public void DrawSelf(Brush b, Pen p)
{
NodeShapeType shape = NodeShape;
if (shape == NodeShapeType.圆角矩形)
{
ShapeHelper.FillRoundRectangle(nodeGraphics, b, SelfOutRect, 8);
ShapeHelper.DrawRoundRectangle(nodeGraphics, p, SelfOutRect, 8);
}
else if (shape == NodeShapeType.椭圆形)
{
nodeGraphics.FillEllipse(b, SelfOutRect);
nodeGraphics.DrawEllipse(p, SelfOutRect);
}
else if (shape == NodeShapeType.菱形)
{
ShapeHelper.FillDiamond(nodeGraphics, b, SelfOutRect);
ShapeHelper.DrawDiamond(nodeGraphics, p, SelfOutRect);
}
else if (shape == NodeShapeType.直角矩形)
{
nodeGraphics.FillRectangle(b, SelfOutRect);
nodeGraphics.DrawRectangle(p, SelfOutRect);
}
else if (shape == NodeShapeType.六边形)
{
ShapeHelper.FillHexagon(nodeGraphics, b, SelfOutRect);
ShapeHelper.DrawHexagon(nodeGraphics, p, SelfOutRect);
}
nodeGraphics.DrawString(NodeName, textFont, Brushes.Black, new Point(SelfOutRect.X + 4, SelfOutRect.Y + 4));
}
public void DrawNode()
{
Brush b = new SolidBrush(NodeColor);
Pen p = new Pen(Color.Black, 2);
DrawSelf(b, p);
//calc point
Point begin = new Point(SelfOutRect.Right, SelfOutRect.Top + SelfOutRect.Height / 2);
Point end = new Point();
foreach (var child in Children)
{
end.X = child.SelfOutRect.Left;
end.Y = child.SelfOutRect.Top + child.SelfOutRect.Height / 2;
ShapeHelper.DrawConnectLine(nodeGraphics, p, begin, end);
child.DrawNode();
}
}
public override void OnPaint(PaintEventArgs e)
{
Init();
//绘制原图
Root.SetGraphics(e.Graphics);
Root.CalcNodeHeight();
Root.CalcNodeWidth();
Root.SelfOutRect.X = ClientSize.Width / 2 - Root.NodeOutRect.Width / 2;
Root.SelfOutRect.Y = ClientSize.Height / 2;
Root.AutoLayout();
Root.DrawNode();
if (CurrentSelectNode != null)
{
CurrentSelectNode.DrawOutLine(outlinePen);
}
if (!IsMoving || CurrentMoveNode == null)
{
return;
}
//绘制移动的节点
CurrentMoveNode.SelfOutRect.X = MovingPos.X - CurrentMoveNode.SelfOutRect.Width / 2;
CurrentMoveNode.SelfOutRect.Y = MovingPos.Y - CurrentMoveNode.SelfOutRect.Height / 2;
CurrentMoveNode.DrawSelf(moveBrush, movePen);
if (MoveToParentNode == null)
{
return;
}
//绘制父节点连线
MoveToParentNode.DrawOutLine(outlinePen);
CurrentMoveNode.DrawOutLine(outlinePen);
ShapeHelper.DrawConnectLine(e.Graphics, outlinePen, MoveToParentNode.ConnectOutPos, CurrentMoveNode.ConnectInPos);
}
public static void DrawConnectLine(Graphics g, Pen p, Point begin, Point end)
{
//begin.x<end.x
Point ctrl1 = new Point(begin.X + 50, begin.Y);
Point ctrl2 = new Point(end.X - 50, end.Y);
if (begin.X > end.X)
{
ctrl1.X = begin.X - 50;
ctrl2.X = end.X + 50;
}
g.DrawBeziers(p, new[] { begin, ctrl1, ctrl2, end });
if (begin.X < end.X)
{
ShapeHelper.FillRightArrow(g, new SolidBrush(p.Color), end, 4);
}
else
{
ShapeHelper.FillLeftArrow(g, new SolidBrush(p.Color), end, 4);
}
//DrawBeziersPoint(g);
}
public override void OnPaint(PaintEventArgs e)
{
ShapeHelper.FillDiamond(e.Graphics, drawBrush, new Rectangle(200, 200, 200, 150));
ShapeHelper.DrawDiamond(e.Graphics, drawPen, new Rectangle(200, 200, 200, 150));
}
public override void OnPaint(PaintEventArgs e)
{
ShapeHelper.FillRoundRectangle(e.Graphics, drawBrush, new Rectangle(150, 150, 100, 50), 10);
ShapeHelper.DrawRoundRectangle(e.Graphics, drawPen, new Rectangle(150, 150, 100, 50), 10);
}
public override void OnPaint(PaintEventArgs e)
{
ShapeHelper.DrawConnectLine(e.Graphics, drawPen, ConnectBegin, ConnectEnd);
}
public void DrawOutLine(Pen p)
{
var rect = new Rectangle(SelfOutRect.X - 1, SelfOutRect.Y - 1, SelfOutRect.Width + 2, SelfOutRect.Height + 2);
ShapeHelper.DrawRoundRectangle(nodeGraphics, p, rect, 8);
}