分享基于silverlight的仿“百度文库”的文档控件

通用的FlashPaper支持Word/Excel/PDF,到时对于Silverlight的XPS的文档支持问题比较多，本控件提供了一个可视化的XPS文档展示，提供放大缩小/打印/搜索/分页等功能，主要整合了开源的Document Toolkit。

 

1. 使用Document Toolkit，DocumentDataSource提供数据源，PageNvaigator提供分页 ：

 
  < 
  doc:DocumentDataSource  
  x:Name 
  ="dataSource" 
  /> 
  
 
  
         
  < 
  doc:DocumentViewer  
  Grid.Row 
  ="1" 
   x:Name 
  ="viewer" 
   DocumentDataSource 
  =" 
  {Binding ElementName=dataSource} 
  " 
   ViewMode 
  =" 
  {Binding SelectedViewMode, ElementName=viewModePicker} 
  " 
   BorderBrush 
  ="#9fa9a4" 
   BorderThickness 
  ="1" 
  /> 
  
 
  
         
  < 
  doc:PageNavigator  
  x:Name 
  ="navigator" 
   HorizontalAlignment 
  ="Center" 
   
                    PageCount 
  =" 
  {Binding PageCount, ElementName=viewer} 
  " 
  
                    PageIndex 
  =" 
  {Binding PageIndex, ElementName=viewer, Mode=TwoWay} 
  " 
  
                     
  /> 
  
                 
  
         
  < 
  doc:ViewModePicker  
  Grid.Column 
  ="1" 
   x:Name 
  ="viewModePicker" 
   Visibility 
  ="Collapsed" 
  /> 
 

 

2. WebPackageReader读取本地xps或远程xps文件作为数据源

    DotNetZipPackageReader 根据分页延迟加载文档

 
  // 
   loads the sample XPS document from the web 
  
             
  var url =  
  string.Format( 
  " 
  /DocumentService.ashx?id={0} 
  ", HtmlPage.Document.GetElementById( 
  " 
  documentId 
  ").GetProperty( 
  " 
  value 
  ")); 
  
            webClient.OpenReadAsync( 
  new Uri(HtmlPage.Document.DocumentUri, url)); 
  
 
  
             
  var reader =  
  new WebPackageReader( 
  new Uri(HtmlPage.Document.DocumentUri, url +  
  " 
  &part= 
  ")); 
  
             
  this.dataSource.PackageReader = reader; 
  
             
  var xpsClient =  
  new XpsClient(); 
  
            xpsClient.LoadXpsDocumentAsync(reader); 
 

 

3. 服务端根据请求的文件ID和当前页码返回指定的文件流

 
  private  
  void Response(HttpContext context,  
  string xpsFileName,  
  string partName) 
  
        { 
  
             
  using (FileStream stream = File.OpenRead(xpsFileName)) 
  
            { 
  
                ZipFile file =  
  new ZipFile(stream); 
  
                ZipEntry entry = file.GetEntry(partName); 
  
                 
  if (entry !=  
  null) 
  
                { 
  
                     
  using (Stream entryStream = file.GetInputStream(entry)) 
  
                    { 
  
                         
  // 
   TODO: set mime-type as defined in XPS package 
  
                        context.Response.ContentType =  
  " 
  application/octet-stream 
  "; 
  
                         
  byte[] buffer =  
  new  
  byte[ 
  2 <<  
  14];     
  // 
   write blocks of 32768 bytes 
  
                         
  int read; 
  
                         
  while ((read = entryStream.Read(buffer,  
  0, buffer.Length)) >  
  0) 
  
                        { 
  
                            context.Response.OutputStream.Write(buffer,  
  0, read); 
  
                        } 
  
                    } 
  
                } 
  
                 
  else 
  
                { 
  
                     
  // 
   return 404 Not Found 
  
                    context.Response.StatusCode = ( 
  int)HttpStatusCode.NotFound; 
  
                } 
  
            } 
  
 
  
        } 
 

 

4. 源代码下载

 https://199.47.216.171/u/10032723/DocumentToolkit.rar

 

5. 在线预览

 

http://rapidsl2.guozili.25u.com/  ( admin/admin  点左边菜单 控件展示 - 文档查看器)

 

 6. 截图