gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
75 lines (74 loc) • 4.1 kB
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Snap Link Reshaping</title>
<meta name="description" content="TypeScript: When reshaping an orthogonal link, make sure the points are moved onto a grid." />
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
<script src="../samples/assets/require.js"></script>
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
<script id="code">
function init() {
require(["SnapLinkReshapingScript"], function(app) {
app.init();
document.getElementById("SaveButton").onclick = app.save;
document.getElementById("LoadButton").onclick = app.load;
document.getElementById("AvoidsNodesCheckBox").onclick = app.toggleAvoidsNodes;
});
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div style="width: 100%; display: flex; justify-content: space-between">
<div id="myPaletteDiv" style="width: 105px; height: 620px; margin-right: 2px; background-color: whitesmoke; border: solid 1px black"></div>
<div id="myDiagramDiv" style="flex-grow: 1; height: 620px; border: solid 1px black"></div>
</div>
<label><input type="checkbox" id="AvoidsNodesCheckBox" checked="checked"/>avoidsNodes</label>
<p>
This sample is a simplified version of the <a href="../samples/draggableLink.html">Draggable Link</a> sample.
Links are not draggable, there are no custom <a>Adornment</a>s, nodes are not rotatable, and links
do not have text labels.
</p>
<p>
Its purpose is to demonstrate the <a href="SnapLinkReshapingTool.ts">SnapLinkReshapingTool</a>,
an extension of <a>LinkReshapingTool</a> that snaps each dragged reshape handle of selected Links to
the nearest grid point. If the <a>SnapLinkReshapingTool.avoidsNodes</a> option is true,
as it is by default, then the reshaping is limited to points where the adjacent segments would not
be crossing over any avoidable nodes.
</p>
<p>
Note how the "LinkReshaped" DiagramEvent listener changes the <a>Link.routing</a> of the reshaped Link,
so that it is no longer AvoidsNodes routing but simple Orthogonal routing.
This combined with <a>Link.adjusting</a> being End permits the middle points of the link route to be
retained even after the user moves or resizes nodes.
Furthermore there is a TwoWay <a>Binding</a> on <a>Link.routing</a>, so that the model remembers
whether the link route had ever been reshaped manually.
</p>
<button id="SaveButton">Save</button>
<button id="LoadButton">Load</button>
<textarea id="mySavedModel" style="width:100%;height:300px">
{ "class": "go.GraphLinksModel",
"linkFromPortIdProperty": "fromPort",
"linkToPortIdProperty": "toPort",
"modelData": {"position":"0 0"},
"nodeDataArray": [
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-3, "loc":"184 176"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-2, "loc":"248 248"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-4, "loc":"424 192"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-5, "loc":"320 152"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-6, "loc":"424 320"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-7, "loc":"352 256"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-8, "loc":"176 296"},
{"text":"DB", "figure":"Database", "fill":"lightgray", "key":-9, "loc":"288 344"},
{"text":"Step", "key":-10, "loc":"96 240"},
{"text":"Step", "key":-11, "loc":"536 280"}
],
"linkDataArray": [
{"from":-10, "to":-11, "fromPort":"R", "toPort":"L", "points":[121,240,131,240,132,240,132,240,216,240,216,176,264,176,264,104,392,104,392,240,480,240,480,280,501,280,511,280], "routing":"Orthogonal"}
]}
</textarea>
</div>
</body>
</html>