From c24a26902a8ce3b5f6bb5de7917843e449caa98e Mon Sep 17 00:00:00 2001
From: sbosse <sbosse@uni-bremen.de>
Date: Mon, 21 Jul 2025 22:55:37 +0200
Subject: [PATCH] Mon 21 Jul 22:43:21 CEST 2025

---
 .../examples/network/events/renderEvents.html | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 js/dos/ext/vis/examples/network/events/renderEvents.html
diff --git a/js/dos/ext/vis/examples/network/events/renderEvents.html b/js/dos/ext/vis/examples/network/events/renderEvents.html
new file mode 100644
index 0000000..ec0ad44
--- /dev/null
+++ b/js/dos/ext/vis/examples/network/events/renderEvents.html
@@ -0,0 +1,83 @@
+<!doctype html>
+<html>
+<head>
+  <title>Network | Basic usage</title>
+
+  <script type="text/javascript" src="../../../dist/vis.js"></script>
+  <link href="../../../dist/vis.css" rel="stylesheet" type="text/css"/>
+
+  <style type="text/css">
+    #mynetwork {
+      width: 600px;
+      height: 400px;
+      border: 1px solid lightgray;
+    }
+
+    p {
+      max-width:600px;
+    }
+  </style>
+</head>
+<body>
+
+<p>
+  You can draw on the canvas using normal HTML5 canvas functions. The before drawing will be behind the network, the after drawing will be in front of the network.
+</p>
+
+<div id="mynetwork"></div>
+<pre id="eventSpan"></pre>
+<script type="text/javascript">
+  // create an array with nodes
+  var nodes = new vis.DataSet([
+    {id: 1, label: 'Node 1'},
+    {id: 2, label: 'Node 2'},
+    {id: 3, label: 'Node 3'},
+    {id: 4, label: 'Node 4'},
+    {id: 5, label: 'Node 5'}
+  ]);
+
+  // create an array with edges
+  var edges = new vis.DataSet([
+    {from: 1, to: 3},
+    {from: 1, to: 2},
+    {from: 2, to: 4},
+    {from: 2, to: 5}
+  ]);
+
+  // create a network
+  var container = document.getElementById('mynetwork');
+  var data = {
+    nodes: nodes,
+    edges: edges
+  };
+  var options = {};
+  var network = new vis.Network(container, data, options);
+
+  network.on("initRedraw", function () {
+    // do something like move some custom elements?
+  });
+  network.on("beforeDrawing", function (ctx) {
+    var nodeId = 1;
+    var nodePosition = network.getPositions([nodeId]);
+    ctx.strokeStyle = '#A6D5F7';
+    ctx.fillStyle = '#294475';
+    ctx.circle(nodePosition[nodeId].x, nodePosition[nodeId].y,50);
+    ctx.fill();
+    ctx.stroke();
+  });
+  network.on("afterDrawing", function (ctx) {
+    var nodeId = 1;
+    var nodePosition = network.getPositions([nodeId]);
+    ctx.strokeStyle = '#294475';
+    ctx.lineWidth = 4;
+    ctx.fillStyle = '#A6D5F7';
+    ctx.circle(nodePosition[nodeId].x, nodePosition[nodeId].y,20);
+    ctx.fill();
+    ctx.stroke();
+  });
+
+</script>
+
+<script src="../../googleAnalytics.js"></script>
+</body>
+</html>
