//private string GetNewTagTitle()
//{
// string tag = StaticCfg.Ins.DefaultNewTag;
// int i = 0;
// while(TagDB.QueryTagAlias(tag).Count>0)
// {
// tag = StaticCfg.Ins.DefaultNewTag + "-" + (++i);
// }
// return tag;
//}
private void EnsureVisible(GUTag newTag, GUTag currentRoot)
{
int MaxLevel = GTagBoxTree.CalcMaxLevel(MyLayoutMode);
GUTag tmp = newTag;
for (int i = 0; i < MaxLevel; i++)
{
List <GUTag> tmpP = TagDB.QueryTagParent(tmp);
if (tmpP.Count > 0)
{
tmp = tmpP[0];
}
else //无法回溯，直接返回
{
return;
}
if (tmp == currentRoot) //根节点已经可见，直接返回。
{
return;
}
}
ChangeRoot(tmp, newTag);
}
public override void Layout(ITagDB db, GUTag rootTag, Size size, TreeLayoutEnv env)
{
//初始化准备工作
GTagBoxTree subTree = null;
double y = 0;
oriSize = size;
this.db = db;
env.Reset();
tags = new List <TagBox>();
//计算出Root节点的位置信息
double rootTagBoxX = size.Width / 2;
root = new GTagBoxTree();
root.GTagBox = new GTagBox(0, rootTag, rootTagBoxX, 0, 1);
root.Move(-1 * root.GTagBox.InnerBox.Width * 3 / 4, 0);
env.Add(rootTag, root);
//计算左右子节点的开始位置（估算）
double l, r;
l = root.GTagBox.InnerBoxLeftTop.X - StaticCfg.Ins.LayoutXPadding * 5;
r = root.GTagBox.InnerBoxLeftTop.X + root.GTagBox.InnerBox.Width + StaticCfg.Ins.LayoutXPadding * 5;
Rect outterbox = Rect.Empty;
List <GUTag> allChild = db.QueryTagChildren(rootTag);
allChild.Remove(rootTag);
int idx = 0;
int mid = CalcMid(allChild, db);
GTagBoxTree[] children = new GTagBoxTree[allChild.Count];
int direct = 1;
//希望现实是按照顺时针方向现实
List <GUTag> Left = new List <GUTag>();
List <GUTag> Right = new List <GUTag>();
for (int i = 0; i < allChild.Count; i++)
{
if (i < mid)
{
Right.Add(allChild[i]);
}
else
{
Left.Add(allChild[i]);
}
}
List <GUTag> all = new List <GUTag>();
all.AddRange(Right);
Left.Reverse();
all.AddRange(Left);
foreach (GUTag c in all)
{
if (c == rootTag)
{
continue; //临时规避数据上的一个问题，有些节点自己成环了。
}
//确定当前子节点时放在左边，还是放在右边：半数放在左边，半数放在右边
if (idx == mid)
{
y = 0; //显示从左边转到右边，将y重置
direct = -1;
}
//展开第idx个子节点
subTree = GTagBoxTree.ExpandNode(c, 1, db, direct == 1?r:l, y, direct, size, env, myLayoutMode);
children[idx] = subTree;
//更新整个显示区的大小。(outterBox)
if (idx == 0)
{
outterbox = subTree.TotalRange;
}
else
{
outterbox.Union(subTree.TotalRange);
}
root.Children.Add(subTree);
env.AddLine(root, subTree, direct);
y += subTree.TotalRange.Height;
idx++;
}
outterbox.Union(root.GTagBox.OutterBox);
root.TotalRange = outterbox;
root.CenterRootY();
root.GTagBox.IsRoot = true;
LRBanlance(children, mid);
//如果有图形在坐标0的左边，将其往右移一些。
if (outterbox.X < 0)
{
root.Move(-outterbox.X, 0);
}
//ShowParent(root);
tags = env.GetAllTagBox();
lines = env.GetAllLines().Cast <UIElement>();
}
//public static Line CreateLine(GBoxObj parent, GBoxObj child)
//{
// Line l = new Line();
// l.X1 = parent.ColorBox.X + parent.ColorBox.Width / 2;
// l.Y1 = parent.ColorBox.Y + parent.ColorBox.Height;
// l.X2 = child.ColorBox.X + child.ColorBox.Width / 2;
// l.Y2 = child.ColorBox.Y;
// l.Tag = parent.Tag.ToString() + StaticCfg.Ins.ParentChildSplit + child.Tag.ToString();
// if (Math.Min(parent.GTagBox.Level, child.GTagBox.Level) == 0)
// {
// l.Stroke = new SolidColorBrush(GetColor(parent.GTagBox.Distance + 1, parent.GTagBox.Level + 1));
// l.StrokeThickness = StaticCfg.Ins.StrokeThickness * 1.5;
// l.StrokeDashArray = StaticCfg.Ins.StrokeDashArray;
// }
// else
// {
// l.Stroke = new SolidColorBrush(GetColor(parent.GTagBox.Distance + 1, parent.GTagBox.Level + 1));
// l.StrokeThickness = StaticCfg.Ins.StrokeThickness;
// l.StrokeDashArray = StaticCfg.Ins.StrokeDashArray;
// }
// return l;
//}
public static Path CreateBezier(Tuple <GTagBoxTree, GTagBoxTree, int> p_c, TreeLayoutEnv env)
{
GTagBoxTree p = p_c.Item1;
GTagBoxTree c = p_c.Item2;
int direct = (int)p_c.Item3;
System.Windows.Point p1 = new System.Windows.Point();
System.Windows.Point p5 = new System.Windows.Point();
System.Windows.Point p2 = new System.Windows.Point();
System.Windows.Point p4 = new System.Windows.Point();
System.Windows.Point p3 = new System.Windows.Point();
if (direct == 1)
{
p1.X = p.GTagBox.InnerBox.Right;
p5.X = c.GTagBox.InnerBox.Left;
}
else
{
p1.X = p.GTagBox.InnerBox.Left;
p5.X = c.GTagBox.InnerBox.Right;
}
p1.Y = (p.GTagBox.InnerBox.Top + p.GTagBox.InnerBox.Bottom) / 2;
p5.Y = (c.GTagBox.InnerBox.Top + c.GTagBox.InnerBox.Bottom) / 2;
p3.X = (p1.X + p5.X) / 2;
p3.Y = (p1.Y + p5.Y) / 2;
const int N = 3;
p2.X = (p1.X * N + p5.X) / (N + 1);
p4.X = (p1.X + p5.X * N) / (N + 1);
p2.Y = p1.Y;
p4.Y = p5.Y;
Path path = env.New(p_c);
if (path.Data == null)
{
PathGeometry pg = new PathGeometry();
PathFigureCollection pfc = new PathFigureCollection();
PathFigure pf = new PathFigure();
BezierSegment seg1 = new BezierSegment(p1, p2, p3, true);
seg1.IsSmoothJoin = true;
BezierSegment seg2 = new BezierSegment(p3, p4, p5, true);
seg2.IsSmoothJoin = true;
//Path->PathGeometry->PathFigureCollection->PathFigure->PathSegmentCollection->BezierSegment
path.Data = pg;
//PathGeometry
pg.Figures = pfc;
//PathFigureCollection
pfc.Add(pf);
//PF
pf.StartPoint = p1;
pf.Segments.Add(seg1);
pf.Segments.Add(seg2);
pg.Figures.Add(pf);
}
else
{
PathGeometry pg = path.Data as PathGeometry;
PathFigureCollection pfc = pg.Figures as PathFigureCollection;
PathFigure pf = pfc[0] as PathFigure;
pf.StartPoint = p1;
BezierSegment seg1 = pf.Segments[0] as BezierSegment;
BezierSegment seg2 = pf.Segments[1] as BezierSegment;
seg1.Point1 = p1; seg1.Point2 = p2; seg1.Point3 = p3;
seg2.Point1 = p3; seg2.Point2 = p4; seg2.Point3 = p5;
//pg.Figures.Add(pf);
}
SetBezierStyle(p.GTagBox, c.GTagBox, path);
return(path);
}