Flex提供了一个特殊的类 FlexPrintJob 来打印flex对象.
FlexPrintJob可以是用于打印一个或多个Flex对象,例如Form或VBox容器.
FlexPrintJob打印对象及其包含的所有对象.
对象可以是显示界面的全部或部分.
对象可以是组件专门用于打印的格式数据.
FlexPrintJob类允许您缩放输出以适合页面.
FlexPrintJob类自动使用多个页面来打印不适合单个页面的对象.
FlexPrintJob类导致操作系统显示"打印"对话框.没有一些用户操作就无法打印.
您打印通过准备和发送打印作业来输出.让我们创建一个FlexPrintJob类的实例
var printJob:FlexPrintJob = new FlexPrintJob();
开始打印作业
printJob.start();
Flex将导致操作系统显示"打印"对话框.将一个或多个对象添加到打印作业并指定如何缩放它们
printJob.addObject(myObject,FlexPrintJobScaleType.MATCH_WIDTH);
每个对象都在新页面上开始.将打印作业发送到打印机
printJob.send();
步骤 | 描述 |
---|---|
1 | 在包 com下创建名为 HelloWorld 的项目.it1352.client ,如 Flex - 创建应用程序章节中所述. |
2 | 修改 HelloWorld.mxml ,如下所述.保持其余文件不变. |
3 | 编译并运行应用程序以确保业务逻辑按照要求运行. |
以下是内容修改后的mxml文件 src/com.it1352/HelloWorld.mxml.
<?xml version = "1.0" encoding = "utf-8"?> <s:Application xmlns:fx = "http://ns.adobe.com/mxml/2009" xmlns:s = "library://ns.adobe.com/flex/spark" xmlns:mx = "library://ns.adobe.com/flex/mx" width = "100%" height = "100%" minWidth = "500" minHeight = "500" initialize = "application_initializeHandler(event)"> <fx:Style source = "/com/IT屋/client/Style.css" /> <fx:Script> <![CDATA[ import mx.controls.Alert; import mx.events.FlexEvent; import mx.printing.FlexPrintJob; import mx.printing.FlexPrintJobScaleType; protected function btnClickMe_clickHandler(event:MouseEvent):void { // Create an instance of the FlexPrintJob class. var printJob:FlexPrintJob = new FlexPrintJob(); // Start the print job. if (printJob.start() != true) return; // Add the object to print. Do not scale it. printJob.addObject(myDataGrid, FlexPrintJobScaleType.NONE); // Send the job to the printer. printJob.send(); } protected function application_initializeHandler(event:FlexEvent):void { lblHeader.text = "My Hello World Application"; } ]]> </fx:Script> <s:BorderContainer width = "500" height = "500" id = "mainContainer" styleName = "container"> <s:VGroup width = "100%" height = "100%" gap = "50" horizontalAlign = "center" verticalAlign = "middle"> <s:Label id = "lblHeader" fontSize = "40" color = "0x777777" styleName = "heading" /> <mx:DataGrid id = "myDataGrid" width = "300"> <mx:dataProvider> <fx:Object Product = "Flex" Code = "1000" /> <fx:Object Product = "GWT" Code = "2000" /> <fx:Object Product = "JAVA" Code = "3000" /> <fx:Object Product = "JUnit" Code = "4000" /> </mx:dataProvider> </mx:DataGrid> <s:Button label = "Print Me!" id = "btnClickMe" click = "btnClickMe_clickHandler(event)" styleName = "button" /> </s:VGroup> </s:BorderContainer> </s:Application>
完成所有更改后,让我们按照正常模式编译并运行应用程序,就像我们在Flex - 创建应用程序章节.如果您的应用程序一切正常,它将产生以下结果:
点击"打印我"按钮,您可以看到打印输出数据网格如下所示.