public GTagBox(int distance, GUTag tag, double x, double y, int direct)
{
//记录展开方向（1：向右 -1：向左）
Direct = direct;
//计算大小
Inf = new TagBoxSizeInf(tag, distance, StaticCfg.Ins.GFontName);
//*****计算位置*****************
//计算OutterBox
OutterBoxLeftTop.X = x;
OutterBoxLeftTop.Y = y;
if (Direct == -1)
{
OutterBoxLeftTop.X -= Inf.OutterBoxSize.Width;
}
//计算InnerBox在：OutterBox的中间
InnerBoxLeftTop.X = OutterBoxLeftTop.X + (Inf.OutterBoxSize.Width - Inf.InnerBoxSize.Width) / 2;
InnerBoxLeftTop.Y = OutterBoxLeftTop.Y + (Inf.OutterBoxSize.Height - Inf.InnerBoxSize.Height) / 2;;
}
private static GTagBoxTree ExpandChildMoreCompact(int level, int MaxLevel, ITagDB db, GTagBoxTree root, GTagBoxTree pre, GUTag ctag, int direct, Size size, TreeLayoutEnv env, LayoutMode mode)
{
double estimateWidth = 0;
GTagBoxTree cur;
Logger.D("ChoosePos:pre:{0}-{1}-{2} cur:{0}-{1},",
pre?.GTagBox.Tag,
pre == null ? 0 : db.QueryTagChildren(pre.GTagBox.Tag).Count,
pre == null ? 0 : pre.totalRange.Right,
ctag, db.QueryTagChildren(ctag).Count);
//只有满足严格条件的情况下，才放在兄弟节点的后面，否则在父节点后展开
TagBoxSizeInf sizeinf = new TagBoxSizeInf(ctag, level + 1, StaticCfg.Ins.GFontName);
bool leftOK = true, rightOK = true;
int OneLineChild = GetTagTreeWidth(ctag, db, level + 1, MaxLevel, out estimateWidth);
//右边是否有足够空间(初步预估，用OneLineChild*本节点的宽度预估)
if (pre != null && direct == 1)
{
rightOK = pre.totalRange.Right + sizeinf.OutterBoxSize.Width < size.Width;
}
//左边是否有足够空间
if (pre != null && direct == -1)
{
leftOK = sizeinf.OutterBoxSize.Width < pre.totalRange.Left;
}
if (pre != null && (OneLineChild >= 0 &&
/*(db.QueryTagChildren(ctag).Count == 0 && db.QueryTagChildren(pre.box.Tag).Count == 0)*/
rightOK && leftOK
))
{
Logger.D("Place {0} after {1}:follow", ctag, pre.GTagBox.Tag);
//这种情况下不换行
cur = ExpandNode(ctag, level + 1, db,
direct == 1 ? pre.totalRange.Right : pre.totalRange.Left, //X
pre.totalRange.Top, //Y
direct, size, env, mode);
}
//第一个节点，没有兄弟节点，放在父节点后面 ==== > 放在父节点的同一行
//非叶子节点，也直接放在父节点后面 or ==== > 放在父节点的下一行
//前一个兄弟已经把这一行占完了 ==== > 放在父节点的下一行
else
{
if (pre == null)
{
Logger.D("Place {0} after {1}:follow", ctag, root.GTagBox.Tag);
//不换行，跟在根节点后面
cur = ExpandNode(ctag, level + 1, db,
direct == 1 ? root.GTagBox.OutterBox.Right : root.GTagBox.OutterBox.Left, //X
root.totalRange.Top, //Y
direct, size, env, mode);
}
else
{
Logger.D("Place {0} after {1}:newline", ctag, root.GTagBox.Tag);
//换行，也是跟在根节点后面
cur = ExpandNode(ctag, level + 1, db,
direct == 1 ? root.GTagBox.OutterBox.Right : root.GTagBox.OutterBox.Left, //X
root.totalRange.Bottom, //Y
direct, size, env, mode);
}
env.AddLine(root, cur, direct);
}
return(cur);
}
private static int GetTagTreeWidth(GUTag tag, ITagDB db, int level, int maxlevel, out double width)
{
TagBoxSizeInf sizeinf = new TagBoxSizeInf(tag, level, StaticCfg.Ins.GFontName);
width = sizeinf.OutterBoxSize.Width;
int ret = -1;
List <GUTag> children = db.QueryTagChildren(tag);
if (level > maxlevel)
{
ret = 1;
}
else if (level == maxlevel)
{
ret = children.Count + 1; //所有子节点+自己
}
//只有两种情况下不需要换行：
//1. 父节点 -- 子， 孙，重孙
//2. 父节点 -- 子，子，子，子
else if (children.Count <= 1) //情况1：
{
//只有一列子孙节点，所有都是独生子
ret = 1;
GUTag tmp = tag;
for (int i = level; i < maxlevel; i++)
{
children = db.QueryTagChildren(tmp);
if (children.Count > 1)
{
ret = -1;
break;
}
else if (children.Count == 0)
{
ret++;
break;
}
else if (children.Count == 1)
{
tmp = children[0];
sizeinf = new TagBoxSizeInf(tmp, level, StaticCfg.Ins.GFontName);
width += sizeinf.OutterBoxSize.Width;
ret++;
}
}
return(ret);
}
else
{
//情况2：只有一层子节点，所有子节点都是叶子(显示为子，子，子，子）
ret = children.Count;
foreach (GUTag ctag in children)
{
if (db.QueryChildrenCount(ctag) > 0) //有子节点非叶子，并且自己子节点数量>1,表示不能在一行内显示
{
ret = -1;
break;
}
sizeinf = new TagBoxSizeInf(ctag, level, StaticCfg.Ins.GFontName);
width += sizeinf.OutterBoxSize.Width;
}
}
Logger.D("GetTagTreeWidth : {0} {1}", tag.ToString(), ret);
return(ret);
}