public static GTagBoxTree ExpandNode(GUTag tag, int level, ITagDB db, double x, double y, int direct, Size size, TreeLayoutEnv env, LayoutMode mode)
{
Logger.IN(tag.Title);
Logger.D("Expand " + tag + " " + x + " " + y);
//已经展开过，直接返回
if (env.Get(tag) != null)
{
Logger.D("FOUND " + tag);
Logger.OUT();
return(env.Get(tag));
}
//创建子树的根对象
GTagBoxTree root = new GTagBoxTree();
root.GTagBox = new GTagBox(level, tag, x, y, direct);
root.totalRange = root.GTagBox.OutterBox;
root.D("计算自身大小（不包括子节点）" + root.GTagBox.Tag);
env.Add(tag, root);//这个特别需要注意，在递归展开之前，先要将该节点加入DB，否则可能会出现无限递归
List <GUTag> children = db.QueryTagChildren(tag);
List <Size> childrenSize = new List <Size>();
GTagBoxTree pre = null;
GTagBoxTree cur = null;
double childX = x + direct * root.GTagBox.OutterBox.Width;
double childY = y;
int MaxLevel = CalcMaxLevel(mode);
//double h = 0;
//double w = 0;
if (level < MaxLevel)
{
//遍历展开所有子节点
foreach (GUTag ctag in children)
{
if (env.Get(ctag) != null)
{
continue;
}
cur = null;
//GTreeObj child = ExpandNode(ctag, level + 1, db, x + root.box.InnerBox.Width, y + h);
//h += child.OutBox.Height;
//w = Math.Max(w, child.OutBox.Width);
switch (mode)
{
case LayoutMode.TREE_COMPACT_MORE:
case LayoutMode.LRTREE_COMPACT_MORE:
cur = ExpandChildMoreCompact(level, MaxLevel, db, root, pre, ctag, direct, size, env, mode);
break;
case LayoutMode.TREE_COMPACT:
case LayoutMode.LRTREE_COMPACT:
cur = ExpandChildCompact(level, MaxLevel, db, root, pre, ctag, direct, size, env, mode);
break;
case LayoutMode.TREE_NO_COMPACT:
case LayoutMode.LRTREE_NO_COMPACT:
cur = ExpandChildNoCompact(level, MaxLevel, db, root, pre, ctag, direct, size, env, mode);
break;
default:
break;
}
//h += cur.OutBox.Height;
//w = Math.Max(w, cur.OutBox.Width);
root.totalRange.Union(cur.totalRange);
root.Children.Add(cur);
pre = cur;
}
}
//根据所有子节点所占区域的大小，计算自己的位置
//root.OutBox.Width = w + root.box.InnerBox.Width;
//root.OutBox.Height = Math.Max(h, root.box.InnerBox.Height);
//root.GTagBox.InnerBox.Y = (root.TotalRange.Top + root.TotalRange.Bottom) / 2;
root.GTagBox.CenterRootY(root.totalRange);
root.D(null);
Logger.OUT();
return(root);
}
