//draws the main atom symbol, or an ellipse if necessary
private AtomTextMetrics DrawSelf(DrawingContext drawingContext, bool measureOnly = false)
{
if (AtomSymbol != "")
{
var symbolText = new GlyphText(AtomSymbol, SymbolTypeface, SymbolSize, PixelsPerDip());
symbolText.Fill = Fill;
symbolText.MeasureAtCenter(Position);
if (!measureOnly)
{
symbolText.DrawAtBottomLeft(symbolText.TextMetrics.BoundingBox.BottomLeft, drawingContext);
}
return(symbolText.TextMetrics);
}
else
{
//so draw a circle
double radiusX = SymbolSize / 3;
Rect boundingBox = new Rect(new Point(Position.X - radiusX, Position.Y - radiusX),
new Point(Position.X + radiusX, Position.Y + radiusX));
return(new AtomTextMetrics
{
BoundingBox = boundingBox,
Geocenter = Position,
TotalBoundingBox = boundingBox,
FlattenedPath = new List <Point>
{
boundingBox.BottomLeft, boundingBox.TopLeft, boundingBox.TopRight, boundingBox.BottomRight
}
});
}
}
/// <summary>
/// Draws the subscripted group text
/// </summary>
/// <param name="drawingContext">DC supplied by OnRender</param>
/// <param name="measure">Provided by calling the Measure method previously</param>
/// <param name="pixelsPerDip"></param>
/// <param name="fill"></param>
public void DrawSelf(DrawingContext drawingContext, AtomTextMetrics measure, float pixelsPerDip, Brush fill)
{
_mainText.Fill = fill;
_mainText.DrawAtBottomLeft(measure.BoundingBox.BottomLeft, drawingContext);
if (_subText != null)
{
_subText.Fill = fill;
_subText.DrawAtBottomLeft(_subText.TextMetrics.BoundingBox.BottomLeft, drawingContext);
}
}