public override void Layout(ITagDB db, GUTag tag, Size size, TreeLayoutEnv env)
{
oriSize = size;
env.Reset();
tags = new List <TagBox>();
this.db = db;
root = GTagBoxTree.ExpandNode(tag, 0, db, 0, 0, 1, oriSize, env, myLayoutMode);
tags = env.GetAllTagBox();
lines = env.GetAllLines().Cast <UIElement>();
}
