162 lines
6.8 KiB
HTML
162 lines
6.8 KiB
HTML
<!--
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$Id: Export.htm,v 1.1 2014/01/03 12:30:29 gaudenz Exp $
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Copyright (c) 2006-2013, JGraph Ltd
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-->
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<html>
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<head>
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<title>Export 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 = '/mxgraph/javascript/src';
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</script>
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<!-- Loads and initializes the library -->
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<script type="text/javascript" src="/mxgraph/javascript/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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// Checks if the browser is supported
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if (!mxClient.isBrowserSupported()) {
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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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// Disables the built-in context menu
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mxEvent.disableContextMenu(container);
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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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// Enables rubberband selection
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new mxRubberband(graph);
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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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var parent = graph.getDefaultParent();
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// Adds cells to the model in a single step
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graph.getModel().beginUpdate();
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try {
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var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
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var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
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var e1 = graph.insertEdge(parent, null, '', v1, v2);
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}
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finally {
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// Updates the display
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graph.getModel().endUpdate();
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}
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// Exporting to SVG using EchoServlet
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document.body.appendChild(mxUtils.button('Export SVG', function () {
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var background = '#ffffff';
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var scale = 1;
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var border = 1;
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var imgExport = new mxImageExport();
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var bounds = graph.getGraphBounds();
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var vs = graph.view.scale;
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// Prepares SVG document that holds the output
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var svgDoc = mxUtils.createXmlDocument();
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var root = (svgDoc.createElementNS != null) ?
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svgDoc.createElementNS(mxConstants.NS_SVG, 'svg') : svgDoc.createElement('svg');
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if (background != null) {
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if (root.style != null) {
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root.style.backgroundColor = background;
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}
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else {
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root.setAttribute('style', 'background-color:' + background);
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}
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}
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if (svgDoc.createElementNS == null) {
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root.setAttribute('xmlns', mxConstants.NS_SVG);
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}
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else {
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// KNOWN: Ignored in IE9-11, adds namespace for each image element instead. No workaround.
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root.setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:xlink', mxConstants.NS_XLINK);
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}
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root.setAttribute('width', (Math.ceil(bounds.width * scale / vs) + 2 * border) + 'px');
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root.setAttribute('height', (Math.ceil(bounds.height * scale / vs) + 2 * border) + 'px');
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root.setAttribute('version', '1.1');
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// Adds group for anti-aliasing via transform
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var group = (svgDoc.createElementNS != null) ?
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svgDoc.createElementNS(mxConstants.NS_SVG, 'g') : svgDoc.createElement('g');
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group.setAttribute('transform', 'translate(0.5,0.5)');
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root.appendChild(group);
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svgDoc.appendChild(root);
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// Renders graph. Offset will be multiplied with state's scale when painting state.
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var svgCanvas = new mxSvgCanvas2D(group);
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svgCanvas.translate(Math.floor((border / scale - bounds.x) / vs), Math.floor((border / scale - bounds.y) / vs));
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svgCanvas.scale(scale / vs);
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imgExport.drawState(graph.getView().getState(graph.model.root), svgCanvas);
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var xml = encodeURIComponent(mxUtils.getXml(root));
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new mxXmlRequest('/Echo.ashx', 'filename=export.svg&format=svg' +
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'&xml=' + xml).simulate(document, '_blank');
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}));
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function exportFile(format) {
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var bg = '#ffffff';
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var scale = 1;
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var b = 1;
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var imgExport = new mxImageExport();
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var bounds = graph.getGraphBounds();
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var vs = graph.view.scale;
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// New image export
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var xmlDoc = mxUtils.createXmlDocument();
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var root = xmlDoc.createElement('output');
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xmlDoc.appendChild(root);
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// Renders graph. Offset will be multiplied with state's scale when painting state.
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var xmlCanvas = new mxXmlCanvas2D(root);
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xmlCanvas.translate(Math.floor((b / scale - bounds.x) / vs), Math.floor((b / scale - bounds.y) / vs));
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xmlCanvas.scale(scale / vs);
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imgExport.drawState(graph.getView().getState(graph.model.root), xmlCanvas);
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// Puts request data together
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var w = Math.ceil(bounds.width * scale / vs + 2 * b);
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var h = Math.ceil(bounds.height * scale / vs + 2 * b);
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var xml = mxUtils.getXml(root);
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if (bg != null) {
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bg = '&bg=' + bg;
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}
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new mxXmlRequest('/Export.ashx', 'filename=export.' + format + '&format=' + format +
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bg + '&w=' + w + '&h=' + h + '&xml=' + encodeURIComponent(xml)).
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simulate(document, '_blank');
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}
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// Exporting to bitmap using ExportServlet
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document.body.appendChild(mxUtils.button('Export PNG', function () {
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exportFile('png');
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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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<!-- Page passes the container for the graph to the program -->
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<body onload="main(document.getElementById('graphContainer'))">
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<!-- Creates a container for the graph with a grid wallpaper -->
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<div id="graphContainer"
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style="position:relative;overflow:hidden;width:321px;height:241px;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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