Aspose.Words 15.3 正式發(fā)布。此次更新內(nèi)容有131項，包含功能改進和漏洞修復。其中最顯著的內(nèi)容有：

• 關于處理 RTL text, text boxes, cell vertical alignment及其他的排版引擎的改進。
• 改進了所有文件格式的導入和導出。
• 優(yōu)化了某些情形下輸出PDF文檔的尺寸大小。
• 在整個周期內(nèi)Document.WarningCallback 屬性都可以向你發(fā)送格式化報告。
• 字段現(xiàn)在更新在內(nèi)部DrawingML形狀。
• ShapeRenderer.OpaqueBoundsInPoints返回"real"形狀邊界。
• 改進了填充、3D文字效果和其他東西的渲染。
• 目前支持條形碼字段了，您可以添加一個自定義條碼生成器。

引入Public BarCode Generation API

支持 DISPLAYBARCODE字段。 Aspose.Words API新引入下列字符實體:

• 添加IBarcodeGenerator界面
• 添加BarcodeParameters類
• 添加FieldOptions.BarcodeGenerator屬性

使用案例：

點擊查看 “DISPLAYBARCODE字段的自定義條碼圖像生成 DISPLAYBARCODE” 功能: 

InsertDocument method添加到 DocumentBuilder Class

The following new method inserts content of the document into the current position of DocumentBuilder’s cursor 下列新類函數(shù)插入文檔內(nèi)容到DocumentBuilder光標的當前位置。

  public Node InsertDocument(Document, ImportFormatMode);  

使用案例：

點擊查看 “DISPLAYBARCODE字段的自定義條碼圖像生成 DISPLAYBARCODE” 功能: 

添加DocumentBase.WarningCallback屬性

文檔可以在任何周期發(fā)出警告消息 。所以為了收取所有的警告，DocumentBase class.添加了一個新的屬性。

  public IWarningCallback WarningCallback  

與此同時 time SaveOptions.WarningCallback被淘汰了，因此就不要在新的代碼中出現(xiàn)了。

OpaqueBoundsInPoints 屬性和GetOpaqueRectangleInPixels 類函數(shù)都添加到ShapeRenderer 類

OpaqueBoundsInPoints屬性和類函數(shù) GetOpaqueRectangleInPixels 添加到ShapeRenderer類。這樣就可以恰當?shù)墨@取圖形的不透明邊界。新的工作機制如下：

  public static void RenderNode(Node node, string filePath, ImageSaveOptions imageOptions)  {      
// This code is taken from public API samples of AW.      
// Previously to find opaque bounds of the shape the function      
// that checks every pixel of the rendered image was used.      
// For now opaque bounds is got using ShapeRenderer.GetOpaqueRectangleInPixels method.        
// If no image options are supplied, create default options.      
if (imageOptions == null)         
 imageOptions = new ImageSaveOptions(FileFormatUtil.ExtensionToSaveFormat(Path.GetExtension(filePath)));        
// Store the paper color to be used on the final image and change to transparent.      
// This will cause any content around the rendered node to be removed later on.      
Color savePaperColor = imageOptions.PaperColor;      
imageOptions.PaperColor = Color.Transparent;        
// There a bug which affects the cache of a cloned node. 
To avoid this we instead clone the entire document including all nodes,      
// find the matching node in the cloned document and render that instead.      
Document doc = (Document)node.Document.Clone(true);      
node = doc.GetChild(NodeType.Any, node.Document.GetChildNodes(NodeType.Any, true).IndexOf(node), true);        
// Create a temporary shape to store the target node in. This shape will be rendered to retrieve      
// the rendered content of the node.      
Shape shape = new Shape(doc, ShapeType.TextBox);      
Section parentSection = (Section)node.GetAncestor(NodeType.Section);        
// Assume that the node cannot be larger than the page in size.      
shape.Width = parentSection.PageSetup.PageWidth;      
shape.Height = parentSection.PageSetup.PageHeight;      
shape.FillColor = Color.Transparent; 
// We must make the shape and paper color transparent.        
// Don't draw a surronding line on the shape.      shape.Stroked = false;        
// Move up through the DOM until we find node which is suitable to insert 
into a Shape (a node with a parent can contain paragraph, tables the same as a shape).      
// Each parent node is cloned on the way up so even a descendant node passed to this method can be rendered.      
// Since we are working with the actual nodes of the document we need to clone the target node into the temporary shape.     
 Node currentNode = node;     
 while (!(currentNode.ParentNode is InlineStory || currentNode.ParentNode is Story || currentNode.ParentNode is ShapeBase))     
 {          CompositeNode parent = (CompositeNode)currentNode.ParentNode.Clone(false);         
 currentNode = currentNode.ParentNode;          
parent.AppendChild(node.Clone(true));          
node = parent; // Store this new node to be inserted into the shape.      }        
// We must add the shape to the document tree to have it rendered.     
 shape.AppendChild(node.Clone(true));      
parentSection.Body.FirstParagraph.AppendChild(shape);        
// Render the shape to stream so we can take advantage of the effects of the ImageSaveOptions class.      
// Retrieve the rendered image and remove the shape from the document.     
 MemoryStream stream = new MemoryStream();      
ShapeRenderer renderer = shape.GetShapeRenderer();     
 renderer.Save(stream, imageOptions);      shape.Remove();       
 Rectangle crop = renderer.GetOpaqueRectangleInPixels(imageOptions.Scale,
 imageOptions.Resolution);        
// Load the image into a new bitmap.      
using (Bitmap renderedImage = new Bitmap(stream))  
    {          Bitmap croppedImage = new Bitmap(crop.Width, crop.Height);         
 croppedImage.SetResolution(imageOptions.Resolution, imageOptions.Resolution);            
// Create the final image with the proper background color.         
 using (Graphics g = Graphics.FromImage(croppedImage))        
  {              g.Clear(savePaperColor);            
  g.DrawImage(renderedImage, new Rectangle(0, 0, croppedImage.Width,
 croppedImage.Height), crop.X, crop.Y, crop.Width, crop.Height, 
GraphicsUnit.Pixel);                croppedImage.Save(filePath);          }      }  }