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js画图开发库--mxgraph--[wires-电路图.html]

js画图开发库mxgraphwires电路图 
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 js画图开发库--mxgraph--[wires-电路图.html] 

 

 

 

<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
	<head>
	<meta http-equiv=Content-Type content="text/html;charset=utf-8">
	<title>电路图</title>
	
	<!-- 如果本文件的包与src不是在同一个目录,就要将basepath设置到src目录下 -->
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

	<!-- 引入支持库文件 -->
	<script type="text/javascript" src="../src/js/mxClient.js"></script>
	
	<script type="text/javascript">
		// If connect preview is not moved away then getCellAt is used to detect the cell under
		// the mouse if the mouse is over the preview shape in IE (no event transparency), ie.
		// the built-in hit-detection of the HTML document will not be used in this case.
		mxConnectionHandler.prototype.movePreviewAway = false;
		mxConnectionHandler.prototype.waypointsEnabled = true;
		mxGraph.prototype.resetEdgesOnConnect = false;
		mxConstants.SHADOWCOLOR = '#C0C0C0';
		mxConnector.prototype.crisp = true;
		mxLine.prototype.crisp = true;
		var joinNodeSize = 7;
		var strokeWidth = 2;
		
		// 替换接口处图标
		mxConstraintHandler.prototype.pointImage = new mxImage('images/dot.gif', 10, 10);
		
		// 启用导航线
		mxGraphHandler.prototype.guidesEnabled = true;
		
	    // Alt键按下禁用导航线
	    mxGuide.prototype.isEnabledForEvent = function(evt)
	    {
	    	return !mxEvent.isAltDown(evt);
	    };
		
		// 是否自动连接目标
		mxEdgeHandler.prototype.snapToTerminals = true;
		
		// 程序启动
		function main(container)
		{
			var graph = new mxGraph(container);
			graph.view.scale = 1;
			graph.setPanning(true);
			graph.setConnectable(true);
			graph.setConnectableEdges(true);
			graph.setDisconnectOnMove(false);
			graph.foldingEnabled = false;
			
			//最大尺寸
			graph.maximumGraphBounds = new mxRectangle(0, 0, 800, 600)
			graph.border = 50;

			// 禁用下拉菜单
			graph.panningHandler.isPopupTrigger = function() { return false; };
			
			// 启用回车键停止编辑（用shift输入的换行）
			graph.setEnterStopsCellEditing(true);

			// 使用浏览器默认菜单
			new mxRubberband(graph);
			
			// 执行无子单元格的连接点的替代解决方案。 如所示portrefs.html例如以允许为每个端口的呼入/呼出的方向，这可以扩展。
			graph.getAllConnectionConstraints = function(terminal)
			{
			   var geo = (terminal != null) ? this.getCellGeometry(terminal.cell) : null;

			   if ((geo != null ? !geo.relative : false) &&
				   this.getModel().isVertex(terminal.cell) &&
				   this.getModel().getChildCount(terminal.cell) == 0)
			   {
					return [new mxConnectionConstraint(new mxPoint(0, 0.5), false),
				    	new mxConnectionConstraint(new mxPoint(1, 0.5), false)];
			    }

				return null;
			};

			// 约束连接
			graph.connectionHandler.isConnectableCell = function(cell)
			{
				if (this.graph.getModel().isEdge(cell))
				{
					return true;
				}
				else
				{
					var geo = (cell != null) ? this.graph.getCellGeometry(cell) : null;
					
					return (geo != null) ? geo.relative : false;
				}
			};
			mxEdgeHandler.prototype.isConnectableCell = function(cell)
			{
				return graph.connectionHandler.isConnectableCell(cell);
			};
			
			// 添加提示
			graph.setTooltips(true);
			
			var getTooltipForCell = graph.getTooltipForCell;
			graph.getTooltipForCell = function(cell)
			{
				var tip = '';
				
				if (cell != null)
				{
					var src = this.getModel().getTerminal(cell, true);
					
					if (src != null)
					{
						tip += this.getTooltipForCell(src) + ' ';
					}
					
					var parent = this.getModel().getParent(cell);
					
					if (this.getModel().isVertex(parent))
					{
						tip += this.getTooltipForCell(parent) + '.';
					}
	
					tip += getTooltipForCell.apply(this, arguments);
					
					var trg = this.getModel().getTerminal(cell, false);
					
					if (trg != null)
					{
						tip += ' ' + this.getTooltipForCell(trg);
					}
				}

				return tip;
			};

			// 在黑色背景和明亮的风格间切换
			var invert = false;
			
			if (invert)
			{
				container.style.backgroundColor = 'black';
				
				// 白色就地编辑文本
				mxCellEditorStartEditing = mxCellEditor.prototype.startEditing;
				mxCellEditor.prototype.startEditing = function (cell, trigger)
				{
					mxCellEditorStartEditing.apply(this, arguments);
					
					if (this.textarea != null)
					{
						this.textarea.style.color = '#FFFFFF';					
					}
				};
				
				mxGraphHandler.prototype.previewColor = 'white';
			}
			
			var labelBackground = (invert) ? '#000000' : '#FFFFFF';
			var fontColor = (invert) ? '#FFFFFF' : '#000000';
			var strokeColor = (invert) ? '#C0C0C0' : '#000000';
			var fillColor = (invert) ? 'none' : '#FFFFFF';
			
			var style = graph.getStylesheet().getDefaultEdgeStyle();
			delete style['endArrow'];
			style['strokeColor'] = strokeColor;
			style['labelBackgroundColor'] = labelBackground;
			style['edgeStyle'] = 'wireEdgeStyle';
			style['fontColor'] = fontColor;
			style['fontSize'] = '9';
			style['movable'] = '0';
			style['strokeWidth'] = strokeWidth;
			//style['rounded'] = '1';
			
			// Sets join node size
			style['startSize'] = joinNodeSize;
			style['endSize'] = joinNodeSize;
			
			style = graph.getStylesheet().getDefaultVertexStyle();
			style['gradientDirection'] = 'south';
			//style['gradientColor'] = '#909090';
			style['strokeColor'] = strokeColor;
			//style['fillColor'] = '#e0e0e0';
			style['fillColor'] = 'none';
			style['fontColor'] = fontColor;
			style['fontStyle'] = '1';
			style['fontSize'] = '12';
			style['resizable'] = '0';
			style['rounded'] = '1';
			style['strokeWidth'] = strokeWidth;

			var parent = graph.getDefaultParent();
			
			graph.getModel().beginUpdate();
			try
			{
				var v1 = graph.insertVertex(parent, null, 'J1', 80, 40, 40, 80,
						'verticalLabelPosition=top;verticalAlign=bottom;shadow=1;fillColor=' + fillColor);
				v1.setConnectable(false);

				var v11 = graph.insertVertex(v1, null, '1', 0, 0, 10, 16,
						'shape=line;align=left;verticalAlign=middle;fontSize=10;routingCenterX=-0.5;'+
						'spacingLeft=12;fontColor=' + fontColor + ';strokeColor=' + strokeColor);
				v11.geometry.relative = true;
				v11.geometry.offset = new mxPoint(-v11.geometry.width, 2);
				var v12 = v11.clone();
				v12.value = '2';
				v12.geometry.offset = new mxPoint(-v11.geometry.width, 22);
				v1.insert(v12);
				var v13 = v11.clone();
				v13.value = '3';
				v13.geometry.offset = new mxPoint(-v11.geometry.width, 42);
				v1.insert(v13);
				var v14 = v11.clone();
				v14.value = '4';
				v14.geometry.offset = new mxPoint(-v11.geometry.width, 62);
				v1.insert(v14);

				var v15 = v11.clone();
				v15.value = '5';
				v15.geometry.x = 1;
				v15.style =	'shape=line;align=right;verticalAlign=middle;fontSize=10;routingCenterX=0.5;'+
					'spacingRight=12;fontColor=' + fontColor + ';strokeColor=' + strokeColor;
				v15.geometry.offset = new mxPoint(0, 2);
				v1.insert(v15);
				var v16 = v15.clone();
				v16.value = '6';
				v16.geometry.offset = new mxPoint(0, 22);
				v1.insert(v16);
				var v17 = v15.clone();
				v17.value = '7';
				v17.geometry.offset = new mxPoint(0, 42);
				v1.insert(v17);
				var v18 = v15.clone();
				v18.value = '8';
				v18.geometry.offset = new mxPoint(0, 62);
				v1.insert(v18);
				
				var v19 = v15.clone();
				v19.value = 'clk';
				v19.geometry.x = 0.5;
				v19.geometry.y = 1;
				v19.geometry.width = 10;
				v19.geometry.height = 4;
				// NOTE:端口约束被定义为正东方向，所以这里必须插入
				v19.style = 'shape=triangle;direction=north;spacingBottom=12;align=center;portConstraint=horizontal;'+
					'fontSize=8;strokeColor=' + strokeColor + ';routingCenterY=0.5;';
				v19.geometry.offset = new mxPoint(-4, -4);
				v1.insert(v19);
				
				var v2 = graph.insertVertex(parent, null, 'R1', 220, 220, 80, 20,
					'shape=resistor;verticalLabelPosition=top;verticalAlign=bottom;');
				
				// 执行通过约束的连接点（参见上述）
				//v2.setConnectable(false);

 				/*var v21 = graph.insertVertex(v2, null, 'A', 0, 0.5, 10, 1,
 					'shape=none;spacingBottom=11;spacingLeft=1;align=left;fontSize=8;'+
 					'fontColor=#4c4c4c;strokeColor=#909090;');
 				v21.geometry.relative = true;
 				v21.geometry.offset = new mxPoint(0, -1);
				
 				var v22 = graph.insertVertex(v2, null, 'B', 1, 0.5, 10, 1,
 					'spacingBottom=11;spacingLeft=1;align=left;fontSize=8;'+
 					'fontColor=#4c4c4c;strokeColor=#909090;');
 				v22.geometry.relative = true;
 				v22.geometry.offset = new mxPoint(-10, -1);*/

				var v3 = graph.addCell(graph.getModel().cloneCell(v1));
				v3.value = 'J3';
				v3.geometry.x = 420;
				v3.geometry.y = 340;
				
				// 连接线终点实施的限制，或者可以使用引用，请参阅：portrefs.html
				var e1 = graph.insertEdge(parent, null, 'e1', v1.getChildAt(7), v2,
					'entryX=0;entryY=0.5;entryPerimeter=0;');
				e1.geometry.points = [new mxPoint(180, 110)];
				
				var e2 = graph.insertEdge(parent, null, 'e2', v1.getChildAt(4), v2,
					'entryX=1;entryY=0.5;entryPerimeter=0;');
				e2.geometry.points = [new mxPoint(320, 50), new mxPoint(320, 230)];
				
				var e3 = graph.insertEdge(parent, null, 'crossover', e1, e2);
				e3.geometry.setTerminalPoint(new mxPoint(180, 140), true);
				e3.geometry.setTerminalPoint(new mxPoint(320, 140), false);
				
// 				var e1 = graph.insertEdge(parent, null, 'e1', v1.getChildAt(7), v2.getChildAt(0));
// 				e1.geometry.points = [new mxPoint(180, 140)];
				
// 				var e2 = graph.insertEdge(parent, null, '', v1.getChildAt(4), v2.getChildAt(1));
// 				e2.geometry.points = [new mxPoint(320, 80)];
				
// 				var e3 = graph.insertEdge(parent, null, 'crossover', e1, e2);
// 				e3.geometry.setTerminalPoint(new mxPoint(180, 160), true);
// 				e3.geometry.setTerminalPoint(new mxPoint(320, 160), false);
				
				var e4 = graph.insertEdge(parent, null, 'e4', v2, v3.getChildAt(0),
					'exitX=1;exitY=0.5;entryPerimeter=0;');
				e4.geometry.points = [new mxPoint(380, 230)];
				
				var e5 = graph.insertEdge(parent, null, 'e5', v3.getChildAt(5), v1.getChildAt(0));
				e5.geometry.points = [new mxPoint(500, 310), new mxPoint(500, 20), new mxPoint(50, 20)];
				
				var e6 = graph.insertEdge(parent, null, '');
				e6.geometry.setTerminalPoint(new mxPoint(100, 500), true);
				e6.geometry.setTerminalPoint(new mxPoint(600, 500), false);
				
				var e7 = graph.insertEdge(parent, null, 'e7', v3.getChildAt(7), e6);
				e7.geometry.setTerminalPoint(new mxPoint(500, 500), false);
				e7.geometry.points = [new mxPoint(500, 350)];
			}
			finally
			{
				graph.getModel().endUpdate();
			}
			
			document.body.appendChild(mxUtils.button('放大Zoom In', function()
			{
				graph.zoomIn();
			}));
			
			document.body.appendChild(mxUtils.button('缩小Zoom Out', function()
			{
				graph.zoomOut();
			}));
			
			// Undo/redo 撤销/复位
			var undoManager = new mxUndoManager();
			var listener = function(sender, evt)
			{
				undoManager.undoableEditHappened(evt.getProperty('edit'));
			};
			graph.getModel().addListener(mxEvent.UNDO, listener);
			graph.getView().addListener(mxEvent.UNDO, listener);
			
			document.body.appendChild(mxUtils.button('撤销Undo', function()
			{
				undoManager.undo();
			}));
			
			document.body.appendChild(mxUtils.button('上一步Redo', function()
			{
				undoManager.redo();
			}));

			// 显示XML调试的实际模型
			document.body.appendChild(mxUtils.button('删除Delete', function()  
			{
				graph.removeCells();
			}));
			
			// 连接模式
			var checkbox = document.createElement('input');
			checkbox.setAttribute('type', 'checkbox');
			
			document.body.appendChild(checkbox);
			mxUtils.write(document.body, 'Wire Mode');
			
			// Starts connections on the background in wire-mode
			var connectionHandlerIsStartEvent = graph.connectionHandler.isStartEvent;
			graph.connectionHandler.isStartEvent = function(me)
			{
				return checkbox.checked || connectionHandlerIsStartEvent.apply(this, arguments);
			};
			
			// Avoids any connections for gestures within tolerance except when in wire-mode
			// or when over a port which
			var connectionHandlerMouseUp = graph.connectionHandler.mouseUp;
			graph.connectionHandler.mouseUp = function(sender, me)
			{
				if (this.first != null && this.previous != null)
				{
					var point = mxUtils.convertPoint(this.graph.container, me.getX(), me.getY());
					var dx = Math.abs(point.x - this.first.x);
					var dy = Math.abs(point.y - this.first.y);

					if (dx < this.graph.tolerance && dy < this.graph.tolerance)
					{
						// Selects edges in non-wire mode for single clicks, but starts
						// connecting for non-edges regardless of wire-mode
						if (!checkbox.checked && this.graph.getModel().isEdge(this.previous.cell))
						{
							this.reset();
						}
						
						return;
					}
				}
				
				connectionHandlerMouseUp.apply(this, arguments);
			};
			
			// 网格
			var checkbox2 = document.createElement('input');
			checkbox2.setAttribute('type', 'checkbox');
			checkbox2.setAttribute('checked', 'true');
			
			document.body.appendChild(checkbox2);
			mxUtils.write(document.body, 'Grid');
			
			mxEvent.addListener(checkbox2, 'click', function(evt)
			{
				if (checkbox2.checked)
				{
					container.style.background = 'url(\'images/wires-grid.gif\')';
				}
				else
				{
					container.style.background = '';
				}
				
				container.style.backgroundColor = (invert) ? 'black' : 'white';
			});
			
			mxEvent.disableContextMenu(container);
		};
	</script>
<!--  
		更新连接点
-->
	<script type="text/javascript">
		// 计算的连接线到连接线的两点之间的位置。
		mxGraphView.prototype.updateFixedTerminalPoint = function(edge, terminal, source, constraint)
		{
			var pt = null;
			
			if (constraint != null)
			{
				pt = this.graph.getConnectionPoint(terminal, constraint);
			}

			if (source)
			{
				edge.sourceSegment = null;
			}
			else
			{
				edge.targetSegment = null;
			}
			
			if (pt == null)
			{
				var s = this.scale;
				var tr = this.translate;
				var orig = edge.origin;
				var geo = this.graph.getCellGeometry(edge.cell);
				pt = geo.getTerminalPoint(source);

				// 计算两个连接点
				if (pt != null)
				{
					pt = new mxPoint(s * (tr.x + pt.x + orig.x),
									 s * (tr.y + pt.y + orig.y));
					
					// 查找最近的连接线，并计算交叉点
					if (terminal != null && terminal.absolutePoints != null)
					{
						var seg = mxUtils.findNearestSegment(terminal, pt.x, pt.y);

						// Finds orientation of the segment
						var p0 = terminal.absolutePoints[seg];
						var pe = terminal.absolutePoints[seg + 1];
						var horizontal = (p0.x - pe.x == 0);
						
						// 储存连接线状态
						var key = (source) ? 'sourceConstraint' : 'targetConstraint';
						var value = (horizontal) ? 'horizontal' : 'vertical';
						edge.style[key] = value;
						
						// Keeps the coordinate within the segment bounds
						if (horizontal)
						{
							pt.x = p0.x;
							pt.y = Math.min(pt.y, Math.max(p0.y, pe.y));
							pt.y = Math.max(pt.y, Math.min(p0.y, pe.y));
						}
						else
						{
							pt.y = p0.y;
							pt.x = Math.min(pt.x, Math.max(p0.x, pe.x));
							pt.x = Math.max(pt.x, Math.min(p0.x, pe.x));
						}
					}
				}
				// 计算连接线和点
				else if (terminal != null && terminal.cell.geometry.relative)
				{
					pt = new mxPoint(this.getRoutingCenterX(terminal),
						this.getRoutingCenterY(terminal));
				}

				// 捕捉元素点到网格
				/*if (pt != null)
				{
					var tr = this.graph.view.translate;
					var s = this.graph.view.scale;
					
					pt.x = (this.graph.snap(pt.x / s - tr.x) + tr.x) * s;
					pt.y = (this.graph.snap(pt.y / s - tr.y) + tr.y) * s;
				}*/
			}

			edge.setAbsoluteTerminalPoint(pt, source);
		};
	</script>
<!--  
	预览新建的连接线。
-->
	<script type="text/javascript">
		// 设置元素源端到连接线的连接点
		mxConnectionHandler.prototype.createEdgeState = function(me)
		{
			var edge = this.graph.createEdge();
			
			if (this.sourceConstraint != null && this.previous != null)
			{
				edge.style = mxConstants.STYLE_EXIT_X+'='+this.sourceConstraint.point.x+';'+
					mxConstants.STYLE_EXIT_Y+'='+this.sourceConstraint.point.y+';';
			}
			else if (this.graph.model.isEdge(me.getCell()))
			{
				var scale = this.graph.view.scale;
				var tr = this.graph.view.translate;
				var pt = new mxPoint(this.graph.snap(me.getGraphX() / scale) - tr.x,
						this.graph.snap(me.getGraphY() / scale) - tr.y);
				edge.geometry.setTerminalPoint(pt, true);
			}
			
			return this.graph.view.createState(edge);
		};
		
		// 使用鼠标右键，创建连接线
		mxConnectionHandler.prototype.isStopEvent = function(me)
		{
			return me.getState() != null || mxEvent.isRightMouseButton(me.getEvent());
		};
		
		// 更新目标终端边到边缘的连接点。
		mxConnectionHandlerUpdateCurrentState = mxConnectionHandler.prototype.updateCurrentState;
		mxConnectionHandler.prototype.updateCurrentState = function(me)
		{
			mxConnectionHandlerUpdateCurrentState.apply(this, arguments);

			if (this.edgeState != null)
			{
				this.edgeState.cell.geometry.setTerminalPoint(null, false);
			
				if (this.shape != null && this.currentState != null &&
					this.currentState.view.graph.model.isEdge(this.currentState.cell))
				{
					var scale = this.graph.view.scale;
					var tr = this.graph.view.translate;
					var pt = new mxPoint(this.graph.snap(me.getGraphX() / scale) - tr.x,
							this.graph.snap(me.getGraphY() / scale) - tr.y);
					this.edgeState.cell.geometry.setTerminalPoint(pt, false);
				}
			}
		};

		// 点到线的预览
		mxEdgeSegmentHandler.prototype.clonePreviewState = function(point, terminal)
		{
			var clone = mxEdgeHandler.prototype.clonePreviewState.apply(this, arguments);
			clone.cell = clone.cell.clone();
			
			if (this.isSource || this.isTarget)
			{
				clone.cell.geometry = clone.cell.geometry.clone();
				
				// Sets the terminal point of an edge if we're moving one of the endpoints
				if (this.graph.getModel().isEdge(clone.cell))
				{
					// TODO: Only set this if the target or source terminal is an edge
					clone.cell.geometry.setTerminalPoint(point, this.isSource);
				}
				else
				{
					clone.cell.geometry.setTerminalPoint(null, this.isSource);				
				}
			}

			return clone;
		};
	</script>
<!--  
	高亮完整的单元区域（热点）。
-->
	<script type="text/javascript">
		mxConnectionHandlerCreateMarker = mxConnectionHandler.prototype.createMarker;
		mxConnectionHandler.prototype.createMarker = function()
		{
			var marker = mxConnectionHandlerCreateMarker.apply(this, arguments);
			
			// 使用完整的区域的单元为新的连接（没有热点）
			marker.intersects = function(state, evt)
			{
				return true;
			};
			
			// 添加高亮
			mxCellHighlightHighlight = mxCellHighlight.prototype.highlight;
			marker.highlight.highlight = function(state)
			{
				if (this.state != state)
				{
					if (this.state != null)
					{
						this.state.style = this.lastStyle;
						
						// 使用当前描边宽度，如果没有定义的描边宽度形状的解决方法
						this.state.style['strokeWidth'] = this.state.style['strokeWidth'] || '1';
						this.state.style['strokeColor'] = this.state.style['strokeColor'] || 'none';
						
						if (this.state.shape != null)
						{
							this.state.view.graph.cellRenderer.configureShape(this.state);
							this.state.shape.reconfigure();
							this.state.shape.redraw();
						}
					}
					
					if (state != null)
					{
						this.lastStyle = state.style;
						state.style = mxUtils.clone(state.style);
						state.style['strokeColor'] = '#00ff00';
						state.style['strokeWidth'] = '3';
						
						if (state.shape != null)
						{
							state.view.graph.cellRenderer.configureShape(state);
							state.shape.reconfigure();
							state.shape.redraw();
						}
					}
					
					this.state = state;
				}
			};
			
			return marker;
		};
		
		mxEdgeHandlerCreateMarker = mxEdgeHandler.prototype.createMarker;
		mxEdgeHandler.prototype.createMarker = function()
		{
			var marker = mxEdgeHandlerCreateMarker.apply(this, arguments);
			
			// 重新连接时，现有的边添加高亮
			marker.highlight.highlight = this.graph.connectionHandler.marker.highlight.highlight;
			
			return marker;
		}
	</script>
<!--  
	添加椭圆形标记边到边连接。
-->
	<script type="text/javascript">
		mxGraphGetCellStyle = mxGraph.prototype.getCellStyle;
		mxGraph.prototype.getCellStyle = function(cell)
		{
			var style = mxGraphGetCellStyle.apply(this, arguments);
			
			if (style != null && this.model.isEdge(cell))
			{
				style = mxUtils.clone(style);
				
				if (this.model.isEdge(this.model.getTerminal(cell, true)))
				{
					style['startArrow'] = 'oval';
				}
		
				if (this.model.isEdge(this.model.getTerminal(cell, false)))
				{
					style['endArrow'] = 'oval';
				}
			}
			
			return style;
		};
	</script>
<!--  
	自定义的电阻形状，目前这里被忽略。
-->
	<script type="text/javascript">
		function ResistorShape() { };
		ResistorShape.prototype = new mxCylinder();
		ResistorShape.prototype.constructor = ResistorShape;
		ResistorShape.prototype.crisp = false;

		ResistorShape.prototype.redrawPath = function(path, x, y, w, h, isForeground)
		{
			var dx = w / 16;

			if (isForeground)
			{
				path.moveTo(0, h / 2);
				path.lineTo(2 * dx, h / 2);
				path.lineTo(3 * dx, 0);
				path.lineTo(5 * dx, h);
				path.lineTo(7 * dx, 0);
				path.lineTo(9 * dx, h);
				path.lineTo(11 * dx, 0);
				path.lineTo(13 * dx, h);
				path.lineTo(14 * dx, h / 2);
				path.lineTo(16 * dx, h / 2);

				path.end();
			}
		};

		mxCellRenderer.prototype.defaultShapes['resistor'] = ResistorShape;
	</script>
<!--  
	自定义的电阻形状。目前这里被忽略。
-->
	<script type="text/javascript">
	mxEdgeStyle.WireConnector = function(state, source, target, hints, result)
	{
		// 建立一个数组，所有的方式和终点
		var pts = state.absolutePoints;
		var horizontal = true;
		var hint = null;
		
		// Gets the initial connection from the source terminal or edge
		if (source != null && state.view.graph.model.isEdge(source.cell))
		{
			horizontal = state.style['sourceConstraint'] == 'horizontal';
		}
		else if (source != null)
		{
			horizontal = source.style['portConstraint'] != 'vertical';
			
			// 检查的方向的形状和旋转
			var direction = source.style[mxConstants.STYLE_DIRECTION];
			
			if (direction == 'north' || direction == 'south')
			{
				horizontal = !horizontal;
			}
		}
		
		// 添加的第一个点
		// TODO: 应沿着相连的网段
		var pt = pts[0];
		
		if (pt == null && source != null)
		{
			pt = new mxPoint(state.view.getRoutingCenterX(source), state.view.getRoutingCenterY(source));
		}
		else if (pt != null)
		{
			pt = pt.clone();
		}
		
		var first = pt;

		// 添加路径点
		if (hints != null && hints.length > 0)
		{
			// FIXME: 第一个段不可移动
			/*hint = state.view.transformControlPoint(state, hints[0]);
			mxLog.show();
			mxLog.debug(hints.length,'hints0.y='+hint.y, pt.y)
			
			if (horizontal && Math.floor(hint.y) != Math.floor(pt.y))
			{
				mxLog.show();
				mxLog.debug('add waypoint');

				pt = new mxPoint(pt.x, hint.y);
				result.push(pt);
				pt = pt.clone();
				//horizontal = !horizontal;
			}*/
			
			for (var i = 0; i < hints.length; i++)
			{
				horizontal = !horizontal;
				hint = state.view.transformControlPoint(state, hints[i]);

				if (horizontal)
				{
					if (pt.y != hint.y)
					{
						pt.y = hint.y;
						result.push(pt.clone());
					}
				}
				else if (pt.x != hint.x)
				{
					pt.x = hint.x;
					result.push(pt.clone());
				}
			}
		}
		else
		{
			hint = pt;
		}

		// 添加的最后一个点
		pt = pts[pts.length - 1];

		// TODO: 应沿着相连的网段
		if (pt == null && target != null)
		{
			pt = new mxPoint(state.view.getRoutingCenterX(target), state.view.getRoutingCenterY(target));
		}

		if (horizontal)
		{
			if (pt.y != hint.y && first.x != pt.x)
			{
				result.push(new mxPoint(pt.x, hint.y));
			}
		}
		else if (pt.x != hint.x && first.y != pt.y)
		{
			result.push(new mxPoint(hint.x, pt.y));
		}
	};
	
	mxStyleRegistry.putValue('wireEdgeStyle', mxEdgeStyle.WireConnector);
	
	// 该连接器需要的MX边缘片段的处理程序
	mxGraphCreateHandler = mxGraph.prototype.createHandler;
	mxGraph.prototype.createHandler = function(state)
	{
		var result = null;
		
		if (state != null)
		{
			if (this.model.isEdge(state.cell))
			{
				var style = this.view.getEdgeStyle(state);
				
				if (style == mxEdgeStyle.WireConnector)
				{
					return new mxEdgeSegmentHandler(state);
				}
			}
		}
		
		return mxGraphCreateHandler.apply(this, arguments);
	};
	</script>
</head>
<!-- 页面载入后启动程序. -->
<body onload="main(document.getElementById('graphContainer'))">
	<div id="graphContainer"
		style="overflow:auto;position:relative;width:800px;height:600px;border:1px solid gray;background:url('images/wires-grid.gif');background-position:-1px 0px;cursor:crosshair;">
	</div>
</body>
</html>

 

 

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