189 lines
5.6 KiB
HTML
189 lines
5.6 KiB
HTML
<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Markers example for mxGraph. This example demonstrates creating
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custom markers and customizing the built-in markers.
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-->
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<html>
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<head>
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<title>Markers example for mxGraph</title>
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<!-- Sets the basepath for the library if not in same directory -->
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<script type="text/javascript">
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mxBasePath = '../src';
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</script>
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<!-- Loads and initializes the library -->
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<script type="text/javascript" src="../src/js/mxClient.js"></script>
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<!-- Example code -->
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<script type="text/javascript">
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// Program starts here. Creates a sample graph in the
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// DOM node with the specified ID. This function is invoked
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// from the onLoad event handler of the document (see below).
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function main(container)
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{
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// Checks if the browser is supported
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if (!mxClient.isBrowserSupported())
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{
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// Displays an error message if the browser is not supported.
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mxUtils.error('Browser is not supported!', 200, false);
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}
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else
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{
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// Enables guides
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mxGraphHandler.prototype.guidesEnabled = true;
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mxEdgeHandler.prototype.snapToTerminals = true;
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// Registers and defines the custom marker
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mxMarker.addMarker('dash', function(canvas, shape, type, pe, unitX, unitY, size, source, sw, filled)
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{
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var nx = unitX * (size + sw + 1);
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var ny = unitY * (size + sw + 1);
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return function()
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{
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canvas.begin();
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canvas.moveTo(pe.x - nx / 2 - ny / 2, pe.y - ny / 2 + nx / 2);
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canvas.lineTo(pe.x + ny / 2 - 3 * nx / 2, pe.y - 3 * ny / 2 - nx / 2);
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canvas.stroke();
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};
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});
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// Defines custom message shape
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function MessageShape()
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{
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mxCylinder.call(this);
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};
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mxUtils.extend(MessageShape, mxCylinder);
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MessageShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
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{
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if (isForeground)
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{
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path.moveTo(0, 0);
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path.lineTo(w / 2, h / 2);
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path.lineTo(w, 0);
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}
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else
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{
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path.moveTo(0, 0);
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path.lineTo(w, 0);
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path.lineTo(w, h);
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path.lineTo(0, h);
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path.close();
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}
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};
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// Registers the message shape
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mxCellRenderer.registerShape('message', MessageShape);
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// Defines custom edge shape
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function LinkShape()
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{
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mxArrow.call(this);
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};
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mxUtils.extend(LinkShape, mxArrow);
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LinkShape.prototype.paintEdgeShape = function(c, pts)
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{
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var width = 10;
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// Base vector (between end points)
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var p0 = pts[0];
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var pe = pts[pts.length - 1];
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var dx = pe.x - p0.x;
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var dy = pe.y - p0.y;
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var dist = Math.sqrt(dx * dx + dy * dy);
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var length = dist;
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// Computes the norm and the inverse norm
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var nx = dx / dist;
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var ny = dy / dist;
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var basex = length * nx;
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var basey = length * ny;
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var floorx = width * ny/3;
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var floory = -width * nx/3;
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// Computes points
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var p0x = p0.x - floorx / 2;
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var p0y = p0.y - floory / 2;
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var p1x = p0x + floorx;
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var p1y = p0y + floory;
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var p2x = p1x + basex;
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var p2y = p1y + basey;
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var p3x = p2x + floorx;
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var p3y = p2y + floory;
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// p4 not necessary
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var p5x = p3x - 3 * floorx;
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var p5y = p3y - 3 * floory;
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c.begin();
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c.moveTo(p1x, p1y);
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c.lineTo(p2x, p2y);
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c.moveTo(p5x + floorx, p5y + floory);
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c.lineTo(p0x, p0y);
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c.stroke();
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};
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// Registers the link shape
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mxCellRenderer.registerShape('link', LinkShape);
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// Creates the graph
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var graph = new mxGraph(container);
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// Sets default styles
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var style = graph.getStylesheet().getDefaultVertexStyle();
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style['fillColor'] = '#FFFFFF';
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style['strokeColor'] = '#000000';
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style['fontColor'] = '#000000';
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style['fontStyle'] = '1';
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style = graph.getStylesheet().getDefaultEdgeStyle();
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style['strokeColor'] = '#000000';
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style['fontColor'] = '#000000';
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style['fontStyle'] = '0';
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style['fontStyle'] = '0';
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style['startSize'] = '8';
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style['endSize'] = '8';
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// Populates the graph
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var parent = graph.getDefaultParent();
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graph.getModel().beginUpdate();
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try
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{
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var v1 = graph.insertVertex(parent, null, 'v1', 20, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, 'v2', 440, 20, 80, 30);
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var e1 = graph.insertEdge(parent, null, '', v1, v2, 'dashed=1;'+
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'startArrow=oval;endArrow=block;sourcePerimeterSpacing=4;startFill=0;endFill=0;');
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var e11 = graph.insertVertex(e1, null, 'Label', 0, 0, 20, 14,
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'shape=message;labelBackgroundColor=#ffffff;labelPosition=left;spacingRight=2;align=right;fontStyle=0;');
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e11.geometry.offset = new mxPoint(-10, -7);
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e11.geometry.relative = true;
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e11.connectable = false;
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var v3 = graph.insertVertex(parent, null, 'v3', 20, 120, 80, 30);
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var v4 = graph.insertVertex(parent, null, 'v4', 440, 120, 80, 30);
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var e2 = graph.insertEdge(parent, null, 'Label', v3, v4,
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'startArrow=dash;startSize=12;endArrow=block;labelBackgroundColor=#FFFFFF;');
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var v5 = graph.insertVertex(parent, null, 'v5', 40, 220, 40, 40, 'shape=ellipse;perimeter=ellipsePerimeter;');
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var v6 = graph.insertVertex(parent, null, 'v6', 460, 220, 40, 40, 'shape=doubleEllipse;perimeter=ellipsePerimeter;');
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var e3 = graph.insertEdge(parent, null, 'Link', v5, v6,
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'shape=link;labelBackgroundColor=#FFFFFF;');
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}
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finally
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{
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graph.getModel().endUpdate();
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}
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}
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};
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</script>
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</head>
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<body onload="main(document.getElementById('graphContainer'))">
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<div id="graphContainer"
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style="overflow:hidden;position:relative;width:641px;height:381px;border:1px solid gray;cursor:default;">
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</div>
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</body>
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</html>
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