protected override void OnRender(DrawingContext drawingContext)
{
SolidColorBrush renderBrush;
Pen renderPen;
if (this.isParentShapeSelected)
{
renderBrush = new SolidColorBrush(WorkflowDesignerColors.WorkflowViewElementSelectedBackgroundColor);
renderPen = new Pen(new SolidColorBrush(WorkflowDesignerColors.WorkflowViewElementSelectedBorderColor), 1.0);
}
else
{
renderBrush = new SolidColorBrush(WorkflowDesignerColors.WorkflowViewElementBackgroundColor);
renderPen = new Pen(new SolidColorBrush(WorkflowDesignerColors.WorkflowViewElementBorderColor), 1.0);
}
Point actualPoint;
Point origin = FreeFormPanel.GetLocation(AdornedElement);
Thickness margin = ((FrameworkElement)AdornedElement).Margin;
origin.X += margin.Left;
origin.Y += margin.Top;
foreach (ConnectionPoint connPoint in connectionPoints)
{
actualPoint = new Point(connPoint.Location.X - origin.X, connPoint.Location.Y - origin.Y);
DrawConnectionPoint(connPoint, actualPoint, renderBrush, renderPen, drawingContext);
}
base.OnRender(drawingContext);
}
protected override Size ArrangeOverride(Size finalSize)
{
double height = 0;
double width = 0;
for (int i = 0; i < Children.Count; i++)
{
Point pt = new Point(0, 0);
Size size = Children[i].DesiredSize;
if (Children[i].GetType() == typeof(Connector))
{
((UIElement)Children[i]).Arrange(new Rect(pt, size));
}
else
{
pt = FreeFormPanel.GetLocation(Children[i]);
((UIElement)Children[i]).Arrange(new Rect(pt, size));
}
if (width < (size.Width + pt.X))
{
width = size.Width + pt.X;
}
if (height < (size.Height + pt.Y))
{
height = size.Height + pt.Y;
}
}
width = (width < this.MinWidth) ? this.MinWidth : width;
width = (width < this.Width) ? (this.Width < Double.MaxValue ? this.Width : width) : width;
height = (height < this.MinHeight) ? this.MinHeight : height;
height = (height < this.Height) ? (this.Height < Double.MaxValue ? this.Height : height) : height;
return(new Size(width, height));
}
private void MeasureChildren(out double height, out double width)
{
height = 0;
width = 0;
Point pt = new Point(0, 0);
bool isOutmostPanel = this.IsOutmostPanel();
foreach (UIElement child in Children)
{
Connector connectorChild = child as Connector;
if (connectorChild != null && isOutmostPanel)
{
pt = new Point(0, 0);
if (measureConnectors)
{
Point srcPoint = FreeFormPanel.GetLocationRelativeToOutmostPanel(FreeFormPanel.GetSourceConnectionPoint(connectorChild));
Point destPoint = FreeFormPanel.GetLocationRelativeToOutmostPanel(FreeFormPanel.GetDestinationConnectionPoint(connectorChild));
if (connectorChild.Points.Count == 0 ||
(DesignerGeometryHelper.DistanceBetweenPoints(connectorChild.Points[0], srcPoint) > 1) ||
(DesignerGeometryHelper.DistanceBetweenPoints(connectorChild.Points[connectorChild.Points.Count - 1], destPoint) > 1))
{
connectorChild.Points = new PointCollection();
RoutePolyLine(connectorChild);
}
connectorChild.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
}
else
{
continue;
}
}
else //Measure non-connector elements.
{
child.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
if (!child.DesiredSize.Equals(((Size)FreeFormPanel.GetChildSize(child))))
{
FreeFormPanel.SetChildSize(child, child.DesiredSize);
}
pt = FreeFormPanel.GetLocation(child);
if (pt.X == 0 && pt.Y == 0)
{
pt = new Point(LeftStackingMargin, lastYPosition);
OnLocationChanged(child, new LocationChangedEventArgs(pt));
FreeFormPanel.SetLocation(child, pt);
lastYPosition += child.DesiredSize.Height + VerticalStackingDistance;
}
}
if (height < child.DesiredSize.Height + pt.Y)
{
height = child.DesiredSize.Height + pt.Y;
}
if (width < child.DesiredSize.Width + pt.X)
{
width = child.DesiredSize.Width + pt.X;
}
}
width = (width < this.MinWidth) ? this.MinWidth : width;
height = (height < this.MinHeight) ? this.MinHeight : height;
}