void DragControlHandle(BezierPoint controlHandle, Point pt)
{
if (TempLayout != null && SelectedObject.Link != null)
{
Rectangle rect = TempLayout.MaxRectangle;
Link line = SelectedObject.Link;
var oldPoints = line.GetBezierPoints();
pt = View.PointToLogic(pt);
switch (controlHandle)
{
case BezierPoint.StartPoint:
TempLayout.StartPoint = pt;
TempLayout.ControlPoint1 = BezierHelper.GetControlPoint(TempLayout.StartPoint, TempLayout.CP1);
break;
case BezierPoint.EndPoint:
TempLayout.EndPoint = pt;
TempLayout.ControlPoint2 = BezierHelper.GetControlPoint(TempLayout.EndPoint, TempLayout.CP2);
break;
case BezierPoint.ControlPoint1:
TempLayout.ControlPoint1 = pt;
Shape sShape = Shape.GetShaper(line.From);
TempLayout.StartPoint = sShape.GetBorderPoint(line.From.Bounds, TempLayout.ControlPoint1);
break;
case BezierPoint.ControlPoint2:
TempLayout.ControlPoint2 = pt;
Shape dShape = Shape.GetShaper(line.Target);
TempLayout.EndPoint = dShape.GetBorderPoint(line.Target.Bounds, TempLayout.ControlPoint2);
break;
default:
break;
}
//rect = Rectangle.Union(rect, TempLayout.MaxRectangle);
//InvalidateChart(rect, true);
InvalidateLink(oldPoints, line.Width, true);
InvalidateLink(TempLayout.GetPoints(), line.Width, true);
}
DragingControlHandle = controlHandle;
}
BezierLayoutInfo GetLayoutInfo(BezierControlPoint controlPoint1, BezierControlPoint controlPoint2)
{
var layout = new BezierLayoutInfo();
layout.CP1 = controlPoint1;
layout.CP2 = controlPoint2;
Point cp1, cp2;
Rectangle rect1 = From.Bounds;
Rectangle rect2 = Target.Bounds;
Point pts = PaintHelper.CenterPoint(rect1);
Point ptd = PaintHelper.CenterPoint(rect2);
rect1.Inflate(2, 2);
rect2.Inflate(2, 2);
if (StartCap != LineAnchor.None)
{
rect1.Inflate(Layouter.LineAnchorSize, Layouter.LineAnchorSize);
}
if (EndCap != LineAnchor.None)
{
rect2.Inflate(Layouter.LineAnchorSize, Layouter.LineAnchorSize);
}
if (pts == ptd)
{
cp1 = pts;
cp2 = ptd;
layout.Bounds = Rectangle.Empty;
layout.Region = null;
}
else
{
cp1 = BezierHelper.GetControlPoint(pts, controlPoint1);
cp2 = BezierHelper.GetControlPoint(ptd, controlPoint2);
//Point[] controlPoints = GetControlPoints(pts, ptd);
Shape sShape = Shape.GetShaper(From);
pts = sShape.GetBorderPoint(rect1, cp1);
Shape dShape = Shape.GetShaper(Target);
ptd = sShape.GetBorderPoint(rect2, cp2);
GraphicsPath gp = new GraphicsPath();
gp.AddBezier(pts, cp1, cp2, ptd);
Pen penWiden = new Pen(Color.Black, LineWidth + 5);
gp.Widen(penWiden);
var rect = gp.GetBounds();
rect.Inflate(LineWidth, LineWidth);
layout.Bounds = rect;
layout.Region = new Region(gp);
}
Point ptCenter = BezierHelper.GetPoint(pts, cp1, cp2, ptd, 0.5f);
Rectangle textBounds = layout.TextBounds;
textBounds.X = ptCenter.X - layout.TextBounds.Width / 2;
textBounds.Y = ptCenter.Y - layout.TextBounds.Height / 2;
// cache layout info
layout.StartBounds = rect1;
layout.EndBounds = rect2;
layout.StartPoint = pts;
layout.EndPoint = ptd;
layout.ControlPoint1 = cp1;
layout.ControlPoint2 = cp2;
layout.TextBounds = textBounds;
return(layout);
}
