/// <summary>
/// 它创建了一个新的空SVG文档，其中只包含根元素。
/// 如果当前文档存在，则会将其销毁。
/// </summary>
public SVGRoot CreateNewDocument()
{
if (m_root != null)
{
m_root = null;
m_nNextId = 1;
m_elements.Clear();
}
m_root = new SVGRoot(this);
m_root.setInternalId(m_nNextId++);
m_elements.Add(m_root.getInternalId(), m_root);
m_sXmlDeclaration = "<?xml version=\"1.0\" standalone=\"no\"?>";
m_sXmlDocType =
"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\" \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">";
m_root.SetAttributeValue(SVGAttribute._SvgAttribute.attrSvg_XmlNs, "http://www.w3.org/2000/svg");
m_root.SetAttributeValue(SVGAttribute._SvgAttribute.attrSvg_Version, "1.1");
return(m_root);
}
/// <summary>
/// 它创建一个从文件读取的SVG文档。
/// 如果当前文档存在，则会将其销毁。
/// </summary>
public bool LoadFromFile(XmlReader reader)
{
SVGErr err = new SVGErr("SvgDoc", "LoadFromFile");
err.LogParameter("sFilename", reader.BaseURI);
if (m_root != null)
{
m_root = null;
m_nNextId = 1;
m_elements.Clear();
}
bool bResult = true;
try
{
string tmp;
SVGUnit eleParent = null;
SVGUnit eleLast = null;
try
{
// 分析文件并显示每个节点。
while (reader.Read() && bResult)
{
switch (reader.NodeType)
{
case XmlNodeType.Attribute:
tmp = reader.Name;
tmp = reader.Value;
break;
case XmlNodeType.Element: //找到一个标签
{
SVGUnit ele = AddElement(eleParent, reader.Name, ref eleLast);
if (ele == null)
{
err.Log("Svg element cannot be added. Name: " + reader.Name,
SVGErr._LogPriority.Warning);
bResult = false;
}
else
{
eleParent = ele;
if (reader.IsEmptyElement)
{
if (eleParent != null)
{
eleParent = eleParent.getParent();
}
}
bool bLoop = reader.MoveToFirstAttribute();
while (bLoop) //直到读完属性为止
{
if (!ele.SetAttributeValue(reader.Name, reader.Value))
{
err.Log("Read AttributeValue : " + reader.Value, SVGErr._LogPriority.Warning);
}
bLoop = reader.MoveToNextAttribute();
}
}
}
break;
case XmlNodeType.Text:
if (eleParent != null)
{
eleParent.setElementValue(reader.Value);
}
break;
case XmlNodeType.CDATA:
err.Log("Unexpected item: " + reader.Value, SVGErr._LogPriority.Warning);
break;
case XmlNodeType.ProcessingInstruction:
err.Log("Unexpected item: " + reader.Value, SVGErr._LogPriority.Warning);
break;
case XmlNodeType.Comment:
err.Log("Unexpected item: " + reader.Value, SVGErr._LogPriority.Warning);
break;
case XmlNodeType.XmlDeclaration:
m_sXmlDeclaration = "<?xml " + reader.Value + "?>";
break;
case XmlNodeType.Document:
err.Log("Unexpected item: " + reader.Value, SVGErr._LogPriority.Warning);
break;
case XmlNodeType.DocumentType:
{
string sDTD1;
string sDTD2;
sDTD1 = reader.GetAttribute("PUBLIC");
sDTD2 = reader.GetAttribute("SYSTEM");
m_sXmlDocType = "<!DOCTYPE svg PUBLIC \"" + sDTD1 + "\" \"" + sDTD2 + "\">";
}
break;
case XmlNodeType.EntityReference:
err.Log("Unexpected item: " + reader.Value, SVGErr._LogPriority.Warning);
break;
case XmlNodeType.EndElement:
if (eleParent != null)
{
eleParent = eleParent.getParent();
eleLast = null;
if (eleParent != null)
{
var templast = eleParent.getChild();
while (templast != null)
{
eleLast = templast;
templast = templast.getNext();
}
}
}
break;
} // switch
} // while
} // read try
catch (XmlException xmle)
{
err.LogException(xmle);
err.LogParameter("Line Number", xmle.LineNumber.ToString());
err.LogParameter("Line Position", xmle.LinePosition.ToString());
bResult = false;
}
catch (Exception e)
{
err.LogException(e);
bResult = false;
}
finally
{
reader.Close();
}
}
catch
{
err.LogUnhandledException();
bResult = false;
}
err.LogEnd(bResult);
return(bResult);
}
/// <summary>
/// 它根据提供的元素名称创建一个新元素
/// 并将新元素添加为给定父元素的最后一个子元素。
/// </summary>
public SVGUnit AddElement(SVGUnit parent, string sName, ref SVGUnit last)
{
SVGUnit eleToReturn = null;
if (sName == "svg")
{
m_root = new SVGRoot(this);
m_root.setInternalId(m_nNextId++);
m_elements.Add(m_root.getInternalId(), m_root);
eleToReturn = m_root;
}
else if (sName == "desc")
{
eleToReturn = AddDesc(parent, ref last);
}
else if (sName == "text")
{
eleToReturn = AddText(parent, ref last);
}
else if (sName == "g")//检查元素添加一个组
{
eleToReturn = AddGroup(parent, ref last);
}
else if (sName == "rect")
{
eleToReturn = AddRect(parent, ref last);
}
else if (sName == "circle")
{
eleToReturn = AddCircle(parent, ref last);
}
else if (sName == "ellipse")
{
eleToReturn = AddEllipse(parent, ref last);
}
else if (sName == "line")
{
eleToReturn = AddLine(parent, ref last);
}
else if (sName == "path")
{
eleToReturn = AddPath(parent, ref last);
}
else if (sName == "polygon")
{
eleToReturn = AddPolygon(parent, ref last);
}
else if (sName == "image")
{
eleToReturn = AddImage(parent, ref last);
}
else if (sName == "polyline")
{
eleToReturn = AddPolyline(parent, ref last);
}
else if (sName == "animate")
{
eleToReturn = AddAnimate(parent, ref last);
}
else if (sName == "devicePort")
{
eleToReturn = AddDevicePort(parent, ref last);
}
else if (sName == "defs")
{
eleToReturn = AddDefs(parent, ref last);
}
else if (sName == "symbol")
{
eleToReturn = AddSymbols(parent, ref last);
}
else if (sName == "use")
{
eleToReturn = AddUse(parent, ref last);
}
else if (sName == "metaData")
{
eleToReturn = AddMetaData(parent, ref last);
}
else if (sName == "cge:CN_Ref")
{
eleToReturn = AddCN_Ref(parent, ref last);
}
else
{
if (parent != null)
{
eleToReturn = AddUnsupported(parent, sName, ref last);
}
}
return(eleToReturn);
}
/// <summary>
/// 构造器
/// </summary>
public SVGWord()
{
m_root = null;
m_nNextId = 1;
m_elements = new Hashtable();
}