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Diagram

Adaptability

The Diagram can adapt its layout to narrow screens. In this demo, the component's Height property is set to 100% to fit a screen.

Note the following changes to the toolbox and properties panel:

  • The toolbox is docked to the left component border.
  • The properties panel is docked to the bottom component border.
  • A tool slides out of the screen when a user drags a shape from the toolbox or edits an item's text.
  • Only one tool can be displayed at a time.

You can switch between landscape and portrait layouts to see the Diagram's appearance and behavior on wide and narrow screens.

Backend API
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import React from 'react'; import Diagram from 'devextreme-react/diagram'; import 'whatwg-fetch'; class App extends React.Component { constructor(props) { super(props); this.diagramRef = React.createRef(); } componentDidMount() { var diagram = this.diagramRef.current.instance; fetch('../../../../data/diagram-flow.json') .then(function(response) { return response.json(); }) .then(function(json) { diagram.import(JSON.stringify(json)); }) .catch(function() { throw 'Data Loading Error'; }); } render() { return ( <Diagram id="diagram" ref={this.diagramRef} autoZoomMode="fitWidth" /> ); } } export default App;
import React from 'react'; import ReactDOM from 'react-dom'; import App from './App.js'; ReactDOM.render( <App />, document.getElementById('app') );
<!DOCTYPE html> <html> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.common.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx.light.css" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.5/css/dx-diagram.css" /> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" /> <link rel="stylesheet" type="text/css" href="styles.css" /> <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script> <script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script> <script type="text/javascript" src="config.js"></script> <script type="text/javascript"> System.import('./index.js'); </script> </head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body> </html>
.demo-container, #app, #diagram { height: 100%; }
window.config = { transpiler: 'plugin-babel', meta: { 'devextreme/localization.js': { "esModule": true }, }, paths: { 'npm:': 'https://unpkg.com/' }, defaultExtension: 'js', map: { 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types@15.7.2/prop-types.js', 'whatwg-fetch': 'npm:whatwg-fetch@2.0.4/fetch.js', 'rrule': 'npm:rrule@2.6.6/dist/es5/rrule.js', 'luxon': 'npm:luxon@1.28.0/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign@1.1.0', 'devextreme': 'npm:devextreme@21.1.6-build-21215-0313/cjs', 'devextreme-react': 'npm:devextreme-react@21.1.5', 'jszip': 'npm:jszip@3.7.0/dist/jszip.min.js', 'devextreme-quill': 'npm:devextreme-quill@1.3.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.1.25/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@3.0.4/dist/dx-gantt.js', '@devextreme/vdom': 'npm:@devextreme/vdom@1.2.2', 'inferno': 'npm:inferno@7.4.8/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat@7.4.8/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.8/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom@1.0.7/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate@7.4.8/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode@7.4.8/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class@7.4.8/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras@7.4.8/dist/inferno-extras.min.js', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js' }, packages: { 'devextreme': { defaultExtension: 'js' }, '@devextreme/vdom': { defaultExtension: 'js' }, 'devextreme-react': { main: 'index.js' }, 'devextreme/events/utils': { main: 'index' }, 'devextreme/events': { main: 'index' }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js' } }, packageConfigPaths: [ "npm:@devextreme/*/package.json", ], babelOptions: { sourceMaps: false, stage0: true, react: true } }; System.config(window.config);
{ "page": { "width": 8391, "height": 11907, "pageWidth": 8391, "pageHeight": 11906, "pageLandscape": false, "gridSize": 180, "snapToGrid": true }, "connectors": [{ "key": "116", "points": [{ "x": 2160, "y": 1800 }, { "x": 2160, "y": 2340 } ], "zIndex": 0, "beginItemKey": "107", "beginConnectionPointIndex": 2, "endItemKey": "108", "endConnectionPointIndex": 0 }, { "key": "117", "points": [{ "x": 2160, "y": 3420 }, { "x": 2160, "y": 3960 } ], "zIndex": 0, "beginItemKey": "108", "beginConnectionPointIndex": 2, "endItemKey": "118", "endConnectionPointIndex": 0 }, { "key": "122", "points": [{ "x": 3420, "y": 4680 }, { "x": 5760, "y": 4680 } ], "zIndex": 0, "texts": { "0.45": "No" }, "beginItemKey": "118", "beginConnectionPointIndex": 1, "endItemKey": "121", "endConnectionPointIndex": 3 }, { "key": "123", "points": [{ "x": 6840, "y": 4140 }, { "x": 3420, "y": 2880 } ], "zIndex": 0, "beginItemKey": "121", "beginConnectionPointIndex": 0, "endItemKey": "108", "endConnectionPointIndex": 1 }, { "key": "126", "points": [{ "x": 3780, "y": 9180 }, { "x": 2880, "y": 10440 } ], "zIndex": 0, "texts": { "0.78": "A popular scenario?" }, "beginItemKey": "120", "beginConnectionPointIndex": 3, "endItemKey": "125", "endConnectionPointIndex": 0 }, { "key": "130", "points": [{ "x": 5220, "y": 9180 }, { "x": 6120, "y": 10440 } ], "zIndex": 0, "texts": { "0.77": "Missing info in\nthe documentation?" }, "beginItemKey": "120", "beginConnectionPointIndex": 1, "endItemKey": "127", "endConnectionPointIndex": 0 }, { "key": "132", "points": [{ "x": 2160, "y": 5400 }, { "x": 2160, "y": 6120 } ], "zIndex": 0, "texts": { "0.47": "Yes" }, "beginItemKey": "118", "beginConnectionPointIndex": 2, "endItemKey": "131", "endConnectionPointIndex": 0 }, { "key": "124", "points": [{ "x": 2160, "y": 7200 }, { "x": 4500, "y": 8820 } ], "zIndex": 0, "beginItemKey": "131", "beginConnectionPointIndex": 2, "endItemKey": "120", "endConnectionPointIndex": 0 }, { "key": "134", "points": [{ "x": 3420, "y": 6660 }, { "x": 5760, "y": 6660 } ], "zIndex": 0, "texts": { "0.5": "Need developer\nassistance?" }, "beginItemKey": "131", "beginConnectionPointIndex": 1, "endItemKey": "133", "endConnectionPointIndex": 3 }, { "key": "135", "points": [{ "x": 6840, "y": 7200 }, { "x": 4500, "y": 8820 } ], "zIndex": 0, "beginItemKey": "133", "beginConnectionPointIndex": 2, "endItemKey": "120", "endConnectionPointIndex": 0 } ], "shapes": [ { "key": "107", "type": "terminator", "text": "A new ticket", "x": 1440, "y": 1080, "width": 1440, "height": 720, "zIndex": 0 }, { "key": "108", "type": "process", "text": "Analyze\nthe issue", "x": 900, "y": 2340, "width": 2520, "height": 1080, "zIndex": 0 }, { "key": "118", "type": "decision", "text": "Do we have all\ninformation to\nwork with?", "x": 900, "y": 3960, "width": 2520, "height": 1440, "zIndex": 0 }, { "key": "120", "type": "terminator", "text": "Answered", "x": 3780, "y": 8640, "width": 1440, "height": 720, "zIndex": 0 }, { "key": "121", "type": "process", "text": "Request additional\ninformation or clarify\nthe scenario", "x": 5760, "y": 4140, "width": 2160, "height": 1080, "zIndex": 0 }, { "key": "125", "type": "process", "text": "Prepare an example in\nCode Central", "x": 1620, "y": 10440, "width": 2520, "height": 1080, "zIndex": 0 }, { "key": "127", "type": "process", "text": "Update the\ndocumentation", "x": 4860, "y": 10440, "width": 2520, "height": 1080, "zIndex": 0 }, { "key": "131", "type": "process", "text": "Process the\nticket", "x": 900, "y": 6120, "width": 2520, "height": 1080, "zIndex": 0 }, { "key": "133", "type": "process", "text": "Work with the\nR&D team", "x": 5760, "y": 6120, "width": 2160, "height": 1080, "zIndex": 0 }, { "key": "136", "type": "text", "locked": true, "text": "Ticket Processing Flow", "x": 360, "y": 360, "width": 7740, "height": 360, "zIndex": 0, "styleText": { "font-size": "14pt", "font-weight": "bold" } } ] }