public override Rect GetActualBoundsInParent(IViewObject element)
{
FrameworkElement element1 = element == null ? (FrameworkElement)null : element.PlatformSpecificObject as FrameworkElement;
if (element1 == null)
{
return(new Rect());
}
return(ElementUtilities.GetActualBoundsInParent(element1));
}
public override void Draw(DrawingContext drawingContext, Matrix matrix)
{
if (this.snapLines == null)
{
return;
}
FrameworkElement element = this.targetElement == null || !this.targetElement.IsViewObjectValid ? (FrameworkElement)null : this.targetElement.ViewObject.PlatformSpecificObject as FrameworkElement;
if (element != null)
{
this.targetBounds = ElementUtilities.GetActualBoundsInParent(element);
}
foreach (SnapLine snapLine in this.snapLines)
{
if (this.BoundsMatchSnapLine(this.targetBounds, snapLine))
{
Point p1 = snapLine.P1;
Point p2 = snapLine.P2;
if (snapLine.IsContainerLine || snapLine.Location != snapLine.LocationRelativeToTarget)
{
Point cornerPoint1;
Point cornerPoint2;
this.GetTargetCorners(this.targetBounds, snapLine.Orientation, snapLine.LocationRelativeToTarget, out cornerPoint1, out cornerPoint2);
Rect rect = new Rect(p1, p2);
rect.Union(cornerPoint1);
rect.Union(cornerPoint2);
if (Math.Abs(snapLine.OffsetRelativeToTarget) < 0.001)
{
p1 = rect.TopLeft * matrix;
Point point1 = rect.BottomRight * matrix;
drawingContext.DrawLine(SnapLineAdorner.SolidSnapLinePen, p1, point1);
drawingContext.DrawLine(SnapLineAdorner.DottedSnapLinePen, p1, point1);
}
else
{
StreamGeometry streamGeometry = new StreamGeometry();
StreamGeometryContext streamGeometryContext = streamGeometry.Open();
streamGeometryContext.BeginFigure(rect.TopLeft * matrix, true, true);
streamGeometryContext.PolyLineTo((IList <Point>) new Point[3]
{
rect.TopRight *matrix,
rect.BottomRight *matrix,
rect.BottomLeft *matrix
}, 0 != 0, 0 != 0);
streamGeometryContext.Close();
streamGeometry.Freeze();
drawingContext.DrawGeometry(SnapLineAdorner.MarginBrush, (Pen)null, (System.Windows.Media.Geometry)streamGeometry);
}
}
else
{
this.ExtendLine(this.targetBounds, snapLine.Orientation, ref p1, ref p2);
p1 *= matrix;
Point point1 = p2 * matrix;
Vector vector = (snapLine.Orientation == SnapLineOrientation.Horizontal ? new Vector(0.0, 1.0) : new Vector(1.0, 0.0)) * matrix;
if (vector.X != 0.0 || vector.Y != 0.0)
{
vector.Normalize();
double num = (snapLine.LocationRelativeToTarget == SnapLineLocation.Minimum ? -1.0 : 1.0) * SnapLineAdorner.SolidSnapLinePen.Thickness / 2.0;
p1 += num * vector;
point1 += num * vector;
}
drawingContext.DrawLine(SnapLineAdorner.SolidSnapLinePen, p1, point1);
drawingContext.DrawLine(SnapLineAdorner.DottedSnapLinePen, p1, point1);
}
}
}
}