193 lines
5.7 KiB
HTML
193 lines
5.7 KiB
HTML
<!--
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Copyright (c) 2006-2014, JGraph Ltd
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Handles example for mxGraph. This example demonstrates using mxHandle to change custom styles interactively.
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-->
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<html>
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<head>
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<title>Handles 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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function MyShape()
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{
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mxCylinder.call(this);
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};
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mxUtils.extend(MyShape, mxCylinder);
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MyShape.prototype.defaultPos1 = 20;
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MyShape.prototype.defaultPos2 = 60;
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MyShape.prototype.getLabelBounds = function(rect)
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{
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var pos1 = mxUtils.getValue(this.style, 'pos1', this.defaultPos1) * this.scale;
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var pos2 = mxUtils.getValue(this.style, 'pos2', this.defaultPos2) * this.scale;
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return new mxRectangle(rect.x, rect.y + pos1, rect.width, Math.min(rect.height, pos2) - Math.max(0, pos1));
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};
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MyShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
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{
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var pos1 = mxUtils.getValue(this.style, 'pos1', this.defaultPos1);
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var pos2 = mxUtils.getValue(this.style, 'pos2', this.defaultPos2);
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if (isForeground)
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{
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if (pos1 < h)
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{
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path.moveTo(0, pos1);
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path.lineTo(w, pos1);
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}
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if (pos2 < h)
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{
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path.moveTo(0, pos2);
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path.lineTo(w, pos2);
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}
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}
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else
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{
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path.rect(0, 0, w, h);
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}
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};
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mxCellRenderer.prototype.defaultShapes['myShape'] = MyShape;
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mxVertexHandler.prototype.createCustomHandles = function()
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{
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if (this.state.style['shape'] == 'myShape')
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{
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// Implements the handle for the first divider
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var firstHandle = new mxHandle(this.state);
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firstHandle.getPosition = function(bounds)
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{
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var pos2 = Math.max(0, Math.min(bounds.height, parseFloat(mxUtils.getValue(this.state.style, 'pos2', MyShape.prototype.defaultPos2))));
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var pos1 = Math.max(0, Math.min(pos2, parseFloat(mxUtils.getValue(this.state.style, 'pos1', MyShape.prototype.defaultPos1))));
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return new mxPoint(bounds.getCenterX(), bounds.y + pos1);
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};
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firstHandle.setPosition = function(bounds, pt)
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{
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var pos2 = Math.max(0, Math.min(bounds.height, parseFloat(mxUtils.getValue(this.state.style, 'pos2', MyShape.prototype.defaultPos2))));
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this.state.style['pos1'] = Math.round(Math.max(0, Math.min(pos2, pt.y - bounds.y)));
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};
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firstHandle.execute = function()
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{
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this.copyStyle('pos1');
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}
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firstHandle.ignoreGrid = true;
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// Implements the handle for the second divider
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var secondHandle = new mxHandle(this.state);
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secondHandle.getPosition = function(bounds)
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{
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var pos1 = Math.max(0, Math.min(bounds.height, parseFloat(mxUtils.getValue(this.state.style, 'pos1', MyShape.prototype.defaultPos1))));
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var pos2 = Math.max(pos1, Math.min(bounds.height, parseFloat(mxUtils.getValue(this.state.style, 'pos2', MyShape.prototype.defaultPos2))));
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return new mxPoint(bounds.getCenterX(), bounds.y + pos2);
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};
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secondHandle.setPosition = function(bounds, pt)
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{
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var pos1 = Math.max(0, Math.min(bounds.height, parseFloat(mxUtils.getValue(this.state.style, 'pos1', MyShape.prototype.defaultPos1))));
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this.state.style['pos2'] = Math.round(Math.max(pos1, Math.min(bounds.height, pt.y - bounds.y)));
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};
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secondHandle.execute = function()
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{
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this.copyStyle('pos2');
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}
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secondHandle.ignoreGrid = true;
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return [firstHandle, secondHandle];
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}
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return null;
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};
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mxVertexHandler.prototype.livePreview = true;
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mxVertexHandler.prototype.rotationEnabled = true;
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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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// 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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graph.setCellsCloneable(true);
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graph.setHtmlLabels(true);
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graph.setPanning(true);
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graph.centerZoom = false;
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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, 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',
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20, 20, 240, 120, 'shape=myShape;whiteSpace=wrap;overflow=hidden;pos1=30;pos2=80;');
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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('+', function()
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{
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graph.zoomIn();
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}));
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document.body.appendChild(mxUtils.button('-', function()
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{
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graph.zoomOut();
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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:621px;height:441px;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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