Zh/Documentation/DevGuide/Drawings/Example: Creating a Simple Organizational Chart

下面这个例子创建了一个简单的两层组织机构图,它由5个矩形框图形和4个连接器组成,4个连接器将第2层的矩形框和第1层的矩形框连接起来.

例子中的函数方法getRemoteServiceManager()被用来连接office服务.我们先讨论这个方法.首先是加载空的绘图文挡,并且检索第1个绘图页查找它的页面规格.然后,准备机构数据和计算图形尺寸.整个组织结构图的图形对象在 一个for循环中被加载,再为第2层的所有图形增加连接器.

   public void drawOrganigram() throws java.lang.Exception {
       xRemoteServiceManager = this.getRemoteServiceManager(
               "uno:socket,host=localhost,port=2083;urp;StarOffice.ServiceManager");
       Object desktop = xRemoteServiceManager.createInstanceWithContext(
               "com.sun.star.frame.Desktop", xRemoteContext);
       XComponentLoader xComponentLoader = (XComponentLoader) UnoRuntime.queryInterface(
               XComponentLoader.class, desktop);
       PropertyValue[] loadProps = new PropertyValue[0];
       XComponent xDrawComponent = xComponentLoader.loadComponentFromURL(
               "private:factory/sdraw", "_blank", 0, loadProps);
       // 通过索引号获得绘图页对象
       com.sun.star.drawing.XDrawPagesSupplier xDrawPagesSupplier =
               (com.sun.star.drawing.XDrawPagesSupplier) UnoRuntime.queryInterface(
               com.sun.star.drawing.XDrawPagesSupplier.class, xDrawComponent);
       com.sun.star.drawing.XDrawPages xDrawPages = xDrawPagesSupplier.getDrawPages();
       Object drawPage = xDrawPages.getByIndex(0);
       // 得到绘图页对象的页面的绘图接口
       com.sun.star.drawing.XDrawPage xDrawPage = (com.sun.star.drawing.XDrawPage) UnoRuntime.queryInterface(
               com.sun.star.drawing.XDrawPage.class, drawPage);
       // 通过页面的绘图接口得到页面的属性
       com.sun.star.beans.XPropertySet xPageProps = (com.sun.star.beans.XPropertySet) UnoRuntime.queryInterface(
               com.sun.star.beans.XPropertySet.class, xDrawPage);
       int pageWidth = AnyConverter.toInt(xPageProps.getPropertyValue("Width"));
       int pageHeight = AnyConverter.toInt(xPageProps.getPropertyValue("Height"));
       int pageBorderTop = AnyConverter.toInt(xPageProps.getPropertyValue("BorderTop"));
       int pageBorderLeft = AnyConverter.toInt(xPageProps.getPropertyValue("BorderLeft"));
       int pageBorderRight = AnyConverter.toInt(xPageProps.getPropertyValue("BorderRight"));
       int drawWidth = pageWidth - pageBorderLeft - pageBorderRight;
       int horCenter = pageBorderLeft + drawWidth / 2;
       // 组织机构的内容,用一个2维数组存放.维度1表示层,维度2表示层中的第几个元素.
       String[][] orgUnits = new String[2][4];
       orgUnits[0][0] = "Management"; // level 0
       orgUnits[1][0] = "Production"; // level 1
       orgUnits[1][1] = "Purchasing"; // level 1
       orgUnits[1][2] = "IT Services"; // level 1
       orgUnits[1][3] = "Sales"; // level 1
       int[] levelCount = {1, 4};  // 每层的元素个数
       // 计算图形的大小和位置
       int horSpace = 300;
       int verSpace = 3000;
       int shapeWidth = (drawWidth - (levelCount[1] - 1) * horSpace) / levelCount[1];   // 图形的宽
       int shapeHeight = pageHeight / 20;                                               // 图形的高
       int shapeX = pageWidth / 2 - shapeWidth / 2;
       int levelY = 0;
       // 用于存放根图形的对象
       com.sun.star.drawing.XShape xStartShape = null;
       // 取得文档工厂
       com.sun.star.lang.XMultiServiceFactory xDocumentFactory = (com.sun.star.lang.XMultiServiceFactory) UnoRuntime.queryInterface(
               com.sun.star.lang.XMultiServiceFactory.class, xDrawComponent);
       // 绘制图形和连接器 
       for (int level = 0; level <= 1; level++) {
           // 计算图形的Y坐标
           levelY = pageBorderTop + 2000 + level * (shapeHeight + verSpace);
           for (int i = levelCount[level] - 1; i > -1; i--) {
               // 计算图形的X坐标
               shapeX = horCenter
                       - (levelCount[level] * shapeWidth + (levelCount[level] - 1) * horSpace) / 2
                       + i * shapeWidth + i * horSpace;
               // 创建图形对象
               Object shape = xDocumentFactory.createInstance("com.sun.star.drawing.RectangleShape");
               // 获得图形对象的绘图接口
               com.sun.star.drawing.XShape xShape = (com.sun.star.drawing.XShape) UnoRuntime.queryInterface(
                       com.sun.star.drawing.XShape.class, shape);
               // 指定图形的位置
               xShape.setPosition(new com.sun.star.awt.Point(shapeX, levelY));
               // 指定图形的大小
               xShape.setSize(new com.sun.star.awt.Size(shapeWidth, shapeHeight));
               // 将图形加入到绘图页
               xDrawPage.add(xShape);
               // 绘制文本
               com.sun.star.text.XText xText = (com.sun.star.text.XText) UnoRuntime.queryInterface(
                       com.sun.star.text.XText.class, xShape);
               xText.setString(orgUnits[level][i]);
               // 记录根图形,用于绘制连接器
               if (level == 0 && i == 0) {
                   xStartShape = xShape;
               }
               // 绘制连接器
               if (level == 1) {
                   Object connector = xDocumentFactory.createInstance(
                           "com.sun.star.drawing.ConnectorShape");
                   com.sun.star.drawing.XShape xConnector = (com.sun.star.drawing.XShape) UnoRuntime.queryInterface(
                           com.sun.star.drawing.XShape.class, connector);
                   xDrawPage.add(xConnector);
                   com.sun.star.beans.XPropertySet xConnectorProps = (com.sun.star.beans.XPropertySet) UnoRuntime.queryInterface(
                           com.sun.star.beans.XPropertySet.class, connector);
                   xConnectorProps.setPropertyValue("StartShape", xStartShape);
                   xConnectorProps.setPropertyValue("EndShape", xShape);
                   // glue point positions: 0=top 1=left 2=bottom 3=right
                   xConnectorProps.setPropertyValue("StartGluePointIndex", new Integer(2));
                   xConnectorProps.setPropertyValue("EndGluePointIndex", new Integer(0));
               }
           }
       }
   }