private bool DeleteElement(SVGUnit ele, bool bDeleteFromParent)
{
SVGErr err = new SVGErr("SvgDoc", "DeleteElement");
if (ele == null)
{
err.LogEnd(false);
return(false);
}
SVGUnit parent = ele.getParent();
if (parent == null)
{
err.Log("root node cannot be delete!", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
if (ele.getPrevious() != null)
{
ele.getPrevious().setNext(ele.getNext());
}
if (ele.getNext() != null)
{
ele.getNext().setPrevious(ele.getPrevious());
}
if (bDeleteFromParent)
{
if (IsFirstChild(ele))
{
ele.getParent().setChild(ele.getNext());
}
}
SVGUnit child = ele.getChild();
while (child != null)
{
DeleteElement(child, false);
child = child.getNext();
}
m_elements.Remove(ele.getInternalId());
err.Log(ele.ElementInfo(), SVGErr._LogPriority.Info);
err.LogEnd(true);
return(true);
}
private SVGUnit GetLastSibling(SVGUnit ele)
{
if (ele == null)
{
return(null);
}
SVGUnit last = ele;
while (last.getNext() != null)
{
last = last.getNext();
}
return(last);
}
/// <summary>
/// 它将元素在树层次结构中向上移动一级。
/// </summary>
public bool ElementLevelUp(SVGUnit ele)
{
SVGErr err = new SVGErr("SvgDoc", "ElementLevelUp");
err.Log("Element to move " + ele.ElementInfo(), SVGErr._LogPriority.Info);
SVGUnit parent = ele.getParent();
if (parent == null)
{
err.Log("Root node cannot be moved", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
if (parent.getParent() == null)
{
err.Log("An element cannot be moved up to the root", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
SVGUnit nxt = ele.getNext();
// the first child of the parent became the next
parent.setChild(nxt);
if (nxt != null)
{
nxt.setPrevious(null);
}
// get the last sibling of the parent
SVGUnit last = GetLastSibling(parent);
if (last != null)
{
last.setNext(ele);
}
ele.setParent(parent.getParent());
ele.setPrevious(last);
ele.setNext(null);
return(true);
}
/// <summary>
/// 它将元素移动到当前的上一个同级之前。
/// </summary>
public bool ElementPositionUp(SVGUnit ele)
{
SVGErr err = new SVGErr("SvgDoc", "ElementPositionUp");
err.Log("Element to move " + ele.ElementInfo(), SVGErr._LogPriority.Info);
SVGUnit parent = ele.getParent();
if (parent == null)
{
err.Log("Root node cannot be moved", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
if (IsFirstChild(ele))
{
err.Log("Element is already at the first position", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
SVGUnit nxt = ele.getNext();
SVGUnit prv = ele.getPrevious();
SVGUnit prv2 = null;
ele.setNext(null);
ele.setPrevious(null);
if (nxt != null)
{
nxt.setPrevious(prv);
}
if (prv != null)
{
prv.setNext(nxt);
prv2 = prv.getPrevious();
prv.setPrevious(ele);
if (IsFirstChild(prv))
{
if (prv.getParent() != null)
{
prv.getParent().setChild(ele);
}
}
}
if (prv2 != null)
{
prv2.setNext(ele);
}
ele.setNext(prv);
ele.setPrevious(prv2);
err.Log("Element moved " + ele.ElementInfo(), SVGErr._LogPriority.Info);
err.LogEnd(true);
return(true);
}
/// <summary>
/// It moves the element after its current next sibling.
/// </summary>
public bool ElementPositionDown(SVGUnit ele)
{
SVGErr err = new SVGErr("SvgDoc", "ElementPositionDown");
err.Log("Element to move " + ele.ElementInfo(), SVGErr._LogPriority.Info);
SVGUnit parent = ele.getParent();
if (parent == null)
{
err.Log("Root node cannot be moved", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
if (IsLastSibling(ele))
{
err.Log("Element is already at the last sibling position", SVGErr._LogPriority.Info);
err.LogEnd(false);
return(false);
}
SVGUnit nxt = ele.getNext();
SVGUnit nxt2 = null;
SVGUnit prv = ele.getPrevious();
// fix Next
if (nxt != null)
{
nxt.setPrevious(ele.getPrevious());
nxt2 = nxt.getNext();
nxt.setNext(ele);
}
// fix Previous
if (prv != null)
{
prv.setNext(nxt);
}
// fix Element
if (IsFirstChild(ele))
{
parent.setChild(nxt);
}
ele.setPrevious(nxt);
ele.setNext(nxt2);
if (nxt2 != null)
{
nxt2.setPrevious(ele);
}
err.Log("Element moved " + ele.ElementInfo(), SVGErr._LogPriority.Info);
err.LogEnd(true);
return(true);
}
/// <summary>
/// 根据读取的xml生成项目
/// </summary>
/// <param name="svg"></param>
public static void CreateProjectFromXML(SVGUnit svg, DrawObjectList list)
{
while (svg != null)
{
switch (svg.getElementType())
{
case SVGUnit.SVGUnitType.def: //将所有symbol读取
SVGUnit defchild = svg.getChild();
while (defchild != null)
{
if (defchild.getElementType() == SVGUnit.SVGUnitType.symbol)
{
CreateSysmbolUnit(defchild as SVGSymbol);
}
defchild = defchild.getNext();
}
break;
case SVGUnit.SVGUnitType.typeGroup:
if (svg.Id == SVGDefine.ConnectLineClass)
{
SVGGroup group = svg.getChild() as SVGGroup;
DrawConnectObject drawConnectObject = DrawConnectObject.Create(group.getChild() as SVGPath);
SVGCN_Ref svgcnRef = group.getChild().getNext().getChild() as SVGCN_Ref;
var linkDnd = svgcnRef.LinkObjecttlDnd.Split('@');
drawConnectObject.SetConnectDeviceFromXml(linkDnd[0], 1, int.Parse(linkDnd[1]), list.GetDeviceList());
linkDnd = svgcnRef.LinkObjectIDznd.Split('@');
drawConnectObject.SetConnectDeviceFromXml(linkDnd[0], 2, int.Parse(linkDnd[1]), list.GetDeviceList());
drawConnectObject.Id = int.Parse(group.Id);
list.Add(drawConnectObject);
group = group.getNext() as SVGGroup;
}
else if (svg.Id == SVGDefine.AnimationClass)
{
}
else
{
SVGGroup group = svg.getChild() as SVGGroup;
while (group != null)
{
var gchild = group.getChild();
switch (gchild.getElementType())
{
case SVGUnit.SVGUnitType.use:
SVGUse use = gchild as SVGUse;
var gDevice = CreateDeviceDrawObjectBase(use, group.Id); //TODO 后期添加到工作组中
list.Add(gDevice);
break;
default:
//TODO 未编排为设备的图素集合，暂时用临时分组表示
var o = SVGDrawFactory.CreateDrawObject(svg);
list.Add(o);
//vBase = new DeviceDrawObjectBase(0f, 0f, 0f, 0f, group.Id, drawObjects, null, "");
break;
}
group = group.getNext() as SVGGroup; //获取下一个
}
}
break;
default: break;
}
svg = svg.getNext();
}
}