
||||
'flowchart-elk was moved to an external package in Mermaid v11. Please refer [release notes](https://github.com/mermaid-js/mermaid/releases/tag/v11.0.0) for more details. This diagram will be rendered using `dagre` layout as a fallback.'
|
||||
);
|
||||
}
|
||||
data4Layout.direction = direction;
|
||||
data4Layout.nodeSpacing = conf?.nodeSpacing || 50;
|
||||
data4Layout.rankSpacing = conf?.rankSpacing || 50;
|
||||
|
||||
@ -1,3 +1,5 @@
|
||||
import { log } from '$root/logger.js';
|
||||
|
||||
export interface LayoutAlgorithm {
|
||||
render(data4Layout: any, svg: any, element: any, algorithm?: string): any;
|
||||
}
|
||||
@ -24,10 +26,6 @@ const registerDefaultLayoutLoaders = () => {
|
||||
name: 'dagre',
|
||||
loader: async () => await import('./layout-algorithms/dagre/index.js'),
|
||||
},
|
||||
// {
|
||||
// name: 'elk',
|
||||
// loader: async () => await import('../../../mermaid-layout-elk/src/render.js'),
|
||||
// },
|
||||
]);
|
||||
};
|
||||
|
||||
@ -42,3 +40,17 @@ export const render = async (data4Layout: any, svg: any, element: any) => {
|
||||
const layoutRenderer = await layoutDefinition.loader();
|
||||
return layoutRenderer.render(data4Layout, svg, element, layoutDefinition.algorithm);
|
||||
};
|
||||
|
||||
/**
|
||||
* Get the registered layout algorithm. If the algorithm is not registered, use the fallback algorithm.
|
||||
*/
|
||||
export const getRegisteredLayoutAlgorithm = (algorithm = '', { fallback = 'dagre' } = {}) => {
|
||||
if (algorithm in layoutAlgorithms) {
|
||||
return algorithm;
|
||||
}
|
||||
if (fallback in layoutAlgorithms) {
|
||||
log.warn(`Layout algorithm ${algorithm} is not registered. Using ${fallback} as fallback.`);
|
||||
return fallback;
|
||||
}
|
||||
throw new Error(`Both layout algorithms ${algorithm} and ${fallback} are not registered.`);
|
||||
};
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user