Method to obtain page setting information (margins, paper size, output direction) from BIRT report file_html/css_WEB-ITnose

When printing a report, especially a copy-printed report, the page setting information is very important, such as page margins, paper size, output direction, etc., and the relevant parameters of each report may be different, so the relevant parameters are from Obtaining it from specific reports is a very normal and reasonable idea.

If BIRT is used as a report development tool, the report designer is responsible for the production of the report, and the BIRT runtime is responsible for processing the report file. For the browser, the BIRT back-end output is a web page and does not include page settings. For related information, the browser has its own print setting options and will not read them from the web page. However, the report designer provides a setting interface for page setting information when designing the report. Therefore, we need to manually write code through the runtime API to get the page settings from the specific report. Obtain the page setting information from BIRT, and then pass the parameters to the printer through other methods (operating the printer is beyond the scope of this article). This article provides relevant sample code through research on the source code of BIRT.

The page setting information of the BIRT report designer is reflected in the properties panel corresponding to the home page tab. I won’t go into details here. Just go to the code:

IReportEngine birtEngine = ...;Map moduleOptions = new HashMap();moduleOptions.put(IModuleOption.RESOURCE_FOLDER_KEY,sc.getRealPath("/"));IReportRunnable runnable = birtEngine.openReportDesign(reportFileName,null,moduleOptions);IMasterPage  simpleMasterPage = runnable.getDesignInstance().getReport().getMasterPage("Simple MasterPage");String pageType =(String) simpleMasterPage.getUserProperty("type");//纸张类型Double height = 0.0;Double width =0.0;//如果是自定义纸张类型，需要获取纸张的宽和高if("custom".equalsIgnoreCase(pageType)){    DimensionValue heightDV  = (DimensionValue) simpleMasterPage.getUserProperty("height");    DimensionValue widthDV  = (DimensionValue) simpleMasterPage.getUserProperty("width");    height = heightDV.getMeasure();    width  = widthDV.getMeasure();}String orientation = (String) simpleMasterPage.getUserProperty("orientation");//打印输出方向 landscape：横向，portrait：纵向DimensionValue topMarginDV = (DimensionValue)simpleMasterPage.getUserProperty("topMargin");double topMargin = topMarginDV.getMeasure();//上边距String unit = topMarginDV.getUnits();//单位

This There is a strange place in it, that is, there is a name in the property editor of the homepage. This name can be modified. The default is Simple MasterPage. If you want to obtain the configuration information of this page, the getMasterPage method also needs to pass this name in as a parameter. This is rather strange. There is only one page configuration plan. What is the use of this name?