// Update currentObj to reflect dragging to the given location.
void DragTo(PointF location)
{
currentObj = (DescriptionCourseObj) startingObj.Clone();
currentObj.MoveHandle(handleDragging, location);
}
// Create the course objects associated with this special. Assign the given layer to it.
static CourseObj CreateDescriptionSpecial(EventDB eventDB, SymbolDB symbolDB, CourseView.DescriptionView descriptionView, CourseLayer layer)
{
Special special = eventDB.GetSpecial(descriptionView.SpecialId);
Debug.Assert(special.kind == SpecialKind.Descriptions);
DescriptionKind descKind;
DescriptionLine[] description = GetCourseDescription(eventDB, symbolDB, descriptionView.CourseDesignator, out descKind);
CourseObj courseObj = new DescriptionCourseObj(descriptionView.SpecialId, special.locations[0], (float)Geometry.Distance(special.locations[0], special.locations[1]), symbolDB, description, descKind, special.numColumns);
courseObj.layer = layer;
return courseObj;
}
public override MapViewer.DragAction LeftButtonDown(Pane pane, PointF location, float pixelSize, ref bool displayUpdateNeeded)
{
if (pane != Pane.Map)
return MapViewer.DragAction.None;
// Begin dragging out the description block; start at 1 column
startLocation = location;
startingObj = new DescriptionCourseObj(Id<Special>.None, startLocation, 1F, symbolDB, description, kind, 1);
handleDragging = new PointF(startingObj.rect.Right, startingObj.rect.Top);
DragTo(location);
displayUpdateNeeded = true;
return MapViewer.DragAction.ImmediateDrag;
}