protected override void Serialize(ITextGraphic textGraphic, GraphicAnnotationSequenceItem serializationState)
{
// if the callout is not visible, don't serialize it!
if (!textGraphic.Visible)
{
return;
}
if (string.IsNullOrEmpty(textGraphic.Text))
{
return;
}
GraphicAnnotationSequenceItem.TextObjectSequenceItem text = new GraphicAnnotationSequenceItem.TextObjectSequenceItem();
textGraphic.CoordinateSystem = CoordinateSystem.Source;
try
{
RectangleF boundingBox = RectangleUtilities.ConvertToPositiveRectangle(textGraphic.BoundingBox);
text.BoundingBoxAnnotationUnits = GraphicAnnotationSequenceItem.BoundingBoxAnnotationUnits.Pixel;
text.BoundingBoxTextHorizontalJustification = GraphicAnnotationSequenceItem.BoundingBoxTextHorizontalJustification.Left;
text.BoundingBoxTopLeftHandCorner = boundingBox.Location;
text.BoundingBoxBottomRightHandCorner = boundingBox.Location + boundingBox.Size;
text.UnformattedTextValue = textGraphic.Text;
}
finally
{
textGraphic.ResetCoordinateSystem();
}
serializationState.AppendTextObjectSequence(text);
}
private static IGraphic CreateCalloutText(RectangleF annotationBounds, RectangleF displayedArea, GraphicAnnotationSequenceItem.TextObjectSequenceItem textItem)
{
if (textItem.AnchorPoint.HasValue)
{
CalloutGraphic callout = new CalloutGraphic(textItem.UnformattedTextValue);
PointF anchor = textItem.AnchorPoint.Value;
if (textItem.AnchorPointAnnotationUnits == GraphicAnnotationSequenceItem.AnchorPointAnnotationUnits.Display)
{
anchor = GetPointInSourceCoordinates(displayedArea, anchor);
}
callout.AnchorPoint = anchor;
callout.ShowArrowhead = annotationBounds.IsEmpty; // show arrowhead if graphic annotation bounds are empty
if (textItem.BoundingBoxTopLeftHandCorner.HasValue && textItem.BoundingBoxBottomRightHandCorner.HasValue)
{
PointF topLeft = textItem.BoundingBoxTopLeftHandCorner.Value;
PointF bottomRight = textItem.BoundingBoxBottomRightHandCorner.Value;
if (textItem.BoundingBoxAnnotationUnits == GraphicAnnotationSequenceItem.BoundingBoxAnnotationUnits.Display)
{
topLeft = GetPointInSourceCoordinates(displayedArea, topLeft);
bottomRight = GetPointInSourceCoordinates(displayedArea, bottomRight);
}
callout.TextLocation = Vector.Midpoint(topLeft, bottomRight);
}
else
{
if (!annotationBounds.IsEmpty)
{
callout.TextLocation = annotationBounds.Location - new SizeF(30, 30);
}
else
{
callout.TextLocation = anchor - new SizeF(30, 30);
}
}
return(callout);
}
else if (textItem.BoundingBoxTopLeftHandCorner.HasValue && textItem.BoundingBoxBottomRightHandCorner.HasValue)
{
InvariantTextPrimitive text = new InvariantTextPrimitive(textItem.UnformattedTextValue);
PointF topLeft = textItem.BoundingBoxTopLeftHandCorner.Value;
PointF bottomRight = textItem.BoundingBoxBottomRightHandCorner.Value;
if (textItem.BoundingBoxAnnotationUnits == GraphicAnnotationSequenceItem.BoundingBoxAnnotationUnits.Display)
{
topLeft = GetPointInSourceCoordinates(displayedArea, topLeft);
bottomRight = GetPointInSourceCoordinates(displayedArea, bottomRight);
}
// TODO: make the text variant - rotated as specified by bounding area - as well as justified as requested
// RectangleF boundingBox = RectangleF.FromLTRB(topLeft.X, topLeft.Y, bottomRight.X, bottomRight.Y);
// boundingBox = RectangleUtilities.ConvertToPositiveRectangle(boundingBox);
// boundingBox.Location = boundingBox.Location - new SizeF(1, 1);
text.Location = Vector.Midpoint(topLeft, bottomRight);
return(new MoveControlGraphic(text));
}
else
{
throw new InvalidDataException("The GraphicAnnotationSequenceItem must define either an anchor point or a bounding box.");
}
}
