internal SignalViewModel(
ActorViewModel actorA, SequenceLineType lineType, SequenceArrowType arrowType,
ActorViewModel actorB, string message)
: base(message)
{
ActorA = actorA;
ActorB = actorB;
LineType = lineType;
ArrowType = arrowType;
}
private static Tuple <SequenceLineType, SequenceArrowType> GetSignalType(SignalTypeContext context)
{
LineTypeContext lineTypeContext = context.lineType();
SequenceLineType lineType = lineTypeContext?.DOTLINE() != null ? SequenceLineType.Dotted : SequenceLineType.Solid;
ArrowTypeContext arrowTypeContext = context.arrowType();
SequenceArrowType arrowType = arrowTypeContext?.OPENARROW() != null ? SequenceArrowType.Open : SequenceArrowType.Filled;
return(Tuple.Create(lineType, arrowType));
}
public void DrawLine(double x1, double y1, double x2, double y2, SequenceLineType lineType, SequenceArrowType arrowHead)
{
Pen pen = lineType == SequenceLineType.Solid ? m_solidLinePen : m_dashedLinePen;
double halfPenWidth = m_solidLinePen.Thickness / 2;
GuidelineSet guidelines = new GuidelineSet();
guidelines.GuidelinesX.Add(x1 + halfPenWidth);
guidelines.GuidelinesX.Add(x2 + halfPenWidth);
guidelines.GuidelinesY.Add(y1 + halfPenWidth);
guidelines.GuidelinesY.Add(y2 + halfPenWidth);
m_drawingContext.PushGuidelineSet(guidelines);
// Draw the main line segment
Point start = new Point(x1, y1);
Point end = new Point(x2, y2);
DrawLine(m_drawingContext, pen, start, end);
// Draw the arrowhead
double direction = (x1 > x2) ? 1 : -1;
Point arrow0 = new Point(end.X + direction * LineThickness, end.Y);
Point arrow1 = new Point(x2 + direction * s_arrowHeadSize.Width, y2 - s_arrowHeadSize.Height);
Point arrow2 = new Point(x2 + direction * s_arrowHeadSize.Width, y2 + s_arrowHeadSize.Height);
switch (arrowHead)
{
case SequenceArrowType.Filled:
{
var streamGeometry = new StreamGeometry();
using (StreamGeometryContext geometryContext = streamGeometry.Open())
{
geometryContext.BeginFigure(arrow0, true, true);
PointCollection points = new PointCollection {
arrow1, arrow2
};
geometryContext.PolyLineTo(points, true, true);
}
streamGeometry.Freeze();
m_drawingContext.DrawGeometry(m_arrowBrush, m_solidLinePen, streamGeometry);
break;
}
case SequenceArrowType.Open:
{
m_drawingContext.DrawLine(m_solidLinePen, arrow0, arrow1);
m_drawingContext.DrawLine(m_solidLinePen, arrow0, arrow2);
break;
}
}
m_drawingContext.Pop();
}
/// <summary>
/// Adds a signal.
/// </summary>
public void AddSignal(ActorViewModel actorA, SequenceLineType lineType, SequenceArrowType arrowType, ActorViewModel actorB, string message)
{
Annotations.Add(new SignalViewModel(actorA, lineType, arrowType, actorB, message));
}
