internal DiagramItem(Diagram diagram)
{
_diagram = diagram;
_label = null;
_drawer = null;
_geometry = null;
_border = null;
NeedRecalc = true;
IsSelectable = true;
}
protected void DrawSelectionBorder(Diagram diagram, DrawingContext dc, DiagramSelectionBorder border)
{
if (border == null)
return;
for (var i = 0; i < border.ResizeInfos.Count; i++)
{
var curInfo = border.ResizeInfos[i];
var prevPointIndex = i != 0 ? i - 1 : border.ResizeInfos.Count - 1;
var prevInfo = border.ResizeInfos[prevPointIndex];
if (!curInfo.Point.HasValue || !prevInfo.Point.HasValue)
continue;
if (border.IsLinked)
dc.DrawLine(GlobalData.BorderPen, curInfo.Point.Value, prevInfo.Point.Value);//GeometryTranslater.OffsetPoint(, diagram.Offset, diagram.Scale), GeometryTranslater.OffsetPoint(prevInfo.Point.Value, diagram.Offset, diagram.Scale));
var resizeRect = curInfo.Rect;
if (!resizeRect.HasValue)
continue;
if (curInfo.ResizeDirection != ResizeDirection.None)
dc.DrawRectangle(GlobalData.BorderBrush, GlobalData.BorderPen, resizeRect.Value);//GeometryTranslater.OffsetRect(resizeRect.Value, diagram.Offset, diagram.Scale));
}
}
protected void CalculateGeometry(IDiagramItemDrawer drawer)
{
if (drawer == null)
return;
if (NeedRecalc == false)
return;
_geometry = drawer.CalculateGeometry(this);
_border = drawer.CalculateBorder(this);
NeedRecalc = false;
}