2021-03-24 22:54:38 +00:00
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/**
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* Copyright (c) 2006-2013, JGraph Ltd
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2022-01-18 07:46:56 +00:00
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*
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* Graph Layout
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*
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* This example demonstrates using
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* automatic graph layouts and listening to changes of the graph size
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* to keep the container size in sync.
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2021-03-24 22:54:38 +00:00
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*/
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2021-03-23 12:31:35 +00:00
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import React from 'react';
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import mxEvent from '../mxgraph/util/mxEvent';
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import mxGraph from '../mxgraph/view/mxGraph';
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import mxRubberband from '../mxgraph/handler/mxRubberband';
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2021-03-25 03:59:23 +00:00
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import mxUtils from "../mxgraph/util/mxUtils";
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import mxCircleLayout from "../mxgraph/layout/mxCircleLayout";
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2021-03-23 12:31:35 +00:00
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2012-05-21 20:32:26 +00:00
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2022-01-18 07:46:56 +00:00
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const HTML_TEMPLATE = `
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2012-07-20 10:35:30 +00:00
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<!-- Page passes the container for the graph to the program -->
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2012-05-21 20:32:26 +00:00
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<body onload="main(document.getElementById('graphContainer'))">
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2021-03-24 22:54:38 +00:00
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<!-- Creates a container for the graph with a grid wallpaper. Make sure to define the position
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and overflow attributes! See comments on the adding of the size-listener on line 54 ff! -->
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<div id="graphContainer"
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style="position:relative;overflow:auto;width:821px;height:641px;background:url('editors/images/grid.gif');">
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</div>
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<br>
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<input type="checkbox" id="animate" checked="checked"/> Transitions
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2012-05-21 20:32:26 +00:00
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</body>
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2022-01-18 07:46:56 +00:00
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`
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// Creates the graph inside the given container
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let graph = new mxGraph(container);
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// Disables basic selection and cell handling
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graph.setEnabled(false);
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// Changes the default vertex style in-place
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let style = graph.getStylesheet().getDefaultVertexStyle();
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style.shape = mxConstants.SHAPE_ELLIPSE;
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style.perimiter = Perimeter.EllipsePerimeter;
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style.gradientColor = 'white';
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style.fontSize = '10';
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// Updates the size of the container to match
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// the size of the graph when it changes. If
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// this is commented-out, and the DIV style's
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// overflow is set to "auto", then scrollbars
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// will appear for the diagram. If overflow is
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// set to "visible", then the diagram will be
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// visible even when outside the parent DIV.
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// With the code below, the parent DIV will be
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// resized to contain the complete graph.
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//graph.setResizeContainer(true);
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// Larger grid size yields cleaner layout result
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graph.gridSize = 40;
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// Gets the default parent for inserting new cells. This
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// is normally the first child of the root (ie. layer 0).
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let parent = graph.getDefaultParent();
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// Creates a layout algorithm to be used
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// with the graph
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let layout = new MxFastOrganicLayout(graph);
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// Moves stuff wider apart than usual
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layout.forceConstant = 80;
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// Reference to the transition checkbox
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let animate = document.getElementById('animate');
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// Adds a button to execute the layout
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this.el2.insertBefore(mxUtils.button('Circle Layout',
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function(evt) {
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graph.getDataModel().beginUpdate();
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try {
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// Creates a layout algorithm to be used
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// with the graph
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let circleLayout = new mxCircleLayout(graph);
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circleLayout.execute(parent);
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} catch (e) {
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throw e;
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} finally {
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if (animate.checked) {
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let morph = new Morphing(graph);
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morph.addListener(mxEvent.DONE, function() {
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graph.getDataModel().endUpdate();
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});
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morph.startAnimation();
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} else {
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graph.getDataModel().endUpdate();
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}
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}
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}
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), document.body.firstChild);
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// Adds a button to execute the layout
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document.body.insertBefore(mxUtils.button('Organic Layout',
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function(evt)
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{
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graph.getDataModel().beginUpdate();
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try {
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layout.execute(parent);
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} catch (e) {
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throw e;
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} finally {
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if (animate.checked) {
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// Default values are 6, 1.5, 20
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let morph = new Morphing(graph, 10, 1.7, 20);
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morph.addListener(mxEvent.DONE, function() {
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graph.getDataModel().endUpdate();
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});
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morph.startAnimation();
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} else {
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graph.getDataModel().endUpdate();
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}
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}
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}
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), document.body.firstChild);
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// Adds cells to the model in a single step
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graph.getDataModel().beginUpdate();
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let w = 30;
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let h = 30;
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try {
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var v1 = graph.insertVertex(parent, null, 'A', 0, 0, w, h);
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var v2 = graph.insertVertex(parent, null, 'B', 0, 0, w, h);
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var v3 = graph.insertVertex(parent, null, 'C', 0, 0, w, h);
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var v4 = graph.insertVertex(parent, null, 'D', 0, 0, w, h);
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var v5 = graph.insertVertex(parent, null, 'E', 0, 0, w, h);
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var v6 = graph.insertVertex(parent, null, 'F', 0, 0, w, h);
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var v7 = graph.insertVertex(parent, null, 'G', 0, 0, w, h);
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var v8 = graph.insertVertex(parent, null, 'H', 0, 0, w, h);
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var e1 = graph.insertEdge(parent, null, 'ab', v1, v2);
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var e2 = graph.insertEdge(parent, null, 'ac', v1, v3);
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var e3 = graph.insertEdge(parent, null, 'cd', v3, v4);
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var e4 = graph.insertEdge(parent, null, 'be', v2, v5);
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var e5 = graph.insertEdge(parent, null, 'cf', v3, v6);
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var e6 = graph.insertEdge(parent, null, 'ag', v1, v7);
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var e7 = graph.insertEdge(parent, null, 'gh', v7, v8);
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var e8 = graph.insertEdge(parent, null, 'gc', v7, v3);
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var e9 = graph.insertEdge(parent, null, 'gd', v7, v4);
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var e10 = graph.insertEdge(parent, null, 'eh', v5, v8);
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// Executes the layout
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layout.execute(parent);
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} finally {
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// Updates the display
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graph.getDataModel().endUpdate();
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}
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