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mxgraph

javascript

examples

control.html

control.html 5.28 KB

<html>
<head>
	<title>Control example for mxGraph</title>

<script type="text/javascript">
		mxBasePath = '../src';
	</script>

<script type="text/javascript" src="../src/js/mxClient.js"></script>

<script type="text/javascript">
		// Program starts here. Creates a sample graph in the
		// DOM node with the specified ID. This function is invoked
		// from the onLoad event handler of the document (see below).
		function main(container)
		{
			// Checks if the browser is supported
			if (!mxClient.isBrowserSupported())
			{
				// Displays an error message if the browser is not supported.
				mxUtils.error('Browser is not supported!', 200, false);
			}
			else
			{
				// Creates the graph inside the given container
				var graph = new mxGraph(container);
				graph.setPanning(true);
				
				// Specifies the URL and size of the new control
				var deleteImage = new mxImage('editors/images/overlays/forbidden.png', 16, 16);

// Overridden to add an additional control to the state at creation time
				mxCellRendererCreateControl = mxCellRenderer.prototype.createControl;
				mxCellRenderer.prototype.createControl = function(state)
				{
					mxCellRendererCreateControl.apply(this, arguments);
					
					var graph = state.view.graph;
					
					if (graph.getModel().isVertex(state.cell))
					{
						if (state.deleteControl == null)
						{
							var b = new mxRectangle(0, 0, deleteImage.width, deleteImage.height);
							state.deleteControl = new mxImageShape(b, deleteImage.src);
							state.deleteControl.dialect = graph.dialect;
							state.deleteControl.preserveImageAspect = false;
							
							this.initControl(state, state.deleteControl, false, function (evt)
							{
								if (graph.isEnabled())
								{
									graph.removeCells([state.cell]);
									mxEvent.consume(evt);
								}
							});
						}
					}
					else if (state.deleteControl != null)
					{
						state.deleteControl.destroy();
						state.deleteControl = null;
					}
				};
				
				// Helper function to compute the bounds of the control
				var getDeleteControlBounds = function(state)
				{
					if (state.deleteControl != null)
					{
						var oldScale = state.deleteControl.scale;
						var w = state.deleteControl.bounds.width / oldScale;
						var h = state.deleteControl.bounds.height / oldScale;
						var s = state.view.scale;

return (state.view.graph.getModel().isEdge(state.cell)) ? 
							new mxRectangle(state.x + state.width / 2 - w / 2 * s,
								state.y + state.height / 2 - h / 2 * s, w * s, h * s)
							: new mxRectangle(state.x + state.width - w * s,
								state.y, w * s, h * s);
					}
					
					return null;
				};
				
				// Overridden to update the scale and bounds of the control
				mxCellRendererRedrawControl = mxCellRenderer.prototype.redrawControl;
				mxCellRenderer.prototype.redrawControl = function(state)
				{
					mxCellRendererRedrawControl.apply(this, arguments);
					
					if (state.deleteControl != null)
					{
						var bounds = getDeleteControlBounds(state);
						var s = state.view.scale;
						
						if (state.deleteControl.scale != s || !state.deleteControl.bounds.equals(bounds))
						{
							state.deleteControl.bounds = bounds;
							state.deleteControl.scale = s;
							state.deleteControl.redraw();
						}
					}
				};
				
				// Overridden to remove the control if the state is destroyed
				mxCellRendererDestroy = mxCellRenderer.prototype.destroy;
				mxCellRenderer.prototype.destroy = function(state)
				{
					mxCellRendererDestroy.apply(this, arguments);

if (state.deleteControl != null)
					{
						state.deleteControl.destroy();
						state.deleteControl = null;
					}
				};

// Uncomment the following if you want the container
				// to fit the size of the graph
				//graph.setResizeContainer(true);
				
				// Enables rubberband selection
				new mxRubberband(graph);
				
				// Gets the default parent for inserting new cells. This
				// is normally the first child of the root (ie. layer 0).
				var parent = graph.getDefaultParent();
								
				// Adds cells to the model in a single step
				graph.getModel().beginUpdate();
				try
				{
					var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
					var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
					var e1 = graph.insertEdge(parent, null, '', v1, v2);
				}
				finally
				{
					// Updates the display
					graph.getModel().endUpdate();
				}
				
				graph.centerZoom = false;
				
				document.body.appendChild(mxUtils.button('Zoom In', function()
				{
					graph.zoomIn();
				}));
				
				document.body.appendChild(mxUtils.button('Zoom Out', function()
				{
					graph.zoomOut();
				}));
			}
		};
	</script>
</head>

<body onload="main(document.getElementById('graphContainer'))">

<div id="graphContainer"
		style="overflow:hidden;width:621px;height:441px;background:url('editors/images/grid.gif');cursor:default;">
	</div>
</body>
</html>

一键复制编辑原始数据按行查看历史

Gaudenz Alder 提交于 2014年10月03日 20:49 +08:00 . 3.1.0.0 release

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177

<!--
 Copyright (c) 2006-2013, JGraph Ltd

 Control example for mxGraph. This example demonstrates adding
 controls to specific cells in a graph.
-->
<html>
<head>
	<title>Control example for mxGraph</title>

	<!-- Sets the basepath for the library if not in same directory -->
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

	<!-- Loads and initializes the library -->
	<script type="text/javascript" src="../src/js/mxClient.js"></script>

	<!-- Example code -->
	<script type="text/javascript">
		// Program starts here. Creates a sample graph in the
		// DOM node with the specified ID. This function is invoked
		// from the onLoad event handler of the document (see below).
		function main(container)
		{
			// Checks if the browser is supported
			if (!mxClient.isBrowserSupported())
			{
				// Displays an error message if the browser is not supported.
				mxUtils.error('Browser is not supported!', 200, false);
			}
			else
			{
				// Creates the graph inside the given container
				var graph = new mxGraph(container);
				graph.setPanning(true);
				
				// Specifies the URL and size of the new control
				var deleteImage = new mxImage('editors/images/overlays/forbidden.png', 16, 16);

				// Overridden to add an additional control to the state at creation time
				mxCellRendererCreateControl = mxCellRenderer.prototype.createControl;
				mxCellRenderer.prototype.createControl = function(state)
				{
					mxCellRendererCreateControl.apply(this, arguments);
					
					var graph = state.view.graph;
					
					if (graph.getModel().isVertex(state.cell))
					{
						if (state.deleteControl == null)
						{
							var b = new mxRectangle(0, 0, deleteImage.width, deleteImage.height);
							state.deleteControl = new mxImageShape(b, deleteImage.src);
							state.deleteControl.dialect = graph.dialect;
							state.deleteControl.preserveImageAspect = false;
							
							this.initControl(state, state.deleteControl, false, function (evt)
							{
								if (graph.isEnabled())
								{
									graph.removeCells([state.cell]);
									mxEvent.consume(evt);
								}
							});
						}
					}
					else if (state.deleteControl != null)
					{
						state.deleteControl.destroy();
						state.deleteControl = null;
					}
				};
				
				// Helper function to compute the bounds of the control
				var getDeleteControlBounds = function(state)
				{
					if (state.deleteControl != null)
					{
						var oldScale = state.deleteControl.scale;
						var w = state.deleteControl.bounds.width / oldScale;
						var h = state.deleteControl.bounds.height / oldScale;
						var s = state.view.scale;			

						return (state.view.graph.getModel().isEdge(state.cell)) ? 
							new mxRectangle(state.x + state.width / 2 - w / 2 * s,
								state.y + state.height / 2 - h / 2 * s, w * s, h * s)
							: new mxRectangle(state.x + state.width - w * s,
								state.y, w * s, h * s);
					}
					
					return null;
				};
				
				// Overridden to update the scale and bounds of the control
				mxCellRendererRedrawControl = mxCellRenderer.prototype.redrawControl;
				mxCellRenderer.prototype.redrawControl = function(state)
				{
					mxCellRendererRedrawControl.apply(this, arguments);
					
					if (state.deleteControl != null)
					{
						var bounds = getDeleteControlBounds(state);
						var s = state.view.scale;
						
						if (state.deleteControl.scale != s || !state.deleteControl.bounds.equals(bounds))
						{
							state.deleteControl.bounds = bounds;
							state.deleteControl.scale = s;
							state.deleteControl.redraw();
						}
					}
				};
				
				// Overridden to remove the control if the state is destroyed
				mxCellRendererDestroy = mxCellRenderer.prototype.destroy;
				mxCellRenderer.prototype.destroy = function(state)
				{
					mxCellRendererDestroy.apply(this, arguments);

					if (state.deleteControl != null)
					{
						state.deleteControl.destroy();
						state.deleteControl = null;
					}
				};

				// Uncomment the following if you want the container
				// to fit the size of the graph
				//graph.setResizeContainer(true);
				
				// Enables rubberband selection
				new mxRubberband(graph);
				
				// Gets the default parent for inserting new cells. This
				// is normally the first child of the root (ie. layer 0).
				var parent = graph.getDefaultParent();
								
				// Adds cells to the model in a single step
				graph.getModel().beginUpdate();
				try
				{
					var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30);
					var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30);
					var e1 = graph.insertEdge(parent, null, '', v1, v2);
				}
				finally
				{
					// Updates the display
					graph.getModel().endUpdate();
				}
				
				graph.centerZoom = false;
				
				document.body.appendChild(mxUtils.button('Zoom In', function()
				{
					graph.zoomIn();
				}));
				
				document.body.appendChild(mxUtils.button('Zoom Out', function()
				{
					graph.zoomOut();
				}));
			}
		};
	</script>
</head>

<!-- Page passes the container for the graph to the program -->
<body onload="main(document.getElementById('graphContainer'))">

	<!-- Creates a container for the graph with a grid wallpaper -->
	<div id="graphContainer"
		style="overflow:hidden;width:621px;height:441px;background:url('editors/images/grid.gif');cursor:default;">
	</div>
</body>
</html>