private void SetCalloutEndPoint()
{
// We're attaching the callout to the ROI, so make sure the two
// graphics are in the same coordinate system before we do that.
// This sets all the graphics coordinate systems to be the same.
this.CoordinateSystem = Subject.CoordinateSystem;
PointF endPoint;
CoordinateSystem coordinateSystem;
_calloutLocationStrategy.CalculateCalloutEndPoint(out endPoint, out coordinateSystem);
this.ResetCoordinateSystem();
_calloutGraphic.CoordinateSystem = coordinateSystem;
_calloutGraphic.AnchorPoint = endPoint;
_calloutGraphic.ResetCoordinateSystem();
}
private static void SerializeCallout(ICalloutGraphic calloutGraphic, GraphicAnnotationSequenceItem serializationState)
{
calloutGraphic.CoordinateSystem = CoordinateSystem.Source;
try
{
RectangleF textBoundingBox = RectangleUtilities.ConvertToPositiveRectangle(calloutGraphic.TextBoundingBox);
TextObject text = new TextObject();
text.BoundingBoxAnnotationUnits = GraphicAnnotationSequenceItem.BoundingBoxAnnotationUnits.Pixel;
text.BoundingBoxBottomRightHandCorner = new PointF(textBoundingBox.Right, textBoundingBox.Bottom);
text.BoundingBoxTextHorizontalJustification = GraphicAnnotationSequenceItem.BoundingBoxTextHorizontalJustification.Center;
text.BoundingBoxTopLeftHandCorner = textBoundingBox.Location;
text.UnformattedTextValue = calloutGraphic.Text;
serializationState.AppendTextObjectSequence(text);
// draw the callout line manually instead of anchoring the text,
// since we do not want the text to be moveable as permitted if we have an anchor point
SerializeDashedLine(calloutGraphic.TextLocation, calloutGraphic.AnchorPoint, calloutGraphic.SpatialTransform, serializationState, false);
}
finally
{
calloutGraphic.ResetCoordinateSystem();
}
}