MyReport：DataGrid的打印和打印预览

本文说明怎样使用MyReport来实现Flex DataGrid组件的自己主动化打印预览和打印功能。

实现代码

<?

xmlversion="1.0" encoding="utf-8"?>

<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml"

               width="100%"height="100%" fontSize="24" horizontalAlign="center" paddingBottom="40"

               paddingLeft="40" paddingRight="40" paddingTop="40" creationComplete="Init()">

       <mx:Script>

              <![CDATA[

                     import mx.collections.ArrayCollection;

                    

                     import myreport.ReportEngine;

                     import myreport.ReportViewer;

                     import myreport.data.report.CaptionCellSetting;

                     import myreport.data.report.CaptionRowSetting;

                     import myreport.data.report.ReportSettings;

                     import myreport.data.report.TableCellSetting;

                     import myreport.data.report.TableColumnSetting;

                     import myreport.data.report.TableRowSetting;

                    

                     private function Init():void

                     {

                           //初始化时设置DataGrid的数据源

                           _Grid.dataProvider = GetTableData();

                     }

                     private function GetTableData():ArrayCollection

                     {

                           var list:ArrayCollection = new ArrayCollection();

                           for (var i:int =0; i < 25; i++)

                           {

                                  list.addItem({ID: i, 名称: "商品信息XXX 规格XXX 型号XXX", 数量: i+1, 金额: (i+1)*10, 日期:newDate()});

                           }

                          

                           return list;

                     }            

                    

                     private function PreviewReport():void

                     {

                           //预览

                           var style:ReportSettings= DataGridToMyReport(_Grid, "演示样例：DataGridToMyReport");

                           myreport.ReportViewer.Instance.Show(new XML(style.ToXML()), style.TableData, style.ParameterData);

                     }

                    

                     private function PrintReport():void

                     {

                           //直接打印

                           var style:ReportSettings= DataGridToMyReport(_Grid, "演示样例：DataGridToMyReport");

                           myreport.ReportEngine.PrintAsync(new XML(style.ToXML()), style.TableData, style.ParameterData);

                     }

                     /**

                      *

                      * 封装的转换方法。实现DataGid转成报表样式

                      *

                      * @param grid: 表格控件(传入前确保表格控件已经设置数据源)

                      * @param title：报表标题

                      */

                     private function DataGridToMyReport(grid:DataGrid,title:String):ReportSettings

                     {

                           var style:ReportSettings = new ReportSettings();

                           //数据源

                           style.TableData = grid.dataProvideras ArrayCollection;

                           var params:Dictionary = newDictionary();

                           params.Title = title;

                           style.ParameterData = params;

                          

                           //报表样式

                           style.TableHeaderRepeat = true;//表格头反复

                           style.TableFooterRepeat = true;//表格尾反复

                           style.AutoWidth = true;//报表宽度自己主动递增

                           style.PageByColumn = true;//分栏打印

                           style.SetUnit("px");

                          

                           //标题

                           var captionRow:CaptionRowSetting = new CaptionRowSetting();

                           var caption:CaptionCellSetting = new CaptionCellSetting();

                           caption.Width = style.ClientWidth;

                           caption.Style.FontBold = true;

                           caption.Style.FontSize = 16;

                           caption.Style.TextAlign = "center";

                           caption.Value = "=@Title";

                           captionRow.CaptionCellSettings.push(caption);

                           style.PageHeaderSettings.push(captionRow);

                          

                           //表格

                           var headerRow:TableRowSetting = new TableRowSetting();

                           var contentRow:TableRowSetting = new TableRowSetting();

                           var gridColumns:Array = grid.columns;

                           for each(var gridCol:DataGridColumnin gridColumns)

                           {

                                  if(!gridCol.visible)

                                         continue;

                                  //加入列

                                  var column:TableColumnSetting = new TableColumnSetting();

                                  column.Width = gridCol.width;

                                  style.TableColumnSettings.push(column);

                                 

                                  //加入表格头单元格

                                  var headerCell:TableCellSetting = new TableCellSetting();

                                  headerCell.Style.FontBold = true;

                                  headerCell.Style.TextAlign = "center";

                                  headerCell.Value = gridCol.headerText;

                                  headerRow.TableCellSettings.push(headerCell);

                                 

                                  //加入表格主体单元格

                                  var contentCell:TableCellSetting = new TableCellSetting();

                                  contentCell.Value = "=#" + gridCol.dataField;

                                  contentRow.TableCellSettings.push(contentCell);

                           }

                           style.TableHeaderSettings.push(headerRow);

                           style.TableDetailSettings.push(contentRow);

                           return style;

                     }

              ]]>

       </mx:Script>

       <mx:Label text="演示怎样用程序动态生成报表样式，实现DataGrid to MyReport。

" width="100%" textAlign="center"/>

       <mx:Button label="打印预览"click="PreviewReport()"/>

       <mx:Button label="直接打印"click="PrintReport()"/>

       <mx:DataGridid="_Grid" width="600"height="100%" horizontalScrollPolicy="on">

              <mx:columns>

                     <mx:DataGridColumn dataField="ID" headerText="ID"width="56"/>

                     <mx:DataGridColumn dataField="名称" headerText="名称"width="200"/>

                     <mx:DataGridColumn dataField="数量" headerText="数量"width="100"/>

                     <mx:DataGridColumn dataField="金额" headerText="金额"width="100"/>

                     <mx:DataGridColumn dataField="日期" headerText="日期"width="200"/>

              </mx:columns>

       </mx:DataGrid>

</mx:VBox>

效果图

                            

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