185 lines
5.7 KiB
HTML
185 lines
5.7 KiB
HTML
<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Pagebreaks example for mxGraph. This example demonstrates using the
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pageBreaksVisible and preferPageSize switches and adding headers and
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footers to print output.
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-->
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<html>
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<head>
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<title>Pagebreaks 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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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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graph.view.setScale(0.15);
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graph.pageBreaksVisible = true;
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graph.pageBreakDashed = true;
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graph.preferPageSize = true;
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graph.centerZoom = false;
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graph.setPanning(true);
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// Account for the header and footer size in the page format
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var headerSize = 100;
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var footerSize = 100;
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// Removes header and footer from page height
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graph.pageFormat.height -= headerSize + footerSize;
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// Takes zoom into account for moving cells
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graph.graphHandler.scaleGrid = true;
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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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{
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var v1 = graph.insertVertex(parent, null, 'Hello,', 10, 10, 280, 330);
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var v2 = graph.insertVertex(parent, null, 'World!',
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graph.pageFormat.width * graph.pageScale - 280 - 10,
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graph.pageFormat.height * graph.pageScale - 330 - 10,
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280, 330);
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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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{
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// Updates the display
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graph.getModel().endUpdate();
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}
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document.body.appendChild(mxUtils.button('Toggle Page Breaks',
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function(evt)
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{
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graph.pageBreaksVisible = !graph.pageBreaksVisible;
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graph.sizeDidChange();
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}
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));
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document.body.appendChild(mxUtils.button('Zoom In',
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function(evt)
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{
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graph.zoomIn();
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}
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));
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document.body.appendChild(mxUtils.button('Zoom Out',
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function(evt)
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{
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graph.zoomOut();
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}
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));
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document.body.appendChild(mxUtils.button('Print',
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function(evt)
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{
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// Matches actual printer paper size and avoids blank pages
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var scale = 0.5;
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// Applies scale to page
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var pf = mxRectangle.fromRectangle(graph.pageFormat || mxConstants.PAGE_FORMAT_A4_PORTRAIT);
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pf.width = Math.round(pf.width * scale * graph.pageScale);
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pf.height = Math.round(pf.height * scale * graph.pageScale);
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// Finds top left corner of top left page
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var bounds = mxRectangle.fromRectangle(graph.getGraphBounds());
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bounds.x -= graph.view.translate.x * graph.view.scale;
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bounds.y -= graph.view.translate.y * graph.view.scale;
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var x0 = Math.floor(bounds.x / pf.width) * pf.width;
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var y0 = Math.floor(bounds.y / pf.height) * pf.height;
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var preview = new mxPrintPreview(graph, scale, pf, 0, -x0, -y0);
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preview.marginTop = headerSize * scale * graph.pageScale;
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preview.marginBottom = footerSize * scale * graph.pageScale;
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preview.autoOrigin = false;
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var oldRenderPage = preview.renderPage;
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preview.renderPage = function(w, h, x, y, content, pageNumber)
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{
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var div = oldRenderPage.apply(this, arguments);
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var header = document.createElement('div');
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header.style.position = 'absolute';
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header.style.boxSizing = 'border-box';
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header.style.fontFamily = 'Arial,Helvetica';
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header.style.height = (this.marginTop - 10) + 'px';
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header.style.textAlign = 'center';
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header.style.verticalAlign = 'middle';
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header.style.marginTop = 'auto';
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header.style.fontSize = '12px';
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header.style.width = '100%';
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// Vertical centering for text in header/footer
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header.style.lineHeight = (this.marginTop - 10) + 'px';
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var footer = header.cloneNode(true);
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mxUtils.write(header, 'Page ' + pageNumber + ' - Header');
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header.style.borderBottom = '1px solid gray';
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header.style.top = '0px';
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mxUtils.write(footer, 'Page ' + pageNumber + ' - Footer');
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footer.style.borderTop = '1px solid gray';
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footer.style.bottom = '0px';
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div.firstChild.appendChild(footer);
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div.firstChild.appendChild(header);
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return div;
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};
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preview.open();
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}
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));
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document.body.appendChild(mxUtils.button('Reset View',
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function(evt)
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{
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graph.view.scaleAndTranslate(0.15, 0, 0);
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}
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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="overflow:hidden;position:relative;width:641px;height:481px;background:url('editors/images/grid.gif');cursor:default;">
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</div>
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</body>
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</html>
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